International Journal of Engineering Trends and Technology (IJETT) – Volume 10 Number 8 - Apr 2014
Diagnosing the Intermittent Failures in a Vehicle& Intelligent Vehicle
Control and Monitoring Using CAN and ARM 7
1]SippeeBharadwaj, 2]Mrs Anita R (GUIDE)
M.TechIn VLSI &Embedded System (EPCET)
Area Network) is a serial bus system, which was
Abstract—Taking into account the modern insecure
world vehicle safety is a challenging task. This paper
presents a design of a system which will prevent the
vehicle from accidents and diagnose the intermittent
failures in a vehicle by using CAN protocol and
ARM7 with the help of sensors .With the help of
BLUETOOTH and GSM connect to an android
mobile and develop anGoogle app for vehicle
parameters and send to vehicle maintenance dept.
originally developed for automotive applications in the
early 1980's.Controller Area Network (CAN) is a serial
communication protocol that may be used to transfer up
to 8 data bytes within a single message. CAN offers
high-speed communication rate up to 1M bits/sec thus
allows in real-time control applications. In addition, the
error confinementand the error detection feature make it
Keywords-ARM7,CAN, GSM,SENSORS,Bluetooth
more reliable in noise critical environment. Common
sensor data such as Engine control unit, Anti Lock
INTRODUCTION
System and etc., are available on the network, so the data
As the increasing of the amount of electronic
can be shared, thus eliminating the need for redundant
controller and instruments in the modern automotive, the
sensors.
vehicle reliability is largely influenced by the complexity
of circuit deployed in the control system. The high
III.THE WHOLE ARCHITECTURE OF THE
SYSTEM
quality vehicles use CAN (Controller Area network) bus
A. Block Diagram
system to link all the controllers in a system to achieve
unified management. This leads to easy data sharing and
ANDROID
ARM7
interoperability between different control systems.
CAN CONTROLLER
MOBILE
LCD
However, due to the complexity of vehicles, for example,
DEVICE
sensors are deployed throughout the entire vehicle with
CAN
MOTOR
DEIVER
diversified standards, the data within an automotive
LED&BUZZER
system are varied such as complex data format,
heterogeneous data so to fulfill the gap among different
systems one gateway is used which is a bridge to connect
various CAN bus with different speed ratio. Furthermore,
the vehicle system requires the information for the
maintainer and driver. It is necessary to design an
CAN
Eye-
CONTROLLER
efficient, reliable gateway as well as its data processing
AV
R
blinking(
sensor)
CAN
CONTROLL
ER
AV
R
Alcohol-
sensor
CAN
system. The most important is the physical connectivity
CAN
reduction. Only two wires are required to manage a
TRANSCEIVER
Gas
TRANSCEI
VER
different system, which necessitates an exchange of data
between them. This is only done by networking using
Fig1.B. Block diagram description
CAN (Controller Area Network) bus. CAN (Controller
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Tempsensor
International Journal of Engineering Trends and Technology (IJETT) – Volume 10 Number 8 - Apr 2014
1)CAN:CAN stand for controller area network.CAN is a
two-wire, Half duplex, high-speed network system and is
well suited for high-speed applications using short
messages
2) MicrocontrollerIn this project ARM7 is the heart of the system. ARM7
microcontroller is 32bit/64bit microcontroller .It is RISC
processor and consist of 16bit thumb instruction set .It
consists of in-built ADC channels where sensors will
connected.
on board GSM modem with help of AT commands&
connect to a vehicle maintenance dept.
IV. ALGORITHM AND WORKFLOW OF
THE SYSTEM
A. Algorithm of System Work
1) Start(initialization of microcontrollers)
2)
Waiting for message
3) AVRmicrocontroler is also usedin this project .
3) Message received than check for ID
Through inbuilt ADC, sensors are connected.
Programming is done in ARM7 microcontroller when
sense the parameters from other nodes and certain set
points will be there in programming if it crosses that
certain set poitnt led will be on and if again it crosses
than buzzer will be on than speed of the motor will be
slow it depends upon PWM and connected to GSM.
4) Alcohol Sensor& Eye-blinking sensor:
AVR sends and ARM-7 microcontroller first reads the
value of alcohol sensor if any alcohol is detected in the
driver’s cabin, the ignition is turned off. If in case of eye
blinking sensor depending upon PWM if the blink
decreases of a certain point than ARM7 sends the
message to reduce the speed of the motor.
5) LPG gas sensor :
5) Send to the arm7 controller with message ID
OF the nodes.
6) If the value exceeds the set point
7) Vehicle speed decrease
8) Else(continue)
9) Exit
IV.ADVANTAGES&DISADVANTAGES
A. Advantages
1) Security of vehicle.
ARM-7 reads the value of gas concentration if its below
the set point than motor will continue its speed and if it
crosses the set point than motor speed decreases.
6) Temperature-SENSORIt continuously monitors the
temperature of engine as well as cabin & sends its value
to microcontroller. If temperature of engine or cabin
exceeds desire value then system alerts to driver.
7) DC motor unit: I am designing my own vehicle unit
which consists of 2 DC motor based wheels. These
wheels are operated using 12v DC motor. The µC works
at 5v and the DC motors operate at 12V, so to match the
voltages we are interfacing a DC motor driver circuit
L293D which will in turn drive the DC motors.The speed
of the motors depends upon PWM.
8) GPS and GSM unit: The GPS unit sends the coordinates to the µC which stores these co-ordinates in its
ram location. Also various other parameters are also
stored in µC. Then after a specific time µC sends this
data to the base unit (surveillance unit) with the help of
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4) Store the sense parameter in some variables
2) Record driving data, collision data and
position data
3) Analyze the accidents detail.
4) Send location of car and its maintenance to
base station through GPS & GSM technique
5) Sense gas & fuel leakage and display its
status on car monitoring system.
6) Detect if the driver is drunk or not.
7) Detect if the driver is feeling sleepy.
8) Shows engine temperature.
9) Remote place data can be acquiescing.
10) Various difficult data like vibration can be
measured.
B. Disadvantages
1) Damage of sensor cannot be detected
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International Journal of Engineering Trends and Technology (IJETT) – Volume 10 Number 8 - Apr 2014
V. APPLICATION & FUTURE SCOPE
CONCLUSION
This paper gives an effective solution for the safety of
vehicle by designing and monitoring the vehicle different
parameters in a vehicle when the vehicle is in moving
state .Those parameters or dangers are send by different
sensors and send the information to the driver of vehicle
before any accident occur and also send those values to
an android mobile and then to vehicle maintenance dept.
A. Application
1) For Personal vehicle
2) Insurance companies.
3Research and development
4) Military
REFERENCES:
EYE-BLINKING COUNT
1]Automotive-electronicsWilliamRibbens(sixth-edition)
2] Zhang Jimmie, Li Wending, SA Cao, Wang Deming. The control
system remote Control automatic pruning machine [J].Beijing Forestry
University, 2007.7:33-36
[3] Shan Changing. The design of ultrasonic obstacle avoidance system
based on S3C2410 [J].Computer and digital engineering, 2009.2:55-57.
[4] Embedded system design book- Raj Kamal.
[5] www.keil.com/arm/
[6] www.embedded arm.com
DETECTION-SYSTEM
FAILURES)
(INTERMITTENT-
BIBLIOGRAPHY
1)
Miss
SippeeBharadwaj,
currently pursuing M.TECH 2014 in
VLSI&EMBEDDED
SYSTEM
from
VTU,BELGAUM.
2)MRS ANITA R(GUIDE)
Associate Professor, ECE DEPT Working in
EPCET,VTU,BANGALORE
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