Velocity change sensor with magnetic field concentrator and...

Details Velocity change sensor with magnetic field concentrator and... Velocity change sensor with magnetic field concentrator and...

G - Physics

05

B

342/16, 340/148.

G05B 11/01 (2006.01) G01P 15/135 (2006.01) H01H 35/14 (2006.01)

Patent

CA 2026919

An accelerometer for sensing velocity changes particularly suited for passenger restraint systems in a motor vehicle for the deployment of an air bag includes a housing with a magnetic closing element. The magnetic closing element includes a permanent magnet which generates a field around the sensor housing. A restricting element is mounted around the magnet for restricting and concentrating the magnetic field around the sensor. In an alternate embodiment, two similar sensors may be housed in a single enclosure for additional sensitivity. The restrictive elements of the sensors eliminate interference between the sensor magnetic fields.

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