Communications: electrical – Vehicle detectors – Speed and overspeed
Patent
1991-10-23
1993-08-24
Crosland, Donnie L.
Communications: electrical
Vehicle detectors
Speed and overspeed
340942, 340555, 340557, 342 20, 342104, 359145, 356 28, G08G 101, G01S 736
Patent
active
052392961
ABSTRACT:
Optical receiving system (20) and method are provided for receiving optical signals used to determine vehicle velocity. The receiver system (20) comprises an optical receiver unit (22) mounted on a vehicle (30) to detect an optical signal incident thereupon. The optical receiver unit (22) includes a radio frequency transmitter (44) for generating and transmitting a radio frequency signal when the optical receiver unit (22) detects an optical signal incident thereupon. The detector system further comprises an indicator unit (24) which includes a radio receiver (46) for receiving the radio frequency generated by the radio frequency transmitter (44) and for providing an indication of the reception thereof. In one embodiment, the indicator unit is a convention radar detection device. In one embodiment, a plurality of optical receiver units (22') are provided for positioning at differing locations upon a vehicle (30'). In another embodiment, a linear array (122) of optical receivers is provided. The radio frequency transmitter (44') of each optical receiver unit (22') transmits an encoded signal indicative of a location of the particular optical receiver unit (22') upon which an optical signal is incident.
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Black Box Technologies
Crosland Donnie L.
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