The Application And Improvement On The LEACH Routing Protocol In Wireless Sensor Network

With the development of the sensor technology ,microsystem and wireless communication technology, the wireless sensor network is arisen in the later of the 20 century. This new technology provides the new method of catching the information and strengths the ability for fetching the data information. Therefore, the wireless sensor network plays the important roles in the theory research and the application values. In the 21st century, the wireless sensor network has been becoming the most hottest topic in the fields of IT and communication.Wireless sensing network combines the physical information and wireless transmission. Wireless network provides the most direct and most effective true information to people. It has lots of advantages which the traditional network does not have. It is now widely used in state security, environment monitoring and disaster relief, agricultural, medical care, industrial automation and other areas.This paper is based on the CZU Natural Science Fund Project"rainfall monitoring system based on wireless sensor network". This paper makes improvements in routing protocols and saves energy consumption for wireless sensor nodes when applying in the environmental monitoring and data acquisition or processing for the rains. The contributions of this thesis are as follows:1. Achieving the research and analysis for the controlling algorithm for the network topology and routing protocol in the wireless sensor network; meanwhile, the proposition for the advantage of controlling the routing algorithm and investigation about the classical routing controlling protocol such as LEACH are also concerned. The improvement for the limitation about this protocol is also concluded.2. The improvement protocol named LMOR(LEACH of Multi—hop and Optimal Routing) based on the LEACH is suggested.3. Finally, the LMOR is applied in the rain monitor system under the wireless sensor network.