Research On Load Balance And Power Amplifier Of Wireless Sensor Network For Industrial Monitor And Control

Wireless sensor network (WSN) is an international concern hot edge multidisciplinary research. The major traditional industrial control wiring using a wired network is not flexible, seriously affected by the environment, cable maintenance cost defects. Therefore, compared with traditional wired networks, industrial monitoring network based on wireless sensor network has some strong advantages.In order to improve the energy efficiency of the industrial monitoring WSN, an improved collection tree protocol (CTP) basing on complete-balanced collection tree, called LB-CTP (Load Balance Collection Tree Protocol), is proposed, in which node balance level and "busy node access avoidance" mechanisms are defined. In order to share the burden of the busy nodes, the related nodes access to network according to LB-CTP routing algorithm in the routing setup stage. To meet the node functional requirements of the industrial monitoring WSN, a power amplifier scheme based on separation device of WSN node is designed. Then, the feasibility of the design scheme is proved through the ADS (Agilent Technologies) simulation.First, a literature review is given on research status of industrial monitoring, followed by analysis of the current research status in wireless sensor network protocols. Then analyse the functional requirements of the industrial monitoring WSN. Further, give a literature review on research of load balance to the current status for WSN routing protocol.Then, to meet the requirement of energy consumption balance between nodes for WSN, an improved collection tree protocol LB-CTP is proposed, in which node balance level and "busy node access avoidance" mechanisms are defined. In order to share the burden of the busy nodes, the related nodes access to network according to LB-CTP routing algorithm in the routing setup stage. To evaluate the algorithm, the LB-CTP is implemented on the TinyOS and runs on TOSSIM simulation platform. The results show that LB-CTP can balance network load of WSN more effectively comparing with CTP.Subsequently, in order to increase the transmission distance of the node for WSN, a power amplifier scheme of the node for WSN is designed, the scheme improve the node by increasing the power of radio frequency and the sensitivity of received signal. Then, the feasibility of the design scheme is proved through the ADS simulation.Finally, the industrial printing and dyeing enterprise energy management system is proposed. A WSN data acquisition system of the industrial printing and dyeing enterprise energy management system is designed. Further, the design of physical network,link layer,routing,types of the sensors and positions of the sensor nodes are given. At last, a wireless data acquisition system based on CC2430 and TinyOS platform with the LB-CTP routing algorithm is builded to achieve the actual operation of the network, collecting and monitoring.The achievements in the thesis will be the basis for development of industrial monitoring wireless sensor network in industrial field.