Power line broadband carrier based concentrator communication module

Abstract

The invention discloses a power line broadband carrier based concentrator communication module. The power line broadband carrier based concentrator communication module comprises a three-phase carrier signal coupling circuit, a three-phase time-division transceiver circuit, a power line carrier filtering circuit, a sending amplification circuit, a zero-cross detection circuit, a power line carrier processor, a GPRS (General Packet Radio Service) communication module and a routing circuit, wherein an acquisition terminal of the three-phase carrier signal coupling circuit is connected with a power line, the three-phase carrier signal coupling circuit is connected with the power line carrier processor through the three-phase time-division transceiver circuit and the power line carrier filtering circuit, an input terminal of the zero-cross detection circuit is separately connected with the power line and the three-phase carrier signal coupling circuit, an output terminal of the zero-cross detection circuit is connected with the power line carrier processor, a sending terminal of the power line carrier processor is connected with the three-phase time-division transceiver circuit through the sending amplification circuit, and the GPRS communication module and the routing circuit are in communication connection with the power line carrier processor separately. According to the power line broadband carrier based concentrator communication module, long-distance networking communication transmission can be achieved, a networking mechanism is high in timeliness, and the networking time is short.

Description

technical field [0001] The invention relates to the technical field of power line carrier communication, in particular to a concentrator communication module based on power line broadband carrier. Background technique [0002] Power Line Communication (PLC) is a communication technology for data transmission through wires. In other words, PLC uses the existing power grid as a signal transmission medium, so that the power grid can perform data communication while transmitting power. . This method can effectively monitor and control power equipment, meters and household appliances in the grid. At the same time, the power line carrier technology is plug and play, which greatly improves the efficiency of production, work and life, and saves the cost of wiring construction to a large extent. At present, the power line carrier technology is increasingly leading the communication mode of the power system (electricity information collection system) and civilian life (smart home). ...

AI Technical Summary

Problems solved by technology

The existing automatic meter reading system for smart electric energy meters mostly adopts 485 wiring, narrowband power line carrier or Zigbee, 475MHz small wireless and other communication methods from electric energy meters, collectors to concentrators. Such communication methods have short distances and large transmission interference , slow meter reading speed, unstable meter reading status, etc., the reliability of data using electric terminals and the real-time performance of data transmission are greatly reduced

However, the original intention of the power line is to transmit electric energy, not data transmission. For data communication, its channel is not ideal, and it is a very unstable transmission channel, which is specifically manifested in severe noise interference, large time-varying and signal attenuation However, the currently used broadband power line communication BPLC (BPLC: BroadPower Line Carrier) will have the following problems in practical applications: the BPLC signal is greatly attenuated, the communication distance is short, the transmission stability is poor, and the communication under severe interference The quality is so bad that you can't even connect

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