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Method of using a computer to collect chemical signals directly

  • US 5,644,501 A
  • Filed: 12/06/1994
  • Issued: 07/01/1997
  • Est. Priority Date: 12/06/1994
  • Status: Expired due to Fees
First Claim
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1. A method of using a computer to collect chemical signals directly from a chemical sensor used in amperometry or conductometry, comprising the steps of:

  • supplying an analog output of the chemical amperometry or conductometry sensor to a current-potential converter and potentiostat circuit in order to transform the analog output of the chemical sensor into a processed analog signal in preparation for analog-to-digital conversion in cooperation with a control program executed by the computer;

    supplying an output of the current-potential converter and potentiostat circuit to an analog-to-digital converter in order to transform the processed analog signal into a digital signal; and

    transferring the digital signal output by the analog-to-digital converter to a computer,wherein the analog-to-digital converter further includes a digital-to-analog converter, and further comprising the steps of transferring digital signals from said computer to the digital-to-analog converter in order to convert the digital signals to analog signals, said supplying the converted digital signals to the potentiostat circuit for use in amperometry, the converted digital signals providing a specific electric potential to the potentiostat circuit to cause the chemical sensor to execute a potentiostat, cyclic voltammetry or square wave voltammetry operation.

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