Method for detecting open circuit and short circuit of line

Abstract

The invention discloses a device for detecting an open circuit and a short circuit of a line. The device comprises a plurality of light-emitting components connected to a line interface and an electro-acoustic transducer connected with the line interface through a driving circuit; a driving power supply is connected between the driving circuit and the line interface; when the line is in a closed-circuit condition, all the light-emitting components are turned on, the driving circuit is conducted, and the electro-acoustic transducer sounds; when one or multiple lines are in a short-circuit condition, the light-emitting components connected to the short-circuit line are turned off, the driving circuit is cut off, and the electro-acoustic transducer does not sound; and when any line is in an open-circuit condition, all the light-emitting components are turned off, the driving circuit is cut off, and the electro-acoustic transducer does not sound. The device disclosed by the invention has the advantages of simple circuit structure, low manufacturing cost, rapid detection speed, stability and reliability.

Description

technical field [0001] The invention relates to a line detection device, in particular to a line open circuit and short circuit detection device. Background technique [0002] With the development of science and technology and the rapid update of electronic product detection methods, people have put forward higher requirements for line detection technology. Fault points and fault categories, in order to eliminate faults in time and reduce unnecessary troubles. [0003] In the production process of data module products, there are often open circuit or short circuit problems caused by the problems of the circuit board itself, and open circuit or short circuit problems caused by unavoidable tin throwing, continuous welding, and bump welding during the welding process. In order to strictly control the quality, the open circuit and short circuit performance must be fully tested before the core parts are assembled into finished products. The warehousing products cannot achieve a...

AI Technical Summary

Problems solved by technology

The detection device made by using the principle of single-chip microcomputer has a display mode of LCD screen or luminous tube, and the detection time is short. When judging the fault, the sound and display are expressed at the same time. The test is convenient and reliable, but the cost is high, and it is not suitable for mass production.

Direct purchase of network open circuit and short circuit tester, although the production process is omitted, but the price is high, the detection time is too long, there is no sound prompt, and it is completely dependent on the naked eye to observe whether the product is normal or not, resulting in low production efficiency

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