LASER RADAR DEVICE FOR VEHICLE

Japanese Patent JP3642227

B2

PROBLEM TO BE SOLVED: To prolong the service life of a laser diode and to save power consumption by stopping laser emission in the case of the undetected state of a preceding vehicle continuing up to the stop of its own vehicle when the preceding vehicle is put in the undetectable state after detecting the state of its own vehicle reducing speed and approaching the preceding vehicle.
SOLUTION: This laser radar distance measuring device 10 irradiates pulse-like laser beams every specified time and measures vehicle-to-vehicle distance to a preceding vehicle from the time required until receiving reflected light. An informing device 30 informs a driver of its own vehicle of the start of the preceding vehicle by means of a buzzer or the like, and its own vehicle speed detecting device 40 outputs pulse signals corresponding to the speed of its own vehicle. A processing part 20 composed of a microcomputer executes processing contents and controls the informing device 30. Laser emission is stopped in the case of the undetected state of the preceding vehicle continuing up to the stop of its own vehicle when the preceding vehicle is put in the undetected state after the laser radar distance measuring device 20 and its own vehicle speed detecting device 40 detects the state of its own vehicle reducing speed and approaching the preceding vehicle. Laser emission is resumed after the start of its own vehicle.

Akio Kawai

JP12582599A

April 27, 2005

May 06, 1999

Click for automatic bibliography generation  

Nissan Motor Co., Ltd

B60R21/00; B60W30/00; G01S17/93; (IPC1-7): G01S17/93; B60R21/00

JP10282236A
JP58027708U
JP4113085U
JP62259111A
JP62170868A
JP8184675A

Tetsuya Mori
Yoshiaki Naito
Cui Shu Tetsu
Toru Miyasaka

Previous Patent: SEMICONDUCTOR ELEMENT AND MANUFACTURE OF THE SAME

Next Patent: BPSK DEMODULATOR