CAJ | 학술논문

基于无线传感器网络的储粮害虫声信号采集与监测系统已成为大规模粮仓中害虫监测系统的发展趋势。然而，现有的无线害虫声信号采集系统由于受无线网络带宽资源及采集节点硬件资源的限制，只能计算及传输少量的声信号特征参数，难以实现对大流量声信号的多点分布式采集与完整声信号的实时传输。为此，提出一种基于压缩感知的声信号采集方案。该方案既可以实现储粮害虫声信号特征参数的无线传输，还可根据用户需要将多点采集到的完整音频信号通过无线网络实时地传输至用户端，实现用户对粮仓虫害情况的实时监测。实验结果表明：该方案设计合理，在保证用户端接收信号误差小于0．5％的情况下，可有效地实现储粮害虫声信号的多点分布式采集与声信号的实时可靠传输。
기우무선전감기망락적저량해충성신호채집여감측계통이성위대규모량창중해충감측계통적발전추세。연이，현유적무선해충성신호채집계통유우수무선망락대관자원급채집절점경건자원적한제，지능계산급전수소량적성신호특정삼수，난이실현대대류량성신호적다점분포식채집여완정성신호적실시전수。위차，제출일충기우압축감지적성신호채집방안。해방안기가이실현저량해충성신호특정삼수적무선전수，환가근거용호수요장다점채집도적완정음빈신호통과무선망락실시지전수지용호단，실현용호대량창충해정황적실시감측。실험결과표명：해방안설계합리，재보증용호단접수신호오차소우0．5％적정황하，가유효지실현저량해충성신호적다점분포식채집여성신호적실시가고전수。
Acoustic signal acquisition and monitoring system of stored grain pests based on wireless sensor networks has become a trend in a large-scale granary .However , due to the restrictions of the wireless network bandwidth resources and acquisition node hardware resources the existing wireless acoustic signal acquisition and monitoring system of stored grain pests can hardly achieve multi-point distributed acquisition and real-time reliable transmission of large flow of acoustic signal .For this problem , an acoustic signal acquisition scheme based on compressive sensing had been proposed in this paper , which not only can achieve the calculation and transmission of pests acoustic signal characteristic parameters but also can achieve real-time monitoring of the granary by collecting multi-point and real-time complete pests acoustic sig-nal .The experimental results show that:the proposed method is reasonable and feasible .In the circumstances that signal error is less than 0 .5%in the client side , by using the proposed method multi-point distributed acquisition and real-time reliable transmission of the acoustic signal had been achieved effectively .