Research On Communication Technology Of Multi-sensor Cooperative Surveillance

With the development of national economy,the living standard of people has been improved,at the same time,the safety awareness of people has been enhanced,in this way,the surveillance system has gradually come into our life.Both the national security frontier surveillance system and the civil security monitoring system have been widely used.If the surveillance system can only function as a camera,the collected information will be unitary.However,multi-sensor cooperative monitoring system takes a variety of sensors to collect information,in this way,the sensor network can obtain more comprehensive information,and the results will be more accurate.Multi-sensor cooperative surveillance system adopts ZigBee protocol base on IEEE 802.15.4 communication standard.People has been attracted by ZigBee protocol's advantages,such as low cost,small consumption and small size etc.We can learn the communication of multi-sensor cooperative surveillance system from this paper,and study the routing algorithm and link collision algorithm for sensor networks.In order to make the data more reliable in the process of network transmission,and guarantee the communication quality of the transmission link at the data link layer,the ACK monitoring signal is added to the MAC layer's carrier intercept multiple access control protocol,which leads to an increase in the collision rate of the link.In this paper,the two binary tree conflict decomposition method is proposed to alleviate the link conflict problem.In order to prove the effectiveness of the algorithm,Matlab simulation software is used to simulate the superiority of the algorithm.In view of the application characteristics of multi sensor cooperative monitoring communication system,the TEEN routing algorithm is chosen as the basis.In order to make the algorithm suitable for this application and achieve a substantial increase in the efficiency of the utilization of energy resources,the author has studied to make an improvement on the basis of the TEEN routing algorithm in this paper.The improved TEEN routing algorithm no longer adopts random selection of cluster heads,but to select the heads in accordance with the remaining energy to prolong the average life span of the sensor network.In addition,the method of increasing the distance threshold is proposed to solve the cluster repeated coverage problem in TEEN routing algorithm,and the resource waste generated by the transmission of repeated data can be reduced accordingly.