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Process industry control system based on wireless field subnetwork and channel assessment

A technology of wireless network and channel evaluation, applied in the field of automation system, can solve the problems affecting the characteristics of wireless technology and insufficient wireless technology, and achieve the effect of improving system reliability and real-time performance and improving channel quality

Inactive Publication Date: 2012-12-12
SUZHOU UNIV OF SCI & TECH
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Problems solved by technology

However, due to the technical background and other reasons, the wireless technology in the existing process control including these three technologies also has deficiencies:
Thus affecting the performance of wireless technology features;
[0005] (2) Like most fieldbus technologies, the existing wireless technology is limited to extending communication to the bottom layer of the field, and does not involve how to set up a field control network

Method used

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  • Process industry control system based on wireless field subnetwork and channel assessment

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Embodiment Construction

[0016] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0017] see figure 1 As shown, a process industry control system based on wireless field sub-network and channel evaluation includes two parts: basic network 1 and field wireless network 2. The basic wireless network 1 includes several industrial computers 3, Ethernet 4, and several gateways 4 and several wireless access points, the several industrial computers 3 are connected to several gateways 5 through Ethernet 4 to form a traditional wired network, the several wireless access points 6 are connected to the several gateways 5, the A number of gateways 5 and the number of wireless access points 6 form a mesh network to form the basic wireless network 1; the field wireless network 2 includes a number of sensors 7, a number of controllers 8 and a number of actuators 9. The on-site wireless network 2 accesses the entire system through...

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Abstract

The invention discloses a process industry control system based on a wireless field subnetwork and channel assessment. The system comprises a basic wireless network and a field wireless network, wherein the basic wireless network is formed by adding wireless access points on the basis of conventional wireless networks or Ethernet gateways, and the gateways and the wireless access points form a mesh network to form the basic wireless network serving as a backbone network and an access network of the field wireless network. The wireless technology in the control system is used for formation of an own architecture, functional characteristics of wireless communication are brought into full play, and reliability and instantaneity of the process industry control system and channel quality are improved.

Description

technical field [0001] The invention relates to an automation system, in particular to a process industry control system based on wireless field sub-network and channel evaluation. Background technique [0002] Now, after Fieldbus and Industrial Ethernet, industrial wireless technology has become a new research hotspot. The wide application of industrial wireless technology in the industrial field is an inevitable trend, especially in process industries with high energy consumption and low resource utilization. However, wireless technology is not widely used at present. One of the main reasons is that the industrial environment is harsh, and the reliability of wireless communication links cannot well meet the reliability and real-time requirements of process control. [0003] Many companies, enterprises and universities at home and abroad have started research on industrial wireless technology, and industrial wireless technology has made continuous progress. In the field ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W84/18
Inventor 许洪华许尤
Owner SUZHOU UNIV OF SCI & TECH
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