CN106137163A - A kind of heart rate measurement apparatus and method - Google Patents
A kind of heart rate measurement apparatus and method Download PDFInfo
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- CN106137163A CN106137163A CN201510160295.3A CN201510160295A CN106137163A CN 106137163 A CN106137163 A CN 106137163A CN 201510160295 A CN201510160295 A CN 201510160295A CN 106137163 A CN106137163 A CN 106137163A
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Abstract
The present invention relates to a kind of generation based on arteriopalmus fluid pressure sensor vibrate to measure heart rate measurement apparatus and method, described device includes fluid holding module, pressure sensor block, electronic signal processing module, control module, signal of telecommunication delivery module, pressure sensor block gathers the pressure information of fluid in fluid holding module in chronological order with certain frequency under the control of control module, the frequency spectrum of the time series pressure information obtained by control module analyzing and processing, obtains the physiologic informations such as heart rate.The method that the present invention obtains heart rate information is simple, device is reliable, low in energy consumption, can quickly, online, immediately determine organism heart rate information, wearable device, on-line monitoring equipment can be widely used in, in order to user real-time online determines the heart rate information of tested organism.
Description
Technical field
The present invention relates to sensing technology and physiological parameter analysis determination techniques, the information being specifically related to beat based on pressure transducer and pulse is to extract the measuring technology of organism hrv parameter, beat on pressure sensor information impact to continuously acquire hrv parameter based on pulse especially by on-line determination, with determine tested organism at any time with the heart rate in any place, understand the health status of organism in real time.Pressure change produced by pressure sensor senses organism arterial pulsatile convection cell, by the spectrum distribution of data obtained by analysis pressure transducer, it may be determined that the heart rate of organism.The method can be widely used in the physiologic informations such as quick, accurate, online, immediately to determine analyzed organism heart rate: these data can understand the health status of organism in time for user, organism physiological situation at ordinary times can be understood for professionals such as doctors again and help is provided, to make more effectively Gernral Check-up the most targetedly.
Background technology
Along with growth in the living standard, health is increasingly paid close attention to by people.Although traditional health service with Hospital Physical Examination, diagnosis mode still has the status that can not shake, but people have been no longer satisfied with the service of these traditional approachs, wherein it is provided that real-time physiological parametric measurement system based on mobile communication equipment is the most prominent.Real-time physiological parametric measurement system combines multiple sensing technology, can provide Physiological And Biochemical Parameters for people at any time, facilitates user to understand physiological situation in time, in order to take corresponding health care measure；These data also can be for providing reference during doctor's diagnosis and treatment simultaneously, in order to understands patient's physiological situation at ordinary times.The physiological data of the wearable health medical treatment equipment Real-time Collection human body of real-time online, it it is the entrance of mobile health medical treatment service occupation, provide susceptible of proof science source for health medical treatment service based on big data analysis, the basis of health medical treatment service trade will be become, be following trend.Credit Suisse's net (ABI) report display wearable technology market scale will be risen to 300-500 hundred million dollars by current 30-50 hundred million dollars in 2 to three years in future.The data of ABI expect the wearable device whole world in 2018 and are up to 4.85 hundred million.China's prediction network data shows, within 2012, Chinese wearable portable mobile medical device market marketing scale reaches 4.2 hundred million yuan, expecting this market scale in 2015 will be more than 1,000,000,000 yuan, and within 2017, Chinese wearable portable mobile medical device market scale is close to 5,000,000,000 yuan.Heart rate measurement is the most basic physiological parameter that wearable device obtains, and obtaining this parameter mainly has two kinds of technology: photo-electric and electrocardio formula.The change that special wavelength light is absorbed by photo-electric by superficial skin arterial blood calculates heart rate；Electrocardio formula measures ecg curve by finger or skin, thus obtains heart rate.Both approaches is all the most classical mensuration heart rate technology, needs the close contact of equipment and human body and it needs to the factors such as eliminating outside is optical, electrical interference, could obtain reliable heart rate data.But when using wearable device online the real time measure heart rate, owing to user is often in kinestate, it is difficult to ensure that the condition of the acquisition reliability data required for both the above technology.And, the product power dissipation ratio of both technology is relatively big, and when Mobile solution, the operable time of battery is short.This degree of accuracy resulting in wearable device acquisition data and availability can not meet the requirement of demand each side, have impact on user's confidence to whole mobile health control, limit the performance in product and market.Therefore, reliable convenient technology and product by wearable device acquisition heart rate data with low power has huge market value basis and demand.
On the basis of the present invention obtains various technology and the implementation of the physiological parameters such as heart rate in research, in conjunction with sensor, electronic circuit and data analysis technique, invent one and can be used for real-time online heart rate low-power consumption determinator.
Summary of the invention
It is an object of the invention to provide the apparatus and method of the physiological parameters such as a kind of heart rate obtaining organism based on arteriopalmus, so that user or other user can understand the basic vital sign parameters such as heart rate in real time, not only to take the healthy measures such as health care timely and effectively, improve the health status of organism, and under special emergency, life-threatening signal can be found in time, play forewarning function.
For reaching above-mentioned purpose, the present invention has a following technical scheme:
A kind of heart rate of the present invention and blood pressure device, including fluid holding module, pressure sensor block, electronic signal processing module, control module, signal of telecommunication delivery module.
Fluid holding module has the fluid of certain pressure for holding, and is uniformly transferred by pressure to the tested position of organism；
Pressure sensor block is the pressure of fluid in the real time measure fluid holding module；
Electronic signal processing module, for transmitting control module, pressure sensor block and the signal of telecommunication of pulse sensing module and processing, makes these signals exchange between control module and sensing module；
Control module is for controlling mode and the frequency of the information that pressure sensor block and arteriopalmus module obtain, and the information obtained is called pre-set programs carries out computing, extracts the physiological parameter such as blood pressure and heart rate；
Information and other module follow-up that control module is obtained by signal of telecommunication delivery module carry out information exchange and transmit；
Described fluid holding is wrapped in tested organism test position, fluid communication between pressure sensor block and fluid holding module, it is fixed in fluid holding module, pressure sensing face is covered by fluid, pressure sensor block electrically connects with electronic signal processing module and control module, pressure sensor block gathers the pressure information of fluid in fluid holding module in chronological order with certain frequency under the control of control module, control module it is returned to after electronic signal processing module, the periodicity of the time series pressure information obtained by control module analyzing and processing, obtain heart rate physiologic information, send other module follow-up to through signal of telecommunication delivery module to use.
Wherein, in fluid holding module, holding has the fluid of fixation pressure, and this fluid is gas or liquid, and is sealed in device.
Wherein, the fluid in fluid holding module there being holding, both can be to seal holding in advance in device, it is also possible to poured by liquid pump before test uses.
Wherein, the fluid pressure in fluid holding module shrinks pressure with the difference of atmospheric pressure less than the natural arterial of organism.
Wherein, fluid holding module is that the flexible material using tool elastic makes, and the coefficient of elasticity of material can should be sensed by fluid ensureing that pulse is beaten in time close to or smaller than the coefficient of elasticity more than surveyed organism tremulous pulse organized.
Wherein, fluid holding module has air-tightness, to guarantee that in test process, fluid does not leaks.
Wherein, fluid holding module can be made into bar shaped, banding pattern, set type, presss from both sides shape but be not limited to above-mentioned shape, to adapt to the shape of organism different parts, improve comfort level and aesthetics: as tested the blood pressure of wrist, fluid holding device can be fabricated to wrist strap shape, can circularize or fingerstall type, refer to press from both sides shape during test finger.
Wherein, fluid holding module, when test, puts on the pressure natural arterial diastolic pressure less than organism at test position, to ensure the comfort level of human body, and avoids the impact on human vein circulation.
Wherein, pressure sensor block is the pressure of fluid in the real time measure fluid holding module, this pressure signal along with pulse beat generating period intensity on small vibrations, these information comprise heart rate signal and pulsation period.
Wherein, pressure sensor device is to determine frequency acquisition data, and this frequency should be higher than that heart rate more than 10 times, to ensure reliability and the precision of data.
Wherein, electronic signal processing module, for transmitting control module, the signal of telecommunication of pressure sensor block and processing, makes these signals can be mutually distinguishable and use between disparate modules；These process include but not limited to amplification, AD conversion, DA conversion etc..
Wherein, control module uses the device such as Micro-processor MCV or digital signal processor DSP, for controlling the mode of information and the frequency that pressure sensor block obtains, and the information obtained is called pre-set programs carries out computing, extract the physiological parameters such as heart rate.
Wherein, the information that control module is obtained by signal of telecommunication delivery module sends other module follow-up to and accepts the information from subsequent module；This load mode uses wired or wireless communication modes to realize the transmission of data, as wired such as I2C, serial port etc., wireless WIFI, bluetooth, or radio honeycomb communication etc..
Described fluid holding module, pressure sensor block, electronic signal processing module, control module and signal of telecommunication delivery module collectively form heart rate test device.Under the driving of power supply, this device can work alone.
The present invention obtains heart rate information method, and its step is as follows:
First, pressure sensor block obtains and is wrapped in organism test department bit stream body holding module fluid pressure signal, variation tendency that this pressure signal reflects the heart rate cycle and pulse arterial pulse under a certain pressure is beaten, its waveform includes heart rate and pulse cycle information；
Then by mathematical processing methods, the signal obtaining pressure transducer carries out baseline correction, filters, smooth etc. and to process, and the false information etc. that in the pressure signal obtained by elimination, noise and interference factor introduce obtains the true waveform in energy reaction pressure Reeb；
Carry out spectrum analysis finally by pressure signal, such as means such as differential, Fourier transformation, wavelet analysises, obtain periodicity in waveform, quantitatively to obtain the hrv parameter of organism.
In a word, use apparatus above and method, to the fluid pressure signal analyzing and processing obtained, obtain typical fluid holding module fluid pressure signal as shown in Figure 1, the hrv parameter of organism can be obtained by spectrum analysis the most online.
Owing to taking above technical scheme, the present invention has the following advantages:
1) present invention uses fixation pressure fluid holding device, simplifies operation and minute.
2) pressure putting on test position in the present invention shrinks the fluid holding device of pressure less than blood pressure, improves the comfort of user, expands use crowd, simplifies operation and minute.
3) due to the fact that employing fixation pressure mode, decrease gas replenishment process energy quick obtaining physiological parameter, on-line continuous can be used for and obtain the physiological parameters such as heart rate.
4) present invention uses the sensing device of miniaturization to obtain data, and whole device volume is little, from heavy and light, can be used for wearable setting.
5) present invention uses the sensing technology of low-power consumption, can reduce device power consumption, extends and works online the time.
6) apparatus and method of the present invention electrooptical device simple in construction, flexible configuration, wide accommodation, both can be used alone the real-time monitoring for physiological parameters such as hearts rate, it is also possible to and other sensor device is integrated, to obtain more multi-physiological-parameter in real time.
Accompanying drawing explanation
Fig. 1: fluid typical pressure signal in fluid holding module；
The block diagram of Fig. 2: the present invention；
Fig. 3: fluid holding modular structure schematic diagram；The left side is longitudinal sectional drawing, and the right is transverse cross-sectional view at arrow indication, and periphery black is the flexible material made, and internal tiltedly shadow part is the fluid filled.
The schematic diagram of Fig. 4: embodiments of the invention one；
The schematic diagram of Fig. 5: embodiments of the invention two.
Detailed description of the invention
The present invention just uses the apparatus and method of monitor heart rate on human body that this explanation embodiments of the present invention are described.
In human body artery, blood can produce fluctuation along with heartthrob.At body surface, this fluctuation also can be perceived, and simply has difference in the different perceived powers in position.The pulse-taking that the such as traditional Chinese medical science is familiar with is through perception radial artery, and to produce pulse amplitude at the diverse location such as cun, guan and chi, three places at the wrist where the pulse is usually taken of wrist different and realize.In fact, arteries and connected blood capillary all exist and the arteriogram produced because of heart contraction and diastole, this arteriogram is propagated at whole body with the speed close to 10m/s, all fluctuating with the identical rhythm and pace of moving things from the arterial capillary of big carotid artery to finger tip, ear end, here it is arteriogram, the pulse that namely people perceive at body surface is beaten.The rhythm and pace of moving things pulse frequency i.e. heart rate of arteriopalmus, therefore just can determine that heart rate by perception arteriopalmus.Fig. 1 is to obtain fluid pressure over time by this device.It may be seen that the pressure in fluid holding device occurs the most well-regulated variation over time, this variable cycle is identical with heart beat cycles, and its frequency is heart rate.
Fig. 2 is according to the heart rate measurement device designed by above-mentioned principle, including fluid holding module, pressure sensor block, electronic signal processing module, control module, signal of telecommunication delivery module.The power supply of apparatus above or provided by external power source, or provided by battery.
The flexible material that fluid holding module uses tool elastic makes, and the coefficient of elasticity of material can should be sensed by fluid ensureing that pulse is beaten in time close to or smaller than the coefficient of elasticity of human muscle's skin.Gas or liquid can be to seal holding in advance in device, it is also possible to poured by fluid pump before test uses.The relative pressure of gas or fluid is less than 80mmHg, and absolute pressure is less than 1.1 atmospheric pressure.Ensureing that this device can use relatively low pressure on the premise of the beat signals of effective perception pulse as much as possible, to ensure the comfort level of human body body-sensing, reduction life-time service is on sanguimotor impact.In whole data-gathering process, fluid holding module guarantees air-tightness, to prevent fluid in test process from leaking, affects accuracy and the reliability of data.The face shaping of fluid holding module can be made into the shapes such as bar shaped, banding pattern, set type, folder shape, to adapt to the shape at tested position, improve comfort level and aesthetics: such as the blood pressure wrist strap shape of wrist, the finger ring shape of finger, fingerstall type or refer to press from both sides shape, the ear clip type of ear or ear nail type.
Pressure sensor block is used for using pressure transducer, the pressure change of fluid in the real time measure fluid holding module.Fluid communication between pressure sensing one side and the fluid holding module of pressure transducer, to guarantee that the pressure of fluid keeps consistent in real time with the pressure in stress test face.
Electronic signal processing module is used for transmitting control module, the pressure sensor block signal of telecommunication and processing, and makes these signals can be mutually distinguishable and use between disparate modules.The function of electronic signal processing module include but not limited to anti-phase, compare, amplify, AD conversion, DA conversion, signal modulation etc..
Control module uses the devices such as Micro-processor MCV, CPU or digital signal processor DSP.In conjunction with software, for controlling mode and the frequency of the information that pressure sensor block obtains, and the information obtained is called pre-set programs carry out the computings such as baseline correction, filtering, deconvolution, differential, spectrum analysis, extract the physiological parameters such as heart rate.
The information that control module is obtained by signal of telecommunication delivery module sends other module follow-up to and accepts the information from other module follow-up；This load mode uses wired or wireless communication modes to realize the transmission of data, as wired such as I2C, serial port etc., wireless WIFI, bluetooth, or radio honeycomb communication etc..
Fluid holding module is wrapped in tested organism test position, fluid communication between pressure sensor block and fluid holding module, it is fixed in fluid holding module and determines position, pressure sensing face is covered by fluid, and signal of telecommunication delivery module, pressure sensor block electrically connect with electronic signal processing module and control module.Pressure sensor device under the control of control module with more than 100Hz frequency collection signal.
The method obtaining heart rate is: first obtain the pressure signal variable signal with arteriopalmus of pressure sensor device；Then by Mathematical treatment, these data are carried out respectively baseline correction, filter, the mode such as smooth to be to eliminate the noise in acquisition signal and interference；Finally by pressure signal being carried out differential, Fourier's change or wavelet analysis, with extracting cycle or frequency spectrum parameter, obtain organism heart rate data quantitatively.
Each module in the present invention carries out flexible configuration as required.Such as further temperature sensing, blood appearance pulse transducer and blood pressure pulse sensor can be simultaneously located in device, synchronize to use, obtain more physiological parameters about blood circulation further.For reducing the apparent size of device, signal processing module, control module, signal delivery module can be integrated on same circuit board, and further integrated data storage and display device, to constitute independent physiological parameter mensuration system.The power supply of this device both can be by the offer of other external power source, it would however also be possible to employ battery works alone.For improving the convenience used, protection fluid holding device and sensing device, in conjunction with suitable structure design, outside is aided with shell or the overcoat that rigid material is made, and can improve the comfort level of user, strengthens Consumer's Experience.In conjunction with modern communications technology, it is also possible to emergency is reminded, early warning or warning.
Embodiment one
The one of Fig. 4 present invention is based on wrist pulse wave measuring heart rate device and method.For minimizing human body to being attached at sensitive on skin and stimulating, the present embodiment uses the air tight bladders that enhancement mode natural rubber is made, and fluid uses and rushes the fluid apparatus for placing that air is made in advance, and preset air pressure is superatmospheric 50mmHg.Use the air pressure small variations that differential pressure type gas atmosphere sensor measures the pressure of air as the core devices of fluid pressure sensor block and arteriopalmus causes.The built-in preamplifier of pressure sensor block, amplifies signal to improve signal capacity of resisting disturbance in transmitting procedure.The signal that differential pressure type gas sensor obtains is converted analog signals into digital signal by a/d converter in signal processing module.These digital signals, under the control of control module MCU, are sampled with 200Hz sampling frequency synchronization.MCU, to obtaining numerical signal, completes baseline correction, numerical filtering, Fourier transformation under program control, obtains heart rate data.Signal delivery module uses low-power consumption Bluetooth chip, it is achieved test data and the transmission of raw measurement data.
In this embodiment, signal processing module, control module, signal delivery module are integrated on one piece of circuit board.Simultaneously for improving ease for use, this embodiment have employed stainless steel structure part as shell to protect fluid holding module；For storing data and showing heart rate value in time, also introduce memorizer and display.Apparatus above works under the driving of lithium battery.
Embodiment two
Fig. 5 is that the present invention is applied to ear-lobe, determines heart rate by measuring the arteriocapillary arteriopalmus in ear-lobe portion.For adapting to the shape of ear-lobe, the configuration design of this device become conchoidal, the inside to be lined with air bladder that natural rubber makes is as fluid holding device, and air pressure initial value is superatmospheric 30mmHg.The operating frequency of pressure sensor device is all set as 200Hz.For alleviator weight, use button cell as power supply.Other configuration and data processing method are all with embodiment one.
The method can be widely used in the heart rate determining people or other animal quickly and accurately: both can independently use as on-line continuous monitor heart rate value, can also be in conjunction with other facility, as a part for a multi-parameter physiology monitoring system, to determine the heart rate of organism in real time.
Can be seen that from the explanation of apparatus and method of the present invention and example, the invention provides and determine tested person or the heart rate device of animal body and method based on pressure sensing, waveform analysis, it is simple that this method and device have real-time, continuous, low-power consumption, equipment, flexible configuration, the feature such as applied range.But described above can not limit the enforceable scope of the present invention, the obvious or unconspicuous change that every professional person is made on the basis of the present invention, modify or improve, be regarded as the spirit without departing from the present invention.
Claims (8)
1. a heart rate measurement device, it is characterised in that: include fluid holding module, pressure
Sensing module, electronic signal processing module, control module, signal of telecommunication delivery module.
Fluid holding module has the fluid of certain pressure for holding, and is uniformly transferred by pressure
To the tested position of organism；
Pressure sensor block is the pressure of fluid in the real time measure fluid holding module；
Electronic signal processing module is used for transmitting control module, pressure sensor block and arteriopalmus and passes
Feel the signal of telecommunication of module and process, making these signals between control module and sensing module
Exchange；
Control module is for controlling the information of pressure sensor block and the acquisition of arteriopalmus module
Mode and frequency, and the information obtained is called pre-set programs carries out computing and spectrum analysis, carry
Take hrv parameter；
Information and other module follow-up that control module is obtained by signal of telecommunication delivery module carry out letter
Breath exchange transmits；
Described fluid holding module is wrapped in tested organism test position, pressure sensor block
And fluid communication between fluid holding module, it is fixed in fluid holding module and determines position, pressure
Power sensitive face is covered by fluid, signal of telecommunication delivery module, pressure sensor block and Electric signal processing
Module and control module electrical connection, work under the driving of power supply.
2. a kind of heart rate device as described in right 1, it is characterised in that: fluid holding module
Interior holding has the fluid of fixation pressure, and is sealed.
3. a kind of heart rate device as described in right 1, it is characterised in that: fluid holding module
The difference of the interior relatively large air pressure of fluid pressure should be less than the systolic arterial pressure of organism.
4. a kind of heart rate device as described in right 1, it is characterised in that: fluid holding module with
Have resilient flexible material to make, and there is air-tightness.
5. a kind of heart rate device as described in right 1, it is characterised in that: fluid holding module
It is fabricated to bar shaped, banding pattern, set type, presss from both sides shape but is not limited to above-mentioned shape, to adapt to organism not
Needed for site tests.
6. a kind of heart rate device as described in right 1, it is characterised in that: pressure sensor device
With determine frequency acquisition be placed in organism test position fluid holding device in fluid absolute
Or relative pressure changes over.
7. a kind of heart rate device as described in right 1, it is characterised in that: by acquisition
Fluid pressure signal analyzes and processes, and obtains the hrv parameter of organism.
8. the method that a device obtains hrv parameter, it is characterised in that: first pass through pressure sensing
Device obtains and is wrapped in organism test department bit stream body holding module fluid pressure signal；Then
By baseline correction, filter, the mode such as smooth eliminate obtain the noise of pressure signal and interference because of
Element；Finally by the periodicity analysis to pressure signal, quantitatively obtain organism hrv parameter.
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