Accelerometer with optical switch
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United States of America Patent
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-
Mar 5, 1996
Grant Date -
N/A
app pub date -
Mar 11, 1994
filing date -
Mar 11, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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