Method for detecting vital signs in non-contact mode by terahertz waves

A vital sign, non-contact technology used in the field of electronic medicine

Inactive Publication Date: 2015-03-25
SHANGHAI RADIO EQUIP RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the micro-Doppler phenomenon of terahertz waves is extremely obvious, and has not yet received attention and application

Method used

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  • Method for detecting vital signs in non-contact mode by terahertz waves
  • Method for detecting vital signs in non-contact mode by terahertz waves
  • Method for detecting vital signs in non-contact mode by terahertz waves

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Embodiment Construction

[0087] The present invention will be further elaborated below by describing a preferred specific embodiment in detail in conjunction with the accompanying drawings.

[0088] Such as figure 1 As shown, a system for non-contact detection of vital signs using terahertz waves, the system includes: a first frequency synthesizer 1, a transmitting frequency multiplication link component, a transmitting antenna 3, a receiving antenna 4, and a second frequency synthesizer 5. The local oscillator generating unit 6 at the receiving end, the first mixer 7 , the second mixer 8 , the intermediate frequency local oscillator generating unit 9 and the signal processing unit 10 .

[0089] In this embodiment, semiconductor solid-state sources are used as the first frequency synthesizer 1 and the second frequency synthesizer 5 respectively. Using a semiconductor solid-state source combined with a transmitting frequency multiplication link component and a receiving end local oscillator generating...

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Abstract

The invention discloses a method for detecting vital signs in a non-contact mode by terahertz waves. The method comprises the steps that a system for detecting the vital signs in the non-contact mode by the terahertz waves is arranged, a transmitting antenna and a receiving antenna of the system are arranged at the equidistant positions of a detected life body, and the detection signals of the detected life body are sampled; after time-frequency transformation is conducted on the sampled detection signals twice, the movement frequency signals, the respiration signals and the heartbeat signals of the detected life body are extracted after time weighting is conducted. According to the method for detecting the vital signs in the non-contact mode by the terahertz waves, the detection sensitivity is higher than that of microwave detection in the prior art, and meanwhile the vital sign data obtained by detection through the method are more precise and accurate. The method can be widely applied to the fields of medicine, rescuing, security and the like, for example, non-contact heartbeat monitoring, automatic personal health detection, chronic health condition diagnosis and even personnel searching in earthquakes or snow crashes can be achieved.

Description

technical field [0001] The invention relates to the technical field of electronic medicine, in particular to a detection method for non-contact detection of vital signs by using terahertz waves. Background technique [0002] At present, a large number of researches in the field of terahertz biomedicine at home and abroad mainly focus on spectrum analysis and medical imaging. However, the micro-Doppler phenomenon of terahertz waves is extremely obvious, and has not yet been paid attention to and applied. The micro-Doppler phenomenon means that while the target is moving in the radial direction of the radar, the vibration or rotation of the target or target components will produce a broadening modulation on the spectrum of the radar echo, and produce sidebands at the target Doppler frequency. Micro-Doppler phenomenon is ubiquitous in nature, such as human heartbeat, respiration, swing of pedestrian's hands and legs, etc. Using terahertz waves to extract vital signs is the de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0205
CPCA61B5/0205A61B5/0004A61B5/1118A61B5/4842
Inventor 蒋俊涂建
Owner SHANGHAI RADIO EQUIP RES INST
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