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Electrochemical gas sensor, calibration method thereof, and air conditioner

A technology of gas sensor, calibration method, applied in the field of sensing

Active Publication Date: 2017-12-19
GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The main purpose of the present invention is to provide a calibration method for electrochemical gas sensors, aiming at solving the technical problem of zero point drift of the above electrochemical gas sensors and improving the detection accuracy of electrochemical gas sensors

Method used

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  • Electrochemical gas sensor, calibration method thereof, and air conditioner
  • Electrochemical gas sensor, calibration method thereof, and air conditioner
  • Electrochemical gas sensor, calibration method thereof, and air conditioner

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Embodiment Construction

[0045] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0046] The main solution of the embodiment of the present invention is: when calibrating the electrochemical gas sensor, by closing the measurement box, the gas with a limited concentration in the measurement box undergoes a chemical reaction in a closed environment until the gas concentration is reduced to close to zero or zero, At this point, the actual value of the gas concentration in the measurement box is known, and the gas concentration reference value of the electrochemical gas sensor is updated according to the gas concentration detection value in the measurement box obtained, wherein the gas concentration reference value refers to the gas concentration corresponding to The detection value of the gas concentration at zero time is used to solve the problem of the decrease of detection accuracy caused by the zer...

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Abstract

The invention discloses a calibration method of an electrochemical gas sensor. The calibration method of the electrochemical gas sensor includes the following steps: S100, turning off a measurement box for the electrochemical gas sensor when receiving an instruction for calibrating the electrochemical gas sensor; S200, acquiring the gas concentration detection value in the measurement box; and S300, updating the gas concentration reference value of the electrochemical gas sensor according to the gas concentration detection value. The invention also discloses the electrochemical gas sensor and an air conditioner. The calibration method can improve the detection accuracy of the electrochemical gas sensor.

Description

technical field [0001] The invention relates to the field of sensor technology, in particular to an electrochemical gas sensor, a calibration method thereof, and an air conditioner. Background technique [0002] The electrochemical gas sensor is a sensor that estimates the concentration of the gas to be measured according to the change of the oxidation or reduction current generated at the electrode by the chemical reaction of the gas to be measured. During the operation of the electrochemical gas sensor, its performance will decay with the increase of time and detection amount, resulting in the phenomenon of zero drift. That is to say, due to the change in the performance of the electrochemical gas sensor, the gas concentration detection value corresponding to the actual value of the gas concentration being zero, that is, the gas concentration reference value changes. If the gas concentration reference value is not updated according to the performance change of the electro...

Claims

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Application Information

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IPC IPC(8): G01N27/416
CPCG01N27/4163
Inventor 周宏明刘超英
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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