(880 kB PowerPoint)

advertisement
Bike Race Tracking
System
Team: Half n’ Half
PDR
Jasmine Jihyun Kim, Claire Lawson, Jason Myer,
Gabriel Seitz, Kevin Sternberg, Julie Yamashita
PDR Outline

Mission Statement

Overview

Position Tracking
 ZigBee
 Wi-Fi

Functional Decomposition

Sub-Systems
 RFID

Labor

Time Management

Budget

Risk and Contingency Plans

Resources
 Bike Module
 Checkpoint Server
 Main Server
 Displays
Half n' Half PDR
6/27/2016
2
Mission Statement
 Our goal is to create a wireless system that tracks in
real-time the location and ranking of cyclists in a bike
race and displays this to the spectators and each rider.
Half n' Half PDR
Photo Credit: http://randy4u.blogspot.com/2007_07_01_archive.html
6/27/2016
3
Overview
 Large display for spectators
 Small display on handlebars for each cyclist
 Final Demonstration vs Actual Implementation
Half n' Half PDR
6/27/2016
4
Objectives
Primary:
Create a wireless communication system
Accurately perform location tracking
Display information to bikers and spectators
•
•
•
Secondary:
LED spokes will show the biker's position as the
wheel spins
Detect speed of bike along with Position
•
•
Tertiary:
Alternative implementations: keeping track of children
at amusement parks or baggage when travelling
•
Half n' Half PDR
6/27/2016
5
Functional Decomposition: Level 0
Module
Race Position Tracker
Inputs
Bike Position in Race
Output
Ranking Information to be Displayed
Functionality
Calculate the position for each cyclist in the
race and display the ranking
Half n' Half PDR
6/27/2016
6
Functional Decomposition: Level 1
Half n' Half PDR
6/27/2016
7
UML
Half n' Half PDR
6/27/2016
8
Bike Module: Decomposition
Half n' Half PDR
6/27/2016
9
Bike Module: Functions
 Attached to each bike
 Acts as a mobile tracking device
 Sends its location to Checkpoint Server
 Receives current race ranking and updates Cyclist
Display
Half n' Half PDR
Photo Credit: http://www.mauiroadbikerentals.com/
6/27/2016
10
Bike Module: Requirements
 Able to transmit information regarding its current
location
 Able to receive information from Main Server regarding
placement of bike in race
Half n' Half PDR
6/27/2016
11
Checkpoint Server:
Decomposition


Half n' Half PDR
6/27/2016
12
Checkpoint Server: Functions
 Bikes can distance far away from Main Server
throughout the race
 Range from Main Server to Bike may be too far
 Multiple checkpoints will be set up around track to
minimize distance from Bike
 Facilitates communication between Bike and Main
Server
 Determines and stores cyclists' location
 Transmits location to Main Server
Half n' Half PDR
6/27/2016
13
Checkpoint Server:
Requirements
 Able to receive information regarding position of Bike
Module
 Able to store the location of multiple Bike Module
locations
 Transmit location of each Bike Module to Main Server
Half n' Half PDR
6/27/2016
14
Main Server: Decomposition
Half n' Half PDR
6/27/2016
15
Main Server: Functions
 Processes all measured data to determine the ranking
of each cyclist
 Updates the Spectator Display with the ranking
 Transmits the ranking information to each cyclist
 Single transmission that will be decoded by each Bike
Module
Half n' Half PDR
6/27/2016
16
Main Server: Requirements
 Able to receive info from the Checkpoint Server
 Have enough memory and processing to handle the
ranking calculation
 Able to interface with Spectator Display
 Programmable to our custom code
 Interface with a computer to load program
 Transmit data to the Bike Module that contains the
ranking information
Half n' Half PDR
6/27/2016
17
RF Communication
 RF communication from bike to checkpoint and from
checkpoint to Main Server
 Easier for Main Server to transmit data to bike
 Use of antennas will help the signal strength
Half n' Half PDR
6/27/2016
18
Spectator Display Sub-System
 Communicates information about the bike race to the
spectators
 Receives information from Main Server
 Displays
 Position of each biker
 Map with each biker marked
Half n' Half PDR
6/27/2016
19
Cyclist Display Sub-System
 Communicates information about the bike race to the
bikers
 There will be a display on the bike for the biker's use
 Displays
 Placement of rider in bike race
Half n' Half PDR
6/27/2016
20
Position Tracking Options
 ZigBee
 Advantage: Low power, long ranges, cheap, adaptable to all
network topologies
 Disadvantage: Lots of static nodes
 Wi-Fi
 Advantage: Fast data rates, less nodes required
 Disadvantage: Large power consumption, bulkier in size,
expensive
 RFID
 Advantage: Low power,very long ranges
 Disadvantage: Limited transmit rate
Half n' Half PDR
6/27/2016
21
How Zigbee Works
 Zigbee protocol allows for ad-hoc communication
networks
 This can be used to calculate position by triangulation
using signal strength
Half n' Half PDR
6/27/2016
22
How to Find Cyclist Using Zigbee
 We will use Zigbee Technology to locate the biker
 The following system is just for the Bike Module and Checkpoint
Server
 3 Types of Zigbee Nodes: Mobile, Static and Gateway
 Mobile Nodes (Bike)
 Static Nodes (Network)
 Gateway Node (Checkpoint Server)
Half n' Half PDR
Photo Credit: http://www.freescale.com/files/microcontrollers/doc/brochure/PositionLocationMonitoring.pdf
6/27/2016
23
How to Find Cyclist Using Zigbee
 Gateway Node relays a signal to Static nodes
 Static Nodes use triangulation to locate the Mobile
Node
 Static Nodes relays location back to the Gateway Node
 Possibly using MC13224v or CC2431
Half n' Half PDR
6/27/2016
24
Zigbee Time Synchronization
 We are synchronizing all ZigBee nodes with each other
 Beacon best fits with peer-to-peer protocols
 Master-slave communications use time synchronizing
messages through beacons
 Still looking into time syncing protocols
Half n' Half PDR
Photo Credit: http://www.ece.uah.edu/~milenka/docs/dc_ssst05_synch.pdf
6/27/2016
25
Wi-Fi
 Beaconing and Bi-Directional Communication
 Performs location calculations through a unique
beaconing method
 Full bi-directional Wi-Fi connectivity and security, enabling
it to send and receive information from the network.
 Acknowledgements
 Capable of requesting and receiving acknowledgements
for user initiated data message or telemetry transmission.
Half n' Half PDR
6/27/2016
26
Wi-Fi
 Implementation
 Use existing WIFI system in conjunction with creating
hotspots
 Signal strengths (Using Speedtest.net)
Area
Location
Ping (ms)
Download
(Mbps)
Upload
(Mbps)
1
N
25
13.64
4.60
2
NE
27
13.68
6.66
3
E
27
10.70
1.08
4
SE
None
None
None
5
S
24
15.07
9.61
6
SW
32
1.81
0.14
7
W
31
10.73
7.00
8
NW
28
4.82
5.68
9
Middle
32
2.29
1.37
Half n' Half PDR
6/27/2016
27
Why not RFID?
 Passive
 Range is too short
 Unable to handle multiple units
 Active
 Same power consumption as Zigbee
 Limited transmit rate
 Unable to perform real-time tracking
Half n' Half PDR
6/27/2016
28
Our solution: Zigbee
 Very low power, capable data rate, low cost
 Can Tx data over longer ranges by relaying in a
network
 Max Nodes per Network: 65,000
Half n' Half PDR
Photo Credit:http://www.mouser.com/new/texasinstruments/ticc253x/
6/27/2016
29
Division of Labor
Jasmine
Claire
Jason
Gabe
Kevin
Julie
Bike Module Rx-Tx
System
P
S
P
Bike Module
Algorithm
S
S
P
Checkpoint System
Rx-Tx System
P
P
S
S
Checkpoint Server
Algorithm
P
S
S
P
Main Server Rx-Tx
System
S
P
Main Server
Algorithm
P
P
S
P
PCB Layout
Half n' Half PDR
P
P
Display Systems
P
P
P = Primary, S = Secondary
6/27/2016
30
Time Management – Fall
Half n' Half PDR
6/27/2016
31
Time Management – Spring
Half n' Half PDR
6/27/2016
32
Item Name/Description Unit Price
Quantity
Total Amount
Zigbee Static
Processor MC1322
$6
Zigbee Mobile
Processor MC1322
$6
5
$30
Zigbee Gateway Node
MC1322 + MCF520x
$21
2
$42
Antennas Titanis 2.4
GHz Swivel SMA
B4844-01 (Bike)
$33
5
$165
2.4GHz Duck Antenna
RP-SMA WRL-00558
(Nodes/Hub)
$11
36
$396
MSP430
$2
3
$6
Battery (Static and
Gateway Nodes)
$2
36
$72
Half n' Half PDR
34
$204
6/27/2016
B
u
d
g
e
t
33
PCB Design
($33 first board
+ $50 Tiling of
7 boards = 1
total board at
$83 each)
$83
6
$498
Node Stand
(PVC) 1" x 5'
$1.61
34
$54.74
LCD Display
20x4 5 Volt
(Bike)
$15
5
$75
Lightweight
Battery
LS14500
$6
5
$30
$200
1
$200
Workstation
Processor/Disp
lay
Total
Half n' Half PDR
$1,772.74
6/27/2016
B
u
d
g
e
t
C
o
n
t
i
n
u
e
d
34
Risks and Contingency Plans
 Zigbee parts may not be available (first chip CC2431 was not available).

Use different chip (MC13224v).
 Zigbee transmission might have interference

Place more static nodes around course to ensure all areas are covered.
 Zigbee transmission in air may be delayed substantially due to lots of activity
in the channel. (Ex: Wireless Headphones)
 Reduce transmission data packets so that there is less data is in air.
 Certain timing protocols can mess up the ZigBee algorithms

Use alternative timing protocols.
 Unfamiliar interface between Zigbee and wireless transmission of different
means.
 Prototype model.
Half n' Half PDR
6/27/2016
35
Questions?
Half n' Half PDR
Photo Credit: http://fpafinancialplanningblog.files.wordpress.com/2011/11/question.jpg
6/27/2016
36
Resources
 http://www.specifications.nl/zigbee/zigbee_UK.php
 http://www.ece.uah.edu/~milenka/docs/dc_ssst05_sync
h.pdf
 http://www.freescale.com/files/microcontrollers/doc/broc
hure/PositionLocationMonitoring.pdf
Half n' Half PDR
6/27/2016
37
Download