Method for enhancing reliability of industrial wireless sensor network

Abstract

The invention relates to industry wireless sensor network field, and provides a method to increase the reliability of the industry wireless sensor network. The method includes installing a plurality of wireless network cards at the sensor terminal node, initially setting up all the network cards in turn for the terminal node, and initially generating a network card communication quality queue for the terminal node. In the network card communication quality queue, the network card with best quality is assigned as the current master working network card, the other network cards are the backup working network cards for the node. Timely update the network card communication quality queue of the terminal node, switch the network card according to the network card communication quality queue, and use the network card with best quality to transmit the data. During the period that the network card communication quality queue of the terminal node is updated, if the current master working network card communicates abnormally, then switch to the backup network card for the data transmission by the quality sequence from high quality to low quality in the network card communication quality queue until the data is successfully transmitted. The method increases the data transmission reliability of the industry wireless sensor network, reduces the control system cost, and is particularly suitable for the industry control field with abominable environment.

Description

technical field [0001] The invention relates to the field of network transmission, in particular to the field of industrial wireless sensor networks. Background technique [0002] Industrial wireless sensor network technology is a hot technology in the field of industrial control following fieldbus technology. It is a revolutionary technology that reduces the cost of industrial measurement and control systems and improves the application range and reliability of industrial measurement and control systems. growth point. [0003] The wireless sensor network is composed of a large number of cheap small sensor nodes with perception, computing processing and wireless communication capabilities deployed in the monitoring area. Each node interacts with the environment through sensors or control parameters, and then completes certain tasks through network interconnection. In a wireless sensor network, each sensor node can cooperatively perceive, collect and process the information...

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is that in the application of industrial environment, the reliability of the entire network data transmission is reduced due to failures in the process of real-time data collection and action behavior control of the wireless sensor network, and the energy and energy of the wireless sensor network nodes The communication range is limited, and node failure is prone to occur, so that some sampled data may not be transmitted to the observation device.

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