System and method for testing ultraviolet visible light coincidence deviation of ultraviolet detector
A detector, visible light technology, applied in the direction of testing dielectric strength, instruments, measuring devices, etc., to achieve the effect of easy implementation, simple and fast debugging
Active Publication Date: 2015-07-22
CHINA ELECTRIC POWER RES INST +1
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[0004] In order to solve the problem that the weak angle offset of the ultraviolet and visible light channels of the ultraviolet detector affects the accuracy of ultraviolet corona detection, the present invention provides a system and method for testing the coincidence deviation of ultraviolet and visible light of the ultraviolet detector, by separately detecting the ultraviolet and visible light channels The imaging pixel deviation of the center of mass of the cross target is used to calculate the coincidence deviation of ultraviolet light and visible light
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[0041] A system and method for testing the coincidence deviation of ultraviolet and visible light of an ultraviolet detector provided by the present invention, the structural diagram of the system is as follows figure 1 As shown, it includes a deuterium lamp 1, an LED lamp 2, a cross target 3, an image acquisition card 6, a computer 7, and an ultraviolet detector 8. The deuterium lamp 1 and the LED lamp 2 are located on one side of the cross target 3, and the ultraviolet detector 8 is located on the cross target. On the other side of the target 3 , the image acquisition card 6 is located inside the computer 7 and connected to the ultraviolet detector 8 .
[0042] The ultraviolet detector 8 acquires the ultraviolet image of the cross target 3 irradiated by the deuterium lamp 1 in the ultraviolet imaging mode, and acquires the visible light image of the cross target 3 irradiated by the LED lamp 2 in the visible light mode.
[0043] The image acquisition card 6 is installed insid...
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The invention provides a system and a method for testing ultraviolet visible light coincidence deviation of an ultraviolet detector. The system comprises a deuterium lamp (1), an LED (light emitting diode) lamp (2), a cross target (3), an image acquisition card (6), a computer (7) and an ultraviolet detector (8), wherein the deuterium lamp (1) and the LED lamp (2) are positioned on one side of the cross target (3); the ultraviolet detector (8) is positioned on the other side of the cross target (3); the ultraviolet detector (8) obtains the ultraviolet image of the deuterium lamp (1), which is irradiated onto the cross target (3), in an ultraviolet imaging mode; in a visible light mode, the visible light image of the LED lamp (2), which is irradiated onto the cross target (3), is obtained; the signals of the ultraviolet image and the visible image are collected into the computer (7) by the image acquisition card (6); and the coincidence deviation of the ultraviolet ray and the visible light is calculated by the computer (7). The test method provided by the invention is easy to realize and is simple and quick for debugging, and digitalized in a test process.
Description
technical field [0001] The invention relates to the technical field of discharge fault detection for high-voltage power transmission and transformation equipment, in particular to a system and method for testing the coincidence deviation of ultraviolet and visible light of an ultraviolet detector. Background technique [0002] Transmission lines and substation electrical equipment work in the atmospheric environment. In some cases, corona discharge and surface partial discharge will occur with the decrease of insulation performance or the appearance of structural defects. During the discharge process, the corona and partial discharge parts may radiate ultraviolet rays outward. Therefore, the observation of ultraviolet rays can be used to indirectly evaluate the insulation status of operating equipment and detect equipment insulation defects in time. [0003] The UV detector has two channels: UV and visible light. The ultraviolet channel is used for corona imaging, and the v...
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IPC IPC(8): G01R31/12G01R35/00
Inventor 袁帅阎春雨毕建刚是艳杰杨宁
Owner CHINA ELECTRIC POWER RES INST