Communications: electrical – Land vehicle alarms or indicators – Of relative distance from an obstacle
Patent
1991-03-13
1993-01-05
Crosland, Donnie L.
Communications: electrical
Land vehicle alarms or indicators
Of relative distance from an obstacle
340436, 340903, 340901, 340937, 340942, 358105, 358125, 180167, 180169, 180271, B60Q 100, G08G 116
Patent
active
051774623
ABSTRACT:
A car interval control apparatus composed of a tracking type range finder having a pair of optical systems arranged in a parallel relation and an image sensor disposed in connection with each of said optical systems, wherein a window is formed for a picture image of an object that is to be tracked and sensed by each of the image sensors. The distance to the object is measured, in accordance with a triangular method, on the basis of a shift of position of the picture image of the object displayed in the window. A observing means which emits light and observes forcible entry of an intervening car into a lane in front of and close to the driver's car by detecting light reflected by the intervening car. A control device controls the distance between the drivers car and the preceding car by using a signal produced from the tracking type range finder and generates an alarm when the forcibly entered car is detected by the observing means during the operation of the controlling of the distance of the cars.
REFERENCES:
patent: 4539590 (1985-09-01), Gage
patent: 4709264 (1987-11-01), Tamura et al.
patent: 4779095 (1988-10-01), Guerreri
patent: 4908704 (1990-03-01), Fujioka et al.
patent: 5026153 (1991-06-01), Suzuki et al.
Crosland Donnie L.
Mitsubishi Denki K.K.
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