温度监测系统中传感器网络和RFID 半无源标签的硬件动态行为评估

摘要

For the issue that traditional low temperature monitoring systems tend to ignore the dynamic behavior characteristics of hardware, a dynamic behavior characteristic assessing method based on wireless sensor networks (WSN) and semi-passive tags of radio frequency identification ( RFID) is proposed.Thus, the aim is to evaluate the sensors dynamic behavior.The experimental test temperature is freezer temperature (5℃), room temperature (23℃) and greenhouse temperature (35℃).And three dif-ferent sensor configurations WSN motes particles and four kinds of RFID tags ( packaged or not packaged) were compared.In or-der to assess the hardware dynamic range of the sensor response, first-order response of the sensor is logarithmically and nonlin-early fitted.Experimental results show that the temperature sensor packages containing wireless and RFID nodes will affect the dy-namic response, and its properties can monitor fast temperature changes, ensuring the normal operation of the cold chain system.%针对传统的低温监控系统容易忽略硬件动态行为特性的问题，提出一种基于无线传感器网络（ Wireless Sensor Net-work， WSN）和射频识别（ Radio Frequency Identification， RFID）半无源标签的动态行为评估方法。实验的测试温度有冷冻室温度（5℃）、室内温度（23℃）和温室温度（35℃），并对3种不同传感器配置的WSN尘粒和4种RFID标签（封装或不封装）进行比较。为了评估硬件的动态范围，对传感器一阶响应进行对数和非线性拟合。实验结果显示，含有无线和RFID节点的温度传感器封装方式会影响其动态响应，其特性可以监控高速变化的温度，保证低温运输系统的正常运行。