CN106175739B - Phase measurement and optimization method and system between a kind of pulse R R during sleep - Google Patents
Phase measurement and optimization method and system between a kind of pulse R R during sleep Download PDFInfo
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- CN106175739B CN106175739B CN201610630794.9A CN201610630794A CN106175739B CN 106175739 B CN106175739 B CN 106175739B CN 201610630794 A CN201610630794 A CN 201610630794A CN 106175739 B CN106175739 B CN 106175739B
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/024—Detecting, measuring or recording pulse rate or heart rate
- A61B5/02405—Determining heart rate variability
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- A—HUMAN NECESSITIES
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- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
- A61B5/0826—Detecting or evaluating apnoea events
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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
- A61B5/48—Other medical applications
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- A61B5/4809—Sleep detection, i.e. determining whether a subject is asleep or not
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- A—HUMAN NECESSITIES
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- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
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- A61B5/4812—Detecting sleep stages or cycles
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- A61B5/4818—Sleep apnoea
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7235—Details of waveform analysis
- A61B5/725—Details of waveform analysis using specific filters therefor, e.g. Kalman or adaptive filters
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
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Abstract
The present invention relates to phase measurement and optimization method and system between the pulse R R during a kind of sleep, the sleep quality of testee is detected in real time by the high equipment of untouchable and portable degree and accuracy in detection high method, only need by detecting pulse signal, the extraction of time value between accurate R R is realized with many algorithms, time value carrying out obtaining preliminary R R after screening for the first time pulse peak value by the covariance matching of pulse peak value, secondary investigation is carried out to time value unusual preliminary R R by AR models again, the effect of time value between the existing R R gathered out by PSG is reached, and it disclosure satisfy that user is in the demand of the optimization of phase between progress R R under the daily life styles such as house or travel, and reduce time and money consumption.
Description
Technical field
The present invention relates to it is a kind of be applied to everyday environments under relevant HRV R -- R interval optimisation technique,
The vital signs such as more particularly to a kind of breathing in a manner of untouchable in monitoring sleep, pulse are realized to be optimized to R -- R interval
Sleep during pulse R -- R interval measurement and optimization method and system.
Background technology
According to《Chinese cardiovascular disease reports (2015)》Estimate that there is cardiovascular patient 2.9 hundred million in current China, there is 350 every year
Ten thousand people die from angiocardiopathy.With the improvement of living standards, the quickening of rhythm of life and the arrival of global astogeny society, the heart
The morbidity and mortality of popular name for will more rise, it can be seen that, heart disease has become one of principal disease for threatening the mankind.
Modern medicine study shows that heart can quickly be understood by obtaining the analysis that continuous and accurate R -- R interval carries out HRV
Functional status.
To obtain accurate R -- R interval value, it is recognized that the method for most standard be that the sleep that uses of hospital leads figure (PSG) more,
But PSG is difficult to popularization and application due to reasons such as flow complexity, somewhat expensive, user experience differences.Therefore, research substitute PSG,
And conveniently, the high detection method of accuracy rate provide the analysis for the optimization of R -- R interval and HRV to strong technology branch
Support, has higher practical value.
The method of acquisition R -- R interval substantially has following several at present：
1st, patent document CN104398257A discloses a kind of ecg wave form periodic statistics analysis method, reads given
The ecg wave form in several cycles, differentiate the position of each cycle electrocardio ripple QRS complex and calculate all cycle ecg wave forms
Superposed average figure, so that it is determined that R -- R interval value.Such method needs first to measure electrocardiosignal with PSG, therefore, its stream being related to
The problems such as journey is complex, somewhat expensive, user experience difference, secondly, such method can only do off-line analysis to one piece of data,
Continuous detection in real time can not be accomplished.
2nd, a document of Chinese Marine University discloses a kind of by detecting R ripples so that it is determined that the method for R -- R interval, from
Data are obtained in MIT-BIH ecg signal datas storehouse and the pretreatment such as are filtered to primary signal, then using threshold test
Algorithm detects R ripples, predicts follow-up R -- R interval value.Such method can only also do off-line analysis, can not obtain real-time ECG signal,
Calculating to R -- R interval value can only also rest on theoretical side, poor practicability.
3rd, patent document CN103479349A provides a kind of ecg signal data acquisition and processing method and system, utilizes
R -- R interval processing unit causes the signal bandwidth of R -- R interval to fall in the frequency required by Hilbert transform best amplitude-frequency characteristic
Within bandwidth, and solves the problems such as missing inspection, flase drop by resampling, filtering etc..Such method is to original ECG signal and R-R
Between the calculating of phase excessively intervene, artificial overcorrect, the accuracy for the R -- R interval value being calculated needs to be considered.
In a word, the optimization method of existing R -- R interval value, otherwise need the complicated cumbersome and user experience of dependence extremely low
PSG, the ability examinations investigation under hospital environment, can not be applied to the everyday environments such as family or travel；Can not
Accomplish collection in real time and detection, and the degree of accuracy of the R -- R interval value calculated is not also high.
The content of the invention
The invention aims to solve the shortcomings that above-mentioned prior art and deficiency, there is provided the pulse during a kind of sleep
R -- R interval measures and optimization method and system, passes through the high method of the high equipment of untouchable and portable degree and accuracy in detection
The sleep quality of testee is detected in real time, and only needed by detecting pulse signal, it is accurate to be realized with many algorithms
R -- R interval value extraction, pulse peak value is carried out by the covariance matching of pulse peak value to obtain preliminary R-R after screening for the first time
Between time value, then secondary investigation is carried out to unusual preliminary R -- R interval value by AR models, has reached existing and gathered out by PSG
R -- R interval value effect, and disclosure satisfy that user is at home or carried out under the daily life style such as travel the excellent of R -- R interval
The demand of change, and reduce time and money consumption.
To achieve these goals, the technical solution adopted by the present invention is as follows：
First, the invention provides a kind of measurement of the pulse R -- R interval during sleep and optimization method, it includes following step
Suddenly：
Step 1：Obtain and calculate accurate pulse frequency, position pulse peak point, accurately obtain pulse wave；
Step 2：Preliminary R -- R interval value is calculated according to pulse wave；
Step 3：A Time Intervals are set, according to the preliminary R -- R interval value in the Time Intervals, are established for when representing this
Between between effective peak information in the phase AR models；
Step 4：N is calculated according to the preliminary R -- R interval value of the top n point in the Time Intervals in the AR models
The R -- R interval value of+1 point；
Step 5：Calculate the R -- R interval value for the N+1 point being calculated by the AR models and the Time Intervals
Difference between the actual R -- R interval value of interior the N+1 point；Judge whether the difference belongs in a threshold range, if it is,
Record the actual R -- R interval value of the N+1 point in the Time Intervals；Otherwise, write off detection, abandons the Time Intervals
The actual R -- R interval value of interior the N+1 point；
Step 6：Constant duration extract successively with the multiple Time Intervals of Time Intervals duration identical, repeat described in
Step 3~5；Until all Time Intervals are disposed, the optimization to R -- R interval during sleep is realized.
As a further improvement on the present invention, in the step 1, following steps are specifically included：
Step 11：Collection sleep signal in real time；
Step 12：Sleep signal is handled to obtain pulse frequency；
Step 13：Carry out shape filtering, peakvalue's checking and covariance matching processing successively to the pulse frequency, standard is calculated
True pulse rate data, and pulse wave is generated according to the pulse rate data.
As a further improvement on the present invention, the step 11 is to be realized by piezoelectric transducer to the real-time of sleep signal
Collection, the piezoelectric transducer is positioned over testee's pillow bottom surface during collection.
As a further improvement on the present invention, the type for the sleep signal that piezoelectric transducer gathers is mould in the step 11
Intend signal type, and the analog signal is sent to an A/D modular converters, data signal type is converted into by A/D modular converters
Sleep signal.
As a further improvement on the present invention, in the step 2, following steps are specifically included：
Step 21：One section of pulse signal of pulse wave is extracted, and a pulse wave arteries and veins is established in this section of pulse signal
Punching；
Step 22：Pulse wave pulse is moved with this section of pulse signal and matched, obtains one group of covariance matching
Correlation function；
Step 23：Established in the correlation function cycle be 6s moving window, and in the correlation function with
1s is to move the moving window in the cycle, and choose moving window it is mobile every time after greatest measure point in it, and by all choosings
The greatest measure point taken out is as the pulse wave pulse in pulse signal；
Step 24：Do not possess the characteristic of mutation in a short time according to heart rate, to the pulse wave artery formed in step 23
The pulse cycle of punching is judged, removes abnormal peak value, obtains effective peak data；
Step 25：By obtained effective peak data markers it is pulse peak point in correlation function, and is calculated just
Walk R -- R interval value.
As a further improvement on the present invention, in the step 3,6s Time Intervals are set, according in the Time Intervals
4~6 preliminary R -- R interval value Xi, establish the AR models for representing the effective peak information in the Time Intervals, wherein i
Value be integer between 1~6, including 1 and 6.
In the step 4, the AR models are according to the preliminary R -- R interval value of the 1st~3 point in the Time Intervals
X1、X2And X3Estimation obtains the R -- R interval value X of the 4th point4, X4=a × X3+a2×X2+a3×X1；Wherein a value is equation a+a2
+a3=1 real solution.
In the step 5, following steps are specifically included：
Step 51：Calculate the R -- R interval value X for the 4th point being calculated by the AR models4With the Time Intervals
The actual R -- R interval value Y of interior 4th point4Between difference；
Step 52：Judge the absolute value of the difference | Y4-X4| whether in X4Within × 20%, if it is, when recording described
Between between in the phase the 4th point actual R -- R interval value Y4；Otherwise, write off detection, abandons the 4th point in the Time Intervals
Actual R -- R interval value Y4。
As a further improvement on the present invention, in the step 6, after the 6s Time Intervals in the step 3, using 1s as
Time interval, extract multiple 6s Time Intervals, repeating said steps 3~5 successively along time shaft direction；Until institute sometimes
Between between the phase be disposed, realize the optimization to R -- R interval during sleep.
To reach another object of the present invention, present invention also offers a kind of pulse R -- R interval with during above-mentioned sleep
The measurement of pulse R -- R interval and optimization system, the system during being slept corresponding to measurement and optimization method include what is be sequentially connected
Piezoelectric transducer, A/D modular converters and processor；
The piezoelectric transducer is used to gather the sleep analog signal during testee sleeps in real time, and is sent to the A/
D modular converters；
The A/D modular converters are used to the sleep analog signal being converted into data signal of sleeping, and are sent to described
Processor；
The processor is used to the sleep data signal is handled to obtain pulse frequency waveform, and is entered according to pulse frequency waveform
Row processing obtains preliminary R -- R interval value, and carries out dissimilarity to preliminary R -- R interval value and investigate the R -- R interval value after being optimized, real
Now to the optimization of R -- R interval during sleep.
Pass through above-mentioned technical proposal, invention achieves technique effect beneficial below：
The present invention passes through sleep of the high method of the high equipment of untouchable and portable degree and accuracy in detection to testee
Situation is detected in real time, and is only needed by detecting pulse signal, and carrying for accurate R -- R interval value is realized with many algorithms
Take, pulse peak value is carried out by the covariance matching of pulse peak value to obtain preliminary R -- R interval value after screening for the first time, then pass through AR
Model carries out secondary investigation to unusual preliminary R -- R interval value, has reached the effect of the existing R -- R interval value gathered out by PSG
Fruit, accuracy is high, and disclosure satisfy that user is under the daily life styles such as house or travel the need for the optimization for carrying out R -- R interval
Ask, and reduce time and money consumption.
In order to more fully understand and implement, the invention will now be described in detail with reference to the accompanying drawings.
Brief description of the drawings
Fig. 1 is the outline flowchart of the measurement of pulse R -- R interval and optimization method during the present invention sleeps；
Pulse R -- R interval during Fig. 2 is present invention sleep measures and optimized the structure chart of system；
Fig. 3 be the sleep in Fig. 2 during pulse R -- R interval measurement and optimization system further improve after structure chart.
Embodiment
Referring to Fig. 1, the invention provides during a kind of sleep pulse R -- R interval measurement and optimization method,
First, the invention provides a kind of measurement of the pulse R -- R interval during sleep and optimization method, it includes following step
Suddenly：
Step 1：Obtain and calculate accurate pulse frequency, position pulse peak point, accurately obtain pulse wave；Specifically,
The step 1 comprises the following steps：
Step 11：Collection sleep signal in real time；It is to be realized by piezoelectric transducer to sleep signal in the step 11
Collection in real time, the piezoelectric transducer is positioned over testee's pillow bottom surface during collection；And the sleep signal of piezoelectric transducer collection
Type is analog signal types, and the analog signal is sent to an A/D modular converters by it, and numeral is converted into by A/D modular converters
The sleep signal of signal type.
Step 12：Sleep signal is handled to obtain pulse frequency；Specifically, step 12 is the sleep signal to numeric type
Handled to obtain pulse frequency；
Step 13：Carry out shape filtering, peakvalue's checking and covariance matching processing successively to the pulse frequency, standard is calculated
True pulse rate data, and pulse wave is generated according to the pulse rate data.
Step 2：Preliminary R -- R interval value is calculated according to pulse wave；Specifically, the step 2 comprises the following steps：
Step 21：One section of pulse signal of pulse wave is extracted, and a pulse wave arteries and veins is established in this section of pulse signal
Punching；
Step 22：Pulse wave pulse is moved with this section of pulse signal and matched, obtains one group of covariance matching
Correlation function；
Step 23：Established in the correlation function cycle be 6s moving window, and in the correlation function with
1s is to move the moving window in the cycle, and choose moving window it is mobile every time after greatest measure point in it, and by all choosings
The greatest measure point taken out is as the pulse wave pulse in pulse signal；
Step 24：Do not possess the characteristic of mutation in a short time according to heart rate, to the pulse wave artery formed in step 23
The pulse cycle of punching is judged, removes abnormal peak value, obtains effective peak data；In the present embodiment, the abnormal peak
The selection of value is on the basis of its front and rear 2 points, if it is big with front and rear 2 points of gap, mutation is big, then it is assumed that the peak point is different
Often, and excluded.
Step 25：By obtained effective peak data markers it is pulse peak point in correlation function, and is calculated just
Walk R -- R interval value.
Step 3：A Time Intervals are set, according to the preliminary R -- R interval value in the Time Intervals, are established for when representing this
Between between effective peak information in the phase AR models；In the present embodiment, in the step 3,6s Time Intervals are set, according to
4~6 preliminary R -- R interval value Xi in the Time Intervals, are established for representing the effective peak information in the Time Intervals
The value of AR models, wherein i is the integer between 1~6, including 1 and 6.
Step 4：N is calculated according to the preliminary R -- R interval value of the top n point in the Time Intervals in the AR models
The R -- R interval value of+1 point；In the present embodiment, in the step 4, the AR models are according to the 1st in the Time Intervals
The preliminary R -- R interval value X of~3 points1、X2And X3Estimation obtains the R -- R interval value X of the 4th point4, X4=a × X3+a2×X2+a3
×X1；Wherein a value is equation a+a2+a3=1 real solution.
Step 5：Calculate the R -- R interval value for the N+1 point being calculated by the AR models and the Time Intervals
Difference between the actual R -- R interval value of interior the N+1 point；Judge whether the difference belongs in a threshold range, if it is,
Record the actual R -- R interval value of the N+1 point in the Time Intervals；Otherwise, write off detection, abandons the Time Intervals
The actual R -- R interval value of interior the N+1 point；In the present embodiment, in the step 5, following steps are specifically included：
Step 51：Calculate the R -- R interval value X for the 4th point being calculated by the AR models4With the Time Intervals
The actual R -- R interval value Y of interior 4th point4Between difference；
Step 52：Judge the absolute value of the difference | Y4-X4Whether in X4Within × 20%, if it is, when recording described
Between between in the phase the 4th point actual R -- R interval value Y4；Otherwise, write off detection, abandons the 4th point in the Time Intervals
Actual R -- R interval value Y4。
Step 6：Constant duration extract successively with the multiple Time Intervals of Time Intervals duration identical, repeat described in
Step 3~5；Until all Time Intervals are disposed, the optimization to R -- R interval during sleep is realized.In the present embodiment, institute
State in step 6, after the 6s Time Intervals in the step 3, using 1s as time interval, extracted successively along time shaft direction
Multiple 6s Time Intervals, repeating said steps 3~5；Until all Time Intervals are disposed, realize to R-R during sleep
Between the phase optimization.
Referring to Fig. 2, in addition, present invention also offers a kind of pulse R -- R interval measurement with during above-mentioned sleep and excellent
The measurement of pulse R -- R interval and optimization system during being slept corresponding to change method, the system include the piezoelectric sensing being sequentially connected
Device 10, A/D modular converters 20 and processor 30.
The piezoelectric transducer 10 is used to gather the sleep analog signal during testee sleeps in real time, and is sent to described
A/D modular converters 20.
The A/D modular converters 20 are used to the sleep analog signal being converted into data signal of sleeping, and are sent to institute
State processor 30.
The processor 30 is used to the sleep data signal is handled to obtain pulse frequency waveform, and according to pulse frequency waveform
Handled to obtain preliminary R -- R interval value, and dissimilarity carried out to preliminary R -- R interval value and investigates the R -- R interval value after being optimized,
Realize the optimization to R -- R interval during sleep.
Referring to Fig. 3, to avoid piezoelectric transducer 10 from being walked phenomenon by such environmental effects, while extend pressure
The service life of electric transducer 10, as a kind of more excellent technical scheme, the judgement system of apnea during present invention sleep
Also include a sensor installing plate 40；The piezoelectric transducer 10 is embedded the middle part for being installed on the sensor installing plate 40, and
Its test side, which leaks outside, is arranged at the surface of the sensor installing plate 40, and with the flush of sensor installing plate 40.At this
In embodiment, the length and width of sensor installing plate 40 are preferably sized in the same size or close with the length and width of the pillow of testee.
To obtain the small sleep data signal of external disturbance, as a kind of more excellent technical scheme, the A/D modular converters
20 filter circuit, amplifying circuit and A/D change-over circuits including being sequentially connected electrically and being integrated on same pcb board.The filtering
Circuit electrically connects with the piezoelectric transducer 10, and the analog signal to being transmitted by piezoelectric transducer 10 be filtered processing after it is defeated
Enter to amplifying circuit；The amplifying circuit is amplified to the analog signal after filtered processing, and is sent to the A/D conversions
Circuit；The A/D change-over circuits are connected by the serial ports on pcb board with processor 30, its will successively after filtering with amplification
The analog signal of reason is converted into data signal, and data signal is sent into processor 30 by serial ports, by processor 30 to institute
Data signal is stated to be analyzed and processed.
When needing to detect pulse signal, need what is used when monoblock sensor installing plate 40 is placed on into testee's sleep
The bottom surface of pillow, or be nested into the pillow cover of pillow, and pillow is pressurized together；And A/D modular converters 20 can be placed on bedside
Or other convenient places placed.Pulse signal can be detected by the system when testee sleeps, processor 30 can be
Continuous processing data during the sleep of testee, subsequent analysis, processing and the work of optimization are completed, is realized to R-R during sleep
Between the phase optimization.Specifically, the system is realized and the course of work of the optimization of R -- R interval during sleep and operation principle can be combined
The measurement of pulse R -- R interval and optimization method during the sleep of the present invention are understood, therefore will not be repeated here.
In other variant embodiments, the processor 30 could alternatively be computer, mobile phone, tablet personal computer, wrist-watch etc.
Other intelligent terminals.
Relative to prior art, the measurement of pulse R -- R interval and optimization method and system during present invention sleep pass through non-
The contact and high method of the high equipment of portable degree and accuracy in detection is detected in real time to the sleep quality of testee, and only
Need by detecting pulse signal, the extraction of accurate R -- R interval value is realized with many algorithms, passes through the association side of pulse peak value
Difference matching carries out obtaining preliminary R -- R interval value after screening for the first time to pulse peak value, then by AR models unusual preliminary R-R
Time value carries out secondary investigation, has reached the effect of the existing R -- R interval value gathered out by PSG, and disclosure satisfy that user is in
The demand of the optimization of R -- R interval is carried out under the daily life style such as house or travel, and reduces time and money consumption.
The invention is not limited in above-mentioned embodiment, if the various changes or deformation to the present invention do not depart from the present invention
Spirit and scope, if these changes and deformation belong within the scope of the claim and equivalent technologies of the present invention, then this hair
It is bright to be also intended to comprising these changes and deformation.
Claims (10)
1. the measurement of pulse R -- R interval and optimization method during a kind of sleep, it is characterised in that：Comprise the following steps：
Step 1：Obtain and calculate accurate pulse frequency, position pulse peak point, accurately obtain pulse wave；
Step 2：Preliminary R -- R interval value is calculated according to pulse wave；
Step 3：A Time Intervals are set, according to the preliminary R -- R interval value in the Time Intervals, are established for representing between the time
The AR models of effective peak information in phase；
Step 4：The AR models are calculated N+1 according to the preliminary R -- R interval value of the top n point in the Time Intervals
The R -- R interval value of point；
Step 5：Calculate the R -- R interval value for the N+1 point being calculated by the AR models and N in the Time Intervals
Difference between the actual R -- R interval value of+1 point；Judge whether the difference belongs in a threshold range, if it is, record
The actual R -- R interval value of the N+1 point in the Time Intervals；Otherwise, write off detection, abandons in the Time Intervals
The actual R -- R interval value of N+1 point；
Step 6：Constant duration extracts and the multiple Time Intervals of Time Intervals duration identical, repeating said steps successively
3~5；Until all Time Intervals are disposed, the optimization to R -- R interval during sleep is realized.
2. the measurement of pulse R -- R interval and optimization method during sleep according to claim 1, it is characterised in that：It is described
In step 1, following steps are specifically included：
Step 11：Collection sleep signal in real time；
Step 12：Sleep signal is handled to obtain pulse frequency；
Step 13：Carry out shape filtering, peakvalue's checking and covariance matching processing successively to the pulse frequency, be calculated accurately
Pulse rate data, and pulse wave is generated according to the pulse rate data.
3. the measurement of pulse R -- R interval and optimization method during sleep according to claim 2, it is characterised in that：It is described
Step 11 is to realize real-time collection to sleep signal by piezoelectric transducer, and the piezoelectric transducer is positioned over testee during collection
Pillow bottom surface.
4. the measurement of pulse R -- R interval and optimization method during sleep according to claim 3, it is characterised in that：It is described
The type for the sleep signal that piezoelectric transducer gathers is analog signal types in step 11, and the analog signal is sent into an A/
D modular converters, the sleep signal of data signal type is converted into by A/D modular converters.
5. the measurement of pulse R -- R interval and optimization method during sleep according to claim 1, it is characterised in that：It is described
In step 2, following steps are specifically included：
Step 21：One section of pulse signal of pulse wave is extracted, and a pulse wave pulse is established in this section of pulse signal；
Step 22：Pulse wave pulse is moved with this section of pulse signal and matched, obtains the correlation of one group of covariance matching
Function；
Step 23：Established in the correlation function cycle be 6s moving window, and in the correlation function using 1s as
Cycle moves the moving window, and chooses the greatest measure point after moving window moves every time in it, and is selected all
The greatest measure point come is as the pulse wave pulse in pulse signal；
Step 24：Do not possess the characteristic of mutation in a short time according to heart rate, to the pulse wave pulse that is formed in step 23
Pulse cycle is judged, removes abnormal peak value, obtains effective peak data；
Step 25：By obtained effective peak data markers it is pulse peak point in correlation function, and preliminary R-R is calculated
Between time value.
6. the measurement of pulse R -- R interval and optimization method during sleep according to claim 1, it is characterised in that：It is described
In step 3,6s Time Intervals are set, according to 4~6 preliminary R -- R interval value Xi in the Time Intervals, are established for representing
The AR models of effective peak information in the Time Intervals, wherein i value are the integer between 1~6, including 1 and 6.
7. the measurement of pulse R -- R interval and optimization method during sleep according to claim 6, it is characterised in that：It is described
In step 4, the AR models are according to the preliminary R -- R interval value X of the 1st~3 point in the Time Intervals1、X2And X3Estimate
To the R -- R interval value X of the 4th point4, X4=a × X3+a2×X2+a3×X1；Wherein a value is equation a+a2+a3=1 real number
Solution.
8. the measurement of pulse R -- R interval and optimization method during sleep according to claim 7, it is characterised in that：It is described
In step 5, following steps are specifically included：
Step 51：Calculate the R -- R interval value X for the 4th point being calculated by the AR models4With the 4th in the Time Intervals
The actual R -- R interval value Y of individual point4Between difference；
Step 52：Judge the absolute value of the difference | Y4-X4| whether in X4Within × 20%, if it is, between recording the time
The actual R -- R interval value Y of 4th point in phase4；Otherwise, write off detection, abandons the reality of the 4th point in the Time Intervals
Border R -- R interval value Y4。
9. the measurement of pulse R -- R interval and optimization method during sleep according to claim 8, it is characterised in that：It is described
In step 6, after the 6s Time Intervals in the step 3, using 1s as time interval, extracted successively along time shaft direction more
Individual 6s Time Intervals, repeating said steps 3~5；Until all Time Intervals are disposed, realize R-R during sleep
The optimization of phase.
10. the measurement of pulse R -- R interval and optimization system during a kind of sleep, it is characterised in that：Including the piezoelectricity being sequentially connected
Sensor, A/D modular converters and processor；
The piezoelectric transducer is used to gather the sleep analog signal during testee sleeps in real time, and is sent to the A/D and turns
Change the mold block；
The A/D modular converters are used to the sleep analog signal being converted into data signal of sleeping, and are sent to the processing
Device；The processor is used to be handled to obtain pulse frequency waveform to the sleep data signal, and according to pulse frequency waveform at
Reason obtains preliminary R -- R interval value, and dissimilarity is carried out to preliminary R -- R interval value and investigates the R -- R interval value after being optimized, realization pair
The optimization of R -- R interval during sleep；And during the processor is used for the sleep that perform claim is required described in 1~9 any one
Pulse R -- R interval measures and optimization method.
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