Obstacle detection system

Details Obstacle detection system Obstacle detection system

1985-05-10

1987-04-14

Jordan, Charles T.

Communications, electrical: acoustic wave systems and devices

Echo systems

Distance or direction finding

367 96, 367909, 180169, 340904, 901 1, 901 46, B62D 124, B25J 1900

Patent

active

046583858

ABSTRACT:
An obstacle detection system has a sensor unit including a plurality of ultrasonic transducers and sequentially changes the number of pulses provided to groups of transducers, thereby performing front center sensing, front right sensing and front left sensing. The time between emission of ultrasonic waves and reception of waves reflected by an obstacle is calculated by a timer. A microcomputer computes the distance data and position data of the obstacle in accordance with obtained timer data and sensing region data.

REFERENCES:
patent: 3493920 (1970-02-01), Macmunn
patent: 3842397 (1974-10-01), Sindle
patent: 4015232 (1977-03-01), Sindle
patent: 4240152 (1980-12-01), Duncan et al.
patent: 4357672 (1982-11-01), Howells et al.
patent: 4467313 (1984-08-01), Yoshino et al.
patent: 4490716 (1984-12-01), Tsuda et al.
patent: 4524356 (1985-06-01), Kodera et al.

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