Automatic calibration method and device for infrared temperature measurement equipment

Abstract

The invention provides an automatic calibration method and device for infrared temperature measurement equipment. The automatic calibration method comprises the following steps: an environment temperature calibration step and a target temperature calibration step. The environment temperature calibration step comprises the steps of placing the infrared temperature measurement equipment in a constant-temperature environment, automatically obtaining the actual temperature of the constant-temperature environment, and calibrating the constant-temperature environment temperature measured by the infrared temperature measurement equipment. The target temperature calibration step comprises the steps of placing the infrared temperature measurement equipment in a black body for temperature measurement calibration, automatically obtaining the actual temperature of the black body target, and calibrating the temperature of the black body target measured by the infrared temperature measurement equipment. The invention further provides the automatic calibration device using the method. The automatic calibration device comprises an environment temperature automatic calibration device and a target temperature automatic calibration device. According to the automatic calibration method and device, automatic calibration can be carried out on the infrared temperature measurement equipment, generation of calibration deviation is effectively avoided, the measurement precision of the equipment is improved, the calibration efficiency is high, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of temperature measurement, in particular to an automatic calibration method and device for infrared temperature measurement equipment. Background technique [0002] A thermopile is a pyrolytic infrared sensor, which is a device composed of thermocouples. It consists of two or more thermocouples connected in series, and the thermoelectric potentials output by each thermocouple are superimposed on each other. [0003] Thermopile infrared temperature measurement principle: The absorption film irradiated by infrared rays is a thin film with small heat capacity and easy temperature rise. There is a hollow structure in the lower part close to the center of the liner, and the design of this structure ensures the temperature difference between the cold end and the temperature measuring end. The thermocouple is composed of polysilicon and aluminum connected in series. When the temperature of each thermocouple tem...

AI Technical Summary

Problems solved by technology

If the cost is increased, the deviation value can be reduced by using higher-precision equipment, but under this accuracy requirement, the cost will at least double for every 0.01°C increase in the theoretical deviation value, and the increase in precision will lead to an increase in cost far greater than the increase in precision. Therefore, it is not advisable to reduce the deviation value by adopting higher precision equipment

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