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Cloud computing-based gas sensor precision compensating method and device

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

Active Publication Date: 2016-10-26
SHENZHEN OURUIBO ELECTRONICS
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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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  • Cloud computing-based gas sensor precision compensating method and device
  • Cloud computing-based gas sensor precision compensating method and device
  • Cloud computing-based gas sensor precision compensating method and device

Examples

Experimental program
Comparison scheme
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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 accumulated value of the stored environmental parameters 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 attenua...

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 for correcting 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 used to perform compensation calculation on the current output value of the gas sensor according to the accumulated measurement drift co...

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Abstract

The invention provides a cloud computing-based gas sensor precision compensating method, comprising the following steps: storing at cloud, an output value of a gas sensor and corresponding ambient parameters and measurement time, the ambient parameters including temperature and / or humidity; according to an accumulative value of the stored output value, correcting preset long-time attenuation coefficient Ka of the gas sensor to obtain accumulative measurement drift coefficient Komn-gas of the gas sensor; according to the accumulative measurement drift coefficient Komn-gas, compensatively calculating a current output value of the gas sensor to obtain a compensated output value. The invention also provides a corresponding precision compensating device. The gas sensor precision compensating method and device provided herein enable the measurement precision of a sensor to be effectively improved and the reduction in the measurement precision due to sensor aging to be reduced.

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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IPC IPC(8): G01N33/00
CPCG01N33/0006G01N33/0062G01N33/0068
Inventor 刘玉林袁宇彬
Owner SHENZHEN OURUIBO ELECTRONICS
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