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Title:
AUTOMATIC BRAKING DEVICE OF VEHICLE
Document Type and Number:
Japanese Patent JPH0524524
Kind Code:
A
Abstract:

PURPOSE: To improve safety by changing the threshold to a larger value when a judgement is made whether or not the contact of a vehicle with an obstacle is possible when the vehicle is travelling at the higher speed in the case when automatic braking mode is being applied basing on a judgement of any danger of possible collision with an obstacle.

CONSTITUTION: While a vehicle is travelling, a calculating unit 32 calculates the distance between the vehicle and an obstacle in the forward and the relative speed therebetween based on the outputs from a pair of right and left radar head units 33, 34 located in the forward part of the vehicle. When the distance between the vehicle and the forward obstacle becomes smaller than the threshold of danger of collision, a control unit 45 actuates an actuator 16, and switching of the valve of an automatic braking valve unit is made to realize automatic braking. There is provided to the control unit a threshold value changing means 53 to change the threshold of danger of collision in a collision danger judging means 41 to a larger value when the vehicle's speed detected by means of a vehicle's speed sensor 42 is the higher, and the degree of applicability of automatic braking is changed according to the vehicle's speed.


Inventors:
YOSHIOKA TORU
OKUDA KENICHI
KAMIMURA HIROKI
YAMAMOTO YASUNORI
ADACHI TOMOHIKO
DOI AYUMI
KITAYAMA ICHIRO
NISHITAKE HIDEKI
Application Number:
JP18732091A
Publication Date:
February 02, 1993
Filing Date:
July 26, 1991
Export Citation:
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Assignee:
MAZDA MOTOR
International Classes:
B60T7/12; B60R21/00; B60T8/172; B60T8/1763; B60T8/32; B60W30/00; (IPC1-7): B60T7/12; B60T8/32
Attorney, Agent or Firm:
Hiroshi Maeda (2 outside)



 
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