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Millimeter wave radar device, method and system for vital sign monitoring

A technology of millimeter-wave radar and vital signs, which is applied in telemetry patient monitoring, pulse rate/heart rate measurement, diagnostic recording/measurement, etc. It can solve problems such as high cost, difficulty in transmitting and receiving isolation, and poor versatility, so as to avoid secondary Injury, discomfort reduction, small output power effect

Inactive Publication Date: 2021-03-12
山东润一智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, a variety of vital sign monitoring technologies have been applied in medical care, elderly care, infant care and other fields; for example, in medical testing for hospitals, polysomnography can monitor electrocardiogram, electromyography Physiological signals of multiple channels such as eye movement graph; however, this analyzer needs to be operated by specialized medical staff, which is not only costly, but also cannot be used only for diagnosing a small number of patients with serious conditions, and its versatility is poor
[0004] Or, in family-oriented health monitoring, the elderly or infants can be observed remotely by installing monitoring equipment such as cameras, but the acquired video image information cannot intelligently detect physiological signals such as human breathing, and cannot correctly judge the status of vital signs
[0005] In addition, the traditional continuous wave radar system is sensitive to the speed information of the target, but not sensitive to the distance information of the target. The continuous emission of electromagnetic waves makes it difficult to isolate the transmission and reception, which makes it impossible to greatly improve its anti-interference ability and target information. Extraction ability; and continuous wave radar is prone to signal leakage, the transmitter's transmission signal and its noise directly leak to the receiver, increasing the difficulty of extracting target feature information

Method used

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  • Millimeter wave radar device, method and system for vital sign monitoring
  • Millimeter wave radar device, method and system for vital sign monitoring
  • Millimeter wave radar device, method and system for vital sign monitoring

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Experimental program
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Embodiment 1

[0035] This embodiment is based on the FMCW radar system to realize the detection of the electrocardiographic signal (ECG) of the human body, and obtain the breathing and heart rate parameters of the vital signs of the human body. The millimeter wave radar is the radar that works in the millimeter wave frequency band. -10mm electromagnetic wave, the corresponding frequency range is 30-300GHz; the working frequency of the millimeter-wave radar device is 77-81GHZ, and the maximum bandwidth that can be achieved is 4GHz, which can provide centimeter-level distance resolution, and the higher the frequency, the shorter the wavelength , the higher the resolution and accuracy; the radar transmission power complies with FCC regulations, the maximum EIRP transmission power is 21dBm, and the radiation produced will not cause harm to the human body.

[0036] This embodiment provides a millimeter-wave radar device for monitoring vital signs, including: a power supply module, a millimeter-wa...

Embodiment 2

[0045] This embodiment provides a vital sign monitoring method based on the millimeter-wave radar device for vital sign monitoring described in Embodiment 1. Through the FMCW radar system, the radar echo reflected by the surface of the human body is obtained, and the target point per unit time The calculation of distance information and micro-movement information changes on the surface of the human body realizes the detection of the ECG signal of the human body.

[0046]In the FMCW radar system, the FMCW radar system transmits a chirp signal and captures the signal reflected by objects in its transmission path, such as figure 1 Shown is a simplified block diagram of the main RF components of an FMCW radar, which operates as follows:

[0047] (1) The synthesizer generates a chirp;

[0048] (2) The chirp is transmitted by the transmitting antenna (TX antenna);

[0049] (3) reflection of the chirp by the object generates a reflected chirp captured by the receiving antenna (RX a...

Embodiment 3

[0073] This embodiment provides a vital sign monitoring system, including a millimeter-wave radar device and a cloud server, and the millimeter-wave radar device communicates with the cloud server through a wireless communication module; Figure 4 as shown,

[0074] In this implementation, the mobile terminal is used to configure the WIFI network, such as Figure 5 As shown, the main workflow of WIFI distribution network includes:

[0075] (1) The device enters the initialization state and listens to nearby WiFi data packets;

[0076] (2) After the mobile terminal sets the WiFi name and password, it sends a UDP broadcast packet;

[0077] (3) The device obtains the configuration information through the UDP packet (length), switches the network mode, connects to the WiFi network, and the configuration is completed.

[0078] After the millimeter wave radar device successfully communicates with the cloud server, such as Image 6 As shown, the workflow specifically includes:

...

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Abstract

The invention discloses a millimeter wave radar device, method and system for vital sign monitoring. The millimeter wave radar device comprises a millimeter wave radar sensor module and a data processing module. The millimeter wave radar sensor module sends a radar signal to the surface of the thoracic cavity of a target human body and receives returned echo signals; and the data processing modulecalculates distance information of fluctuation of the surface of the thoracic cavity in unit time according to the echo signals, extracts breathing signals and heartbeat signals according to phase difference signals in the distance information, and obtains breathing frequency and heartbeat frequency according to the breathing signals and the heartbeat signals. Based on an FMCW radar system, radarechoes reflected by the surface of a human body are obtained, electrocardiosignals of the human body are detected by calculating changes of distance information of a target point and micro-motion information of the surface of the human body in unit time, non-contact non-inductive accurate monitoring of respiration and heart rate of the human body is achieved, and the device can be applied to therelated fields of medical treatment, nursing and the like.

Description

technical field [0001] The invention relates to the technical field of auxiliary medical equipment, in particular to a millimeter-wave radar device, method and system for monitoring vital signs. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] With the continuous strengthening of personal health awareness and health care awareness, the aging process of the population is accelerating, and the burden on traditional medical institutions has increased. It is necessary to monitor the vital signs of the human body in real time to ensure human life and health. At present, a variety of vital sign monitoring technologies have been applied in medical care, elderly care, infant care and other fields; for example, in medical testing for hospitals, polysomnography can monitor electrocardiogram, electromyography , eye movement graph and other physiologi...

Claims

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Application Information

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IPC IPC(8): A61B5/0205A61B5/00H04W4/80H04W48/10H04W48/16A61B5/318
CPCA61B5/0205A61B5/725A61B5/0004A61B5/0006A61B5/0022H04W4/80H04W48/10H04W48/16A61B5/024A61B5/0816A61B2560/0214
Inventor 刘利达
Owner 山东润一智能科技有限公司
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