用于无线传感器网络的干扰检测方法及其检测装置制造方法及图纸

一种无线传感器网络技术领域的方法和装置，具体是一种用于无线传感器网络的干扰检测方法及其检测装置，该方法通过将接收机对接收到的时域信号进行快速傅里叶变换，得到时域信号的频谱；然后对时域信号的频谱依次进行多音干扰检测和部分频带干扰检测，得到传输信号和干扰信号的频谱X1(n1)、X2(n2)；最后计算传输信号与干扰信号的功率比，当功率比小于干扰阈值则检测判定存在干扰信号。本发明专利技术实现对接收信号进行合理的判断，以便对网络中是否存在干扰做出较为精确的判断。

Interference detection method for wireless sensor network and detection device thereof

A method and a device for the technical field of wireless sensor networks, in particular for interference detection method and device of wireless sensor network, the receiver fast Fourier transform of the signal received by the spectrum and time domain signal; then the frequency spectrum of signal in multi tone interference detection and part band interference detection, spectrum X1 transmission signal and interference signal (N1), X2 (N2); the final power calculation of the transmission signal and interference signal ratio, when the power is less than the interference threshold detection to determine the presence of interference signals. The invention realizes reasonable judgment of the received signal so as to make a more accurate judgment on whether there is interference in the network.

【技术实现步骤摘要】

【技术保护点】
１．一种用于无线传感器网络的干扰检测方法，其特征在于，包括以下步骤：第一步、接收机对接收到的时域信号进行快速傅里叶变换，得到时域信号的频谱；第二步、对时域信号的频谱依次进行多音干扰检测和部分频带干扰检测，得到传输信号和干扰信号的频谱Ｘ１（ｎ１）、Ｘ２（ｎ２）；第三步、计算传输信号与干扰信号的功率比，当功率比小于干扰阈值则检测判定存在干扰信号。

【技术特征摘要】

【专利技术属性】
技术研发人员：朱燕民，姜源，
申请(专利权)人：上海交通大学，
类型：发明
国别省市：31