针对目前基于周期性分簇的同步协议需时间同步、不适应于事件驱动下的传感器网络的问题,提出了一种事件驱动下支持服务质量(QoS)的异步分簇协议,其核心是事件产生时能够保证实时可靠传输,网络分簇按照某一分簇概率异步进行,该概率由簇头的数据传输速率和剩余能量共同决定;无需时间同步,且采用混合式的簇构造算法来选举新簇头.仿真实验结果表明:该协议保证了敏感数据的实时传输,降低了丢包率,并有效地均衡了节点的能量消耗,延长了网络存活期. Aiming at the problem that the periodic synchronization based on periodic clustering needs time synchronization and is not suitable for event-driven sensor networks, an event-driven asynchronous clustering protocol supporting Quality of Service (QoS) is proposed. The core of the algorithm is event generation Can guarantee the real-time and reliable transmission. The network clustering is carried out asynchronously according to some clustering probability, which is decided by the data transmission rate of the cluster head and the residual energy. Without the time synchronization, the hybrid clustering algorithm is used to select the new cluster The simulation results show that this protocol guarantees the real-time transmission of sensitive data, reduces the packet loss rate, effectively balances the node’s energy consumption and prolongs the network lifetime.