CN107811619A - Portable pulse-taking instrument and its analysis method - Google Patents
Portable pulse-taking instrument and its analysis method Download PDFInfo
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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
- A61B5/02—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
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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
- A61B5/4854—Diagnosis based on concepts of traditional oriental medicine
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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
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7235—Details of waveform analysis
- A61B5/7253—Details of waveform analysis characterised by using transforms
- A61B5/7257—Details of waveform analysis characterised by using transforms using Fourier transforms
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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
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7235—Details of waveform analysis
- A61B5/7264—Classification of physiological signals or data, e.g. using neural networks, statistical classifiers, expert systems or fuzzy systems
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Abstract
The invention discloses a kind of pulse analysis method, gathers the pulse signal of user in real time by acquisition module, and will be sent after the preprocessed module of pulse signal and A/D module processings into the ARM system；The pulse signal received is handled and analyzed by ARM system, draws the health status of tester；The diagnostic result drawn is shown by display module；The present invention can carry out precise acquisition to the pulse condition of user, and be further processed and analyze on this basis, so as to obtain accurate health status diagnosis result, avoid due to doctor practise medicine lack experience caused by discrimination results deviation.
Description
【Technical field】
The invention belongs to technical field of medical instruments, and in particular to a kind of portable pulse-taking instrument and its analysis method.
【Background technology】
The country has been developed that the different pulse-taking instrument of multiple performance (or electropulsograph) at present, and they have used different biographies respectively
Sensor and pulse condition identification technology.The price of pulse-taking instrument is more than ten thousand yuan at present, and volume is big, precision is low, is extremely difficult to convenient real
Effect, therefore it is mainly used in tcm teaching and research, it is not applied to clinical diagnosis also.
Following pulse-taking instrument will towards small volume, precision is high, operation is directly perceived, remote monitoring direction is developed, it will from
Teaching research enters actual clinical practice.
【The content of the invention】
It is an object of the invention to provide a kind of portable pulse-taking instrument and its analysis method, to solve existing pulse-taking instrument precision
It is low, cost is high, bulky problem.
The present invention uses following technical scheme：A kind of pulse analysis method, implements according to following steps：
Step 1, the pulse signal for gathering by acquisition module user in real time, and by the preprocessed module of pulse signal and A/
Sent after D module processings into ARM system；
Step 2, by ARM system the pulse signal received is handled and analyzed：
Step 2.1, one section of steady pulse wave is intercepted in the pulse signal received；
Step 2.2, in steady pulse wave, carry out cycle division using extremum method, draw the periodic quantity T of pulse；
Step 2.3, by pulse cycle value T, draw four amplitude characteristic values of pulse signal：Main wave amplitude h1, main ripple
Gorge amplitude h2, dicrotic pulse prewave peak amplitude h3, dicrotic pulse peak amplitude value h5；And temporal characteristics corresponding to each amplitude characteristic value
Value：Cycle starting point is to main wave amplitude h1Time t1, cycle starting point to main ripple gorge amplitude h2Time t2, cycle starting point to dicrotic pulse
Prewave peak amplitude h3Time t3, cycle starting point to dicrotic pulse peak amplitude value h5Time t5；
Seven characteristic values of pulse signal are calculated by features described above value：Three amplitude characteristic value h2/h1, h3/h1,
h5/h1, four temporal characteristics value t1/ T, t2/ T, t3/ T, t5/T；
Step 2.4, Fourier transformation is carried out to pulse signal, obtain the fundamental frequency value f of pulse signal power spectrum0；
Step 2.5, the three amplitude characteristic value h obtained by step 2.32/h1, h3/h1, h5/h1, four temporal characteristics values
t1/ T, t2/ T, t3/ T, t5/ T, and the fundamental frequency value f of pulse signal power spectrum that step 2.4 obtains0, calculated with reference to BP neural network
Method is handled the pulse signal of input, draws the pulse signal result of user；
Step 3, the pulse signal result of the user drawn in step 2.5 shown by display module.
Further, acquisition pulse cycle value T specific method is in step 2.2：
Step 2.2.1, one section of pulse signal S is chosen in steady pulse wave(t), to S(t)First derivation is carried out, is found out
All zero points correspond to time point t(n), n is the integer more than or equal to 1, and the wave crest point B of periodic signal is found out in n time point；
Step 2.2.2, all minimum points and maximum point in this section of waveform are found out；
Step 2.2.3, the peak point B ' of next cycle after wave crest point B is searched；As pulse signal S(t)In B ' is not present
Point, extend pulse signal S(t)Scope, continue to search for, until find B ' points；
Step 2.2.4, minimum point A, A before B points, B ' points ' is found out respectively；
Step 2.2.5, the distance between A points and A ' points or B and B ' points are pulse cycle T.
The another technical solution of the present invention：The portable pulse-taking instrument that above-mentioned pulse analysis method uses, including for adopting
Collect the detection means of user's pulse signal, detection means includes acquisition module, pretreatment module, the A/D moduluss of conversion being sequentially connected
Block and wireless sending module；
Acquisition module, sent for gathering human body wrist pulse signal, and by the wrist pulse signal collected to pre- place
Manage module；Pretreatment module, the pulse signal sent for receiving acquisition module, and pulse signal is amplified, denoising, and
Pulse signal after processing is sent to A/D modular converters；A/D modular converters, for receiving pretreated pulse signal, and
It is converted into corresponding data signal；Wireless sending module is used for the data signal after A/D is changed and sent to display terminal；
Display terminal, the pulse signal collected for analysis and detection device simultaneously show diagnostic result, and it includes connecting successively
Wireless receiving module, reception control circuit, serial communication modular, ARM system and the display module connect；
Wireless receiving module, for receiving the data signal sent by wireless sending module, and data signal is passed through into string
Port communications module is sent to ARM system；ARM system, for carrying out Treatment Analysis to the data signal received, and diagnosis is tied
Fruit is sent to display module.
Further, pretreatment module includes the voltage lifting circuit and filter circuit being connected with each other；
Voltage lifting circuit, for the pulse signal voltage that sends acquisition module on the occasion of changing and be amplified, and it will put
Pulse signal after big is sent to filter circuit；Filter circuit, for receiving the pulse signal after amplifying, and it is filtered
Denoising.
Further, voltage lifting circuit includes OP07 operational amplifiers, and the output end of OP07 operational amplifiers connects all the way
Voltage output is connect, another way is connected to the inverting input of OP07 operational amplifiers, OP07 operation amplifiers by second resistance R2
The inverting input of device is also grounded after first resistor R1, and the normal phase input end of OP07 operational amplifiers is all the way by the 3rd electricity
Resistance R3 meets+5V, and another way connects circuit by the 4th resistance R4 and inputted, and the normal phase input end of OP07 operational amplifiers also passes through all the way
It is grounded after crossing the 5th resistance R5.
Further, filter circuit includes OP07 operational amplifiers, and the output end of OP07 operational amplifiers connects electricity all the way
Pressure output, another way are connected to the inverting input of OP07 operational amplifiers by second resistance R2, OP07 operational amplifiers
Inverting input is also grounded after first resistor R1, and the normal phase input end of OP07 operational amplifiers passes through the second electric capacity C2 all the way
After be grounded, another way connect the 4th resistance R4 one end, the 4th resistance R4 other end divides two-way, all the way by 3rd resistor R3
Circuit input is connect, another way is grounded after the first electric capacity C1.
Further, sending controling circuit, sending controling circuit are provided between A/D modular converters and wireless sending module
For controlling the data between A/D modular converters and wireless sending module to communicate.
Further, pulse signal acquisition module is photoelectric sensor.
Further, the serial port chip of serial communication modular is MAX232 single supply electrical level transferring chips.
The beneficial effects of the invention are as follows：Precise acquisition can be carried out to the pulse condition of user, pulse week is divided using extremum method
Phase, and then seven characteristic values of pulse signal are obtained, pulse signal is entered using Fourier transform, BP neural network algorithm successively
Row processing, so as to obtain accurate health status diagnosis result, avoid due to doctor practise medicine lack experience caused by distinguish knot
The deviation of fruit.
【Brief description of the drawings】
Fig. 1 is the hardware module connection figure of the portable pulse-taking instrument of the present invention；
Fig. 2 is the analysis method theory diagram of the portable pulse-taking instrument of the present invention；
Fig. 3 is pulse signal amplitude characteristic value schematic diagram；
Fig. 4 is BP neural network 8-11-2 structural representations；
Fig. 5 is the cycle to intercept and obtain the flow chart of pulse cycle value；
Fig. 6 is complete pulse cycle schematic diagram；
Fig. 7 is the voltage lifting circuit diagram in the present invention；
Fig. 8 is the filter circuit circuit diagram in the present invention.
Wherein：1. acquisition module；2. pretreatment module；2-1. voltage lifting circuits；2-2. filter circuit；3.A/D is changed
Module；4. sending controling circuit；5. wireless sending module；6. wireless receiving module；7. receive control circuit；8. serial communication mould
Block；9.ARM systems；10. display module.
【Embodiment】
The present invention is described in detail with reference to the accompanying drawings and detailed description.
The invention discloses a kind of pulse analysis method, as shown in Fig. 2 implementing according to following steps：
Step 1, the real-time pulse signal of user gathered by acquisition module 1, and by the preprocessed He of module 2 of pulse signal
Sent after the processing of A/D modular converters 3 into ARM system 9.
Step 2, by ARM system 9 pulse signal received is handled and analyzed：
Step 2.1, one section of steady pulse wave is intercepted in the pulse signal received；
Step 2.2, pulse cycle division is carried out with Extremal point algorithm in steady pulse wave, draw pulse cycle value T.
As shown in figure 5, specific method is as follows：
Step 2.2.1, one section of steady pulse wave S is chosen(t), to S(t)First derivation is carried out, it is corresponding to find out all zero points
Time point t(n), n is the integer more than or equal to 1, the point that should mutually have signal maximum is found in n time point, as first
The peak time point B of individual periodic signal, this wave crest point is main peak point；
Step 2.2.2, all minimum points and maximum point in this section of waveform are calculated；
Step 2.2.3, the peak point B ' of the next cycle after lookup wave crest point B；
Because on the right of B being the descending branch of waveform, all extreme points are all lower than main peak point on descending branch, and from left to right drastically
Decline, accordingly, can using the first thereafter peak point B ' without significantly down or up peak point as next cycle,
And pulse value corresponding to this point should be greater than the value of its right peak point；
If pulse signal S(t)In B ' points are not present, then extend pulse signal S(t)Scope continue to search for.
Step 2.2.4, minimum point A, A before B points, B ' points ' is found out respectively；
Using first before B points close to valley point (minimum point) as current band starting point A；If pulse signal
S(t)In there is no valley point, then need to change B ' points continuing executing with into B points, return to step 2.2.3.
The starting point A ' of next cycle, and the end point of current period are found out using above-mentioned same method.
Step 2.2.5, as shown in fig. 6, the distance between A points and A ' points or the distance between B and B ' points are pulse week
Phase T
Step 2.3, four amplitude characteristic values for obtaining pulse signal：Main wave amplitude h1, main ripple gorge amplitude h2, dicrotic pulse prewave
Peak amplitude h3, dicrotic pulse peak amplitude value h5, and temporal characteristics value corresponding to each amplitude characteristic value：Cycle starting point is to main ripple
Amplitude h1Time t1, cycle starting point to main ripple gorge amplitude h2Time t2, cycle starting point to dicrotic pulse prewave peak amplitude h3When
Between t3, cycle starting point to dicrotic pulse peak amplitude value h5Time t5。
As shown in figure 3, specific method is：
When pulse cycle only has a main ripple wave crest point, in the absence of other maximum, then explanation is without rich prewave again, weight
Rich ripple and dicrotic notch, the right side of pulse cycle is more steady, terminates the parameter extraction to signal at once；
When pulse cycle has two peak points, then larger peak point is main ripple wave crest point, and less peak point is dicrotic pulse
Wave crest point F, the minimum point between two peak points is dicrotic notch point E, and then draws dicrotic notch height h4And its corresponding time
t4；
When pulse cycle has the maximum of three and more than three, then be successively main ripple wave crest point, dicrotic pulse prewave wave crest point,
Dicrotic pulse wave crest point, the minimum point between main ripple wave crest point and dicrotic pulse prewave wave crest point are main ripple gorge point C, dicrotic pulse prewave wave crest point
Minimum point between dicrotic pulse wave crest point is dicrotic notch point E.Thus, the parameter of cycle pulse can obtain.
Wherein, main wave amplitude h1, be main ripple crest range value.What it reflected heart arter complies with degree and the left heart
The quality of the Ejection function of room；Main ripple gorge amplitude h2, refer to the trough between main ripple and dicrotic pulse prewave, the value reflects arterial blood
Situation and blood vessel elasticity size of the pipe by resistance；The range value h of dicrotic pulse prewave crest3, its represent physiology implication and main ripple
Gorge amplitude h2It is similar；Dicrotic pulse peak amplitude value h5, it reflects Arterial compliance situation.
Step 2.4, Fourier transformation is carried out to pulse signal, obtain the fundamental frequency value f of pulse signal power spectrum0, it shows
The speed of heartbeat.
Step 2.5, using the result of step 2.2,2.3 and 2.4 it can calculate eight characteristic values：Three amplitude characteristic values
h2/h1, h3/h1, h5/h1, four temporal characteristics value t1/ T, t2/ T, t3/ T, t5/ T, and the fundamental frequency value f of pulse signal power spectrum0。
As shown in figure 4, being handled with reference to BP neural network algorithm the pulse signal of input, and draw the pulse of user
Signal processing results, corresponding user is health status or sub-health state.
The concrete structure of BP neural network algorithm is：Input layer has 8 neurons, corresponds to 8 characteristic values, hidden layer respectively
There are 11 neurons, output layer is 2, corresponds to health and inferior health two states respectively.This structure be by a large amount of health,
The training of inferior health standard pulse profile data and it is calculated, it is as follows in detail：
The present invention have chosen 454 groups of data and carry out emulation experiment.Wherein health data is 291 groups, and inferior health data are 163
Group.Neutral net is trained with 270 data therein, remaining 184 groups of data are used for the discrimination of test network.With nerve
The increase of hidden layer neuron quantity in network, discrimination is not linearly increasing, but becomes again in what is slowly declined after increasing
Gesture.When neuronal quantity is 11, i.e., neural network structure is the discrimination for reaching maximum, health and inferior health at BP8-11-2
Maximum is all reached, now healthy discrimination reaches 91.7%, and the discrimination of inferior health is 91.2%.
Step 3, the pulse signal result of user shown by display module 10.
The invention also discloses the portable pulse-taking instrument that a kind of above-mentioned pulse analysis method uses, as shown in figure 1, by examining
Survey device and display terminal two parts are formed.Detection means is used to gather user's pulse signal, and detection means includes being sequentially connected
Acquisition module 1, pretreatment module 2, A/D modular converters 3 and wireless sending module 5.
Pulse-taking instrument also includes being used for the pulse signal that analysis and detection device collects and shows the display terminal of diagnostic result,
Display terminal includes wireless receiving module 6, serial communication modular 8, ARM system 9 and the display module 10 being sequentially connected.
Acquisition module 1, sent for gathering human body wrist pulse signal, and by the wrist pulse signal collected to pre- place
Manage module 2.Traditional pulse signal acquisition method mainly has three kinds：First, extracted from electrocardiosignal；Second, from measurement blood pressure
When the pressure sensor fluctuation that measures obtain；Third, photoplethymograph.First two method extraction signal can all limit patient
Activity, if long-time use can increase patient's physiology and psychological discomfort.So photo-electric arteries and veins is used in the present invention
Fight sensor, even if gathering pulse signal with photoplethymograph.The photo-electric pulse transducer is fixed by bandage or clip
In the wrist of patient, it is made up of light source and photoelectric transformer two parts.Light source is typically using to oxygen in arterial blood and blood red
The light emitting diode of the selective certain wavelength (500nm~700nm) of albumen.When light beam passes through human peripheral blood vessel, due to
The change of arteriopalmus hyperemia volume causes this Shu Guang light transmittance to change, and is now received by photoelectric transformer through tissue
The light of reflection, it is changed into electric signal and is amplified and exported.Because pulse is with heartthrob and periodically variable
Signal, the also cyclically-varying of arteries volume, therefore the change in electric cycle of photoelectric transformer is exactly pulse frequency.This method
Have the characteristics that method is simple, easy to use, reliability is high.
Pretreatment module 2, the pulse signal sent for receiving acquisition module 1, the main function of the module is to faint
Signal is amplified, and filters out the noise being mingled with the signal, while analog signal is adjusted into A/D and changes allowed scope,
And send the pulse signal after processing to A/D modular converters 3, it includes voltage lifting circuit 2-1 and the filtering being connected with each other
Circuit 2-2.
As shown in fig. 7, voltage lifting circuit 2-1, the pulse signal voltage for acquisition module 1 to be sent are gone forward side by side on the occasion of change
Row amplification, and the pulse signal after amplification is sent to filter circuit 2-2.Voltage lifting circuit 2-1 can use in general same
Phase summing circuit, i.e., using making pulse signal voltage integrally increase corresponding magnitude of voltage with phase summing circuit, so as to realize pulse
The voltage lifting of signal.
Voltage lifting circuit 2-1 includes OP07 operational amplifiers, and the output end of OP07 operational amplifiers connects voltage all the way
Output, another way are connected to the inverting inputs of OP07 operational amplifiers by second resistance R2, OP07 operational amplifiers it is anti-
Phase input is also grounded after first resistor R1, and the normal phase input end of OP07 operational amplifiers connects by 3rd resistor R3 all the way
+ 5V, another way connect circuit by the 4th resistance R4 and inputted, and the normal phase input end of OP07 operational amplifiers also passes through the 5th all the way
It is grounded after resistance R5.
The voltage of pulse signal is in the range of -0.5V-1.5V.For convenience of data processing below, need to enter voltage herein
Row makes pulse signal voltage integrally increase corresponding voltage, so as to realize arteries and veins on the occasion of changing pretreatment using in-phase amplification circuit
Fight the voltage lifting of signal.The amplifier selected in the present invention is OP07 operational amplifiers, and its amplifier precision is high, input noise
Voltage amplitude is relatively low compared with other similar devices.
As shown in figure 8, filter circuit 2-2, for receiving the pulse signal after amplifying, and is filtered denoising to it.By
Shake or other interference in human body, many clutters can be contained by collecting human pulse ripple, and the pulse frequency of human normal is very
It is low and be limited to it is a bit of in, therefore need to add hardware filtering circuit carry out filtering at initial stage.Filter circuit 2-2 can select simple
Second-order low-pass filter.
Filter circuit 2-2 includes OP07 operational amplifiers, and the output end of OP07 operational amplifiers connects voltage output all the way,
Another way is connected to the inverting input of OP07 operational amplifiers, the anti-phase input of OP07 operational amplifiers by second resistance R2
End is also grounded after first resistor R1, and the normal phase input end of OP07 operational amplifiers is grounded after the second electric capacity C2 all the way,
Another way connects the 4th resistance R4 one end, and the 4th resistance R4 other end divides two-way, connects circuit by 3rd resistor R3 all the way
Input, another way are grounded after the first electric capacity C1.
Due to that can introduce some other interference such as Hz noise in voltage lifting circuit 2-1, filter circuit 2-2 not only disappears
Except the caused interference in voltage lifting circuit 2-1, also eliminate due to the caused interference in systems of other reasons.In addition, filter
Wave circuit 2-2 output signal is sent to A/D modular converters 3, to carry out the analog-to-digital conversion of next step.The frequency of human pulse signal
Rate is very low, and the pulse signal collected by pulse transducer is highly susceptible to the interference of some factors, can use hardware circuit or
Person's software filtering is handled, so as to eliminate these interference.The present invention is on hardware using the method for low-pass filter circuit to adopting
Collect to pulse signal carry out interference and handle.
A/D modular converters 3, for receiving amplified and removing the pulse signal of dry processing, and it is converted into corresponding number
Word signal, then reach wireless sending module 5 by sending controling circuit 4.A/D modular converters 3 are using 16bit's in the present invention
ATmega328 low-power consumption A/D conversion chips, have only taken the high 10bit of AD conversion result in use.
Sending controling circuit 4 is provided between A/D modular converters 3 and wireless sending module 5, sending controling circuit 4 is used for
The data communication between A/D modular converters 3 and wireless sending module 5 is controlled, its task is that the sequential for arranging analog-to-digital conversion properly is asked
Topic, and host computer is received to the instruction come.Wireless sending module 5 is used to send data signal to wireless receiving module 6.
Wireless receiving module 6, for receiving the data signal sent by wireless sending module 5, and data signal is passed through
Serial communication modular 8 is sent to ARM system 9.Because the present invention seeks to the short distance in ward, office or household rooms
Used under environment, distance is about at tens meters, suitably using short range wireless transmission technology.Present invention employs based on FHSS skills
The nRF series of art, it is industry volume minimum, the radio system level chip that power consumption is minimum, peripheral cell is minimum, cost is minimum.
The module interface mode that chip is formed is simply, programming is convenient, traffic rate is higher, using spread spectrum and frequency hopping, has higher
Stability and security, the advantages of also cost is cheap.
It is provided between wireless receiving module 6 and serial communication modular 8 and receives control circuit 7, is received control circuit 7 and be used for
The data communication between wireless receiving module 6 and serial communication modular 8 is controlled, its task is that the sequential for arranging data transmission properly is asked
Topic, the data signal sent by wireless sending module 5 that control wireless receiving module 6 receives, and send to serial communication modular
8。
Serial communication modular 8, for receiving data signal and sending to ARM system 9, it is the company of host computer and slave computer
Socket part point, serves bridge beam action, the pulse data collected can be given to embedded-type ARM microprocessor by the interface circuit
Device system, the signal processing analysis of next step could be carried out afterwards.The interface of serial mode needs a serial port chip and first device
Part realizes the communication of single-chip microcomputer and embedded-type ARM microprocessor system, and designs that succinct, cost is cheap, substantially reduces
Lead time.Serial communication modular 8 has used MAX232 single supply electrical level transferring chips.The MAX232 chip works of MAXIM companies
Make reliably, peripheral components are few.Complete RS-232C interfaces have 25 lines, and using the socket of 25 cores, and ARM serial ports majority is adopted
With 9 simplified needle sockets, serial port programming only needs to use 2,3,5 ends of 9 needle sockets.ATmega328 in A/D modular converters 3
Carry out using asynchronous communication meanses during serial communication between ARM, the transmission and receiving of data are carried out according to the form of regulation.This
System crystal oscillator is 32kHz, and using auxiliary clock ACLK, setting baud rate is 9600 bps, can meet transmission rate completely,
Data bit is 8.For the second function it is serial port function two pins selection that the serial ports of single-chip microcomputer receives and sends, single-chip microcomputer
Need to send data, then interrupt sending using serial ports.
ARM system 9, sent for carrying out Treatment Analysis to the data signal received, and by diagnostic result to display mould
Block 10.ARM system 9 receives the data signal sent of serial communication modular 8, it is carried out feature extraction, recognizer, health/
A series of processing such as inferior health judgement, and final health/inferior health result of determination is sent to display module 10.
Display module 10, shown for the result after ARM system 9 is analyzed and processed.Display module 10 has man-machine
Interactive function, it is possible to achieve the function such as the storage of pulse wave data and personal information, inquiry, editor, analysis, display.The present invention
The function of middle display module 10, which is realized, employs the storehouse Qt technologies of increasing income based on C++.
The present invention finally extracts useful human pulse ripple letter according to the series of computation to pulse profile data and processing
Breath, and display it, measured is had gained some understanding the health status of oneself.In addition, wireless receiving module 6 and wireless hair
Module 5 is sent, perfect Bluetooth Communication Technology scheme is provided by using HC-06 bluetooth modules, possesses 8Mbit Flash,
2.4GHz antenna, employ AFH technology.Configuration process is optimized simultaneously, security reliability is improved, reduces
Power consumption, its transmission rate are up to 3Mbps, have stable data transmission capabilities, higher real-time.The portable pulse-taking instrument
Analysis result display module 10 both may be mounted on mobile phone, can also be arranged in computer or Other Instruments, i.e., both can be
Show on mobile phone, can be shown again on computer or Other Instruments.This is the big characteristic and beneficial effect of the application.
The present invention portable pulse-taking instrument small volume, be easy to carry, price is low, operation is directly perceived, can also carry out remote monitoring,
Realize diagnostic system variation.
In addition, this portable pulse-taking instrument has good data acquisition ability, (sample rate 100Hz, sampling precision are
10bit), there are following features：
(1) stable data transmission capabilities, higher real-time.
(2) cheap cost, small volume.The design is based on AVR single chip as its control core, is a kind of cheap micro-
Type processor, thus reduce cost and reduce volume.
(3) concise interactive interface.
Claims (9)
- A kind of 1. pulse analysis method, it is characterised in that implement according to following steps：Step 1, the pulse signal by acquisition module (1) collection user in real time, and by the preprocessed module of the pulse signal (2) and after A/D modular converters (3) processing send into the ARM system (9)；Step 2, by the ARM system (9) pulse signal received is handled and analyzed：Step 2.1, one section of steady pulse wave is intercepted in the pulse signal received；Step 2.2, in the steady pulse wave, carry out cycle division using extremum method, draw the periodic quantity T of pulse；Step 2.3, by pulse cycle value T, draw four amplitude characteristic values of pulse signal：Main wave amplitude h1, main ripple gorge amplitude h2, dicrotic pulse prewave peak amplitude h3, dicrotic pulse peak amplitude value h5；And temporal characteristics value corresponding to each amplitude characteristic value：Cycle Starting point is to main wave amplitude h1Time t1, cycle starting point to main ripple gorge amplitude h2Time t2, cycle starting point to dicrotic pulse prewave crest Amplitude h3Time t3, cycle starting point to dicrotic pulse peak amplitude value h5Time t5；Seven characteristic values of pulse signal are calculated by features described above value：Three amplitude characteristic value h2/h1, h3/h1, h5/h1, Four temporal characteristics value t1/ T, t2/ T, t3/ T, t5/T；Step 2.4, Fourier transformation is carried out to pulse signal, obtain the fundamental frequency value f of pulse signal power spectrum0；Step 2.5, the three amplitude characteristic value h obtained by step 2.32/h1, h3/h1, h5/h1, four temporal characteristics value t1/ T, t2/ T, t3/ T, t5/ T, and the fundamental frequency value f of pulse signal power spectrum that step 2.4 obtains0, with reference to BP neural network algorithm pair The pulse signal of input is handled, and draws the pulse signal result of user；Step 3, the pulse signal result of the user drawn in step 2.5 shown by display module (10).
- 2. pulse analysis method as is described in the claims, it is characterised in that pulse cycle value T tool is obtained in step 2.2 Body method is：Step 2.2.1, one section of pulse signal S is chosen in steady pulse wave(t), to S(t)First derivation is carried out, is found out all Zero point corresponds to time point t(n), n is the integer more than or equal to 1, and the wave crest point B of periodic signal is found out in n time point；Step 2.2.2, all minimum points and maximum point in this section of waveform are found out；Step 2.2.3, the peak point B ' of next cycle after wave crest point B is searched；As pulse signal S(t)In B ' points are not present, Extend pulse signal S(t)Scope, continue to search for, until find B ' points；Step 2.2.4, minimum point A, A before B points, B ' points ' is found out respectively；Step 2.2.5, the distance between A points and A ' points or B and B ' points are pulse cycle T.
- 3. the portable pulse-taking instrument that the pulse analysis method described in claim 1 or 2 uses, it is characterised in that including for adopting Collect the detection means of user's pulse signal, described detection means includes acquisition module (1), the pretreatment module being sequentially connected (2), A/D modular converters (3) and wireless sending module (5)；The acquisition module (1), sent for gathering human body wrist pulse signal, and by the wrist pulse signal collected to pre- Processing module (2)；The pretreatment module (2), the pulse signal sent for receiving the acquisition module (1), and to described Pulse signal is amplified, denoising, and the pulse signal after processing is sent to the A/D modular converters (3)；The A/D turns Block (3) is changed the mold, for receiving the pretreated pulse signal, and is converted into corresponding data signal；Described nothing Line sending module (5) is used for the data signal after A/D is changed and sent to display terminal；The display eventually, holds the pulse signal collected for analysis and detection device and shows diagnostic result, it includes connecting successively Wireless receiving module (6), reception control circuit (7), serial communication modular (8), ARM system (9) and the display module (10) connect；The wireless receiving module (6), for receiving the data signal that is sent by the wireless sending module (5), and by numeral Signal is sent to ARM system (9) by serial communication modular (8)；Described ARM system (9), for believing the numeral received Number Treatment Analysis is carried out, and diagnostic result is sent to the display module (10).
- 4. portable pulse-taking instrument as claimed in claim 3, it is characterised in that the pretreatment module (2) includes being connected with each other Voltage lifting circuit (2-1) and filter circuit (2-2)；The voltage lifting circuit (2-1), for by the pulse signal voltage that the acquisition module (1) is sent on the occasion of changing and carry out Amplification, and the pulse signal after amplification is sent to filter circuit (2-2)；The filter circuit (2-2) is used to receive described put Pulse signal after big, and denoising is filtered to it.
- 5. portable pulse-taking instrument as claimed in claim 4, it is characterised in that described voltage lifting circuit (2-1) includes OP07 Operational amplifier, the output end of the OP07 operational amplifiers connect voltage output all the way, and another way connects by second resistance R2 The inverting input of OP07 operational amplifiers is connected to, the inverting input of OP07 operational amplifiers is also followed by by first resistor R1 Ground, the normal phase input end of the OP07 operational amplifiers meet+5V by 3rd resistor R3 all the way, and another way passes through the 4th resistance R4 Circuit input is connect, the normal phase input end of the OP07 operational amplifiers also has to be grounded after the 5th resistance R5 all the way.
- 6. the portable pulse-taking instrument as described in claim 4 or 5, it is characterised in that described filter circuit (2-2) includes OP07 Operational amplifier, the output end of the OP07 operational amplifiers connect voltage output all the way, and another way connects by second resistance R2 The inverting input of OP07 operational amplifiers is connected to, the inverting input of OP07 operational amplifiers is also followed by by first resistor R1 Ground, the normal phase input end of the OP07 operational amplifiers are grounded after the second electric capacity C2 all the way, and another way connects the 4th resistance R4 one end, the other end of the 4th resistance R4 divide two-way, connect circuit input by 3rd resistor R3 all the way, and another way is passed through It is grounded after first electric capacity C1.
- 7. portable pulse-taking instrument as claimed in claim 6, it is characterised in that described A/D modular converters (3) and wireless transmission Sending controling circuit (4) is provided between module (5), the sending controling circuit (4) is used to control the A/D modular converters (3) the data communication between wireless sending module (5).
- 8. portable pulse-taking instrument as claimed in claim 6, it is characterised in that described pulse signal acquisition module (1) is light Electric transducer.
- 9. portable pulse-taking instrument as claimed in claim 6, it is characterised in that the serial ports core of described serial communication modular (8) Piece is MAX232 single supply electrical level transferring chips.
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