A Algorithm CSMA/CA Mechanism Used in Bridge Monitoring Network

For long transmission delay of emergency high priority node and low node energy consumption utilization ratio in on– line Management & Monitoring System of CPU exposed in field testing at the airport, energy optimization mechanism based on priority scheduling approach is adopted to adjust the parameters of CSMA/CA algorithm on MAC layer protocol of wireless sensor network, can deal with the above issues and achieve the target of fast data transmission. At last, NS2 is applied to simulate network. The experimental result shows that the access rates of high priority node is improved, network consumption is balanced and the network life cycle is extended.