Abstract:Due to the limited energy and computing ability in wireless sensor networks, almost all traditional intrusion detection schemes cannot be applied efficiently．This paper proposes a hierarchical Adaboost intrusion detection algorithm that improved the accuracy and timeliness of detection by enlarging weight variation and seeking optimum grader. A binary tree is adopted to solve the multiple classification problem of detection. The data acquisition and transmission protocol for the intrusion detective system has been put forward, and thus solved the problem of excessive communications cost resulting from the hierarchical structure. Besides, the standards for evaluating the performance of wiriness sensor network intrusion detect system are also proposed in this paper. Theory analysis and simulation results show that the proposed scheme is of high accuracy and timeliness. Data acquisition transfer protocol can be efficiently cutting down the consuming energy of detection nodes, it can be use of in different wireless sensor networks.