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Transducer memory circuit

  • US 4,611,304 A
  • Filed: 07/27/1983
  • Issued: 09/09/1986
  • Est. Priority Date: 07/27/1983
  • Status: Expired due to Fees
First Claim
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1. A memory circuit for use with an accelerometer connected to a control system wherein the accelerometer is configured to transmit an output signal representing a physical quality measured by the accelerometer to the control system, said accelerometer including a proof mass supported on a pendulum by means of a hinge, the memory circuit comprising:

  • means for securing said memory circuit to the accelerometer;

    a memory for storing data representing characteristics of the accelerometer including identity, pendulum axis alignment data, hinge axis alignment data, scale factor data and bias data, said data being stored in said memory in the form of polynominal coefficients;

    access means, connected to said memory, for selectively accessing predetermined elements of said characteristic data, said access means including a control circuit connected to the control system and a counter connected to said memory and said control circuit to access said predetermined elements in said memory in response to a control signal from said control circuit;

    transmission means, connected to said access means, for transmitting said predetermined elements of characteristic data to the control system, said transmission means including means for transmitting temperature data from a temperature sensor in said the accelerometer to the control system and including a multiplexer circuit for transmitting said characteristic data and said temperature data to the control system; and

    indicator means, responsive to a fault signal from the control system, for producing a visible indication on the accelerometer of a fault in the accelerometer in the event that said predetermined elements fail to be transmitted to said control system in response to said access means.

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