Wireless Temperature Monitoring With Shape Memory Alloy-Based Antenna
Wireless Temperature Monitoring With Shape Memory Alloy-Based Antenna
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DOI：
10.1109/lawp.2020.3048884
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发表时间：
2021-03
影响因子：
4.2
通讯作者：
Wei Wang;Wenxin Zeng;Aydin Sadeqi;S. Sonkusale
中科院分区：
文献类型：
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作者：
Wei Wang;Wenxin Zeng;Aydin Sadeqi;S. Sonkusale
在诸如药品、鱼/家禽和其他对温度敏感的物品等易碎物品的运输和管理中，对温度的经济感知和记录非常重要。现有的方法使用运行在连续电源上的电子设备来测量整个温度分布。这封信提供了一种简单、智能和无电池的解决方案，可以使用形状记忆合金(SMA)的自然热机械状态来捕获有趣的温度事件。我们的方法利用了形状记忆合金的温度变化引起的不可逆构型，这提供了一种自然的能力来捕捉温度历史，而不需要电子数据记录。在这封信中，SMA被用来记录阈值温度违规事件。显示了一个原型天线，用于监测30$^\circ$C的温度，并显示$\pm$1$^\circ$C错误。在有无温度破坏的情况下，观察到频率响应的差异为17分贝。为了验证所提方法的有效性，已经进行了详细的设计和实验研究。
Economical sensing and recording of temperature are important in the transportation and management of fragile goods such as medicine, fish/poultry, and other temperature-sensitive items. Existing approaches measure the entire temperature profile using electronic devices running on a continuous power source. This letter presents a simple, intelligent, and battery-free solution for capturing interesting temperature events using the natural thermo-mechanical state of a shape memory alloy (SMA). Our approach utilizes the temperature variation induced irreversible configuration of SMA, which provides a natural ability to capture the temperature history without the need for electronic data logging. In this letter, SMA is used to record the threshold temperature violation event. A prototype antenna is shown to monitor the temperature at 30 $^\circ$C with a $\pm$1 $^\circ$C error. A difference of 17 dB in frequency response was observed with and without temperature violation. Detailed design and experimental studies have been performed to validate the proposed approach.