Title:
【発明の名称】衝突センサ
Document Type and Number:
Japanese Patent JP2755502
Kind Code:
B2
Abstract:
An electronic crash sensor which can operate appropriately in response to any form of crash of any vehicle, more especially to a high speed oblique or pole crash of a vehicle which has a less rigid body or to a compound crash which is compound of various forms of crash, to say nothing of a high speed oblique or pole crash of a vehicle which has a normal rigid body. An input acceleration waveform from an accelerometer is processed to peak cut any portion thereof lower than a predetermined value. Then, the value obtained by the said peak cutting is time integrated. Then, a time integrated value of a predetermined function is subtracted from the value obtained by the said time integration. Then, the value of the acceleration waveform thus obtained is firstly compared with a predetermined time function value, and when the former is higher than the latter, a triggering signal is developed, while a diffrential of the said values of the acceleration waveform per a predetermined time value is secondly compared with a predetermined value, and when the former is higher than the latter, a triggering signal is developed. And further, the said first comparing means and the said second comparing means are connect with a trigger circuit to trigger a passenger protecing apparatus called an air bag by way of a connecting means.
Inventors:
MORYAMA HIROSHI
SADA HIROYUKI
SHIOZAWA TAKEO
SADA HIROYUKI
SHIOZAWA TAKEO
Application Number:
JP11682791A
Publication Date:
May 20, 1998
Filing Date:
April 19, 1991
Export Citation:
Assignee:
SENSAA TEKUNOROJII KK
International Classes:
B60R21/00; B60R21/01; B60R21/16; G01P15/00; (IPC1-7): B60R21/32
Domestic Patent References:
| JP3253441A | ||||
| JP4955031A |
Attorney, Agent or Firm:
Kaji Yoshiyuki