Acceleration sensor unit having self-checking function

Details Acceleration sensor unit having self-checking function Acceleration sensor unit having self-checking function

1992-07-16

1994-12-27

Noland, Tom

Measuring and testing

Speed, velocity, or acceleration

Acceleration determination utilizing inertial element

73 1D, G01P 1509, G01P 2100

Patent

active

053754689

ABSTRACT:
This invention relates to an acceleration sensor system having a self-checking operation of an air bag safety system while a vehicle is being driven. An acceleration sensor element suitable for self-checking while a vehicle is driven is obtained by a planar piezoelectric element supported so that it can vibrate, a detecting electrode provided on an upper face of the planar piezoelectric element, and an actuator to add vibrations at a predetermined frequency to the planar piezoelectric element. A sensitivity checking circuit generates a sensitivity checking signal representing sensitivity of an acceleration sensed from a detected signal. A signal processing circuit generates an acceleration signal representing the applied acceleration to the acceleration sensor from the detected signal. An operation checking circuit generates a self-checking signal representing the operational state of the acceleration sensor system by checking the operation of the signal processing circuit and the acceleration sensor from the acceleration signal and the sensitivity checking signal.

REFERENCES:
patent: 3911391 (1975-10-01), Held et al.
patent: 4297888 (1981-11-01), Hirai et al.
patent: 4395908 (1983-08-01), Shopland
patent: 4520669 (1985-06-01), Rider
patent: 4615209 (1986-10-01), Change, Jr.
patent: 4700973 (1987-10-01), Gademann et al.
patent: 4950914 (1990-08-01), Kurihara et al.
patent: 5130600 (1992-07-01), Tomita et al.
patent: 5181011 (1993-01-01), Okano

Affiliated with

Also associated with

Rating

Acceleration sensor unit having self-checking function does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Acceleration sensor unit having self-checking function, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Acceleration sensor unit having self-checking function will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-910967