Wireless Sensor Networks Miniature Multi-sensor System Is Developed

The purpose of this article is to research the multi-sensors system that is based on the Wireless Sensor Networks. It features the accurate collection and analysis of information all around and also the ability to response timely and quickly. On the basis of background of the research project, the article analyzes the characteristic of the multi-sensors system, This thesis particularly discusses the development of data fusion center that fuses information come from sound and infrared and vibra sensors.The DFC belongs to targer-dection level. We choose the decision-making frame and the Dempster-Shafer evidence theory as our DFC's frame. Then we set up the fusion center by SCM. Sensors detect the object and identify the object and conclude the object's identification. We fuse those data in DFC and conlude the final object's identification. This fusion system can enhance the whole dectection systems' rate of identification and improve the dectection whole systems' reliability and reduce the whole dectection systems'uncertainty by experiment.The paper also work over the wireless transmitter and receiver command cells of the multi-sensors system. Making use of RF transmitter IA4220,RF receiver IA4320 that are developed by Integration Corp.grounding on Digtal FSK.Empoldering the chip in software and hardware through set work frequency at 433MHz band.Desgin the principle figure of the electrocircuit,programming plan too and obtain the expected purpose.