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Sub-health running status recognition method of electrical device

An electrical device and operating state technology, applied in the direction of measuring device, measuring electricity, fault location, etc., can solve the problems of manpower, material resources, burning components, equipment, loss of electrical devices, etc., to achieve cost saving, high reliability, The effect of reducing losses

Inactive Publication Date: 2008-04-16
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Traditional electrical devices do not have intelligent real-time monitoring means, and the maintenance of the device is realized through artificial periodic inspection, which consumes a lot of manpower and material resources, especially the remote maintenance of the device. The cost of periodic inspection of this device is very high , In addition, the method of repairing by technicians when there is a failure also has disadvantages, that is, once the electrical device fails, it may cause huge losses. % is caused by damage to key electronic components
[0003] The so-called "sub-health" refers to the normal operation of the equipment on the surface, but there is a problem with one or more components, but the problem is not enough to cause the equipment to fail, but the parameters of the component with the problem at this time are running Changes have occurred, such as changes in the voltage drop of the PN junction, changes in the leakage current of a pin, etc. At this time, it is the "sub-healthy" operating state. The "sub-healthy" operating state is relatively hidden and difficult to be noticed by the user. However, if the equipment continues to work in the "sub-healthy" state, it will appear in an "unhealthy" state, that is, a failure will not only burn components and equipment, but also indirectly cause other economic losses and lead to serious consequences.

Method used

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  • Sub-health running status recognition method of electrical device
  • Sub-health running status recognition method of electrical device
  • Sub-health running status recognition method of electrical device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The identification method of "sub-healthy" operating state of electrical equipment, using the parameter measurement of the 27n80 field effect tube to illustrate the working principle, the microprocessor uses PIC18F2550, supports multi-channel ten-digit A / D conversion, and integrates USB2 .0 communication module, M is the Hall DC transformer, which is used to measure the current flowing through the two pins when the FET is working normally, so as to obtain the resistance value of the PN junction, and the voltage drop between the PN junctions of the FET The change can determine whether the field effect tube is working normally, whether it is in the "healthy voltage" working state, that is, in the critical fault state. There are three A / D monitoring points in the circuit, which are used to measure the field effect tube gate conduction voltage and mutual inductance respectively. Inductor induced voltage and PN junction voltage drop.

[0026] Working process: When the ground...

Embodiment 2

[0032] The method for identifying the "sub-healthy" operating state of an electrical device described in Example 1, according to the attached figure 1 , the data processing server is embedded in the device, and a cost-effective embedded system is used as the data processing server, and the collected signals are transmitted to the data processing server in various ways, and the server obtains the parameter change rate through calculation. If it exceeds the standard range, then Timely pre-alarm, due to the lack of equipment, the embedded system with high cost performance can meet the real-time requirements of data storage and calculation.

Embodiment 3

[0034] The method for identifying the "sub-healthy" operating state of an electrical device described in Embodiment 1 or 2, as attached figure 2 , the data processing server is remote, for example, the data processing server is located at a node on the Internet, and this server has high performance and can withstand a large amount of data storage and calculation work. This method is suitable for electrical device manufacturers and has a wide range of applications. Customer groups and areas far away from after-sales service can realize unified testing and unified management of products purchased from all over the world in this way. In this way, a data measurement terminal and an Internet data transmission module can be added to the electrical device. The Internet data transmission module uploads the judgment results of multiple data measurement terminals in batches and categories to the manufacturer's data processing server for unified storage and management. The data processin...

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Abstract

The invention discloses a method for identifying the 'sub-healthy' operating condition of an electrical device, aiming at the problem that the prior electrical device does not have an intelligent real time monitoring means, so the maintenance of the device is realized through the regular check by people which is costly in terms of labor and materials; particularly the remote maintenance of the device through regular check is too costly. The method of the invention comprises the following steps of: monitoring the status of the electrical device by a data processing server, a data measuring terminal and the electrical device, with the data processing server memorizing the historical records of the collection capacities of all malfunction key points of the corresponding electrical device through a database software, and with the data measuring terminal carrying out long term real time monitoring over the malfunction key points of the electrical device and uploading the collection capacities of the malfunction key points to the data processing server through various communication means; judging if the present state of the electrical device is the malfunction critical state through a forecasting algorithm; and then reminding a user or a technician to repair the malfunction point in time. The method of the invention is suited to examining electrical devices.

Description

Technical field: [0001] The invention relates to an identification method for intelligent real-time monitoring of the operating state of an electrical device. Background technique: [0002] Traditional electrical devices do not have intelligent real-time monitoring means, and the maintenance of the device is realized through artificial periodic inspection, which consumes a lot of manpower and material resources, especially the remote maintenance of the device. The cost of periodic inspection of this device is very high , In addition, the method of repairing by technicians when there is a failure also has disadvantages, that is, once the electrical device fails, it may cause huge losses. % is caused by damage to key electronic components. [0003] The so-called "sub-health" refers to the normal operation of the equipment on the surface, but there is a problem with one or more components, but the problem is not enough to cause the equipment to fail, but the parameters of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00G01R31/02G01R31/08
Inventor 石广范闫广明王冠然
Owner HEILONGJIANG UNIV
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