Title:
ABNORMALITY DETECTING DEVICE OF ACCELERATION SENSOR
Document Type and Number:
Japanese Patent JP3135490
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To accurately detect abnormality of acceleration sensors by arranging two acceleration sensors, and judging it as abnormality of one acceleration sensor when one output hardly changes and the other changes.
SOLUTION: This device is provided first and second acceleration sensors M1 and M2 arranged so that the acceleration detecting directions respectively become a prescribed angle left and right in the vehicle longitudinal direction and a judging means M3 to judge it as abnormality of one acceleration sensor when a condition where a change width of detecting acceleration of either one acceleration sensor is less than a prescribed value continues for a preset time or more and a change width of detecting acceleration of the other acceleration sensor exceeds a preset value. Therefore, both the first and the second acceleration sensors detect acceleration in the case of longitudinal directional motion and turning motion of a vehicle. Therefore, when one output hardly changes for a prescribed time and the other output changes in a certain degree during that time, it can be regarded gas abnormality of one acceleration sensor.
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Inventors:
Kiyoyuki Uchida
Yoshifumi Yagi
Toyoharu Katsukura
Yoshifumi Yagi
Toyoharu Katsukura
Application Number:
JP26866995A
Publication Date:
February 13, 2001
Filing Date:
October 17, 1995
Export Citation:
Assignee:
トヨタ自動車株式会社
株式会社デンソー
株式会社デンソー
International Classes:
G01P21/00; B60T8/1755; B60T8/24; B60T8/58; G01D5/12; G01P15/00; G01P15/18; (IPC1-7): G01P21/00; B60T8/24; B60T8/58; G01D5/12; G01P15/18
Domestic Patent References:
| JP390864A | ||||
| JP4315058A | ||||
| JP60233563A | ||||
| JP460756U |
Attorney, Agent or Firm:
Tadahiko Ito