Device and method for fault diagnosis of low-voltage power line broadband carrier communication network

Abstract

The invention relates to a low voltage power line broadband carrier communication network fault diagnostic device used on site, relates to a corresponding method, and belongs to the carrier communication technical field. The device includes a carrier transmitting and receiving circuit, a communication circuit, a storage circuit, a human-computer interaction circuit, and a microprocessor. The microprocessor comprises a collection unit, a judgment unit, a data frame unit, a monitoring unit, an analysis unit, a topology unit, a positioning unit, a measurement module, a detection module, a frequency spectrum module, a discrimination module, a test module, and an output module. Through the collection and frequency spectrum analysis of noise signals on the power line, various kinds of noise such as background noise, periodic noise, and sudden noise which influence the carrier communication can be intuitively displayed, and various kinds of fault information of the on-site broadband carrier communication network can be fast diagnosed and intuitively reflected, so that corresponding processing measures are timely adopted. The low voltage power line broadband carrier communication network fault diagnostic device and method are suitable for the operation management based on the power line carrier communication network very much.

Description

technical field [0001] The invention relates to a carrier communication network fault diagnosis device, in particular to a field low-voltage power line broadband carrier communication network fault diagnosis device, and also relates to a corresponding method, which belongs to the technical field of carrier communication. Background technique [0002] The application of low-voltage power line broadband carrier communication technology in the power user's electricity information collection system is being rapidly promoted. However, the traditional on-site fault diagnosis method of low-voltage power line broadband carrier communication network requires engineering and technical personnel to carry signal samplers, spectrum analyzers, isolated power supplies and other equipment to the site for measurement and analysis. These instruments and equipment are expensive and inconvenient to carry. Moreover, the sampling data of many instruments requires professional personnel to analyz...

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Problems solved by technology

However, the diagnosis results of the above-mentioned patents can only show whether the communication network is caused by interference from nature or other signal sources, and the base station system failure, etc., without in-depth analysis of the fault information (for example: the electromagnetic interference signal collected by the base station is not time-frequency transformation, cannot graphically display noise and signal frequency domain waveforms)

Secondly, this patent does not collect the topology information and routing information of the communication network. Due to the lack of collection and analysis of protocol layer messages between the various nodes of the entire communication network, it is impossible to locate the protocol interaction failure of the communication network. Therefore, The above existing methods are not suitable for fault diagnosis based on power line carrier communication network

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