基于压缩感知的无线粮虫声信号采集方案

发布时间：2018-01-11 15:33

本文关键词：基于压缩感知的无线粮虫声信号采集方案　出处：《农机化研究》2014年05期 　论文类型：期刊论文

【摘要】：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。
[Abstract]:The acoustic signal acquisition and monitoring system of stored grain pests based on wireless sensor network (WSN) has become the development trend of pest monitoring system in large-scale granaries. The existing wireless pest acoustic signal acquisition system can only calculate and transmit a small number of acoustic signal characteristic parameters due to the limitation of wireless network bandwidth resources and acquisition node hardware resources. It is difficult to realize the multi-point distributed acquisition and the real-time transmission of the complete sound signal. An acoustic signal acquisition scheme based on compressed sensing is proposed, which can realize wireless transmission of acoustic signal characteristic parameters of stored grain pests. According to the needs of users, the complete audio signals collected from multiple points can be transmitted to the user through wireless network in real time, which can realize the real-time monitoring of the situation of granary pests. The experimental results show that the design of the scheme is reasonable. Under the condition that the error of receiving signal is less than 0.5%, the multi-point distributed acquisition of sound signal of stored grain pests and the real-time and reliable transmission of sound signal can be realized effectively.
【作者单位】：中国计量学院电工与电子技术研究所;
【基金】：浙江省自然科学基金项目(R1100015)
【分类号】：TP274.2;TP212.9;TN929.5
【正文快照】： 0引言储粮害虫对粮食的侵害是造成粮食损失的重要因素。联合国粮农组织调查显示,世界每年因粮仓中储粮害虫造成的粮食损失约为5%。如何通过科学的手段对储粮害虫进行早期防治是科学保粮的重要内容。随着计算机技术的广泛应用与声学技术的快速发展,储粮害虫声检测技术[1]成为粮

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