CN107997749A - A kind of design Chinese medicine pulse-taking system - Google Patents
A kind of design Chinese medicine pulse-taking system Download PDFInfo
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- CN107997749A CN107997749A CN201711314362.8A CN201711314362A CN107997749A CN 107997749 A CN107997749 A CN 107997749A CN 201711314362 A CN201711314362 A CN 201711314362A CN 107997749 A CN107997749 A CN 107997749A
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Classifications
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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
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6802—Sensor mounted on worn items
- A61B5/681—Wristwatch-type devices
-
- 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
- A61B5/7203—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/02—Details of sensors specially adapted for in-vivo measurements
- A61B2562/0247—Pressure sensors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/02—Details of sensors specially adapted for in-vivo measurements
- A61B2562/0271—Thermal or temperature sensors
Abstract
A kind of design Chinese medicine pulse-taking system of the present invention belongs to the technical field of electronic equipment, its structure has microcontroller (1), display panel module (2), keyboard input module (3), data memory module (4), pressure sensor module (5), waveform acquisition module (6), high fidelity signals translation circuit (7), noise suppression circuit (8), analog-digital converter (9), digital temperature sensor (10), wrist strap (11).The present invention has the characteristics that high certainty of measurement, strong antijamming capability, has design.
Description
Technical field
The invention belongs to the technical field of electronic equipment, more particularly to a kind of design Chinese medicine pulse-taking system.
Background technology
Social development is rapid now, and people's live and work rhythm is all quickly so that and the life stress of people is increasing,
Body is easily accessible inferior health or morbid state.The traditional Chinese medical science raises the body in sub-health state in health, has very much
Effective method.The traditional Chinese medical science has long history, is even more to take the course of its own in the world.Diagnosis by feeling the pulse is that the traditional Chinese medical science is hoped, hears, asks, cut
Important link in " four methods of diagnosis ", is one of marrow of the traditional Chinese medical science, is a kind of embodiment of tcm diagnosis basic principle " in carrying outside department ".In
Medicine thinks that lesion occurs for viscera qi and blood, and blood vessels operation will be affected, and pulse condition just changes, therefore diagnosis by feeling the pulse is being faced
The advance and retreat prognosis of deducibility disease on bed, objective basis is provided for the treatment of disease.Each from ancient times to the present name doctor accumulates for diagnosis by feeling the pulse
Abundant Academic Experience, but diagnosis by feeling the pulse is all to determine the state of an illness by doctor's subjective judgement.This causes diagnosis by feeling the pulse result to disease description
Accuracy, reproducibility and uniformity be under suspicion.How with objective scientific instrument, the function of diagnosis by feeling the pulse is explained with numeral
It is clear, it is always the target that people make great efforts.Numerous scientific workers worldwide expand correlative study for this, with
The developing of epoch, the progress of science and technology, pulse-taking instrument come into being.
Since the fifties in last century, with the fast development of electronic technology, many experts both at home and abroad, which just contemplate, passes through profit
With modern science and technology, develop can be used for pulse wave spectrum it is more accurate, objectify and intelligentized pulse-taking instrument.With a variety of surveys
Examination technology and method, are directed to pulse wave spectrum research, it is expected the ways and means with modern science, the sensation under doctor is referred to turns
Change the data that can be analyzed using modern science and technology means into, and gathered and shown, so as to change that
The situation of subjective, abstract " know clearly in the heart, refer to lower hardly possible bright ".It is theoretical according to pulse wave spectrum, carry out the collection of pulse condition multidimensional information
Analyzed with pulse condition information, objective basis can be provided for the diagnosis and early detection of some clinical common major diseases.Publication No.
The Chinese patent " electronics pulse-taking instrument " of CN104905771A is to be passed with the immediate prior art of the present invention, the patent using pressure
Sensor gathers the cun,guan,chi signal of patient, recycles signal amplifier and A/D converter that the signal of collection is amplified and changed
Computer system is sent into digital signal, is compared with the pulse condition collection of illustrative plates stored in computer system.The patent structure is simple,
Pulse signal is converted into electric signal and is digitized so that doctor can carry out quantitative study to pulse signal, and avoid
The influence of subjective factor when different doctors feel the pulse same pulse condition.
But the existing diagnosis by feeling the pulse technology including CN104905771A is mainly reflected in following also there are shortcomings
Aspect：1st, the pulse signal of pressure sensor collection is defeated in special ultra-weak electronic signal, and existing diagnosis by feeling the pulse system is using common
Amplifier easily produce distortion when being amplified to it；2nd, the output impedance of pressure sensor is generally large, and with pressure
Transforming impedance can change, and common voltage amplifier (such as in-phase proportion amplifier, anti-phase proportional amplifier etc.)
Input impedance be difficult to it is matched, so as to influence the normal work of pressure sensor；3rd, useful signal of the ambient noise to collection
Have a great influence, such as cannot effectively suppress, then the waveform finally obtained can be made to have serious distortion, it is impossible to the original arteries and veins of actual response
As；4th, pressure sensor is generally influenced by environmental temperature, at different ambient temperatures, past to the collection result of same pulse condition
It is past to have very big offset so that collection result does not have uniformity.
The above defect all carrys out many inconvenience to follow-up diagnosis, analytic band, it is easy to causes mistaken diagnosis, therefore existing arteries and veins
Examine equipment also need to it is further perfect.
The content of the invention
The technical problem to be solved in the present invention is overcome in background technology existing for existing pulse signal acquisition technique not
Foot, there is provided a kind of design Chinese medicine pulse-taking system is small, influenced by ambient temperature small to reach high certainty of measurement, distortion
For the purpose of.
The technical solution that the present invention takes is as follows：
A kind of design Chinese medicine pulse-taking system, its structure have microcontroller 1, display panel module 2, keyboard input module
3rd, data memory module 4, pressure sensor module 5, waveform acquisition module 6, analog-digital converter 9 and wrist strap 11；It is characterized in that,
Structure also has high fidelity signals translation circuit 7, noise suppression circuit 8, digital temperature sensor 10；
The display panel module 2, data memory module 4 are connected with microcontroller 1；
The pressure sensor module 5 is the row rheostat array of pressure sensors of 8 rows × 16, is attached to wrist strap 11
Inner side, wrist strap 11 are used to pressure sensor module 5 is fixed in the wrist of measured and makes pressure sensor module 5 cover quilt
The pulse area of survey person；
The structure of the waveform acquisition module 6 is that 16 select 16 of an analog switch chip to select input terminal difference
It is connected with 16 column address ends of pressure sensor module 5, public output ground connection, control terminal is connected with microcontroller 1；Eight select one
8 selection input terminals of analog switch chip are connected with 8 row address ends of pressure sensor module 5 respectively, public output
The input terminal of high fidelity signals translation circuit is connect, control terminal is connected with microcontroller 1；
The structure of the high fidelity signals translation circuit 7 is that the inverting input of amplifier U1A becomes as high fidelity signals
The input terminal of circuit 7 is changed, is denoted as port PSensor, the eight public output for selecting an analog switch chip in welding wave acquisition module 6
End, the inverting input of amplifier U1A and the indirect resistance R1 of output terminal, the in-phase input end of output termination amplifier U1B, amplifier
The inverting input of U1B and the indirect resistance R2 of output terminal, output terminal of the output terminal as high fidelity signals translation circuit 7, note
For port RudePO, the input terminal of noise suppression circuit 8 is connect；A termination power VCC of slide rheostat W1, other end ground connection,
The in-phase input end of slip termination amplifier U1A and the in-phase input end of amplifier U2A, the anti-phase input terminating resistor R4 of amplifier U2A
One end, one end, one end of resistance R6 of resistance R5, resistance R6 the other end ground connection, another termination amplifier U2A's of resistance R4
Output terminal, one end of another termination slide rheostat W2 of resistance R5, the slip termination amplifier U1B's of slide rheostat W2 is anti-phase
Input terminal, one end of the output terminating resistor R3 of amplifier U2A, the inverting input of another termination amplifier U1B of resistance R3, amplifier
The positive power source terminal of U1A and amplifier U2A all meet power supply VCC, and negative power end is all grounded；
The structure of the noise suppression circuit 8 is that the inverting input of amplifier U2B is connected with output terminal, homophase input
One end of terminating resistor R8 and one end of capacitance C1, the other end ground connection of capacitance C1, the one of another terminating resistor R7 of resistance R8
End and one end of capacitance C2, the input terminal of the other end of resistance R7 as noise suppression circuit 8, are denoted as port RudePI, connect height
The output terminal of Fidelity signal translation circuit 7, the output terminal of another termination amplifier U2B of capacitance C2, the output termination electricity of amplifier U2B
Hinder one end of R9, one end of one end of another termination capacitor C3 of resistance R9, one end of resistance R10 and resistance R11, capacitance C3's
The other end is grounded, the inverting input of another termination amplifier U3A of resistance R10 and one end of capacitance C4, the other end of resistance R11
It is grounded with the in-phase input end of the output terminal amplifier U3A of another termination amplifier U3A of capacitance C4, positive supply termination power VCC, bears
Power end is grounded, and output terminal of the output terminal as noise suppression circuit 8, is denoted as port PO, connects the analog signal of analog-digital converter 9
Input terminal；
The digital signal output end of the analog-digital converter 9 is connected with microcontroller 1.
Preferably, the keyboard input module 3 has power switch, start button, checks button.
Preferably, the digital temperature sensor 10 is positioned over the central area of pressure sensor module 5, and export
End is connected with microcontroller 1.
Beneficial effect：
1st, the present invention uses high fidelity signals translation circuit, using the non-linear amplifying technique of variable coefficient, by pressure signal essence
Really it is converted into the voltage signal for being adapted to subsequent conditioning circuit processing.
2nd, the characteristics of present invention is directed to pulse signal and noise signal, is designed with quadravalence noise suppressed before analog-to-digital conversion
Circuit, can effectively suppress the interference of environment and human body noise to pulse signal.
3rd, the present invention is detected environment temperature using digital temperature sensor and is input to microcontroller, it can be achieved that by list
Piece machine carries out design, to eliminate influence of the environment temperature to testing result.
4th, the present invention will be abstracted fuzzy pulse signal digitlization, embody, and be Traditional Chinese Medicine and the knot of computer science
The digital traditional Chinese medical science of development is closed to lay a good foundation.
Brief description of the drawings
Fig. 1 is the physical arrangement schematic diagram of the present invention.
Fig. 2 is the electrical connection schematic diagram of the present invention.
Fig. 3 is pressure sensor module 5 and the connection diagram of waveform acquisition module 6 in the present invention.
Fig. 4 is the basic circuit diagram of the high fidelity signals translation circuit 7 used in the present invention.
Fig. 5 is the basic circuit diagram of the noise suppression circuit 8 used in the present invention.
Embodiment
The implementation to the present invention is specifically described below in conjunction with the accompanying drawings, the device ginseng marked in accompanying drawings and embodiments
Number is preferred parameter, rather than the limitation to protection scope of the present invention.
The overall structure of the present invention of embodiment 1
The present invention physical arrangement as shown in Figure 1, electrical connection as shown in Fig. 2, the present invention structure include microcontroller 1,
Display panel module 2, keyboard input module 3, data memory module 4, pressure sensor module 5, waveform acquisition module 6, high-fidelity
Signal conversion circuit 7, noise suppression circuit 8, analog-digital converter 9, digital temperature sensor 10, wrist strap 11.
The high fidelity signals translation circuit of the present invention of embodiment 2
As shown in figure 4, the present invention employs a high fidelity signals translation circuit after waveform acquisition circuit, specific knot
Structure is, the input terminal of the inverting input of amplifier U1A as high fidelity signals translation circuit 7, is denoted as port PSensor, connects ripple
Eight common ports for selecting an analog switch chip, the inverting input of amplifier U1A and the indirect resistance of output terminal in shape acquisition module 6
R1, the in-phase input end of output termination amplifier U1B, the inverting input of amplifier U1B and the indirect resistance R2 of output terminal, output terminal
As the output terminal of high fidelity signals translation circuit 7, port RudePO is denoted as, connects the input terminal of noise suppression circuit 8；Slide and become
Hinder a termination power VCC of device W1, other end ground connection, the in-phase input end of slip termination amplifier U1A is same mutually defeated with amplifier U2A's
Enter end, one end of anti-phase input terminating resistor R4, one end of resistance R5, one end of resistance R6 of amplifier U2A, resistance R6's is another
End ground connection, the output terminal of another termination amplifier U2A of resistance R4, one end of another termination slide rheostat W2 of resistance R5 are sliding
The inverting input of the slip termination amplifier U1B of dynamic rheostat W2, one end of the output terminating resistor R3 of amplifier U2A, resistance R3
Another termination amplifier U1B inverting input, the positive power source terminal of amplifier U1A and amplifier U2A all connects power supply VCC, negative power end
All it is grounded.
The circuit uses the non-linear amplifying technique of variable coefficient, the amplification coefficient of circuit is changed with the change of prime signal
Become, so that the change in resistance information of forepressure sensor to be converted into carrying out without distortion to the voltage signal of analog-to-digital conversion.
The noise suppression circuit of the present invention of embodiment 3
As shown in figure 5, the present invention is also added into noise suppression circuit, concrete structure is amplifier before analog-to-digital conversion
The inverting input of U2B is connected with output terminal, and one end of homophase input terminating resistor R8 and one end of capacitance C1, capacitance C1's is another
One end is grounded, one end of another terminating resistor R7 and one end of capacitance C2 of resistance R8, and the other end of resistance R7 presses down as noise
The input terminal of circuit 8 processed, is denoted as port RudePI, connects the output terminal of high fidelity signals translation circuit 7, another termination of capacitance C2
The output terminal of amplifier U2B, one end of the output terminating resistor R9 of amplifier U2B, one end of another termination capacitor C3 of resistance R9, electricity
One end of R10 and one end of resistance R11 are hindered, the other end ground connection of capacitance C3, another termination amplifier U3A's of resistance R10 is anti-phase
The output terminal amplifier U3A of one end of input terminal and capacitance C4, the other end of resistance R11 and another termination amplifier U3A of capacitance C4
In-phase input end ground connection, positive supply termination power VCC, negative power end ground connection, output of the output terminal as noise suppression circuit 8
End, is denoted as port PO, connects the input end of analog signal of analog-digital converter 9.
Since the pressure sensor for detecting pulse signal is easily disturbed by human biological electricity and ambient noise, this hair
Bright the characteristics of being directed to pulse signal and human body and ambient noise signal, noise suppression circuit is devised, can be had before analogue-to-digital
Effect suppresses noise, improves the reliability of measurement result.
The temperature compensation function of the present invention of embodiment 4
Since environment temperature can have an impact the testing result of pressure sensor, the present invention devises temperature-compensating electricity
Digital temperature sensor 10 (DS18B20), is specifically positioned over the central area of pressure sensor module 5, and output terminal by road
It is connected with microcontroller 1；Digital temperature sensor 10 detects the environment temperature residing for pressure sensor module 5, and result is transmitted
To microcontroller 1, microcontroller 1 is modified the testing result of pressure sensor module 5 using temperature compensation algorithm, to eliminate ring
Influenced caused by the temperature change of border.
The operation principle and process of the present invention of embodiment 5
With reference to figure 1, during work, first wrist strap 11 is sleeved in the wrist of tester, and make the sensing of pressure sensor module 5
The cun,guan,chi region of device array coverage test person's pulse, opens the power switch of the present invention, and display panel module 2 can be shown
Self-test information, armed state is shown after the completion of self-test, presses start button, and microcontroller 1 controls 16 in waveform acquisition module 6
Select an analog switch chip (CD4067) and eight to select an analog switch chip (MAX4781), to array of pressure sensors 5 (8 rows ×
The 16 rheostat array of pressure sensors of row 128) each point the scanning of pressure procession, pressure in cun,guan,chi position passes
Sensor can detect the change of pressure, other regions do not have pressure change then due to no pulse due to the presence of pulse signal
Change, the pressure change at cun,guan,chi causes the change in resistance (being inversely proportional with pressure) of pressure sensor, and the change in resistance is high
Fidelity signal translation circuit 7 detects, so that the overall amplification coefficient of high fidelity signals translation circuit 7 changes (with resistance
Value is inversely proportional), and then the change voltage signal amplified in output terminal, the signal is after noise suppression circuit 8, with pulse
The noise signal of Signal averaging can be eliminated, and being converted into digital quantity then into analog-digital converter 9 (AD7688) is re-fed into
Microcontroller 1.Meanwhile environment temperature residing for (DS18B20) detection pressure of digital temperature sensor 10 sensor assembly 5 and will knot
Fruit is sent into microcontroller 1.Microcontroller 1 is modified the measurement result of pressure sensor module according to environment temperature, will finally repair
Measurement result after just is stored in data memory module 4 (M95M01EEPROM storage chips).
Claims (3)
1. a kind of design Chinese medicine pulse-taking system, its structure has microcontroller (1), display panel module (2), key-press input mould
Block (3), data memory module (4), pressure sensor module (5), waveform acquisition module (6), analog-digital converter (9) and wrist strap
(11)；It is characterized in that, structure also has high fidelity signals translation circuit (7), noise suppression circuit (8) and digital temperature sensor
(10)；
The display panel module (2), data memory module (4) are connected with microcontroller (1)；
The pressure sensor module (5) is the row rheostat array of pressure sensors of 8 rows × 16, is attached to wrist strap (11)
Inner side, wrist strap (11) are used to pressure sensor module (5) is fixed in the wrist of measured and makes pressure sensor module (5)
Cover the pulse area of measured；
The structure of the waveform acquisition module (6) is, 16 select 16 of an analog switch chip select input terminals respectively with
16 column address ends of pressure sensor module (5) are connected, and public output ground connection, control terminal is connected with microcontroller (1)；Eight choosings
8 selection input terminals of one analog switch chip are connected with 8 row address ends of pressure sensor module (5) respectively, public defeated
Go out to terminate the input terminal of high fidelity signals translation circuit, control terminal is connected with microcontroller (1)；
The structure of the high fidelity signals translation circuit (7) is that the inverting input of amplifier U1A is converted as high fidelity signals
The input terminal of circuit (7), is denoted as port PSensor, and eight select the public defeated of an analog switch chip in welding wave acquisition module (6)
Outlet, the inverting input of amplifier U1A and the indirect resistance R1 of output terminal, the in-phase input end of output termination amplifier U1B, amplifier
The inverting input of U1B and the indirect resistance R2 of output terminal, output terminal of the output terminal as high fidelity signals translation circuit (7),
Port RudePO is denoted as, connects the input terminal of noise suppression circuit (8)；A termination power VCC of slide rheostat W1, another termination
Ground, the in-phase input end of slip termination amplifier U1A and the in-phase input end of amplifier U2A, the anti-phase input terminating resistor of amplifier U2A
One end of R4, one end of resistance R5, one end of resistance R6, the other end ground connection of resistance R6, another termination amplifier U2A of resistance R4
Output terminal, one end of another termination slide rheostat W2 of resistance R5, the slip termination amplifier U1B's of slide rheostat W2 is anti-
Phase input terminal, one end of the output terminating resistor R3 of amplifier U2A, the inverting input of another termination amplifier U1B of resistance R3, fortune
The positive power source terminal for putting U1A and amplifier U2A all meets power supply VCC, and negative power end is all grounded；
The structure of the noise suppression circuit (8) is that the inverting input of amplifier U2B is connected with output terminal, in-phase input end
One end of connecting resistance R8 and one end of capacitance C1, the other end ground connection of capacitance C1, one end of another terminating resistor R7 of resistance R8
With one end of capacitance C2, the input terminal of the other end of resistance R7 as noise suppression circuit (8), is denoted as port RudePI, connects height
The output terminal of Fidelity signal translation circuit (7), the output terminal of another termination amplifier U2B of capacitance C2, the output termination of amplifier U2B
One end of resistance R9, one end of one end of another termination capacitor C3 of resistance R9, one end of resistance R10 and resistance R11, capacitance C3
Other end ground connection, the inverting input of another termination amplifier U3A of resistance R10 and one end of capacitance C4, resistance R11's is another
The in-phase input end ground connection of the output terminal amplifier U3A of another termination amplifier U3A of end and capacitance C4, positive supply termination power VCC,
Negative power end is grounded, and output terminal of the output terminal as noise suppression circuit (8), is denoted as port PO, connects the mould of analog-digital converter (9)
Intend signal input part；
The digital signal output end of the analog-digital converter (9) is connected with microcontroller (1).
2. a kind of design Chinese medicine pulse-taking system according to claim 1, it is characterised in that the button is defeated
Entering module (3) has power switch, start button, checks button.
A kind of 3. design Chinese medicine pulse-taking system according to claim 1 or 2, it is characterised in that the number
Word temperature sensor (10) is positioned over the central area of pressure sensor module (5), and output terminal is connected with microcontroller (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711314362.8A CN107997749A (en) | 2017-12-12 | 2017-12-12 | A kind of design Chinese medicine pulse-taking system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711314362.8A CN107997749A (en) | 2017-12-12 | 2017-12-12 | A kind of design Chinese medicine pulse-taking system |
Publications (1)
| Publication Number | Publication Date |
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| CN107997749A true CN107997749A (en) | 2018-05-08 |
Family
ID=62058146
Family Applications (1)
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|---|---|---|---|
| CN201711314362.8A Pending CN107997749A (en) | 2017-12-12 | 2017-12-12 | A kind of design Chinese medicine pulse-taking system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI672125B (en) * | 2018-07-05 | 2019-09-21 | 長庚大學 | Pulse sensing device |
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