Data interaction method and system based on double communication channels and valve terminal control system

Abstract

The invention discloses a data interaction method and system based on double communication channels and a valve terminal control system. The method comprises the steps: receiving an authentication request sent by a control host through a management channel after the control host is accessed into a server through the double communication channels, and carrying out the identity authentication; after the identity authentication is passed, allocating resource types and resource quantities to the control host according to the access quantity and the data length of the control host, and acquiring the channel width of a data channel according to the resource types and the resource quantities; carrying out channel allocation according to the connection state of the control host and channel parameters and communication code rates required by communication, acquiring channel configuration files, and sending the channel configuration files to the corresponding control host; and after a channel configuration response of the control host is received through the data channel, obtaining a transmission priority according to the connection rate and the data refresh frequency between the server and the control host, and carrying out data interaction according to the transmission priority. A multi-frequency-band sharing mode is adopted, and a communication mechanism is upgraded so that the data interaction speed is higher, and the reliability is higher.

Description

technical field [0001] The invention relates to the technical field of valve island control and data interaction, in particular to a data interaction method and system based on dual communication channels and a valve island control system. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] Pneumatic technology refers to an automatic control technology that uses compressed air as the power source for motion control. It is an important means to realize manufacturing and automatic control. With the advantages of low cost, simple structure and high reliability, pneumatic control is widely popularized and applied, and plays a very important role in the field of automation. However, there are still some practical problems in the actual application process. The main control components of pneumatic control are solenoid valves and cylinders. PLC or ...

AI Technical Summary

Problems solved by technology

The pneumatic valve island integrates the solenoid valve and the electric drive module to make the structure more compact and more reliable; the pneumatic valve island is a new generation of gas-electric integrated control components, and has experienced multi-needle type, field bus type, etc. Multiple stages, and with the development, the bus-type valve island has changed from RS485, CAN and other industrial bus forms to Ethernet bus forms, but there is always the problem of multiple cables

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