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Gas sensor accuracy compensation method and device based on cloud computing

A gas sensor, precision compensation technology, applied in standard gas analyzers, measuring devices, analyzing gas mixtures, etc., can solve the problem of low measurement accuracy of gas sensors, and achieve the effect of reducing the decline in measurement accuracy

Active Publication Date: 2018-01-02
SHENZHEN OURUIBO ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the current gas sensor measurement accuracy is not high

Method used

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  • Gas sensor accuracy compensation method and device based on cloud computing
  • Gas sensor accuracy compensation method and device based on cloud computing
  • Gas sensor accuracy compensation method and device based on cloud computing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] see figure 1 , figure 1 It is a schematic flow chart of a gas sensor accuracy compensation method based on cloud computing provided in Embodiment 1 of the present invention, including the following steps:

[0021] Step S1, store the output value of the gas sensor and the corresponding environmental parameters and measurement time in the cloud, the environmental parameters include temperature and / or humidity.

[0022] Specifically, the gas sensor is provided with a wireless communication module for networking with a cloud server through gateways, routers, modems and other devices, so as to send all output values ​​to the cloud. At the same time, the environmental parameters related to each output value and the total measurement time are also sent to the cloud.

[0023] Environmental parameters mainly include temperature and / or humidity, both of which have a greater impact on the measurement results of the gas sensor.

[0024] The target gas of the gas sensor can be ha...

Embodiment 2

[0038] see figure 2 , figure 2 A schematic diagram of the precision compensation method provided in Example 2. Compared with embodiment 1, the method provided by embodiment 2 further includes:

[0039] Step S4 , correcting the preset environmental weighted attenuation coefficient Kb of the gas sensor according to the stored cumulative value of the environmental parameter to obtain the cumulative environmental drift coefficient Komn_envi of the gas sensor.

[0040] Kb is the environmental weighted attenuation coefficient of the gas sensor, which can be determined by the manufacturer.

[0041] When the temperature and / or humidity sensing module of the gas sensor can transmit the environmental parameters by itself, the environment weighted attenuation coefficient Kb of the gas sensor can be corrected according to the environmental parameters accumulated and stored in the previous step S1.

[0042] refer to image 3 , image 3 Is the gas sensor environment weighted attenuat...

Embodiment 3

[0071] refer to Figure 4 , Figure 4 It is a schematic structural diagram of a gas sensor accuracy compensation device 100 based on cloud computing provided by Embodiment 3 of the present invention, which includes: a storage module 20 , a first correction module 31 and a first compensation module 41 .

[0072] The storage module 20 is used to store the output value of the gas sensor and the corresponding environmental parameters and measurement time in the cloud, the environmental parameters include temperature and / or humidity.

[0073] The first correction module 31 is used to correct the preset long-term attenuation coefficient Ka of the gas sensor according to the accumulated value of the stored output value to obtain the cumulative measurement drift coefficient Komn_gas of the gas sensor.

[0074] The first compensation module 41 is configured to perform compensation calculation on the current output value of the gas sensor according to the accumulated measurement drift ...

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Abstract

The present invention provides a gas sensor accuracy compensation method based on cloud computing, which includes the following steps: storing the output value of the gas sensor and the corresponding environmental parameters and measurement time in the cloud, where the environmental parameters include temperature and / or humidity; according to The stored accumulated value of the output value corrects the preset long-term attenuation coefficient Ka of the gas sensor to obtain the accumulated measured drift coefficient Komn_gas of the gas sensor; and the calculated drift coefficient of the gas sensor is calculated based on the accumulated measured drift coefficient Komn_gas. The current output value is subjected to a compensation operation to obtain the compensated output value. The invention also provides a corresponding accuracy compensation device. The accuracy compensation method and device of the gas sensor provided by the present invention can effectively improve the measurement accuracy of the sensor and reduce the decrease in measurement accuracy caused by sensor aging.

Description

technical field [0001] The invention relates to a gas sensor, in particular to a cloud computing-based gas sensor accuracy compensation method and device. Background technique [0002] At present, there are two main types of gas sensors: semiconductor type and electrochemical type. [0003] Semiconductor sensors have poor accuracy and poor consistency, and can only be used for rough qualitative measurement and alarm. The initial accuracy and consistency of the electrochemical sensor are very good, but due to the working principle of the electrochemical sensor and the influence of the environment, the measurement accuracy and precision will deteriorate with the use of time, so the current carbon monoxide sensor standard The service life is said to be 2 to 5 years. Even within the rated life cycle, the measurement accuracy will have a large deviation. Lead to accidents such as false alarms or failure to alarm in dangerous situations. [0004] Currently on the market based o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/00
CPCG01N33/0006G01N33/0062G01N33/0068
Inventor 刘玉林袁宇彬
Owner SHENZHEN OURUIBO ELECTRONICS