System and method for diagnosing characteristics of acceleration

Details System and method for diagnosing characteristics of acceleration System and method for diagnosing characteristics of acceleration

1993-05-10

1996-04-09

Wong, Peter S.

Electrical transmission or interconnection systems

Vehicle mounted systems

Automobile

307 91, 280735, 180272, B60R 2108

Patent

active

055064540

ABSTRACT:
An apparatus for diagnosing the characteristic of an acceleration sensor and a method for diagnosis thereof are disclosed. The acceleration sensor includes a movable electrode (or mass part) displaced in accordance with an acceleration and a fixed electrode disposed opposite to the movable electrode. In a diagnosis mode, a signal for diagnosis is applied to the fixed electrode so that an electrostatic force as a force corresponding to a predetermined acceleration is generated between the fixed electrode and the movable electrode. In the case where the acceleration sensor is sound, the movable electrode or mass part is normally displaced. A failure of the acceleration sensor, the deterioration thereof in performance, a change in characteristic thereof caused from the lapse of time, or the like is self-diagnosed by detecting a change in capacitance between the movable electrode and the fixed electrode upon generation of the diagnosis signal. The force corresponding to the predetermined acceleration may be an electromagnetic force or a mechanical oscillation based on a piezoelectric element.

REFERENCES:
patent: 4638179 (1987-01-01), Matles et al.
patent: 4869092 (1989-09-01), Bernard et al.
patent: 4950914 (1990-08-01), Kurihara et al.
patent: 5103667 (1992-04-01), Allen et al.
Reichl, Herbert, Micro System Technologies, Sep. 21, 1992, pp. 383-392.

Affiliated with

Also associated with

Rating

System and method for diagnosing characteristics of acceleration does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System and method for diagnosing characteristics of acceleration, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for diagnosing characteristics of acceleration will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-140945