Short-circuit detection circuit and short-circuit detection method for detecting mainboard

Abstract

The invention relates to the technical field of short-circuit detection, in particular to a short-circuit detection circuit and a short-circuit detection method for detecting a mainboard. The circuitcomprises a driving circuit, an AND gate circuit, a detection point circuit, a relay circuit and a comparator circuit, wherein the relay circuit is electrically connected with the detection point circuit, the AND gate circuit and the comparator circuit respectively; the AND gate circuit is electrically connected with the drive circuit and the comparator circuit, the drive circuit is electrically connected with a GPIO port of an external control system, the non-short-circuit state and the short-circuit state are output to the external control system through the drive circuit, the control systemdetects the difference of the levels, and then whether the tested mainboard is in the non-short-circuit state or the short-circuit state can be judged, so as to determine whether the next power-on performance test of the tested mainboard is performed or not; the whole process can be completely and automatically controlled, and human intervention is not needed, so the purpose of automatic production is achieved, and the production efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of short circuit detection, in particular to a short circuit detection circuit and a short circuit detection method for detecting a mainboard. Background technique [0002] At present, in the field of industrial production automation, especially for mainboard manufacturers, the short-circuit test before the mainboard under test is powered on for functional testing often needs to be manually tested with a multimeter, or a separate station is arranged to use professional short-circuit test equipment. detection. After the short-circuit test is passed, the next main board functional test can be entered. The purpose of this is to avoid further damage to the main board under test or damage to the test equipment due to the short circuit. The impact of the existing technical solutions is that the production efficiency is low, and the labor and man-hour input cannot be reduced, the production cost is difficult to co...

AI Technical Summary

Problems solved by technology

After the short-circuit test is passed, you can enter the next motherboard functional test. The purpose of this is to avoid further damage to the tested motherboard due to short-circuit, or damage the test equipment.

The impact of the existing technical solutions is that the production efficiency is low, and the labor and man-hour input cannot be reduced, the production cost is difficult to compress, and it does not conform to the development trend of industrial production automation.

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