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Method and system to transmit signals being generated by a measuring sensor, and specifically a temperature sensor

  • US 4,848,923 A
  • Filed: 09/29/1987
  • Issued: 07/18/1989
  • Est. Priority Date: 10/04/1986
  • Status: Expired due to Fees
First Claim
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1. A method of wirelessly transmitting and reading out signals which are being generated in the form of electrical signals by a remote measuring sensor, especially a temperature sensor, comprising the steps ofsubjecting a quartz crystal (2) to a physical parameter;

  • coupling said quartz crystal to an oscillator (3) and generating (5) electrical signals as a sequence of pulses in which gaps between pulses represent a specific measured value of said parameter, especially temperature level;

    providing a time base (20);

    converting the electrical signals into light impulses;

    detecting (21) and evaluating (22), at a location remote from said crystal (2) and oscillator (3), the light impulses with respect to said time base, andindicating or reading out results of said evaluating step.

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