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Intelligent Speed Intelligent Speed Adaptation in vehiclesAdaptation in vehicles
Date: 01/08/09Date: 01/08/09
Tamil Eniyan. MTamil Eniyan. M08MEA02608MEA026
M.Tech-Automotive ElectronicsM.Tech-Automotive Electronics
Review - 0
ContentsContents• Introduction
– Existing speed adaptation techniques
– Need
• System Overview
– Block diagram
– Steps
• Time plan
• Software tools
• Hardware modules
• Conclusion
IntroductionIntroduction
• The Intelligent Speed Adaptation is done in vehicle using
GPS technology by tracking the location of the vehicle
• This system does not require a preloaded map or route
for its operation
• This system is a low cost and effective system which
requires less memory and simple algorithm.
Existing speed adaptation techniquesExisting speed adaptation techniques
• RF id based systems– This system uses RF id tags on the sign boards, the receiver
module in the vehicle receives the signal at various speed zones through these RF tags.
• This systems can be employed only for slow vehicles. Practically it cannot be employed in the highway for vehicles with high speed like 100kmph
• Optical recognition systems– This is done by camera based detection, the camera records
continuously, when a sign boar is approached, the sign is recognized by image processing techniques.
• This system uses complex algorithm
• Uses much resources
• Some critical cases when the sign board is covered by tree branches, the system does not detect the sign board.
• GPS based systems– The GPS receiver module tracks its position and using the pre
loaded map and speed zone database, the speed adaptation is done
• Requires a large memory to store the complete map and speed zone databases.
• Emergency sign boards like “MEN AT WORK”, “TAKE DIVERSION” etc. are not fed to the receiver dynamically.
• Dead reckoning– Using sensors, it can plot the path taken by the vehicle. By
overlaying this path onto a digital map, the DR system knows approximately where the vehicle is, what the local speed limit etc.
• This system is much complicated with multiple sensors and possibility of deviation from actual data is high
Existing speed adaptation techniques
Need for a new systemNeed for a new system
• To over come the limitations of the other Speed adaptation systems.
• To reduce the memory requirement of conventional GPS speed adaptation techniques.
• To reduce the system cost and enhance the system performance to provide dynamic update of information.
Block DiagramBlock Diagram
GPS Receiver
RF Receiver
ControllerMemory
Display& Alert
Speed controller
RFTx
My position?
lat=12.970649lon=79.159310
1
2
3
4
TOLLGATE
Step 1Step 1
Transmitter sends a data to the vehicle.
The data is a table of information of latitude and longitude and its corresponding road sign, speed limit..
Step 2Step 2
GPS receiver requests its position data to satellite.
Step 3Step 3
GPS receiver receives its position data from satellite. lat=12.970649
long=79.159310
0001|76.11004|12.19256lat=12.970649
long=79.159310
Current Position
From GPS
A sample data from received data.
YESStep 4Step 4
The current position is compared with the data of table received.
When the current position reaches the position of data, corresponding alert is done.
Check for the corresponding
sign & speed limit
Alert the driver /Limit speed
=?
Time planTime plan
August Literature survey
September Selection of components/
Study about components selected(microcontroller, GPS, Speed control)October
November Basic hardware design
December Full Hardware Implementation (Speed Zone Detection & Alert)
January Programming
February Stage II development(speed control implementation)
March Project Completion
April Report Preparation
Software ToolsSoftware Tools
• Microcontroller Programming tools– Keil IDE – MPLAB IDE
• Flashing tool
Hardware modulesHardware modules
• GPS Receiver
• Microcontrollers
• Wireless Transmitter / Receiver
• Computer Interface
• Display unit
• Speed Control Module
Reference
• N. Agerholm,R, Waagepetersen,N. Tradisauskas,and H. Lahrmann 2008 - IEEE Intelligent Vehicles Symposium “Intelligent Speed Adaptation in Company Vehicles”
• Riaz Sayed, Pierre Delaigue, Jeremy Blum, Ali Mortazavi and
Azim Eskandarian 2007-01-1321 SAE TECHNICAL PAPER SERIES“Development of an Intelligent Multimode Speed Adaptation System”
• European Road Safety Observatory
“Intelligent Speed Adaptation (ISA)” http://www.erso.eu/knowledge/content/04_esave/
• University of Leeds and MIRA Ltd.
“Intelligent Speed Adaptation Literature Review and scoping study”- January 2006 http://www.tfl.gov.uk/assets/
Thank youThank you