Researching And Application Of Routing And Location Algorithm Based On WSN

With the continuous development of wireless communication, sensors, embedded technology, networking technology has received worldwide attention through the WSN (Wireless Sensor Network) technology, set up a bridge leading to the physical world and the digital world. so that people’s production and life more convenient. At present, the technology has been used in aerospace, military combat natural environment testing and other areas. This paper studies the WSN technology in cities and urban lighting joint security monitoring system, using WSN technology, the security monitoring system monitoring equipment and urban street lighting system by means of a combination of wireless, two for the upcoming two systems together First, form a set of lighting in one of the new monitoring system.Currently, urban lighting equipment is widely distributed and no rules to follow, it is difficult to achieve through the streetlight streetlights addressable node number RTOS; security monitoring areas due to lack of standardized, security monitoring systems in various industries interconnection between regions did not do to each other. When an unexpected accident occurs places, although the system can automatically alarm, but in tracing criminal deeds, but also often due to different units, corporate fragmented, resulting in a delay or even omitting the alarm information, eventually leading security monitoring system throughout the city should not play its some effect.By WSN technology, lighting and security are two systems integrated to form an energy-efficient, help new streetlights digital city management and security monitoring systems combined. When the system is not only retains the original function of the two systems, but also through information technology to make the complementary function between the original system. The new system can effectively play its role in intelligence and security lighting around the clock, for the majority of the people services.Study of the above new system routing protocol and node localization algorithm. Given LEACH algorithm requires a network cluster head node can communicate directly with the Sink node, while the larger regional network monitoring system of the new paper, resulting LEACH algorithm does not apply. This article will node spatial information and gradients, node residual energy, energy consumption and other factors cluster head for cluster head election and the data transfer process, to achieve an improved LEACH algorithm to solve the monitored area is limited to achieve a monitoring network life cycle extended. Meanwhile, for the DV-Hop localization algorithm is low positioning accuracy is insufficient, proposed the concept of similarity neighbor nodes, overcomes the DV-Hop localization algorithm between nodes in a single drawback from discrimination. While the multi-hop communication, DV-Hop algorithm for a line instead of the actual distance in a straight line from the lack of consideration of the communication path, the similarity between neighboring nodes using the law of cosines and its amendments. Thus realizing the DV-Hop algorithm improvements to improve the positioning accuracy.The improved algorithm used in urban lighting and urban security joint monitoring system, not only the nodes in the network to achieve more accurate positioning, but also in the process of information transmission, routing is more energy efficient. In order to maximize their role in lighting and security equipment, but also to provide technical assurance for digital intelligent cities.