Method and system for detecting vital signs of moving target

A technology of vital signs and detection methods, applied in the field of communication, which can solve problems such as complex operation, increase patient pain, limit application scenarios, etc., and achieve the effect of ensuring privacy and pleasant experience

Pending Publication Date: 2022-04-29
WUHAN FENGHUO KAIZHUO TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This sensor method of direct contact with the test object can certainly detect information accurately and is absolutely authoritative, but for patients with severe burns, on the one hand, contact equipment will increase the pain of the patient, on the other hand, it is easy to cause secondary infection; For normal household sign monitoring, especially for the elderly, the operation of wearing contact devices is complicated, and on the other hand, it may affect the normal actions and life of the elderly.
[0004] At present, the non-contact vital sign detection method still has many limitations, requiring the tester to remain still and sitting on a chair or lying on the bed, with the chest facing the sensor device, these defects limit its application scenarios
At the same time, for the detection of heart rate, some methods try to estimate the heart rate directly using frequency analysis and band-pass filter (BPF). However, due to the harmonics introduced by breathing, it is easy to pick up wrong peaks for estimation

Method used

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  • Method and system for detecting vital signs of moving target
  • Method and system for detecting vital signs of moving target
  • Method and system for detecting vital signs of moving target

Examples

Experimental program
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Effect test

Embodiment 1

[0053] A kind of vital sign detection method of moving target, see figure 1 , the vital signs detection method mainly includes the following steps:

[0054] S1, transmit chirp signals with different slope frequencies based on MIMO technology, and obtain multiple sets of signal data with different distance resolutions.

[0055] As an embodiment, the transmitting chirp signals with different configuration slope frequencies based on MIMO technology, and obtaining multiple sets of signal data with different distance resolutions includes: configuring the multi-transmit and multi-receive mode of the millimeter wave module based on MIMO technology, and using a virtual antenna array to obtain multiple Set of signal data with different range resolutions.

[0056]Specifically, the millimeter-wave module used in the embodiment of the present invention supports an antenna mode of 3 transmissions and 4 receptions. Using MIMO technology, the obtained signal data is 3×4=12 sets of data, and...

Embodiment 2

[0087] A vital sign detection system for a moving target, see Figure 4 , the vital sign detection system includes an acquisition module 401 , an extraction module 402 , a decomposition module 403 and an estimation module 404 .

[0088] Wherein, the acquisition module 401 is used to transmit chirp signals with different configuration slope frequencies based on MIMO technology, and acquire multiple sets of signal data with different range resolutions; and acquire target distance information based on the multiple sets of signal data with different range resolutions; The extraction module 402 is used to extract the target phase signal from the target distance information; the decomposition module 403 is used to decompose the target phase signal based on the mode decomposition algorithm to obtain the heartbeat signal and breathing signal of the target; the estimation module 404 , for estimating the target heart rate and respiration rate based on the target's heartbeat signal and r...

Embodiment 3

[0091] see Figure 5 , Figure 5 It is a schematic diagram of an embodiment of an electronic device provided by an embodiment of the present invention. Such as Figure 5 As shown, the embodiment of the present invention provides an electronic device 500, including a memory 510, a processor 520, and a computer program 511 stored in the memory 510 and operable on the processor 520. When the processor 520 executes the computer program 511, it realizes The following steps: transmit chirp signals with different configuration slope frequencies based on MIMO technology, and obtain multiple groups of signal data with different distance resolutions; based on the multiple groups of signal data with different distance resolutions, obtain target distance information; from the target distance information extract the target phase signal; based on the mode decomposition algorithm, decompose the target's heartbeat signal and respiratory signal from the target phase signal; estimate the targ...

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Abstract

The invention provides a vital sign detection method and system for a moving target, and the method comprises the steps: transmitting chirp signals with different configuration slope frequencies based on an MIMO technology, and obtaining a plurality of groups of signal data with different distance resolutions; obtaining target distance information, and extracting a target phase signal; and based on a modal decomposition algorithm, decomposing the target phase signal to obtain a heartbeat signal and a breathing signal of the target, and estimating the heart rate and the breathing frequency of the target. According to the invention, non-contact millimeter wave radar detection is used, the respiratory rate and the heart rate of a moving target are detected, and compared with wearing type and contact type equipment, the privacy is ensured, and meanwhile, a pleasant experience is brought to a user; compared with other traditional non-contact vital sign monitoring methods, the method has the advantages that the monitored person does not need to sit on a chair or lie on a bed to enable the chest to face the radar equipment, normal activity of the target in the monitoring area is supported, and monitoring of vital signs is achieved.

Description

technical field [0001] The present invention relates to the communication field, and more specifically, to a method and system for detecting vital signs of a moving target. Background technique [0002] At present, with the rapid development of electronic hardware technology, network communication technology and Internet of Things technology, more and more applications have been launched in the fields of smart buildings, factories and automobiles to facilitate people's lives. Among them, vital sign information is an important indicator and important parameter for monitoring in modern health care and medical applications, such as heartbeat and respiration. Medical applications provide reliable basis for diagnosis and treatment. For example: disease prevention of apnea, monitoring of nursing homes, monitoring of drivers' health and fatigue. [0003] Traditional vital sign detection methods mainly use contact wearable sensors or adhesive electrodes to directly monitor heartbe...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): A61B5/0205A61B5/0507A61B5/00
CPCA61B5/0205A61B5/7257A61B5/0507A61B5/7203A61B5/024A61B5/0816
Inventor彭凯桂宾徐晓慧李震杨艺安美晨李志康
OwnerWUHAN FENGHUO KAIZHUO TECH CO LTD