Accelerometer with optical switch

Details Accelerometer with optical switch Accelerometer with optical switch

1994-03-11

1996-03-05

Nimmo, Morris H.

Electricity: circuit makers and breakers

Special application

Change of inclination or of rate of motion responsive

200 6153, 280735, 307 101, H01H 3514

Patent

active

054969794

ABSTRACT:
An accelerometer (10) having a sensing mass (36) which is displaced in response to acceleration so as to alter the amount of light coupled between a pair of optical fibers (42, 44). An optical coupling is responsive to displacement of the sensing mass indicative of a vehicle crash situation. In operation, the sensing mass (36) interrupts the transmission of light through the output optical fiber (44) as the amount of sensing mass displacement reaches proximate a second position. The accelerometer further provides magnetic damping and testing/recalibration capabilities, and the ability to couple a plurality of accelerometers together in either a daisy chain configuration, or a star configuration.

REFERENCES:
patent: 3269685 (1966-08-01), Wallace
patent: 4477732 (1984-10-01), Mausner
patent: 4649271 (1987-03-01), Ho/ k et al.
patent: 4827091 (1989-05-01), Behr
patent: 4851705 (1989-07-01), Musser et al.
patent: 4958851 (1990-09-01), Behr et al.
patent: 5085464 (1992-02-01), Behr et al.
patent: 5191794 (1993-03-01), Abbink et al.
patent: 5196660 (1993-03-01), Yoshimura et al.

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