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From: email@example.com (Sanjeev Gupta)
Subject: Vehicle Detection using RFID other technologies.
Date: 2 Nov 2002 00:52:33 -0800
NNTP-Posting-Date: 2 Nov 2002 08:52:33 GMT
We are looking for a transmitter/receiver that can detect a vehicle,
equipped with a transmitter, travelling at a speed of upto 100 km. per
hour on a highway. The receiver should be able to read a serial number
from the tag attached to the vehicle and send it to a receiver
attached to a computer via serial/USB port. There should not be any
restriction for direct line-of-sight between the vehicle and the
receiver/sensor. The sensor shall be placed at a distance of 100
meters from the vehicle. The sensors/transmitters should be able to
function in a rugged environment with dust and heat. There should be
no human intervention required. The product should be low-cost and
require no or little maintenance.
We will not be able to use the road loop antenna or overhead gantries.
Please keep the following issues in mind :-
1. The speed of the truck can be between 60 to 100 km/hr.
2. There can be more than one truck within the range of the receiver
at any given point.
3. The truck can stop witihin the receiver range. In such a situation
the receiver should not record multiple instances of the trucks
4. There can be bumper to bumber traffic and the truck can be in the
further most lane.
5. There could be line of sight between truck and receiver
6. Computer being on throughout, should not result frequent
7. Distance between truck and receiver can be upto 100 meters.
8. Climate conditions.
9. Power problems on non-city roads. Battery backups.
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