Detection system and method of gas sensor
A gas sensor and detection system technology, applied in the field of sensor detection, can solve the problems of rough accuracy requirements of the detection system, the inability to accurately control the concentration and flow of the detected gas, and the inability to realize the unattended detection of the test gas, so as to achieve a high degree of automation and improve The effect of precision
Pending Publication Date: 2020-08-04
BEIJING MECHANICAL EQUIP INST
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[0003] Gas sensor performance testing is an essential step in the development and production of gas sensors. The existing gas sensor detection system cannot accurately control the concentration and flow of the detected gas. Therefore, the existing detection system can only meet rough accuracy requirements. The test requirements for low-concentration gases cannot be met, and the existing detection system is not highly automated and needs to be operated by a dedicated person. Therefore, it is impossible to realize the unattended detection of toxic, harmful and other dangerous gases in the test gas, and cannot meet the detection requirements of multi-gas environments.
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[0042] The exemplary embodiments will be described in detail here, and examples thereof are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present invention. Rather, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.
[0043] Such as figure 1 As shown, the detection system of the gas sensor of the present invention includes a detection gas source 1, a flow controller 2, a gas mixing chamber 3, a gas concentration monitoring unit 4, an exhaust gas recovery unit 5, a data acquisition detection unit 6, and a steam generator 7; The detection gas source 1, the flow controller 2 and the gas mixing cha...
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The invention discloses a detection system and method of a gas sensor. The detection system comprises a detection gas source, a flow controller, a gas mixing chamber, a gas concentration monitoring unit, a tail gas recovery unit and a data acquisition and detection unit. The detection gas source, the flow controller and the gas mixing chamber are connected through a gas circuit; the gas concentration monitoring unit is used for monitoring the concentration of the mixed gas and respectively controlling the flow of the introduced test gas and buffer gas according to the monitoring result; and the data acquisition and detection unit is used for acquiring detection data of a to-be-detected sensor and detecting the performance of the to-be-detected gas sensor according to the detection data. The proportion of the mixed gas of the test gas and the buffer gas mixed into the gas mixing chamber is accurately regulated and controlled through the flow controller, high-precision mixed gas concentration control is achieved through feedback and gas path regulation under the cooperation of the gas concentration monitoring unit and the flow controller, the automation degree is high, no specially-assigned person is needed for guarding, and the detection precision of the sensor is improved.
Description
Technical field [0001] The invention belongs to the technical field of sensor detection, and in particular relates to a detection system and method of a gas sensor. Background technique [0002] Gas sensors are an important part of the field of sensing technology. Under the constraints of low power consumption, small size and low cost, achieving high sensitivity and rapid response to target gases is an important technology research and development direction for gas sensors. [0003] Gas sensor performance detection is an indispensable step in the development and production of gas sensors. The existing gas sensor detection system cannot accurately control the concentration and flow of the detected gas. Therefore, the existing detection system can only meet the relatively rough accuracy requirements. The test requirements for low-concentration gases cannot be met, and the existing detection systems are not highly automated and require special personnel to operate. Therefore, unattend...
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IPC IPC(8): G01N33/00
CPCG01N33/007G01N33/0073G01N33/0072
Inventor 刘宇航张晨生汪震海许诺
Owner BEIJING MECHANICAL EQUIP INST