One-master-multiple-slave bus type wired data collection network communication protocol

Abstract

The invention relates to a one-master-multiple-slave bus type wired data collection network communication protocol. A master station is located on a bus type wired network endpoint, slave stations areevenly distributed on the bus type wired network, and any adjacent stations on a bus can receive signals and correctly decode messages. The slave station executes data collection, the convergence ofdata collected by multiple remote slave stations is achieved by the relay transmission of slave stations closer to the master station. All stations in the network maintain global topology informationof the network, communication protocol execution is started from the transmission of a data request message by the master station, the message is sequentially relayed by a plurality of adjacent slavestations with distances from the master stations from close to far and finally arrives at the slave station that is furthest away from the master station. The adjacent slave stations respectively receive data response messages, add own station numbers and the collected data to the received data response messages and broadcast the modified data response messages. By adoption of the one-master-multiple-slave bus type wired data collection network communication protocol provided by the invention, the problems of insufficient coverage capability of a single station in the network, random signal coverage and synchronization difficulty of multiple stations are solved.

Description

technical field [0001] The present invention relates to the technical field of bus-type wired network communication, and more specifically, relates to a one-master multi-slave bus-type wired data acquisition network communication protocol. Background technique [0002] Bus-type wired data acquisition network is widely used in the fields of industrial control and power line carrier communication. Typical applications include smart home network based on power carrier communication and power infrastructure monitoring network based on power carrier communication. This kind of network has several typical characteristics: 1) The network structure is one master and multiple slaves, that is, there is one master station and multiple slave stations in the network, and the purpose of the master station is to monitor the status of each distributed monitoring unit (slave station) on the network and Collect local data from slave stations; 2) Due to multiple factors such as large network c...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a one-master multi-slave bus type wired data acquisition network communication protocol, which can solve the problems of insufficient coverage of a single site in the network, random signal coverage and difficult synchronization of multiple sites

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