CN105249925B - A kind of traditional Chinese medical pulse manifestation collecting device and noise reduction system and noise-reduction method - Google Patents
A kind of traditional Chinese medical pulse manifestation collecting device and noise reduction system and noise-reduction method Download PDFInfo
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- CN105249925B CN105249925B CN201510622605.9A CN201510622605A CN105249925B CN 105249925 B CN105249925 B CN 105249925B CN 201510622605 A CN201510622605 A CN 201510622605A CN 105249925 B CN105249925 B CN 105249925B
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Abstract
The invention belongs to Medical Instruments technical fields, and in particular to a kind of traditional Chinese medical pulse manifestation collecting device, including：Sensor array, multi-channel signal conditioning circuit, Multi-path synchronous A/D circuits and microcontroller, wherein sensor array includes pulse transducer and noise transducer, and noise transducer is for acquiring the vibration noise data brought by body；Multi-channel signal conditioning circuit is for being filtered and amplifying to the signal that each sensor acquires；Multi-path synchronous A/D circuits are used to the signal through multi-channel signal conditioning processing of circuit in real time, synchronously acquire, and convert thereof into digital signal；Microcontroller is used to transformed digital signal being sent to intelligent terminal.The invention also provides a kind of noise reduction system and its noise-reduction methods.The present invention is modified pulse transducer data using noise transducer data, can effectively reduce interference of the vibration noise to traditional Chinese medicine pulse electro pulsograph, to improve the repeatability and accuracy of electropulsograph diagnosis.
Description
Technical field
The invention belongs to Medical Instruments technical field, more particularly to a kind of traditional Chinese medical pulse manifestation collecting device and noise reduction system and drop
Method for de-noising.
Background technology
Traditional Chinese medicine pulse electro pulsograph is theoretical using pulse wave spectrum, the pulse at " cun,guan,chi " in sensor acquisition user's wrist
The pressure signal of point, is analyzed after pressure signal is quantified, it is final realize distinguish user's pulse condition feature, auxiliary diagnosis and
User health management.
The research of domestic traditional Chinese medicine pulse electro pulsograph has more than 30 years history, pulse analysis theory first one-step forming.However, making
For medical instrument, higher requirement has not yet been reached in repeatability and accuracy in traditional Chinese medicine pulse electro pulsograph.One of them important original
Because being that pulse signal belongs to small-signal, therefore, if the sensitivity of sensor is low, the pulse letter of better quality can not be collected
Number；If the high sensitivity of sensor, it is easy by external interference, causing signal quality to reduce influences pulse analysis.
The type of external interference includes mainly：1. the vibration noise that measured's body transmits；2. the vibration of ambient enviroment is made an uproar
Sound；3. electromagnetic interference.In this three noise like, electromagnetic interference can be resolved by the shielding on circuit.But other two kinds
Noise is but always inevitable.Measured's body mild action breathes or speaks, and may all bring larger vibration noise.
Automobile, subway of tester's surrounding enviroment etc. drive the vibration on floor that may also introduce noise.This vibration noise is difficult to pass through
Circuit or structure are inhibited.
Invention content
In order to solve the sensor in traditional Chinese medicine pulse electro pulsograph easily by external interference, so as to cause the repeatability of traditional Chinese medicine pulse electro pulsograph
The problem low with accuracy, the present invention propose a kind of traditional Chinese medical pulse manifestation collecting device and noise reduction system and noise-reduction method.
A kind of traditional Chinese medical pulse manifestation collecting device proposed by the present invention, the device include：Sensor array, multi-channel signal conditioning electricity
Road, Multi-path synchronous A/D circuits and microcontroller, wherein sensor array includes pulse transducer and noise transducer, pulse sensing
Device is shaken for acquiring by what body was brought into for acquiring " very little " of wrist artery, the data of "Off", " ruler " pulse point, noise transducer
Moving noise data；Multi-channel signal conditioning circuit is for being filtered and amplifying to the signal that each sensor acquires；Multi-path synchronous A/D
Circuit is used to the signal through multi-channel signal conditioning processing of circuit in real time, synchronously acquire, and converts thereof into digital letter
Number；Microcontroller, which is used to transformed digital signal being sent to intelligent terminal, carries out Digital Signal Processing and pulse condition identification.
The invention also provides a kind of system that the data to traditional Chinese medical pulse manifestation collecting device acquisition carry out noise reduction, the system packets
It includes：Traditional Chinese medical pulse manifestation collecting device and intelligent terminal, wherein traditional Chinese medical pulse manifestation collecting device includes sensor array, the sensor array
Row include pulse transducer and noise transducer；
The collected data of each sensor in sensor array are sent to intelligent terminal by traditional Chinese medical pulse manifestation collecting device；Intelligence
Terminal judges that the sensing data received belongs to pulse transducer or noise transducer, and it is accordingly divided into pulse biography
Sensor data and noise transducer data；Intelligent terminal Analyze noise sensing data, judges whether noise power reaches certain
Threshold value prompt user's vibration noise excessive if noise power reaches certain threshold value, then resurveyed by sensor.
Further, if noise power does not reach certain threshold value, intelligent terminal is using noise transducer data to arteries and veins
Sensing data of fighting is modified.
The invention also provides the system that another kind carries out noise reduction to the data that traditional Chinese medical pulse manifestation collecting device acquires, the systems
Including：Traditional Chinese medical pulse manifestation collecting device and intelligent terminal, wherein traditional Chinese medical pulse manifestation collecting device includes sensor array, the sensor
Array includes pulse transducer and noise transducer；
The collected data of each sensor in sensor array are sent to intelligent terminal by traditional Chinese medical pulse manifestation collecting device；Intelligence
Terminal judges that the sensing data received belongs to pulse transducer or noise transducer, and it is accordingly divided into pulse biography
Sensor data and noise transducer data；Intelligent terminal is modified pulse transducer data using noise transducer data.
Further, which further includes multi-channel signal conditioning circuit, Multi-path synchronous A/D circuits and list
Piece machine；Wherein, multi-channel signal conditioning circuit is for being filtered and amplifying to the signal that each sensor acquires；Multi-path synchronous A/D
Circuit is used to the signal through multi-channel signal conditioning processing of circuit in real time, synchronously acquire, and converts thereof into digital letter
Number；Microcontroller, which is used to transformed digital signal being sent to intelligent terminal, carries out Digital Signal Processing and pulse condition identification.
The present invention also proposes that a kind of method that the data acquired to traditional Chinese medical pulse manifestation collecting device carry out noise reduction, Chinese medicine pulse are adopted
Acquisition means include pulse transducer and noise transducer, which includes：
Step S1：The collected data of each sensor in sensor array are sent to intelligent end by traditional Chinese medical pulse manifestation collecting device
End；
Step S2：Intelligent terminal judges that the sensing data received belongs to pulse transducer or noise transducer,
And it is accordingly divided into pulse transducer data and noise transducer data；
Step S3：Intelligent terminal Analyze noise sensing data, judges whether noise power reaches certain threshold value, if making an uproar
Acoustical power reaches certain threshold value, then prompts user's vibration noise excessive, is then return to step S1 and restarts.
Further, in step S3, if noise power does not reach certain threshold value, intelligent terminal is passed using noise
Sensor data are modified pulse transducer data.
The invention also provides the method that another kind carries out noise reduction to the data that traditional Chinese medical pulse manifestation collecting device acquires, Traditional Chinese medicinal wrists
As harvester includes pulse transducer and noise transducer, which includes：
Step S1：The collected data of each sensor in sensor array are sent to intelligent end by traditional Chinese medical pulse manifestation collecting device
End；
Step S2：Intelligent terminal judges that the sensing data received belongs to pulse transducer or noise transducer,
And it is accordingly divided into pulse transducer data and noise transducer data；
Step S3：Intelligent terminal is modified pulse transducer data using noise transducer data.
Further, adaptive filter method or the direct subtractive method of frequency spectrum can be used in the modified method.
Further, the side for judging the sensing data received and belonging to pulse transducer or noise transducer
Method is：
First, frequency domain conversion is carried out to all the sensors data；
Secondly, spectrum analysis is carried out to transformed data；
Later, according to pulse spectrum signature, pulse transducer and noise transducer are distinguished；
Alternatively, the method for judging the sensing data received and belonging to pulse transducer or noise transducer
For：
First, cross correlation process is carried out to different sensors data；
Secondly, obtained cross correlation results are analyzed；
Then, judge the similar sensor of signal；
Finally, sensor type is judged in conjunction with sensing station.
Beneficial effects of the present invention：
1. the present invention, to capture noise, can detect the intensity of vibration noise exclusively with noise transducer, into
Row early warning prompts the proper use of equipment of user.
2. the present invention realizes noise reduction algorithm using multiple sensors, the repeatability and accuracy of traditional Chinese medicine pulse electro pulsograph are improved.
Description of the drawings
Fig. 1 is the position view of the pressure sensor of the traditional Chinese medical pulse manifestation collecting device of the embodiment of the present invention 1.
Fig. 2 is the circuit structure diagram of the traditional Chinese medical pulse manifestation collecting device of the present invention.
Fig. 3 is the pre-treatment step flow chart of the present invention.
Fig. 4 is the model schematic of the adaptive filter algorithm of the present invention.
Fig. 5 is the implementation steps flow chart of the adaptive filter algorithm of the present invention.
Fig. 6 is the position view of the pressure sensor of the traditional Chinese medical pulse manifestation collecting device of the embodiment of the present invention 2.
Fig. 7 is the step flow chart for the first way that the present invention judges sensor type.
Fig. 8 is the step flow chart for the second way that the present invention judges sensor type.
Specific implementation mode
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Attached drawing, the present invention is described in more detail.But those skilled in the art know, the invention is not limited in attached drawings and following reality
Apply example.
A kind of traditional Chinese medical pulse manifestation collecting device provided by the invention and corresponding noise reduction system and noise-reduction method, can effectively drop
Interference of the low-vibration noise to traditional Chinese medicine pulse electro pulsograph, to improve the repeatability and accuracy of electropulsograph diagnosis.The drop of the present invention
Method for de-noising and system are suitable for the traditional Chinese medicine pulse electro pulsograph of any structure or form, it is not limited to Wrist belt-type, probe pen formula, wristband type universal serial,
The structure or form of hand type.
Embodiment 1：
Traditional Chinese medical pulse manifestation collecting device includes array of pressure sensors and internal circuit.The position of pressure sensor such as Fig. 1 institutes
Show.Pressure sensor array element 101, pressure sensor array element 102 and pressure sensor array element 103 therein correspond to human body hand respectively
" very little ", "Off", " ruler " pulse point arrangement at wrist, the pressure signal for acquiring at human body wrist " cun,guan,chi " pulse point, this
Class sensor can be referred to as pulse transducer；Pressure sensor array element 104 can be placed in wrist near pulse transducer, but
It will not be pressed in arterial vascular position, for acquiring the vibration noise brought by body, this kind of sensor can be referred to as noise
Sensor.In order to avoid traditional Chinese medical pulse manifestation collecting device when in use each pulse transducer array element accurately corresponding " very little ", "Off",
Error caused by the pulse point of " ruler ", pulse transducer array element can also use pulse transducer array.
The structure of traditional Chinese medical pulse manifestation collecting device internal circuit as shown in Fig. 2, the circuit 204 in addition to including that pressure above-mentioned passes
The array element 101,102,103 and 104 of sensor array further includes multi-channel signal conditioning circuit 201,202 and of Multi-path synchronous A/D circuits
Microcontroller 203.Multi-channel signal conditioning circuit 201 is responsible for that the signal that array of pressure sensors acquires is filtered and is amplified.It is more
Road synchronizes analog signal of the A/D circuits 202 in real time, synchronously acquiring all pressure sensors, and converts thereof into number
Signal.Microcontroller 203 is used to store and pass through any types interface form such as bluetooth, WIFI, USB by transformed digital signal
It is transmitted to intelligent terminal, such as computer, mobile phone, tablet, Digital Signal Processing is carried out by the powerful operational capability of intelligent terminal
With the related operation of pulse condition identification, final realize distinguishes user's pulse condition feature, auxiliary diagnosis and user health management.
After intelligent terminal receives the collected signal of array of pressure sensors, before carrying out pulse analysis, use
Noise-reduction method pre-processes data, to improve the accuracy of pulse analysis result.The pretreated step as shown in figure 3,
It is as follows：
Step 301：After intelligent terminal receives the data of all pressure sensor acquisitions, it is stored in local；
Step 302：Intelligent terminal extracts all pressure sensor datas, judges that pressure sensor is to belong to pulse transducer
Or noise transducer, and its data is accordingly divided into pulse transducer data and noise transducer data, thus by pulse
Sensing data and noise transducer data separating；
Step 305：Intelligent terminal all utilizes noise transducer data to arteries and veins before handling each pulse transducer data
Sensing data of fighting does adaptive-filtering or the processing of frequency domain spectrum subtraction, to the noise signal adulterated in original pulse signal into
Row inhibits；
Step 306：The pulse transducer data after noise reduction are exported, pretreatment is completed.
In order to further improve the accuracy of pulse analysis result, further include between step 302 and step 305：
Step 303：Intelligent terminal elder generation Analyze noise sensing data, calculates the power spectrum of noise, judges that noise power is
It is no to reach certain threshold value, if so, going to step 304；If it is not, then jumping to step 305；
Step 304：Intelligent terminal prompts user's vibration noise excessive, and user is asked to keep quite or change a quiet environment,
Then it gos to step 301, re-starts data acquisition.
Furthermore it is also possible to be pre-processed to data using following noise-reduction method：
Step 31：After intelligent terminal receives the data of all pressure sensor acquisitions, it is stored in local；
Step 32：Intelligent terminal extracts all pressure sensor datas, judges that pressure sensor is to belong to pulse transducer
Or noise transducer, and its data is accordingly divided into pulse transducer data and noise transducer data, thus by pulse
Sensing data and noise transducer data separating；
Step 33：Intelligent terminal elder generation Analyze noise sensing data, calculates the power spectrum of noise, whether judges noise power
Reach certain threshold value, if so, prompt user's vibration noise is excessive, asks user to keep quite or change a quiet environment, so
After go to step 31, re-start data acquisition.
Wherein, in step 305 preferred adaptive filter algorithm model as shown in figure 4, with reference to the model to from
Adaptive filtering algorithm is described.
If the input signal of pulse transducer is d (k), d (k)=s (k)+n (k), wherein s (k) is pulse wave signal, n
(k) it is the noise signal of pulse transducer.
If the input signal of noise transducer is X (k).
If the output signal of filter is y (k), y (k) meets following equation：
In formula, k is time series, and N indicates filter order, WT(k) filter weight coefficient, w are indicatediIndicate that the i-th rank filters
Device coefficient, x (k-i) indicate that list entries completes convolutional calculation, and X [x (k), x (k-1) ..., x (k-N+1)] indicates input arrow
Amount, W [w0(k),w1(k),...,wN-1(k)]TIndicate filter weight coefficient vector.
Error signal is e (k)=d (k)-y (k)
The update estimated value for calculating filter weight coefficient is+2 μ e (k) X (k) of W (k+1)=W (k), wherein μ be step-length because
Son, what it is dependent on selection is fixed step size or variable step.
Error in judgement signal whether reach stable state decision rule include minimum mean square error criterion and criterion of least squares with
And the deformation based on both criterion.Those skilled in the art are also an option that other decision rules.
Minimum mean square error criterion：E[e2(n)] it minimizes, i.e., the square statistic average value of error minimizes.
Criterion of least squares：It minimizes, i.e., the quadratic sum of error is minimum.
The implementation steps of adaptive filter algorithm are as shown in Figure 5.
Step 1：Select filter order N；
Step 2：Filter weight coefficient W (0) and step factor are initialized, the initial value of W (0) is 0, step factor initial value
It is 1；
Step 3：According to the model of adaptive filter algorithm, error letter is calculated according to filter weight coefficient and input signal
Number；
Step 4：Judge whether the error signal has reached stable state according to decision rule, if not, being gone according to judgment rule
Filter weight coefficient and step factor are updated, step 3 is returned to and recalculates error signal；If it is, the implementation steps terminate.
Embodiment 2：
Above-described embodiment 1 is using three pressure sensor array elements or array as pulse transducer, 1 pressure sensor
Example of the array element as noise transducer.In view of human physiological structure is different, everyone vessel position and bending degree is not
Together, and also for facilitating the people of no any medicine common sense can to use this product, decomposition pressure sensor array in embodiment 2
Position of each pressure sensor array element of row 401 at wrist is not previously set, i.e., does not limit each pressure sensor and pulse
Point and with arterial vascular position relationship, but by the collected signal of pressure sensor come judge its belong to pulse sensing
Device or noise transducer；Pressure sensor may be arranged to rectangular configuration shown in fig. 6, can also use other structures, only
Ensure there is partial pressure sensor array element to be located at pulse area, partial pressure sensor array element is located at non-arterial blood area under control can
With.
The process flow of the present embodiment is roughly the same with the process flow of embodiment 1, can refer to method flow shown in Fig. 3
Figure.
Embodiment 3：
Below to judging the realization method of sensor type (acquisition is pulse or acquisition noise) in Examples 1 and 2
It is described.Fig. 7 shows the step flow chart of the first judgment mode.The steps flow chart is described as follows：
First, frequency domain conversion is carried out to all the sensors data；
Secondly, spectrum analysis is carried out to transformed data, finds the strongest respective frequencies of spectral line；
Later, according to pulse spectrum signature, pulse transducer and noise transducer are distinguished.By frequency can and human normal
Pulse range carry out (45~120 times per minute of normal heartbeat) compare, think normal if falling in this interval range, otherwise recognize
For pulseless signal in frequency spectrum.
Fig. 8 shows the step flow chart of second of judgment mode.Basic principle is that signal is uncorrelated to noise, the step
Process description is as follows：
First, cross correlation process is carried out to different sensors data, can completed also to have handled by frequency domain by time domain
At；
Secondly, obtained cross-correlation coefficient is compared, 0~0.3 closes for microfacies, and 0.3~0.5 closes for reality, 0.5~
0.8 is significantly correlated, and 0.8~1 is highly correlated；
Then, by comparing above, then sensor array is divided into two regions；
Finally, the type for judging two regions in previous step, (can be slightly biased close to the central area of sensor array location
It is left or to the right) it is pulse transducer region, the fringe region close to sensor array location is noise transducer region.
In the case where the number of sensor increases the number more than one of noise transducer, 2 or more can be selected
The data of a noise transducer carry out noise spectrum estimation and noise reduction algorithm processing together, to increase the robustness of algorithm.
More than, embodiments of the present invention are illustrated.But the present invention is not limited to the above embodiments.It is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in the guarantor of the present invention
Within the scope of shield.
Claims (8)
1. the system that a kind of data to traditional Chinese medical pulse manifestation collecting device acquisition carry out noise reduction, which is characterized in that the system includes：In
Cure pulse condition collecting device and intelligent terminal, wherein traditional Chinese medical pulse manifestation collecting device includes sensor array, multi-channel signal conditioning electricity
Road, Multi-path synchronous A/D circuits and microcontroller, the sensor array include pulse transducer and noise transducer, pulse transducer
For acquiring " very little " of wrist artery, the data of "Off", " ruler " pulse point, noise transducer is for acquiring the vibration brought by body
Noise data；Multi-channel signal conditioning circuit is for being filtered and amplifying to the signal that each sensor acquires；Multi-path synchronous A/D electricity
Road is used to the signal through multi-channel signal conditioning processing of circuit in real time, synchronously acquire, and converts thereof into digital signal；
Microcontroller, which is used to transformed digital signal being sent to intelligent terminal, carries out Digital Signal Processing and pulse condition identification；The pulse
Sensor and noise transducer are array of pressure sensors；
Intelligent terminal judges that the digital signal received belongs to pulse transducer or noise transducer, and it is accordingly divided into
Pulse transducer data and noise transducer data；Intelligent terminal Analyze noise sensing data, judges whether noise power reaches
To certain threshold value, if noise power reaches certain threshold value, prompt user's vibration noise excessive, then by sensor array
It resurveys；
Wherein, the intelligent terminal judges that the digital signal received belongs to the method for pulse transducer or noise transducer
For：
First, frequency domain conversion is carried out to all the sensors data；
Secondly, spectrum analysis is carried out to transformed data；
Later, according to pulse spectrum signature, pulse transducer and noise transducer are distinguished；
Alternatively, the intelligent terminal judges that the digital signal received belongs to the method for pulse transducer or noise transducer
For：
First, cross correlation process is carried out to different sensors data；
Secondly, obtained cross correlation results are analyzed；
Then, judge the similar sensor of signal；
Finally, sensor type is judged in conjunction with sensing station.
2. noise reduction system as described in claim 1, which is characterized in that if noise power does not reach certain threshold value, intelligence
Terminal is modified pulse transducer data using noise transducer data.
3. the system that a kind of data to traditional Chinese medical pulse manifestation collecting device acquisition carry out noise reduction, which is characterized in that the system includes：In
Cure pulse condition collecting device and intelligent terminal, wherein traditional Chinese medical pulse manifestation collecting device includes sensor array, multi-channel signal conditioning electricity
Road, Multi-path synchronous A/D circuits and microcontroller, the sensor array include pulse transducer and noise transducer, pulse transducer
For acquiring " very little " of wrist artery, the data of "Off", " ruler " pulse point, noise transducer is for acquiring the vibration brought by body
Noise data；Multi-channel signal conditioning circuit is for being filtered and amplifying to the signal that each sensor acquires；Multi-path synchronous A/D electricity
Road is used to the signal through multi-channel signal conditioning processing of circuit in real time, synchronously acquire, and converts thereof into digital signal；
Microcontroller, which is used to transformed digital signal being sent to intelligent terminal, carries out Digital Signal Processing and pulse condition identification；The pulse
Sensor and noise transducer are array of pressure sensors；
Intelligent terminal judges that the digital signal received belongs to pulse transducer or noise transducer, and it is accordingly divided into
Pulse transducer data and noise transducer data；Intelligent terminal carries out pulse transducer data using noise transducer data
It corrects；
Wherein, the intelligent terminal judges that the digital signal received belongs to the method for pulse transducer or noise transducer
For：
First, frequency domain conversion is carried out to all the sensors data；
Secondly, spectrum analysis is carried out to transformed data；
Later, according to pulse spectrum signature, pulse transducer and noise transducer are distinguished；
Alternatively, the intelligent terminal judges that the digital signal received belongs to the method for pulse transducer or noise transducer
For：
First, cross correlation process is carried out to different sensors data；
Secondly, obtained cross correlation results are analyzed；
Then, judge the similar sensor of signal；
Finally, sensor type is judged in conjunction with sensing station.
4. a kind of data using system alignment as claimed in claim 1 or 2 doctor's pulse condition collecting device acquisition carry out the side of noise reduction
Method, which is characterized in that traditional Chinese medical pulse manifestation collecting device includes pulse transducer and noise transducer, which includes：
Step S1：The collected data of each sensor in sensor array are sent to intelligent terminal by traditional Chinese medical pulse manifestation collecting device；
Step S2：Intelligent terminal judges that the sensing data received belongs to pulse transducer or noise transducer, and will
It is accordingly divided into pulse transducer data and noise transducer data；
Wherein, described to judge that the sensing data received belongs to pulse transducer or the method for noise transducer is：
First, frequency domain conversion is carried out to all the sensors data；
Secondly, spectrum analysis is carried out to transformed data；
Later, according to pulse spectrum signature, pulse transducer and noise transducer are distinguished；
Alternatively, described judge that the sensing data received belongs to pulse transducer or the method for noise transducer is：
First, cross correlation process is carried out to different sensors data；
Secondly, obtained cross correlation results are analyzed；
Then, judge the similar sensor of signal；
Finally, sensor type is judged in conjunction with sensing station；
Step S3：Intelligent terminal Analyze noise sensing data, judges whether noise power reaches certain threshold value, if noise work(
Rate reaches certain threshold value, then prompts user's vibration noise excessive, is then return to step S1 and restarts.
5. the noise-reduction method as shown in claim 4, which is characterized in that in step S3, if noise power does not reach one
Fixed threshold value, intelligent terminal are modified pulse transducer data using noise transducer data.
6. noise-reduction method as claimed in claim 5, which is characterized in that the modified method using adaptive filter method or
The direct subtractive method of frequency spectrum.
7. a kind of method that data using system alignment doctor's pulse condition collecting device acquisition described in claim 3 carry out noise reduction,
It is characterized in that, traditional Chinese medical pulse manifestation collecting device includes pulse transducer and noise transducer, which includes：
Step S1：The collected data of each sensor in sensor array are sent to intelligent terminal by traditional Chinese medical pulse manifestation collecting device；
Step S2：Intelligent terminal judges that the sensing data received belongs to pulse transducer or noise transducer, and will
It is accordingly divided into pulse transducer data and noise transducer data；
Wherein, the intelligent terminal judges that the sensing data received belongs to the side of pulse transducer or noise transducer
Method is：
First, frequency domain conversion is carried out to all the sensors data；
Secondly, spectrum analysis is carried out to transformed data；
Later, according to pulse spectrum signature, pulse transducer and noise transducer are distinguished；
Alternatively, the intelligent terminal judges that the sensing data received belongs to the side of pulse transducer or noise transducer
Method is：
First, cross correlation process is carried out to different sensors data；
Secondly, obtained cross correlation results are analyzed；
Then, judge the similar sensor of signal；
Finally, sensor type is judged in conjunction with sensing station；
Step S3：Intelligent terminal is modified pulse transducer data using noise transducer data.
8. noise-reduction method as claimed in claim 7, which is characterized in that the modified method using adaptive filter method or
The direct subtractive method of frequency spectrum.
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| CN106202932A (en) * | 2016-07-12 | 2016-12-07 | 中国石油化工股份有限公司 | A kind of method evaluating stray electrical current interference curve and interference source curve similarity |
| CN106725368A (en) * | 2016-12-27 | 2017-05-31 | 合肥讯创信息科技有限公司 | Traditional Chinese medicine pulse electro pulsograph |
| CN106725369A (en) * | 2016-12-27 | 2017-05-31 | 合肥讯创信息科技有限公司 | A kind of long-range electropulsograph |
| CN107928639A (en) * | 2017-12-12 | 2018-04-20 | 吉林大学 | A kind of Pulse Signals extraction element |
| CN107928640A (en) * | 2017-12-12 | 2018-04-20 | 吉林大学 | Digital chinese medicine pulse acquisition system |
| CN109805897A (en) * | 2019-03-19 | 2019-05-28 | 北京小成素问信息技术有限公司 | Diagnosis by feeling the pulse pen |
| CN112671358A (en) * | 2020-11-27 | 2021-04-16 | 天津城建大学 | Design method of comprehensive signal generation processing system |
| CN116153505B (en) * | 2023-04-21 | 2023-08-18 | 苏州森斯缔夫传感科技有限公司 | Intelligent critical patient sign identification method and system based on medical pressure sensor |
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| RU2392852C2 (en) * | 2008-02-19 | 2010-06-27 | Закрытое Акционерное Общество "Нанопульс" | Impulse superbroadband sensor of remote breath and heartbeat monitoring |
| CN102144916B (en) * | 2011-04-21 | 2013-01-23 | 华东理工大学 | Multi-channel pulse signal detecting method and device capable of automatically regulating pressure |
| CN103874454B (en) * | 2011-10-11 | 2015-11-25 | 株式会社村田制作所 | Mobile device |
| CN202489940U (en) * | 2011-12-23 | 2012-10-17 | 中国计量学院 | Pulse condition information collecting system |
| JP5454593B2 (en) * | 2012-01-26 | 2014-03-26 | トヨタ自動車株式会社 | Heart rate signal processing apparatus and heart rate signal processing method |
| WO2013132844A1 (en) * | 2012-03-07 | 2013-09-12 | セイコーエプソン株式会社 | Pulse monitor and program |
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