Obstacle detecting device for vehicles

Details Obstacle detecting device for vehicles Obstacle detecting device for vehicles

1982-07-22

1985-06-18

Groody, James J.

Communications: electrical

External condition vehicle-mounted indicator or alarm

Transmitter in one vehicle only

367105, 367909, G08G 100

Patent

active

045243565

ABSTRACT:
An obstacle monitoring device for the rear of a vehicle comprising a plurality of ultrasonic obstacle detectors which are operated sequentially at a predetermined time interval, and an electronic monitor for supplying the obstacle detectors with their operational timing sequences at the predetermined time intervals and for determining distance information for each detector based on the changing pulse width of electric currents for each of the obstacle detectors within a particular time interval, which pulse widths correspond to the distance between an obstacle and the rear of the vehicle. A single transmission line connects the obstacle detectors with the monitor so that the number of wires in a wire-harness is reduced between the obstacle detectors (outside the vehicle) and the monitor (inside the vehicle).

REFERENCES:
patent: 3086195 (1963-04-01), Halliday
patent: 3936791 (1976-02-01), Kossoff
patent: 3950724 (1976-04-01), Honda
patent: 4240152 (1980-12-01), Duncan
patent: 4278962 (1981-07-01), Lin
patent: 4460987 (1984-07-01), Stokes
patent: 4462092 (1984-07-01), Kawabuchi
patent: 4467313 (1984-08-01), Yoshino

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