automatic vehicle location
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AUTOMATIC VEHICLE LOCATION
ByCH. RAJUO8Q61A0514
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IntroductionAutomatic 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
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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
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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.
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Navigation Technologies Four Navigation Technologies. They are
1. Global Positioning System
2. Dead-Reckoning System
3. Signpost/Odometer Systems
4. Radio Navigation/Location
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TRACKING SYSTEMSThere are two types of tracking systems
PASSIVE TRACKING
REAL TIME TRACKING
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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
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REAL TIME TRACKING:It is based on mobile stand-alone terminals
which combine GPS and GSM to transmit their position
GPS Receiver
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WORKING OF A GPS BASED AVL:
It contains the following
GPS SATELLITES
RADIO SYSTEM
COMMUNICATION CENTER
DISPATCH SECTION
CUSTOMER ASSISTANCE UNIT
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WORKING OF SIGNPOST BASED AVL:
It contains the following
Optical scanners
Magnetic strips
Short-range radio
Beam emission
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SIGNPOST BASED AVL:
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GROUND BASED RADIO AVL:
. The system can operate with one or more antennas that broadcast a signal
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DEAD-RECKONING:
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AVL Benefits:
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Uses Of AVLVehicle 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
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Applications Of AVLIn MilitaryGeo-CachingTrack AnythingIn Cargo
In cargo
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ConclusionBy 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
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Thank You