摘要
目前人体测温主要以红外测温和水银体温计为主,其仅能测量人体表皮温度,针对此现状,以微波辐射测温理论为依据,提出一种中心频率为1.4 GHz的微波辐射计系统,并利用目前消费类电子产品的MMIC芯片设计制作完成。系统硬件模块主要包括高增益放大器模块、带通滤波器模块和平方律检波模块。根据不同温度状态下人体皮下组织的辐射能量,系统测得最终输出电压与温度呈正相关,能够很好地响应皮下温度变化。研究结果表明,基于现有消费类电子产品的芯片可以制作出成本较低的L波段微波辐射计,能跟踪组织层的温度,验证了监测人体内部温度的可行性。
At present,the human body temperature measurement is mainly based on infrared temperature measurement and mercury thermometer,which can only measure the human skin temperature,in view of this situation,based on the theory of microwave radiation temperature measurement,a microwave radiometer system with a central frequency of 1.4 GHz is proposed,and the MMIC chip design of current consumer electronics products is used to complete the production.The system hardware module mainly includes a high-gain am-plifier module,a band-pass filter module and a square law detection module.According to the radiation energy of the human subcutane-ous tissue under different temperature conditions,the measured final output voltage is positively correlated with the temperature,which can respond well to the subcutaneous temperature change.The results show that a low-cost L-band microwave radiometer can be made based on existing consumer electronics chips,which can track the temperature of the tissue layer,verifying the feasibility of monitoring the internal temperature of the human body.
作者
鲁栋
丰励
凃玲英
LU Dong;FENG Li;TU Lingying(Hubei Key Laboratory for High-Efficiency Utilization of Solar Energy and Operation Control of Energy Storage System,Hubei University of Technology,Wuhan Hubei 430068,China;School of Electrical and Electronic Engineering,Hubei University of Technology,Wuhan Hubei 430068,China)
出处
《电子器件》
CAS
2024年第1期96-103,共8页
Chinese Journal of Electron Devices
基金
国家自然科学基金资助项目(41601399)
博士科研启动基金(BSQD2020011)
太阳能高效利用及储能运行控制湖北省重点实验室开放基金项目(HBSEES202007)。
关键词
微波辐射计
可行性研究
皮下测温
平方律检波器
microwave radiometer
feasibility studies
subcutaneous thermometry
square law detector
