Measuring speaker cone deflection using triangulation sensors

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A major car audio speaker manufacturer contacted Acuity to help solve a challenging measurement application.  The company's Research and Development Department chose the AR200 laser measurement sensor to measure the positional changes of a subwoofer cone. 

Application requirements

Fast-moving targets demand a laser sensor with a fast sampling speeds.  As the sales engineer in the video explains, the sensor must have a fast frequency response to profile the entire amplitude of cone movement which is moving at 60 Hz. The engineer required an analog output whose resolution was as good as that of the measurement resolution Finally, the speaker manufacturer needed a laser sensor with performance that would not suffer when measuring to a black target.  The AR200 with its CMOS detector array performs well on light and dark targets alike.

Tags: deflectionfrequencylasersensorspeakersubwoofer

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