Design and Implementation of Multiband Noncontact Temperature-Measuring Microwave Radiometer

Sun, Guangmin; Liu, Jie; Ma, Jingyan; Zhang, Kai; Sun, Zhenlin; Wu, Qiang; Wang, Hao; Liu, Yiming

doi:10.3390/mi12101202

Cited by 9 publications

(8 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Relevant research indicates that the temperature measurement performance of full-power and Dick-type radiometers has encountered bottlenecks [14,15]. In recent years, our team and other scholars have begun to research related radiometer architecture [16][17][18][19]. The architecture's sensitivity can be disregarded when in equilibrium.…”

Section: Quantification Of Uncertainties In Architectural Performance...mentioning

confidence: 99%

Review of Accurate Detection of Human Skin Tissue Temperature Based on Microwave Radiation Method

Wu,

Liu

2024

Preprint

View full text Add to dashboard Cite

Microwave radiation diagnosis technology can detect thermal changes in skin tissue earlier than anatomical changes, but its detection accuracy is limited by non-target radiation interference in the measurement environment, additional measurement errors of system units, and energy scattering and transmission between skin tissues. This paper aims to address the scientific challenges of analyzing the forward and inversion modelling detection mechanism of layered accurate temperature measurement of human skin tissue based on multi-band. The study focuses on the construction of a pencil beam antenna optimization system, the optimization strategy of high-sensitivity correlated radiometer architecture, and the high-precision multi-band forward and inversion modelling detection algorithm. The key technologies include: (1) A new method of integrated modeling and multi-index optimization of antenna with high directivity and small aperture is proposed, and a priori knowledge-guided neural network of pencil beam distribution is constructed to realize the inversion model of antenna structural parameters; (2) The influence mechanism of high sensitivity correlated radiometer architecture error is analyzed, and a periodic phase shift error correction algorithm based on uniform polar circle is designed; (3) Combining deep learning theory and hyper-parameter optimization framework, an iterative model is established, and the objective function modified by the penalty factor is defined to realize a new detection method combining forward and inversion. This paper presents a theoretical foundation for the industrialization of microwave radiation diagnostic technology.

show abstract

Section: Quantification Of Uncertainties In Architectural Performance...mentioning

confidence: 99%

Review of Accurate Detection of Human Skin Tissue Temperature Based on Microwave Radiation Method

Wu,

Liu

2024

Preprint

View full text Add to dashboard Cite

show abstract

Section: Quantification Of Uncertainties In Architectural Performance...mentioning

confidence: 99%

Review of Accurate Detection of Human Skin Tissue Temperature Based on Microwave Radiation Method

Wu,

Liu

2024

Preprint

View full text Add to dashboard Cite

Microwave radiation diagnosis technology can detect thermal changes in skin tissue earlier than anatomical changes, but its detection accuracy is limited by non-target radiation interference in the measurement environment, additional measurement errors of system units, and energy scattering and transmission between skin tissues. This paper aims to address the scientific challenges of analyzing the forward and inversion modelling detection mechanism of layered accurate temperature measurement of human skin tissue based on multi-band. The study focuses on the construction of a pencil beam antenna optimization system, the optimization strategy of high-sensitivity correlated radiometer architecture, and the high-precision multi-band forward and inversion modelling detection algorithm. The key technologies include: (1) A new method of integrated modeling and multi-index optimization of antenna with high directivity and small aperture is proposed, and a priori knowledge-guided neural network of pencil beam distribution is constructed to realize the inversion model of antenna structural parameters; (2) The influence mechanism of high sensitivity correlated radiometer architecture error is analyzed, and a periodic phase shift error correction algorithm based on uniform polar circle is designed; (3) Combining deep learning theory and hyperparameter optimization framework, an iterative model is established, and the objective function modified by the penalty factor is defined to realize a new detection method combining forward and inversion. This paper presents a theoretical foundation for the industrialization of microwave radiation diagnostic technology.

show abstract

“…Microwave radiometer has been widely used in astronomical observation [1], atmospheric remote sensing [2], security sensing [3,4], temperature measurement [5], and other scenarios. Since body temperature is one of the vital signs of the human body and an important indicator to measure the condition of the body, the accurate detection of human body temperature can assist doctors to diagnose and treat patients faster.…”

Section: Introductionmentioning

confidence: 99%

Design of a Compact Analog Complex Correlator for Millimeter-Wave Radiation Temperature Measurement System

Dong

et al. 2023

Micromachines

View full text Add to dashboard Cite

Human body temperature is a fundamental physiological sign that reflects the state of physical health. It is important to achieve high-accuracy detection for non-contact human body temperature measurement. In this article, a Ka band (32 to 36 GHz) analog complex correlator using the integrated six-port chip is proposed, and a millimeter-wave thermometer system based on the designed correlator is completed for human body temperature measurement. The designed correlator utilizes the six-port technique to achieve large bandwidth and high sensitivity, and miniaturization of the correlator is achieved through an integrated six-port chip. By performing the single-frequency test and the broadband noise measurement on the correlator, we can determine that the dynamic range of input power of the correlator is −70 dBm to −35 dBm, and the correlation efficiency and equivalent bandwidth are 92.5% and 3.42 GHz, respectively. Moreover, the output of the correlator varies linearly with the input noise power, which reveals that the designed correlator is suitable for the field of human body temperature measurement. Then, a handheld thermometer system, with a size of 140 mm × 47 mm × 20 mm, is proposed using the designed correlator, and the measurement results show that the temperature sensitivity of the thermometer is less than 0.2 K.

show abstract

Design and Implementation of Multiband Noncontact Temperature-Measuring Microwave Radiometer

Cited by 9 publications

References 21 publications

Review of Accurate Detection of Human Skin Tissue Temperature Based on Microwave Radiation Method

Review of Accurate Detection of Human Skin Tissue Temperature Based on Microwave Radiation Method

Review of Accurate Detection of Human Skin Tissue Temperature Based on Microwave Radiation Method

Design of a Compact Analog Complex Correlator for Millimeter-Wave Radiation Temperature Measurement System

Contact Info

Product

Resources

About