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Temperature and humidity data drift compensation circuit and gas detector

A data drift and compensation circuit technology, which is applied in the analysis of gas mixtures, instruments, measuring devices, etc., can solve the problems of not easy to carry, large volume, high energy consumption, etc., and achieve the effect of strong practicability, small volume and low price

Pending Publication Date: 2021-05-14
深圳市安帕尔科技有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0010] The purpose of the present invention is to provide a circuit for solving temperature drift, aiming to solve the problems of high cost, large volume, high energy consumption and difficult portability of the circuit in the prior art

Method used

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  • Temperature and humidity data drift compensation circuit and gas detector
  • Temperature and humidity data drift compensation circuit and gas detector
  • Temperature and humidity data drift compensation circuit and gas detector

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Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention clearer, the following in conjunction with the attached figure 1 And embodiment, the present invention is described in further detail. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0025] See figure 1 , figure 2 , image 3 and Figure 4 The temperature data drift compensation circuit provided by the present invention includes a temperature sensor circuit 1 and / or a humidity sensor circuit 3, a gas sensor circuit 2, a DSP data processing circuit 4 and an output and display circuit 5, and the temperature sensor circuit 1 and / or The humidity sensor circuit 3 and the gas sensor circuit 2 are connected to the input end of the DSP data processing circuit 4 , and the output and display circuit 5 is connected to the output end of the DSP data processing circuit 4 .

[0026] The ...

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Abstract

The invention relates to a temperature and humidity data drift compensation circuit and a gas detector, the compensation circuit comprises a temperature / humidity sensor circuit, a gas sensor circuit, a DSP data processing circuit and an output and display circuit, the temperature / humidity sensor circuit and the gas sensor circuit are connected with the input end of the DSP data processing circuit. And the output and display circuit is connected with the output end of the DSP data processing circuit. The temperature and humidity data drift compensation circuit is simple, practical, reliable and high in practicability.

Description

technical field [0001] The invention relates to the technical field of gas detection, in particular to a temperature and humidity data drift compensation circuit and a gas detector. Background technique [0002] Toxic, harmful, flammable and explosive gas detection equipment is a precision instrument and equipment. Its detection head is a high-precision electrochemical semiconductor component. On the semiconductor silicon wafer, a chemical coating sensitive to the measured gas After the chemical coating reacts with the gas, a proportional electrical signal will be output on the silicon wafer. This method can accurately measure the concentration and ratio of various useful and harmful gases in the air, and its accuracy can be accurate to within 0.2 PPM. However, this method is sensitive to temperature changes in the environment. As the ambient temperature increases, its chemical reaction will be relatively strong. Under the premise that the concentration of the gas to be m...

Claims

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Application Information

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IPC IPC(8): G01N33/00
CPCG01N33/0004
Inventor 李春林赵唐铭江焕平李辉
Owner 深圳市安帕尔科技有限公司
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