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Automatic gas sensor calibration system and gas sensor calibration method thereof

A gas sensor and automatic calibration technology, which is applied in the direction of instruments, scientific instruments, measuring devices, etc., can solve the problems of complex equipment and high calibration cost, and achieve the effect of low cost, convenient calibration, and low calibration environment requirements

Active Publication Date: 2013-11-20
HENAN HANWEI ELECTRONICS
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Problems solved by technology

[0003] The object of the present invention is an automatic calibration system for gas sensors to solve the problems of complex equipment and high calibration costs in existing calibration systems. The present invention also relates to a calibration method for gas sensors

Method used

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  • Automatic gas sensor calibration system and gas sensor calibration method thereof

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Embodiment Construction

[0020] The technical solutions of the present invention will be described in further detail below through specific implementation methods.

[0021] An embodiment of a gas sensor automatic calibration system, such as figure 1 As shown, it includes multiple sensor aging kits with communication conversion modules. The specific number depends on the test needs, such as 10, 100, etc., so that multiple gas sensors can be calibrated at one time. It also includes a microprocessor with timing function The gas concentration sampling input terminal of the microprocessor circuit is connected to the output terminal of the high-precision gas sensor; the communication conversion module has an input terminal and an output terminal for communicating with the gas sensor to be calibrated, and the microprocessor circuit The calibration signal output end of the detector circuit is connected to the input end of the communication conversion module, and the high-precision gas sensor is CO 2 The gas ...

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Abstract

The invention provides an automatic gas sensor calibration system. The automatic gas sensor calibration system comprises at least one sensor aging tool provided with a communication conversion module, and further comprises a microprocessor circuit and a high-precision gas sensor, wherein a gas concentration sampling input end of the microprocessor circuit is connected with the output end of the high-precision gas sensor; the communication conversion module is provided with an input end and an output end communicated with a gas sensor to be calibrated; a calibration signal output end of the microprocessor circuit is connected with the input end of the communication conversion module. The invention further relates to a gas sensor calibration method. When the automatic gas sensor calibration system provided by the invention is used, a precise gas distribution system is not used any more, so that the structure is simple, the construction cost is low and the calibration is convenient.

Description

technical field [0001] The invention relates to a gas sensor automatic calibration system, and also relates to a gas sensor calibration method. Background technique [0002] The sensor production process is roughly as follows: sensor production, sensor aging, sensor calibration, and calibration before leaving the factory. The existing gas sensor calibration system includes a sensor aging tool, a computer, a gas distribution device, and a ventilation tool. The computer is respectively connected to the gas distribution device and the sensor aging tool for control. The communication conversion module that communicates with the gas sensor to be calibrated, the sensor aging tool is equipped with a gas sensor installation position; when calibrating, the gas sensor is installed on the sensor aging tool, the gas sensor is connected to the computer through the communication conversion module, and the sampling of the gas sensor The terminal is connected to the ventilation tooling, an...

Claims

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Application Information

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IPC IPC(8): G01N33/00
Inventor 祁泽刚冯辉赵云祥张军亭朱天宏王书潜
Owner HENAN HANWEI ELECTRONICS
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