Patent ID: 7409863
Filing Date: 2008-08-12
Classification: G01F,G01L

Abstract:
1. A pressure sensor comprising: a housing; an optical transmitter carried by the housing, the optical transmitter operable for emitting light; at least two optical receivers carried by the housing for receiving light emitted from the optical transmitter; a light beam modifier carried by the housing and responsive to pressure changes thereon for modifying the light received by each of the at least two optical receivers, wherein the light beam modifier comprises a barrier positioned in an optical path of the light beam, the barrier having a light transmitting portion therein for allowing a portion of the light emitted from the optical transmitter to be received by each of the at least two optical receivers, wherein the barrier is movably responsive to the pressure changes on the housing for movement of the light transmission portion, and thus an amount of light received by each of the at least two optical receivers; and a processor operable for receiving an output signal from each of the optical receivers and providing a pressure measurement responsive to the light modifying.