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Complex environment test and calibration device, system and method for gas sensor

A gas sensor and complex environment technology, applied in the field of calibration, can solve problems such as large differences

Pending Publication Date: 2021-11-23
成都优蕊光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, most gas concentration sensors are susceptible to the influence of air pressure and temperature, resulting in a large difference between the read gas concentration value and the actual value. In practical applications, there are various complex environments, such as equatorial high temperature and polar low temperature. , high-altitude mountains, low-altitude basins, etc., in order to ensure the accuracy of the gas concentration sensor in practical applications, we need to create a similar environment in the laboratory in advance to calibrate the gas concentration sensor

Method used

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  • Complex environment test and calibration device, system and method for gas sensor
  • Complex environment test and calibration device, system and method for gas sensor
  • Complex environment test and calibration device, system and method for gas sensor

Examples

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Effect test

Embodiment 1

[0029] Such as figure 1 , the present embodiment proposes a complex environment testing and calibration device for a gas sensor, including a stainless steel cylinder 4, a stainless steel cylinder head 2, a vacuum pressure gauge 6, an aviation plug 5 and two air valves, wherein the stainless steel cylinder head 2 passes through The screw 1 connects the stainless steel cylinder 4, and the standard hole connected with the external equipment is set on the stainless steel cylinder 4, and the standard hole includes the first standard hole, the second standard hole, the third standard hole 7 and the fourth standard hole 8, so The aviation plug 5 is installed in the first standard hole, the vacuum pressure gauge 6 is installed in the second standard hole, and the two air valves are installed in the third standard hole 7 and the fourth standard hole 8 respectively.

[0030] Further, the stainless steel cylinder head 2 is provided with an observation window.

[0031] Further, the stain...

Embodiment 2

[0040] On the basis of Embodiment 1, this embodiment further proposes a complex environment testing and calibration system for gas sensors, such as figure 2, including a complex environment testing and calibration device for a gas sensor, standard gas equipment, a control system and a vacuum pump equipment as described above, wherein the standard gas equipment is connected to a complex environment testing and calibration of a gas sensor through an inflatable channel Calibration device, the vacuum air pump equipment is connected to a complex environment test and calibration device of a gas sensor through an exhaust channel, the control system is connected to a complex environment test and calibration device of a gas sensor through a circuit channel, the gas charging channel and The exhaust channels are respectively connected to two gas valves provided on a complex environment testing and calibration device of a gas sensor, and the circuit channel is connected to an aviation plu...

Embodiment 3

[0044] On the basis of Embodiment 1, this embodiment further proposes a complex environment testing and calibration method for gas sensors, such as image 3 , including the following steps:

[0045] S1. Place the gas sensor and signal processing circuit in the stainless steel cylinder 4, and connect it to the control system through the circuit channel connecting the aviation plug 5, and connect the refrigeration device, heating device, and temperature sensor to the control system through the circuit channel, Then the stainless steel cylinder 4 is sealed by the stainless steel cylinder head 2;

[0046] S2. Open the air valve connected to the exhaust passage, and exhaust the stainless steel cylinder 4 through the vacuum pump. When the vacuum pressure gauge 6 reaches about -0.1mpa, close the air valve of the exhaust passage. At this time, the inside of the container can be considered to be in a vacuum state ;

[0047] S3. Open the air valve connected to the inflatable channel, ...

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Abstract

The invention discloses a complex environment test and calibration device, system and method for a gas sensor. According to the invention, through the design of the complex environment test and calibration device for the gas sensor, the effect that a single device has multiple functions is achieved, and the device can create gas environments with different concentrations for the gas sensor and create gas environments with the same concentration, different air pressures and different temperatures, concentration data transmitted back by the gas sensor in various complex environments can be simply and conveniently calibrated and tested through the design of the gas sensor complex environment test and calibration method, and the labor time of test personnel is saved. Different temperatures and different concentrations under the same air pressure condition are calibrated firstly, then inflation is started from low air pressure, repeated inflation and exhaust of the container are avoided, and standard gas is saved.

Description

technical field [0001] The invention relates to the field of calibration methods, in particular to a device, system and method for complex environment testing and calibration of gas sensors. Background technique [0002] Gas concentration sensors are widely used in both civil and military fields. For example, in museums, gas concentration sensors are used to monitor the gas environment of some high-value collections in real time, and specific gas conditions can be provided for protection as required; Toxic and harmful gases, the use of gas concentration sensors to monitor the concentration of toxic gases can effectively reduce the incidence of accidents; the use of high-sensitivity gas concentration sensors in the battlefield to monitor the distribution of gas concentration on the battlefield can track and reconnaissance military vehicles. However, at present, most gas concentration sensors are susceptible to the influence of air pressure and temperature, resulting in a larg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00
CPCG01N33/0006G01N33/0004
Inventor 郝昕赖正刚赵泽彬曾祥全
Owner 成都优蕊光电科技有限公司
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