Vehicle-surroundings monitoring apparatus

Details Vehicle-surroundings monitoring apparatus Vehicle-surroundings monitoring apparatus

1995-12-15

1997-08-05

Pihulic, Daniel T.

Communications: directive radio wave systems and devices (e.g.,

Return signal controls external device

Radar mounted on and controls land vehicle

G01S 1393

Patent

active

056547153

ABSTRACT:
A plurality of radar devices are provided on and along the periphery of a vehicle for monitoring in different directions. While sequentially switching the radar device to be used for the monitoring operation in response to a transmission-enable signal, a processing device detects, for each direction, presence of and distance to an obstacle or object on the basis of a phase difference (time difference) between signals transmitted and received via the corresponding radar device. Thus, the processing device causes an image display device to show the detected conditions around the vehicle and also causes a sound synthesizer to output a sound message to call the vehicle operator's attention.

REFERENCES:
patent: 4349823 (1982-09-01), Tagami et al.
patent: 4885590 (1989-12-01), Hasan

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