Gas field center carbon monoxide concentration measuring method

Abstract

The invention belongs to the field of gas concentration measurement, and particularly relates to a gas field center carbon monoxide concentration measurement method. Comprising the following steps: (1) constructing a carbon monoxide generation model based on a preparation method to obtain a carbon monoxide concentration-time relationship in a production process; (2) on the basis of the carbon monoxide generation model constructed in the step (1), processing a measurement value of an electrochemical sensor for measuring the concentration of carbon monoxide at the edge of a gas mass, and screening and abandoning an abnormal value; and (3) establishing a carbon monoxide state transition model from the edge concentration to the center concentration, and calculating the carbon monoxide concentration of the center of the air mass according to the measurement data of the sensor processed in the step (2) by adopting a measurement method based on Kalman filtering. The sensing error caused by inaccurate measurement due to the fact that the sensor cannot be arranged at the center of a gas field can be greatly reduced, and the running safety and stability of the carbon monoxide gas generating device are improved.

Description

technical field [0001] The invention belongs to the field of gas concentration measurement, in particular to a method for measuring carbon monoxide concentration in the center of a gas field. Background technique [0002] During the preparation of carbon monoxide gas, a concentrated gas field will be generated, and the sensor cannot be suspended in the center of the gas field but placed on the edge, so the carbon monoxide concentration at the edge of the gas field is measured, and the central concentration cannot be directly measured. The large-range electrochemical carbon monoxide sensor used has errors during use, and outliers may appear. The existence of this problem will increase the difficulty in the preparation of carbon monoxide gas, affect the service life of the gas preparation equipment, and lead to potential safety hazards. The concentration of carbon monoxide in the center of the gas field is of great significance in the process of gas preparation [0003] In t...

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Problems solved by technology

[0003] In the existing technology, there is a lack of a method that is applied to the preparation of carbon monoxide gas to solve the problem that the sensor cannot directly and accurately obtain the concentration of the center of the gas field

Data filtering is a data processing technology that can restore the real situation of data in noisy data. The most widely used Kalman filter is suitable for dynamic systems and can update and process the data collected on site in real time. However, the system will Severe distortion under the influence of outliers, unable to solve the outlier problem

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