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Environmental sensor with tensioned wire exhibiting varying transmission characteristics in response to environmental conditions

  • US 9,182,306 B2
  • Filed: 06/22/2011
  • Issued: 11/10/2015
  • Est. Priority Date: 06/22/2011
  • Status: Active Grant
First Claim
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1. A sensor, comprising:

  • a housing having a first end and a second end;

    a diaphragm proximate the first end and coupled to the housing;

    an attachment plate coupled to the housing such that an interior is defined within the housing and between the diaphragm and the attachment plate;

    transmitting circuitry configured to generate an ultrasonic signal, the ultrasonic signal comprising an ultrasonic mechanical wave; and

    a wire coupled in tension between the attachment plate and the diaphragm such that the wire exhibits a varying ultrasonic signal transmission characteristic as the tension between the attachment plate and the diaphragm changes, the wire coupled to receive the ultrasonic signal generated by the transmitting circuitry for use in measuring an environmental condition based on the varying ultrasonic signal transmission characteristic.

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