Moving obstacle detection system for a vehicle

Details Moving obstacle detection system for a vehicle Moving obstacle detection system for a vehicle

1982-09-29

1985-10-22

Groody, James J.

Communications: electrical

External condition vehicle-mounted indicator or alarm

Transmitter in one vehicle only

340901, 343 7VM, 367112, 367909, G08G 100, G01S 1593, G01S 1300

Patent

active

045491810

ABSTRACT:
A moving obstacle detection system using a Doppler radar device for an automotive vehicle which detects and informs a vehicle driver that another vehicle (moving obstacle) approaches or moves away from the detecting vehicle, wherein there is provided a means for determining whether the rate of change of the period of a Doppler signal outputted from the Doppler radar equipment with respect to time exceeds a predetermined value so that an erroneous alarm in response to a pedestrian or another vehicle traversing the front detection area of the vehicle, e.g., when vehicle is at rest at in an intersection is inhibited. Consequently, more reliable detection of approach or departure of another vehicle can be achieved.

REFERENCES:
patent: 3680085 (1972-07-01), Del Signore
patent: 3778823 (1973-12-01), Sato
patent: 3860923 (1975-01-01), Yamanaka
patent: 4240152 (1980-12-01), Duncan
patent: 4450430 (1984-05-01), Barishpolsky
patent: 4500977 (1985-02-01), Gelhard

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