Signal reproduction integrated circuit board fault detection device

Abstract

The invention discloses a signal reproduction type integrated circuit board failure detection device which is composed of two portions including a hardware portion and a circuit portion. The hardware portion comprises a housing, alternating current connection wires, a power switch, a USB interface, a SD card interface, a circuit board interface to be detected, an integrated board, keys, a display screen, and a power indicator light. The circuit portion comprises a power circuit, a multi-channel signal acquisition and reproduction circuit and a master control circuit. The master control circuit comprises a single chip microcomputer, a display device, a USB interface, a storage device and the like. The multi-channel signal acquisition and reproduction circuit comprises a single chip microcomputer, an A / D conversion and D / A conversion circuit, a signal amplification circuit and the like. The device is used to acquire signals of a standard circuit board, and the acquire input signal is reproduced onto a corresponding input channel of a failure integrated circuit board, and at the same time, the input / output signal conditions of the failure integrated circuit board are acquired, so that from the input / output signal abnormal conditions, the position of a failure can be judged without knowing the internal structure of the integrated circuit board, so the maintenance speed can be greatly quickened, and the maintenance difficulty can be simplified.

Description

[technical field] [0001] The invention belongs to an integrated circuit board signal collection and reproduction device, in particular to a signal reproduction type integrated circuit board fault detection device. [Background technique] [0002] With the development of electronic technology and social progress, and the continuous development of semiconductor technology, integrated circuit boards have been involved in various machinery and equipment in all walks of life, and electrical equipment controlled by various integrated circuit boards has entered people's lives, bringing It is very convenient, but once the integrated circuit board fails, the electrical equipment cannot be used normally, so the maintenance work of the integrated circuit board is becoming more and more important. The traditional maintenance method is to use various traditional instruments and equipment such as multimeters and oscilloscopes, and rely on technicians to manually detect and search for maint...

AI Technical Summary

Problems solved by technology

[0002] With the development of electronic technology and social progress, and the continuous development of semiconductor technology, integrated circuit boards have been involved in various machinery and equipment in all walks of life, and electrical equipment controlled by various integrated circuit boards has entered people's lives, bringing It is very convenient, but once the integrated circuit board fails, the electrical equipment cannot be used normally, so the maintenance work of the integrated circuit board becomes more and more important

The traditional maintenance method is to use various traditional instruments and equipment such as multimeters and oscilloscopes, and rely on technicians to manually detect and search for maintenance based on experience. It is difficult to locate faults, the repair rate is not high, and the speed is slow, and the current integrated circuit board components It is getting denser and denser. In fact, it is difficult to analyze and understand the working principle of the circuit before repairing it. Especially for imported equipment, the manufacturer will not provide the schematic diagram for the sake of technical confidentiality. If we only rely on traditional maintenance tools such as multimeters and oscilloscopes in the past Can no longer meet the maintenance requirements of modern equipment

Images