Application Research Of Wireless Sensor Networks In Welder Group Control

As the wireless sensor network technology's rapid development, more and more extensive applications, wireless sensor networks for industrial monitoring have become increasingly evident advantages. Wireless sensor networks, is difficult to guarantee the stability of the link, the communication channel quality is relatively low, more frequent topology changes. How to improve the reliability of communication is important in wireless sensor networks research and also is a key issue for industrial monitoring.This paper is to study the wireless sensor network protocols to improve reliability and on that basis to achieve welder wireless group control system development.The main contents of this paper consist of welder wireless group control system hardware design and reliability improvement research of wireless sensor network protocols and welder group control system applications design based on wireless sensor networks, to achieve the high reliability of the welder wireless group control system.The first part of the paper is dedicated to an introduction to the hardware design of the welder wireless group control system. Hardware includes wireless nodes and wireless base stations, and wireless base stations circuit is a subset of the wireless nodes. Hardware includes the core module, power supply module, wireless communication module, serial communication module and the indicator and setting module. Hardware is the whole basis of the system functionality and performance, and the design is reasonable for the reliability of the nodes and the system have a great impact. So we should consider from chip selection, the external circuit design, PCB design and other aspects.Then, the author designs the welder wireless group control system application. The Software design of welder wireless group control system bases on PS-WSN.The application design of wireless base station and nodes in welder wireless group control system is introduced mainly in the form of flow chart.Finally, the author researches and implements the reliability improvement of wireless sensor network protocols and introduces the methods to improve reliability of the application in detail. Protocol improvement focuses on the routing layer protocols, including retransmission and the routing queue to improve the reliability of single-hop transmission, by improving neighbor discovery and parent selection mechanism to accelerate network building and self-healing, by adding terminal mechanism and fixed the parent selection to facilitate optimal allocation in different environment. Experiments show that the improved reliability of wireless sensor network protocol has been greatly improved to meet the requirements of welder control. There are four measures to improve reliability:by reducing the network load and serial port load increase the reliability of the uplink data, the use of triple-ACK mechanism to ensure the reliability of the downlink data, using HDLC protocol to enhance fault tolerance of the serial port, and using watchdog to ensure system stability. Welder wireless group control system has successfully passed the test of the industrial scene for a long time, and has stable and reliable performance.The improved wireless sensor network routing protocol reliability mechanism improves the reliability of wireless sensor networks effectively, expands the application field of wireless sensor networks, and enhances the practicality of wireless sensor networks. The paper designs and implements the welder group control system based on wireless sensor network protocols, which greatly reduces costs, increases installation flexibility and reduces the failure rate, and has broad market prospects. Now, welder wireless group control system is entering the marketing phase.