Moving vehicle identification system

Details Moving vehicle identification system Moving vehicle identification system

1990-06-18

1993-03-23

Ng, Jin F.

Communications: electrical

Vehicle detectors

340905, 34082534, 34082554, 342 42, 342 44, G08G 101

Patent

active

051968460

ABSTRACT:
A system for exchanging information by means of transmitted RF signals between a fixed location interrogator and a vehicle transponder moving in the vicinity of the interrogator. The transponder responds to a first trigger signal from the interrogator by transmitting to the interrogator a first data message derived from data stored in a transponder memory. The interrogator then remotely reprograms the transponder memory and generates a second trigger pulse. The transponder responds to the second trigger pulse by transmitting the reprogrammed data it then stores and the interrogator analyzes the last mentioned transmission to determine if the transponder properly received and responded to the reprogramming.

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Report entitled, "Heavy Vehicle Electronic License Plate Program--AVI Test Program--Interim Report and Recommendations" by Castle Rock Consultants.
Report entitled, "Heavy Vehicle Electronic License Plate (HELP) Program--Automatic Vehicle Identification (AVI) Research and Development" Project Final Report, dated Mar., 1990 by Castle Rock Consultants.

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