Vital sign detection device, method and system

A technology for vital signs and detection devices, applied in the information field, can solve the problems of low wearing comfort and frequent charging, and achieve the effect of high detection accuracy

Pending Publication Date: 2021-03-05
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the promotion and application of wearable devices are facing problems such as low wearing comfort and frequent charging.

Method used

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  • Vital sign detection device, method and system
  • Vital sign detection device, method and system
  • Vital sign detection device, method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] This embodiment provides a detection device for vital signs, figure 1 It is a schematic diagram of the vital sign detection device according to Embodiment 1 of the present invention. like figure 1 As shown, the vital sign detection device 100 includes:

[0034] A first calculating unit 101, which is used to calculate the time-varying phase distribution of the distance Fast Fourier Transform (FFT) signal of the position of the living body according to the reflection signal of the microwave radar within the first preset time range;

[0035] Unfolding unit 102, which is used for phase unwrapping the phase distribution;

[0036] The first determination unit 103 is configured to determine all local extremum points of the phase distribution after phase unwrapping according to a preset time window, and the time window is determined according to the cycle range of the breathing or heartbeat of the living body;

[0037] A homogenization unit 104, which is used to homogenize t...

Embodiment 2

[0102] The embodiment of the present invention also provides an electronic device, Figure 13 It is a schematic diagram of the electronic device of Embodiment 2 of the present invention. like Figure 13 As shown, the electronic device 1300 includes a vital sign detection device 1301, wherein the structure and function of the vital sign detection device 1301 are the same as those described in Embodiment 1, and will not be repeated here.

[0103] Figure 14 It is a schematic block diagram of the system configuration of the electronic device according to Embodiment 2 of the present invention. like Figure 14 As shown, the electronic device 1400 may include a central processing unit 1401 and a memory 1402; the memory 1402 is coupled to the central processing unit 1401. This diagram is exemplary; other types of structures may also be used, in addition to or in place of this structure, for telecommunications or other functions.

[0104] like Figure 14 As shown, the electronic...

Embodiment 3

[0118] The embodiment of the present invention also provides a vital sign detection system, which includes a microwave radar and a vital sign detection device. The structure and function of the vital sign detection device are the same as those described in Embodiment 1, and the specific content will not be repeated. illustrate.

[0119] Figure 15 It is a schematic diagram of the detection system of vital signs in Embodiment 3 of the present invention, such as Figure 15 As shown, the vital sign detection system 1500 includes:

[0120] Microwave radar 1510, which has a signal transmitting unit 1511 and a signal receiving unit 1512, the signal transmitting unit 1511 transmits microwave signals to the space where the living body is located, and the signal receiving unit 1512 receives the reflected signal; and

[0121] The vital sign detecting device 1520 detects the vital sign according to the reflected signal.

[0122] For example, microwave radar 1510 is a microwave radar w...

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PUM

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Abstract

The embodiment of the invention provides a vital sign detection device, method and system. The device comprises a first calculation unit, an unwrapping unit, a first determining unit, a homogenizationunit and a second calculation unit, wherein the first calculation unit calculates the time-varying phase distribution of a distance FFT signal of a position where a living body is located according to a reflection signal of a microwave radar in a first preset time range; the unwrapping unit is used for performing phase unwrapping on the phase distribution; the first determining unit is used for determining all local extreme points of the phase distribution subjected to phase unwrapping according to a preset time window, wherein the time window is determined according to the period range of respiration or heartbeat of the living body; the homogenization unit is used for performing amplitude homogenization processing on the phase distribution between each pair of adjacent local extreme points; and the second calculation unit is used for calculating the frequency of respiration or heartbeat of the living according to the phase distribution subjected to the amplitude homogenization processing.

Description

technical field [0001] The present invention relates to the field of information technology. Background technique [0002] Monitoring vital signs such as breathing and heartbeat helps to understand the physical health of the human body. In medicine, people use professional medical equipment such as electrocardiogram detectors and stethoscopes to obtain patient breathing and heartbeat information. With the advancement of technology, a large number of wearable devices have appeared; people can monitor changes in their body indicators all the time in their daily life by using devices such as smart watches and smart bracelets. However, the promotion and application of wearable devices are facing problems such as low wearing comfort and frequent charging. [0003] In recent years, there have been non-contact vital sign detection methods, such as microwave radar-based vital sign detection methods, which use microwave radar to collect microwave signals reflected by the detection ...

Claims

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Application Information

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IPC IPC(8): A61B5/0205A61B5/0507
CPCA61B5/0205A61B5/7225A61B5/7257A61B5/7203A61B5/0507
Inventor 李红春谢莉莉赵倩田军
Owner FUJITSU LTD
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