Mobile communication relay device based on low voltage carrier

Abstract

The invention relates to a mobile communication relay device based on a low voltage carrier. The mobile communication relay device comprises a host module, a slave module, a power line communication modem module, a communication module and a serial port switching module, the serial port switching module is mounted on acquisition equipment, the slave module is connected with the serial port switching module by virtue of a reticle, a GPRS module of a concentrator is mounted on the communication module and is connected with the host module by virtue of a reticle, and data remote transmission is performed between the host module and the slave module by virtue of a power line carrier. On the basis of a carrier-to-GPRS module, a carrier-to-WiFi module is integrated, and acquisition of electricity utilization information of a signal blind area in a basement and an IP phone function are realized. A many-to-many function is realized, and mutual interference of carrier signals is reduced, so that reliable data transmission is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a mobile communication relay device based on a low-voltage carrier. Background technique [0002] An important part of the construction process of the metering automation system is the communication of the terminal. During the installation of the terminal, some public network signal blind spots will be encountered. One of the important scenarios is the basement of the community. The terminal installed in the basement of the community cannot access the public network. network signal, resulting in the inability of the final metering automation system to communicate interactively with the terminal. [0003] There are three main traditional solutions to this problem: [0004] (1) Lengthen the terminal antenna and lead the terminal antenna to a place with strong outdoor signal. The main difficulty in the construction of this scheme lies in the need for rewiring. Wh...

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Problems solved by technology

The construction is more complicated and the construction cost is high

[0005] (2) The use of signal amplifiers is only suitable for areas with weaker signals, and signal amplifiers in completely blind areas cannot be used

However, this method can only realize one-to-one function. One concentrator corresponds to one carrier-to-GPRS device. Since there are often multiple concentrators in the power distribution room, it is easy to cause carrier signals to interfere with each other, resulting in interruption of data transmission. At the same time, this device cannot realize Call function between basement workers and background main station personnel

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