Positioning device for various short-circuit points of circuit board card

Abstract

The invention relates to the technical field of circuit line and electronic line hardware, in particular to a positioning device for various short-circuit points of a circuit board card, which mainlycomprises an MCU, a signal source driving module, a power supply module, a signal interface conditioning and collecting module, a TFT touch color screen interface and a JTAG updating interface. The MCU is used for driving the DDS chip and the AD chip and processing the acquired data; an STM32F103ZET6 chip is selected and used as the MCU. The signal source driving module mainly comprises an external driving hardware interface and a DDS module; the signal source driving module is used for outputting an alternating current signal to realize digital-to-analog conversion; an AD9833 chip is selectedas the DDS module; the power supply module is used for converting an externally provided power supply into a low-voltage voltage through the power supply module so as to provide a stable and reliablepower supply for each functional module; on-line debugging and on-line program upgrading of the short-circuit positioning device system can be realized without disassembly, and great convenience is brought to upgrading of a user.

Description

technical field [0001] The invention relates to the technical field of circuit lines and electronic circuit hardware, in particular to a positioning device for various short-circuit points of circuit boards. Background technique [0002] 1. Basic situation of traditional technology [0003] my country is a big manufacturing country, and the number of electronic products is also increasing year by year, from civilian to military, involving all aspects. With the rapid development of electronic technology, the performance requirements of electronic products are getting higher and higher, and the PCB wiring becomes more and more complex (the area is getting larger and the number of layers is increasing), and the value is getting higher and higher, especially the power-to-ground network is generally connected in parallel There are many components in the printed circuit board. After all the printed circuit board components are soldered, it needs to be powered on for testing or de...

AI Technical Summary

Problems solved by technology

[0016] By designing a signal detection acquisition to detect the AC electromagnetic wave signal injected on the circuit board, the peak value of the electromagnetic wave in different places can be measured, so as to find the short-circuit point and accurately locate the short-circuit point, which solves the problem of blindly searching for short-circuit points in the past. , improving the maintenance efficiency; by reserving the debugging interface, it is possible to realize online debugging and online program upgrade of the short-circuit positioning device system without disassembly; solve the problem of poor human-computer interaction, and realize the short-circuit point in a simple way position

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