Power line carrier communication terminal control device, system and method

Abstract

The invention relates to a power line carrier communication terminal control device, system and method, in particular, a PLC terminal control device, system and method. The control system comprises a PLC terminal system, a control device and an MQTT releaser; the control device establishes a PLC connection with the terminal system and establishes an Ethernet connection with the releaser. The device is used for receiving a subscription request sent by the PLC terminal system, wherein the subscription request contains a PLC terminal system identifier and a theme for controlling the PLC terminal system; the device establishes a corresponding relationship between the theme and the PLC terminal system identifier in a mapping table according to the subscription request, and sends a subscription response message to the PLC terminal system according to the corresponding relationship, wherein the subscription response message contains the theme; the device receives a control message released by the MQTT releaser, wherein the control message contains a control word and a theme, wherein the control word is used for controlling operation on the theme; and the device sends the control message to the PLC terminal system according to the corresponding relation. According to the control device, system and method of the invention, a simple, intelligent and flexible Internet-of-things middleware platform is constructed; and a PLC carries MQTT messages. The control device, system and method can be applied to scenes which have poor communication conditions or are not suitable for being provided with network cables.

Description

technical field [0001] The present invention relates to the field of the Internet of Things, in particular to a power line carrier communication terminal control device, system and method. Background technique [0002] With the gradual rise of Internet of Things technology, the application of Internet of Things in smart homes, smart buildings, and smart meter reading is increasing. The underlying access network of the Internet of Things includes power line carrier communication (English: PowerLineCarrier, referred to as: PLC), Zigbee protocol (English: Zigbee), wireless LAN protocol based on the IEEE802.11b standard (English: Wireless-Fidelity, referred to as: Wi- Fi), Ethernet, etc. Among them, PLC is widely favored due to its unique advantages. PLC can directly use the existing power distribution network as a transmission line, and the power line is the network with the widest coverage. Its scale is unmatched by any other network. Therefore, PLC can easily penetrate into ...

AI Technical Summary

Problems solved by technology

The control system has complete functions and is easy to expand, but it requires more hardware, the development of software and hardware is difficult, and the load is too heavy, which is not conducive to the control and scheduling of small and medium-sized systems.

[0004] The practices of some small manufacturers and large manufacturers are two extremes. Most of them directly control the IoT terminals, that is, the business is carried in the protocol, which is not flexible enough, not conducive to function expansion, and not conducive to the adaptation of various terminals.

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