用于WSNs目标探测的传感模块设计

摘要

A sensor module for wireless sensor networks (WSNs) target detection is introduced. Its hardware and software design and algorithm are described. This design is mainly composed of sensor unit, microprocessor unit and RF communications unit. The vibration, sound and temperature sensors signal of external target are collected in the sensor unit. In the microprocessor unit,the data is pretreated in DSP and the signal feature is obtained. In RF communications unit,the value of the signal feature is transferred to PC through WSNs. Experiments show that this design has a good stability and reproducibility, and can be used in a variety of environments to detect targets.%介绍了一种用于无线传感器网络(WSNs)中进行目标探测的传感器模块,描述了它的软硬件设计与数据处理的算法.该设计主要包括传感器单元、微处理器单元和射频通信单元.在传感器单元中对于外界目标的振动、声音和温度传感器信号进行了采集.在微处理器单元中使用数字信号处理对数据进行预处理并取得信号的特征值.在射频通信单元中将特征值通过WSNs传输到上位机.实验证明:该模块具有良好的稳定性和重复性,可以用于多种环境下的目标探测.