基于 CC1101的无线传感器网络设计

摘要

A wireless sensor network with star topology is designed based on CC1101 and GPRS.The flooding time synchronisation proto-col (FTSP)based on time division multiple access (TDMA)mechanism is adopted for the synchronisation of sink node and sensor nodes.In this system,sink node and sensor nodes get synchronised in the first slot of every TDMA frame with FTSP,which in turn ensures the imple-mentation of TDMA mechanism.Meanwhile,by accessing the Internet through the GPRS network,the sink node sends the monitored data of-fered by sensor nodes to the monitoring centre.Test results in real environment show that the designed wireless sensor network can achieve re-liable synchronisation and data transmission of the nodes.%设计基于 CC1101与 GPRS 的星型无线传感器网络系统，应用基于时分多址 TDMA（Time Division Multiple Access）机制的洪泛时间同步协议 FTSP（Flooding Time Synchronization Protocol）实现汇聚节点与传感器节点的同步。在该系统中，汇聚节点与传感器节点在 TD-MA 帧的第一时隙采用 FTSP 进行时间同步，进而保障 TDMA 机制的实现。同时，汇聚节点通过 GPRS 网络接入 Internet，将传感器节点的监测数据转发至监控中心。实际环境中的测试结果表明，设计的无线传感器网络能实现节点的可靠同步与数据传输。