Testing device and testing method for multiple channels of LED lamp beads

Abstract

The invention discloses a testing device for multiple channels of LED lamp beads. The testing deviceis formed by assembling and connecting an MCU, an analog switch module, a detection module and more than three sets of testing assemblies; each set of testing assembly is corresponding to any single LED lamp bead in a testing object in a matched mode. The detection module is connected between the MCU and the analog switch module and exchanges an analog switch control signal, an LED lamp bead working current sampling signal and a photoresistor feedback signal; and the MCU is a programmable processor and is preset with a working current and a threshold value for judging whether the brightness of the lamp beads is qualified or not according to the photoresistor feedback signal. The MCU controls the analog switch module to switch the connected lamp beads to be detected and receives fed-back current signals and resistance signals to intelligently judge the quality of the lamp beads. The testing device has the advantages of low cost, process automation, flexibility improvement, visual and healthy test result and the like, and breaks through the limitation of test space; in addition, according to the testing method, the MCU is easy to adjust the threshold value, so that testing requirements can be met, and universality is embodied.

Description

technical field [0001] The present invention relates to a technical solution for photoelectric performance testing, in particular to a device and method for easily testing electrical performance and brightness for any or all LED lamp beads in an LED strip. Background technique [0002] LED light strips and LED light strips (hereinafter collectively referred to as LED light strips) are welded with multiple LED lamp beads on flexible circuit boards or PCB hard boards, which are widely used in various energy-saving and environmental protection industries and various decoration industries, such as Furniture, cars, advertisements, lighting, ships, bars, etc. Because the LED lamp beads have the same package but different parameters, such as the brightness of the LED is different; When the factory produces LED light strips, it often happens that the materials are mixed or the parameters of the purchased lamp beads do not meet the design requirements. After the welding is completed...

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Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to propose a multi-channel LED lamp bead testing device and its testing method to solve the problem of electrical testing of any LED lamp bead or lamp group in the LED strip in a limited space scenario. Operability and cost issues of performance and brightness detection

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