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Automatic Error Compensation Method of Infrared Thermal Imaging Temperature Measurement System

A technology of infrared thermal imaging and automatic compensation, applied in radiation pyrometry, sensing radiation of moving objects, measuring devices, etc., can solve problems such as target distance sensitivity, achieve zero investment, improve adaptability, and zero lag effect

Active Publication Date: 2021-07-30
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of the defects in the prior art, the purpose of the present invention is to provide an automatic compensation method for distance and angle errors of the infrared thermal imaging temperature measurement system, to solve the problem that the existing thermal imaging temperature measurement system is sensitive to the target distance, and to improve the temperature measurement accuracy

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  • Automatic Error Compensation Method of Infrared Thermal Imaging Temperature Measurement System
  • Automatic Error Compensation Method of Infrared Thermal Imaging Temperature Measurement System
  • Automatic Error Compensation Method of Infrared Thermal Imaging Temperature Measurement System

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Embodiment Construction

[0035] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0036] figure 1 It is a flow chart of the automatic error compensation method in an embodiment of the present invention.

[0037] refer to figure 1 As shown, the distance and angle error automatic compensation method of the infrared thermal imaging temperature measurement system in this embodiment includes:

[0038] S100, according to the infrared thermal imaging image acquired by the thermal imager, determine the abscissa, ordinate and polar coordinate of the temperature measurement point of the ...

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Abstract

The invention provides an automatic compensation method for distance and angle errors of a thermal imaging temperature measurement system. According to the infrared thermal imaging image acquired by a thermal imager, the abscissa, ordinate and Polar coordinates; combined with the installation height of the thermal imager, the focal length, the focal length of the thermal imager lens, and the average height of the human body, the distance value and deflection angle value of the measured target are calculated through geometric relations; using the distance stored in the thermal imager in advance Error calibration curve, the original measured temperature value is multiplied by the corresponding calibration value, and the product is the compensated temperature value. The distance and angle error compensation method proposed by the present invention does not need any additional hardware equipment, and does not require additional acquisition actions. It can automatically adapt to the distance and deflection angle changes of the measured target, zero investment, zero lag, and high cost performance. It has wider practicality and versatility.

Description

technical field [0001] The invention relates to an error compensation method of an infrared thermal imaging temperature measurement system, in particular to an automatic compensation method for distance and / or angle errors of an infrared thermal imaging temperature measurement system. Background technique [0002] The advantages of the infrared thermal imaging body temperature testing system are obvious: long-distance, non-contact, multi-target, suitable for airports, subways, railways and building entrances, etc. The significance of body temperature testing lies in early screening, which is mainly used to find people with suspected fever in the crowd, and further conduct accurate body temperature measurement and follow-up inspection. [0003] However, the current thermal imaging body temperature screening system still has serious deficiencies, especially due to the influence of various factors in the use process, resulting in a significant drop in temperature measurement ac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J5/00G01J5/52
CPCG01J5/0025G01J5/53G01J5/80
Inventor 赵辉陶卫吕娜许凌志陈启恒付堉家
Owner SHANGHAI JIAO TONG UNIV
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