A method and apparatus for sensing impact between a vehicle...

Details A method and apparatus for sensing impact between a vehicle... A method and apparatus for sensing impact between a vehicle...

B - Operations, Transporting

60

R

B60R 21/01 (2006.01)

Patent

CA 2424708

The invention relates to the apparatus for and a method of sensing impact between a vehicle and an object and particularly between a pedestrian and the front bumper of a vehicle. An optical fiber array extends along the bumper and the array has sensors spaced along the bumper. A sensor comprises light loss areas spaced peripherally and axially on a fiber. An impact distorts the sensors, modulating light transmitted along the fiber or fibers. A signal is produced which is processed by a signal processor and an output signal generated. The output signal is used to actuate a safety device, such as elevating the vehicle hood to increase clearance between hood and engine, to reduce the severity of any injuries.

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