Temperature uniformity detection and control method and system of constant temperature heating table

Abstract

The invention discloses a temperature uniformity detection method of a constant temperature heating table, relating to the field of imaging processing. The method comprises the steps of collecting the thermal infrared original image of a constant temperature table, carrying out gray processing on the thermal infrared original image, and dividing the image into multiple heating areas, and a step of counting and collecting the image gray change information, obtaining a pixel gray fluctuation value, and correcting the heating power of a heating piece if the fluctuation value is larger than a set threshold. In addition, the invention also discloses a temperature uniformity detection system of a constant temperature heating table. Through collecting the table surface thermal infrared original image of the constant temperature heating table and carrying out image processing, the uniformity degree of the constant temperature heating table can be rapidly obtained, the temperature drift of measurement with the use of a traditional temperature sensor is avoided, and the detection precision is improved. In addition, a heating piece correction coefficient is obtained according to the image gray, and the heating piece heating power is controlled so as to achieve the purpose of the uniform temperature of each area of the constant temperature heating table.

Description

technical field [0001] The invention relates to the field of constant temperature heating table equipment, in particular to a method and system for detecting temperature uniformity of a constant temperature heating table. Background technique [0002] The constant temperature heating table can improve a simple and relatively constant temperature environment, and is widely used in many fields. For example, medical experiments, chemical experiments, chemical production, etc. [0003] Most of the existing constant temperature heating tables are resistive constant temperature heating tables, and the temperature control accuracy is still insufficient. For a constant temperature heating table with a large heating area, uneven heating often occurs in various areas, and uneven temperature distribution will affect medical experiments, chemical experiments, and chemical production. At the same time, the existing technology has little research on the uniformity detection of the const...

AI Technical Summary

Problems solved by technology

For a constant temperature heating table with a large heating area, uneven heating often occurs in each area, and uneven temperature distribution will affect medical experiments, chemical experiments, chemical production, etc.

At the same time, the existing technology has little research on the uniformity detection of the constant temperature heating table. Generally, the temperature sensor is used to collect the problems in each area, and the measured value of the temperature sensor is easily affected by the ambient temperature and causes temperature drift, which affects the detection accuracy and precision.

Therefore, it is not suitable to use temperature sensors to detect the uniformity of each area in the field of constant temperature heating table

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