An industrial control safety communication system and communication method

Abstract

The present invention relates to an industrial control safety communication system and communication method, including a cloud and at least two control terminals; the cloud includes a certificate server, a cloud security module and an industrial control server; the control terminal includes a 5G communication module, a control terminal security module and an industrial control module; the industrial control server is connected to the 5G communication module, and the control terminals are connected through field bus communication. The cloud security module and the control terminal security module provide password services and secure storage functions; Encryption and decryption operations, session key generation and hash operations; the industrial control server calls the cloud security module to provide password service functions; the industrial control module calls the control terminal security module to provide password service functions and secure storage functions; the certificate server generates and saves public key certificates for the cloud , write the public key into the security module of the control terminal; the cloud security module saves the corresponding private key to ensure safe, reliable, simple and efficient communication between industrial control modules.

Description

technical field [0001] The invention belongs to the technical field of industrial control communication, and in particular relates to an industrial control safety communication system and a communication method for ensuring safe encrypted communication between a plurality of industrial control modules on a field bus. Background technique [0002] Field bus (Field bus) is a technology applied to the production site to implement two-way, serial, multi-node digital communication between field devices and between field devices and control devices. It mainly solves the digital communication between field devices such as controllers, intelligent instruments and meters, and actuators in the industrial field, as well as the information transmission between these field control devices and advanced control systems. As the basis of the industrial data communication network, it communicates the connection between the field-level control equipment and the higher control management layer ...

AI Technical Summary

Problems solved by technology

[0003] However, while the fieldbus brings convenience, quickness and practicality to the communication between multiple industrial control modules, there are also potential safety hazards that cannot be ignored.

For example, the identity of the industrial control module is counterfeited, and the information transmitted between the industrial control modules is eavesdropped, tampered with, replayed, etc. These security threats are likely to cause major accidents, serious economic losses or other adverse effects

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