Method and system for conducting remote infrared temperature measurement on coal pile surfaces
An infrared temperature measurement, long-distance technology, applied in the direction of radiation pyrometry, measuring device, optical radiation measurement, etc., can solve the problem of increased influence of weather and achieve the effect of improving accuracy
Active Publication Date: 2014-08-27
CHINA SHENHUA ENERGY CO LTD +2
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[0003] The current infrared imaging temperature measurement technology often focuses on the characteristics of the infrared imaging system itself, as well as on the processing of digital infrared images. The longer the path of infrared radiation transmission, the greater the impact of weather on infrared imaging temperature measurement
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[0017] The present invention will be further described below in conjunction with specific embodiments and accompanying drawings, and these descriptions are not intended to limit the scope of the present invention.
[0018] figure 1 A method for remote infrared temperature measurement of the surface of a coal stack according to one embodiment of the present invention is shown. Such as figure 1 As shown, the method comprises the following steps 1.1 to 1.5:
[0019] Step 1.1: Take the infrared radiance map L of the coal pile under test 0 ;
[0020] Step 1.2: Calculate the reflection intensity L of the measured coal pile at the time of shooting f , Large-scale radiance L C and atmospheric transmittance τ
[0021] Step 1.3: According to the result of step 1.2, remove the reflection component and atmospheric radiation component of the measured coal pile from the infrared luminance map to obtain the infrared radiance map L after removing the weather effect M ; This step 1.3...
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The invention provides a method for long-distance infrared temperature measurement on the surface of coal piles, said method comprising the following steps 1.1 to 1.5: Step 1.1: photographing the infrared radiance map of the measured coal piles; Step 1.2: calculating Reflection intensity, atmospheric pass radiance and atmospheric transmittance of the measured coal pile at the time of shooting; Step 1.3: According to the results of step 1.2, remove the reflection component and atmospheric pass radiation component of the measured coal pile from the infrared brightness map to obtain The infrared radiance map after removing the weather effect; step 1.4: determine the emissivity data of the measured coal pile at the shooting time; and step 1.5: determine the coal pile according to the emissivity data and the infrared radiance map after removing the weather effect surface temperature. The invention can improve the accuracy of coal stack temperature measurement results.
Description
technical field [0001] The invention relates to a method and system for long-distance infrared temperature measurement on the surface of coal stacks. Background technique [0002] The essence of infrared imaging temperature measurement technology is: because infrared targets (such as coal piles) are constantly radiating and reflecting energy outward, the radiated and reflected energy is transmitted through atmospheric radiation and reaches the infrared imaging system. The infrared imaging system uses infrared detection The detector and optical imaging objective lens receive the radiation image of the infrared target, convert the radiation energy into an electrical signal, and then convert it into a digital image corresponding to the radiation distribution of the infrared target through the subsequent imaging electronics system, and then convert the infrared radiation brightness and temperature , then the surface temperature of the infrared target can be calculated. [0003]...
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IPC IPC(8): G01J5/00
Inventor 谷红伟许文海梁建兵董丽丽杨精志李瑛王淑英缪希伟高广亮白增辉石磊
Owner CHINA SHENHUA ENERGY CO LTD