Low-voltage power line bandwidth carrier concentrator

Abstract

The invention discloses a low-voltage power line bandwidth carrier concentrator, which consists of a hardware structure and a software structure, wherein the hardware structure consists of a micro controller unit, a data storage unit, an electric quantity storage unit, a power line network bridge communication unit, a GPRS communication unit and a power supply module unit; and the software structure consists of a system scheduling module, a power line network bridge module, an RS485 driving module, a GPRS wireless communication module, and an embedded database module. In the invention, embedded design is adopted, embedded micro controller technology, bandwidth power line carrier technology, GPRS wireless communication technology, embedded database technology, multipath I / O multiplexing technology and the like are integrated, and the GPRS communication module can receive a remote meter reading instruction transmitted by a management center on site, read user electric quantity data, and sends user electric quantity data to the management center through the GPRS communication module. The concentrator is simple in operation and convenient to use and has a high application value and a promising application prospect in the technical field of remote meter reading of a power system.

Description

(1) Technical field: [0001] The invention relates to a low-voltage power line broadband carrier concentrator, which can receive the instructions issued by the management center through wireless communication technology, and receive the data uploaded by the collector (specially used for collecting user electric energy meter power information) through the low-voltage power line broadband carrier technology. The user's power is collected, and then the user's power is sent to the management center through wireless communication technology. Among them, it involves embedded Linux operating system technology, broadband power line carrier technology, wireless communication technology based on GPRS (General Packet Radio Service), embedded database technology, and multiple I / O multiplexing technology, which belongs to the automatic meter reading technology of power systems field. (two) background technology: [0002] With the rapid development of my country's electric power industry,...

AI Technical Summary

Problems solved by technology

These meter reading systems generally have problems such as difficult construction, narrow bandwidth, low speed, poor real-time performance, and inability to realize two-way fast communication. High-level management requirements such as electricity prepayment, power interruption and restoration, and electricity theft prevention

In view of the above problems, it is proposed to use the low-voltage power line broadband carrier communication technology to develop and apply the meter reading system. Since the power line broadband carrier communication technology uses modulation technologies such as OFDM (Orthogonal Frequency Division Multiplexing) and DMT (Multi-Carrier Modulation), it solves the long-term problem. Since the power line carrier communication technology is unstable, unreliable, signal attenuation is large, transmission bandwidth and distance are limited, etc.

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