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Infrared temperature measurement calibration method

A technology of infrared temperature measurement and infrared radiation, which is applied in the field of infrared temperature measurement, can solve the problems of low accuracy of detection results and high detection false alarm rate, and achieve the effect of reducing false alarm rate and improving accuracy

Inactive Publication Date: 2018-04-20
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID +1
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Problems solved by technology

[0005] The invention provides an infrared temperature measurement and calibration method, which solves the problem of directly using purchased infrared detectors to detect thermal defects of electrical equipment in the current power grid, resulting in low accuracy of detection results and high detection false alarm rate technical issues

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Embodiment Construction

[0021] The embodiment of the present invention provides an infrared temperature measurement and calibration method, which is used to solve the problem of directly using purchased infrared detectors to detect thermal defects of electrical equipment in the current power grid, resulting in low accuracy of detection results and false alarm detection. high rate of technical issues.

[0022] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following The described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the pro...

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Abstract

The invention discloses an infrared temperature measurement calibration method. The method is characterized by through introducing an environment temperature variation and a temperature measurement distance, compensating a temperature measurement deviation brought by a temperature drift, in a temperature-regulated box, continuously changing an environment temperature in the box and using a black body to carry out temperature calibration, and acquiring a first corresponding relation between an image gray scale capable of reflecting an infrared heat radiation energy size and the environment temperature; in addition, correspondingly acquiring a second corresponding relation between the image gray scale and a black body temperature and a third corresponding relation between the image gray scale and a temperature measurement distance; and finally, fitting the first corresponding relation, the second corresponding relation and the third corresponding relation through a BP neural network andcalculating temperature information of an infrared temperature measurement system heat radiation target through fitting. A problem that temperature measurement precision is low because of the temperature drift caused by an environment temperature change is overcome, infrared temperature measurement precision is increased, and a false alarm rate of fault detection is reduced.

Description

technical field [0001] The invention relates to the technical field of infrared temperature measurement, in particular to an infrared temperature measurement calibration method. Background technique [0002] With the development of the national economy, the society has higher and higher requirements for the reliability of power supply. The power supply reliability of the power system is an important issue for the power sector. Power companies have to invest huge manpower and material resources every year to conduct regular inspections on transmission lines, so as to grasp and understand the operation of transmission lines at any time, and timely discover and eliminate hidden dangers. The traditional practice of regular power outages for preventive tests and maintenance can no longer meet the requirements of high reliability of the power grid. On-line monitoring and detection technology of electrical equipment has become an inevitable detection method and has been developed ...

Claims

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Application Information

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IPC IPC(8): G01J5/00G01J5/52
CPCG01J5/00G01J5/80G01J5/53
Inventor 钱金菊曾庆永肖小清顾温国李雄刚陈浩彭向阳
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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