麻省理工学院（MIT）的工程师团队研发出一款尺寸仅为6×4毫米的可吞咽温度传感器，能够持续监测人体核心体温1。该设备的电路可集成在1平方毫米的硅芯片上，基于漏电流振荡器原理运行，温度检测精度达0.01°C1。此项技术有望用于感染监测、麻醉观察、儿童发烧追踪及极端环境人员体温监控1。
在供电与通信设计上，该传感器使用1.55伏纽扣电池供电，并采用反向散射策略将大部分功耗转移至体外天线1。设备发射超高频无线电波，并由传感器内天线调制后回传1。该论文第一作者为前MIT博士后、现剑桥大学的Saransh Sharma，资深作者为MIT机械工程副教授Giovanni Traverso和MIT教务长Anantha Chandrakasan1。
Engineers at the Massachusetts Institute of Technology (MIT) have developed a swallowable temperature sensor measuring just 6 by 4 millimeters, designed to continuously monitor core body temperature 1. The device's circuit can be integrated onto a one-square-millimeter silicon chip and achieves a temperature detection accuracy of 0.01°C 1. It operates based on the principle of a leakage current oscillator and is powered by a 1.55-volt coin cell battery 1.
To manage power efficiently, the sensor employs a backscattering strategy that shifts the majority of power consumption to an external antenna 1. It transmits ultra-high frequency radio waves, which are modulated by an internal antenna within the sensor and reflected back 1. The research was led by first author Saransh Sharma, a former MIT postdoctoral researcher currently at Cambridge University, alongside senior authors Giovanni Traverso, an associate professor of mechanical engineering at MIT, and Anantha Chandrakasan, the provost of MIT 1.
The swallowable device is expected to be utilized for infection monitoring, anesthesia observation, and tracking fevers in children 1. Additionally, it could be applied to monitor the body temperature of personnel operating in extreme environments 1.
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