Energy Efficient And Load Balance Routing Algorithm For WirelessHART Based On Data Aggregation

As Wireless technology continues to improve WSN technology now can be used in industrial areas of security control, detection, asset management and other traditional control system, and it provides a cost-effective alternative means of communication. WirelessHART is the first open Wireless communication standard designed for industrial monitoring and control.WirelessHART network is a self-organizing, self-healing, self-adaption network, and can automatically adapt to changes depends on the plant environment.WirelessHART is the first open-standard wireless communication protocol designed for industrial automation and process. The WirelessHART standard uses TDMA and channel hopping techniques to control access of the network and to communicate between network devices. Compared with the decentralized control adopted by wireless ad-hoc or peer-to-peer networks, WirelessHART advocates explicit and centralized network management for reliable and real-time network communication.Before WirelessHART is released, there have been a few publicly available standards on office automation, such as ZigBee and Bluetooth. However, these technologies cannot meet the stringent requirements of industrial applications. Different from the star network or the tree network in which the transmissions always use the fixed links, the topology of WirelessHART is a mesh network in which data can be transmitted (or retransmitted) along different paths. Due to the existence of multi-path routing between Mesh nodes, the network has a strong fault-tolerance and robustness for a single point or a single link failure. Routing protocol design is an important research area in wireless sensor networks.In this paper, we focus on the problem of WirelessHART network routing and link selection. Under the premise of ensuring the link quality, energy efficient and load balance, we design a routing algorithm and super-frame scheduling based on the idea of data aggregation to reduce data transmissions and node load in WirelessHART network to control the routing device power consumption, prolong the network lifetime and improve the robustness of the transmission network. Experimental results show that compared with the traditional routing algorithms, our algorithm has significantly improvement on controlling nodes energy consumption and prolonging network lifetime.