CN106175832A - A kind of method detecting blood pressure and mobile terminal - Google Patents

A kind of method detecting blood pressure and mobile terminal Download PDF

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Publication number
CN106175832A
CN106175832A CN201610480025.5A CN201610480025A CN106175832A CN 106175832 A CN106175832 A CN 106175832A CN 201610480025 A CN201610480025 A CN 201610480025A CN 106175832 A CN106175832 A CN 106175832A
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China
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described
frequency
mobile terminal
ultrasonic signal
physical sign
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CN201610480025.5A
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Chinese (zh)
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CN106175832B (en
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施开成
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联想(北京)有限公司
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/04Measuring blood pressure

Abstract

The embodiment of the invention discloses a kind of method detecting blood pressure and mobile terminal.Described method includes: mobile terminal launches the first ultrasonic signal of first frequency;Receive the second ultrasonic signal, identify the second frequency of described second ultrasonic signal;The first physical sign parameters of described mobile terminal user is determined based on described first frequency and described second frequency;The blood flowing speed of mobile terminal user described in described first parameter characterization;Preset corresponding relation based on first and obtain the pressure value that described first physical sign parameters is corresponding.

Description

A kind of method detecting blood pressure and mobile terminal

Technical field

The present invention relates to the information processing technology, be specifically related to a kind of method detecting blood pressure and mobile terminal.

Background technology

In prior art, blood pressure is typically by diastolic pressure and shrinks pressure expression;Blood pressure detector generally has air pump, wrist strap With the parts such as pressure inductor composition.This blood pressure detector volume is relatively big, is not suitable for portable carrying, and also cannot apply and move On dynamic equipment.

Summary of the invention

For solving the technical problem of existing existence, embodiments provide a kind of method detecting blood pressure and move eventually End, it is possible to realize the detection of blood pressure on the mobile apparatus.

For reaching above-mentioned purpose, the technical scheme of the embodiment of the present invention is achieved in that

Embodiments providing a kind of method detecting blood pressure, described method includes:

Mobile terminal launches the first ultrasonic signal of first frequency;

Receive the second ultrasonic signal, identify the second frequency of described second ultrasonic signal;

The first physical sign parameters of described mobile terminal user is determined based on described first frequency and described second frequency;Institute State the blood flowing speed of mobile terminal user described in the first parameter characterization;

Preset corresponding relation based on first and obtain the pressure value that described first physical sign parameters is corresponding.

In such scheme, first ultrasonic signal launching first frequency of described mobile terminal, including:

Described mobile terminal persistently launches the first ultrasonic signal of first frequency in the range of the very first time;

Described reception the second ultrasonic signal, identifies the second frequency of described second ultrasonic signal, including: receive multiple Second ultrasonic signal, identifies multiple second frequencies of the plurality of second ultrasonic signal;

Accordingly, described the first of described mobile terminal user is determined based on described first frequency and described second frequency Physical sign parameters, including:

Multiple first bodies of described mobile terminal user are determined based on described first frequency and the plurality of second frequency Levy parameter;

The meansigma methods obtaining described first physical sign parameters is calculated based on the plurality of first physical sign parameters.

In such scheme, described preset corresponding relation based on first and obtain pressure value corresponding to described first physical sign parameters, Including:

Preset corresponding relation based on first and obtain the pressure value corresponding to meansigma methods of described first physical sign parameters.

In such scheme, described determine described mobile terminal user based on described first frequency and described second frequency First physical sign parameters, including:

Based on described first frequency, described second frequency, characterize ultrasonic signal average propagation speed in human body First constant, characterize described first ultrasonic signal launch direction normal with the second of the angle of the direction of flow of blood of user Number determines the first physical sign parameters of described mobile terminal user;

Wherein, described first physical sign parameters v meets:

v = c × f d 2 × f 0 × c o s θ ;

Wherein, c represents ultrasonic signal the mean propagation velocity in human body;fdRepresent described second frequency;f0Represent institute State first frequency;θ represents the angle launching direction and the direction of flow of blood of user of described first ultrasonic signal.

In such scheme, described preset corresponding relation based on first and obtain pressure value corresponding to described first physical sign parameters, Including:

It is pre-configured with the first proportionate relationship;Described first proportionate relationship characterizes described first physical sign parameters and pressure value meets Proportional relationship;

The pressure value that described first physical sign parameters is corresponding is obtained based on described first proportionate relationship.

In such scheme, described first proportionate relationship meets:

P=K (V-noise);

Wherein, P represents pressure value;V represents the first physical sign parameters;K represents proportionality coefficient;Noise represents preset noise Constant.

The embodiment of the present invention additionally provides a kind of mobile terminal, and described mobile terminal includes: supersonic sensing unit, first Computing unit and the second computing unit;Wherein,

Described supersonic sensing unit, for launching the first ultrasonic signal of first frequency;And it is ultrasonic to receive second Ripple signal, identifies the second frequency of described second ultrasonic signal;

Based on described first frequency and described second frequency, described first computing unit, for determining that described mobile terminal makes First physical sign parameters of user;The blood flowing speed of mobile terminal user described in described first parameter characterization;

Described second computing unit, obtains, for presetting corresponding relation based on first, the blood that described first physical sign parameters is corresponding Pressure value.

In such scheme, described supersonic sensing unit, for persistently launching first frequency in the range of the very first time First ultrasonic signal;And receive multiple second ultrasonic signal, identify multiple the of the plurality of second ultrasonic signal Two frequencies;

Described first computing unit, described mobile whole for determining based on described first frequency and the plurality of second frequency Multiple first physical sign parameters of end user;Calculate based on the plurality of first physical sign parameters and obtain described first physical sign parameters Meansigma methods.

In such scheme, described second computing unit, obtain described first sign for presetting corresponding relation based on first The pressure value that the meansigma methods of parameter is corresponding.

In such scheme, described first computing unit, for surpassing based on described first frequency, described second frequency, sign First constant of acoustic signals average propagation speed in human body, characterize the transmitting direction of described first ultrasonic signal and make Second constant of the angle of the direction of flow of blood of user determines the first physical sign parameters of described mobile terminal user;

Wherein, described first physical sign parameters v meets:

v = c × f d f 0 × cos θ ;

Wherein, c represents ultrasonic signal the mean propagation velocity in human body;fdRepresent described second frequency;f0Represent institute State first frequency;θ represents the angle launching direction and the direction of flow of blood of user of described first ultrasonic signal.

In such scheme, described second computing unit, it is used for being pre-configured with the first proportionate relationship;Described first proportionate relationship Characterize described first physical sign parameters and pressure value meets proportional relationship;Described first body is obtained based on described first proportionate relationship Levy the pressure value that parameter is corresponding.

In such scheme, described first proportionate relationship meets:

P=K (V-noise);

Wherein, P represents pressure value;V represents the first physical sign parameters;K represents proportionality coefficient;Noise represents preset noise Constant.

The method of the detection blood pressure that the embodiment of the present invention provides and mobile terminal, launch first frequency by mobile terminal First ultrasonic signal;Receive the second ultrasonic signal, identify the second frequency of described second ultrasonic signal;Based on described One frequency and described second frequency determine the first physical sign parameters of described mobile terminal user;Described in described first parameter characterization The blood flowing speed of mobile terminal user;Preset corresponding relation based on first and obtain the blood that described first physical sign parameters is corresponding Pressure value.So, use the technical scheme of the embodiment of the present invention, launch super by the supersonic sensing unit arranged on mobile terminal Acoustic signals, the tranmitting frequency of the ultrasonic signal caused based on doppler shift effect and receive the difference of frequency, determine blood Flowing velocity;It is based further on blood flowing speed and the incidence relation of pressure value thus realizes the detection of pressure value.This side Formula is without carrying the blood pressure detector of specialty, it is achieved that the detection of the blood pressure on mobile terminal, compact, it is simple to carry, Improve the experience of user.

Accompanying drawing explanation

Fig. 1 is the schematic flow sheet of the method for the detection blood pressure of the embodiment of the present invention one;

Fig. 2 is the schematic flow sheet of the method for the detection blood pressure of the embodiment of the present invention two;

Fig. 3 is the composition structural representation of the mobile terminal of the embodiment of the present invention;

Fig. 4 is the application schematic diagram of the supersonic sensing unit in the mobile terminal of the embodiment of the present invention.

Detailed description of the invention

In various embodiments of the present invention, on the one hand, mobile terminal to the ultrasonic signal of human-body emitting first frequency, and Receive the ultrasonic signal of the second frequency of reflection/scattering.The blood of flowing is looked into owing to propagating distance, can cause sound The change of the phase and frequency of ripple signal;Based on this, by the tranmitting frequency of ultrasonic signal and the difference of reception frequency, determine The flow velocity of blood.On the other hand, owing to blood is flowing, the composition of about 45% is hemocyte, and this percentage ratio is also blood The number density of cell.Wherein, erythrocyte accounts for the overwhelming majority, accounts for 99%.For blood, there are two important properties, I.e. density and viscosity.The density of blood is about 1.05g/ml, the viscosity ratio water big 50% of blood, the biggest resistance to blood flow of viscosity The biggest.The flowing of blood is caused by blood pressure difference, and heart is the working organ producing blood pressure difference, and blood pressure difference is the biggest, blood The speed of flowing is the fastest.Based on this, the flow velocity of blood and blood pressure are certain proportional relation;After then determining the flow velocity of blood, base In described proportional relation so that it is determined that blood pressure, it is achieved the detection to blood pressure.

Below in conjunction with the accompanying drawings and specific embodiment the present invention is further detailed explanation.

Embodiment one

Embodiments provide a kind of method detecting blood pressure.Fig. 1 is the detection blood pressure of the embodiment of the present invention one The schematic flow sheet of method;As it is shown in figure 1, described method includes:

Step 101: mobile terminal launches the first ultrasonic signal of first frequency.

Step 102: receive the second ultrasonic signal, identifies the second frequency of described second ultrasonic signal.

Step 103: determine the first body of described mobile terminal user based on described first frequency and described second frequency Levy parameter;The blood flowing speed of mobile terminal user described in described first parameter characterization.

Step 104: preset corresponding relation based on first and obtain the pressure value that described first physical sign parameters is corresponding.

The method of the detection blood pressure of the embodiment of the present invention is applied in mobile terminal, and described mobile terminal is specifically as follows intelligence The portable terminal device types such as energy mobile phone, panel computer, intelligent watch, Intelligent bracelet.

In the present embodiment, described mobile terminal to the first ultrasonic signal of human-body emitting first frequency, and can receive Second ultrasonic signal;Described mobile terminal can launch the first ultrasonic signal by ultrasonic sensor and reception the second surpasses Acoustic signals.Concrete, the transmitting terminal of the ultrasonic sensor that described mobile terminal is arranged and receiving terminal can be close to the skin of human body Skin, will launch the first ultrasonic signal of described first frequency in skin.When described mobile terminal is Intelligent bracelet or intelligence hands During table, inside the wrist strap that described Intelligent bracelet or intelligent watch contact with wrist or inside function body, ultrasonic sensor is set Transmitting terminal and receiving terminal;In such a scenario, user can be by detection wrist when the described intelligent watch of wearing or Intelligent bracelet Velocity of blood flow in the blood vessel at place.

When described mobile terminal is smart mobile phone or panel computer, the transmitting terminal of ultrasonic sensor and receiving terminal can set Put the surface of shell at described smart mobile phone or panel computer;Finger can be close to the transmitting terminal of described ultrasonic sensor by user With receiving terminal region with the velocity of blood flow in the blood vessel at detection finger.As one of which embodiment, described ultrasonic The transmitting terminal of wave sensor and receiving terminal may be provided at the edge surface of shell of described smart mobile phone or panel computer;User can be When holding this smart mobile phone or panel computer, it is close to transmitting terminal and the receiving terminal institute of described ultrasonic sensor with finger or palm In region, to detect the velocity of blood flow in the blood vessel at finger or palm.

In the present embodiment, described mobile terminal is to the first ultrasonic signal of human-body emitting first frequency.Under normal circumstances, The frequency range of ultrasound wave is between 20Hz~20kHz, and the most described first frequency meets 20Hz~20kHz;Such as, described first Frequency can be 5MHz.Described first ultrasonic signal molecule in being transmitted to blood vessel (mainly in blood red carefully Born of the same parents) time, it may occur that scattering.During scattering, erythrocyte will become new sound source, and launch ultrasound wave to surrounding.Scatter at erythrocyte Under the effect of echo, mobile terminal receives the second ultrasonic signal, creates doppler shift effect in this process.

In the present embodiment, concrete, described determine described mobile terminal based on described first frequency and described second frequency First physical sign parameters of user, including: based on described first frequency, described second frequency, characterize ultrasonic signal at human body In average propagation speed the first constant, characterize the blood flowing launching direction and user of described first ultrasonic signal Second constant of the angle in direction determines the first physical sign parameters of described mobile terminal user;Wherein, described first sign ginseng Number v meet formula (1):

v = c × f d 2 × f 0 × c o s θ - - - ( 1 )

Wherein, c represents ultrasonic signal the mean propagation velocity in human body;fdRepresent described second frequency;f0Represent institute State first frequency;θ represents the angle launching direction and the direction of flow of blood of user of described first ultrasonic signal.

Concrete, it is assumed that ultrasound source is static and tranmitting frequency is f0The first ultrasonic signal, described first ultrasound wave The speed of signal is c.The speed of moving object (erythrocyte in such as blood) be v (wherein, the speed away from wave source is negative, Otherwise just it is).The frequency of the ultrasound wave observed from the angle of moving object is (c+v) f0/c.Moving object reflection described the One ultrasound wave, now moving object can regard wave source as.The frequency received at former first ultrasonic signal is (c+v) f0/(c- V), accordingly, because doppler shift effect makes reception frequency f of receiving terminaldMeet:

f d = 2 v c - v f 0 - - - ( 2 )

In formula (2), owing to c is much larger than v, so formula (2) can be approximated to be:

f d = 2 v c f 0 - - - ( 3 )

If the direction of motion launching direction and moving object of the first ultrasonic signal has the situation of angle, then produce The speed of Doppler frequency shift be the movement velocity component in ultrasonic emitting direction.Assume that described angle is θ, then receive termination Receive frequency fdMeet:

f d = 2 v c o s θ c f 0 - - - ( 4 )

Based on expression formula (4), obtain expression formula (1) by Parameters Transformation.

Under normal circumstances, ultrasound wave the mean propagation velocity in human body is 1540m/s, then c can be as a definite value. In order to meet certain investigation depth and range resolution ratio, the first frequency of the first ultrasonic signal of transmitting is generally at 3- 10MHz.And blood flow rate maximum is not more than few meters per second, therefore the unit of the Doppler effect of blood flow is kHz rank, Then expression formula (1) can be expressed as:

v ( c m / s ) = 77 ( c m / m s ) × f d ( k H z ) f 0 ( M H z ) × c o s θ - - - ( 5 )

In the present embodiment, in order to obtain the frequency shift signal of maximum, the generation direction of described first ultrasonic signal and blood flow Direction can be in a fixing angle, and such as θ is equal to about 50 °, because at this moment cos θ is the least, even if at this moment sending certain trembling Move and also cos θ can be regarded as a constant.Based on this, in expression formula (1), c and cos θ all can be as constant, then based on launching frequency Rate (i.e. first frequency) f0With reception frequency (i.e. second frequency) fdAcquisition blood flowing speed v can be calculated.

In the present embodiment, owing to velocity of blood flow and blood pressure are certain proportional relation, then described based on the first default correspondence Relation obtains the pressure value that described first physical sign parameters is corresponding, including: it is pre-configured with the first proportionate relationship;Described first ratio is closed System characterizes described first physical sign parameters and pressure value meets proportional relationship;Described first is obtained based on described first proportionate relationship The pressure value that physical sign parameters is corresponding.

In actual applications, described first proportionate relationship can meet:

P=K (V-noise) (6)

Wherein, P represents pressure value;V represents the first physical sign parameters;K represents proportionality coefficient;Noise represents preset noise Constant.

Use the technical scheme of the embodiment of the present invention, launch ultrasonic by the supersonic sensing unit arranged on mobile terminal Ripple signal, the tranmitting frequency of the ultrasonic signal caused based on doppler shift effect and receive the difference of frequency, determine blood stream Dynamic speed;It is based further on blood flowing speed and the incidence relation of pressure value thus realizes the detection of pressure value.This mode Without carrying the blood pressure detector of specialty, it is achieved that the detection of the blood pressure on mobile terminal, compact, it is simple to carry, carry Rise the experience of user.

Embodiment two

The embodiment of the present invention additionally provides a kind of method detecting blood pressure.Fig. 2 is the detection blood pressure of the embodiment of the present invention two The schematic flow sheet of method;As in figure 2 it is shown, described method includes:

Step 201: mobile terminal persistently launches the first ultrasonic signal of first frequency in the range of the very first time.

Step 202: receive multiple second ultrasonic signal, identifies multiple second frequencies of the plurality of second ultrasonic signal Rate.

Step 203: determine that described mobile terminal user is many based on described first frequency and the plurality of second frequency Individual first physical sign parameters.

Step 204: calculate the meansigma methods obtaining described first physical sign parameters based on the plurality of first physical sign parameters.

Step 205: preset corresponding relation based on first and obtain the pressure value corresponding to meansigma methods of described first physical sign parameters.

The method of the detection blood pressure of the embodiment of the present invention is applied in mobile terminal, and described mobile terminal is specifically as follows intelligence The portable terminal device types such as energy mobile phone, panel computer, intelligent watch, Intelligent bracelet.

In the present embodiment, described mobile terminal to the first ultrasonic signal of human-body emitting first frequency, and can receive Second ultrasonic signal;Described mobile terminal can launch the first ultrasonic signal by ultrasonic sensor and reception the second surpasses Acoustic signals.Concrete, the transmitting terminal of the ultrasonic sensor that described mobile terminal is arranged and receiving terminal can be close to the skin of human body Skin, will launch the first ultrasonic signal of described first frequency in skin.When described mobile terminal is Intelligent bracelet or intelligence hands During table, inside the wrist strap that described Intelligent bracelet or intelligent watch contact with wrist or inside function body, ultrasonic sensor is set Transmitting terminal and receiving terminal;In such a scenario, user can be by detection wrist when the described intelligent watch of wearing or Intelligent bracelet Velocity of blood flow in the blood vessel at place.

When described mobile terminal is smart mobile phone or panel computer, the transmitting terminal of ultrasonic sensor and receiving terminal can set Put the surface of shell at described smart mobile phone or panel computer;Finger can be close to the transmitting terminal of described ultrasonic sensor by user With receiving terminal region with the velocity of blood flow in the blood vessel at detection finger.As one of which embodiment, described ultrasonic The transmitting terminal of wave sensor and receiving terminal may be provided at the edge surface of shell of described smart mobile phone or panel computer;User can be When holding this smart mobile phone or panel computer, it is close to transmitting terminal and the receiving terminal institute of described ultrasonic sensor with finger or palm In region, to detect the velocity of blood flow in the blood vessel at finger or palm.

In the present embodiment, described mobile terminal is to the first ultrasonic signal of human-body emitting first frequency.Under normal circumstances, The frequency range of ultrasound wave is between 20Hz~20kHz, and the most described first frequency meets 20Hz~20kHz;Such as, described first Frequency can be 5MHz.Described first ultrasonic signal molecule in being transmitted to blood vessel (mainly in blood red carefully Born of the same parents) time, it may occur that scattering.During scattering, erythrocyte will become new sound source, and launch ultrasound wave to surrounding.Scatter at erythrocyte Under the effect of echo, mobile terminal receives the second ultrasonic signal, creates doppler shift effect in this process.

In the present embodiment, described mobile terminal is to the first ultrasonic signal of human-body emitting first frequency.Under normal circumstances, The frequency range of ultrasound wave is between 20Hz~20kHz, and the most described first frequency meets 20Hz~20kHz;Such as, described first Frequency can be 5MHz.Described first ultrasonic signal molecule in being transmitted to blood vessel (mainly in blood red carefully Born of the same parents) time, it may occur that scattering.During scattering, erythrocyte will become new sound source, and launch ultrasound wave to surrounding.Scatter at erythrocyte Under the effect of echo, mobile terminal receives the second ultrasonic signal, creates doppler shift effect in this process.

In the present embodiment, concrete, described determine described mobile terminal based on described first frequency and described second frequency First physical sign parameters of user, including: based on described first frequency, described second frequency, characterize ultrasonic signal at human body In average propagation speed the first constant, characterize the blood flowing launching direction and user of described first ultrasonic signal Second constant of the angle in direction determines the first physical sign parameters of described mobile terminal user;Wherein, described first sign ginseng Number v meet formula (1):

v = c × f d 2 × f 0 × c o s θ - - - ( 1 )

Wherein, c represents ultrasonic signal the mean propagation velocity in human body;fdRepresent described second frequency;f0Represent institute State first frequency;θ represents the angle launching direction and the direction of flow of blood of user of described first ultrasonic signal.

Concrete, it is assumed that ultrasound source is static and tranmitting frequency is f0The first ultrasonic signal, described first ultrasound wave The speed of signal is c.The speed of moving object (erythrocyte in such as blood) be v (wherein, the speed away from wave source is negative, Otherwise just it is).The frequency of the ultrasound wave observed from the angle of moving object is (c+v) f0/c.Moving object reflection described the One ultrasound wave, now moving object can regard wave source as.The frequency received at former first ultrasonic signal is (c+v) f0/(c- V), accordingly, because doppler shift effect makes reception frequency f of receiving terminaldMeet:

f d = 2 v c - v f 0 - - - ( 2 )

In formula (2), owing to c is much larger than v, so formula (2) can be approximated to be:

f d = 2 v c f 0 - - - ( 3 )

If the direction of motion launching direction and moving object of the first ultrasonic signal has the situation of angle, then produce The speed of Doppler frequency shift be the movement velocity component in ultrasonic emitting direction.Assume that described angle is θ, then receive termination Receive frequency fdMeet:

f d = 2 v c o s θ c f 0 - - - ( 4 )

Based on expression formula (4), obtain expression formula (1) by Parameters Transformation.

Under normal circumstances, ultrasound wave the mean propagation velocity in human body is 1540m/s, then c can be as a definite value. In order to meet certain investigation depth and range resolution ratio, the first frequency of the first ultrasonic signal of transmitting is generally at 3- 10MHz.And blood flow rate maximum is not more than few meters per second, therefore the unit of the Doppler effect of blood flow is kHz rank, Then expression formula (1) can be expressed as:

v ( c m / s ) = 77 ( c m / m s ) × f d ( k H z ) f 0 ( M H z ) × c o s θ - - - ( 5 )

In the present embodiment, in order to obtain the frequency shift signal of maximum, the generation direction of described first ultrasonic signal and blood flow Direction can be in a fixing angle, and such as θ is equal to about 50 °, because at this moment cos θ is the least, even if at this moment sending certain trembling Move and also cos θ can be regarded as a constant.Based on this, in expression formula (1), c and cos θ all can be as constant, then based on launching frequency Rate (i.e. first frequency) f0With reception frequency (i.e. second frequency) fdAcquisition blood flowing speed v can be calculated.

In the present embodiment, described mobile terminal transmitting the first ultrasound wave that (such as 30 seconds) are lasting in the range of the very first time Signal, accordingly, described mobile terminal can receive multiple second ultrasonic signal;By first frequency and second frequency according to The calculation of expression formula (1) determines the blood flowing speed of user;Accordingly, by first frequency and multiple second frequencies Can determine that multiple velocity of blood flow of user, and then by averaged (such as arithmetic average, weighted mean etc.) Mode obtains the meansigma methods of the blood flowing speed of described user, carries out follow-up based on described blood flowing speed meansigma methods The calculating of pressure value.So so that the pressure value that detection obtains is the most accurate.

In the present embodiment, owing to velocity of blood flow and blood pressure are certain proportional relation, then described based on the first default correspondence Relation obtains the pressure value corresponding to meansigma methods of described first physical sign parameters, including: it is pre-configured with the first proportionate relationship;Described Meansigma methods and the pressure value of one proportionate relationship described first physical sign parameters of sign meet proportional relationship;Based on described first ratio Relation obtains the pressure value corresponding to meansigma methods of described first physical sign parameters.

In actual applications, described first proportionate relationship can meet:

P=K (V '-noise) (7)

Wherein, P represents pressure value;V ' represents the first physical sign parameters;K represents proportionality coefficient;Noise represents preset noise Constant.

Use the technical scheme of the embodiment of the present invention, launch ultrasonic by the supersonic sensing unit arranged on mobile terminal Ripple signal, the tranmitting frequency of the ultrasonic signal caused based on doppler shift effect and receive the difference of frequency, determine blood stream Dynamic speed;It is based further on blood flowing speed and the incidence relation of pressure value thus realizes the detection of pressure value.This mode Without carrying the blood pressure detector of specialty, it is achieved that the detection of the blood pressure on mobile terminal, compact, it is simple to carry, carry Rise the experience of user.

Embodiment three

The embodiment of the present invention additionally provides a kind of mobile terminal, and Fig. 3 is the composition knot of the mobile terminal of the embodiment of the present invention Structure schematic diagram;As it is shown on figure 3, described mobile terminal includes: supersonic sensing unit the 31, first computing unit 32 and second calculates Unit 33;Wherein,

Described supersonic sensing unit 31, for launching the first ultrasonic signal of first frequency;And reception the second surpasses Acoustic signals, identifies the second frequency of described second ultrasonic signal;

Described first computing unit 32, for determining described mobile terminal based on described first frequency and described second frequency First physical sign parameters of user;The blood flowing speed of mobile terminal user described in described first parameter characterization;

Described second computing unit 33 is corresponding for presetting corresponding relation described first physical sign parameters of acquisition based on first Pressure value.

The method of the detection blood pressure of the embodiment of the present invention is applied in mobile terminal, and described mobile terminal is specifically as follows intelligence The portable terminal device types such as energy mobile phone, panel computer, intelligent watch, Intelligent bracelet.

In the present embodiment, described supersonic sensing unit 31 can to the first ultrasonic signal of human-body emitting first frequency, And receive the second ultrasonic signal.Concrete, transmitting terminal and the receiving terminal of described supersonic sensing unit 31 can be close to human body Skin, the first ultrasonic signal of described first frequency will be launched in skin.When described mobile terminal is Intelligent bracelet or intelligence During energy wrist-watch, ultrasound wave is set inside the wrist strap that described Intelligent bracelet or intelligent watch contact with wrist or inside function body and passes The transmitting terminal of sense unit 31 and receiving terminal;In such a scenario, user can be by dressing described intelligent watch or during Intelligent bracelet The velocity of blood flow in blood vessel at detection wrist.

When described mobile terminal is smart mobile phone or panel computer, the transmitting terminal of supersonic sensing unit 31 and receiving terminal May be provided at the surface of shell of described smart mobile phone or panel computer;Finger can be close to described supersonic sensing unit 31 by user Transmitting terminal and receiving terminal region with detection finger at blood vessel in velocity of blood flow.As one of which embodiment, The transmitting terminal of described supersonic sensing unit 31 and receiving terminal may be provided at the edge housing of described smart mobile phone or panel computer Surface;User can be close to described supersonic sensing unit 31 when holding this smart mobile phone or panel computer with finger or palm Transmitting terminal and receiving terminal region, to detect the velocity of blood flow in the blood vessel at finger or palm.

In the present embodiment, described supersonic sensing unit 31 is to the first ultrasonic signal of human-body emitting first frequency.Logical In the case of Chang, the frequency range of ultrasound wave is between 20Hz~20kHz, and the most described first frequency meets 20Hz~20kHz;Example As, described first frequency can be 5MHz.Described first ultrasonic signal molecule (mainly blood in being transmitted to blood vessel Erythrocyte in liquid) time, it may occur that scattering.During scattering, erythrocyte will become new sound source, and launch ultrasound wave to surrounding.? Under the effect of erythrocyte scatter echo, mobile terminal receives the second ultrasonic signal, creates Doppler in this process Frequency shift effect.

In the present embodiment, concrete, described first computing unit 32, for based on described first frequency, described second frequency Rate, characterize ultrasonic signal average propagation speed in human body the first constant, characterize described first ultrasonic signal send out Second constant of the angle penetrating the direction of flow of blood of direction and user determines the first sign of described mobile terminal user Parameter;Wherein, described first physical sign parameters v meets formula (1):

v = c × f d 2 × f 0 × c o s θ - - - ( 1 )

Wherein, c represents ultrasonic signal the mean propagation velocity in human body;fdRepresent described second frequency;f0Represent institute State first frequency;θ represents the angle launching direction and the direction of flow of blood of user of described first ultrasonic signal.

Concrete, the derivation of formula (1) can refer to, described in embodiment one, repeat no more here.

In the present embodiment, owing to velocity of blood flow and blood pressure are certain proportional relation, the most described second computing unit 33, use In being pre-configured with the first proportionate relationship;Described first proportionate relationship characterizes described first physical sign parameters and pressure value meets direct proportion Relation;The pressure value that described first physical sign parameters is corresponding is obtained based on described first proportionate relationship.

Wherein, described first proportionate relationship meets: P=K (V-noise);

Wherein, P represents pressure value;V represents the first physical sign parameters;K represents proportionality coefficient;Noise represents preset noise Constant.

It will be appreciated by those skilled in the art that the function of each processing module in the mobile terminal of the embodiment of the present invention, can join Understand, each processing module in the mobile terminal of the embodiment of the present invention according to the associated description of method of aforementioned detection blood pressure, can lead to Cross and realize the analog circuit of the function described in the embodiment of the present invention and realize, it is also possible to by performing described in the embodiment of the present invention The operation on intelligent terminal of the software of function and realize.

Embodiment four

The embodiment of the present invention additionally provides a kind of mobile terminal, and the structure composition of described mobile terminal can refer to shown in Fig. 3, Described mobile terminal includes: supersonic sensing unit the 31, first computing unit 32 and the second computing unit 33;Wherein,

Described supersonic sensing unit 31, for persistently launching the first ultrasound wave of first frequency in the range of the very first time Signal;And receive multiple second ultrasonic signal, identify multiple second frequencies of the plurality of second ultrasonic signal;

Described first computing unit 32, for determining described movement based on described first frequency and the plurality of second frequency Multiple first physical sign parameters of terminal user;Calculate based on the plurality of first physical sign parameters and obtain described first physical sign parameters Meansigma methods.

Described second computing unit 33, obtains the average of described first physical sign parameters for presetting corresponding relation based on first The pressure value that value is corresponding.

Being different from embodiment three, in the present embodiment, described supersonic sensing unit 31 is in the range of the very first time (such as 30 Second) lasting transmitting the first ultrasonic signal, accordingly, described supersonic sensing unit 31 can receive multiple second ultrasound wave Signal;Determined the blood flowing speed of user according to the calculation of expression formula (1) by first frequency and second frequency;Phase Answering, described first computing unit 32 can determine that multiple velocity of blood flow of user by first frequency and multiple second frequencies, And then by the way of averaged (such as arithmetic average, weighted mean etc.), obtain the blood flowing of described user The meansigma methods of speed, described second computing unit 33 carries out the meter of follow-up pressure value based on described blood flowing speed meansigma methods Calculate.So so that the pressure value that detection obtains is the most accurate.

In actual applications, described supersonic sensing unit 31 can pass through two blocks of piezoquartzes being placed in parallel, and makees respectively For transmitting terminal and receiving terminal.Transmitting terminal, under the effect of high-frequency voltage signal, produces ultrasound wave by inverse piezoelectric effect.Receiving terminal The second ultrasonic signal received is converted into high-frequency voltage signal due to direct piezoelectric effect.Fig. 4 is the shifting of the embodiment of the present invention The application schematic diagram of the supersonic sensing unit 31 in dynamic terminal;As shown in Figure 4, the first ultrasound wave that transmitting terminal sends penetrates people Soma and blood vessel, run into the erythrocyte in blood vessel and reflection or scattering occur;Such as inscribe when T1, run into erythrocyte 1 Raw scattering, the angle of scattering is θ (θ represents the transmitting direction of ultrasound wave and the angle of direction of flow of blood).Along with erythrocytic Flowing, in the T2 moment, the position of erythrocyte 1 changes, and scatters the second ultrasound wave to the receiving terminal of supersonic sensing unit 31. Described ultrasound wave second frequency based on the first frequency of the first ultrasound wave launched and the second ultrasound wave received is to blood In pipe, the flowing velocity of blood calculates.

It will be appreciated by those skilled in the art that the function of each processing module in the mobile terminal of the embodiment of the present invention, can join Understand, each processing module in the mobile terminal of the embodiment of the present invention according to the associated description of method of aforementioned detection blood pressure, can lead to Cross and realize the analog circuit of the function described in the embodiment of the present invention and realize, it is also possible to by performing described in the embodiment of the present invention The operation on intelligent terminal of the software of function and realize.

In the embodiment of the present invention three and embodiment four, the first computing unit 32 and second in described mobile terminal calculates list Unit 33, the most all can be by central processing unit (CPU, the Central Processing in described mobile terminal Unit), digital signal processor (DSP, Digital Signal Processor), micro-control unit (MCU, Microcontroller Unit) or programmable gate array (FPGA, Field-Programmable Gate Array) realization; Supersonic sensing unit 31 in described mobile terminal, the most all can be by the supersonic sensing in described mobile terminal Device realizes.

In several embodiments provided herein, it should be understood that disclosed equipment and method, can be passed through it Its mode realizes.Apparatus embodiments described above is only schematically, such as, the division of described unit, it is only A kind of logic function divides, and actual can have other dividing mode, such as when realizing: multiple unit or assembly can be in conjunction with, or It is desirably integrated into another system, or some features can be ignored, or do not perform.It addition, shown or discussed each composition portion Dividing coupling each other or direct-coupling or communication connection can be the INDIRECT COUPLING by some interfaces, equipment or unit Or communication connection, can be electrical, machinery or other form.

The above-mentioned unit illustrated as separating component can be or may not be physically separate, shows as unit The parts shown can be or may not be physical location, i.e. may be located at a place, it is also possible to be distributed to multiple network list In unit;Part or all of unit therein can be selected according to the actual needs to realize the purpose of the present embodiment scheme.

It addition, each functional unit in various embodiments of the present invention can be fully integrated in a processing unit, it is possible to Being that each unit is individually as a unit, it is also possible to two or more unit are integrated in a unit;Above-mentioned Integrated unit both can realize to use the form of hardware, it would however also be possible to employ hardware adds the form of SFU software functional unit and realizes.

One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can be passed through The hardware that programmed instruction is relevant completes, and aforesaid program can be stored in a computer read/write memory medium, this program Upon execution, perform to include the step of said method embodiment;And aforesaid storage medium includes: movable storage device, read-only Memorizer (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or The various media that can store program code such as person's CD.

Or, if the above-mentioned integrated unit of the present invention is using the form realization of software function module and as independent product When selling or use, it is also possible to be stored in a computer read/write memory medium.Based on such understanding, the present invention implements The part that prior art is contributed by the technical scheme of example the most in other words can embody with the form of software product, This computer software product is stored in a storage medium, including some instructions with so that a computer equipment is (permissible It is personal computer, server or the network equipment etc.) perform all or part of of method described in each embodiment of the present invention. And aforesaid storage medium includes: movable storage device, ROM, RAM, magnetic disc or CD etc. are various can store program code Medium.

The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited thereto, and any Those familiar with the art, in the technical scope that the invention discloses, can readily occur in change or replace, should contain Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with described scope of the claims.

Claims (12)

1. the method detecting blood pressure, described method includes:
Mobile terminal launches the first ultrasonic signal of first frequency;
Receive the second ultrasonic signal, identify the second frequency of described second ultrasonic signal;
The first physical sign parameters of described mobile terminal user is determined based on described first frequency and described second frequency;Described The blood flowing speed of mobile terminal user described in one parameter characterization;
Preset corresponding relation based on first and obtain the pressure value that described first physical sign parameters is corresponding.
Method the most according to claim 1, it is characterised in that the first of the transmitting first frequency of described mobile terminal is ultrasonic Ripple signal, including:
Described mobile terminal persistently launches the first ultrasonic signal of first frequency in the range of the very first time;
Described reception the second ultrasonic signal, identifies the second frequency of described second ultrasonic signal, including: receive multiple second Ultrasonic signal, identifies multiple second frequencies of the plurality of second ultrasonic signal;
Accordingly, described the first sign determining described mobile terminal user based on described first frequency and described second frequency Parameter, including:
Multiple first sign ginsengs of described mobile terminal user are determined based on described first frequency and the plurality of second frequency Number;
The meansigma methods obtaining described first physical sign parameters is calculated based on the plurality of first physical sign parameters.
Method the most according to claim 2, it is characterised in that described based on first preset corresponding relation obtain described first The pressure value that physical sign parameters is corresponding, including:
Preset corresponding relation based on first and obtain the pressure value corresponding to meansigma methods of described first physical sign parameters.
Method the most according to claim 1, it is characterised in that described true based on described first frequency and described second frequency First physical sign parameters of fixed described mobile terminal user, including:
Based on described first frequency, described second frequency, characterize the first of ultrasonic signal average propagation speed in human body Constant, characterize described first ultrasonic signal launch direction true with the second constant of the angle of the direction of flow of blood of user First physical sign parameters of fixed described mobile terminal user;
Wherein, described first physical sign parameters v meets:
v = c × f d 2 × f 0 × c o s θ ;
Wherein, c represents ultrasonic signal the mean propagation velocity in human body;fdRepresent described second frequency;f0Represent described One frequency;θ represents the angle launching direction and the direction of flow of blood of user of described first ultrasonic signal.
Method the most according to claim 4, it is characterised in that described based on first preset corresponding relation obtain described first The pressure value that physical sign parameters is corresponding, including:
It is pre-configured with the first proportionate relationship;Described first proportionate relationship characterizes described first physical sign parameters and pressure value meets direct ratio Example relation;
The pressure value that described first physical sign parameters is corresponding is obtained based on described first proportionate relationship.
Method the most according to claim 5, it is characterised in that described first proportionate relationship meets:
P=K (V-noise);
Wherein, P represents pressure value;V represents the first physical sign parameters;K represents proportionality coefficient;Noise represents preset noise constant.
7. a mobile terminal, described mobile terminal includes: supersonic sensing unit, the first computing unit and second calculate single Unit;Wherein,
Described supersonic sensing unit, for launching the first ultrasonic signal of first frequency;And receive the second ultrasound wave letter Number, identify the second frequency of described second ultrasonic signal;
Described first computing unit, for determining described mobile terminal user based on described first frequency and described second frequency The first physical sign parameters;The blood flowing speed of mobile terminal user described in described first parameter characterization;
Described second computing unit, obtains, for presetting corresponding relation based on first, the blood pressure that described first physical sign parameters is corresponding Value.
Mobile terminal the most according to claim 7, it is characterised in that described supersonic sensing unit, for when first The first ultrasonic signal of first frequency is persistently launched in the range of between;And receive multiple second ultrasonic signal, identify described Multiple second frequencies of multiple second ultrasonic signals;
Based on described first frequency and the plurality of second frequency, described first computing unit, for determining that described mobile terminal makes Multiple first physical sign parameters of user;Calculate based on the plurality of first physical sign parameters and obtain the average of described first physical sign parameters Value.
Mobile terminal the most according to claim 8, it is characterised in that described second computing unit, for pre-based on first If the pressure value that the meansigma methods of corresponding relation described first physical sign parameters of acquisition is corresponding.
Mobile terminal the most according to claim 7, it is characterised in that described first computing unit, for based on described the One frequency, described second frequency, characterize the first constant of ultrasonic signal average propagation speed in human body, characterize described the Second constant of the angle of the direction of flow of blood launching direction and user of one ultrasonic signal determines described mobile terminal First physical sign parameters of user;
Wherein, described first physical sign parameters v meets:
v = c × f d f 0 × cos θ ;
Wherein, c represents ultrasonic signal the mean propagation velocity in human body;fdRepresent described second frequency;f0Represent described One frequency;θ represents the angle launching direction and the direction of flow of blood of user of described first ultrasonic signal.
11. mobile terminals according to claim 10, it is characterised in that described second computing unit, are used for being pre-configured with First proportionate relationship;Described first proportionate relationship characterizes described first physical sign parameters and pressure value meets proportional relationship;Based on Described first proportionate relationship obtains the pressure value that described first physical sign parameters is corresponding.
12. mobile terminals according to claim 11, it is characterised in that described first proportionate relationship meets:
P=K (V-noise);
Wherein, P represents pressure value;V represents the first physical sign parameters;K represents proportionality coefficient;Noise represents preset noise constant.
CN201610480025.5A 2016-06-27 2016-06-27 A kind of method and mobile terminal detecting blood pressure CN106175832B (en)

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