WO2018032610A1 - Heart rate measurement device and method - Google Patents
Heart rate measurement device and method Download PDFInfo
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- WO2018032610A1 WO2018032610A1 PCT/CN2016/103762 CN2016103762W WO2018032610A1 WO 2018032610 A1 WO2018032610 A1 WO 2018032610A1 CN 2016103762 W CN2016103762 W CN 2016103762W WO 2018032610 A1 WO2018032610 A1 WO 2018032610A1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, 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
- A61B5/024—Detecting, measuring or recording pulse rate or heart rate
- A61B5/0245—Detecting, measuring or recording pulse rate or heart rate by using sensing means generating electric signals, i.e. ECG signals
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
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- A—HUMAN NECESSITIES
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- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
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- A61B5/6887—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient mounted on external non-worn devices, e.g. non-medical devices
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Definitions
- Embodiments of the present invention relate to the field of medical instrument technology, and in particular, to a heart rate measuring device and method.
- the commonly used heart rate measuring instruments include: a fiber grating sensor-based measuring instrument, a blood pressure meter, a photoelectric intelligent pulse-based measuring instrument, an electrocardiographic measuring instrument, etc., and the above instruments are based on the following four principles:
- the pressure within the arteries fluctuates periodically as the heart contracts.
- the pressure sensor is used to measure the change of the pressure, and the heart rate can be calculated after being processed by the amplifier circuit, the filter circuit, and the microprocessor. This method is often used in conjunction with blood pressure measurement, and requires an air pump when used.
- the sphygmomanometer generally uses this method to measure heart rate.
- the electrical resistance of the human arterial blood changes with the flow of blood, and the heart rate can be extracted by this change.
- the skin has a great influence on this method, and different measurement results of different time-tested subjects are affected to varying degrees, so this method is generally not used to measure heart rate.
- Electrocardiogram is the best way to measure and diagnose abnormal heart rhythms.
- the instrument that uses ECG to measure heart rate is mainly an electrocardiograph.
- a photoelectric-based heart rate measurement method has been developed. This method generally uses a photoelectric sensor including an infrared emitting and infrared receiving diode to collect pulse information, and calculates a heart rate through an amplifying circuit and signal processing.
- the part where the heart rate is collected is generally the fingertip or the auricle.
- the first two methods need to be measured by the user under test, which is inconvenient, and the latter two active methods also have the following deficiencies:
- ECG electrocardiogram
- PPG photoelectric
- the blood absorption rate of light is measured by photoplethysmography, and the heart rate is calculated.
- the ECG form measures the change of bioelectricity through a closed loop of bioelectricity in the lead, and then calculates the heart rate.
- the shortcomings of the PPG method are poor heart rate accuracy, easy to be interfered by other light, and the influence of skin sweat when worn.
- the disadvantage of the ECG method is that the measuring device is more complicated to wear and needs to form a closed loop, which is not convenient for daily wear. .
- the technical problem to be solved by the embodiments of the present invention is to provide a heart rate measuring device and method, which can provide a non-invasive heart rate measuring device with a good user experience and a corresponding heart rate extracting method.
- one technical solution adopted by the embodiment of the present invention is to provide a heart rate measuring device.
- the device comprises: an internal oscillation module, an electromagnetic wave transmitting probe, an echo signal acquisition probe and a signal analysis module, wherein:
- the internal oscillation module is configured to generate electromagnetic waves in a fixed frequency band
- the electromagnetic wave transmitting probe is configured to emit the electromagnetic wave to an area to be tested;
- the echo signal acquisition probe is configured to receive an echo signal reflected by the reflection source, and Transmitting an echo signal to the signal analysis module;
- the signal analysis module is configured to extract an ECG signal according to the echo signal, and obtain heart rate measurement data according to the ECG signal.
- the internal oscillation module includes an oscillator and a matching circuit, wherein the oscillator is used to generate an alternating current signal, and the matching circuit is configured to generate an electromagnetic wave of the fixed frequency band according to the alternating current signal.
- the electromagnetic wave transmitting probe transmits the electromagnetic wave by using a frequency modulation carrier
- the frequency modulation carrier has a transmission frequency of 5.25 GHz to 7.25 GHz
- the frequency modulation carrier has a transmission period of 2 milliseconds.
- the signal analysis module comprises a micro processing unit, a sampling unit, an amplifying unit, and a filtering unit, wherein the micro processing unit is configured to execute a signal analysis instruction according to a specific timing, and the sampling unit is configured to use the echo
- the signal performs sampling processing to obtain a sampling signal
- the amplifying unit is configured to perform amplification processing on the sampling signal
- the filtering unit is configured to remove noise in a specific waveform.
- the signal analysis module further comprises a phase analysis unit, wherein the phase analysis unit is configured to determine a reflection source that generates the echo signal according to a phase characteristic of the echo signal.
- another technical solution adopted by the embodiment of the present invention is to provide a heart rate detecting method, and the method includes:
- Electromagnetic waves are generated by an internal oscillation module
- An electromagnetic wave transmitting probe emits the electromagnetic wave to an area to be tested
- the echo signal acquisition probe receives the echo signal reflected by the reflection source, and sends the echo signal to the signal analysis module;
- the signal analysis module extracts an electrocardiographic signal according to the echo signal, and obtains heart rate measurement data according to the ECG signal.
- the electromagnetic wave transmitting probe transmitting the electromagnetic wave to the area to be tested comprises:
- the electromagnetic wave transmitting probe transmits the electromagnetic wave by using a frequency modulation carrier.
- the frequency modulation carrier has a transmission frequency of 5.25 GHz to 7.25 GHz, and the frequency modulation carrier has a transmission period of 2 milliseconds.
- the signal analysis module extracts an ECG signal according to the echo signal, and further includes Obtaining heart rate measurement data according to the ECG signal includes:
- the signal analysis module extracts an electrocardiogram signal according to the echo signal, and obtains heart rate measurement data according to the ECG signal, further comprising:
- the carrier signal is divided into different regions according to the reflection time to distinguish echo signals generated by different obstacles and different human bodies.
- the signal analysis module extracts an electrocardiogram signal according to the echo signal, and obtains heart rate measurement data according to the ECG signal, further comprising:
- a reflection source that generates the echo signal is determined according to a phase characteristic of the echo signal, and heart rate data is determined according to an echo signal of the reflection source.
- the present invention has the beneficial effects of providing a non-invasive measuring device and a corresponding heart rate extraction method, which is free from inconvenience of being worn by the user to be tested, and is convenient for test deployment.
- the present invention is applicable to a home or a workplace. Such as the environment, you can achieve heart rate measurement operation for multiple people at the same time in self-accurate, accurate, real-time, and non-perceived situations.
- FIG. 1 is a schematic structural view of a first embodiment of a heart rate measuring device according to an embodiment of the present invention
- FIG. 2 is a schematic structural diagram of a second embodiment of a heart rate measuring device according to an embodiment of the present invention.
- FIG. 3 is a schematic structural diagram of a third embodiment of a heart rate measuring device according to an embodiment of the present invention.
- FIG. 4 is a flowchart of a fourth embodiment of a heart rate measurement method according to an embodiment of the present invention.
- FIG. 5 is a flowchart of a fifth embodiment of a heart rate measurement method according to an embodiment of the present invention.
- FIG. 6 is a flowchart of a sixth embodiment of a heart rate measurement method according to an embodiment of the present invention.
- FIG. 7 is a flowchart of a seventh embodiment of a heart rate measurement method according to an embodiment of the present invention.
- FIG. 1 is a schematic structural view of a first embodiment of a heart rate measuring device according to an embodiment of the present invention.
- a heart rate measuring device provided by this embodiment includes: an internal oscillation module 10 , an electromagnetic wave transmitting probe 20 , an echo signal acquiring probe 30 , and a signal analyzing module 40 .
- each module of the device can be integrated into one housing and form a heart rate measuring device with a matching power module, a communication module and the like.
- the device can be placed in a public place to test the heart rate of the human body in the coverage area, for example, a school, a hospital, a station, etc., or can be set in a home for detecting heart rate data of family members.
- the internal oscillation module 10 of the device is configured to generate electromagnetic waves in a fixed frequency band
- the electromagnetic wave transmitting probe 20 is configured to emit electromagnetic waves to the area to be tested;
- the echo signal acquisition probe 30 is configured to receive the echo signal reflected by the reflection source, and send the echo signal to the signal analysis module 40;
- the signal analysis module 40 is configured to extract an ECG signal according to the echo signal, and obtain heart rate measurement data according to the ECG signal.
- the solution may directly analyze the echo signal generated by the reflection source to obtain heart rate data corresponding to the reflection source.
- the signal analysis module 40 is further configured to determine the phase characteristic according to the echo signal.
- the reflection source of the echo signal specifically:
- the space to be tested may be a living area such as a living room in a home or a waiting room of a station. Therefore, the carrier signal emitted by the electromagnetic wave transmitting probe 20 will be subjected to three major categories in the process of transmitting in the space to be tested. Reflection of obstacles: building structures such as walls, stationary objects such as cabinets, and human bodies. Among them, the first two types of obstacles are stationary objects, and the movement of the human body The status is uncertain. Since the three types of obstacles in the space to be tested reflect the carrier signal, the echo signals generated by these obstacles include heart rate signals and other interference signals generated by the human body.
- the electromagnetic wave transmitting probe 20 emits electromagnetic waves using a frequency modulated carrier
- the frequency of the frequency modulated carrier is 5.25 GHz to 7.25 GHz
- the transmission period of the frequency modulated carrier is 2 milliseconds.
- the reflected carrier signal is divided into different regions according to the reflection time of the carrier signal, wherein the reflection time can be determined by the difference between the transmission timing of the carrier signal and the received reception time of the carrier signal.
- the corresponding reflected carrier signal is divided into the same area, and when the two objects are separated by more than or equal to 10 cm, the corresponding reflected carrier signal is obtained.
- Divided into different regions, wherein the distance between the two objects for determination can be determined according to the scenario to which the embodiment is applied, for example, when the space in the scene region is small, and there are many scraps, such as in a room, The distance is appropriately reduced, and for example, when the space in the scene area is large, such as at a station or other outdoor scene, the distance can be appropriately increased.
- the processing method of the segmentation area can realize the distinction between different obstacles. At the same time, the processing method of the segmentation area can also distinguish the reflection signals of different human bodies, so as to achieve simultaneous measurement by multiple people.
- the echo signal of a stationary object is usually time-invariant, and the echo signal generated by the human body due to its own motion, respiratory rhythm, etc., is usually time-varying.
- the moving human body and the stationary human body can be further identified.
- the phase of the echo signal is used to determine the discrimination of different human bodies.
- the wavelength used in this embodiment is 5 cm.
- the echo signal can be considered to be reflected back by the same human body. It can be understood that if the phases of the N sets of signals in the echo signal are varied within a certain range thereof, the echo signals corresponding to the N individuals in the space to be tested can be respectively determined.
- the processing method adopted in this embodiment is that the Fourier transform is first used to extract the time domain waveform in a specific frequency band; then, the digital filter is used to filter the waveform in the specific frequency band to remove noise.
- the window length is 30 seconds
- the frequency band in which the heart rate is located is a reserved frequency band, and the inverse Fourier transform is performed on the signal in the reserved frequency band to obtain a time domain signal corresponding to the reserved frequency band;
- the heart rate data is extracted from the ECG signal.
- the beneficial effect of the embodiment is that by using the electromagnetic wave echo signal to simultaneously detect and analyze the multi-person heart rate, the heart rate and the photoelectric method can be avoided to measure the heart rate deficiency, and a non-intrusive measuring device is provided, which eliminates the user to be tested.
- the inconvenience of wearing is convenient for test deployment.
- the present embodiment is applicable to an environment such as a home or a workplace, and can perform heart rate measurement operations on multiple people simultaneously in a self-determined, accurate, real-time, and non-sensing situation. Taking the heart rate band as the benchmark, the accuracy of this program is within plus or minus 5%, and the accuracy rate is high.
- FIG. 2 is a schematic structural view of a second embodiment of the heart rate measuring device according to an embodiment of the present invention.
- a heart rate measuring device differs from Embodiment 1 in that the internal oscillation module 10 of the present embodiment includes an oscillator 11 and a matching circuit 12, wherein the oscillator 10 is used to generate An AC signal, the matching circuit 12 is configured to generate an electromagnetic wave of the fixed frequency band according to the AC signal.
- FIG. 3 is a schematic structural view of a third embodiment of the heart rate measuring device according to the embodiment of the present invention.
- a heart rate measuring device differs from Embodiment 1 in that the signal analyzing module 40 of the present embodiment includes a micro processing unit 41, a sampling unit 42, an amplifying unit 43, and a filtering unit 44.
- the micro processing unit 41 is configured to execute a signal analysis instruction according to a specific timing
- the sampling unit 42 is configured to perform sampling processing on the echo signal, to obtain a sampling signal
- the amplifying unit 43 is configured to perform amplification processing on the sampling signal
- the filtering unit 44 is configured to Remove noise within a specific waveform.
- FIG. 4 is a flowchart of a fourth embodiment of the heart rate measuring method according to an embodiment of the present invention.
- a heart rate measurement method provided by this embodiment includes:
- the electromagnetic wave transmitting probe 20 emits electromagnetic waves to the area to be tested;
- the echo signal acquisition probe 30 receives the echo signal reflected by the reflection source, and sends the echo signal to the signal analysis module 40;
- the signal analysis module 40 extracts an ECG signal according to the echo signal, and obtains heart rate measurement data according to the ECG signal.
- each module involved in the method steps of the embodiment may be integrated into one housing, and constitute a heart rate measuring device with a matching power module, a communication module and the like.
- the device can be placed in a public place to test the heart rate of the human body in the coverage area, for example, a school, a hospital, a station, etc., or can be set in a home for detecting heart rate data of family members.
- the beneficial effect of the embodiment is that by using the electromagnetic wave echo signal to simultaneously detect and analyze the multi-person heart rate, the heart rate and the photoelectric method can be avoided to measure the heart rate deficiency, and a non-intrusive measuring device is provided, thereby eliminating the user to be tested.
- the inconvenience of wearing is convenient for test deployment.
- the present embodiment is applicable to an environment such as a home or a workplace, and can perform heart rate measurement operations on multiple people simultaneously in a self-determined, accurate, real-time, and non-sensing situation.
- FIG. 5 is a flowchart of a fifth embodiment of the heart rate measuring method according to an embodiment of the present invention.
- a heart rate measurement method differs from Embodiment 4 in that the signal analysis module 40 extracts an ECG signal according to an echo signal, and obtains heart rate measurement data according to the ECG signal, including:
- the space to be tested may be a living area such as a living room in a home or a waiting room of a station. Therefore, the carrier signal emitted by the electromagnetic wave transmitting probe 20 will be subjected to three major categories in the process of transmitting in the space to be tested. Reflection of obstacles: building structures such as walls, stationary objects such as cabinets, and human bodies. Among them, the first two types of obstacles are stationary objects, and the movement state of the human body is uncertain. Since the three types of obstacles in the space to be tested reflect the carrier signal, the echo signals generated by these obstacles include heart rate signals and other interference signals generated by the human body.
- the electromagnetic wave transmitting probe 20 emits electromagnetic waves using a frequency modulated carrier
- the frequency of the frequency modulated carrier is 5.25 GHz to 7.25 GHz
- the transmission period of the frequency modulated carrier is 2 milliseconds.
- the beneficial effect of this embodiment is that the reflection of the carrier signal in the space to be tested can be analyzed.
- FIG. 6 is a flowchart of a sixth embodiment of the heart rate measuring method according to an embodiment of the present invention.
- a heart rate measurement method provided by this embodiment is different from Embodiment 5 in that the signal analysis module 40 extracts an ECG signal according to an echo signal, and obtains heart rate measurement data according to the ECG signal, and further includes:
- the reflected carrier signal is divided into different regions according to the reflection time of the carrier signal, wherein the reflection time can be determined by the difference between the transmission timing of the carrier signal and the received reception time of the carrier signal.
- the corresponding reflected carrier signal is divided into the same area, and when the two objects are separated by more than or equal to 10 cm, the corresponding reflected carrier signal is obtained.
- Divided into different regions, wherein the distance between the two objects for determination can be determined according to the scenario to which the embodiment is applied, for example, when the space in the scene region is small, and there are many scraps, such as in a room, The distance is appropriately reduced, and for example, when the space in the scene area is large, such as at a station or other outdoor scene, the distance can be appropriately increased.
- the beneficial effect of the embodiment is that the processing manner of the segmentation area can realize the distinction between different obstacles. At the same time, the processing manner of the segmentation area can also distinguish the reflection signals of different human bodies, so as to achieve simultaneous measurement by multiple people.
- FIG. 7 is a flowchart of a seventh embodiment of the heart rate measuring method according to an embodiment of the present invention.
- a heart rate measurement method provided by this embodiment is different from Embodiment 6.
- the signal analysis module 40 extracts the ECG signal according to the echo signal, and obtains the heart rate measurement data according to the ECG signal, and further includes:
- S43 Determine a reflection source that generates the echo signal according to a phase characteristic of the echo signal, and determine heart rate data according to an echo signal of the reflection source.
- the echo signal of a stationary object is usually time-invariant, and the echo signal generated by the human body due to its own motion, respiratory rhythm, etc., is usually time-varying.
- the moving human body and the stationary human body can be further identified.
- each person's echo signal is extracted from the echo signal generated by the human body:
- the phase of the echo signal is used to determine the discrimination of different human bodies.
- the wavelength used in this embodiment is 5 cm.
- the echo signal can be considered to be reflected back by the same human body. It can be understood that if the phases of the N sets of signals in the echo signal are varied within a certain range thereof, the echo signals corresponding to the N individuals in the space to be tested can be respectively determined.
- the processing method adopted in this embodiment is that the Fourier transform is first used to extract the time domain waveform in a specific frequency band; then, the digital filter is used to perform the waveform in the specific frequency band. Filter to remove noise. specific:
- the window length is 30 seconds
- the frequency band in which the heart rate is located is a reserved frequency band, and the inverse Fourier transform is performed on the signal in the reserved frequency band to obtain a time domain signal corresponding to the reserved frequency band;
- the heart rate data is extracted from the ECG signal.
- the beneficial effect of the embodiment is that by using the electromagnetic wave echo signal to simultaneously detect and analyze the multi-person heart rate, the heart rate and the photoelectric method can be avoided to measure the heart rate deficiency, and a non-intrusive measuring device is provided, which eliminates the user to be tested.
- the inconvenience of wearing is convenient for test deployment.
- the present embodiment is applicable to an environment such as a home or a workplace, and can perform heart rate measurement operations on multiple people simultaneously in a self-determined, accurate, real-time, and non-sensing situation. Taking the heart rate band as the benchmark, the accuracy of this program is within plus or minus 5%, and the accuracy rate is high.
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Abstract
A heart rate measurement device and method, the method comprising: generating fixed frequency band electromagnetic waves by an internal oscillating module (10); transmitting, by an electromagnetic wave transmitting probe (20), the electromagnetic waves to a region to be detected; receiving, by an echo signal acquiring probe (30), echo signals reflected by a reflection source and sending the echo signals to a signal analyzing module (40); extracting, by the signal analyzing module (40), electrocardiosignals according to the echo signals and acquiring heart rate measurement data according to the electrocardiosignals. The described non-intrusive measurement method can overcome defects of electrocardio and photoelectric methods in heart rate measurement, avoid inconvenience in wearing for a user to be measured, and facilitate test deployment. The heart rate measurement device and method are suitable for environments of households, working places and the like and capable of carrying out heart rate measurement on a plurality of users at the same time in an automatic, accurate, real-time and non-intrusive way.
Description
本发明实施方式涉及医疗仪器技术领域,特别是涉及一种心率测量装置和方法。Embodiments of the present invention relate to the field of medical instrument technology, and in particular, to a heart rate measuring device and method.
现有技术中,比较常用的心率测量仪器有:基于光纤光栅传感器的测量仪器、血压计、基于光电智能脉搏的测量仪器、心电测量仪器等,上述仪器都是基于以下四种原理:In the prior art, the commonly used heart rate measuring instruments include: a fiber grating sensor-based measuring instrument, a blood pressure meter, a photoelectric intelligent pulse-based measuring instrument, an electrocardiographic measuring instrument, etc., and the above instruments are based on the following four principles:
1.压力原理Pressure principle
在一个心搏间期中,动脉血管内的压力会随着心脏的舒缩发生周期性波动。采用压力传感器测量出这种压力的变化,经过放大电路、滤波电路、微处理器处理后就可以计算出心率。这种方法往往和测血压连用,而且使用时需要气泵,血压计一般采用这种方法测量心率。During a heartbeat period, the pressure within the arteries fluctuates periodically as the heart contracts. The pressure sensor is used to measure the change of the pressure, and the heart rate can be calculated after being processed by the amplifier circuit, the filter circuit, and the microprocessor. This method is often used in conjunction with blood pressure measurement, and requires an air pump when used. The sphygmomanometer generally uses this method to measure heart rate.
2.电阻原理2. Resistance principle
人体动脉血的电阻会随着血液流动而发生变化,通过这种变化就能提取出心率来。但是皮肤对这种方法的影响很大,而且时间不同被测试者不同测量结果也会受到不同程度的影响,所以一般不采用这种方法测量心率。The electrical resistance of the human arterial blood changes with the flow of blood, and the heart rate can be extracted by this change. However, the skin has a great influence on this method, and different measurement results of different time-tested subjects are affected to varying degrees, so this method is generally not used to measure heart rate.
3.心电原理3. ECG principle
这是目前医学上采用最多也是最准确的一种方法,它不仅能够测量出心率,而且能够精确的获得多种心电参数。心电描记(ECG,electrocardiogram)是测量和诊断异常心脏节律的最好的方法。采用ECG测量心率的仪器主要是心电测量仪。This is currently the most widely used and most accurate method in medicine. It can not only measure heart rate, but also accurately obtain a variety of ECG parameters. Electrocardiogram (ECG) is the best way to measure and diagnose abnormal heart rhythms. The instrument that uses ECG to measure heart rate is mainly an electrocardiograph.
4.光电原理4. Photoelectric principle
人体心脏充血和放血的过程,血管中的血容量和流速都会发生变
化,就会影响其对光的反射率,通过这一原理,人们研究出了一种基于光电的心率测量方法。这种方法一般采用含有红外发射和红外接收二极管的光电传感器采集脉搏信息,通过放大电路和信号处理,计算出心率。采集心率的部位一般为指尖或耳廓。The process of blood filling and blood flow in the human heart, the blood volume and flow rate in the blood vessels will change.
It will affect its reflectivity to light. Through this principle, a photoelectric-based heart rate measurement method has been developed. This method generally uses a photoelectric sensor including an infrared emitting and infrared receiving diode to collect pulse information, and calculates a heart rate through an amplifying circuit and signal processing. The part where the heart rate is collected is generally the fingertip or the auricle.
上述四种测量方式中,前两种方式需用被测用户佩戴仪器测量,较为不便,而后两种主动方式也存在以下的不足:Among the above four measurement methods, the first two methods need to be measured by the user under test, which is inconvenient, and the latter two active methods also have the following deficiencies:
目前主动测量心率的分析装置使用较多的是心电(ECG,electrocardiogram)和光电(PPG,photoplethysmographg)形式,其中:At present, the analysis devices that actively measure heart rate are mostly in the form of ECG (electrocardiogram) and photoelectric (PPG, photoplethysmographg), among which:
PPG形式通过光电容积脉搏波描记法测量血液对于光的吸收率,进而计算出心率;而ECG形式则是通过导联构成生物电的闭合回路来测量生物电的变化,进而计算出心率。In the PPG format, the blood absorption rate of light is measured by photoplethysmography, and the heart rate is calculated. The ECG form measures the change of bioelectricity through a closed loop of bioelectricity in the lead, and then calculates the heart rate.
但是,PPG方法的缺点是心率准确度较差,容易受到其他光线的干扰,以及佩戴时皮肤汗液的影响;而ECG方法的缺点则是测量设备佩戴较为复杂,需要形成闭合回路,不方便日常佩戴。However, the shortcomings of the PPG method are poor heart rate accuracy, easy to be interfered by other light, and the influence of skin sweat when worn. The disadvantage of the ECG method is that the measuring device is more complicated to wear and needs to form a closed loop, which is not convenient for daily wear. .
鉴于此,克服上述现有技术所存在的技术缺陷是本技术领域亟待解决的问题。In view of this, overcoming the technical deficiencies existing in the prior art described above is an urgent problem to be solved in the technical field.
发明内容Summary of the invention
本发明实施方式主要解决的技术问题是提供一种心率测量装置和方法,能够给用户带来一种用户体验良好的非介入式的心率测量装置和相应的心率提取方法。The technical problem to be solved by the embodiments of the present invention is to provide a heart rate measuring device and method, which can provide a non-invasive heart rate measuring device with a good user experience and a corresponding heart rate extracting method.
为解决上述技术问题,本发明实施方式采用的一个技术方案是:提供一种心率测量装置。In order to solve the above technical problem, one technical solution adopted by the embodiment of the present invention is to provide a heart rate measuring device.
其中,本装置包括:内部振荡模块、电磁波发射探头、回波信号采集探头以及信号分析模块,其中:The device comprises: an internal oscillation module, an electromagnetic wave transmitting probe, an echo signal acquisition probe and a signal analysis module, wherein:
所述内部振荡模块用于产生固定频段的电磁波;The internal oscillation module is configured to generate electromagnetic waves in a fixed frequency band;
所述电磁波发射探头用于将所述电磁波发射至待测区域;The electromagnetic wave transmitting probe is configured to emit the electromagnetic wave to an area to be tested;
所述回波信号采集探头用于接收由反射源反射的回波信号,并将所
述回波信号发送至所述信号分析模块;The echo signal acquisition probe is configured to receive an echo signal reflected by the reflection source, and
Transmitting an echo signal to the signal analysis module;
所述信号分析模块用于根据所述回波信号提取心电信号,并根据所述心电信号获得心率测量数据。The signal analysis module is configured to extract an ECG signal according to the echo signal, and obtain heart rate measurement data according to the ECG signal.
优选的,所述内部振荡模块包括振荡器和配套电路,其中,所述振荡器用于产生交流信号,所述配套电路用于根据所述交流信号产生所述固定频段的电磁波。Preferably, the internal oscillation module includes an oscillator and a matching circuit, wherein the oscillator is used to generate an alternating current signal, and the matching circuit is configured to generate an electromagnetic wave of the fixed frequency band according to the alternating current signal.
优选的,所述电磁波发射探头采用频率调制载波发射所述电磁波,所述频率调制载波的发射频率为5.25GHz至7.25GHz,所述频率调制载波的发射周期为2毫秒。Preferably, the electromagnetic wave transmitting probe transmits the electromagnetic wave by using a frequency modulation carrier, the frequency modulation carrier has a transmission frequency of 5.25 GHz to 7.25 GHz, and the frequency modulation carrier has a transmission period of 2 milliseconds.
优选的,所述信号分析模块包括微处理单元、采样单元、放大单元、滤波单元,其中,所述微处理单元用于按特定时序执行信号分析指令,所述采样单元用于对所述回波信号执行采样处理,得到采样信号,所述放大单元用于对所述采样信号执行放大处理,所述滤波单元用于去除特定波形内的噪声。Preferably, the signal analysis module comprises a micro processing unit, a sampling unit, an amplifying unit, and a filtering unit, wherein the micro processing unit is configured to execute a signal analysis instruction according to a specific timing, and the sampling unit is configured to use the echo The signal performs sampling processing to obtain a sampling signal, and the amplifying unit is configured to perform amplification processing on the sampling signal, and the filtering unit is configured to remove noise in a specific waveform.
优选的,所述信号分析模块还包括相位分析单元,所述相位分析单元用于根据所述回波信号的相位特征确定产生所述回波信号的反射源。Preferably, the signal analysis module further comprises a phase analysis unit, wherein the phase analysis unit is configured to determine a reflection source that generates the echo signal according to a phase characteristic of the echo signal.
为解决上述技术问题,本发明实施方式采用的另一个技术方案是:提供一种心率检测方法,本方法包括:In order to solve the above technical problem, another technical solution adopted by the embodiment of the present invention is to provide a heart rate detecting method, and the method includes:
由内部振荡模块产生电磁波;Electromagnetic waves are generated by an internal oscillation module;
电磁波发射探头将所述电磁波发射至待测区域;An electromagnetic wave transmitting probe emits the electromagnetic wave to an area to be tested;
回波信号采集探头接收由反射源反射的回波信号,并将所述回波信号发送至信号分析模块;The echo signal acquisition probe receives the echo signal reflected by the reflection source, and sends the echo signal to the signal analysis module;
所述信号分析模块根据所述回波信号提取心电信号,并根据所述心电信号获得心率测量数据。The signal analysis module extracts an electrocardiographic signal according to the echo signal, and obtains heart rate measurement data according to the ECG signal.
优选的,所述电磁波发射探头将所述电磁波发射至待测区域包括:Preferably, the electromagnetic wave transmitting probe transmitting the electromagnetic wave to the area to be tested comprises:
所述电磁波发射探头采用频率调制载波发射所述电磁波,所述频率调制载波的发射频率为5.25GHz至7.25GHz,所述频率调制载波的发射周期为2毫秒。The electromagnetic wave transmitting probe transmits the electromagnetic wave by using a frequency modulation carrier. The frequency modulation carrier has a transmission frequency of 5.25 GHz to 7.25 GHz, and the frequency modulation carrier has a transmission period of 2 milliseconds.
优选的,所述信号分析模块根据所述回波信号提取心电信号,并根
据所述心电信号获得心率测量数据包括:Preferably, the signal analysis module extracts an ECG signal according to the echo signal, and further includes
Obtaining heart rate measurement data according to the ECG signal includes:
根据所述载波信号的发射时间以及所述回波信号的接收时间确定所述电磁波的反射时间;Determining a reflection time of the electromagnetic wave according to a transmission time of the carrier signal and a reception time of the echo signal;
优选的,所述信号分析模块根据所述回波信号提取心电信号,并根据所述心电信号获得心率测量数据还包括:Preferably, the signal analysis module extracts an electrocardiogram signal according to the echo signal, and obtains heart rate measurement data according to the ECG signal, further comprising:
根据所述反射时间将所述载波信号划分为不同的片区,以区分由不同的障碍物以及不同的人体所产生的回波信号。The carrier signal is divided into different regions according to the reflection time to distinguish echo signals generated by different obstacles and different human bodies.
优选的,所述信号分析模块根据所述回波信号提取心电信号,并根据所述心电信号获得心率测量数据还包括:Preferably, the signal analysis module extracts an electrocardiogram signal according to the echo signal, and obtains heart rate measurement data according to the ECG signal, further comprising:
根据所述回波信号的相位特征确定产生所述回波信号的反射源,并根据所述反射源的回波信号确定心率数据。A reflection source that generates the echo signal is determined according to a phase characteristic of the echo signal, and heart rate data is determined according to an echo signal of the reflection source.
与现有技术相比,本发明的有益效果在于:提供一种非介入式测量装置和相应的心率提取方法,免去待测用户佩戴的不便,便于测试部署,本发明适用于家中、工作场所等环境,可以实现自行、准确、实时、无感知的情况下,对多人同时进行心率测量操作。Compared with the prior art, the present invention has the beneficial effects of providing a non-invasive measuring device and a corresponding heart rate extraction method, which is free from inconvenience of being worn by the user to be tested, and is convenient for test deployment. The present invention is applicable to a home or a workplace. Such as the environment, you can achieve heart rate measurement operation for multiple people at the same time in self-accurate, accurate, real-time, and non-perceived situations.
图1是本发明实施例提供的心率测量装置第一实施例结构示意图;1 is a schematic structural view of a first embodiment of a heart rate measuring device according to an embodiment of the present invention;
图2是本发明实施例提供的心率测量装置第二实施例结构示意图;2 is a schematic structural diagram of a second embodiment of a heart rate measuring device according to an embodiment of the present invention;
图3是本发明实施例提供的心率测量装置第三实施例结构示意图;3 is a schematic structural diagram of a third embodiment of a heart rate measuring device according to an embodiment of the present invention;
图4是本发明实施例提供的心率测量方法第四实施例流程图;4 is a flowchart of a fourth embodiment of a heart rate measurement method according to an embodiment of the present invention;
图5是本发明实施例提供的心率测量方法第五实施例流程图;FIG. 5 is a flowchart of a fifth embodiment of a heart rate measurement method according to an embodiment of the present invention; FIG.
图6是本发明实施例提供的心率测量方法第六实施例流程图;6 is a flowchart of a sixth embodiment of a heart rate measurement method according to an embodiment of the present invention;
图7是本发明实施例提供的心率测量方法第七实施例流程图。FIG. 7 is a flowchart of a seventh embodiment of a heart rate measurement method according to an embodiment of the present invention.
为了使本发明的目的、技术方案以及优点更加清楚明白,以下结合附图及实施例,对本发明进行进一步详细说明。应当理解,此处所描述的具体实施例仅仅用以解释本发明,并不用于限定本发明。
The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
此外,下面所描述的本发明各个实施方式中所涉及到的技术特征只要彼此之间未构成冲突就可以相互结合。Further, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.
实施例1:Example 1:
本发明实施例1提供了心率检测装置的第一优选实施例,如图1所示为本发明实施例提供的心率测量装置第一实施例结构示意图。The first embodiment of the present invention provides a first preferred embodiment of a heart rate detecting device. FIG. 1 is a schematic structural view of a first embodiment of a heart rate measuring device according to an embodiment of the present invention.
参阅图1,本实施例提供的一种心率测量装置,本装置包括:内部振荡模块10、电磁波发射探头20、回波信号采集探头30以及信号分析模块40。Referring to FIG. 1 , a heart rate measuring device provided by this embodiment includes: an internal oscillation module 10 , an electromagnetic wave transmitting probe 20 , an echo signal acquiring probe 30 , and a signal analyzing module 40 .
可以理解的是,本装置的各个模块可以集成于一个壳体之内,并与匹配的电源模块、通信模块等基础模块构成一心率测量设备。该设备可设置于公共场所,用于测试覆盖区域内的人体心率,例如,学校、医院、车站等,或者可以设置于家庭中,用于检测家庭成员的心率数据。It can be understood that each module of the device can be integrated into one housing and form a heart rate measuring device with a matching power module, a communication module and the like. The device can be placed in a public place to test the heart rate of the human body in the coverage area, for example, a school, a hospital, a station, etc., or can be set in a home for detecting heart rate data of family members.
具体的,本装置的内部振荡模块10用于产生固定频段的电磁波;Specifically, the internal oscillation module 10 of the device is configured to generate electromagnetic waves in a fixed frequency band;
电磁波发射探头20用于将电磁波发射至待测区域;The electromagnetic wave transmitting probe 20 is configured to emit electromagnetic waves to the area to be tested;
回波信号采集探头30用于接收由反射源反射的回波信号,并将回波信号发送至信号分析模块40;The echo signal acquisition probe 30 is configured to receive the echo signal reflected by the reflection source, and send the echo signal to the signal analysis module 40;
信号分析模块40用于根据回波信号提取心电信号,并根据心电信号获得心率测量数据。The signal analysis module 40 is configured to extract an ECG signal according to the echo signal, and obtain heart rate measurement data according to the ECG signal.
优选的,当待测环境中,反射源处于特定位置区域时,本方案可以直接根据反射源所产生的回波信号进行分析,得到与该反射源相对应的心率数据。Preferably, when the reflection source is in a specific location area in the environment to be tested, the solution may directly analyze the echo signal generated by the reflection source to obtain heart rate data corresponding to the reflection source.
优选的,当待测环境中,反射源的位置不特定,那么所接受到回波信号无法与反射源建立对应关系,因此,信号分析模块40还用于,根据回波信号的相位特征确定产生回波信号的反射源,具体的:Preferably, when the position of the reflection source is not specified in the environment to be tested, the received echo signal cannot be associated with the reflection source. Therefore, the signal analysis module 40 is further configured to determine the phase characteristic according to the echo signal. The reflection source of the echo signal, specifically:
1、分析载波信号在待测空间中的反射情况:1. Analyze the reflection of the carrier signal in the space to be tested:
可以理解的是,待测空间可以是家庭里的客厅、车站的候车室等空间区域,因此,由电磁波发射探头20发出的载波信号在待测空间内传输的过程中,将会受到三大类障碍物的反射:墙体等建筑结构、柜子等静止物品、以及人体。其中,前两类障碍物为静止物体,而人体的运动
状态不定。由于处于待测空间内的这三大类障碍物均会对载波信号产生反射,因此,这些障碍物所产生的回波信号中包含了由人体所产生的心率信号和其它干扰信号。It can be understood that the space to be tested may be a living area such as a living room in a home or a waiting room of a station. Therefore, the carrier signal emitted by the electromagnetic wave transmitting probe 20 will be subjected to three major categories in the process of transmitting in the space to be tested. Reflection of obstacles: building structures such as walls, stationary objects such as cabinets, and human bodies. Among them, the first two types of obstacles are stationary objects, and the movement of the human body
The status is uncertain. Since the three types of obstacles in the space to be tested reflect the carrier signal, the echo signals generated by these obstacles include heart rate signals and other interference signals generated by the human body.
优选的,电磁波发射探头20采用频率调制载波发射电磁波,频率调制载波的发射频率为5.25GHz至7.25GHz,频率调制载波的发射周期为2毫秒。Preferably, the electromagnetic wave transmitting probe 20 emits electromagnetic waves using a frequency modulated carrier, the frequency of the frequency modulated carrier is 5.25 GHz to 7.25 GHz, and the transmission period of the frequency modulated carrier is 2 milliseconds.
2、分析由不同障碍物所产生的回波信号:2. Analyze the echo signals generated by different obstacles:
本实施例提出根据载波信号的反射时间,将反射回来的载波信号划分为不同的片区,其中,反射时间可以由载波信号的发送时刻和该载波信号经反射后的接收时刻之差确定。In this embodiment, the reflected carrier signal is divided into different regions according to the reflection time of the carrier signal, wherein the reflection time can be determined by the difference between the transmission timing of the carrier signal and the received reception time of the carrier signal.
优选的,当两个物体相距小于10厘米时,将其对应的反射回来的载波信号划为相同片区,而当两个物体相距大于或等于10厘米时,则将其对应的反射回来的载波信号划为不同片区,其中,用于判定的两个物体之间的距离可以根据本实施例所适用的场景确定,例如,当场景区域内的空间较小,零碎物品较多,如在房间时,可以适当减小该距离,又例如,当场景区域内的空间较大,如在车站或者其它室外场景时,可以适当增大该距离。Preferably, when the two objects are less than 10 cm apart, the corresponding reflected carrier signal is divided into the same area, and when the two objects are separated by more than or equal to 10 cm, the corresponding reflected carrier signal is obtained. Divided into different regions, wherein the distance between the two objects for determination can be determined according to the scenario to which the embodiment is applied, for example, when the space in the scene region is small, and there are many scraps, such as in a room, The distance is appropriately reduced, and for example, when the space in the scene area is large, such as at a station or other outdoor scene, the distance can be appropriately increased.
分片区的处理方式可以实现对不同障碍物的区分,同时,分片区的处理方式还可以区分不同人体的反射信号,以实现多人同时测量。The processing method of the segmentation area can realize the distinction between different obstacles. At the same time, the processing method of the segmentation area can also distinguish the reflection signals of different human bodies, so as to achieve simultaneous measurement by multiple people.
3、在由不同的障碍物所产生的回波信号中提取由人体所产生的回波信号:3. Extract the echo signals generated by the human body from the echo signals generated by different obstacles:
首先,我们需要理解的是,静止物体的回波信号通常是时不变的,而人体由于自身运动、呼吸节律等影响,产生的回波信号通常是时变的。First of all, we need to understand that the echo signal of a stationary object is usually time-invariant, and the echo signal generated by the human body due to its own motion, respiratory rhythm, etc., is usually time-varying.
其次,处于近似静止的人体,比如写字台前办公、睡觉、看电视等,回波信号的变化较小;处于运动的人体,比如走路、摆动胳膊等运动,由于运动的偶发性,将会使得较为规律的回波信号产生突变。Secondly, in the human body that is almost stationary, such as working in front of a desk, sleeping, watching TV, etc., the echo signal changes little; the moving human body, such as walking, swinging arms, etc., due to the sporadic movement, will make Regular echo signals produce mutations.
因此,根据回波信号是否存在小范围变化以及突变,可以将运动人体和静止人体进一步鉴别出来。
Therefore, according to whether the echo signal has a small range change and a mutation, the moving human body and the stationary human body can be further identified.
4、在由人体所产生的回波信号中提取每个人的回波信号:4. Extract each person's echo signal from the echo signal generated by the human body:
本实施例利用回波信号的相位进行不同人体的区分判定。In this embodiment, the phase of the echo signal is used to determine the discrimination of different human bodies.
首先,将信号相位定义为其中d(t)表示回波的传输距离,λ表示探测波的波长。First, define the signal phase as Where d(t) represents the transmission distance of the echo and λ represents the wavelength of the detected wave.
优选的,本实施例使用的波长为5厘米。Preferably, the wavelength used in this embodiment is 5 cm.
当回波信号采集探头30接收到的回波信号的相位在一定范围内变化,并且出现较为固定的周期性变化时,可认为此回波信号是由同一人体反射回来。可以理解的是,如果回波信号中,有N组信号的相位是在其各自一定范围内变化,那么可以分别确定此待测空间内N个人各自对应的回波信号。When the phase of the echo signal received by the echo signal acquisition probe 30 changes within a certain range and a relatively periodic change occurs, the echo signal can be considered to be reflected back by the same human body. It can be understood that if the phases of the N sets of signals in the echo signal are varied within a certain range thereof, the echo signals corresponding to the N individuals in the space to be tested can be respectively determined.
5、分析每个人的回波信号,获得每个人的心率测量数据:5. Analyze each person's echo signal to obtain heart rate measurement data for each person:
本实施例所采用的处理方式是,首先采用傅里叶变换,提取特定频段内的时域波形;然后,采用数字滤波器,对该特定频段内的波形进行滤波,去除噪声。具体的:The processing method adopted in this embodiment is that the Fourier transform is first used to extract the time domain waveform in a specific frequency band; then, the digital filter is used to filter the waveform in the specific frequency band to remove noise. specific:
a、对回波载波进行加窗处理,窗口长度为30秒;a, window processing on the echo carrier, the window length is 30 seconds;
b、将窗口内数据进行傅里叶变换,得到该波形对应的频域表示;b, performing Fourier transform on the data in the window to obtain a frequency domain representation corresponding to the waveform;
c、心率所处频段为保留频段,对保留频段内的信号进行傅里叶逆变换,得到保留频段对应的时域信号;c. The frequency band in which the heart rate is located is a reserved frequency band, and the inverse Fourier transform is performed on the signal in the reserved frequency band to obtain a time domain signal corresponding to the reserved frequency band;
d、对该时域信号进行数字滤波,得到干净的心电信号;d. digitally filtering the time domain signal to obtain a clean ECG signal;
e、采用波峰检测法,对该心电信号进行心率数据提取。e. Using the peak detection method, the heart rate data is extracted from the ECG signal.
本实施例的有益效果在于,通过利用电磁波回波信号对多人心率同时检测和分析,能够避免心电和光电法测量心率的不足,提供了一种非介入式测量装置,免去待测用户佩戴的不便,便于测试部署,本实施方案适用于家中、工作场所等环境,可以实现自行、准确、实时、无感知的情况下,对多人同时进行心率测量操作。以心率带作为比较基准,本方案的准确率为正负5%之内,准确率较高。
The beneficial effect of the embodiment is that by using the electromagnetic wave echo signal to simultaneously detect and analyze the multi-person heart rate, the heart rate and the photoelectric method can be avoided to measure the heart rate deficiency, and a non-intrusive measuring device is provided, which eliminates the user to be tested. The inconvenience of wearing is convenient for test deployment. The present embodiment is applicable to an environment such as a home or a workplace, and can perform heart rate measurement operations on multiple people simultaneously in a self-determined, accurate, real-time, and non-sensing situation. Taking the heart rate band as the benchmark, the accuracy of this program is within plus or minus 5%, and the accuracy rate is high.
实施例二Embodiment 2
本发明实施例2提供了心率检测装置的第二优选实施例,如图2所示为本发明实施例提供的心率测量装置第二实施例结构示意图。The second embodiment of the present invention provides a second preferred embodiment of the heart rate detecting device. FIG. 2 is a schematic structural view of a second embodiment of the heart rate measuring device according to an embodiment of the present invention.
参阅图2,本实施例提供的一种心率测量装置,与实施例1的区别在于,本实施例的内部振荡模块10包括振荡器11和配套电路12,其中,所述振荡器10用于产生交流信号,所述配套电路12用于根据所述交流信号产生所述固定频段的电磁波。Referring to FIG. 2, a heart rate measuring device provided by this embodiment differs from Embodiment 1 in that the internal oscillation module 10 of the present embodiment includes an oscillator 11 and a matching circuit 12, wherein the oscillator 10 is used to generate An AC signal, the matching circuit 12 is configured to generate an electromagnetic wave of the fixed frequency band according to the AC signal.
实施例三Embodiment 3
本发明实施例3提供了心率检测装置的第三优选实施例,如图3所示为本发明实施例提供的心率测量装置第三实施例结构示意图。The third embodiment of the present invention provides a third preferred embodiment of the heart rate detecting device. FIG. 3 is a schematic structural view of a third embodiment of the heart rate measuring device according to the embodiment of the present invention.
参阅图3,本实施例提供的一种心率测量装置,与实施例1的区别在于,本实施例的信号分析模块40包括微处理单元41、采样单元42、放大单元43和滤波单元44。其中,微处理单元41用于按特定时序执行信号分析指令,采样单元42用于对回波信号执行采样处理,得到采样信号,放大单元43用于对采样信号执行放大处理,滤波单元44用于去除特定波形内的噪声。Referring to FIG. 3, a heart rate measuring device provided by this embodiment differs from Embodiment 1 in that the signal analyzing module 40 of the present embodiment includes a micro processing unit 41, a sampling unit 42, an amplifying unit 43, and a filtering unit 44. The micro processing unit 41 is configured to execute a signal analysis instruction according to a specific timing, the sampling unit 42 is configured to perform sampling processing on the echo signal, to obtain a sampling signal, the amplifying unit 43 is configured to perform amplification processing on the sampling signal, and the filtering unit 44 is configured to Remove noise within a specific waveform.
实施例四Embodiment 4
本发明实施例4提供了心率检测方法的第四优选实施例,如图4所示为本发明实施例提供的心率测量方法第四实施例流程图。The fourth embodiment of the present invention provides a fourth preferred embodiment of the heart rate detecting method. FIG. 4 is a flowchart of a fourth embodiment of the heart rate measuring method according to an embodiment of the present invention.
参阅图4,本实施例提供的一种心率测量方法,本方法包括:Referring to FIG. 4, a heart rate measurement method provided by this embodiment includes:
S1、由内部振荡模块10产生电磁波;S1, an electromagnetic wave is generated by the internal oscillation module 10;
S2、电磁波发射探头20将电磁波发射至待测区域;S2. The electromagnetic wave transmitting probe 20 emits electromagnetic waves to the area to be tested;
S3、回波信号采集探头30接收由反射源反射的回波信号,并将所述回波信号发送至信号分析模块40;S3, the echo signal acquisition probe 30 receives the echo signal reflected by the reflection source, and sends the echo signal to the signal analysis module 40;
S4、信号分析模块40根据回波信号提取心电信号,并根据心电信号获得心率测量数据。
S4. The signal analysis module 40 extracts an ECG signal according to the echo signal, and obtains heart rate measurement data according to the ECG signal.
可以理解的是,本实施例方法步骤中所涉及的各个模块可以集成于一个壳体之内,并与匹配的电源模块、通信模块等基础模块构成一心率测量设备。该设备可设置于公共场所,用于测试覆盖区域内的人体心率,例如,学校、医院、车站等,或者可以设置于家庭中,用于检测家庭成员的心率数据。It can be understood that each module involved in the method steps of the embodiment may be integrated into one housing, and constitute a heart rate measuring device with a matching power module, a communication module and the like. The device can be placed in a public place to test the heart rate of the human body in the coverage area, for example, a school, a hospital, a station, etc., or can be set in a home for detecting heart rate data of family members.
本实施例的有益效果是,通过利用电磁波回波信号对多人心率同时检测和分析,能够避免心电和光电法测量心率的不足,提供了一种非介入式测量装置,免去待测用户佩戴的不便,便于测试部署,本实施方案适用于家中、工作场所等环境,可以实现自行、准确、实时、无感知的情况下,对多人同时进行心率测量操作。The beneficial effect of the embodiment is that by using the electromagnetic wave echo signal to simultaneously detect and analyze the multi-person heart rate, the heart rate and the photoelectric method can be avoided to measure the heart rate deficiency, and a non-intrusive measuring device is provided, thereby eliminating the user to be tested. The inconvenience of wearing is convenient for test deployment. The present embodiment is applicable to an environment such as a home or a workplace, and can perform heart rate measurement operations on multiple people simultaneously in a self-determined, accurate, real-time, and non-sensing situation.
实施例五Embodiment 5
本发明实施例5提供了心率检测方法的第五优选实施例,如图5所示为本发明实施例提供的心率测量方法第五实施例流程图。The fifth embodiment of the present invention provides a fifth preferred embodiment of the heart rate detecting method. FIG. 5 is a flowchart of a fifth embodiment of the heart rate measuring method according to an embodiment of the present invention.
参阅图5,本实施例提供的一种心率测量方法,与实施例4的区别在于,信号分析模块40根据回波信号提取心电信号,并根据心电信号获得心率测量数据包括:Referring to FIG. 5, a heart rate measurement method provided by this embodiment differs from Embodiment 4 in that the signal analysis module 40 extracts an ECG signal according to an echo signal, and obtains heart rate measurement data according to the ECG signal, including:
S41、根据所述载波信号的发射时间以及所述回波信号的接收时间确定所述电磁波的反射时间。S41. Determine a reflection time of the electromagnetic wave according to a transmission time of the carrier signal and a reception time of the echo signal.
可以理解的是,待测空间可以是家庭里的客厅、车站的候车室等空间区域,因此,由电磁波发射探头20发出的载波信号在待测空间内传输的过程中,将会受到三大类障碍物的反射:墙体等建筑结构、柜子等静止物品、以及人体。其中,前两类障碍物为静止物体,而人体的运动状态不定。由于处于待测空间内的这三大类障碍物均会对载波信号产生反射,因此,这些障碍物所产生的回波信号中包含了由人体所产生的心率信号和其它干扰信号。It can be understood that the space to be tested may be a living area such as a living room in a home or a waiting room of a station. Therefore, the carrier signal emitted by the electromagnetic wave transmitting probe 20 will be subjected to three major categories in the process of transmitting in the space to be tested. Reflection of obstacles: building structures such as walls, stationary objects such as cabinets, and human bodies. Among them, the first two types of obstacles are stationary objects, and the movement state of the human body is uncertain. Since the three types of obstacles in the space to be tested reflect the carrier signal, the echo signals generated by these obstacles include heart rate signals and other interference signals generated by the human body.
优选的,电磁波发射探头20采用频率调制载波发射电磁波,频率调制载波的发射频率为5.25GHz至7.25GHz,频率调制载波的发射周期为2毫秒。
Preferably, the electromagnetic wave transmitting probe 20 emits electromagnetic waves using a frequency modulated carrier, the frequency of the frequency modulated carrier is 5.25 GHz to 7.25 GHz, and the transmission period of the frequency modulated carrier is 2 milliseconds.
本实施例有益效果是,可以分析得到载波信号在待测空间中的反射情况。The beneficial effect of this embodiment is that the reflection of the carrier signal in the space to be tested can be analyzed.
实施例六Embodiment 6
本发明实施例6提供了心率检测方法的第六优选实施例,如图6所示为本发明实施例提供的心率测量方法第六实施例流程图。The sixth embodiment of the present invention provides a sixth preferred embodiment of the heart rate detecting method. FIG. 6 is a flowchart of a sixth embodiment of the heart rate measuring method according to an embodiment of the present invention.
参阅图6,本实施例提供的一种心率测量方法,与实施例5的区别在于,信号分析模块40根据回波信号提取心电信号,并根据心电信号获得心率测量数据还包括:Referring to FIG. 6 , a heart rate measurement method provided by this embodiment is different from Embodiment 5 in that the signal analysis module 40 extracts an ECG signal according to an echo signal, and obtains heart rate measurement data according to the ECG signal, and further includes:
S42、根据所述反射时间将所述载波信号划分为不同的片区,以区分由不同的障碍物以及不同的人体所产生的回波信号。S42. Divide the carrier signal into different regions according to the reflection time to distinguish echo signals generated by different obstacles and different human bodies.
本实施例提出根据载波信号的反射时间,将反射回来的载波信号划分为不同的片区,其中,反射时间可以由载波信号的发送时刻和该载波信号经反射后的接收时刻之差确定。In this embodiment, the reflected carrier signal is divided into different regions according to the reflection time of the carrier signal, wherein the reflection time can be determined by the difference between the transmission timing of the carrier signal and the received reception time of the carrier signal.
优选的,当两个物体相距小于10厘米时,将其对应的反射回来的载波信号划为相同片区,而当两个物体相距大于或等于10厘米时,则将其对应的反射回来的载波信号划为不同片区,其中,用于判定的两个物体之间的距离可以根据本实施例所适用的场景确定,例如,当场景区域内的空间较小,零碎物品较多,如在房间时,可以适当减小该距离,又例如,当场景区域内的空间较大,如在车站或者其它室外场景时,可以适当增大该距离。Preferably, when the two objects are less than 10 cm apart, the corresponding reflected carrier signal is divided into the same area, and when the two objects are separated by more than or equal to 10 cm, the corresponding reflected carrier signal is obtained. Divided into different regions, wherein the distance between the two objects for determination can be determined according to the scenario to which the embodiment is applied, for example, when the space in the scene region is small, and there are many scraps, such as in a room, The distance is appropriately reduced, and for example, when the space in the scene area is large, such as at a station or other outdoor scene, the distance can be appropriately increased.
本实施例的有益效果是,分片区的处理方式可以实现对不同障碍物的区分,同时,分片区的处理方式还可以区分不同人体的反射信号,以实现多人同时测量。The beneficial effect of the embodiment is that the processing manner of the segmentation area can realize the distinction between different obstacles. At the same time, the processing manner of the segmentation area can also distinguish the reflection signals of different human bodies, so as to achieve simultaneous measurement by multiple people.
实施例七Example 7
本发明实施例7提供了心率检测方法的第七优选实施例,如图7所示为本发明实施例提供的心率测量方法第七实施例流程图。The seventh embodiment of the present invention provides a seventh preferred embodiment of the heart rate detecting method. FIG. 7 is a flowchart of a seventh embodiment of the heart rate measuring method according to an embodiment of the present invention.
参阅图7,本实施例提供的一种心率测量方法,与实施例6的区别
在于,信号分析模块40根据回波信号提取心电信号,并根据心电信号获得心率测量数据还包括:Referring to FIG. 7, a heart rate measurement method provided by this embodiment is different from Embodiment 6.
The signal analysis module 40 extracts the ECG signal according to the echo signal, and obtains the heart rate measurement data according to the ECG signal, and further includes:
S43、根据所述回波信号的相位特征确定产生所述回波信号的反射源,并根据所述反射源的回波信号确定心率数据。S43. Determine a reflection source that generates the echo signal according to a phase characteristic of the echo signal, and determine heart rate data according to an echo signal of the reflection source.
1、根据所述回波信号的相位特征确定产生所述回波信号的反射源:1. Determining a reflection source that generates the echo signal according to a phase characteristic of the echo signal:
首先,我们需要理解的是,静止物体的回波信号通常是时不变的,而人体由于自身运动、呼吸节律等影响,产生的回波信号通常是时变的。First of all, we need to understand that the echo signal of a stationary object is usually time-invariant, and the echo signal generated by the human body due to its own motion, respiratory rhythm, etc., is usually time-varying.
其次,处于近似静止的人体,比如写字台前办公、睡觉、看电视等,回波信号的变化较小;处于运动的人体,比如走路、摆动胳膊等运动,由于运动的偶发性,将会使得较为规律的回波信号产生突变。Secondly, in the human body that is almost stationary, such as working in front of a desk, sleeping, watching TV, etc., the echo signal changes little; the moving human body, such as walking, swinging arms, etc., due to the sporadic movement, will make Regular echo signals produce mutations.
因此,根据回波信号是否存在小范围变化以及突变,可以将运动人体和静止人体进一步鉴别出来。Therefore, according to whether the echo signal has a small range change and a mutation, the moving human body and the stationary human body can be further identified.
最后,在由人体所产生的回波信号中提取每个人的回波信号:Finally, each person's echo signal is extracted from the echo signal generated by the human body:
本实施例利用回波信号的相位进行不同人体的区分判定。In this embodiment, the phase of the echo signal is used to determine the discrimination of different human bodies.
首先,将信号相位定义为其中d(t)表示回波的传输距离,λ表示探测波的波长。First, define the signal phase as Where d(t) represents the transmission distance of the echo and λ represents the wavelength of the detected wave.
优选的,本实施例使用的波长为5厘米。Preferably, the wavelength used in this embodiment is 5 cm.
当回波信号采集探头30接收到的回波信号的相位在一定范围内变化,并且出现较为固定的周期性变化时,可认为此回波信号是由同一人体反射回来。可以理解的是,如果回波信号中,有N组信号的相位是在其各自一定范围内变化,那么可以分别确定此待测空间内N个人各自对应的回波信号。When the phase of the echo signal received by the echo signal acquisition probe 30 changes within a certain range and a relatively periodic change occurs, the echo signal can be considered to be reflected back by the same human body. It can be understood that if the phases of the N sets of signals in the echo signal are varied within a certain range thereof, the echo signals corresponding to the N individuals in the space to be tested can be respectively determined.
2、根据所述反射源的回波信号确定心率数据:2. Determine heart rate data based on the echo signals of the reflected source:
具体的,分析每个人的回波信号,获得每个人的心率测量数据:Specifically, analyze each person's echo signal to obtain heart rate measurement data for each person:
本实施例所采用的处理方式是,首先采用傅里叶变换,提取特定频段内的时域波形;然后,采用数字滤波器,对该特定频段内的波形进行
滤波,去除噪声。具体的:The processing method adopted in this embodiment is that the Fourier transform is first used to extract the time domain waveform in a specific frequency band; then, the digital filter is used to perform the waveform in the specific frequency band.
Filter to remove noise. specific:
a、对回波载波进行加窗处理,窗口长度为30秒;a, window processing on the echo carrier, the window length is 30 seconds;
b、将窗口内数据进行傅里叶变换,得到该波形对应的频域表示;b, performing Fourier transform on the data in the window to obtain a frequency domain representation corresponding to the waveform;
c、心率所处频段为保留频段,对保留频段内的信号进行傅里叶逆变换,得到保留频段对应的时域信号;c. The frequency band in which the heart rate is located is a reserved frequency band, and the inverse Fourier transform is performed on the signal in the reserved frequency band to obtain a time domain signal corresponding to the reserved frequency band;
d、对该时域信号进行数字滤波,得到干净的心电信号;d. digitally filtering the time domain signal to obtain a clean ECG signal;
e、采用波峰检测法,对该心电信号进行心率数据提取。e. Using the peak detection method, the heart rate data is extracted from the ECG signal.
本实施例的有益效果在于,通过利用电磁波回波信号对多人心率同时检测和分析,能够避免心电和光电法测量心率的不足,提供了一种非介入式测量装置,免去待测用户佩戴的不便,便于测试部署,本实施方案适用于家中、工作场所等环境,可以实现自行、准确、实时、无感知的情况下,对多人同时进行心率测量操作。以心率带作为比较基准,本方案的准确率为正负5%之内,准确率较高。The beneficial effect of the embodiment is that by using the electromagnetic wave echo signal to simultaneously detect and analyze the multi-person heart rate, the heart rate and the photoelectric method can be avoided to measure the heart rate deficiency, and a non-intrusive measuring device is provided, which eliminates the user to be tested. The inconvenience of wearing is convenient for test deployment. The present embodiment is applicable to an environment such as a home or a workplace, and can perform heart rate measurement operations on multiple people simultaneously in a self-determined, accurate, real-time, and non-sensing situation. Taking the heart rate band as the benchmark, the accuracy of this program is within plus or minus 5%, and the accuracy rate is high.
以上所述仅为本发明的实施方式,并非因此限制本发明的专利范围,凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换,或直接或间接运用在其他相关的技术领域,均同理包括在本发明的专利保护范围内。
The above is only the embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the invention and the drawings are directly or indirectly applied to other related technologies. The fields are all included in the scope of patent protection of the present invention.
Claims (10)
- 一种心率测量装置,其特征在于,所述装置包括:内部振荡模块、电磁波发射探头、回波信号采集探头以及信号分析模块,其中:A heart rate measuring device, comprising: an internal oscillation module, an electromagnetic wave transmitting probe, an echo signal collecting probe, and a signal analyzing module, wherein:所述内部振荡模块用于产生固定频段的电磁波;The internal oscillation module is configured to generate electromagnetic waves in a fixed frequency band;所述电磁波发射探头用于将所述电磁波发射至待测区域;The electromagnetic wave transmitting probe is configured to emit the electromagnetic wave to an area to be tested;所述回波信号采集探头用于接收由反射源反射的回波信号,并将所述回波信号发送至所述信号分析模块;The echo signal acquisition probe is configured to receive an echo signal reflected by the reflection source, and send the echo signal to the signal analysis module;所述信号分析模块用于根据所述回波信号提取心电信号,并根据所述心电信号获得心率测量数据。The signal analysis module is configured to extract an ECG signal according to the echo signal, and obtain heart rate measurement data according to the ECG signal.
- 根据权利要求1所述的装置,其特征在于,所述内部振荡模块包括振荡器和配套电路,其中,所述振荡器用于产生交流信号,所述配套电路用于根据所述交流信号产生所述固定频段的电磁波。The apparatus according to claim 1, wherein said internal oscillation module comprises an oscillator and a companion circuit, wherein said oscillator is for generating an AC signal, and said companion circuit is for generating an AC signal according to said AC signal The electromagnetic wave of the fixed frequency band.
- 根据权利要求1所述的装置,其特征在于,所述电磁波发射探头采用频率调制载波发射所述电磁波,所述频率调制载波的发射频率为5.25GHz至7.25GHz,所述频率调制载波的发射周期为2毫秒。The apparatus according to claim 1, wherein said electromagnetic wave transmitting probe transmits said electromagnetic wave using a frequency modulated carrier, said frequency modulation carrier having a transmission frequency of 5.25 GHz to 7.25 GHz, said frequency modulation carrier transmitting period It is 2 milliseconds.
- 根据权利要求1所述的装置,其特征在于,所述信号分析模块包括微处理单元、采样单元、放大单元、滤波单元,其中,所述微处理单元用于按特定时序执行信号分析指令,所述采样单元用于对所述回波信号执行采样处理,得到采样信号,所述放大单元用于对所述采样信号执行放大处理,所述滤波单元用于去除特定波形内的噪声。The apparatus according to claim 1, wherein the signal analysis module comprises a micro processing unit, a sampling unit, an amplifying unit, and a filtering unit, wherein the micro processing unit is configured to execute a signal analysis instruction according to a specific timing. The sampling unit is configured to perform sampling processing on the echo signal to obtain a sampling signal, the amplifying unit is configured to perform an amplification process on the sampling signal, and the filtering unit is configured to remove noise in a specific waveform.
- 根据权利要求4所述的装置,其特征在于,所述信号分析模块还包括相位分析单元,所述相位分析单元用于根据所述回波信号的相位特征确定产生所述回波信号的反射源。 The apparatus according to claim 4, wherein said signal analysis module further comprises a phase analyzing unit, said phase analyzing unit configured to determine a reflection source for generating said echo signal based on a phase characteristic of said echo signal .
- 一种心率检测方法,其特征在于,包括:A heart rate detecting method, comprising:由内部振荡模块产生电磁波;Electromagnetic waves are generated by an internal oscillation module;电磁波发射探头将所述电磁波发射至待测区域;An electromagnetic wave transmitting probe emits the electromagnetic wave to an area to be tested;回波信号采集探头接收由反射源反射的回波信号,并将所述回波信号发送至信号分析模块;The echo signal acquisition probe receives the echo signal reflected by the reflection source, and sends the echo signal to the signal analysis module;所述信号分析模块根据所述回波信号提取心电信号,并根据所述心电信号获得心率测量数据。The signal analysis module extracts an electrocardiographic signal according to the echo signal, and obtains heart rate measurement data according to the ECG signal.
- 根据权利要求6所述的方法,其特征在于,所述电磁波发射探头将所述电磁波发射至待测区域包括:The method according to claim 6, wherein the electromagnetic wave transmitting probe transmits the electromagnetic wave to the area to be tested comprises:所述电磁波发射探头采用频率调制载波发射所述电磁波,所述频率调制载波的发射频率为5.25GHz至7.25GHz,所述频率调制载波的发射周期为2毫秒。The electromagnetic wave transmitting probe transmits the electromagnetic wave by using a frequency modulation carrier. The frequency modulation carrier has a transmission frequency of 5.25 GHz to 7.25 GHz, and the frequency modulation carrier has a transmission period of 2 milliseconds.
- 根据权利要求7所述的方法,其特征在于,所述信号分析模块根据所述回波信号提取心电信号,并根据所述心电信号获得心率测量数据包括:The method according to claim 7, wherein the signal analysis module extracts an electrocardiographic signal according to the echo signal, and obtains heart rate measurement data according to the ECG signal, including:根据所述载波信号的发射时间以及所述回波信号的接收时间确定所述电磁波的反射时间。The reflection time of the electromagnetic wave is determined according to a transmission time of the carrier signal and a reception time of the echo signal.
- 根据权利要求8所述的方法,其特征在于,所述信号分析模块根据所述回波信号提取心电信号,并根据所述心电信号获得心率测量数据还包括:The method according to claim 8, wherein the signal analysis module extracts an electrocardiographic signal according to the echo signal, and obtains heart rate measurement data according to the ECG signal, further comprising:根据所述反射时间将所述载波信号划分为不同的片区,以区分由不同的障碍物以及不同的人体所产生的回波信号。The carrier signal is divided into different regions according to the reflection time to distinguish echo signals generated by different obstacles and different human bodies.
- 根据权利要求9所述的方法,其特征在于,所述信号分析模块根据所述回波信号提取心电信号,并根据所述心电信号获得心率测量数据还包括: The method according to claim 9, wherein the signal analysis module extracts an electrocardiographic signal according to the echo signal, and obtains heart rate measurement data according to the ECG signal, further comprising:根据所述回波信号的相位特征确定产生所述回波信号的反射源,并根据所述反射源的回波信号确定心率数据。 A reflection source that generates the echo signal is determined according to a phase characteristic of the echo signal, and heart rate data is determined according to an echo signal of the reflection source.
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