Communications – electrical: acoustic wave systems and devices – Echo systems – Distance or direction finding
Patent
1983-11-15
1986-10-21
Farley, Richard A.
Communications, electrical: acoustic wave systems and devices
Echo systems
Distance or direction finding
340904, 367909, G01S 1593
Patent
active
046189483
ABSTRACT:
An apparatus for detecting obstructions behind a vehicle, employing ultrasonic waves is disclosed. The apparatus comprises an ultrasonic transmitting and receiving device disposed on the rear portion of the vehicle, an electric motor for rotating the transmitting and receiving device at a constant velocity, an angle sensor for detecting the rotating angle of the transmitting and receiving device and a sonar circuit for emitting ultrasonic waves through the transmitting and receiving device at predetermined rotating angles, receiving ultrasonic waves reflected from obstructions through the transmitting and receiving device at predetermined rotating angles and measuring the distance to the obstructions from the time taken from the transmission to the reception of the ultrasonic waves. According to the apparatus of the present invention, the distances to obstructions in every region behind the vehicle can be accurately and easily measured by rotating a single transmitting and receiving device by means of the electric motor at a constant velocity.
REFERENCES:
patent: 4278962 (1981-07-01), Lin
patent: 4347591 (1982-08-01), Stembridge et al.
patent: 4467313 (1984-08-01), Yoshino et al.
patent: 4490716 (1984-12-01), Tsuda et al.
Akita Shigeyuki
Kodera Masao
Maeno Tsuyoshi
Sakakibara Hiroyuki
Farley Richard A.
Nippon Soken Inc.
LandOfFree
Apparatus for detecting obstructions behind vehicle does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for detecting obstructions behind vehicle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for detecting obstructions behind vehicle will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1293305