Non-contact wide-temperature-difference infrared temperature measurement method

Abstract

The invention belongs to the technical field of temperature measurement, and particularly relates to a non-contact wide-temperature-difference infrared temperature measurement method, which comprisesthe following steps of: setting a measurement system, and arranging a black body, a detector, an imager and an optical window in an incubator; configuring the detector according to the temperature measurement range; changing the temperature of the black body at different environment temperatures, finding out the relation between gray scale output of the imager and the temperature of the focal plane at the same temperature of the black body, and obtaining a gray scale-focal plane temperature fitting curve; during actual temperature measurement, according to the current focal plane temperature,substituting the current focal plane temperature into the gray-focal plane temperature fitting curve to obtain to-be-fitted gray output corresponding to different black body temperatures; and fittinga gray-temperature curve in real time according to the plurality of to-be-fitted gray output and the calibration blackbody temperature, and substituting the current pixel gray into the curve to obtainfinal temperature measurement temperature output. The method is high in temperature measurement speed and high in sensitivity, the response speed of an infrared thermometer to the temperature is very high, and real-time and rapid tracking measurement can be carried out.

Description

technical field [0001] The invention belongs to the technical field of temperature measurement, and in particular relates to a non-contact wide temperature difference infrared temperature measurement method. Background technique [0002] In recent years, products related to non-contact temperature measurement have been favored by everyone in the market, but non-contact temperature measurement products on the market are easily affected by the following aspects, resulting in inaccurate measurement accuracy: (1) Sensitivity: detector Long response time, slow response, unable to measure temperature in real time; (2) target size: if the target is too small, it is easy to cause the temperature measurement product to fail to detect the target and cause temperature measurement failure; (3) temperature measurement range: the temperature measurement range is narrow and cannot be realized Measure the temperature range of wide temperature difference; (4) Environmental conditions: cannot...

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Problems solved by technology

[0002] In recent years, products related to non-contact temperature measurement have been favored by everyone in the market, but non-contact temperature measurement products on the market are easily affected by the following aspects, resulting in inaccurate measurement accuracy: (1) Sensitivity: detector Long response time, slow response, unable to measure temperature in real time; (2) target size: if the target is too small, it is easy to cause the temperature measurement product to fail to detect the target and cause temperature measurement failure; (3) temperature measurement range: the temperature measurement range is narrow and cannot be realized Measure the temperature range of wide temperature difference; (4) Environmental conditions: unable to adapt to a wide range of ambient temperature ranges

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