Akshit Gupta
IIIT Delhi
Table of Contents
1. BEE Ratings Report
1.1
Overview
1.2
BEE Energy star label
1.3
Appliance-Frost Free Refrigerator
1.4
Appliance-Television
1.5
Appliance-Air Conditioner
1.6
Appliance- Washing Machine
2. Procedure of Data Collection
2.1
Overview
2.2
Plug Computer
2.3
Data Collection from JPlug
3. Sources of Data Collection
3.1
Collection from the residential homes-Appliance
3.2
Hostel-Appliance
3.3
Other sources of Data Collection
4. Analysis
4.1
4.2
4.3
4.4
4.5
4.6
Appliance Meta Data
Appliances’ Data Analysis
Mobile and Laptop Conditions
Power Saver and its impact
24 Hours Analysis
BEE Rating Analysis
5. References
6. Appendix
SECTION-1: BEE ENERGY RATINGS REPORT
1.1 Overview: [1]
BEE ratings were introduced to provide an alternative option to consider while choosing an appliance. Earlier
consumers had to keep in mind parameters like cost, configurations. However they were not aware about the
running costs of the appliance. With the introduction of the Energy Labelling Scheme, consumers were made aware
about the electricity consumption of their appliances. Energy Labelling Schemes have been promoted by the
Governments of many countries to propagate their agenda of energy conservation.
Different ratings are similar to each other in terms of evaluation process. However they differ in few things such as
standards and conditions. For e.g. the ratings for a country are designed keeping in mind the voltage and frequency
in that country. The V.F is 230 V, 50 Hz for India.
Other difference in the ratings is the range of appliances covered. For example appliances like Dishwashers, ovens
are yet to be covered by agencies in India while these appliances have been covered in the ratings by the EU
countries. Other difference is the scale of rating. For European Union Energy Label it is on the scale of A to G
instead of star scale of 5 followed in India.
1.2 .BEE Energy Star Label: [1] [2]
The labels contain a number of items. The highlight is the ‘STARS’. More the number of stars, more efficient is the
appliance. There are two kinds of labels – big label and smaller label. For ceiling fans, tube lights,
computers/laptops and televisions, the smaller labels are used while for refrigerators, air conditioners, geysers and
washing machine the big label is used.
BEE labels are mandatory for the appliances under the category-Mandatory Scheme and are not mandatory for the
appliances under the Voluntary Scheme. Given below is the list of the devices under these two schemes.
Mandatory Scheme
1. Frost Free (No-Frost) Refrigerator
3. Room Air Conditioners
2. Tubal Fluorescent Lamps
4. Distribution Transformer
Voluntary Scheme:
1. Room Air Conditioners (Cassette, Floor Standing Tower, Ceiling, Corner AC)
2. Direct Cool Refrigerator
3. Ceiling Fans
4. Liquefied Petroleum Gas Stoves
5. Ballast (Electronic/Magnetic)
6. Geysers
7. Color TV
8.
Washing Machine
9. Computer (Notebook /Laptops)
An additional aspect about the labelling program is that it is updated every year. The star rating plan is different for
products manufactured/imported or assembled in different years. For example. A refrigerator of gross volume 250
Liters manufactured in the year 2010 consuming 385 units is rated five stars. A refrigerator of the same volume
manufactured in the year 2012 consuming same units is rated four stars. This is so, because in 2010 the refrigerator
was among the ones consuming least energy. With technology innovation, there are refrigerators manufactured in
2012 consuming less than the best in 2010.
A green box in the label that shows the year for which the label is applicable. The same holds true for air
conditioners. However, for other appliances, similar update has not been done so far. It is not clearly mentioned
where these ratings have been derived from. However India’s BEE ratings are extremely similar to that of the
Australia’s energy star ratings.
1.3. Appliance - Frost Free Refrigerator: [3]
An example of a printed energy label for a refrigerating appliance is shown in Figure below. The label has the
following:
1. Appliance: Refrigerator
2. Energy Consumption per Year (CEC)
3. Model Name/Number, Year of Manufacturing
4. Brand
5. Type
6. Gross Volume
7. Storage Volume
1.3.1 Calculations for the Energy Label
Projected Annual Energy Consumption (PAEC): It is defined as the estimated energy used by a single unit during
one year’s use. The process of its calculation consists of measuring the tested energy consumption of each unit
tested, then calculating the projected annual energy consumption (PAEC) of the unit.
PAEC = Et * (365/1000) (kWh/Year)
Where Et = tested energy consumption expressed in Wh per 24 hours, rounded to the nearest whole number.
Comparative Energy Consumption (CEC): It is defined as the nominal energy consumption of a model of
refrigerating appliance. It is based on the PAEC (average) of the model. The CEC appears on the energy label.
(Units: kWh/Year)
Total Adjusted Storage Volume for No Frost (Vadj_tot_nf)
The rated storage volume of a compartment adjusted to compensate for heat loadings on spaces which are at
temperature other than that of fresh food type space. The adjusted volume would then be calculated on the basis
of the Storage Volume of each compartment.
1.3.2 Total Adjusted Volume for No Frost (Vadj_tot_nf)



Fresh Food Chamber Target Temperature = +3 Degree Celsius …..(I)
Freezer Chamber Target Temperature = -15 Degree Celsius …….(2)
Adjusted Volume Factor = (Test room Temp. – Freezer Temp.) / (Test room Temp. – Fresh Food Temp.)
Using (1) and (2), Adjusted Volume Factor hence is 1.62

Total Adjusted Volume for No Frost refrigerator (Vadj_tot_nf) = Fresh Food Storage Volume +
1.62 * Freezer Storage Volume
1.3.3 Comparative Energy Consumption
The CEC for a model would not be less than the average (rounded to a whole integer) PAEC value (i.e. PAECav) for
the three (or more) units which are tested to determine the label particulars. The CEC would be an integer in units
of kWh/Year. The CEC and Total Adjusted Storage Volume for No Frost (Vadj_tot_nf) would be used to determine the
Star Rating Band and Star Rating of the model.
The following equation would be used to determine the Star Rating Bands for a particular model.
Following table would be used to decide the star rating depending upon the range.
Star band is valid from 1.01.12 to 31.12.13
1.3.4 Energy Label Validity
The CEC value would be accepted as valid if, when a single sample of a labeled model is tested for an initial
screening test and its PAEC is such that:
PAEC < 1.1 * CEC
If this is not the case, the CEC would be accepted as valid if three additional units are tested and the average PAEC
of these additional units is such that the above condition is fulfilled. Additionally the PAEC should be less than the
upper limit of the corresponding Star Rating Band of the Star Rating of a single model tested or if two additional
units are tested then PAEC of two out of three and PAEC.av should be less than the upper limit of the corresponding
Star Rating Band.
1.3.5 Test required for standard and labelling:
These tests are would be as per IS 15750:2006.
1. Pull down test ( and operating temperature performance test as applicable )
2. Rated energy consumption
3. Rated volume
Given below is a sample label for the refrigerator.
1.4. Appliance - Television: [5]
1.4.1 Star Rating Plan
To calculate the BEE star rating TV is operated on two modes and the energy consumption is then counted. BEE
provides consumers with an estimate of each Star label qualified TV’s annual energy consumption through display
of a kWh/year number. This annual power consumption estimate would be based on a daily usage pattern of 6
hours in On Mode and 12 hours in Standby Mode.
1.4.2 Annual Power Consumption:
To qualify as BEE Star labeled product, all TVs, TV Combination Units, must not exceed the maximum Annual Power
Consumption (APCmax) found from the equations in Table 2 and 3 given below, based on the unit’s native vertical
resolution and visible screen area. The maximum annual power consumption is expressed in kilo-watts per year
and rounded to the nearest whole number. In the following equations, ‘A’ is the viewable screen area of the
product, found by multiplying the display width by the display height. Equations are provided in both standard unit
inches and centimeter.
Corresponding Equations for the star rating table above
1.4.3 Test Conditions (Applicable for India only)
a) Relative Humidity: 10-80%
b) Supply Voltage: 230 (± 1%) Volts AC, 50 Hz (± 1%)
c) Total Harmonic Distortion: < 2% THD (< 5% for products which are rated for > 1.5 kW maximum power)
d) Ambient Temperature: 23°C ± 5°C
Calculating Max Annual Power Consumption: It is defined as the maximum annual power consumption of the
qualified product can be calculated by the following equation. This can be expressed as Measured Max Annual
Power Consumption (MAPCmax).
MAPCmax = (6 x Pa + 12 x Ps) x 0.365 kWh/Year
Where
Pa: On Mode power consumption in Watts
Ps: Standby Mode power consumption in Watts
This annual power consumption estimate would be based on a daily usage pattern of 6 hours in On Mode and
12 hours in Standby Mode.
Comparative Energy Consumption (CEC): The CEC for a qualified product would not be less than the average
(rounded to a whole integer) MAPCmax value (i.e. MAPCmax (avg)) for the three (or more) units which are tested to
determine the label particulars. The CEC would be an integer in units of kWh/Year.
The CEC would be used to determine the Star Rating Band and Star Rating of the model. The CEC of the model as
determined above would be compared with the various Star Rating Bands i.e. APCmax. The Star Rating chosen for
the model would be based on the above comparison. CEC would be compared to the lower and the upper limits of
each Star Rating Band. The Star Rating corresponding to the band whose lower rating is less than CEC and upper
limit is greater than or equal to CEC would be assigned to the model.
Lower Limit of APCmax < CEC ≤ Upper Limit of APCmax
1.5. Appliance- Air Conditioner [7] [8]
The label would mention the following:
1. Appliance/Type
3. Capacity (kW) (Actual Tested)
5. EER (W/W)
7. Heat Pump (Yes/No)
2. Brand/Model Name/Number/Year of Manufacturing
4. Power (Watts)
6. Variable Output Compressor (Yes/No)
An Energy Efficiency Ratio (EER) is the ratio of the cooling capacity of an air conditioner in British Thermal Units
(BTU) per hour, to the total electrical input (in watts) under certain specified tests. Air conditioner EER ratings
higher than 10 are considered most cost effective. The higher the ratio, the less the unit would cost to operate.
Star Band Valid from 1 January 2012 to 31 December 2013
1.6. Appliance- Washing Machine[6]
Semi-Automatic Category
Fully-Automatic Category
The following benchmarks should be ensured by the manufacturer with relevant test reports .These would be
additional parameters verified other than energy consumption in the BEE check/challenge testing of the sample
drawn.
● % Soil removal of soiled strips for the machine after wash performance test should be ≥ 80%.
●
All washing machines should inform water consumption for the complete cycle on the label. Actual water
consumption should not be more than 110% of the stated water consumption by manufacturer.
●
Water retention in Water Extraction test would not exceed (<) 75%.
●
Rinsing Efficiency should be ≤ 2.25.
The following label is a standard label:
SECTION-2: PROCEDURE OF DATA COLLECTION
2.1 Power Saver
The main purpose of Power Saver is to reduce the electricity Bill and save
Electricity. Power Savers use a modern capacitance technology to dynamically
observe and improve the power consumption of household, office or the
industries. The power monitoring processor technology aims to optimize the
voltage and current demands thus reducing the active power / kWh.
The manufacturers of the power saver claims to achieve up to 50% of
efficiency depending upon country and regular smooth power supply. Power
Saver also acts as a voltage stabilizer by storing power for up to 10 seconds
and consequently supplies the load with constant voltage during brief power
surges. This in turn results in a longer lifetime of an electrical device which is
added money saving advantage. In the later sections of the report the following claims would be tested and
verified.
2.2 Plug Computer [9]
Plug computer is a small form factor computer server for use in the home or
office. The name is derived from the small form factor of such devices: plug
computers are often enclosed in an AC power plug or AC adapter. It is
suitable for running a media server, back-up services, file sharing and remote
access functions, such devices can be used as a bridge between in-home
protocols such as Digital Living Network Alliance (DLNA) and Server Message
Block (SMB) and cloud based services. In this project it was initially used to
run the python script “telnet_local.py” and collect the data from the JPlug.
2.3 Data collection from JPlug.
JPlug communicates over Wi-Fi to transfer the files. The laptop/plug-computer should also be preferably connected
to the same network.
2.3.1 Settings for the Wi-Fi Router:
First it is important to ensure that the wireless router is installed properly and supports 802.11b protocol. The
wireless router should be connected to the internet since the JPlug gets the time stamp from the internet.
(However in the later stages due to some issues regarding the Internet Connectivity, that feature was disabled).
In the next stage one should ensure that DHCP service in the router is enabled. JPlug expects the router to have a
specific SSID and Password. These can be set under Wireless Security settings of the router. Following are the
specifications that were set up:
SSID: WattzupAP
Password: Wattzup Secret PSK Password
Security: WPA-Personal can be chosen
2.3.2 JPlug connection to an appliance
The JPlug is connected to the main socket and the appliance is connected to the socket on the JPlug. After
switching the Power ON the JPlug, the appliances would now get powered through JPlug. The green LED on the
JPlug should glow. JPlug would obtain its IP address from the DHCP server running on the wireless router.
2.3.3 Running the Script on the Computer
After the connection is established, one needs to run the python script on the computer through the terminal in
the following format. Here test is the name of the file where output would be stored.
python telnet_local.py test &
Through MySQL server which is pre-installed on the computer, one can open the database of the JPlug and read
and manage the files as well as convert them into any desirable format. In this project, they were converted into
the csv files. Given below is the sample output row of the csv files.
Data: +50.1 +233.752 +128.762 +32.874 +0.004 +0.883 +161.229 +206.336 +0.624 +51.388
Following are the data field definitions of the each of the field column wise.
Data Field Definitions
#
Field Name
Tolerance
Sample data
1
Frequency in Hertz
0.1 Hz
+50.1
2
RMS Voltage in Volts
2%
+233.752
3
Active Power in Watts
5% (current and voltage samples
multiplied and averaged on per
second basis)
+128.762
4
Energy in Watt-Hour
5%
+32.874
5
Cost
N/A
+0.004
6
RMS Current in
Amperes
3%
+0.883
7
Reactive Power in
Watts
5% (Reactive power can be positive
or negative depending on power
factor—positive for positive power
factor—inductive loads)
+161.229
8
Apparent Power in
Volt-Amperes
5%
+206.336
9
Power Factor
Less than 5%
+0.624
10
Phase angle in degrees
Less than 5%
+51.388
SECTION-3: DATA COLLECTION SOURCE
(Meta Data of all the appliances has been mentioned in the SECTION-4.1)
3.1 Collection from the Residential Homes
Note that for Home-1 collection took for 3 different weeks in 3 different phases. That has been
mentioned in the SECTION-4.1.
Home-1
Location: Ashok Vihar, Delhi
Washing Machine-Fully Automatic-Samsung
2. Television-Minitron Series-Sony
3. 2 Laptops- Studio and Inspiron Dell Series
4. Refrigerator-Frost Free -Samsung
1.
Home-2
1.
2.
3.
4.
5.
6.
Washing Machine-Fully Automatic- Samsung
Electric Iron-Philips
Television-Minitron-Sony
Electric Motor-Crompton Greaves
Refrigerator-Frost free- Samsung
RO Water Purifier-Kent
Home-3
1.
2.
3.
4.
5.
Location: Ashok Vihar, Delhi
Location: Ashok Vihar, Delhi
Washing Machine-Fully Automatic- Samsung
Electric Iron-Philips
Television-CRT-Sony
Refrigerator-Frost free- Samsung
RO- Water Filter-Kent
Home-4
1.
2.
3.
4.
5.
Washing Machine- Samsung
Television-Sony
Electric Motor-Compton Greaves
Refrigerator- Samsung
Eureka Forbes Water Filter
Home-5
1.
2.
3.
4.
Location: Ashok Vihar, Delhi
Washing Machine- Samsung
Television Trinitron -Sony
Refrigerator- Samsung
RO-Eureka Forbes
Home-6
1.
2.
3.
Location: Ashok Vihar, Delhi
Location: Narela, Delhi
Washing Machine-Fully Automatic- Samsung
Television-LED TV-Samsung
Refrigerator-French Door Refrigerator- Samsung
Home-7
Location: Narela, Delhi
Washing Machine-Fully Automatic- Samsung
Refrigerator-Frost Free Refrigerator- Samsung
3. RO-Eureka Forbes
4. Television-34 inch ultra slim-Samsung
1.
2.
3.2 IIIT Delhi Hostel
RO Water Filter-Kent
2. TV-LED TV- Samsung
1.
3.3 Other Data Collection:
Mobile and Mobile Charger
2. Laptop and Laptop Charger
3. Refrigerator Overnight
1.
SECTION-4: ANALYSIS:
4.1 Appliances Meta Data
It contains mainly the following data about appliances:
 Company: The manufacturer of the appliance
 Model: Detailed information about the model including the model no. and type
 Time: The time period during which data collection was done
 Star Rating: The BEE Star Rating given to the appliance.
HOME-1-PHASE-1
1. Washing Machine
Company Name-Samsung
Model No – WA82VSLEC
Type: Semi-Automatic
Power: 330 W
Frequency: 50 Hz
2. Television
Company-Sony
Model No- KV-XA21M83
Rated Input- 110 W
Time: 7:50pm-8:29pm
3. Laptop
Company-Dell
Screen Size: 15.6-inch display
Time: 6:30-6:50pm
Star Rating- NA
HOME-1-PHASE-2
1. Washing Machine
Company Name-Samsung
Model No – WA82VSLEC
Type: Semi-Automatic
Power: 330 W
Frequency: 50 Hz
Date: 2nd Week September
Max Dry Mass(Capacity)- 6.2 kg
Time -Washing 1hr Spinning 15 minutes
Star Rating- 4 stars
Voltage: 220 V
Time: 7:00-7:29pm
Rating- 4 stars
Type: Tri-Nitron Color Television
Power Source AC: 110-240V 50HZ
Model- Inspiron 15R
Resolution of 1366 x 768,
Date: 3rd Week September
Max Dry Mass(Capacity)- 6.2 kg
Time -Washing 1hr Spinning 15 minutes
Star Rating- 4 stars
Voltage: 220 V
Time: 6:00 pm-8:23pm
2. Refrigerator
Company-Samsung
Model No- RT31M
Rated Input- 120 W
Power Source AC 220V 50HZ
Type: Single Door Frost free
Time: 10:00pm-12:06pm
Rating- 4 stars
Gross Capacity -315L ,11.1cubic feet
Ampere-1.0A
Refrigerant- 30g(5.6oz)
External Voltage Stabilizer: None
3. Laptop
Company-Dell
Screen Size: 15.6-inch display
Time: 9:00-9:20pm
Star Rating- NA
HOME-1-PHASE-3
Model- Studio 1558
Resolution of 1366 x 768,
Date: 4th Week September
1. RO
Company: Kent RO Systems
Model- Kent Eilte-2 MRO
Time: Without Power Saver-- 10:00-11:00 pm
With Power Saver: 11:00-11:15 pm
2. Television:
Company: Panasonic
Type: VIERA 42" Class D30 LED HDTV (42.0" Diag.)
Frequency: 60 Hz
Star Rating- 4 stars
Time: Without Power Saver-- 6:00-7:00 pm
With Power Saver: 7:00-7:51 pm
HOME-2
Machine No.-KR12062524
Star Rating- NA
Model No: TC-L42D30
Voltage: AC 110 - 127 V
Rated Input: 45W
Date: 1st Week October
1. Washing Machine:
Company: Samsung
Model: MWA82VSLEC/XTL 6.2 kg Fully Automatic
Power: 330 W
Voltage: 220 V
Frequency: 50 Hz
Star Rating- 4 stars
Rating Time: Washing-1hr spinning time-15 min
Time: (Without Power Saver):6:00-7:00pm
Time: (Power Saver):7:00-8:00pm
2. Electric Iron:
Company: Philips
Type: GC1115/02/B
Power: 1200 W
Volts: 220 V
Frequency: 50 Hz
Star Rating- NA
Time :( Without Power Saver):4:00-4:15pm
Time :( Power Saver):4:20-4:30pm
3. Television:
Company: Sony
Star Rating- 4 stars
Type: KV-XA21M83 Minitron Color Television
Time: (Without Power Saver):10-11pm
Time: (Power Saver):11pm-12am
4. Water Electric Motor
Company: Crompton
Volts: 220 (+-) 6%
Speed: 2780 RPM
Insulation: ‘B’ Class
Type: Minimaster
Size: 25*25 mm
Head: 6/48 M
Pump Number: JPM 03045
DIS: 4000/150 Lph
Capacitance: 22uF
Horsepower: 0.5 HP
Time :( Without Power Saver):7-8am
Time :( Power Saver):8-9am
5. Refrigerator
Company: Samsung
Type: Without transformer frost free
Model: Silver Nano
Rating: 4 stars
Time :( Without Power Saver):9-10am
Time: (Power Saver):10-11 am
6. RO Water Purifier
Company: Kent
Voltage: 160-300 AC
Model Type: Kent Elite-1 MRO
Operating Voltage: 24VDC
HOME-3-PHASE-1
Date: 2nd Week October
1. Washing Machine:
Company: Samsung
Model: MWA82VSLEC/XTL 6.2 kg Fully Automatic
Power: 330 W
Voltage: 220 V
Frequency: 50 Hz
Rating Time: Washing-1hr Spinning time-15 min
Time :( Without Power Saver):6:00-7:00pm
Time :( Power Saver):7:00-8:00pm
2. Electric Iron:
Company: Philips
Type: GC1115/02/B
Power: 1200 W
Volts: 220 V
Frequency: 50 Hz
Rating: NA
Time: (Without Power Saver):4:00-4:15pm
Time: (Power Saver):4:20-4:30pm
3. Television:
Company: Sony
Type: KV-XA21M83 Minitron Color Television
Star Rating- 4 stars
Time: (Without Power Saver):10-11pm
Time: (Power Saver):11pm-12am
4. Refrigerator
Company: Samsung
Type: Without transformer frost free
Model: Silver Nano
Star Rating- 4 stars
Time: (Without Power Saver):9-10am
Time: (Power Saver):10-11 am
5. RO
Company: Kent
Voltage-180-300 AC
Model Type: Kent Elite-1 MRO
Operating Voltage- 24V DC
HOME-3-PHASE-2
Date: 3th Week October
1. Washing Machine:
Company: Samsung
Model: MWA82VSLEC/XTL 6.2 kg Fully Automatic
Power: 330 W
Voltage: 220 V
Frequency: 50 Hz
Rating Time: Washing-1hr Spinning time-15 min
Star Rating- 4 stars
Time: (Without Power Saver):6:00-7:00pm
Time: (Power Saver):7:00-8:00pm
2. Refrigerator
Company: Samsung
Type: Without transformer frost free
Model: Silver Nano
Rating: 4 stars
Time: (Without Power Saver):9-10 pm
Time: (Power Saver):10-11 pm
HOME-1-PERSONAL ACCESSORIES
Date: 4th Week of October
LAPTOP:



Battery
o Device Type: Notebook Battery
o Technology:6 cell lithium ion battery
o Capacity: 56 Wh
Charger
o Model:DA90PE3-00
o Dell P/N:WTC0V
o Input: 100-240 V ~ 1.5A
o Output: 19.5V 4.62A
o Frequency:50-60 Hz
Duration:
o
o
o
Charging:6510 sec (10:00-11:48)pm
Fully Charged:2258 (11:48 pm -12:25)am
Discharging:7200 (12:25-2:25)am
MOBILE:

Battery: Battery Type: Lithium Ion

Charger:
Model: Samsung Travel Adapter
Input: 150-300 VAC
Current: 0.15 A

Battery Capacity: 800 mAh
Frequency: 50-60 Hz
Output: 5.0V -- 0.7 A
Duration:
Charging: 4164 (4:15-5:24) pm
Fully Charged: 3524 (5:24-6:23) pm
Discharging: 3948 (6:23-7:29)pm
HOME-4
1. Washing Machine:
Company: Samsung
Power: 330 W
Frequency: 50 Hz
Date: 2nd Week of November
Model: WT8505EG 6.5 kg Fully Automatic
Voltage: 220 V
Rating: 4 stars
Rating Time: Washing-42min spinning time-15 min
Time: (Without Power Saver):09:34:00 am-9:55:00 am
2. Television:
Company: Sony
Type: KD -34XS955 series Minitron Color Television
Rating: 4 stars
Time: (Without Power Saver):10:34-11:19pm
Time: (Power Saver):21:17:00-21:25:00
Link for more information: http://goo.gl/hRnCt
3. Water Electric Motor:
Company: Crompton
Volts:220 (+-) 6%
Speed: 2780 RPM
Insulation: ‘B’ Class
Type: Minimaster
Size:25*25 mm
Head: 6/48 M
Pump Number: JPM 03045
DIS: 4000/150 Lph
Capacitance: 22uF
Horsepower: 0.5 HP
Time: (Without Power Saver):8:57:00-8:59:00
4. Refrigerator
Company: Samsung
Type: Without transformer frost free
Model: Silver Nano RT2BSDTS
Rating: 4 stars
Link: For more information about the device: http://goo.gl/ffkGP
Time: (Without Power Saver):16:00-17:47
5. RO
Company: Eureka Forbes
Input Voltage- 230V AC/50Hz
Rating: 4 stars
HOME-5
Power Rating -25W
Time: 8:20-8:30am
Date: 2nd Week of November
1. Washing Machine:
Company: Samsung
Model: WT8501EG 6.5 kg Fully Automatic
Power: 330 W
Voltage: 220 V
Frequency: 50 Hz
Rating: 4 stars
Rating Time: Washing-None Spinning time-15 min
Time: (Without Power Saver):10:01- for (1063 seconds)
2. Television:
Company: Sony
Type: Model KW-34HD1 Trinitron Color Television
Rating: 4 stars
Time: (Without Power Saver):20:15:00 FOR (6444 seconds)
Link: For more information visit the link -http://goo.gl/1dMTj
3. Refrigerator
Company: Samsung
Type: Without transformer frost free
Model: Silver Nano RT2BSDSS
Rating: 4 stars
For more information: http://goo.gl/nBySh
Time: (Without Power Saver):11:40 for(5030 sec)
4. RO
Company: Eureka Forbes
Rating: NA
Time: (Without Power Saver) 8:34-8:38am
HOME-6
Date: 3rd Week of November
1. Washing Machine:
Company: Samsung
Model: WT85070AG 6.5 kg Fully Automatic
Power: 330 W
Voltage: 220 V
Frequency: 50 Hz
Rating: 4 stars
Rating Time: Washing-42min spinning time-15 min
Time: (Without Power Saver):10:10- for (4557 seconds)
2. Television:
Model NO- UA40D5000PRMXL
TV Type: Full HD, LED TV 40 inch in diameter
Power supply: AC 100 - 240 V, 50/60 Hz, Power Consumption: 100 W, 0.3 W
Time: (Without Power Saver):17:38:00 FOR (4475 seconds)
3. Refrigerator
Company: Samsung
Model: RF265AA
Type: (25.8 cu. ft.) Bottom Freezer French door Refrigerator
Time: (Without Power Saver):13:20 for (2970 sec)
HOME-7
Date: 3rd Week of November
1. Washing Machine:
Company: Samsung
Model: WT900iEG 7 kg Fully Automatic
Power: 330 W
Voltage: 220 V
Frequency: 50 Hz
Rating Time: Washing-None Spinning time-15 min
Time: 9:00am-10:09amonds
2. Television:
Company: Samsung
Type: CS14B500KJKXXL 34 inch ultra slim
Rating: 4 stars
Link for more information: http://goo.gl/YemJj
Time: Without Power Saver 9:30pm-9:52pmonds
Power Saver 22:15 with up-to 3597 seconds
3. Refrigerator
Company: Samsung
Type: Without transformer frost free
Model: Silver Nano RT2ASRSW
Rating: 4 stars
For more information: http://goo.gl/nBySh
Time:
Without Power Saver-13:00 for up-to 8419 seconds
With Power Saver- 9:09 for up-to 4643 seconds
4. Refrigerator (Over-night)
Company: Samsung
Type: Without transformer frost free
Model: Silver Nano
Time: 11:15pm-5:45am
Rating: 4 stars
5. RO
Company: Eureka Forbes
Time: 8:35 for 303 seconds
Rating: NA
4.2 Appliances’ Data Analysis:
4.2.1 Refrigerator
Home-3: Model: Samsung-Silver Nano
Home-1: Model: Samsung- RT2BSWE
Time: 11-12pm
Home-4: Model: Samsung- RT2BSDTS
Time: 16:00-17:47pm
Home-5: Model: Samsung- RT2BSDSS
Time: 11:40am-1:03pm
Home-6: Model: Samsung-Bottom French door Refrigerator
Time: 9-10pm
Home-7: Model: Samsung- RT2ASRSW
Overnight Data Collection: Model: Samsung-Silver Nano
Time: 1:20pm-2:10pm
Time: 11:15pm-5:45am
Time: 9-10pm
Above diagram depicts a process cycle of the refrigerator. Here basically the refrigerator has two
process- Evaporation and Condensation of the refrigerant. The condensation of the refrigerant
occurs by maintaining high pressure region whereas the evaporation of the refrigerant occurs by
maintaining low pressure region. In the evaporator heat is transferred from inside air to the
refrigerant whereas in the condenser heat is transferred from refrigerant to the outside air. The
process cycle is helpful in explaining the patterns observed in the subsequent graphs
4.2.1.1 Active Power
Overnight: Model: Samsung-Silver Nano
X-axis: Time in seconds
Time: 11:15pm-5:45am
Y-axis: Power in watts
Here for the overnight refrigerator note that the peaks are less intense and rectangular blocks
are for a smaller duration. This shows that refrigerator consumes comparatively less electricity
during the night time. This can be due to reason that during the night, temperature outside is
low. Hence the refrigerant takes comparatively less electricity.
Home-1: Model: Samsung- RT2BSWE
X-axis: Time in seconds
Time: 11-12pm
Y-axis: Power in watts
Although the refrigerator model is different, yet it shows the same pattern as above. A reason
for this can be due to the same conditions and hence same reasons are applicable for this case
as well.
Home-4: Model: Samsung- RT2BSDTS
Y-axis: Power in Watts
Time: 16:00-17:47pm
X-axis: Time in seconds
Home-5: Model: Samsung- RT2BSDSS Time: 11:40am - 1:03pm
X-axis: Time in seconds
Y-axis: Power in watts
Unlike the other refrigerator the capacity and size of this model is significantly small. Due to this
the energy consumption of this refrigerator has been significantly lesser than the other models.
Home-6:
Model: Samsung-Bottom Freezer French door Refrigerator
X-axis: Time in seconds
Home-7: Model: Samsung-RT2ASRSW
X-axis: Time in seconds
Time: 9-10pm
Y-axis: Power in watts
Time: 1:20pm-2:10pm
Y-axis: Power in watts
From the all graphs above it is easy to see that the shape of the graphs have been similar. They
have peak followed by rectangle for some time and then low energy consumption for a longer
period.
This is because it consumes energy to condense the refrigerant. Later during the cooling
refrigerant takes up the heat from the fridge and then evaporates.
Note that for the graphs except the Home-6 the graphs have been for the frost free
refrigerators.
For the Home-6 the graph have been for the French door refrigerator which is not frost. Frost
free refrigerators do consume more energy for a continuous period to keep the refrigerator
frost free whereas this is not the case for other appliance (non-frost free).
4.2.1.2 Reactive Power:
Overnight: Model: Samsung-Silver Nano
X-axis: Time in seconds
Time: 11:15pm-5:45am
Y-axis: Power in watts
Home-4: Model: Samsung- RT2BSDTS
X-axis : Time in seconds
Home-5:
Model: Samsung-Silver Nano
X-axis: Time in seconds
Time: 16:00-17:47pm
Y-axis: Power in watts
Time: 11:15pm-5:45am
Y-axis: Power in watts
Home-6:
Model: Samsung-Bottom Freezer French door Refrigerator
X-axis: Time in seconds
Home-7: Model: Samsung- RT2ASRSW
X-axis: Time in seconds
Time: 9-10pm
Y-axis: Power in watts
Time: 1:20pm-2:10pm
Y-axis: Power in Watts
Home-3: Model: Samsung-Silver Nano
X-axis: Time in seconds
Home-1: Model: Samsung- RT2BSWE
X-axis: Time in seconds
Time: 9-10pm
Y-axis: Power in Watts
Time: 11-12pm
Y-axis: Power in Watts
Note that in all the graphs pattern for the reactive power it is same as that of the active power.
However the consumption of the reactive power is pretty high for refrigerators and is positive.
Refrigerators require high amount reactive power to maintain the voltage.
Since reactive power is very high than the active power, hence one can say that power factor of
the refrigerator is pretty low.
4.2.1.3 Voltage:
Home-3:
Model: Samsung-Silver Nano
X-axis: Time in seconds
Time: 9-10pm
Y-axis: Voltage in volts
Overnight:
X-axis: Time in seconds
Model: Samsung-Silver Nano
Y-axis: Voltage in volts
Time: 11:15pm-5:45am
An interesting pattern for the overnight refrigerator is that voltage is increasing steadily to reach
a point around 250 after which it starts decreasing. This happens in spite of the fact that the
active power is low during the night time.
Home-1: Model: Samsung- RT2BSWE
X-axis: Time in seconds
Time: 11-12pm
Y-axis: Voltage in volts
Note that during the night time note that the voltage is increasing steadily.
Home-4: Model: Samsung- RT2BSDTS
X-axis: Time in seconds
Time: 16:00-17:47pm
Y-axis: Voltage in volts
Note here that in the evening time the voltage is decreasing.
Home-5:
Model: Samsung- RT2BSDSS
X-axis: Time in seconds
Time: 11:40am-1:03pm
Y-axis: Voltage in volts
Home-6:
Model: Samsung-Bottom Freezer French door Refrigerator
X-axis: Time in seconds
Home-7: Model: Samsung- RT2ASRSW
X-axis: Time in seconds
Time: 9-10pm
Y-axis: Voltage in volts
Time: 1:20pm-2:10pm
Y-axis: Voltage in volts
An important conclusion is that voltage keeps increasing steadily for the refrigerator as the
morning time continues. However as the evening progresses the voltage then starts to decrease
steadily. During the night for a steady period the voltage rises and then falls all throughout the
night.
4.2.2 Washing Machine
For all the washing machines from where data was collected were by the Samsung. Power
ratings were 330W, Voltage-220V and frequency- 50 Hz.
Washing
Spinning
Rinsing
The above diagram depicts the life cycle of a washing machine. One cycle of washing machine
starts with Rinsing->Spinning->Washing. This diagram is helpful in understanding the various
patterns in the subsequent graphs mentioned below.
However all of them were completely different models with major differences in the capacity
which roughly lied between 6.2-7kg. Yet these differences hardly had any effect on the graphs.
Washing Machines:
Home-3: Model: MWA82VSLEC/XTL 6.2 kg Fully Automatic
Home-2: Model: MWA82VSLEC/XTL 6.2 kg Fully Automatic
Home-7: Model: WT900iEG 7 kg Fully Automatic
Home-4: Model: WT8505EG 6.5 kg Fully Automatic
Home-5: Model: WT8501EG 6.5 kg Fully Automatic
Home-6: Model: WT85070AG 6.5 kg Fully Automatic
4.2.2.1 Active Power:
Home-3
X-axis: Time in seconds
Y-axis: Power in Watts
Time 6:00-7:00pm
Time 7:00-8:00pm
Time: 9:00am-10:09am
Time: 9:34 am-9:55 am
Time: 10:01am-10:18am
Time: 10:10am to 11:25am
Home-4: X-axis: Time in seconds
Home-6: X-axis: Time in seconds
Y-axis: Power in Watts
Y-axis: Power in Watts
Home-7: X-axis: Time in seconds
Home-3: X-axis: Time in seconds
Y-axis: Power in Watts
Y-axis: Power in Watts
In all the graphs above, as mentioned, the washing machines are taking up around 300W.
Typically one whole wash in a washing machine takes one hour. This includes washing, rinsing
and then spinning with each stage taking 10-15 minutes.
During these stages, the washing machines draws a lot of electricity and this is evident from all
the graphs above where during one hour 3 flat mountains were seen which depicted washing,
rinsing and spinning.
During intermediate stages of the washing machine was drawing/ releasing water and hence
very less electricity was consumed. Note that for the Home-K and Home-3a washing was
immediately followed by rinsing. This shows rinsing takes less power than the other stages i.e.
washing and spinning.
In these stages rinsing followed washing immediately because the water supply in these homes/
during those stages was very good. Shorter washing/rinsing /spinning periods depends upon
the clock time set up by the consumer.
4.2.2.2 Voltage:
Home-3: Model: MWA82VSLEC/XTL 6.2 kg Fully Automatic
X-axis: Time in seconds
Time 6:00-7:00pm
Y-axis: Voltage in Volts
Note that the voltage is constantly decreasing though there is an intermediate jump
Home-7:
Model: WT900iEG 7 kg Fully Automatic
Time: 9:00am-10:09am
X-axis: Time in seconds
Y-axis: Voltage in Volts
Home-4:
Model: WT8505EG 6.5 kg Fully Automatic
Time: 9:34am-9:55am
X-axis: Time in seconds
Y-axis: Voltage in Volt
During this period the voltage is fluctuating heavily. During the morning time there is heavy load
because of which the voltage keeps fluctuating.
Home-5:
Model: WT8501EG 6.5 kg Fully Automatic
Time: 10:01am-10:18am
X-axis: Time in seconds
Y-axis: Voltage in Volts
Just like the previous case here also the voltage is fluctuating heavily. As stated above earlier
this can be attributed to the morning time when the load is very high.
Home-6: Model: WT85070AG 6.5 kg Fully Automatic
Time: 10:10am to 11:25am
X-axis: Time in seconds
Y-axis: Voltage in Volts
Here the reason can same as that for the previous two cases
4.2.2.3 Reactive Power:
Home-3: Model: MWA82VSLEC/XTL 6.2 kg Fully Automatic
Time 6:00-7:00pm
X-axis: Time in seconds
Y-axis: Reactive Power in Watts
Here as one can see that the shape of the reactive power has been pretty much the same as
that of the active power. However the difference is there in terms of the peak. Reactive power
has been showing high values than active power thus making power factor very low.
Home-7: Model: WT900iEG 7 kg Fully Automatic
X-axis: Time in seconds
Time: 9:00am-10:09am
Y-axis: Reactive Power in Watts
Home-4: Model: WT8505EG 6.5 kg Fully Automatic Time: 9:34 am-9:55 am
X-axis: Time in seconds
Y-axis: Reactive Power in Watts
Home-5: Model: WT8501EG 6.5 kg Fully Automatic
X-axis: Time in seconds
Time: 10:01am-10:18am
Y-axis: Reactive Power in Watts
Here unlike the other graphs the reactive power decreased marginally and then remained
constantly fluctuating around 2.6 W.
Home-6:
Model: WT85070AG 6.5 kg Fully Automatic
X-axis: Time in seconds
Time: 10:10am to 11:25am
Y-axis: Reactive Power in Watts
The graph is very identical to its own active power graph. However unlike the other graphs the
mountains have been very steep. Overall in the graphs for the reactive power of the washing
machine the value of the reactive power has been higher than that of the active power. This
makes the power factor very low for the washing machine.
4.2.3 Television
Home-3 Model: Sony-KV-XA21M83 Minitron Color Television
Home-4: Model: Sony- KD -34XS955 Minitron Color Television
Home-5: Model: Sony- KW-34HD1 Trinitron Color Television
Time: 10:00-11:00am
Time: 10:34-11:19pm
Time: 8:15pm-9:02pm
Home-6: Model: Samsung-Full HD, LED TV 40 inch in diameter
Home-7: Model: Samsung-CS14B500KJKXXL 34 inch ultra slim
Time: 5:38pm-6:52pm
Time: 9:30pm-9:52pm
Note that for all the models connection for TV was separate from that of the satellite receiver
and hence satellite receiver was not included into the data collection.
4.2.3.1 Active Power:
Home-3 Model: Sony-KV-XA21M83 Minitron Color Television
Time: 10:00-11:00am
Note that the graph is fluctuating heavily for the CRT based televisions.
X-axis: Time in seconds
Y-axis: Power in Watts
Home-4
Model: Sony- KD -34XS955 Minitron Color Television
X-axis: Time in seconds
Y-axis: Power in Watts
Home-5
Model: Sony- KW-34HD1 Trinitron Color Television
X-axis: Time in seconds
Time: 10:34-11:19pm
Y-axis: Power in Watts
Time: 8:15pm-9:02pm
Home-6
Model: Samsung-Full HD, LED TV 40 inch in diameter
X-axis: Time in seconds
Time: 5:38pm-6:52pm
Y-axis: Power in Watts
Note the active power for the televisions has been very high in comparison to that of the CRT
tubes though they claim to be energy efficient.
A key feature associated with that is that. CRT based televisions are not energy efficient, but
they use less energy than newer models because they're so much smaller in size.
CRT televisions are not energy efficient because the active power fluctuates heavily.
Home-7
Model: Samsung-CS14B500KJKXXL 34 inch ultra slim
Time: 21:30 for 1352 sec
X-axis: Time in seconds
Y-axis: Power in Watts
Similarly for this case the fluctuation has not been very much showing the efficient energy use.
4.2.3.2 Voltage
Home-3 Model: Sony-KV-XA21M83 Minitron Color Television
X-axis: Time in seconds
Y-axis: Voltage in volts
Time: 10:00-11:00am
Home-4:
Model: Sony- KD -34XS955 Minitron Color Television
X-axis: Time in seconds
Time: 10:34-11:19pm
Y-axis: Voltage in volts
Home-5: Model: Sony- KW-34HD1 Trinitron Color Television
X-axis: Time in seconds
Y-axis: Voltage in volts
Time: 8:15pm-9:02pm
Home-6: Model: Samsung-Full HD, LED TV 40 inch in diameter Time: 5:38pm-6:52pm
X-axis: Time in seconds
Y-axis: Voltage in volts
Home-7: Model: Samsung-CS14B500KJKXXL 34 inch ultra slim
X-axis: Time in seconds
Y-axis: Voltage in volts
Time: 9:30pm-9:52pm
Note that voltage has almost remained steady on the same level though it decreased initially
and increased later.
An important conclusion is that for non CRT televisions the voltage has moreover remained the
same, though it also fluctuated. However for the CRT televisions, the voltage has steadily
increased as the night progressed and has steadily decreased during the day.
4.2.3.3 Reactive Power:
Home-3: Model: Sony-KV-XA21M83 Minitron Color Television
Time: 10:00-11:00am
X-axis: Time in seconds
Y-axis: Reactive Power in Watts
Home-4: Model: Sony- KD -34XS955 Minitron Color Television
X-axis: Time in seconds
Y-axis: Reactive Power in watts
Home-5
Model: Sony- KW-34HD1 Trinitron Color Television
X-axis: Time in seconds
Time: 10:34-11:19pm
Time: 8:15pm-9:02pm
Y-axis: Reactive Power in watts
Note that all the graphs above were for the CRT based television. Here the reactive power is
negative and almost same in magnitude as the active power is. This has made power factor very
high.
Home-6:
Model: Samsung-Full HD, LED TV 40 inch in diameter
X-axis: Time in seconds
Y-axis: Power in watts
Time: 5:38pm-6:52pm
Home-7
Model: Samsung-CS14B500KJKXXL 34 inch ultra slim
X-axis: Time in seconds
Time: 9:30pm-9:52pm
Y-axis: Power in watts
Note that here the reactive power has been largely negative though the value suddenly jumped
out to become less negative later on.
Hence one can conclude that the reactive power is less negative for the LED and modern
television.
This decreases the power factor and the system draws and wastes more current from the
system.
4.2.4 RO/ Water Filters
Home-3
Home-4.
Home-5
Home-7
RO Kent Eilte-2 MRO
Eureka Forbes
Eureka Forbes
RO Eureka Forbes Pure
Time: 10:00-11:00 pm
Time: 8:20-8:30am
Time: 10:34-10:38am
Time: 9:35-9:40am
4.2.4.1 Active Power:
Home-3: RO Kent Eilte-2 MRO
X-axis: Time in seconds
Time: 10:00-11:00 pm
Y-axis: Power in watts
Here note that the power consumption is very high mainly because the RO’s capacity was very
high-around 14 litres. Also it was using Reverse Osmosis technology and hence required a lot of
energy consumption.
Home-4: RO Eureka Forbes
Time: 8:20-8:30am
X-axis: Time in seconds
Y-axis: Power in watts
Home-5: Model: Eureka Forbes Water Filter
X-axis: Time in seconds
Y-axis: Power in Watts
Time: 10:34-10:38am
Home-7 Model: Eureka Forbes Pure
X-axis: Time in seconds
Time: 9:35-9:40am
Y-axis: Power in Watts
Note that the above three water filters are not RO based. Though they are of the same
company, yet they all are different models.
The capacity of this water filters is also not very high-around 1-3 litres.
These are simple candle based water filters and don’t use the reverse osmosis technology which
consumes a lot of electricity.
These are the reasons why the active power consumption is around 23-24 W only for the above
three cases.
4.2.4.2 Voltage:
Home-3: Model: RO Kent Eilte-2 MRO
X-axis: Time in seconds
Home-4:
Model: Eureka Forbes
X-axis: Time in seconds
Time: 10:00-11:00 pm
Y-axis: Voltage in volts
Time: 8:20-8:30am
Y-axis: Voltage in volts
Home-5
Model: Eureka Forbes
X-axis: Time in seconds
Home-7
RO Eureka Forbes-Pure
X-axis: Time in seconds
Time: 10:34-10:38am
Y-axis: Voltage in volts
Time: 9:35-9:40am
Y-axis: Voltage in volts
From the graphs above it is difficult to jump to any particular conclusion. However it is easy to
see that the range of the voltage has been fluctuating between 236W to 241 W.
4.2.4.3 Reactive Power:
Home-3:
Model: RO Kent Eilte-2 MRO
X-axis: Time in seconds
Time: 10:00-11:00 pm
Y-axis: Power in watts
Note that for this case the reactive power has been negative throughout.
This shows that the capacitive load has been dominant.
Negative reactive power has decreased the power factor and hence less current is being drawn
comparatively from the system.
Home-4.
Model: Eureka Forbes
X-axis: Time in seconds
Home-5
Model: Eureka Forbes
X-axis: Time in seconds
Time: 8:20-8:30am
Y-axis: Power in watts
Time: 10:34-10:38am
Y-axis: Power in watts
Home-7
Model: RO Eureka Forbes-Pure
X-axis: Time in seconds
Time: 9:35-9:40am
Y-axis: Power in watts
For the rest of the cases except the first one (for the Kent Elite-1), the reactive power has been
positive. This has decreased the power factor and hence much load has been put up on to the
system.
Thus Non RO systems are not energy efficient.
4.2.5 Electric Iron:
Home-2: Model: Electric Iron-GC1115/02/B
Home-3 Model: Electric Iron- GC1115/02/B
Time: 4:00-4:15pm
Time: 2:20-2:30pm
4.2.5.1 Active Power:
X-axis: Time in seconds
Y-axis: Power in watts
Here the electric iron is consuming 1400 W of power at regular intervals. Electric iron has a
tungsten coating on its bottom which requires high load of power to get heated up.
Therefore the iron provides short term electric shocks to the electric iron to keep it heated.
4.2.5.2 Voltage
X-axis: Time in seconds
Y-axis: Voltage in volts
Just like the active power a similar graph can be seen for the voltage.
When the power input becomes high, so does the voltage and it also changes dramatically.
4.2.5.3 Reactive Power:
X-axis: Time in seconds
Y-axis: Power in Watts
Note that the reactive power is continuously showing peaks. The peaks are either positive or
sometimes negative.
Negative peak shows immediate increase on the capacitive load whereas the positive peak
shows the load on the inductive load.
For heavy power consuming appliances like motor, electric iron inductive load is dominant.
Hence the power factor is very low for them.
4.2.6 Electric motor:
Home 2: Model: Water Electric Motor-JPM 03045
Home 4: Model: Water Electric Motor-JPM 03045
Time: 7:00-8:00am
Time: 8:57-8:59am
4.2.6.1 Active Power:
Home 2: Model: Water Electric Motor-JPM 03045
X-axis: Power in Watts
Time: 7:00-8:00am
Y-axis: Time in seconds
Home 4: Model: Water Electric Motor-JPM 03045
X-axis: Power in Watts
Time: 8:57-8:59am
Y-axis: Time in seconds
4.2.6.2 Voltage:
Home 2: Model: Water Electric Motor-JPM 03045
X-axis: Time in seconds
Time: 7:00-8:00am
Y-axis: Voltage in volts
Home 4:
Model: Water Electric Motor-JPM 03045
X-axis: Time in seconds
Time: 8:57-8:59am
Y-axis: Voltage in volts
4.2.6.3 Reactive Power:
Home 2: Model: Water Electric Motor-JPM 03045
X-axis: Time in seconds
Time: 7:00-8:00am
Y-axis: Power in watts
Home 4: Model: Water Electric Motor-JPM 03045
X-axis: Time in seconds
Time: 8:57-8:59am
Y-axis: Power in watts
4.3 Mobile and Laptop Conditions:
Note that all the experiments for this section were done in the hostel (college) environment.
4.3.1 Laptop:
ACTIVE POWER: Here while the laptop is charging there has been a constant supply of active
For the graph on right: X-axis: Percent battery status
For the graph on left: X-axis: Time in seconds
Y-axis: Power in Watts
Y-axis: Power in Watts
In the figure on right encircled portion shows very low active power for initial battery status
(0-10)% and for later stages highlighted portion signifies how active power is constantly
decreasing as the percent battery charged is increasing (after 80-100)%.
Power fluctuating in the range of 60-80 W. However after reaching 80% of battery charging, the
active power starts decreasing. Here note that the time to charge from 80-100% has also
increased significantly.
Also another interesting fact is that for initial charging of from 0-10 % there has been almost
negligible charging.
Here in the figure below while the laptop is 100 % charged, yet after decreasing initially the
active power came down and remained in the range of 33-35W throughout. This can be
because of the electrical supply is now being passed to the laptop and active power is not being
used to charge the battery as it was happening earlier.
For both the graphs above
X-axis: Time in seconds
Y-axis: Power in Watts
In the figure above the charger is not in contact with the laptop and the battery. Yet instead of
taking the no active power, it is consuming some active power in the range of around .1-.45 W.
CURRENT: Here for charging and fully charged, the graph showed almost the same pattern as
active showed. However for charging when battery was 10-80 % charged, the range of current
was in .3 to .35 A after which it started to drop.
Similarly for when the battery was 100 percent charged, the pattern was same as that of the
active power. Here current after initially decreasing remained constant in the range of .17-.18 A
throughout.
For the above graph X-axis: Time in seconds
Y-axis: Current in Amperes
Above figure is while the battery is discharging and the laptop is not attached with the charger.
However here current is not null and is consuming constantly either .024A or .025A.
REACTIVE POWER:
For the graph on right: X-axis: Percent battery status
For the graph on left: X-axis: Time in seconds
Y-axis: Power in Watts
Y-axis: Power in Watts
The above figure is for the reactive power while charging. Here since the reactive power is
negative throughout one can conclude that the capacitive load is dominant. During the charging
10-80% reactive power is fluctuating between -33-(-37) W. After 80% of the battery is charged, it
starts to increase.
For both the graphs above:
X-axis: Time in seconds
Y-axis: Power in Watts
The above case is when the battery is fully charged. Initially the reactive power is increasing and
after sometime it becomes constant and remains in the range of -21-(-23) W range throughout.
Here except for the few peaks the reactive power has been nearly constant around -5.7 W.
Below graph is for the case when the phone is discharging and the charger is not in the contact with the
phone
Here
X-axis: Time in seconds
Y-axis: Reactive Power in Watts
VOLTAGE:
For the graphs X-axis: Time in seconds
Y-axis: Voltage in volts
However for the case of discharging, the voltage saw a sudden drop. This might be attributed to
a sudden increase on the load.
However for the case of fully charged it has been changing around 237W.
As one can see above the voltage for charging has been nearly changing only a little around
240W.
4.3.2 MOBILE
ACTIVE POWER:
As one can see above in the figure, the active power has been heavily fluctuating in the range
For the graph on right: X-axis: Percent battery status
For the graph on left: X-axis: Time in seconds
Y-axis: Power in Watts
Y-axis: Power in Watts
4.3-4.55W. Here the fluctuation is independent of the status of the charging unlike the case of
the laptop.
The figure below is the case when the mobile is fully charged except for the fact that it is still
connected with the charger. Here as one can see the active power has remained negligible
except for some time when a sudden jump/change in the active power has been seen. This can
be attributed by the reason that for during that period, services that require heavy battery
usage like 3G, Gaming etc. might have been used.
X-axis: Time in seconds
Y-axis: Power in Watts
For the case of discharging active power has been completely zero throughout. Note that
discharging is a case when charger is connected with the socket but is not in contact with the
mobile.
CURRENT:
As one see above for the charging, the current has taken handful of the values between .037A-.04A.
However like active power it is also constantly changing.
The above case is for the fully charged. Here most of times the current has been in the range of .010.011A except for the interval between 1200-2000 and 2700-3600 seconds. A reason for this can be that
during this perios when heavy current was consumed, heavy battery consuming appilcations might ben
running.
Below figure is for discharging. Here note that unlike the active power, the current has not been zero.
REACTIVE POWER:
For the above graph on right: X-axis: Time in seconds
For the graph on the left: X-axis: Time in seconds
Y-axis: Battery Status in percent
Y-axis: Power in Watts
Here note that reactive power has been negative and has been constantly fluctuating.
During the case of the fully charged, initially reactive power was nearly constant and positive.
However later it started fluctuating heavily 6W and -6W.
For both the graphs: X-axis: Time in seconds
Y-axis: Reactive Power in Watts
In the case of the discharging, reactive power has been positive and fluctuate quickly though
the range of value is very small.
VOLTAGE:
In all the three graphs (charging, discharging and fully charged) the voltage has been changing
frequently. In both the graphs below-for discharging and fully charged.
X-axis: Time in seconds
Y-axis: Voltage in volts
The above case is when the phone is charging
Note that the graph on left: X-axis: time in seconds
Note that the graph on right: X-axis: Percent Battery status
Y-axis: Voltage in volts
Y-axis: Voltage in volts
4.4 Power Saver and its Impact
The main aim of the power saver is to reduce the active power. The appliances available in the
market claims to reduce the active power consumption by 5-10 percent. Through this
experiment we would verify the claim
Here in this section we have taken each appliance and analyzed if the power saver had any
positive, negative or negligible impact.
4.4.1 Washing Machine
Company: Samsung
Model: MWA82VSLEC/XTL 6.2 kg Fully Automatic
Time: (Without Power Saver):6:00-7:00pm
Time: (Power Saver):7:00-8:00pm
On the right is the appliance with Power Saver –
X-axis: Time in seconds
Y-axis: Power in Watts
On the left is the appliance without Power SaverX-axis: Time in seconds
Y-axis: Power in Watts
For the power saver in the graphs, the mountains became less flat. However the peaks were
much steeper in graph where power saver device was used.
4.4.2 Electric Iron:
Company: Philips
Type: GC1115/02/B
Time: (Without Power Saver):4:00-4:15pm
Time: (Power Saver):4:20-4:30pm
On the right is the appliance with Power Saver –
X-axis: Time in seconds
Y-axis: Power in Watts
On the left is the appliance without Power SaverX-axis: Time in seconds
Y-axis: Power in Watts
Both the graphs are more or less the same. Hence one can say that the impact of the power
saver was negligible.
4.4.3 Television
Company: Sony
Type:KV-XA21M83 Minitron Color Television
Time: (Without Power Saver):10-11pm
Time: (Power Saver):11pm-12am
On the right is the appliance with Power Saver:
X-axis: Time in seconds
Y-axis: Power in Watts
On the left is the appliance without Power Saver:
X-axis: Time in seconds
Y-axis: Power in Watts
Though the fluctuation is occurring in both the graphs, the graph with power saver is more or
less in the higher side than on the lower side. Hence the impact of power saver can be
considered more or less negative in this case.
4.4.4 Electric Motor
Company: Crompton Greaves
Pump Number: JPM 03045
Time: (Without Power Saver):7-8am
Time: (Power Saver):8-9am
On the right is the appliance with Power SaverX-axis: Time in seconds
Y-axis: Power in Watts
On the left is the appliance without Power SaverX-axis: Time in seconds
Y-axis: Power in Watts
In the graph on the left side there was a sudden fall in the graph, though it recovered later. This
can be attributed to the sudden drop in the voltage. This phenomenon is voltage drop. This
happens due to sudden increase in the intake of the current. However the graph recovered
later though the active power continued to fall.
In the graph on the right side has the use of power saver in it. Here one key thing is that the
active power is continuing to rise and thus active power might have no or negative impact on
the active power.
4.4.5 Refrigerator
Company: Samsung
Model: Silver Nano
Time: (Without Power Saver):9-10am
Time: (Power Saver):10-11 am
On the right is the appliance with Power Saver –
X-axis: Time in seconds Y-axis: Power in Watts
On the left is the appliance without Power SaverX-axis: Time in seconds Y-axis: Power in Watts
Here power saver did not have significant impact on the active power. However the active
power’s mountain got more flatter.
4.4.6 RO/Filter
Company: Kent
Voltage-180-300 AC
Model Type: Kent Elite-1 MRO
Operating Voltage- 24V DC
On the right is the appliance with Power SaverX-axis: Time in seconds Y-axis: Power in Watts
On the left is the appliance without Power SaverX-axis: Time in seconds Y-axis: Power in Watts
Here the impact of the power saver is almost negligible.
Conclusions for the power saver: Power saver has no impact on the active power. Though
the active power claims to reduce the active power consumption by 5-10 percent yet this has
not been seen anywhere in the graphs above.
4.5 24 Hours Analysis:
4.5.1 Hostel-Institutional Environment
4.5.1.1 Voltage:
X-axis: Time in seconds
Y-axis: Voltage in volts
The starting time for the collection was 5:18 pm. Note that there was has been little
fluctuation in the voltage during the night time. As the day progresses the fluctuation starts
more and more though in a definitive range of 235-240 W. During the night there has been very
little fluctuation. This can be attributed to heavy load during the day time and comparatively
less heavy load during the night time. A reason why voltage is stable in institutional
environment is due to the use of the voltage regulator which automatically maintains a
constant voltage level.
4.5.1.2 Frequency:
X-axis: Time in seconds
Y-axis: Frequency in Hertz
Note that the starting time for the analysis was 5:18 pm. Frequency has been
more or less stable and has been maintained in between the range of 49.9 and
50.1 Hz. This might be attributed to the use of thee frequency stabilizers in the
institutional environment.
4.5.2. Home Environment
4.5.2.1 Voltage:
X-axis: Time in seconds
Y-axis: Voltage in volts
Note that the starting time for the analysis was 7am. Here not that the voltage
has been fluctuating heavily. The voltage is not following any definitive pattern
here. The range of voltage has been in 225-250 W.
4.5.2.2 Frequency:
X-axis: Time in seconds
Y-axis: Frequency in Hertz
Note that the starting time has been 7 am. The frequency just like the voltage has
been unstable. The range of the frequency has been between 49.2 and 50.6 Hz.
4.6 BEE Ratings Analysis:
In this section, ratings of the various appliances would be calculated and verified with the rating
claimed by the appliance’s manufacturer.
4.6.1 Refrigerator
Range of the CEC:
Range for the 3 star: 489.5-612.15
Range for the 4 star: 391.0-489.50
Sno. Model
CEC
Expected
(KWh/yr.) Rating
Actual Rating
1.
Samsung- RT2BSDTS
534.36
4 star
3 star
2.
Samsung- RT2BSDSS
413
4 star
4 star
3.
Samsung-Bottom Freezer French door
Refrigerator
460.13
4 star
4 star
4.
Samsung- RT2ASRSW
448.5
4 star
4 star
5.
Samsung-Silver Nano
619
4 star
3 star
6
Samsung- RT2BSWE
797
3 star
3 star
4.6.2 Television
Maximum Annual Power Consumption:


CRT Television (3 star) :392
CRT Television (4 star) :349


Plasma 40 inch (3 star):598
Plasma 40 inch (4 star): 533


34 inch plasma/LED Television (3 star): 465
34 inch plasma/LED Television (4 star): 414
Sno. Model
APC
Expected
(KWh/yr.) Rating
Actual Rating
1.
Samsung-KV-XA21M83 Minitron Color
Television
382
3 star
3 star
2.
Samsung-KD -34XS955 Minitron Color
Television
389
3 star
3 star
3.
Samsung-KW-34HD1 Trinitron Color
Television
380
4 star
3 star
4.
Samsung-Full HD, LED TV 40 inch in
552
4 star
3 star
5.
Samsung-CS14B500KJKXXL 34 inch ultra slim
401
4 star
4 star
4.6.3 Washing Machine
Range of the Energy Consumption for Semi-Automatic (kwh/kg):
Range for the 4 star: .0117 - .0130
Range for the 3 star: .0130 - .0143
Range of the Energy Consumption for Fully-Automatic (kwh/kg):
Range for the 3 star: .0140 - .0154
Range for the 4 star: .0126 - .0140
Sno. Model
Energy
Expected
Consumption Rating
(KWh/yr.)
Actual Rating
1.
Samsung-MWA82VSLEC/XTL 6.2 kg
Fully Automatic
.013903
4 star
4 star
2.
Samsung-MWA82VSLEC/XTL 6.2 kg
Fully Automatic
.0127
4 star
4 star
3.
Samsung-WT900iEG 7 kg SemiAutomatic
.0142
4 star
3 star
4.
Samsung-WT8505EG 6.5 kg SemiAutomatic
.01276
4 star
4 star
5.
Samsung-WT8501EG 6.5 kg SemiAutomatic
.0124
4 star
4 star
6
Samsung- WT85070AG 6.5 kg SemiAutomatic
.0121
4 star
4 star
SECTION-5: REFERENCES
[1]http://www.bijlibachao.in/General-Tips/bee-star-rating-program-explained.html
[2] https://docs.google.com/a/iiitd.ac.in/file/d/0B417fppWhh0taElqbWE4dEdIZDg/edit
[3]http://220.156.189.26:8080/beeLabel/Schedules/Schedule1%20for%20Frost%20Free%20refrigerators.pdf
[4]http://www.clasponline.org/en/ResourcesTools/Resources/SLHeadlines/~/media/Files/SLHeadlines/IndiaWorks
hop/2012-02-07_Session1_Lab-role-in-MT_Intertek_MGuha.pdf
[5] https://docs.google.com/a/iiitd.ac.in/file/d/0B417fppWhh0taGhEVjB1M0hweUk/edit
[6] https://docs.google.com/a/iiitd.ac.in/file/d/0B417fppWhh0tTEU4US1iZ1ViZXM/edit
[7]https://docs.google.com/a/iiitd.ac.in/file/d/0B417fppWhh0tbjdjb0JidUc4eTg/edit
[8]https://docs.google.com/a/iiitd.ac.in/file/d/0B417fppWhh0tOG12Wm1STFlTSVE/edit
[9] http://en.wikipedia.org/wiki/Plug_computer
Repository Folder on Google Drive:
The following link refers to the folder that is archive of all the data collected:
http://goo.gl/B6PUi
SECTION-6: APPENDIX:
a) Shell Script -1 ak.sh
#!/bin/bash
# My first script
while :
do
acpi >> a.csv
sleep 1
done
******************************************************************************
b) Python Script -1 a.py
# The aim of the code is read the csv files and plot the graphs
#Author:-Akshit Gupta 2010012
#Current-6
#Voltage-2
#Active Power-3
#Reactive Power-7
#Phase Angle-10
#Frequency-1
import csv;
import pylab as plt;
def getColumn(filename, column):
results = csv.reader(open(filename), delimiter=',')
return [result[column] for result in results]
print "Frequency-1"
print "Voltage-2"
print "Active Power-3"
print "Current-6"
print "Reactive Power-7"
print "Phase Angle-10"
x = int(raw_input("Enter the column number"));
x1 = float(raw_input("Enter the lower limit"));
x2 = float(raw_input("Enter the upper limit"));
fl = raw_input("enter the file name:");
#time = getColumn("filename",0)
#For the current
curr = getColumn(fl,x)
plt.ylim(x1,x2)
plt.subplot(1,2,1)
plt.ylim(x1,x2)
plt.plot(curr)
fl2 = raw_input("Enter the file name(with power saver):");
plt.ylim(x1,x2)
freq2 = getColumn(fl2,x)
plt.ylim(x1,x2)
plt.subplot(1,2,2)
plt.ylim(x1,x2)
plt.plot(freq2)
plt.show()
******************************************************************************
c) Python Script-2 a1.py
# The aim of the code is read the csv files and plot the graphs
#Author:-Akshit Gupta 2010012
#Current-6
#Voltage-2
#Active Power-3
#Reactive Power-7
#Phase Angle-10
#Frequency-1
import csv;
import pylab as plt;
print("\n\n*************************\n");
print("Frequency-1");
print("Voltage-2");
print("Active Power-3");
print("Current-6");
print("Reactive Power-7 ");
print("Phase Angle-10");
print("\n\n*************************\n\n");
def getColumn(filename, column):
results = csv.reader(open(filename), delimiter=',')
return [result[column] for result in results]
x = int(raw_input("Enter the column number"));
fl = raw_input("enter the file name:");
#time = getColumn("filename",0)
#For the current
curr = getColumn(fl,x)
plt.subplot(1,2,1)
plt.plot(curr)
fl2 = raw_input("Enter the file name(with power saver):");
freq2 = getColumn(fl2,x)
plt.subplot(1,2,2)
plt.plot(freq2)
plt.show()
******************************************************************************
d) BatteryGraph.java—Android Project
package net.sf.andbatdog.batterydog;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.util.ArrayList;
import android.app.Activity;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.os.Bundle;
import android.os.Environment;
import android.view.Display;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.view.WindowManager;
public class BatteryGraph extends Activity {
private final static String TAG = "BATDOG.graph";
private final static int MENU_8H = 1;
private final static int MENU_24H = 2;
private final static int MENU_7DAYS = 3;
private final static int MENU_ALL = 4;
private final static int margXLeft = 5;
private final static int margXRight = 5;
private final static int margYTop = 60;
private final static int margYBottom = 5;
private long width = 300;
private long height = 300;
private long w = width - margXLeft - margXRight;
private long h = height - margYTop - margYBottom;
private long mDeltaTime = 24*60*60*1000;
private long mOffset = 0;
private GraphView mGraphView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mGraphView = new GraphView(this);
setContentView(mGraphView);
}
/**
* Called when your activity's options menu needs to be created.
*/
@Override
public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
menu.add(Menu.NONE, MENU_8H, Menu.NONE, "8h");
menu.add(Menu.NONE, MENU_24H, Menu.NONE, "24h");
menu.add(Menu.NONE, MENU_7DAYS, Menu.NONE, "7 days");
menu.add(Menu.NONE, MENU_ALL, Menu.NONE, "all");
return true;
}
/**
* Called when a menu item is selected.
*/
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (item.getItemId() == MENU_8H) {
mDeltaTime = 8*60*60*1000;
mOffset = 0;
mGraphView.invalidate();
}
else if (item.getItemId() == MENU_24H) {
mDeltaTime = 24*60*60*1000;
mOffset = 0;
mGraphView.invalidate();
}
else if (item.getItemId() == MENU_7DAYS) {
mDeltaTime = 7*24*60*60*1000;
mOffset = 0;
mGraphView.invalidate();
}
else if (item.getItemId() == MENU_ALL) {
mDeltaTime = 0;
mOffset = 0;
mGraphView.invalidate();
}
return true;
}
@Override
public boolean onTrackballEvent(MotionEvent event) {
super.onTrackballEvent(event);
if (event.getAction() == MotionEvent.ACTION_DOWN) {
mOffset = 0;
mGraphView.invalidate();
}
else if (event.getAction() == MotionEvent.ACTION_MOVE) {
float x = event.getRawX();
if (x < 0) {
mOffset -= mDeltaTime/5;
mGraphView.invalidate();
}
else if (x>0) {
mOffset += mDeltaTime/5;
if (mOffset > 0)
mOffset = 0;
mGraphView.invalidate();
}
}
return true;
}
private class GraphView extends View {
private Paint mPaint = new Paint();
private BatteryRecord[] mRecords;
private float mLastX;
private void readRecords() {
try {
mRecords = readLog();
}
catch (Exception e) {
Log.e(TAG,e.getMessage(), e);
}
}
@Override
public boolean onTouchEvent(MotionEvent event) {
super.onTouchEvent(event);
if (event.getAction() == MotionEvent.ACTION_DOWN) {
mLastX = event.getRawX();
}
else if (event.getAction() == MotionEvent.ACTION_MOVE) {
//
Log.i(TAG, event.toString()+" - " + event.getHistorySize());
float x = event.getRawX();
float dx = x-mLastX;
mLastX = x;
long ldx = (long)(mDeltaTime*dx/width);
mOffset -= ldx;
if (mOffset > 0)
mOffset = 0;
mGraphView.invalidate();
}
return true;
}
public GraphView(Context context) {
super(context);
readRecords();
Display = ((WindowManager)
context.getSystemService(WINDOW_SERVICE)).getDefaultDisplay();
width = display.getWidth();
height = display.getHeight();
w = width - margXLeft - margXRight;
h = height - margYTop - margYBottom;
}
@Override protected void onDraw(Canvas canvas) {
Paint = mPaint;
paint.setStrokeWidth(0);
Paint paintP = new Paint();
paintP.setStrokeWidth(0);
paintP.setColor(Color.YELLOW);
Paint paintV = new Paint();
paintV.setStrokeWidth(0);
paintV.setColor(Color.RED);
Paint paintT = new Paint();
paintT.setStrokeWidth(0);
paintT.setColor(Color.GREEN);
canvas.drawColor(Color.BLACK);
if ((mRecords == null) || (mRecords.length == 0)) {
paint.setColor(Color.WHITE);
canvas.drawText("no data found", 10, 50, paint);
return;
}
drawMarker(canvas, paintP, paintV, paintT);
int maxRec = mRecords.length;
long minTime = mRecords[0].timestamp;
long maxTime = mRecords[maxRec-1].timestamp;
long dTime = maxTime-minTime;
if (mDeltaTime != 0) {
dTime = mDeltaTime;
minTime = maxTime-dTime+mOffset;
}
BatteryRecord rec;
BatteryRecord oldRec;
for (int i = 0; i <= maxRec; i++) {
if (i == 0)
oldRec = new BatteryRecord(0, minTime, 0, 100, 0, 0);
else
oldRec = mRecords[i-1];
if (i == maxRec)
rec = new BatteryRecord(0, maxTime, 0, 100, 0, 0);
else
rec = mRecords[i];
drawRecordLine(canvas, rec, oldRec, minTime, dTime, paintP, paintV,
paintT);
}
}
private void drawMarker(Canvas, Paint paintP, Paint paintV, Paint paintT) {
Paint = new Paint();
for (int i = 0; i <= 10; i++) {
if (i == 5)
paint.setColor(Color.GRAY);
else
paint.setColor(Color.DKGRAY);
float x = margXLeft;
float y = margYBottom+h*(10-i)/10;
canvas.drawLine(x, y, x+w, y, paint);
}
canvas.drawText("100%", margXLeft, margYBottom+13, paintP);
canvas.drawText("4V", margXLeft, margYBottom+h*6/10+13, paintV);
canvas.drawText("30°", margXLeft, margYBottom+h*7/10+13, paintT);
canvas.drawText("100%", margXLeft+w-20, margYBottom+13, paintP);
canvas.drawText("4V", margXLeft+w-20, margYBottom+h*6/10+13, paintV);
canvas.drawText("30°", margXLeft+w-20, margYBottom+h*7/10+13, paintT);
}
private void drawRecordLine(Canvas canvas,
BatteryRecord rec, BatteryRecord oldRec,
long minTime, long dTime,
Paint paintP, Paint paintV, Paint paintT
){
float x1 = margXLeft+(w*(oldRec.timestamp-minTime)) / dTime;
float yP1 = margYBottom+h-(h*oldRec.level) / rec.scale;
float yV1 = margYBottom+h-(h*oldRec.voltage) / 10000;
float yT1 = margYBottom+h-(h*oldRec.temperature) / 1000;
float x2 = margXLeft+(w*( rec.timestamp-minTime)) / dTime;
float yP2 = margYBottom+h-(h* rec.level) / rec.scale;
float yV2 = margYBottom+h-(h* rec.voltage) / 10000;
float yT2 = margYBottom+h-(h* rec.temperature) / 1000;
if (rec.count == 1) {
canvas.drawLine(x1, yP1, x1, margYBottom+h, paintP);
canvas.drawLine(x1, yV1, x1, margYBottom+h, paintV);
canvas.drawLine(x1, yT1, x1, margYBottom+h, paintT);
canvas.drawLine(x2, yP2, x2, margYBottom+h, paintP);
canvas.drawLine(x2, yV2, x2, margYBottom+h, paintV);
canvas.drawLine(x2, yT2, x2, margYBottom+h, paintT);
}
else {
canvas.drawLine(x1, yP1, x2, yP2, paintP);
canvas.drawLine(x1, yV1, x2, yV2, paintV);
canvas.drawLine(x1, yT1, x2, yT2, paintT);
}
}
}
// class BatRecCache {
//
float x;
//
float yP;
//
float yV;
//
float yT;
//
public BatRecCache(BatteryRecord rec) {
//
}
// }
//
class BatteryRecord {
int count;
long timestamp;
int level;
int scale;
int voltage;
int temperature;
public BatteryRecord(int count, long timestamp, int level, int scale, int voltage, int
temperature) {
this.count = count;
this.timestamp = timestamp;
this.level = level;
this.scale = scale;
this.voltage = voltage;
this.temperature = temperature;
}
}
private BatteryRecord[] readLog() throws Exception {
ArrayList<BatteryRecord> result = new ArrayList<BatteryRecord>();
File root = Environment.getExternalStorageDirectory();
if (root == null)
throw new Exception("external storage dir not found");
File batteryLogFile = new File(root,BatteryDog_Service.LOGFILEPATH);
if (!batteryLogFile.exists())
throw new Exception("logfile '"+batteryLogFile+"' not found");
if (!batteryLogFile.canRead())
throw new Exception("logfile '"+batteryLogFile+"' not readable");
FileReader reader = new FileReader(batteryLogFile);
BufferedReader in = new BufferedReader(reader);
String line = in.readLine();
while (line != null) {
BatteryRecord rec = parseLine(line);
if (rec == null)
Log.e(TAG, "could not parse line: '"+line+"'");
else
result.add(rec);
line = in.readLine();
}
in.close();
return (BatteryRecord[]) result.toArray(new BatteryRecord[result.size()]);
}
private BatteryRecord parseLine(String line) {
if (line == null)
return null;
String[] split = line.split("[;]");
if (split.length < 6)
return null;
if (split[0].equals("Nr"))
return null;
try {
int count = Integer.parseInt(split[0]);
long timestamp = Long.parseLong(split[1]);
int level = Integer.parseInt(split[2]);
int scale = Integer.parseInt(split[3]);
int voltage = Integer.parseInt(split[4]);
int temperature = Integer.parseInt(split[5]);
return new BatteryRecord(count, timestamp, level, scale, voltage,
temperature);
}
catch (Exception e) {
Log.e(TAG,"Invalid format in line '"+line+"'");
return null;
}
}
}
******************************************************************************
e) Log. Java – Android Java class
package net.sf.andbatdog.batterydog;
public class Log {
private final static boolean logEnabled = false;
public static void i(String tag, String msg) {
if (logEnabled) {
android.util.Log.i(tag, msg);
}
}
public static void e(String tag, String msg, Throwable tr) {
android.util.Log.e(tag, msg, tr);
}
public static void e(String tag, String msg) {
if (logEnabled) {
android.util.Log.e(tag, msg);
}
}
}
******************************************************************************
f) BatteryDog.java –Android App class
package net.sf.andbatdog.batterydog;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Environment;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
public class BatteryDog extends Activity {
private static final int OUTPUT_LINES = 100;
private static final int LINE_LENGTH = 50;
private static final String TAG = "BATDOG";
private Button btStart;
private Button btStop;
private Button btRawFormat;
private Button btShowFormated;
private Button btGraph;
private EditText mOutput;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.battery_dog);
mOutput= (EditText) findViewById(R.id.output);
// find buttons in view
btStart = ((Button) findViewById(R.id.btStart));
btStop = ((Button) findViewById(R.id.btStop));
btRawFormat= ((Button) findViewById(R.id.btRawFormat));
btShowFormated= ((Button) findViewById(R.id.btShowFormated));
btGraph = ((Button) findViewById(R.id.btGraph));
// set actions for buttons
btStart.setOnClickListener(StartServiceListener);
btStop.setOnClickListener(StopServiceListener);
btRawFormat.setOnClickListener(RawFormatListener);
btShowFormated.setOnClickListener(ShowFormatedListener);
btGraph.setOnClickListener(GraphListener);
}
OnClickListener StartServiceListener = new OnClickListener() {
public void onClick(View v) {
try {
startService(new Intent(BatteryDog.this, BatteryDog_Service.class));
} catch (Exception e) {
Log.e(TAG, e.getMessage(), e);
Toast.makeText(BatteryDog.this, "Start Service failed: "+e.getMessage(),
Toast.LENGTH_SHORT).show();
}
}
};
OnClickListener StopServiceListener = new OnClickListener() {
public void onClick(View v) {
try {
stopService(new Intent(BatteryDog.this, BatteryDog_Service.class));
} catch (Exception e) {
Log.e(TAG, e.getMessage(), e);
Toast.makeText(BatteryDog.this, "Stop Service failed: "+e.getMessage(),
Toast.LENGTH_SHORT).show();
}
}
};
OnClickListener RawFormatListener = new OnClickListener() {
public void onClick(View v) {
updateLog(false);
}
};
OnClickListener ShowFormatedListener = new OnClickListener() {
public void onClick(View v) {
updateLog(true);
}
};
OnClickListener GraphListener = new OnClickListener() {
public void onClick(View v) {
startActivity(new Intent(BatteryDog.this, BatteryGraph.class));
}
};
private void updateLog(boolean doFormat) {
try {
File root = Environment.getExternalStorageDirectory();
if (root == null)
throw new Exception("external storage dir not found");
File batteryLogFile = new File(root,BatteryDog_Service.LOGFILEPATH);
if (!batteryLogFile.exists())
throw new Exception("logfile '"+batteryLogFile+"' not found");
if (!batteryLogFile.canRead())
throw new Exception("logfile '"+batteryLogFile+"' not readable");
long len = batteryLogFile.length();
int size = (int)Math.min((long)OUTPUT_LINES*LINE_LENGTH, len);
StringBuffer text = new StringBuffer(size);
FileReader reader = new FileReader(batteryLogFile);
BufferedReader in = new BufferedReader(reader);
if (doFormat) {
text.append(in.readLine()).append("\n");
}
if (len > OUTPUT_LINES*LINE_LENGTH) {
in.skip(len-OUTPUT_LINES*LINE_LENGTH);
// skip incomplete line
in.readLine();
}
String line = in.readLine();
while (line != null) {
if (doFormat) {
line = parseLine(line);
}
if (line != null)
text.append(line).append("\n");
line = in.readLine();
}
in.close();
mOutput.setText(text.toString());
}
catch (Exception e) {
Log.e(TAG,e.getMessage(),e);
mOutput.setText(e.getMessage());
}
}
private SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");
private DecimalFormat dfT = new DecimalFormat("###.#");
private DecimalFormat dfV = new DecimalFormat("##.###");
private String parseLine(String line) {
if (line == null)
return line;
String[] split = line.split("[;]");
if (split.length < 6)
return line;
if (split[0].equals("Nr"))
return line;
try {
int count = Integer.parseInt(split[0]);
long time = Long.parseLong(split[1]);
int level = Integer.parseInt(split[2]);
int scale = Integer.parseInt(split[3]);
int percent = level*100/scale;
int voltage = Integer.parseInt(split[4]);
int temperature = Integer.parseInt(split[5]);
double v = 0.001*voltage;
double t = 0.1*temperature;
String timestamp = sdf.format(new Date(time));
StringBuffer result = new StringBuffer();
result.append(Integer.toString(count)).append(". ")
.append(timestamp).append(" ")
.append(percent).append("% ")
.append(dfV.format(v)).append("V ")
.append(dfT.format(t)).append("° ")
;
for (int i = 6; i < split.length; i++) {
result.append(" ").append(split[i]);
}
return result.toString();
//
//
//
}
catch (Exception e) {
Log.e(TAG, e.getMessage(), e);
return line;
}
}
}
******************************************************************************
g) BatteryDog_Service.java – Android
package net.sf.andbatdog.batterydog;
import java.io.File;
import java.io.FileWriter;
import android.app.Service;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.os.Environment;
import android.os.IBinder;
import android.widget.Toast;
public class BatteryDog_Service extends Service {
private final static String TAG = "BATDOG.service";
public static final String LOGFILEPATH = "BatteryDog/battery.csv";
private final static String[] batteryExtraKeys = {"level", "scale", "voltage", "temperature",
"plugged", "status", "health", "present", "technology", "icon-small"};
private File mBatteryLogFile;
private int mCount;
private Intent mLastBatteryIntent;
private boolean mQuitThread;
private boolean mThreadRunning;
@Override
public void onCreate() {
super.onCreate();
if (!mThreadRunning) {
mCount = 0;
mLastBatteryIntent = null;
mQuitThread = false;
Thread thr = new Thread(null, mTask, "BatteryDog_Service");
thr.start();
registerReceiver(mBatInfoReceiver, new
IntentFilter(Intent.ACTION_BATTERY_CHANGED));
Toast.makeText(this, "BatteryDog Service started", Toast.LENGTH_SHORT).show();
}
}
@Override
public void onDestroy() {
Log.i(TAG, "onDestroy");
mQuitThread = true;
notifyService();
super.onDestroy();
unregisterReceiver(mBatInfoReceiver);
Toast.makeText(this, "BatteryDog Service stopped", Toast.LENGTH_SHORT).show();
}
@Override
public IBinder onBind(Intent intent) {
return null;
}
private BroadcastReceiver mBatInfoReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context ctx, Intent intent) {
try {
mCount += 1;
mLastBatteryIntent = (Intent) intent.clone();
notifyService();
}
catch (Exception e) {
Log.e(TAG,e.getMessage(), e);
}
}
};
private void logBattery(Intent batteryChangeIntent) {
if (batteryChangeIntent == null)
return;
try {
FileWriter out = null;
if (mBatteryLogFile != null) {
try {
out = new FileWriter(mBatteryLogFile, true);
}
catch (Exception e) {}
}
if (out == null) {
File root = Environment.getExternalStorageDirectory();
if (root == null)
throw new Exception("external storage dir not found");
mBatteryLogFile = new
File(root,BatteryDog_Service.LOGFILEPATH);
boolean fileExists = mBatteryLogFile.exists();
if (!fileExists) {
mBatteryLogFile.getParentFile().mkdirs();
mBatteryLogFile.createNewFile();
}
if (!mBatteryLogFile.exists())
throw new Exception("creation of file
'"+mBatteryLogFile.toString()+"' failed");
if (!mBatteryLogFile.canWrite())
throw new Exception("file '"+mBatteryLogFile.toString()+"'
is not writable");
out = new FileWriter(mBatteryLogFile, true);
if (!fileExists) {
String header = createHeadLine();
out.write(header);
out.write("\n");
}
}
if (mLastBatteryIntent != null) {
String extras = createBatteryInfoLine(mLastBatteryIntent);
out.write(extras);
out.write("\n");
}
out.flush();
out.close();
} catch (Exception e) {
Log.e(TAG,e.getMessage(),e);
}
}
private String createHeadLine() {
StringBuffer result = new StringBuffer();
result.append("Nr;TimeMillis");
for (String key : batteryExtraKeys)
result.append(";").append(key);
return result.toString();
}
private String createBatteryInfoLine(Intent batteryIntent) {
StringBuffer result = new StringBuffer();
result.append(Integer.toString(mCount)).append(";").append(Long.toString(System.curre
ntTimeMillis()));
Bundle extras = batteryIntent.getExtras();
for (String key : batteryExtraKeys)
result.append(";").append(extras.get(key));
return result.toString();
}
/**
* The function that runs in our worker thread
*/
Runnable mTask = new Runnable() {
public void run() {
mThreadRunning = true;
Log.i(TAG,"STARTING BATTERYDOG TASK");
while (!mQuitThread) {
logBattery(mLastBatteryIntent);
synchronized (BatteryDog_Service.this) {
try {
BatteryDog_Service.this.wait();
} catch (Exception ignore) {}
}
}
mThreadRunning = false;
logBattery(mLastBatteryIntent);
Log.i(TAG,"LEAVING BATTERYDOG TASK");
}
};
public void notifyService() {
synchronized (BatteryDog_Service.this) {
BatteryDog_Service.this.notifyAll();
}
}
}
******************End of Report*********************