Wireless modbus system based on Lora technology

Abstract

The invention discloses a wireless modbus system based on a Lora technology. According to the wireless modbus system based on the Lora technology disclosed by the invention, in the aspect of physicalconnection, an AP is connected with a host on a traditional RS485 bus; an ED is connected with a slave on the traditional RS485 bus; the AP and the ED form a wireless star network in a self-organization form; an application layer protocol still keeps the original modbus protocol of a user same; and a wireless network level performs data transmission through a wireless private protocol in a Lora modulation mode, performs addressing through a self-adaptive learning mechanism according to a modbus address, and sends information to the AP or the ED in a transparent transmission mode. By means of the wireless modbus system based on the Lora technology disclosed by the invention, the user does not need to change the original protocol; a wired system can be converted into a wireless system without secondary development; the wireless modbus system based on the Lora technology is specifically suitable for being used in the severe environments, such as subways, dam safety monitoring, side slopesand bridges, for a long time; and the wireless modbus system based on the Lora technology is particularly suitable for monitoring a scene having a complex field environment and difficult wiring.

Description

technical field [0001] The invention relates to a wireless communication network, in particular to a wireless modbus system based on Lora technology. Background technique [0002] With the rise of Lora technology, many Lora-related products have appeared on the market, and many module manufacturers have also launched similar products, such as point-to-point transparent transmission modules and Lora-to-serial port modules. Most products have the following drawbacks: [0003] 1. Single function. Some products can only realize point-to-point communication. [0004] 2. Poor networking compatibility. Some products identify the network according to their own addresses. Once it involves networking and communication, users need to carry out secondary development, and the user's original protocol needs to be changed, but many users do not have the ability to develop. [0005] 3. Poor networking performance. Some products are networked through transparent transmission. Because th...

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Problems solved by technology

[0009] The technical problem solved by the present invention is to provide a wireless modbus system based on Lora technology for the above-mentioned existing technical defects, which is used to replace the traditional RS485 bus, solve the problem of difficult wiring between devices, and improve the development efficiency of users

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