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Characteristic analyzer used for low-voltage power line carrier wave channel

A low-voltage power line and feature analysis technology, applied in the field of analyzers, which can solve the problems of carrier signal attenuation and large line impedance variation.

Active Publication Date: 2011-09-14
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

[0004] However, there are various background noises (including colored background noise, narrow-band noise, asynchronous periodic pulse noise), synchronous periodic pulse noise and random pulse noise on the low-voltage power line, and the load on the low-voltage power line changes frequently, and the line impedance changes greatly. Will cause great attenuation to the carrier signal

Method used

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  • Characteristic analyzer used for low-voltage power line carrier wave channel
  • Characteristic analyzer used for low-voltage power line carrier wave channel
  • Characteristic analyzer used for low-voltage power line carrier wave channel

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Embodiment Construction

[0025] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] The analyzer is mainly composed of panel, power board, function board I, function board II and power amplifier board. Its block diagram is as follows figure 1 shown.

[0027] (1) panel

[0028] The panel mainly includes TFT liquid crystal display, keys, encoders and potentiometers. The function version I scans the input of buttons, encoders, potentiometers and other signals on the panel in real time, controls the sampling mode and speed, and displays the results on the TFT display.

[0029] (2) Power board

[0030] The power board includes two functions. One is to use a high-performance switching power supply, input AC 220V voltage, and generate four main DC voltages required by each function board of the analyzer, including 12V, -12V, 5.7V and -5.7V; the other is Couple the carrier signal generated by the an...

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Abstract

The invention provides a characteristic analyzer used for a low-voltage power line carrier wave channel, wherein the analyzer comprises a panel, a power plate, a function plate I, a function plate II and a power amplification plate, can complete the functions such as the analysis on low-voltage power line transmission characteristic, multi-path fading analysis, noise analysis, impedance measurement and the like, and provides scientific basis for selecting the carrier wave frequency and carrier wave technology of the power line carrier wave communication of the electric consumption information collecting system.

Description

Technical field: [0001] The invention relates to an analyzer, in particular to a characteristic analyzer used for a low-voltage power line carrier channel. Background technique: [0002] Power line carrier is a unique communication method of power system. Power line carrier communication refers to the technology of using existing power lines to transmit analog signals or digital signals at high speed through carrier wave. The biggest feature is that there is no need to re-establish the network. for data transfer. [0003] The development of low-voltage power line carrier communication technology provides the most convenient and economical communication resources for the construction of today's electricity consumption information collection system for power users, meets the basic needs of users' electricity consumption information collection, and formulates relevant carrier communication technology standards for the State Grid Corporation of China The necessary foundation ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B3/54H04L12/26
Inventor 章欣张密邹和平郑安刚陈昊巫钟兴
Owner CHINA ELECTRIC POWER RES INST
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