Data processing method and system for hybrid access of multi-protocol Internet of Things terminal to RS485 bus

Abstract

The invention discloses a data processing system for hybrid access of a multi-protocol Internet of Things terminal to an RS485 bus. An RS485 bus interface, an RS485 bus data transceiver module and various protocol processing modules are arranged in an industrial Internet of Things gateway, and the Internet of Things terminals of various protocols are accessed to the industrial Internet of Things gateway through the RS485 bus interface. The RS485 bus data transceiving module is connected with the RS485 bus interface and the various protocol processing modules and is used for finishing queuing and sending of all protocol command frames and receiving of response frames and distributing the response frames to the corresponding protocol processing modules. According to the invention, multiple protocol internet-of-things terminals can be accessed to the RS485 bus, the deployment and laying of the RS485 bus when the multiple protocol terminals are optimized, and the cost is saved. Through priority scheduling and protocol frame queuing, important commands are sent to the Internet of Things terminal in time, and timeliness in industrial Internet of Things application is met. The invention further provides a corresponding data processing method for hybrid access of a multi-protocol Internet of Things terminal to an RS485 bus.

Description

technical field [0001] The invention belongs to the technical field of industrial internet of things, and more specifically relates to a data processing method and system for mixed access of multi-protocol IoT terminals to RS485 bus. Background technique [0002] The Industrial Internet of Things is to continuously integrate various acquisition and control sensors or controllers with perception and monitoring capabilities, as well as mobile communication, intelligent analysis and other technologies into all aspects of the industrial production process, thereby greatly improving manufacturing efficiency, improving product quality, and reducing product quality. Cost and resource consumption, and finally realize the upgrading of traditional industries to a new stage of intelligence. In terms of application form, the application of industrial Internet of Things has the characteristics of real-time, automation, embedded (software), security, and information interoperability and i...

AI Technical Summary

Problems solved by technology

When multiple IoT terminals are connected to the RS485 bus and many commands are issued, it will cause data congestion on the RS485 bus, resulting in important commands not being sent to the IoT terminals in time, resulting in control failure and heavy losses in production activities

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