Self-Correcting Chemical Sensor

摘要

An array of resonant sensors self-corrects measured values for the effects of environmental conditions, such as operating temperature, pressure or humidity. The resonant sensors have varied frequency responses to N environmental parameters and M chemical parameters. Each of the sensors has a different, non-zero frequency response to at least two of the parameters. The device also comprises at least one detector for detecting frequency responses of the resonant sensors. Individual parameter values are determined for each of the N environmental parameters and M chemical parameters according to the detected frequency responses and a system of equations using calibration terms that relate the frequency responses to the individual parameter values.

主权项

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 each of the sensors has a different, non-zero frequency response to at least two of the parameters; b) detection means for detecting frequency responses of the resonant sensors; and c) at least one processor in communication with the detection means for receiving signals or data representative of the frequency responses, wherein the processor is programmed to determine individual parameter values for each of the N environmental parameters and M chemical parameters according to the detected frequency responses and a system of equations using 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.