CN108354612A - A kind of signal processing method and device - Google Patents

A kind of signal processing method and device Download PDF

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Publication number
CN108354612A
CN108354612A CN201810058242.4A CN201810058242A CN108354612A CN 108354612 A CN108354612 A CN 108354612A CN 201810058242 A CN201810058242 A CN 201810058242A CN 108354612 A CN108354612 A CN 108354612A
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China
Prior art keywords
heart
signal data
impact
impact signal
characteristic parameter
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CN201810058242.4A
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CN108354612B (en
Inventor
梁杰
刘洪涛
孟亚斌
范欣薇
龚梅军
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Shenzhen Hetai Intelligent Home Appliance Controller Co ltd
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Shenzhen Het Data Resources and Cloud Technology Co Ltd
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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
    • A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
    • A61B5/1102—Ballistocardiography
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0002—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network
    • A61B5/0004—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network characterised by the type of physiological signal transmitted
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
    • A61B5/1126—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb using a particular sensing technique
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7221—Determining signal validity, reliability or quality
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7225—Details of analog processing, e.g. isolation amplifier, gain or sensitivity adjustment, filtering, baseline or drift compensation

Abstract

The embodiment of the invention discloses a kind of signal processing method and device, wherein signal processing method includes：Obtain the heart impact signal data and heart vibration signal data of user in a period of time, the heart impact signal data and the heart vibration signal data are synchronous in time, obtain the linkage characteristic parameter of the heart impact signal data and the heart vibration signal data, it is described linkage characteristic parameter be used for indicate the heart impact signal data and the heart vibration signal data when/frequency domain on correlative character, export the linkage characteristic parameter.Using the embodiment of the present invention, more characteristic parameters can be got, more information are provided for prevention of cardiovascular disease, more effectively utilize heart impact signal and heart vibration signal.

Description

A kind of signal processing method and device
Technical field
The present invention relates to field of computer technology more particularly to a kind of signal processing methods and device.
Background technology
With the development of computer technology, large-tonnage product, such as intelligence are emerged in Intelligent wearable and non-wearable market Energy bracelet, smartwatch etc. are all that common are the product for closing health detection in people's daily life.In addition, also having paving in bed Sleep monitor band, intelligent mattress etc. the non-wearable intelligent equipment of Human Physiology information is detected using acceleration transducer. Core physiologic information acquired in this kind of non-wearable intelligent equipment is that the heart impacts (Ballistocardiogram, abbreviation BCG) Signal, BCG signals are primarily used to obtain real-time average heart rate this parameter.BCG signals mainly describe heart and are shrinking Blood acts on the recoil of blood vessel when the arterial blood in heart being injected to the arch of aorta in the process.
Currently, health detection product on the market is mainly sensed by different kinetic sensors such as piezoelectric membrane The sensors such as device, piezoresistive transducer, acceleration transducer, gyro sensor obtain the dynamic letter of BCG signals, breath signal and body Number, real-time average heart rate, respiratory rate and body energy etc. are calculated according to the BCG signals, breath signal and body movement signal got Parameter, can be with the variation of the human body physical sign in Preliminary detection sleep procedure and sleep quality according to these parameter values.However, BCG believes Include a large amount of physiologic information in number, existing health detection is defeated only by this parameter of the real-time average heart rate of BCG signal acquisitions Go out that parameter is single, more information are lacked to the prevention of other angiocardiopathies.
Invention content
The embodiment of the present invention provides a kind of signal processing method, can utilize the linkage of heart impact signal and heart vibration signal Characteristic gets more characteristic parameters, and more information are provided for prevention of cardiovascular disease, more effectively utilizes heart impact letter Number and heart vibration signal.
In a first aspect, an embodiment of the present invention provides a kind of signal processing method, this method includes：
Obtain the heart impact signal data and heart vibration signal data of user in a period of time, the heart impact signal data It is synchronous in time with the heart vibration signal data；
Obtain the linkage characteristic parameter of the heart impact signal data and the heart vibration signal data, the linkage feature Parameter be used for indicate the heart impact signal data and the heart vibration signal data when/frequency domain on correlative character；
Export the linkage characteristic parameter.
In a kind of possible design, the linkage characteristic parameter includes the rhythm and pace of moving things phase of heart impact signal and heart vibration signal Dryness parameter；
The linkage characteristic parameter for obtaining the heart impact signal data and the heart vibration signal data, including：
According to the heart impact signal data and the heart vibration signal data, the heart impact signal and the heart are obtained The crosspower spectrum of vibration signal；
According to the heart impact signal data and the heart vibration signal data, the heart impact signal is obtained on frequency domain With the coherence factor of the heart vibration signal；
According to the crosspower spectrum and the coherence factor, the section of the heart impact signal and the heart vibration signal is obtained Restrain coherence parameter.
In a kind of possible design, the linkage characteristic parameter includes heart impact signal with heart vibration signal first when Domain interval；
The linkage characteristic parameter for obtaining the heart impact signal data and the heart vibration signal data, including：
According to the heart impact signal data and the heart vibration signal data, obtains the heart vibration signal peak value and correspond to First time point and between first heart impact signal peak value corresponding second time point after the first time point Time interval is as first time domain interval；
Wherein, the heart impact signal data include at least one heart impact signal peak value, the heart vibration signal Data include at least one heart vibration signal peak value.
In a kind of possible design, the method further includes：
According to the heart impact signal data, heart impact signal peak value corresponding third time point is obtained and in the third Before time point and with the third time point, nearest impact is saturated the time interval between node as the second time domain interval, and Obtain the third time point and after the third time point first recoil saturation node between time interval conduct Third time domain interval；
Export second time domain interval and the third time domain interval；
Wherein, the heart impact signal data include at least one heart impact signal peak value, at least one impact saturation section Point and at least one recoil are saturated node.
In a kind of possible design, the method further includes：
According to the heart impact signal data, heart impact signal peak value corresponding 4th time point is obtained；
According to the heart impact signal data, obtain heart impact signal in the time domain before the 4th time point and with institute It states between the impact saturation node of the 4th time point recently and the first recoil saturation node after the 4th time point Blood impact area；
Export the blood impact area.
In a kind of possible design, after the output linkage characteristic parameter, the method further includes：
The linkage characteristic parameter is analyzed, corresponding first analysis result of the linkage characteristic parameter is obtained；
The prompt message for including first analysis result is sent to target terminal corresponding with the user.
In a kind of possible design, the method further includes：
If detecting the linkage characteristic parameter not in target zone, second time domain interval, the third are analyzed Time domain interval and the blood impact area obtain the second analysis result, and second analysis result is sent to the use The corresponding target terminal in family.
Second aspect, an embodiment of the present invention provides a kind of signal processing apparatus, which includes：
First acquisition module, the heart impact signal data for obtaining user in a period of time and heart vibration signal data, The heart impact signal data and the heart vibration signal data are synchronous in time；
Second acquisition module, the linkage feature for obtaining the heart impact signal data and the heart vibration signal data Parameter, the linkage characteristic parameter for indicate the heart impact signal data and the heart vibration signal data when/frequency domain On correlative character；
Output module, for exporting the linkage characteristic parameter.
In a kind of possible design, the linkage characteristic parameter includes the rhythm and pace of moving things phase of heart impact signal and heart vibration signal Dryness parameter；
Second acquisition module includes：
First acquisition unit, for according to the heart impact signal data and the heart vibration signal data, described in acquisition The crosspower spectrum of heart impact signal and the heart vibration signal；
Second acquisition unit is used for according to the heart impact signal data and the heart vibration signal data, on frequency domain Obtain the coherence factor of the heart impact signal and the heart vibration signal；
Third acquiring unit, for according to the crosspower spectrum and the coherence factor, obtain the heart impact signal with The rhythm and pace of moving things coherence parameter of the heart vibration signal.
In a kind of possible design, the linkage characteristic parameter includes heart impact signal with heart vibration signal first when Domain interval；
Second acquisition module includes：
4th acquiring unit, for according to the heart impact signal data and the heart vibration signal data, described in acquisition The corresponding first time point of heart vibration signal peak value and the first heart impact signal peak value after the first time point correspond to The second time point between time interval as first time domain interval；
Wherein, the heart impact signal data include at least one heart impact signal peak value, the heart vibration signal Data include at least one heart vibration signal peak value.
In a kind of possible design, described device further includes：
Third acquisition module, for according to the heart impact signal data, obtaining the corresponding third of heart impact signal peak value Time interval between time point and the impact saturation node nearest before the third time point and with the third time point As the second time domain interval, and obtain the third time point and the first recoil saturation node after the third time point Between time interval as third time domain interval；
The output module is additionally operable to export second time domain interval and the third time domain interval；
Wherein, the heart impact signal data include at least one heart impact signal peak value, at least one impact saturation section Point and at least one recoil are saturated node.
In a kind of possible design, described device further includes：
4th acquisition module, for according to the heart impact signal data, obtaining heart impact signal peak value the corresponding 4th Time point；
5th acquisition module, is additionally operable to according to the heart impact signal data, obtains heart impact signal in the time domain in institute It states the impact nearest before the 4th time point and with the 4th time point and is saturated node and the head after the 4th time point Blood impact area between a recoil saturation node；
The output module is additionally operable to export the blood impact area.
In a kind of possible design, the output module includes：
Analytic unit obtains the linkage characteristic parameter corresponding for analyzing the linkage characteristic parameter One analysis result；
Transmission unit, for sending the prompt for including first analysis result to target terminal corresponding with the user Information.
In a kind of possible design, the output module is additionally operable to：
If detecting the linkage characteristic parameter not in target zone, second time domain interval, the third are analyzed Time domain interval and the blood impact area obtain the second analysis result, and second analysis result is sent to the use The corresponding target terminal in family.
The third aspect, an embodiment of the present invention provides a kind of electronic equipment, the electronic equipment include processor, input set Standby, output equipment and memory, the processor, input equipment, output equipment and memory are connected with each other, wherein described to deposit Reservoir is used to store the computer program for supporting that terminal executes the above method, and the computer program includes program instruction, described Processor is configured for calling described program instruction, the method for executing above-mentioned first aspect.
Fourth aspect, an embodiment of the present invention provides a kind of computer readable storage medium, the computer storage media It is stored with computer program, the computer program includes program instruction, and described program instruction makes institute when being executed by a processor State the method that processor executes above-mentioned first aspect.
The embodiment of the present invention, should by obtaining the heart impact signal data and heart vibration signal data of user in a period of time Heart impact signal data and the heart vibration signal data are synchronous in time, then obtain the heart impact signal data and heart vibrations The linkage characteristic parameter of signal data, the linkage characteristic parameter is for indicating the heart impact signal data and the heart vibration signal number According to when/frequency domain on correlative character, finally export the linkage characteristic parameter, can utilize heart impact signal and the heart vibrations letter Number linkage characteristic, get more characteristic parameters, provide more information for prevention of cardiovascular disease, more effectively utilize Heart impact signal and heart vibration signal.
Description of the drawings
Technical solution in order to illustrate the embodiments of the present invention more clearly, below will be to needed in embodiment description Attached drawing is briefly described, it should be apparent that, drawings in the following description are some embodiments of the invention, general for this field For logical technical staff, without creative efforts, other drawings may also be obtained based on these drawings.
Fig. 1 is a kind of schematic diagram of the real-time acquisition system of signal；
Fig. 2 is a kind of schematic flow diagram of signal processing method provided in an embodiment of the present invention；
Fig. 3 is the schematic diagram of SCG signals and BCG signals in time domain；
Fig. 4 is the schematic flow diagram of another signal processing method provided in an embodiment of the present invention；
Fig. 5 is a kind of schematic block diagram of signal processing apparatus provided in an embodiment of the present invention；
Fig. 6 is the schematic block diagram of a kind of electronic equipment provided in an embodiment of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation describes, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts Example, shall fall within the protection scope of the present invention.
It should be appreciated that description and claims of this specification and the term " first " in the attached drawing, " second " etc. It is for distinguishing different objects, rather than for describing particular order.In addition, term " comprising " and " having " and they are any Deformation, it is intended that cover and non-exclusive include.Such as contain the process of series of steps or unit, method, system, product Or equipment the step of being not limited to list or unit, but further include the steps that optionally not listing or unit, or it can Selection of land further includes for the intrinsic other steps of these processes, method, product or equipment or unit.
It is also understood that referenced herein " embodiment " it is meant that describe in conjunction with the embodiments special characteristic, structure or Characteristic may be embodied at least one embodiment of the present invention.Each position in the description shows that the phrase might not Identical embodiment is each meant, nor the independent or alternative embodiment with other embodiments mutual exclusion.People in the art Member explicitly and implicitly understands that embodiment described herein can be combined with other embodiments.
It will be further appreciated that the term "and/or" used in description of the invention and the appended claims is Refer to any combinations and all possible combinations of one or more of associated item listed, and includes these combinations.
As shown in Figure 1, be a kind of schematic diagram of the real-time acquisition system of signal, involved heart impact in the embodiment of the present invention (Ballistocardiogram, abbreviation BCG) signal data and the heart shake (Seismocardiogram, abbreviation SCG) signal number It is obtained according to system shown in FIG. 1 can be used.The embodiment of the present invention can by using different sensor-based systems, such as optical fiber, Piezoelectric film sensor (PVDF), acceleration transducer, gyro sensor, bioradar, piezoresistive transducer, displacement sensing The sensors such as device, piezoelectric cable obtain BCG signals and SCG signals.For example, the clothing at the cardiac position of user chest can be passed through Acceleration gyro sensor is installed on clothes and acquires SCG signals, it is thin that piezoelectricity is installed on the clothes at user's back cardiac position Film sensors acquire BCG signals.The BCG signals of collected user and SCG signals are passed through into analog-to-digital conversion (A/D conversions) device again Be digitized processing, then by after digitized processing BCG signals and SCG signals pass through field programmable gate array (Field- Programmable Gate Array, abbreviation FPGA) Digital Signal Processing is carried out, obtain the BCG signal datas after removal noise With SCG signal datas, and by after the removal noise BCG signal datas and SCG signal datas be sent to wireless transmitting system, example Such as bluetooth, WLAN (Wireless Fidelity, abbreviation WIFI), the day radio frequency (Radio Frequency, abbreviation RF) The radio transmitting devices such as line, wireless transmitting system can by after the removal noise BCG signal datas and SCG signal datas send To remote server, remote server receives the BCG signal datas after the removal noise and SCG signal datas, can be to this BCG signal datas and SCG signal datas after removal noise are handled, and the handling result is sent to user.
Below in conjunction with attached drawing 2- attached drawings 6, signal processing method provided in an embodiment of the present invention and device are carried out detailed It introduces.
It is a kind of schematic flow diagram of signal processing method provided in an embodiment of the present invention, the embodiment of the present invention referring to Fig. 2 Signal processing method may be implemented including tablet computer, desktop computer, server etc. have signal processing function device On, the embodiment of the present invention is by taking server as an example, as shown, the signal processing method may include：
S201 obtains the heart impact signal data and heart vibration signal data of user in a period of time, the heart impact letter Number and the heart vibration signal data are synchronous in time.
In embodiments of the present invention, sensor can acquire user's heart impact signal interior for a period of time and heart vibrations simultaneously Signal, such as acquire heart impact signal and heart vibration signal in user 1 minute (min) simultaneously, analog-digital converter is by user one Heart impact signal and heart vibration signal in the section time are digitized processing, obtain heart impact signal data and heart vibration signal Data, digital signal processor such as FPGA, Digital Signal Processing (Digital Signal Processing, DSP) etc., then will The heart impact signal data and heart vibration signal data are carried out except processing of making an uproar, and wireless transmitting system can will be impacted except the heart after making an uproar Signal data and heart vibration signal data are sent to long-range server.The server can receive wireless transmitting system transmission The heart impact signal data of user and heart vibration signal data in a period of time.Wherein, the heart impact signal data and heart vibrations Signal data synchronizes in time, i.e., acquires the heart impact signal and heart vibration signal of user, and the heart impact signal simultaneously It is consistent with the sample frequency of the heart vibration signal, to ensure that the heart impact signal data are synchronous with heart vibration signal data Property.
Optionally, server can send acquisition instructions to the real-time acquisition system of signal at regular intervals, which refers to Order may include sample frequency and synchronised clock, and the real-time acquisition system of the signal acquires user according to the acquisition instructions of server Heart impact signal and heart vibration signal, and the heart impact signal and the heart vibration signal are handled, will be obtained after processing Heart impact signal data and heart vibration signal data be sent to server, the server reception processing after obtain the heart impact letter Number and heart vibration signal data.
S202 obtains the linkage characteristic parameter of the heart impact signal data and the heart vibration signal data, described Dynamic characteristic parameter be used to indicate the heart impact signal data and the heart vibration signal data when/frequency domain on correlation it is special Sign.
In embodiments of the present invention, server can be special according to the linkage of heart impact signal and heart vibration signal in phase Property, the linkage characteristic parameter of above-mentioned heart impact signal data and above-mentioned heart vibration signal data is obtained, which can For indicate above-mentioned heart impact signal data and above-mentioned heart vibration signal data when/frequency domain on correlative character.The connection Dynamic characteristic parameter may include the time domain interval between BCG signal peak value points and SCG signal peak value points, can also include that BCG believes Number and SCG signals rhythm and pace of moving things coherence parameter.Wherein, BCG signals mainly reflect that human heart will be in heart in contraction process Arterial blood when injecting to the arch of aorta blood recoil of blood vessel acted on, SCG signals mainly reflect to be occurred due to sinoatrial node Nerve impulse is transmitted to the myocardial contraction diastole that cardiac muscle makes human body, and the myocardial contraction of human body can generate pressure and make the human body heart Arterial blood in dirty projects.
Optionally, if the linkage characteristic parameter of above-mentioned heart impact signal data and above-mentioned heart vibration signal data includes heart punching The rhythm and pace of moving things coherence parameter of signal and heart vibration signal is hit, server can shake according to above-mentioned heart impact signal data and the above-mentioned heart Dynamic signal data, obtains the cross-correlation function of the heart impact signal and the heart vibration signal in same cardiac cycle, then to this Cross-correlation function carries out the crosspower spectrum that Fourier transformation obtains the heart impact signal and the heart vibration signal.The server may be used also According to above-mentioned heart impact signal data and above-mentioned heart vibration signal data, to obtain the heart impact signal and heart vibrations letter respectively Number auto-power spectrum the heart is obtained on frequency domain further according to the heart impact signal and the respective auto-power spectrum of heart vibration signal The coherence factor of impact signal and the heart vibration signal.The server can be obtained according to the crosspower spectrum and the coherence factor The rhythm and pace of moving things coherence parameter of the heart impact signal and the heart vibration signal.Wherein, which can be used for reflecting Human body myocardial contraction and the consistency in blood pump blood linkage process and concertedness feature.
For example, for the BCG signals and SCG signals of same amount of time, server can first obtain J-J Interval and MC-MC Interval sequences, J-J Interval sequences indicate the BCG signal sequences in a cardiac cycle, MC-MC Interval sequences indicate and the SCG signal sequences in J-J Interval sequences same cardiac cycles；Assuming that the J- of BCG signals J Interval periodic sequences are x (t), and the MC-MC Interval periodic sequences of SCG signals are y (t), and server can obtain The BCG signals and the cross-correlation function of the SCG signals within same cardiac cycle, i.e. the cross-correlation function R of x (t) and y (t)xy (τ) is such as shown in formula (1)：
Again to the cross-correlation function R of x (t) and y (t)xy(τ) carries out Fourier transformation, obtains the BCG signals and SCG letters Number crosspower spectrum Sxy(ω)：
Server can also obtain the BCG signals and auto-power spectrum R of the SCG signals within same cardiac cycle respectivelyxx (ω)、Ryy(ω), according to the BCG signals and the respective auto-power spectrum R of the SCG signalsxx(ω)、Ryy(ω), obtains on frequency domain The coherence factor C of the BCG signals and the SCG signalsxy(ω)：
Server can be according to crosspower spectrum Sxy(ω) and coherence factor Cxy(ω) obtains the BCG signals and is somebody's turn to do The rhythm and pace of moving things coherence parameter Coherence of SCG signals：
Coherence=Cxy(ω)*[Sxy(ω)]2(4)
It is cardiovascular steady with the system during cardiomotility that rhythm and pace of moving things coherence parameter Coherence can be also used for monitoring Qualitative and harmony situation.
It should be noted that cardiac cycle (cardiac cycle) refers to from the starting of a heartbeat to heartbeat next time Starting, the process that cardiovascular system is undergone.Heart is often shunk and diastole once constitutes a cardiac cycle.
Optionally, if the linkage characteristic parameter of above-mentioned heart impact signal data and above-mentioned heart vibration signal data includes heart punching The first time domain interval of signal and heart vibration signal is hit, server can shake according to above-mentioned heart impact signal data and the above-mentioned heart Signal data obtains the corresponding first time point of heart vibration signal peak value, and obtains the first heart after the first time point Impact signal peak value corresponding second time point, then the time interval obtained between the first time point and second time point are made For first time domain interval.Wherein, above-mentioned heart impact signal data may include at least one heart impact signal peak value, the above-mentioned heart Vibration signal data may include at least one heart vibration signal peak value.
For example, as shown in figure 3, be the schematic diagram of SCG signals and BCG signals in time domain, SCG signal waveforms shown in Fig. 3 It is the SCG signals in a cardiac cycle, BCG signal waveforms shown in Fig. 3 are believed with the BCG of SCG signals same cardiac cycle Number.MC can indicate that the peak value of SCG signal main peaks, J can indicate that the peak value of BCG signal main peaks, server can obtain heart shake Move the corresponding first time point T of signal peak MCMC, and obtain in first time point TMCFirst heart impact signal peak later The corresponding second time point T of value JJ, then obtain first time point TMCWith second time point TJBetween time interval conduct First time domain interval PPTT=TJ-TMC.Wherein, first time domain interval PPTT can be used for reflecting human body cardiac motion and blood Pump blood and fill process whether normal physical signs, if such as the first time domain interval PPTT in target zone 0.1~0.3 second (s) It is interior, it is normal to indicate that human body cardiac motion and blood pump blood fill process, if the first time domain interval PPTT not target zone 0.1~ In 0.3 second (s), expression human body cardiac motion and the full process of blood pump blood are abnormal etc..
It should be noted that all only there are one peak values within a cardiac cycle for SCG signals and BCG signals.
S203 exports the linkage characteristic parameter.
In embodiments of the present invention, server can export the heart impact signal data got and heart vibration signal data Linkage characteristic parameter so that user according to the linkage characteristic parameter, analyze the linkage characteristic parameter reflection angiocarpy and the heart The case where dirty active procedure, can more effectively utilize to provide more characteristic parameter information for prevention of cardiovascular disease Heart impact signal and heart vibration signal.
Optionally, server can send the push for including above-mentioned linkage characteristic parameter to target terminal corresponding to the user Information, the pushed information can also include some reference informations of the linkage characteristic parameter, in order to ordinary user (non-medical care people Member) it can be according to the physiological health situation of the reference information analysis user oneself of linkage characteristic parameter and the characteristic parameter that links.For example, Server can be sent comprising the first time domain interval to the terminal of user oneself and/or with the terminal of the contact person of user-association and The pushed information of rhythm and pace of moving things coherence parameter, and the pushed information may include current rhythm and pace of moving things coherence parameter, the first time domain It is spaced normal reference range 0.1s~0.3s etc. of PPTT and PPTT.
Further alternative, server can also join according to rhythm and pace of moving things coherence of user's body state in the case of health Numerical value generates the tendency chart of rhythm and pace of moving things coherence parameter, the terminal to the terminal of user oneself and/or with the contact person of user-association Send the pushed information for including the tendency chart.
Optionally, server can analyze above-mentioned linkage characteristic parameter, obtain above-mentioned linkage characteristic parameter and correspond to The first analysis result, and the prompt message comprising first analysis result is sent to target terminal corresponding to the user.Clothes Business device can also detect first analysis result, if the risk class of first analysis result is more than default risk class, service Device sends alarm instruction to target terminal corresponding to the user, which receives alarm instruction, output Prompt messages, when there may be the households, friend or user that can notify user when angiocardiopathy hidden danger in time by user Oneself etc. can monitor the physiological health situation of user in real time.
The embodiment of the present invention, should by obtaining the heart impact signal data and heart vibration signal data of user in a period of time Heart impact signal data and the heart vibration signal data are synchronous in time, then obtain the heart impact signal data and heart vibrations The linkage characteristic parameter of signal data, the linkage characteristic parameter is for indicating the heart impact signal data and the heart vibration signal number According to when/frequency domain on correlative character, finally export the linkage characteristic parameter, can utilize heart impact signal and the heart vibrations letter Number linkage characteristic, get more characteristic parameters, provide more information for prevention of cardiovascular disease, more effectively utilize Heart impact signal and heart vibration signal.
It is the schematic flow diagram of another signal processing method provided in an embodiment of the present invention referring to Fig. 4, the present invention is implemented The signal processing method of example may be implemented in the dress including tablet computer, desktop computer, server etc. with signal processing function It sets, the embodiment of the present invention is by taking server as an example, as shown, the signal processing method may include：
S401 obtains the heart impact signal data and heart vibration signal data of user in a period of time, the heart impact letter Number and the heart vibration signal data are synchronous in time.
S402 obtains the linkage characteristic parameter of the heart impact signal data and the heart vibration signal data, described Dynamic characteristic parameter be used to indicate the heart impact signal data and the heart vibration signal data when/frequency domain on correlation it is special Sign.
S403 exports the linkage characteristic parameter.
The step S401- steps S403 of the embodiment of the present invention please refers to the embodiment step S101- step S103 of Fig. 1, This is repeated no more.
S404 obtains heart impact signal peak value corresponding third time point and in institute according to the heart impact signal data The time interval between the impact saturation node nearest before third time point and the third time point is stated as the second time domain Interval, and obtain the third time point and after the third time point first recoil saturation node between time between Every as third time domain interval.
S405 exports second time domain interval and the third time domain interval.
In embodiments of the present invention, BCG signals mainly reflect human heart in contraction process by the arterial blood in heart Blood acts on the recoil of blood vessel when injecting to the arch of aorta.Server can be according to the above-mentioned heart impact signal number got According to, obtain heart impact signal peak value corresponding third time point, and obtain before the third time point and with the third time point Nearest impact is saturated node, obtains the time interval between third time point and impact saturation node as the second time domain Interval.The server can according to the above-mentioned heart impact signal data got, obtain the heart impact signal peak value it is corresponding should Third time point, and obtain the first recoil after the third time point and be saturated node, it obtains third time point and this is anti- Time interval between punching saturation node is as third time domain interval.The server can export second time domain interval and this Three time domain intervals export more characteristic parameters by more characteristic informations in acquisition BCG signals, can be more effectively auxiliary Help user's prevention of cardiovascular disease.Wherein, the heart impact signal data include at least one heart impact signal peak value, it is at least one Impact saturation node and at least one recoil are saturated node.Second time domain interval and the third time domain interval can be used for characterizing The blood impact characteristics of user.
For example, as shown in figure 3, be the schematic diagram of SCG signals and BCG signals in time domain, BCG signal waveforms shown in Fig. 3 It is the BCG signals in a cardiac cycle；I can indicate that the impact saturation node before the blood impact arch of aorta, J can indicate The peak value of BCG signal main peaks, K indicates recoil saturation node, when server can obtain heart impact signal peak value J corresponding thirds Between point TJ, and obtain in third time point TJIt is preceding and with third time point TJNearest impact is saturated node I, obtain this Three time point TJTime interval between impact saturation node I is as the second time domain interval IJt=TJ-TI.Server can be with It obtains in third time point TJFirst recoil later is saturated node K, then obtains third time point TJIt is saturated and saves with the recoil Time interval between point K is as third time domain interval JKt=TK-TJ.Server can export the second time domain interval IJt and should Third time domain interval JKt.
It should be noted that BCG signals only include an impact saturation node, a BCG letter within a cardiac cycle Number peak value and a recoil saturation node.
It is further alternative, if above-mentioned linkage characteristic parameter not in target zone, illustrate the user cardiac motion and/or Blood pump blood process is likely to occur problem, and server can extract above-mentioned second time domain interval and above-mentioned third time domain interval, and Above-mentioned second time domain interval and above-mentioned third time domain interval are analyzed, if above-mentioned second time domain interval and above-mentioned third time domain interval exist In preset normal range (NR), server determines that the blood pump blood process of the user is normal, and is exported to the corresponding terminal of the user Analysis result, the analysis result can be the analytical conclusions and reference information of server, such as " linkage characteristic parameter is abnormal, Blood pump blood process is normal, and possible cause is cardiac motion or transmission process mistake " etc. information.When SCG signals and BCG signals When the characteristic parameter exception that links, by analyzing the characteristic parameter of BCG signals, the reason of blood pump blood process can be excluded, into one Step analyzes the reason of linkage characteristic parameter exception, is conducive to prevention of cardiovascular disease.
S406 obtains heart impact signal peak value corresponding 4th time point according to the heart impact signal data.
S407 obtains heart impact signal before the 4th time point in the time domain according to the heart impact signal data And nearest impact saturation node and the first recoil after the 4th time point is saturated node with the 4th time point Between blood impact area.
S408 exports the blood impact area.
In embodiments of the present invention, server can obtain heart impact according to the above-mentioned heart impact signal data got Signal peak corresponding 4th time point.Server can in the time domain be obtained according to the above-mentioned heart impact signal data got The impact nearest before the 4th time point and with the 4th time point of coring impact signal is saturated node and in the 4th time The blood impact area between first recoil saturation node after point.Server can export the blood impact area, pass through More characteristic informations in BCG signals are obtained, more characteristic parameters is exported, can more effectively assist user's prevention of cardiovascular Disease.Wherein, which includes at least one heart impact signal peak value, at least one impact saturation node and extremely Few recoil saturation node.
For example, as shown in figure 3, be the schematic diagram of SCG signals and BCG signals in time domain, BCG signal waveforms shown in Fig. 3 It is the BCG signals in a cardiac cycle；I can indicate that the impact saturation node before the blood impact arch of aorta, J can indicate The peak value of BCG signal main peaks, K indicate recoil saturation node, server can obtain heart impact signal peak value it is corresponding 4th when Between point TJ, server can obtain BCG signals in the 4th time point T in the time domainJIt is preceding and with the 4th time point TJNearest Impact is saturated node I and in the 4th time point TJThe blood impact area between first recoil saturation node K later AreaIJK：
Wherein, AmpBCGIndicate the amplitude of BCG signals.Server can export blood impact area AreaIJK。
It is further alternative, if above-mentioned linkage characteristic parameter not in target zone, illustrate the user cardiac motion and/or Blood pump blood process is likely to occur problem, and server can extract above-mentioned blood impact area, and analyze above-mentioned blood shock surface Product, if above-mentioned blood impact area, in preset normal range (NR), server determines that the blood pump blood process of the user is normal, and The second analysis result is exported to the corresponding terminal of the user, which can be the analytical conclusions and ginseng of server Information is examined, such as " linkage characteristic parameter is abnormal, and blood pump blood process is normal, and possible cause is cardiac motion or is transmitted across path difference The information such as mistake ".It, can by analyzing the characteristic parameter of BCG signals when the linkage characteristic parameter exception of SCG signals and BCG signals The reason of to exclude blood pump blood process, further analyzes the reason of linkage characteristic parameter exception, is conducive to prevention of cardiovascular Disease.
It is further optional, if above-mentioned linkage characteristic parameter not in target zone, illustrate the user cardiac motion and/ Or blood pump blood process is likely to occur problem, server can extract above-mentioned second time domain interval, above-mentioned third time domain interval with And above-mentioned blood impact area obtains the second analysis result, the characteristic parameter of comprehensive analysis BCG signals, and by the second analysis result It is sent to the corresponding target terminal of user, which can be the analytical conclusions and reference information of server, lead to The characteristic parameter for crossing analysis BCG signals can more accurately analyze the reason of linkage characteristic parameter exception.
The embodiment of the present invention by obtaining the heart impact signal data and heart vibration signal data of user in a period of time, then The linkage characteristic parameter for obtaining the heart impact signal data and the heart vibration signal data exports the linkage characteristic parameter, then root According to the heart impact signal data, the second time domain interval and third time domain interval for characterizing blood of human body impact characteristics are obtained, Second time domain interval and third time domain interval are exported, further according to heart impact signal data, obtains the blood punching of heart impact signal Area is hit, can be obtained linkage characteristic parameter according to the linkage characteristic of heart impact signal and heart vibration signal, can also get The more characteristic parameters of heart impact signal, output parameter is various, provides more information for prevention of cardiovascular disease, can more fill Divide land productivity motive impact signal and heart vibration signal.
The embodiment of the present invention also provides a kind of signal processing apparatus, and the terminal is for executing aforementioned any one of them method Module.Specifically, it is a kind of schematic block diagram of signal processing apparatus provided in an embodiment of the present invention referring to Fig. 5.This implementation Example signal processing apparatus include：First acquisition module 10, the second acquisition module 20, output module 30, third acquisition module 40, 4th acquisition module 50 and the 5th acquisition module 60.
First acquisition module 10, the heart impact signal data for obtaining user in a period of time and heart vibration signal number According to the heart impact signal data and the heart vibration signal data are synchronous in time.
Specifically, sensor can acquire user's heart impact signal and heart vibration signal interior for a period of time simultaneously, such as Acquire heart impact signal and heart vibration signal in user 1 minute (min) simultaneously, analog-digital converter by user for a period of time in Heart impact signal and heart vibration signal are digitized processing, obtain heart impact signal data and heart vibration signal data, number Signal processor (such as FPGA, DSP) again carries out the heart impact signal data and heart vibration signal data except processing of making an uproar, wirelessly Transmission system can by except after making an uproar heart impact signal data and heart vibration signal data be sent to long-range server.The service First acquisition module 10 of device can receive wireless transmitting system transmission a period of time in user heart impact signal data and Heart vibration signal data.Wherein, the heart impact signal data and heart vibration signal data are synchronous in time, i.e., acquire use simultaneously The heart impact signal and heart vibration signal at family, and the sample frequency of the heart impact signal and the heart vibration signal is consistent, To ensure the synchronism of the heart impact signal data and heart vibration signal data.
Optionally, server can send acquisition instructions to the real-time acquisition system of signal at regular intervals, which refers to Order may include sample frequency and synchronised clock, and the real-time acquisition system of the signal acquires user according to the acquisition instructions of server Heart impact signal and heart vibration signal, and the heart impact signal and the heart vibration signal are handled, will be obtained after processing Heart impact signal data and heart vibration signal data be sent to server, the server reception processing after obtain the heart impact letter Number and heart vibration signal data.
Second acquisition module 20, the linkage for obtaining the heart impact signal data and the heart vibration signal data are special Levy parameter, the linkage characteristic parameter be used for indicate the heart impact signal data and the heart vibration signal data when/frequency Correlative character on domain.
Specifically, the second acquisition module 20 of server can be according to heart impact signal and heart vibration signal in phase Link characteristic, obtains the linkage characteristic parameter of above-mentioned heart impact signal data and above-mentioned heart vibration signal data, the linkage feature Parameter can be used to indicate that above-mentioned heart impact signal data and above-mentioned heart vibration signal data when/frequency domain on correlation it is special Sign.The linkage characteristic parameter may include the time domain interval between BCG signal peak value points and SCG signal peak value points, can also wrap Include the rhythm and pace of moving things coherence parameter of BCG signals and SCG signals.Wherein, BCG signals mainly reflect that human heart will in contraction process Blood acts on the recoil of blood vessel when arterial blood in heart injects to the arch of aorta, and SCG signals mainly reflect due to sinoatrial node The nerve impulse of generation is transmitted to the myocardial contraction diastole that cardiac muscle makes human body, and the myocardial contraction of human body can generate pressure and make Arterial blood in human heart projects.
Optionally, if the linkage characteristic parameter of above-mentioned heart impact signal data and above-mentioned heart vibration signal data includes heart punching Hit the rhythm and pace of moving things coherence parameter of signal and heart vibration signal.
Second acquisition module 20 includes first acquisition unit 21, second acquisition unit 22 and third acquiring unit 23.
First acquisition unit 21, for according to the heart impact signal data and the heart vibration signal data, obtaining institute State the crosspower spectrum of heart impact signal and the heart vibration signal.
Second acquisition unit 22 is used for according to the heart impact signal data and the heart vibration signal data, in frequency domain The upper coherence factor for obtaining the heart impact signal and the heart vibration signal.
Third acquiring unit 23, for according to the crosspower spectrum and the coherence factor, obtaining the heart impact signal With the rhythm and pace of moving things coherence parameter of the heart vibration signal.
It is specific optional, if the linkage characteristic parameter of above-mentioned heart impact signal data and above-mentioned heart vibration signal data includes The first acquisition unit 21 of the rhythm and pace of moving things coherence parameter of heart impact signal and heart vibration signal, server can be rushed according to the above-mentioned heart Signal data and above-mentioned heart vibration signal data are hit, the heart impact signal and the heart vibration signal in same cardiac cycle are obtained Cross-correlation function, then Fourier transformation is carried out to the cross-correlation function and obtains the mutual of the heart impact signal and the heart vibration signal Power spectrum.The second acquisition unit 22 of the server can also be according to above-mentioned heart impact signal data and above-mentioned heart vibration signal number According to obtaining the auto-power spectrum of the heart impact signal and the heart vibration signal respectively, shaken further according to the heart impact signal and the heart The respective auto-power spectrum of signal, obtains the coherence factor of the heart impact signal and the heart vibration signal on frequency domain.The server Third acquiring unit 23 can obtain the heart impact signal and the heart vibration signal according to the crosspower spectrum and the coherence factor Rhythm and pace of moving things coherence parameter.Wherein, which can be used for reflecting human body myocardial contraction and the linkage of blood pump blood Consistency in the process and concertedness feature.
For example, for the BCG signals and SCG signals of same amount of time, server can first obtain J-J Interval and MC-MC Interval sequences, J-J Interval sequences indicate the BCG signal sequences in a cardiac cycle, MC-MC Interval sequences indicate and the SCG signal sequences in J-J Interval sequences same cardiac cycles；Assuming that the J- of BCG signals J Interval periodic sequences are x (t), and the MC-MC Interval periodic sequences of SCG signals are y (t), and server can obtain The BCG signals and the cross-correlation function of the SCG signals within same cardiac cycle, i.e. the cross-correlation function R of x (t) and y (t)xy (τ) is such as shown in formula (1)：
Again to the cross-correlation function R of x (t) and y (t)xy(τ) carries out Fourier transformation, obtains the BCG signals and SCG letters Number crosspower spectrum Sxy(ω)：
Server can also obtain the BCG signals and auto-power spectrum R of the SCG signals within same cardiac cycle respectivelyxx (ω)、Ryy(ω), according to the BCG signals and the respective auto-power spectrum R of the SCG signalsxx(ω)、Ryy(ω), obtains on frequency domain The coherence factor C of the BCG signals and the SCG signalsxy(ω)：
Server can be according to crosspower spectrum Sxy(ω) and coherence factor Cxy(ω) obtains the BCG signals and is somebody's turn to do The rhythm and pace of moving things coherence parameter Coherence of SCG signals：
Coherence=Cxy(ω)*[Sxy(ω)]2 (4)
It is cardiovascular steady with the system during cardiomotility that rhythm and pace of moving things coherence parameter Coherence can be also used for monitoring Qualitative and harmony situation.
It should be noted that cardiac cycle (cardiac cycle) refers to from the starting of a heartbeat to heartbeat next time Starting, the process that cardiovascular system is undergone.Heart is often shunk and diastole once constitutes a cardiac cycle.
Optionally, if the linkage characteristic parameter of above-mentioned heart impact signal data and above-mentioned heart vibration signal data includes heart punching Hit the first time domain interval of signal and heart vibration signal.
Second acquisition module 20 includes the 4th acquiring unit 24, for according to the heart impact signal data and the heart Vibration signal data obtain the corresponding first time point of heart vibration signal peak value and the first heart after the first time point Time interval between impact signal peak value corresponding second time point is as first time domain interval.
It is specific optional, if the linkage characteristic parameter of above-mentioned heart impact signal data and above-mentioned heart vibration signal data includes 4th acquiring unit 24 of the first time domain interval of heart impact signal and heart vibration signal, server can be impacted according to the above-mentioned heart Signal data and above-mentioned heart vibration signal data obtain the corresponding first time point of heart vibration signal peak value, and obtain this First heart impact signal peak value corresponding second time point after one time point, then obtain the first time point and this second when Between put between time interval as first time domain interval.Wherein, above-mentioned heart impact signal data may include at least one Heart impact signal peak value, above-mentioned heart vibration signal data may include at least one heart vibration signal peak value.
For example, as shown in figure 3, be the schematic diagram of SCG signals and BCG signals in time domain, SCG signal waveforms shown in Fig. 3 It is the SCG signals in a cardiac cycle, BCG signal waveforms shown in Fig. 3 are believed with the BCG of SCG signals same cardiac cycle Number.MC can indicate that the peak value of SCG signal main peaks, J can indicate that the peak value of BCG signal main peaks, server can obtain heart shake Move the corresponding first time point T of signal peak MCMC, and obtain in first time point TMCFirst heart impact signal peak later The corresponding second time point T of value JJ, then obtain first time point TMCWith second time point TJBetween time interval conduct First time domain interval PPTT=TJ-TMC.Wherein, first time domain interval PPTT can be used for reflecting human body cardiac motion and blood Pump blood and fill process whether normal physical signs, if such as the first time domain interval PPTT in target zone 0.1~0.3 second (s) It is interior, it is normal to indicate that human body cardiac motion and blood pump blood fill process, if the first time domain interval PPTT not target zone 0.1~ In 0.3 second (s), expression human body cardiac motion and the full process of blood pump blood are abnormal etc..
It should be noted that all only there are one peak values within a cardiac cycle for SCG signals and BCG signals.
Output module 30, for exporting the linkage characteristic parameter.
Specifically, in embodiments of the present invention, the output module 30 of server can export the heart impact signal got The linkage characteristic parameter of data and heart vibration signal data, so that user according to the linkage characteristic parameter, analyzes the linkage feature The case where angiocarpy and cardiomotility process of parameter reflection, to provide more characteristic parameter letters for prevention of cardiovascular disease Breath, can more effectively utilize heart impact signal and heart vibration signal.
Optionally, it includes the linkage which, which is specifically used for sending to target terminal corresponding with the user, The pushed information of characteristic parameter.
Specific optional, the output module 30 of server can be sent to target terminal corresponding to the user comprising above-mentioned The pushed information of dynamic characteristic parameter, the pushed information can also include some reference informations of the linkage characteristic parameter, in order to Ordinary user's (Non-medical-staff) can analyze user's oneself according to the reference information of linkage characteristic parameter and the characteristic parameter that links Physiological health situation.For example, server can be sent to the terminal of user oneself and/or with the terminal of the contact person of user-association Include the pushed information of the first time domain interval and rhythm and pace of moving things coherence parameter, and the pushed information may include current rhythm and pace of moving things phase Normal reference range 0.1s~0.3s etc. of dryness parameter, the first time domain interval PPTT and PPTT.
Further alternative, server can also join according to rhythm and pace of moving things coherence of user's body state in the case of health Numerical value generates the tendency chart of rhythm and pace of moving things coherence parameter, the terminal to the terminal of user oneself and/or with the contact person of user-association Send the pushed information for including the tendency chart.
Optionally, which includes analytic unit 31 and transmission unit 32.
It is corresponding to obtain the linkage characteristic parameter for analyzing the linkage characteristic parameter for analytic unit 31 First analysis result.
Transmission unit 32, for sending carrying comprising first analysis result to target terminal corresponding with the user Show information.
Specific optional, the analytic unit 31 of server can analyze above-mentioned linkage characteristic parameter, obtain above-mentioned Link corresponding first analysis result of characteristic parameter, and transmission unit 32 can will be sent out comprising the prompt message of first analysis result Give target terminal corresponding to the user.Server can also detect first analysis result, if the wind of first analysis result Dangerous grade is more than default risk class, and server sends alarm instruction to target terminal corresponding to the user, and the target is whole Termination receives alarm instruction, exports prompt messages, when there may be can be in time when angiocardiopathy hidden danger by user The household, friend or user oneself etc. for notifying user, can monitor the physiological health situation of user in real time.
Optionally, which further includes：
Third acquisition module 40, for according to the heart impact signal data, obtaining heart impact signal peak value corresponding the Between time between three time points and the impact saturation node nearest before the third time point and with the third time point Every as the second time domain interval, and obtain the third time point and the first recoil saturation section after the third time point Time interval between point is as third time domain interval.
Above-mentioned output module 30 is additionally operable to export second time domain interval and the third time domain interval.
Specific optional, BCG signals mainly reflect that human heart injects to the arterial blood in heart in contraction process Blood acts on the recoil of blood vessel when the arch of aorta.The third acquisition module 40 of server can be rushed according to the above-mentioned heart got Hit signal data, obtain heart impact signal peak value corresponding third time point, and obtain before the third time point and with this The nearest impact of three time points is saturated node, obtains the time interval conduct between third time point and impact saturation node Second time domain interval.The third acquisition module 40 of the server can be obtained according to the above-mentioned heart impact signal data got The heart impact signal peak value corresponding third time point, and obtain the first recoil saturation section after the third time point Point obtains the time interval between third time point and recoil saturation node as third time domain interval.The server Above-mentioned output module 30 can export second time domain interval and the third time domain interval, more in BCG signals by obtaining Characteristic information exports more characteristic parameters, can more effectively assist user's prevention of cardiovascular disease.Wherein, which impacts Signal data includes at least one heart impact signal peak value, at least one impact saturation node and at least one recoil saturation section Point.Second time domain interval and the third time domain interval can be used for characterizing the blood impact characteristics of user.
For example, as shown in figure 3, be the schematic diagram of SCG signals and BCG signals in time domain, BCG signal waveforms shown in Fig. 3 It is the BCG signals in a cardiac cycle；I can indicate that the impact saturation node before the blood impact arch of aorta, J can indicate The peak value of BCG signal main peaks, K indicates recoil saturation node, when server can obtain heart impact signal peak value J corresponding thirds Between point TJ, and obtain in third time point TJIt is preceding and with third time point TJNearest impact is saturated node I, obtain this Three time point TJTime interval between impact saturation node I is as the second time domain interval IJt=TJ-TI.Server can be with It obtains in third time point TJFirst recoil later is saturated node K, then obtains third time point TJIt is saturated and saves with the recoil Time interval between point K is as third time domain interval JKt=TK-TJ.Server can export the second time domain interval IJt and should Third time domain interval JKt.
It should be noted that BCG signals only include an impact saturation node, a BCG letter within a cardiac cycle Number peak value and a recoil saturation node.
It is further alternative, if above-mentioned linkage characteristic parameter not in target zone, illustrate the user cardiac motion and/or Blood pump blood process is likely to occur problem, and the output module 30 of server can also extract above-mentioned second time domain interval and above-mentioned Three time domain intervals, and analyze above-mentioned second time domain interval and above-mentioned third time domain interval, if above-mentioned second time domain interval and above-mentioned For third time domain interval in preset normal range (NR), server determines that the blood pump blood process of the user is normal, and to the user Corresponding terminal exports analysis result, which can be the analytical conclusions and reference information of server, such as " linkage Characteristic parameter is abnormal, and blood pump blood process is normal, and possible cause is cardiac motion or transmission process mistake " etc. information.When SCG believes Number and BCG signals linkage characteristic parameter exception when, by analyze BCG signals characteristic parameter, blood pump blood mistake can be excluded The reason of journey, further analyzes the reason of linkage characteristic parameter exception, is conducive to prevention of cardiovascular disease.
Optionally, which further includes：
4th acquisition module 50, for according to the heart impact signal data, obtaining heart impact signal peak value corresponding the Four time points.
5th acquisition module 60, for according to the heart impact signal data, obtaining heart impact signal in the time domain in institute It states the impact nearest before the 4th time point and with the 4th time point and is saturated node and the head after the 4th time point Blood impact area between a recoil saturation node.
Above-mentioned output module 30 is additionally operable to export the blood impact area.
It is specific optional, the 4th acquisition module 50 of server can according to the above-mentioned heart impact signal data got, Obtain heart impact signal peak value corresponding 4th time point.5th acquisition module 60 of server can be got according to above-mentioned Heart impact signal data obtain heart impact signal before the 4th time point and nearest are rushed with the 4th time point in the time domain Hit saturation node and after the 4th time point first recoil saturation node between blood impact area.Server it is upper The blood impact area can be exported by stating output module 30, and by obtaining more characteristic informations in BCG signals, output is more Characteristic parameter can more effectively assist user's prevention of cardiovascular disease.Wherein, which includes at least one Heart impact signal peak value, at least one impact saturation node and at least one recoil are saturated node.
For example, as shown in figure 3, be the schematic diagram of SCG signals and BCG signals in time domain, BCG signal waveforms shown in Fig. 3 It is the BCG signals in a cardiac cycle；I can indicate that the impact saturation node before the blood impact arch of aorta, J can indicate The peak value of BCG signal main peaks, K indicate recoil saturation node, server can obtain heart impact signal peak value it is corresponding 4th when Between point TJ, server can obtain BCG signals in the 4th time point T in the time domainJIt is preceding and with the 4th time point TJNearest Impact is saturated node I and in the 4th time point TJThe blood impact area between first recoil saturation node K later AreaIJK：
Wherein, AmpBCGIndicate the amplitude of BCG signals.Server can export blood impact area AreaIJK。
It is further alternative, if above-mentioned linkage characteristic parameter not in target zone, illustrate the user cardiac motion and/or Blood pump blood process is likely to occur problem, and server can extract above-mentioned blood impact area, and analyze above-mentioned blood shock surface Product, if above-mentioned blood impact area, in preset normal range (NR), server determines that the blood pump blood process of the user is normal, and The second analysis result is exported to the corresponding terminal of the user, which can be the analytical conclusions and ginseng of server Information is examined, such as " linkage characteristic parameter is abnormal, and blood pump blood process is normal, and possible cause is cardiac motion or is transmitted across path difference The information such as mistake ".It, can by analyzing the characteristic parameter of BCG signals when the linkage characteristic parameter exception of SCG signals and BCG signals The reason of to exclude blood pump blood process, further analyzes the reason of linkage characteristic parameter exception, is conducive to prevention of cardiovascular Disease.
It is further optional, if above-mentioned linkage characteristic parameter not in target zone, illustrate the user cardiac motion and/ Or blood pump blood process is likely to occur problem, the output module 30 of server can also extract above-mentioned second time domain interval, above-mentioned The characteristic parameter of third time domain interval and above-mentioned blood impact area, comprehensive analysis BCG signals obtains the second analysis result, and Second analysis result is sent to the corresponding target terminal of user, second analysis result can be server analytical conclusions with And reference information can more accurately analyze the reason of linkage characteristic parameter exception by analyzing the characteristic parameter of BCG signals.
The embodiment of the present invention, should by obtaining the heart impact signal data and heart vibration signal data of user in a period of time Heart impact signal data and the heart vibration signal data are synchronous in time, then obtain the heart impact signal data and heart vibrations The linkage characteristic parameter of signal data, the linkage characteristic parameter is for indicating the heart impact signal data and the heart vibration signal number According to when/frequency domain on correlative character, finally export the linkage characteristic parameter, can utilize heart impact signal and the heart vibrations letter Number linkage characteristic, get more characteristic parameters, provide more information for prevention of cardiovascular disease, more effectively utilize Heart impact signal and heart vibration signal.
It is the schematic block diagram of a kind of electronic equipment provided in an embodiment of the present invention referring to Fig. 6.This implementation as shown in the figure Example in electronic equipment may include：One or more input equipments 1000, one or more output equipments 2000, one or more A processor 3000 and memory 4000.Above-mentioned processor 3000, input equipment 1000, output equipment 2000 and memory 4000 It is connected by bus 5000.For memory 4000 for storing computer program, the computer program includes program instruction, processing Device 3000 is used to execute the program instruction of the storage of memory 4000.Wherein, input equipment 1000 is used for obtaining in a period of time The heart impact signal data and heart vibration signal data at family, the heart impact signal data and the heart vibration signal data when Between upper synchronize.
Processor 3000 is configured for calling described program instruction execution：Obtain heart impact signal data and described The linkage characteristic parameter of heart vibration signal data, the linkage characteristic parameter is for indicating heart impact signal data and described Heart vibration signal data when/frequency domain on correlative character.
Output equipment 2000 is for exporting the linkage characteristic parameter.
Optionally, the linkage characteristic parameter of the heart impact signal data and the heart vibration signal data includes heart impact The rhythm and pace of moving things coherence parameter of signal and heart vibration signal；
Above-mentioned processor 3000 is specifically used for：
According to the heart impact signal data and the heart vibration signal data, the heart impact signal and the heart are obtained The crosspower spectrum of vibration signal；
According to the heart impact signal data and the heart vibration signal data, the heart impact signal is obtained on frequency domain With the coherence factor of the heart vibration signal；
According to the crosspower spectrum and the coherence factor, the section of the heart impact signal and the heart vibration signal is obtained Restrain coherence parameter.
Optionally, the linkage characteristic parameter of the heart impact signal data and the heart vibration signal data includes heart impact First time domain interval of signal and heart vibration signal；
Above-mentioned processor 3000 is specifically used for：
According to the heart impact signal data and the heart vibration signal data, heart vibration signal peak value corresponding the is obtained One time point and the time between first heart impact signal peak value corresponding second time point after the first time point Interval is used as first time domain interval；
Wherein, the heart impact signal data include at least one heart impact signal peak value, the heart vibration signal data Including at least one heart vibration signal peak value.
Optionally, above-mentioned processor 3000 is additionally operable to, according to the heart impact signal data, obtain heart impact signal peak value Between corresponding third time point and the impact nearest before the third time point and with third time point saturation node Time interval as the second time domain interval, and obtain third time point and first anti-after the third time point Time interval between punching saturation node is as third time domain interval；
Above-mentioned output equipment 2000 is additionally operable to export second time domain interval and the third time domain interval；
Wherein, the heart impact signal data include at least one heart impact signal peak value, at least one impact saturation section Point and at least one recoil are saturated node.
Optionally, above-mentioned processor 3000 is additionally operable to：
According to the heart impact signal data, heart impact signal peak value corresponding 4th time point is obtained；
According to the heart impact signal data, obtain heart impact signal in the time domain before the 4th time point and with institute It states between the impact saturation node of the 4th time point recently and the first recoil saturation node after the 4th time point Blood impact area；
Above-mentioned output equipment 2000 is additionally operable to export the blood impact area.
Optionally, above-mentioned output equipment 2000 is specifically used for sending comprising described to target terminal corresponding with the user The pushed information of linkage characteristic parameter.
Optionally, above-mentioned output equipment 2000 is additionally operable to analyze the linkage characteristic parameter, obtains the linkage Corresponding first analysis result of characteristic parameter；
The prompt message for including first analysis result is sent to target terminal corresponding with the user.
Optionally, if above-mentioned output equipment 2000 is additionally operable to detect the linkage characteristic parameter not in target zone, It analyzes second time domain interval, the third time domain interval and the blood impact area and obtains the second analysis result, and Second analysis result is sent to the corresponding target terminal of the user.
It should be appreciated that in embodiments of the present invention, alleged processor 3000 can be central processing unit (Central Processing Unit, CPU), which can also be other general processors, digital signal processor (Digital Signal Processor, DSP), application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), ready-made programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic Device, discrete gate or transistor logic, discrete hardware components etc..General processor can be microprocessor or this at It can also be any conventional processor etc. to manage device.
Input equipment 1000 may include receiver etc., and output equipment 2000 may include transmitter, display (LCD Deng), loud speaker etc..
The memory 4000 may include read-only memory and random access memory, and provide instruction to processor 3000 And data.The a part of of memory 4000 can also include nonvolatile RAM.For example, memory 4000 may be used also With the information of storage device type.
In the specific implementation, input equipment 1000 described in the embodiment of the present invention, output equipment 2000, processor 3000 The realization method described in signal processing method provided in an embodiment of the present invention is can perform, institute of the embodiment of the present invention is also can perform The realization method of the signal processing apparatus of description, details are not described herein.
A kind of computer readable storage medium is also provided in the embodiment of the present invention, which has Computer program, the computer program include program instruction, which realizes the letter of Fig. 2 or Fig. 4 when being executed by processor Number processing method, detail please refer to the description of Fig. 2 or Fig. 4 embodiments, and details are not described herein.
Above computer readable storage medium storing program for executing can be that signal processing apparatus described in aforementioned any embodiment or electronics are set Standby internal storage unit, for example, electronic equipment hard disk or memory.The computer readable storage medium can also be the electronics The plug-in type hard disk being equipped on the External memory equipment of equipment, such as the electronic equipment, intelligent memory card (Smart Media Card, SMC), secure digital (Secure Digital, SD) card, flash card (Flash Card) etc..Further, the calculating Machine readable storage medium storing program for executing can also both include the electronic equipment internal storage unit and also including External memory equipment.The computer Readable storage medium storing program for executing is used to store other programs and data needed for the computer program and the electronic equipment.The computer can Storage medium is read to can be also used for temporarily storing the data that has exported or will export.
Those of ordinary skill in the art may realize that lists described in conjunction with the examples disclosed in the embodiments of the present disclosure Member and algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware With the interchangeability of software, each exemplary composition and step are generally described according to function in the above description.This A little functions are implemented in hardware or software actually, depend on the specific application and design constraint of technical solution.Specially Industry technical staff can use different methods to achieve the described function each specific application, but this realization is not It is considered as beyond the scope of this invention.
The present invention is method, the flow of system, device (equipment) and computer program product with reference to the embodiment of the present invention Figure and/or block diagram describe.It should be understood that can be realized by computer program instructions every first-class in flowchart and/or the block diagram The combination of flow and/or box in journey and/or box and flowchart and/or the block diagram.These computer programs can be provided Instruct the processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce A raw machine so that the instruction executed by computer or the processor of other programmable data processing devices is generated for real The device for the function of being specified in present one flow of flow chart or one box of multiple flows and/or block diagram or multiple boxes.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works so that instruction generation stored in the computer readable memory includes referring to Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device so that count Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, in computer or The instruction executed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one The step of function of being specified in a box or multiple boxes.
Although in conjunction with specific features and embodiment, invention has been described, it is clear that, do not departing from this hair In the case of bright spirit and scope, it can be carry out various modifications and is combined.Correspondingly, the specification and drawings are only institute The exemplary illustration for the present invention that attached claim is defined, and be considered as covered in the scope of the invention arbitrary and all and repair Change, change, combining or equivalent.Obviously, those skilled in the art various changes and modifications can be made to the invention without It is detached from the spirit and scope of the present invention.If in this way, these modifications and changes of the present invention belong to the claims in the present invention and its Within the scope of equivalent technologies, then the present invention is also intended to include these modifications and variations.

Claims (10)

1. a kind of signal processing method, which is characterized in that including：
Obtain the heart impact signal data and heart vibration signal data of user in a period of time, the heart impact signal data and institute Heart vibration signal data are stated to synchronize in time；
Obtain the linkage characteristic parameter of the heart impact signal data and the heart vibration signal data, the linkage characteristic parameter For indicate the heart impact signal data and the heart vibration signal data when/frequency domain on correlative character；
Export the linkage characteristic parameter.
2. according to the method described in claim 1, it is characterized in that, the linkage characteristic parameter includes heart impact signal and heart shake The rhythm and pace of moving things coherence parameter of dynamic signal；
The linkage characteristic parameter for obtaining the heart impact signal data and the heart vibration signal data, including：
According to the heart impact signal data and the heart vibration signal data, obtains the heart impact signal and shaken with the heart The crosspower spectrum of signal；
According to the heart impact signal data and the heart vibration signal data, the heart impact signal and institute are obtained on frequency domain State the coherence factor of heart vibration signal；
According to the crosspower spectrum and the coherence factor, the rhythm and pace of moving things phase of the heart impact signal and the heart vibration signal is obtained Dryness parameter.
3. according to the method described in claim 1, it is characterized in that, the linkage characteristic parameter includes heart impact signal and heart shake First time domain interval of dynamic signal；
The linkage characteristic parameter for obtaining the heart impact signal data and the heart vibration signal data, including：
According to the heart impact signal data and the heart vibration signal data, the heart vibration signal peak value corresponding is obtained One time point and the time between first heart impact signal peak value corresponding second time point after the first time point Interval is used as first time domain interval；
Wherein, the heart impact signal data include at least one heart impact signal peak value, the heart vibration signal data Including at least one heart vibration signal peak value.
4. according to the method in claim 2 or 3, which is characterized in that the method further includes：
According to the heart impact signal data, heart impact signal peak value corresponding third time point is obtained and in the third time Time interval between the impact saturation node nearest before point and with the third time point is obtained as the second time domain interval The third time point and the first recoil after the third time point are saturated the time interval between node as third Time domain interval；
Export second time domain interval and the third time domain interval；
Wherein, the heart impact signal data include at least one heart impact signal peak value, at least one impact saturation node and At least one recoil is saturated node.
5. according to the method described in claim 4, it is characterized in that, the method, further includes：
According to the heart impact signal data, heart impact signal peak value corresponding 4th time point is obtained；
According to the heart impact signal data, heart impact signal is obtained in the time domain before the 4th time point and with described the Blood between the impact saturation node of four time points recently and the first recoil saturation node after the 4th time point Impact area；
Export the blood impact area.
6. according to the method in claim 2 or 3, which is characterized in that described after the output linkage characteristic parameter Method further includes：
The linkage characteristic parameter is analyzed, corresponding first analysis result of the linkage characteristic parameter is obtained；
The prompt message for including first analysis result is sent to target terminal corresponding with the user.
7. according to the method described in claim 5, it is characterized in that, the method, further includes：
If detecting the linkage characteristic parameter not in target zone, second time domain interval, the third time domain are analyzed Interval and the blood impact area obtain the second analysis result, and second analysis result is sent to the user couple The target terminal answered.
8. a kind of signal processing apparatus, which is characterized in that include for executing as described in claim 1-7 any claims The module of method.
9. a kind of electronic equipment, which is characterized in that the electronic equipment includes：Processor, input equipment, output equipment and storage Device, the processor, input equipment, output equipment and memory are connected with each other, wherein the memory is for storing computer Program, the computer program include program instruction, and the processor is configured for calling described program instruction, executes as weighed Profit requires 1-7 any one of them methods.
10. a kind of computer readable storage medium, which is characterized in that the computer storage media is stored with computer program, The computer program includes program instruction, and described program instruction makes the processor execute such as right when being executed by a processor It is required that 1-7 any one of them methods.
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CN113017613A (en) * 2021-03-03 2021-06-25 四川大学华西医院 Artificial intelligence-based cardiac shock wave signal processing method and computer equipment
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