Short range ultrasonic distance warning system for motor vehicle

Details Short range ultrasonic distance warning system for motor vehicle Short range ultrasonic distance warning system for motor vehicle

1995-07-19

1996-11-05

Lobo, Ian J.

Communications, electrical: acoustic wave systems and devices

Echo systems

Distance or direction finding

367909, 340435, 180167, G01S 1500

Patent

active

055724841

ABSTRACT:
A short range ultrasonic distance warning system is used as a parking aid in a motor vehicle. The entire system is active in the case of reverse gear being selected and low speed, and is deactivated automatically at higher speed. If reverse gear is not being selected, only the system part for front space monitoring is active at low speed of travel, while the system is once again automatically kept inactivated at higher speed. This implements a parking aid which is convenient and avoids unnecessary system activations.

REFERENCES:
patent: 4015232 (1977-03-01), Sindle
patent: 4803670 (1989-02-01), Chen
patent: 4931930 (1990-06-01), Shyu et al.
patent: 5173881 (1992-12-01), Sindle
Ultraschallechos als Parkpilot, Radio Fernsehen Elekt, 1991, p. 594.

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