(In this paper, the topology of star wireless sensor network is introduced in detail, and the sensor node composed of temperature sensor DS18B20, single chip AT89LV51 and PTR8000 is given. The hardware approach of the node is also composed of embedded general manager S3C2410, single chip AT89LV51 and wireless module PTR8000. The convergence node. Point hardware approach; in the design of the software system)