Wired and wireless hot backup redundancy multi-master communication method, and field gateway module

Abstract

The invention discloses a wired and wireless hot backup redundancy multi-master communication method and a field gateway module, wherein corresponding controlled objects are controlled in a field-level wired and wireless mutual backup double-network observe and control network so as to acquire the state of the monitored objects; the wired communication and the wireless communication of a network node module are both on line in the working, all modules in the general network preferably communicate by the wired form; the field gateway module provided by the invention can obtain the state of a field instrument or control a field apparatus in the observe and control field by the node module, and meanwhile, wired and the wireless communication units can achieve the redundancy multi-master communication by proper arithmetic, so as to build a field obverse and control system of double-network redundancy multi-master communication. With the adoption of the method, the reliability of the industrial field monitoring and control system is enhanced, and the method and the module have the advantages that the zero-cost communication is operated without additional redundancy management equipment.

Description

Technical field [0001] The invention belongs to the technical field of network communication, especially industrial field measurement and control network. Background technique [0002] 1) Fieldbus and its multi-master communication technology [0003] In the field of industrial applications, the fieldbus control system FCS has matured and gradually replaced the original distributed control system DCS. FCS has the advantages of simple installation, high digitization, fault diagnosis and protection operation according to default values. It can save costs for users and improve the level of automation and system intelligence. [0004] The working mode of fieldbus is divided into master-slave mode and multi-master mode. There is only one master in the master-slave mode fieldbus network, and the others are slaves. The slaves cannot communicate with each other, and the slaves only communicate with the master. In the multi-master mode, any network node in the fieldbus can become a host t...

AI Technical Summary

Problems solved by technology

[0014] 3) High operating costs

[0016] 1) The scope of application is mostly wide area network applications, not suitable for field-level measurement and control networks

[0017] 2) If it is applied in the industrial field measurement and control network, the operating cost is too high

[0018] 3) Redundancy management of communication requires a special module, which is not directly connected to the on-site instrument point

[0019] 4) This kind of redundant network still cannot avoid the cumbersome wiring installation and other problems at the measurement and control site

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