Environment compensation model-based detection error correction method for oxygen in glass bottle

Abstract

The invention discloses an environment compensation model-based detection error correction method for oxygen in a glass bottle. The method comprises the following steps of 1, acquiring residual oxygencontent detection sample data in the glass bottle, the data including a second harmonic characteristic value, an environment factor variable and a reference correction value, 2, establishing an environment impact compensation model based on PSO-OS-ELM, and verifying the environment impact compensation model through test sample data, and 3, correcting the residual oxygen content detection error inthe glass bottle based on the environment compensation model in the step 2. Accurate prediction of the detection result error influenced by environment factors is realized, the detection result is compensated, and the detection precision of the residual oxygen content in the glass bottle is improved.

Description

technical field [0001] The invention belongs to the technical field of gas detection, and in particular relates to an error correction method for oxygen detection in a glass bottle based on an environmental compensation model. Background technique [0002] In the pharmaceutical industry, international companies have applied wavelength modulation spectroscopy (WMS) technology to the on-line detection of oxygen concentration in sealed glass medicine bottles, such as LIGHTHOUSE in the United States, Bevti in Italy, and China’s National Hui Optoelectronics Technology, etc. However, the second harmonic signal extracted by WMS technology will be affected by on-site environmental factors under an open single optical path, resulting in a decrease in the accuracy and stability of concentration measurement. [0003] At present, in the field of measuring the oxygen concentration in the sealed glass medicine bottle, there are no relevant reports at home and abroad on the research on th...

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Problems solved by technology

However, the second harmonic signal extracted by WMS technology will be affected by on-site environmental factors under an open single optical path, resulting in a decrease in the accuracy and stability of concentration measurement

[0003] At present, in the field of measurement of oxygen concentration in sealed glass medicine bottles, there are no relevant reports at home and abroad on the research on the correction method of the error caused by the detection signal affected by environmental factors

The technical methods disclosed by companies such as LIGHTHOUSE and Beveti need to add standard bottles at intervals on the pharmaceutical production line to detect the background noise on the production line so as to achieve noise subtraction. However, the additional standard bottles reduce the production capacity of the production line, and the previously acquired There is a difference between the background noise and the background noise of the currently tested bottle due to the time difference

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