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A calibration method for infrared temperature measurement camera

A calibration method, infrared temperature measurement technology, applied in the direction of radiation pyrometry, measuring device, optical radiation measurement, etc., can solve the problems of detection result error, temperature result is not universal, level adjustment device can not meet people's use needs, etc. To achieve the effect of convenient adjustment and guarantee of detection accuracy

Active Publication Date: 2021-06-11
张梅
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The infrared temperature measurement camera is a device used to detect the temperature distribution around the device, but with the development of science and technology, people have higher and higher requirements for the level adjustment device, resulting in the traditional level adjustment device can no longer meet people's needs;
[0003] The existing infrared temperature measurement camera calibration method is mainly to first measure the temperature of each object by the infrared temperature measurement camera, and then manually use the temperature measurement device to accurately measure the temperature of the object, and then compare it with the temperature detected by the camera , so as to detect the error between the temperature detected by the camera and the actual object temperature, but because the object temperature is greatly affected by environmental factors, it is easy to cause errors in the detection results, and because this method can only detect the camera at a specific distance and a specific temperature error, so the detected temperature results are not universal, so we propose a calibration method for infrared temperature measurement cameras

Method used

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  • A calibration method for infrared temperature measurement camera
  • A calibration method for infrared temperature measurement camera

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as figure 1 Shown, a kind of infrared temperature measuring camera calibration method, this method comprises the following steps:

[0032] Step 1: Randomly select a point within the detection range of the camera as a basic point, and place a heat source at this point, the heat source is selected from a heating wire, and after placement, the distance between the heat source and the camera is detected by a range finder;

[0033] Step 2: Control the heating of the heat source, and record the temperature parameters of the camera and the heat source, the temperature parameters include the time node and the temperature at the time node, stop when the temperature of the heat source is constant, and draw a temperature change diagram, the temperature of the heat source It is detected by a thermometer, and the time interval between time nodes is 1s;

[0034] Step 3: Comparing the temperature parameters of the camera with the temperature parameters of the heat source to obta...

Embodiment 2

[0041] Such as figure 1 Shown, a kind of infrared temperature measuring camera calibration method, this method comprises the following steps:

[0042] Step 1: Randomly select a point within the detection range of the camera as a basic point, and place a heat source at this point, the heat source is selected from a heating wire, and after placement, the distance between the heat source and the camera is detected by a range finder;

[0043] Step 2: Control the heating of the heat source, and record the temperature parameters of the camera and the heat source, the temperature parameters include the time node and the temperature at the time node, stop when the temperature of the heat source is constant, and draw a temperature change diagram, the temperature of the heat source It is detected by a thermometer, and the time interval between time nodes is 1.5s;

[0044] Step 3: Comparing the temperature parameters of the camera with the temperature parameters of the heat source to ob...

Embodiment 3

[0050] Such as figure 1 Shown, a kind of infrared temperature measuring camera calibration method, this method comprises the following steps:

[0051]Step 1: Randomly select a point within the detection range of the camera as a basic point, and place a heat source at this point, the heat source is selected from a heating wire, and after placement, the distance between the heat source and the camera is detected by a rangefinder;

[0052] Step 2: Control the heating of the heat source, and record the temperature parameters of the camera and the heat source, the temperature parameters include the time node and the temperature at the time node, stop when the temperature of the heat source is constant, and draw a temperature change diagram, the temperature of the heat source It is detected by a thermometer, and the time interval between time nodes is 2s;

[0053] Step 3: Comparing the temperature parameters of the camera with the temperature parameters of the heat source to obtain...

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Abstract

The invention discloses a method for calibrating an infrared temperature measuring camera, comprising the following steps: detecting the distance between a relative point and a base point relative to the camera, and comparing the distance, the precise temperature of the base point, and the precise temperature of the relative point to obtain the error distance temperature Calculate the average error distance temperature according to the error distance temperature, and add it to the camera temperature in the detection area to obtain the precise temperature of the detection area. In the method for calibrating an infrared temperature measuring camera according to the present invention, firstly, by randomly selecting a point within the detection range of the camera, and comparing the temperature parameter of the camera with the temperature parameter of the heat source, the point detected by the camera can be detected more accurately The second is to randomly select a relative point, then compare these two points, and adjust the detection accuracy of the camera within this range according to the comparison result, so as to ensure that the camera is within its detection range detection accuracy.

Description

technical field [0001] The invention relates to the field of infrared temperature measuring cameras, in particular to a method for calibrating an infrared temperature measuring camera. Background technique [0002] The infrared temperature measurement camera is a device used to detect the temperature distribution around the device, but with the development of science and technology, people have higher and higher requirements for the level adjustment device, resulting in the traditional level adjustment device can no longer meet people's needs; [0003] The existing infrared temperature measurement camera calibration method is mainly to first measure the temperature of each object by the infrared temperature measurement camera, and then manually use the temperature measurement device to accurately measure the temperature of the object, and then compare it with the temperature detected by the camera , so as to detect the error between the temperature detected by the camera and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J5/52
CPCG01J5/80G01J5/53
Inventor 张梅徐汉元
Owner 张梅
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