Electro-optical monitoring system utilizing optical signal trans

Details Electro-optical monitoring system utilizing optical signal trans Electro-optical monitoring system utilizing optical signal trans

1992-06-08

1993-04-20

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Signal isolator

359155, G02B 2700

Patent

active

052045366

ABSTRACT:
An electro-optical monitoring system for monitoring objects, particularly vehicles, includes a plurality of optical signal transmitters carried by each monitored object (e.g. vehicle) according to predetermined geometrical patterns. An optical receiver at a remote location receives the transmitted optical signals and includes a processor which identifies the objects from the combination of the geometric pattern of transmitters thereon and the optical signals received therefrom. The transmitters may transmit differently-coded signals or signals of different wavelengths to aid in the identification of the respective object or to transmit other data.

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patent: 3886515 (1975-05-01), Cottin et al.
patent: 4026654 (1977-05-01), Beaurain
patent: 4706086 (1987-11-01), Panizza

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