The cold chain transportation system monitored with wireless sensor network can realize the products real-time tracking and quality control. The traditional monitoring system needs the transport vehicle to transmit its sensor data to the con-trol center in real time,which may cause the overload of data link and communication system,and decrease the data acquisition and transmission efficiency. The purpose of this study is aimed to design a wireless sensor network monitoring system for cold chain transportation. The compressed sensing technology is used to lower the data sampling rate effectively to reduce the system pressure. The test results show this system can recover the data collected by sensor accurately and efficiently,feed back the tem-perature variation situation of goods in each link of the cold chain in real time,which provides the effective administration and security assurance for goods transport.%基于无线传感器网络监控的冷链运输系统可实现产品实时跟踪和质量管理.传统监测系统需要运输车辆将其传感器数据实时传输到控管中心,可能导致数据链路和通信系统超载,反而减少数据采集和传输效率.本研究旨在为冷链运输设计一套无线传感器网络监控系统,使用压缩感知技术有效降低数据采样率以减少系统压力.测试结果表明,该系统能够准确、高效地恢复传感器采集的数据,实时反馈货物在冷链各个环节的温度变化情况,为货物的运输提供有效监管和安全保证.
展开▼
