A two-side visual detection robot and a detection method thereof

Abstract

A two-side visual detection robot and a detection method thereof are disclosed. The robot at least includes turnover devices accommodating and fixing LED backlight sheets, driving the LED backlight sheets to turn over, and allowing a zone to be detected of at least one surface of the LED backlight sheets on the turnover devices to be exposed; image collection devices movably arranged on the turnover devices to collect images of the exposed zones to be detected of the LED backlight sheets on the turnover devices; and a control device connected to the turnover devices and the image collection devices. The robot is exquisite in design and simple in structure, and two surfaces to be detected of each LED backlight sheet can be pointed at a camera lens respectively through turnover to achieve image collection, and therefore, automatic two-side defect detection of LED backlight sheets can be performed by utilizing a visual recognition technique, manual intervention on a detection process is low, problems of detection leakage and a low detection precision are solved, the speed and accuracy of detection with machine vision are far higher than those of detection with human eyes, and good detection precision and a high efficiency are effectively achieved.

Description

technical field [0001] The invention relates to visual detection equipment, especially a double-sided visual detection robot and a detection method thereof. Background technique [0002] LED, also known as light-emitting diode, is a kind of semiconductor diode, which can convert electrical energy into light energy. Like ordinary diodes, a light-emitting diode is composed of a PN junction and also has unidirectional conductivity. When a forward voltage is applied to a light-emitting diode Finally, the holes injected from the P region to the N region and the electrons injected from the N region to the P region recombine with the electrons of the N region and the holes of the P region within a few microns near the PN junction, resulting in spontaneous emission fluorescence. [0003] Due to the high electro-optical conversion efficiency of LED, green environmental protection, long life (up to 100,000 hours), low working voltage (about 3V), repeated switching without loss of life...

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Problems solved by technology

[0004] Among them, the LED lamp is a product formed by integrating multiple LED lamp beads together. After the generation is completed, the LED lamp needs to be tested to confirm whether there is any problem with each LED lamp bead. The existing LED lamp detection mainly It is carried out manually and operated manually, which is not only inefficient, but also the detection accuracy is not guaranteed, and it is also prone to missed detection. Manual detection deviates from the current general trend of intelligent production, and there is room for improvement.

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