CN213986735U

CN213986735U - System for digital circuit fault diagnosis

Info

Publication number: CN213986735U
Application number: CN202023333738.XU
Authority: CN
Inventors: 王连华; 王慧; 姜斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-08-17
Anticipated expiration: 2030-12-30

Abstract

The utility model discloses a system for be used for digital circuit fault diagnosis. The industrial control computer is in communication connection with the fault diagnosis module through the communication module, the power supply module is electrically connected with the fault diagnosis module, an input/output interface is connected outside the fault diagnosis module, the fault diagnosis module comprises an excitation signal sending module, a signal acquisition module, an extraction module, a storage module and a comparison and judgment module, the excitation signal sending module, the signal acquisition module and the input/output interface are in communication connection, the storage module is in communication connection with the signal acquisition module, the extraction module is in communication connection with the storage module, and the comparison and judgment module is in communication connection with the extraction module. The utility model discloses can carry out quick diagnosis to the digital circuit trouble to connect different circuit that awaits measuring and can carry out failure diagnosis to different digital circuit, accommodation is wide, and fault detection efficiency is high.

Description

System for digital circuit fault diagnosis

Technical Field

The utility model relates to a circuit fault diagnosis technical field specifically is a system for digital circuit fault diagnosis.

Background

The development of electrical appliance intellectualization, the digital circuit technology is widely applied to electrical equipment; because the digital circuit is manufactured more finely, electrical equipment can not work normally due to faults caused by internal or external reasons in the working process of the digital circuit, the structure is more and more complex along with the higher and higher integration level of the digital circuit, and the fault detection efficiency of the traditional manual detection method is very low or even infeasible.

SUMMERY OF THE UTILITY MODEL

The technical insufficiency to the aforesaid exists, the utility model aims at providing a system for digital circuit fault diagnosis, it can diagnose the digital circuit trouble, improves fault detection efficiency.

In order to solve the technical problem, the utility model adopts the following technical scheme:

a system for digital circuit fault diagnosis is characterized by comprising an industrial control computer, a communication module, a fault diagnosis module and a power module, wherein the industrial control computer is in communication connection with the fault diagnosis module through the communication module, the power module is electrically connected with the fault diagnosis module, an input/output interface is connected outside the fault diagnosis module, the fault diagnosis module comprises an excitation signal sending module, a signal acquisition module, an extraction module, a storage module and a comparison and judgment module, the excitation signal sending module, the signal acquisition module and the input/output interface are in communication connection, the storage module is in communication connection with the signal acquisition module, the extraction module is in communication connection with the storage module, and the comparison and judgment module is in communication connection with the extraction module.

The beneficial effects of the utility model reside in that: the digital circuit fault diagnosis device can be used for rapidly diagnosing faults of the digital circuit, can be used for diagnosing faults of different digital circuits by connecting different circuits to be detected, and is wide in application range and high in fault detection efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic diagram of a system for digital circuit fault diagnosis according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, a system for digital circuit fault diagnosis includes an industrial control computer, a communication module, a fault diagnosis module and a power module, where the industrial control computer is in communication connection with the fault diagnosis module through the communication module, the power module is electrically connected with the fault diagnosis module, the fault diagnosis module is externally connected with an input/output interface, the fault diagnosis module includes an excitation signal sending module, a signal acquisition module, an extraction module, a storage module and a comparison and judgment module, the excitation signal sending module, the signal acquisition module and the input/output interface are in communication connection, the storage module is in communication connection with the signal acquisition module, the extraction module is in communication connection with the storage module, and the comparison and judgment module is in communication connection with the extraction module.

When the device is used, the fault diagnosis module is connected with a diagnosed digital circuit through the input and output interface, and the power supply module is used for supplying power to the fault diagnosis module;

the method comprises the steps that a test command is sent through an industrial control computer, a fault diagnosis module receives a diagnosis command signal through a communication module, an excitation signal sending module sends an excitation signal to a diagnosed digital circuit, a signal acquisition module acquires output response of the digital circuit to be tested and stores the result in a storage module, an extraction module extracts stored output response data of the digital circuit to be tested and sends the output response data to a comparison and judgment module, and the comparison and judgment module compares the received actual response with an expected response to judge whether the digital circuit to be tested normally operates; the comparison and judgment module feeds back the obtained result to the industrial control computer through the communication module; the industrial control computer can analyze the data of the result.

The utility model discloses a design can carry out quick diagnosis to the digital circuit trouble to can carry out failure diagnosis to different digital circuit through connecting different circuit that awaits measuring, accommodation is wide, and fault detection efficiency is high.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A system for digital circuit fault diagnosis is characterized by comprising an industrial control computer, a communication module, a fault diagnosis module and a power module, wherein the industrial control computer is in communication connection with the fault diagnosis module through the communication module, the power module is electrically connected with the fault diagnosis module, an input/output interface is connected outside the fault diagnosis module, the fault diagnosis module comprises an excitation signal sending module, a signal acquisition module, an extraction module, a storage module and a comparison and judgment module, the excitation signal sending module, the signal acquisition module and the input/output interface are in communication connection, the storage module is in communication connection with the signal acquisition module, the extraction module is in communication connection with the storage module, and the comparison and judgment module is in communication connection with the extraction module.