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Self-correcting chemical sensor

  • US 9,857,243 B2
  • Filed: 03/17/2015
  • Issued: 01/02/2018
  • Est. Priority Date: 03/18/2014
  • Status: Active Grant
First Claim
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1. A device comprising:

  • a) an array of resonant sensors having varied frequency responses to N environmental parameters and M chemical parameters, wherein N is an integer greater than or equal to 2, M is an integer greater than or equal to 1, and at least (N+M) of the sensors have different, non-zero frequency responses to at least two of the parameters;

    b) at least one detector for detecting frequency responses of the resonant sensors; and

    c) at least one processor in communication with the detector for receiving signals or data representative of the frequency responses, wherein the processor is programmed to determine individual parameter values for each of the chemical parameters according to the detected frequency responses and a system of equations using at least one matrix of calibration terms that relate the detected frequency responses to the individual parameter values, wherein each of the individual parameter values is calculated using the frequency responses of at least two of the resonant sensors, and the matrix has at least (N+M) rows, at least (N+M) columns, and off-diagonal elements with non-zero values.

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