2. Introduction
Automatic vehicle location (AVL) is a computer –based
vehicle tracking system
The actual real –time position of each vehicle is
determined and relayed to a control center
AVL systems include: computer -aided dispatch
software, mobile data terminals, emergency alarms,
and digital communications
3. About GPS:
The GPS was specifically engineered so that at
least four of the 24 satellites would be
positioned on the horizon at all times.
GPS Satellite
4. What is AVL technology?
AVL systems use satellite and land communications to
display each vehicle's
location
status
heading
speed on the computer's
screen.
5. Navigation Technologies
Four Navigation Technologies. They are
1. Global Positioning System
2. Dead-Reckoning System
3. Signpost/Odometer Systems
4. Radio Navigation/Location
6. TRACKING SYSTEMS
There are two types of tracking systems
PASSIVE TRACKING
REAL TIME TRACKING
7. PASSIVE TRACKING:
It refers to stand-alone GPS Receivers, which stores
data for further process
Passive Tracking systems are limited to vehicle
tracking only
It stores the location, time, velocity and heading data
8. REAL TIME TRACKING:
It is based on mobile stand-alone terminals which
combine GPS and GSM to transmit their position
GPS Receiver
9. WORKING OF A GPS BASED AVL:
It contains the following
GPS SATELLITES
RADIO SYSTEM
COMMUNICATION CENTER
DISPATCH SECTION
CUSTOMER ASSISTANCE UNIT
10.
11. WORKING OF SIGNPOST BASED AVL:
It contains the following
Optical scanners
Magnetic strips
Beam emission
Short-range radio
16. Uses Of AVL
Vehicle location display in real-time.
Recording of arrival and departure times (proof of
delivery etc).
Monitoring of driving practices (speed).
Alerts if vehicle leaves or enters a defined area
17. Applications Of AVL
In Military
Geo-Caching
Track Anything
In Cargo
In cargo
18. Conclusion
By using GPS we track the location of the vehicle
It is a cost effective and efficient technique
It gives protection to the vehicles and also the accident
alerts