传感网络中高精度滤波器设计  

Design of high precision filter in sensing network

作　　者：王刚[1] 

机构地区：[1]四川信息职业技术学院电气工程系,四川广元628017

出　　处：《现代电子技术》2015年第22期65-68,共4页Modern Electronics Technique

基　　金：四川省教育厅主办:基于广元工业园区自动化设备技术服务移动平台的开发(15ZB0470)

摘　　要：传感网络中外部信号干扰与传感信号的同质化日趋严重,设计可区分两者信号的传感网络滤波器成为研究的热点。设计一种高精度有源滤波器系统,该系统包括电源模块、两个DSP控制模块、信号采集与调整模块、驱动模块和显示模块。分析并联型有源滤波器的运行原理,采用CCS2.0设计传感网络中有源滤波器系统软件,详细描述了系统软件开发模型,给出了滤波器中的部分C语言代码。实验结果表明,所设计滤波器在传感网络电压畸变及负载突变情况下,能够较好地完成谐波抑制,具有较强的应用性。Since the homogenization of the external signal interference and sensing signal in sensing network is increasingly serious, the design of sensing network filter which can distinguish the two signals has become the research focus. A high precision active filter system was designed, which includes power module, two DSP control modules, signal acquisition and adjustment module, drive module and display module. The operating principle of the parallel active filter was analyzed, and the system software of the active filter in sensing network was designed with CCS2.0. The development model of system software is de- scribed in detail. The partial C language code in the filter is provided. The experimental results indicate that the designed filter can better accomplish harmonic suppression under the conditions of voltage distortion＇ and load sudden changing in sensor network, and has strong applicability.

关 键 词：传感网络 高精度滤波器 有源滤波器 软件开发模型 

分 类 号：TN710-34[电子电信—电路与系统] TP391.4[自动化与计算机技术—计算机应用技术]