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Title:
JUDGING DEVICE FOR QUICKLY DECELERATED STATE OF VEHICLE
Document Type and Number:
Japanese Patent JPH10142252
Kind Code:
A
Abstract:

To enable exact judgement of the quickly decelerated state of a vehicle even when acceleration at the time of the quick deceleration of the vehicle exceeds the detection range of an acceleration sensor.

Acceleration G detected by an acceleration sensor is read in, and when the acceleration G reaches the upper limit value GMAX of the detection range of the acceleration sensor, an increment is carried out in a counter D(step 120-122, 128). After that, the counted value of the counter D is compared (step 130, 134), and a constant A is set up to any of set values α, β, γ according to elapsed time after exceeding the upper limit value GMAX (step 132, 136, 138). After that, an acceleration GX for judging the quickly decelerated state of the vehicle from the constant A and the counted value of the counter D is computed (step 126).


Inventors:
HAYASHI MASAKI
YOSHIDA YUTAKA
Application Number:
JP29895996A
Publication Date:
May 29, 1998
Filing Date:
November 11, 1996
Export Citation:
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Assignee:
TOKAI RIKA CO LTD
International Classes:
G01P15/00; B60R21/16; (IPC1-7): G01P15/00; B60R21/32
Attorney, Agent or Firm:
Atsushi Nakajima (4 people outside)