CN115356725A - Integrated non-contact millimeter wave radar system for health monitoring - Google Patents

Integrated non-contact millimeter wave radar system for health monitoring Download PDF

Info

Publication number
CN115356725A
CN115356725A CN202211035994.1A CN202211035994A CN115356725A CN 115356725 A CN115356725 A CN 115356725A CN 202211035994 A CN202211035994 A CN 202211035994A CN 115356725 A CN115356725 A CN 115356725A
Authority
CN
China
Prior art keywords
monitoring
sleep
millimeter wave
frequency
wave radar
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202211035994.1A
Other languages
Chinese (zh)
Inventor
关宇昕
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Zhijuxinlian Microelectronics Co ltd
Original Assignee
Suzhou Zhijuxinlian Microelectronics Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Suzhou Zhijuxinlian Microelectronics Co ltd filed Critical Suzhou Zhijuxinlian Microelectronics Co ltd
Priority to CN202211035994.1A priority Critical patent/CN115356725A/en
Publication of CN115356725A publication Critical patent/CN115356725A/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88Radar or analogous systems specially adapted for specific applications
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/02Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/0205Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
    • A61B5/02055Simultaneously evaluating both cardiovascular condition and temperature
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/05Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves 
    • A61B5/0507Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves  using microwaves or terahertz waves
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/103Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/11Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
    • A61B5/1116Determining posture transitions
    • A61B5/1117Fall detection
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/48Other medical applications
    • A61B5/4806Sleep evaluation
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/74Details of notification to user or communication with user or patient ; user input means
    • A61B5/746Alarms related to a physiological condition, e.g. details of setting alarm thresholds or avoiding false alarms
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06Systems determining position data of a target
    • G01S13/08Systems for measuring distance only
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88Radar or analogous systems specially adapted for specific applications
    • G01S13/886Radar or analogous systems specially adapted for specific applications for alarm systems
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/41Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00 using analysis of echo signal for target characterisation; Target signature; Target cross-section

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Biomedical Technology (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • General Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Biophysics (AREA)
  • Physiology (AREA)
  • Cardiology (AREA)
  • Electromagnetism (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Pulmonology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

The invention relates to an integrated non-contact millimeter wave radar system for health monitoring, which comprises a vital sign monitoring module, a sleep monitoring module, a falling monitoring module and a Labview visual display module. The system adopts the millimeter wave radar sensor with 60Ghz to realize the non-contact health monitoring of the human body, and avoids the problems of complex operation, limited application range, low user dependency and low integration degree of the existing monitoring system. Compared with the existing monitoring system, the system has the advantages of high resolution, strong sensitivity, high visualization degree and multifunction integration, health characteristic signals of a human body can be monitored, evaluated and judged in real time through the millimeter wave radar, and fed back to a doctor or a guardian in time, and the doctor or the guardian can make emergency treatment according to corresponding prompts. The system plays an important role in special crowds such as children, old people, burn patients, infectious disease patients and the like, and can achieve the purpose of efficient and accurate monitoring.

Description

Integrated non-contact millimeter wave radar system for health monitoring
Technical Field
The invention relates to the field of non-contact health monitoring, in particular to an integrated non-contact millimeter wave radar system for health monitoring.
Background
In recent years, human health monitoring becomes a hot issue of attention, especially for health monitoring of special people such as children and the elderly. Vital signs such as respiration and heart rate, and behaviors such as sleep conditions and falling down can directly reflect the health conditions of human bodies, and are the main reasons for causing medical emergencies and influencing life quality at present. Therefore, real-time monitoring of these vital signs, sleep conditions and falls is of great practical significance. Meanwhile, with the increasing aging of population and the current situation of epidemic situation of current pandemic, the demand for monitoring body health is more urgent.
The existing human health monitoring system mainly carries out measurement by directly or indirectly contacting with a human body through a contact type sensor, an electrode patch and the like. However, the range of use of these wearable devices is often restricted, and there are user compliance issues, such as: when children or old patients do not want to wear the monitoring system or can not wear the monitoring system again after falling off in the using process, the monitoring system can not carry out normal monitoring. In addition, the wearing of these monitoring systems may affect the normal activities and lives of the monitored person. Therefore, how to develop a health monitoring system which can solve the existing problems, especially is convenient for children and elderly patients to use, is a key problem to be solved in the field of health monitoring at present.
In order to solve the problems, the invention provides an integrated non-contact millimeter wave radar system for health monitoring, which comprises a vital sign monitoring module, a sleep monitoring module, a falling monitoring module and a Labview visual display module. The system adopts the millimeter wave radar to realize non-contact health monitoring on the human body, and avoids the problems of complex operation, limited application range, low user dependency and low integration degree of the existing monitoring system. Compared with the existing monitoring system, the system has the advantages of high differentiation rate, high sensitivity, high visualization degree and multifunction integration, health characteristic signals of a human body can be monitored, evaluated and judged in real time through the millimeter wave radar and fed back to doctors or guardians in time, and the doctors or the guardians can make emergency treatment according to corresponding prompts. The system plays a great role in special crowds such as children and the elderly, and can achieve the purpose of efficient and accurate monitoring.
Disclosure of Invention
In order to solve the above problems, the present invention provides an integrated non-contact millimeter wave radar system for health monitoring with high resolution, high sensitivity, high visualization degree, and multiple functions and integration.
In order to achieve the purpose, the invention adopts the technical scheme that:
an integrated non-contact millimeter wave radar system for health monitoring is characterized by comprising a vital sign monitoring module, a sleep monitoring module, a falling monitoring module and a visual display module; the vital sign monitoring module is used for monitoring, evaluating and judging the respiratory rate and the heart rate of a human body; the sleep monitoring module is used for realizing sleep quality, sleep apnea monitoring, sleep posture identification and evaluation judgment; the fall monitoring module can timely send out a warning to family members and guardians when a monitored person falls; the visual display module is used for displaying the vital signs, the sleep and fall signal signs and the evaluation and judgment results identified by the three modules in real time, and meanwhile, the visual display module can realize an alarm function under the emergency condition; the four modules realize a multifunctional integrated system for monitoring human health through hardware design, software programming and block debugging, and the system can monitor, evaluate and judge the health characteristic signals of human bodies in real time and feed the health characteristic signals back to doctors or guardians in time, so that a quick and efficient emergency treatment effect is achieved.
Further, preferably, the vital sign monitoring module, the sleep monitoring module and the fall monitoring module adopt a 60Ghz millimeter wave radar sensor, and the 60Ghz short-range wave band is used for non-contact measurement of distance, movement and micro-vibration; the millimeter wave radar sensor with the frequency of 60Ghz consists of a Frequency Modulation Continuous Wave (FMCW) synthesizer, an Active Power Divider (APD), a Transmitter (TX) chain, a Receiver (RX) chain and an analog baseband circuit; the FMCW synthesizer adopts a fundamental wave Voltage Controlled Oscillator (VCO), a fully integrated decimal N-frequency division phase-locked loop (PLL) and a digital multi-linear frequency modulation generator, and can synthesize complex frequency waveforms with 16 different configurations; the Transmitter (TX) chain consists of a Variable Gain Amplifier (VGA), a Power Amplifier (PA) and a Power Detector (PD) for output power monitoring and is used for transmitting signals; said Receiver (RX) chain consists of an in-phase/quadrature (I/Q) generator and an I/Q demodulator for transmitting signals; the analog baseband circuit consists of a processing chain of a fully programmable Variable Gain Amplifier (VGA), a low-pass filter, a high-pass filter and an output buffer and is used for processing signals.
Further, the fully integrated fractional-N phase-locked loop (PLL) internally comprises a digital-to-analog converter (DAC) for realizing the conversion function of digital and analog signals, a low-pass filter (LPF) for filtering signals, a phase frequency detector and a charge pump (PFD + CP) for controlling the working frequency of a base-wave voltage-controlled oscillator (VCO); the fully integrated fractional-N frequency division phase-locked loop (PLL) compares the phase of an external signal with the phase of a clock signal generated by the fundamental wave voltage-controlled oscillator (VCO) to ensure that the external signal and the clock signal are in the same phase and are matched uniformly.
Further, preferably, the digital multi-chirp generator internally includes a Prescaler (Prescaler) for controlling an output frequency, a Divider (Divider Chain) for specifically performing a frequency dividing operation, a Modulator (Modulator) for controlling a clock noise characteristic, a frequency division Control module (MMD) for adjusting an integer and a decimal in a frequency dividing process, and a Control module (Ramp Control) for adjusting a frequency precision; the digital multi-linear frequency modulation generator realizes the correction synchronization on the signal phase while performing frequency division processing on the signal to obtain a modulated continuous wave signal.
Further, preferably, the Frequency Modulated Continuous Wave (FMCW) synthesizer transmits a continuous wave signal modulated by the digital multi-chirp generator at a higher carrier frequency through the Transmitter (TX) chain, and when encountering a target to be measured, the FMCW synthesizer receives an echo signal from the Receiver (RX) chain, mixes the echo signal with the higher carrier frequency transmitted through the Transmitter (TX) chain to obtain a difference frequency signal, and acquires distance information of the target to be measured.
Further, preferably, the system also comprises a digital signal processing circuit, an ultra-low power consumption TI MSP430FG47x series single chip microcomputer and a power supply, wherein the digital signal processing circuit is used for converting the vital signs, the sleep and fall signals collected by the radar sensor into digital information; the ultra-low power consumption TI MSP430FG47x series single chip microcomputer is used for receiving, processing and operating the digital information converted by the digital signal processing circuit; the power supply supplies power to the ultra-low power consumption TI MSP430FG47x series single-chip microcomputer.
Further, preferably, the visual display module adopts a Labview visual programming technology for processing and displaying the information received according to the communication protocol and processed and calculated by the ultra-low power consumption TI MSP430FG47x series single chip microcomputer, the Labview visual programming technology can fully exert the capability of a computer, has a powerful data processing function and can realize remote monitoring, and a user can define and manufacture various instruments with powerful functions according to actual requirements.
Further, preferably, the Labview visualization programming technology comprises three modules of vital sign visualization, sleep visualization and falling behavior visualization, wherein the vital sign visualization is used for displaying a respiration waveform, a heart rate waveform, an average heart rate and an average respiration rate; the sleep visualization is used for displaying sleep time, sleep delay time, waking time after waking, total sleep time, sleep respiration waveform, sleeping posture dynamic waveform and sleep efficiency; the fall behavior visualization is used for displaying body temperature, heart rate, respiration and blood sample waveforms; meanwhile, the three modules have diagnosis result description and abnormal alarm functions.
Further, as preferred, the integration of above-mentioned all design schemes can realize including human vital sign, sleep, the multi-functional real-time supervision of the behavior of tumbleing, especially can satisfy children, old person, burn patient, infectious disease patient's special crowd's monitoring demand.
The invention has the beneficial effects that:
the invention provides an integrated non-contact millimeter wave radar system for health monitoring, which comprises a vital sign monitoring module, a sleep monitoring module, a falling monitoring module and a Labview visual display module. The system adopts the millimeter wave radar to realize non-contact health monitoring on the human body, and avoids the problems of complex operation, limited application range, low user dependency and low integration degree of the existing monitoring system. Compared with the existing monitoring system, the system has the advantages of high differentiation rate, high sensitivity, high visualization degree and multifunction integration, health characteristic signals of a human body can be monitored, evaluated and judged in real time through the millimeter wave radar and fed back to doctors or guardians in time, and the doctors or the guardians can make emergency treatment according to corresponding prompts. The system plays an important role in special crowds such as children, old people, burn patients, infectious disease patients and the like, and can achieve the purpose of efficient and accurate monitoring.
Drawings
FIG. 1 is a schematic diagram of an integrated contactless millimeter wave radar system for health monitoring;
FIG. 2 is a schematic circuit diagram of a 60Ghz millimeter wave radar sensor;
fig. 3 is a schematic diagram of a Labview visual display module for vital signs, sleep and fall monitoring.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings. It is to be understood, however, that the drawings are provided solely for the purpose of providing a further understanding of the invention by those skilled in the art and are not intended to limit the invention in any way.
The invention aims to solve the problems of complex operation, limited application range, low dependency and integration degree of a user of the existing monitoring system, and provides an integrated non-contact millimeter wave radar system for health monitoring.
As shown in fig. 1, the present invention provides an integrated non-contact millimeter wave radar system for health monitoring, which includes a vital sign monitoring module, a sleep monitoring module, a fall monitoring module and a visual display module; the vital sign monitoring module is used for monitoring, evaluating and judging the respiratory rate and the heart rate of a human body; the sleep monitoring module is used for realizing sleep quality, sleep apnea monitoring, sleep posture identification and evaluation judgment; the fall monitoring module can timely send out warning to family members and guardians when a monitored person falls; the visual display module is used for displaying the vital signs, the sleep and fall signal signs and the evaluation and judgment results identified by the three modules in real time, and meanwhile, the visual display module can realize an alarm function under the emergency condition; the four modules realize a multifunctional integrated system for monitoring human health through hardware design, software programming and block debugging, and the system can monitor, evaluate and judge the health characteristic signals of human bodies in real time and feed the health characteristic signals back to doctors or guardians in time, so that a quick and efficient emergency treatment effect is achieved.
As shown in fig. 2, in this embodiment, the vital sign monitoring module, the sleep monitoring module and the fall monitoring module all use a 60Ghz millimeter wave radar sensor, and use a 60Ghz short-range band to perform non-contact measurement on distance, motion and micro-vibration; the millimeter wave radar sensor with the frequency modulation of 60Ghz consists of a Frequency Modulation Continuous Wave (FMCW) synthesizer 1, an Active Power Divider (APD) 2, a Transmitter (TX) chain 3, a Receiver (RX) 4 chain and an analog baseband circuit 5; the Frequency Modulation Continuous Wave (FMCW) synthesizer 1 adopts a fundamental wave Voltage Controlled Oscillator (VCO) 6, a fully integrated decimal N-division phase-locked loop (PLL) 7 and a digital multi-linear frequency modulation generator 8, and can synthesize complex frequency waveforms with 16 different configurations; the Transmitter (TX) chain 3 consists of a Variable Gain Amplifier (VGA), a Power Amplifier (PA) and a Power Detector (PD) for output power monitoring and is used for transmitting signals; said Receiver (RX) chain 4 is composed of an in-phase/quadrature (I/Q) generator and an I/Q demodulator, for receiving signals; the analog baseband circuit 5 is composed of a processing chain of a fully programmable Variable Gain Amplifier (VGA), a low pass filter, a high pass filter and an output buffer, and is used for processing signals.
As shown in fig. 2, the fully integrated fractional-N phase-locked loop (PLL) 7 of the present invention internally includes a digital-to-analog converter (DAC) for implementing digital-to-analog signal conversion function, a loop low-pass filter (LPF) for filtering signals, and a phase frequency detector and a charge pump (PFD + CP) for controlling the operating frequency of a fundamental Voltage Controlled Oscillator (VCO); the fully integrated fractional-N phase-locked loop (PLL) 7 compares the phase of the external signal with the phase of the clock signal generated by the fundamental Voltage Controlled Oscillator (VCO) 6, so that the external signal and the clock signal are in the same phase and are matched with each other.
As shown in fig. 2, the digital multi-chirp generator 8 of the present invention internally includes a Prescaler (Prescaler) for controlling an output frequency, a Divider (Divider Chain) for specifically performing a frequency dividing operation, a Modulator (Modulator) for controlling a clock noise characteristic, a frequency division Control module (MMD) for adjusting an integer and a decimal in a frequency dividing process, and a Control module (Ramp Control) for adjusting a frequency precision; the digital multi-chirp generator 8 performs frequency division processing on the signal and simultaneously realizes correction synchronization on the signal phase to obtain a modulated continuous wave signal.
As shown in fig. 2, the Frequency Modulated Continuous Wave (FMCW) synthesizer 1 of the present invention transmits a continuous wave signal modulated by the digital multi-chirp generator 8 through the Transmitter (TX) chain 3 at a higher carrier frequency, and when encountering a target to be measured, the Frequency Modulated Continuous Wave (FMCW) synthesizer 1 receives an echo signal from the Receiver (RX) chain 4, mixes the echo signal with the higher carrier frequency transmitted by the Transmitter (TX) chain 3 to obtain a difference frequency signal, and realizes acquisition of distance information of the target to be measured.
The invention also comprises a digital signal processing circuit, an ultra-low power consumption TI MSP430FG47x series single chip microcomputer and a power supply, wherein the digital signal processing circuit is used for converting the vital signs, the sleep and fall signals collected by the radar sensor into digital information; the ultra-low power consumption TI MSP430FG47x series single chip microcomputer is used for receiving, processing and operating the digital information converted by the digital signal processing circuit; the power supply supplies power to the ultralow power consumption TI MSP430FG47x series single chip microcomputer.
The visual display module adopts Labview visual programming technology for processing and displaying information received according to a communication protocol and processed and calculated by an ultra-low power consumption TI MSP430FG47x series single chip microcomputer, the Labview visual programming technology can give full play to the capability of a computer, has powerful data processing function and can realize remote monitoring, and a user can define and manufacture various instruments with powerful functions according to actual requirements.
As shown in fig. 3, the Labview visualization programming technology includes three modules, namely, vital sign visualization, sleep visualization and fall behavior visualization, wherein the vital sign visualization is used for displaying a respiration waveform, a heart rate waveform, an average heart rate and an average respiration rate; the sleep visualization is used for displaying sleep time, sleep delay time, waking time after waking, total sleep time, sleep respiration waveform, sleeping posture dynamic waveform and sleep efficiency; the fall behavior visualization is used for displaying body temperature, heart rate, respiration and blood sample waveforms; meanwhile, the three modules have diagnosis result description and abnormity alarm functions.
The integration of all design schemes of the invention can realize the multifunctional real-time monitoring of vital signs, sleep and falling behaviors of human bodies, and especially can meet the monitoring requirements of special people such as children, old people, burn patients, infectious disease patients and the like.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims (9)

1. An integrated non-contact millimeter wave radar system for health monitoring is characterized by comprising a vital sign monitoring module, a sleep monitoring module, a falling monitoring module and a visual display module; the vital sign monitoring module is used for monitoring, evaluating and judging the respiratory rate and the heart rate of a human body; the sleep monitoring module is used for realizing sleep quality, sleep apnea monitoring, sleep posture identification and evaluation judgment; the fall monitoring module can timely send out a warning to family members and guardians when a monitored person falls; the visual display module is used for displaying the vital signs, the sleep and fall signal signs and the evaluation and judgment results identified by the three modules in real time, and meanwhile, the visual display module can realize an alarm function under the emergency condition; the four modules realize a multifunctional integrated system for monitoring human health through hardware design, software programming and block debugging, and the system can monitor, evaluate and judge the health characteristic signals of human bodies in real time and feed back the health characteristic signals to doctors or guardians in time, so that a quick and efficient emergency treatment effect is achieved.
2. The integrated non-contact millimeter wave radar system for health monitoring as claimed in claim 1, wherein the vital signs monitoring module, the sleep monitoring module and the fall monitoring module all adopt a 60Ghz millimeter wave radar sensor, and the 60Ghz short-range band is used for non-contact measurement of distance, motion and micro-vibration; the millimeter wave radar sensor with the frequency modulation of 60Ghz consists of a Frequency Modulation Continuous Wave (FMCW) synthesizer, an Active Power Divider (APD), a Transmitter (TX) chain, a Receiver (RX) chain and an analog baseband circuit; the Frequency Modulation Continuous Wave (FMCW) synthesizer adopts a fundamental wave Voltage Controlled Oscillator (VCO), a fully integrated fractional-N frequency division phase-locked loop (PLL) and a digital multi-linear frequency modulation generator, and can synthesize complex frequency waveforms with 16 different configurations; the Transmitter (TX) chain consists of a Variable Gain Amplifier (VGA), a Power Amplifier (PA) and a Power Detector (PD) for monitoring output power and is used for transmitting signals; said Receiver (RX) chain consists of an in-phase/quadrature (I/Q) generator and an I/Q demodulator for receiving signals; the analog baseband circuit consists of a processing chain of a fully programmable Variable Gain Amplifier (VGA), a low-pass filter, a high-pass filter and an output buffer and is used for processing signals.
3. An integrated non-contact millimeter wave radar system for health monitoring according to claim 2, wherein the fully integrated fractional-N PLL (PLL) comprises a digital-to-analog converter (DAC) for converting digital-to-analog signals, a loop Low Pass Filter (LPF) for filtering signals, a phase frequency detector and a charge pump (PFD + CP) for controlling the operating frequency of a base-wave voltage-controlled oscillator (VCO); the fully integrated fractional-N frequency division phase-locked loop (PLL) compares the phase of an external signal with the phase of a clock signal generated by the fundamental wave voltage-controlled oscillator (VCO) to ensure that the external signal and the clock signal are in the same phase and are matched uniformly.
4. An integrated non-contact millimeter wave radar system for health monitoring according to claim 2, wherein the digital multi-chirp generator internally comprises a Prescaler (Prescaler) for controlling the output frequency, a Divider (Divider Chain) for specifically performing the frequency dividing operation, a Modulator (Modulator) for controlling the clock noise characteristics, a frequency division Control module (MMD) for adjusting the integer and the decimal in the frequency dividing process, and a Control module (Ramp Control) for adjusting the frequency precision; the digital multi-linear frequency modulation generator realizes the correction synchronization on the signal phase while performing frequency division processing on the signal to obtain a modulated continuous wave signal.
5. An integrated millimeter wave radar system for health monitoring as claimed in claim 2, wherein the Frequency Modulated Continuous Wave (FMCW) synthesizer transmits the continuous wave modulated by the digital multi-chirp generator via the Transmitter (TX) chain at a higher carrier frequency, and when encountering the target to be detected, the FMCW synthesizer receives the echo signal from the Receiver (RX) chain, and mixes the echo signal with the higher carrier frequency transmitted via the Transmitter (TX) chain to obtain a difference frequency signal, thereby acquiring the distance information of the target to be detected.
6. The integrated non-contact millimeter wave radar system for health monitoring as claimed in claim 1, further comprising a digital signal processing circuit, an ultra-low power TI MSP430FG47x series single chip microcomputer and a power supply, wherein the digital signal processing circuit is used for converting the vital signs, sleep and fall signals collected by the radar sensor into digital information; the ultra-low power consumption TI MSP430FG47x series single chip microcomputer is used for receiving, processing and operating the digital information converted by the digital signal processing circuit; the power supply supplies power to the ultra-low power consumption TI MSP430FG47x series single-chip microcomputer.
7. The integrated non-contact millimeter wave radar system for health monitoring as claimed in claim 1, wherein the visualization display module employs Labview visualization programming technology for processing and displaying the information received according to the communication protocol after being processed and computed by the TI MSP430FG47x series single-chip microcomputer with ultra-low power consumption, the Labview visualization programming technology can fully utilize the capability of the computer, has powerful data processing function and can realize remote monitoring, and users can define and manufacture various powerful instruments according to actual requirements.
8. An integrated non-contact millimeter wave radar system for health monitoring according to claim 7, wherein the Labview visualization programming technology comprises three modules of vital sign visualization, sleep visualization and fall behavior visualization, and the vital sign visualization is used for displaying a respiration waveform, a heart rate waveform, an average heart rate and an average respiration rate; the sleep visualization is used for displaying sleep time, sleep delay time, waking time after waking, total sleep time, sleep respiration waveform, sleeping posture dynamic waveform and sleep efficiency; the fall behavior visualization is used for displaying body temperature, heart rate, respiration and blood sample waveforms; meanwhile, the three modules have diagnosis result description and abnormal alarm functions.
9. An integrated non-contact millimeter wave radar system for health monitoring according to any one of claims 1 to 7, wherein the integration of all the above design schemes can realize multifunctional real-time monitoring of vital signs, sleep and fall of human body, especially can meet the monitoring requirements of special people such as children, the elderly, burn patients and infectious disease patients.
CN202211035994.1A 2022-08-27 2022-08-27 Integrated non-contact millimeter wave radar system for health monitoring Withdrawn CN115356725A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211035994.1A CN115356725A (en) 2022-08-27 2022-08-27 Integrated non-contact millimeter wave radar system for health monitoring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211035994.1A CN115356725A (en) 2022-08-27 2022-08-27 Integrated non-contact millimeter wave radar system for health monitoring

Publications (1)

Publication Number Publication Date
CN115356725A true CN115356725A (en) 2022-11-18

Family

ID=84004534

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211035994.1A Withdrawn CN115356725A (en) 2022-08-27 2022-08-27 Integrated non-contact millimeter wave radar system for health monitoring

Country Status (1)

Country Link
CN (1) CN115356725A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115886772A (en) * 2022-11-21 2023-04-04 无锡禾木森智能科技有限公司 Non-contact health state acquisition system in elevator car
CN117281498A (en) * 2023-11-24 2023-12-26 北京清雷科技有限公司 Health risk early warning method and equipment based on millimeter wave radar

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115886772A (en) * 2022-11-21 2023-04-04 无锡禾木森智能科技有限公司 Non-contact health state acquisition system in elevator car
CN117281498A (en) * 2023-11-24 2023-12-26 北京清雷科技有限公司 Health risk early warning method and equipment based on millimeter wave radar
CN117281498B (en) * 2023-11-24 2024-02-20 北京清雷科技有限公司 Health risk early warning method and equipment based on millimeter wave radar

Similar Documents

Publication Publication Date Title
CN115356725A (en) Integrated non-contact millimeter wave radar system for health monitoring
US11717235B2 (en) System and method for biometric measurements
Hao et al. Wireless body sensor networks for health-monitoring applications
Milenković et al. Wireless sensor networks for personal health monitoring: Issues and an implementation
US20050075067A1 (en) Wireless subject monitoring system
US9042956B2 (en) System and method for power-efficient transmission of EMG data
CN112472051A (en) Millimeter wave radar device, method and system for monitoring vital signs
CN112930138B (en) Method and device for monitoring vital signs of user
CN111887818A (en) Intelligent vital sign monitoring and controlling system and method based on microwave radar
Begum et al. Smart healthcare monitoring system in IoT
TWI685205B (en) Non-contact self-injection-locked vital sign sensor
US6945935B1 (en) Wireless sleep monitoring
Awan et al. Conceptual model for WWBAN (wearable wireless body area network)
CN204708827U (en) Based on the medical monitoring system of ZigBee wearable sensors
CN107836787A (en) A kind of intelligent finger ring
CN204683611U (en) A kind of wireless wearable blood oxygen monitor
CN213721932U (en) Non-contact respiration and heart rate monitoring device
CN203677071U (en) Human physiological information detector based on cloud of Internet of Things
Thulasi Bai et al. Design of wearable cardiac telemedicine system
Bhope et al. Patient monitoring in hospital using Li-Fi
Srivastava et al. Bio-telemetry and bio-instrumentation technologies for healthcare monitoring systems
Bai et al. Design and simulation of portable telemedicine system for high risk cardiac patients
Ahmed et al. Towards Contactless Remote Health Monitoring using Ambient RF Sensing
CN117598707A (en) Electrocardiosignal detection system and method based on phase-locked loop
CN107919173A (en) A kind of Telemedicine System

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication

Application publication date: 20221118

WW01 Invention patent application withdrawn after publication