Control method of gas type sensor

A control method and sensor technology, applied in the field of sensors, can solve problems such as easy drift and low reliability of detection results, and achieve the effects of accurate and effective detection results, improved reliability, and improved accuracy

Active Publication Date: 2017-07-07
HANGZHOU ROBAM APPLIANCES CO LTD
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Problems solved by technology

Although this type of sensor is very sensitive to air pollution, its reference value is prone to drift in the working environment, resulting in low reliability of the detection results

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  • Control method of gas type sensor

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Embodiment Construction

[0019] The present invention will be described in detail below in conjunction with the drawings:

[0020] Such as figure 1 As shown, the control method of this kind of gas sensor uses technical solutions to solve technical problems including: (1) data processing system, (2) gas detection sensor, (3) control algorithm, (4) target device. The gas detection sensor (2) generally selects a semiconductor oxidation-reduction reaction sensor. The gas detection sensor (2) detects the target in real time, and at the same time transmits the relevant feedback voltage signal to the data processing system (1). The processing system (1) processes the data through the control algorithm (3), and finally obtains valid data and outputs it to the target device (4). The response judgment method of the target device is the size of the reference value, the reference value is equal to the actual measurement value of the gas detection sensor minus the reference value; the control algorithm continuously u...

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Abstract

The invention discloses a control method of a gas type sensor. A system comprises a data processing system, the gas type detection sensor, a control algorithm and an object device; the gas type detection sensor detects a detected object in real time, and transmits a related feedback voltage signal to the data processing system; the data processing system processes data via the control algorithm, obtains effective data, and outputs the effective data to the object device; the object device takes a reference value as a response determining method, and the reference value is obtained by subtracting a benchmark value from a practical measurement value of the gas type detection sensor; and the benchmark value of the gas type detection sensor is updated continuously in the control algorithm, and the difference between the measurement value and the benchmark value is determined to measure the gas concentration. The control method has the advantages that the precision of the benchmark value is improved, an error caused by drift of the benchmark value is avoided effectively, a detection result is more accurate and effectively, and the credibility of a detection result is improved.

Description

Technical field [0001] The invention relates to the field of sensors, and is mainly a control method for gas sensors. Background technique [0002] With the improvement of living conditions, gas pollution has become more and more serious, so a variety of gas sensors have emerged to detect pollution in the air, such as: combustible gas, harmful gas, organic gas, etc. Most of these sensors use the concentration of gas to judge whether they meet the criteria, and their materials are mostly semiconductors, and their principle is mainly the oxidation-reduction reaction of Huaxie. Although this type of sensor is very sensitive to air pollution, its reference value is prone to drift in the working environment, resulting in low reliability of its detection results. Summary of the invention [0003] The purpose of the present invention is to overcome the shortcomings of the prior art, and provide a gas sensor control method, which can effectively avoid errors caused by reference drift, th...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/04G01N27/12
CPCG01N27/12G05B19/04
Inventor 任富佳鲁登科陈晓伟
Owner HANGZHOU ROBAM APPLIANCES CO LTD
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