Infrared temperature measurement method for reducing ambient temperature contrast

A technology of ambient temperature and infrared temperature measurement, applied in the field of infrared temperature measurement, can solve the problem that the measurement error has not been systematically analyzed and compensated, and achieve the effect of simple implementation and quantitative evaluation

Pending Publication Date: 2021-11-26
北京市计量检测科学研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the measurement error caused by the environmental background temperature and the environmental temperature contrast caused by the change of the measurement distance has not been systematically analyzed and compensated.

Method used

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  • Infrared temperature measurement method for reducing ambient temperature contrast
  • Infrared temperature measurement method for reducing ambient temperature contrast
  • Infrared temperature measurement method for reducing ambient temperature contrast

Examples

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Embodiment 1

[0044] In order to facilitate the understanding of the solutions and effects of the embodiments of the present invention, a specific application example is given below. Those skilled in the art will understand that this example is only for the purpose of facilitating the understanding of the present invention, and any specific details thereof are not intended to limit the present invention in any way.

[0045] figure 2 A schematic diagram showing a distance compensation experiment according to one embodiment of the present invention.

[0046] First determine the calibration distance of the infrared thermal imager or infrared detector, so that the infrared detector is aligned with the center of the black body along the x-axis, such as figure 2 , set the black body temperature as T B = 40°C, when the measurement distance is constant, close the doors and windows of the laboratory, adjust the ambient temperature through the air conditioner in a closed room, or change the ambie...

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Abstract

The invention discloses an infrared temperature measurement method capable of reducing environment temperature contrast. The method may include the steps of: determining a constant blackbody temperature source TB; when the measurement distance is determined, obtaining the specific gravity relation between the black body temperature TB and the environment temperature TU at different environment temperatures by changing the environment temperature TU; when the environment temperature is determined, obtaining the specific gravity relation between the environment temperature TU and the black body temperature TB under different measurement distances by changing the measurement distances; and calculating the actual temperature of the measured object through the proportionality coefficient. According to the invention, the measurement error caused by the environment temperature contrast can be effectively reduced, the measurement is accurate, and the measurement error can be effectively reduced.

Description

technical field [0001] The invention relates to the field of infrared temperature measurement, and more specifically, relates to an infrared temperature measurement method that reduces the contrast of ambient temperature. Background technique [0002] In many fields such as electric power, chemical industry, transportation machinery, and medical treatment, it is very necessary to know the temperature of equipment, products, and parts in time. Due to the non-contact characteristics of the infrared temperature measurement system, it can have the advantages of long measurement distance, short response time, wide measurement range, high sensitivity, high accuracy, and no influence on the temperature field distribution. The thermal imaging camera must be calibrated before leaving the factory, that is, when measuring at the calibration distance, the thermal imaging camera has the highest temperature measurement accuracy. When the detection distance is very far away, the target oc...

Claims

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Application Information

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IPC IPC(8): G01J5/52
Inventor 赵霞史去非吴健赵子龙
Owner 北京市计量检测科学研究院
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