Ultrasonic detection and communication system for automobiles

Details Ultrasonic detection and communication system for automobiles Ultrasonic detection and communication system for automobiles

1983-07-26

1986-04-01

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Echo systems

Distance or direction finding

340904, 367111, 367909, G01S 1593

Patent

active

045802505

ABSTRACT:
An ultrasonic detection circuit for detecting obstacles behind a backing motor vehicle, and an ultrasonic communication circuit are automatically switched such that the ultrasonic detection circuit is operable only when the communication circuit is not in use. Furthermore, the ultrasonic detection circuit may be operated only when the motor vehicle is in one or more particular operating conditions. The system comprises a rear ultrasonic transducer used for both the detection circuit and for the communication circuit so that detection of obstacles behind the vehicle and communication with another motor vehicle behind the vehicle are possible, and a front ultrasonic transducer used for only the communication circuit so that communication with another motor vehicle ahead of the vehicle is also possible. The rear and front transducers are directly connected to a call signal responding circuit of the communication circuit so that the call signal responding circuit is capable of responding to a call signal from a vehicle ahead of or behind the vehicle.

REFERENCES:
patent: 3231852 (1966-01-01), Kritz
patent: 4490716 (1984-12-01), Tsuda et al.

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