CN106580273A - Pulse wave acquisition device and pulse wave acquisition calibration method - Google Patents

Abstract

The present invention provides a pulse wave acquisition device and a pulse wave acquisition calibration method, wherein the pulse wave acquisition device is used to acquire the pulse wave of the human body pulse detection place under different external pressures, and the pulse wave acquisition device includes: a fixed belt, a fixed The belt is used to wrap around the pulse detection part of the human body; the pressure regulating part, the first end of the pressure regulating part is connected with the fixing belt; the pulse sensor, the pulse sensor includes a sensing film, and the second end of the pressure regulating part is connected with the sensing film to connect the The sensing film is pressed against the pulse detection part of the human body, and the sensing film is used to convert the pulse wave into a piezoelectric signal, wherein the sensing film is made of a flexible material. The invention solves the problem that the pulse wave acquisition device in the prior art cannot accurately reflect the pulse condition information of the human body.

Description

Pulse wave acquisition device and pulse wave acquisition calibration method

technical field

The invention relates to the technical field of pulse wave acquisition, in particular to a pulse wave acquisition device and a pulse wave acquisition calibration method.

Background technique

TCM pulse diagnosis has experienced more than 2,000 years of clinical practice, and is one of the essence of the four diagnostic methods of traditional Chinese medicine in my country. The theory of traditional Chinese medicine believes that when the qi and blood of the viscera of the human body are diseased, the blood circulation will be affected, and the pulse condition will change. The traditional fingering method for pulse diagnosis is based on the "three fingers together" method of pulse diagnosis with the lower finger. It is mainly to understand the characteristics of the pulse condition and the change of the pulse condition with the change of applied pressure when the three parts of "cun, guan and chi" are lowered at the same time; Observe the similarity or difference of the three pulse charts of "Cun, Guan and Chi" under the same pressurized conditions; Diagnose the pulse under the three pressing pressures of ", Shen" respectively, and further compare and confirm the specificity of each part. The three-part nine-valve pulse diagnosis method can collect more abundant pulse information, fully develop the theoretical characteristics of traditional pulse science, and provide an important basis for clinical disease identification, syndrome differentiation and treatment.

In recent years, different pulse monitors have been developed at home and abroad to diagnose the patient's pulse instead of humans. It is impossible to simulate the three pressing pressures of "floating, middle and sinking" in traditional Chinese medicine, and in the process of collecting the pulse wave at the human pulse detection site, the pulse wave is often collected due to the sliding of the patient's blood vessel or the involuntary shaking of the patient's arm Ineffective, the important pulse wave information is lost, so that the complete information on the changes of human physiological functions cannot be obtained, and it is difficult to diagnose the patient's disease.

Contents of the invention

The main purpose of the present invention is to provide a pulse wave acquisition device and a pulse wave acquisition calibration method to solve the problem that the pulse wave acquisition device in the prior art cannot accurately reflect the pulse information of the human body.

In order to achieve the above object, according to one aspect of the present invention, a pulse wave acquisition device is provided, which is used to collect the pulse wave of the human body pulse detection station when it is subjected to different external pressures, including: a fixed belt, which is used to wrap around the human body Pulse detection part; pressure regulating part, the first end of the pressure regulating part is connected with the fixing belt; pulse sensor, the pulse sensor includes a sensing film, and the second end of the pressure regulating part is connected with the sensing film to press the sensing film against the human body At pulse detection, a sensing film is used to convert the pulse wave into a piezoelectric signal, wherein the sensing film is made of flexible material.

Further, the sensing film is a polyvinylidene fluoride film.

Further, the sensing film includes a connection support section and a pulse wave acquisition section connected to the connection support section, wherein there are multiple pulse wave acquisition sections, and the multiple pulse wave acquisition sections are arranged at intervals along the length direction of the connection support section.

Further, there are five pulse wave acquisition sections, and each pulse wave acquisition section is perpendicular to the connecting support section.

Further, the pulse sensor also includes: a sensing circuit, the sensing circuit is connected with the sensing film to transmit the piezoelectric signal; a signal processing unit, the signal processing unit is electrically connected with the sensing film through the sensing circuit and used for receiving and processing the piezoelectric signal Signal; signal display unit, the signal display unit is electrically connected with the signal processing unit and used to display the value of the piezoelectric signal.

Further, the pressure regulating part includes a pressure regulating air bag, which is arranged on the fixing belt, and the pressure regulating air bag has a cubic structure.

Further, the pressure regulating part also includes a pressure sensor, an air pump and a three-way structure, wherein the first port of the three-way structure communicates with the cavity of the pressure regulating air bag, the second port of the three-way structure communicates with the air pump, and the three-way structure communicates with the cavity of the air bag. The third port communicates with the pressure sensor.

According to another aspect of the present invention, a pulse wave acquisition and calibration method is provided, including: step S1: adjust the external static pressure value at the human body pulse detection point to P through the pressure regulator; step S2: obtain the human body pulse detection through the pulse sensor The pulse wave at the place acts on the sensing film of the pulse sensor to generate the amplitude X corresponding to the external static pressure value P; An electric signal value U is used as the ordinate and the abscissa, and a plurality of amplitude pressure points B are calibrated in the two-dimensional coordinate system; Step S4: Draw the amplitude pressure curve of the pulse wave through the plurality of amplitude pressure points B.

Further, the external static pressure value P satisfies the formula: P=n×ΔP, where ΔP is the amount of pressure increase each time, and n is the number of pressure increases.

Further, ΔP is greater than or equal to 5 mmHg and less than or equal to 30 mmHg.

Further, step S2 includes: step S21: measure the piezoelectric signal value U corresponding to the external static pressure value P generated by the pulse wave sensor at the pulse detection point of the human body acting on the sensing film of the pulse sensor; step S22 : The amplitude X of the pulse wave is obtained by calculating the value U of the piezoelectric signal.

Further, the piezoelectric signal value U and amplitude X satisfy the formula: Among them, g _3n is the piezoelectric coefficient of the sensing film, and t is the thickness of the sensing film.

Further, before the step S1, a step S0 is also included: installing the pulse wave acquisition device on the pulse detection place of the human body.

Applying the technical solution of the present invention, since the pulse wave acquisition device includes a fixed belt used to wrap around the pulse detection part of the human body, medical workers can wrap the fixed belt around the pulse of the human body, thereby improving the relationship between the pulse wave acquisition device and the human body. connection stability.

Because the pulse wave acquisition device includes a pressure regulating part and a pulse sensor, the first end of the pressure regulating part is connected with the fixing belt, the pulse sensor includes a sensing film, and the second end of the pressure regulating part is connected with the sensing film to press the sensing film Close to the detection of the human body pulse, the sensing film is used to convert the pulse wave into a piezoelectric signal, wherein the sensing film is made of flexible materials. In this way, the pressure regulating part can provide effective extrusion force for the sensing film by being squeezed between the fixing belt and the human body pulse detection part, so that the sensing film can be effectively attached to the human body pulse detection part, and then the sensing film can It can comprehensively collect the pulse wave of the human body pulse detection, not only that, because the sensing film is made of flexible materials, the sensing film can undergo reciprocating deformation movement with the pulse of the human body, so the sensing film can accurately measure the human body The pulse wave generated by the pulse detection part is converted into a piezoelectric signal. Through the processing and analysis of the external pressure applied to the human body pulse detection part by the pressure adjustment part and the piezoelectric signal, the amplitude pressure curve can be obtained, thus accurately reflecting the human body's Pulse information.

Description of drawings

The accompanying drawings constituting a part of the present application are used to provide a further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the attached picture:

Fig. 1 shows a schematic diagram of an exploded structure of a pulse wave acquisition device at a human body pulse detection site according to an optional embodiment of the present invention;

Fig. 2 shows a schematic diagram of an exploded structure from another perspective of the pulse wave acquisition device in Fig. 1;

Fig. 3 shows a schematic structural view of the sensing film of the pulse wave acquisition device in Fig. 1;

Fig. 4 shows a schematic structural view of a fixed belt with a pressure regulating air bag of the pulse wave acquisition device in Fig. 1;

Fig. 5 shows the amplitude pressure curve of the pulse wave at the human body pulse detection site obtained by using the pulse wave acquisition and calibration method in an optional embodiment of the present invention.

Wherein, the above-mentioned accompanying drawings include the following reference signs:

1. Human pulse detection part; 10. Fixing belt; 20. Pressure adjustment part; 21. Regulating air bag; 30. Pressure transmission part; 40. Pulse sensor; 41. Sensing film; 411. Connecting support section; 412. Pulse wave Collection section; 413, collection section on inch; 414, collection section on inch; 415, collection section off; 416, collection section on foot; 417, collection section below foot.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and/or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and/or combinations thereof.

The relative arrangements of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. At the same time, it should be understood that, for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the Authorized Specification. In all examples shown and discussed herein, any specific values should be construed as exemplary only, and not as limitations. Therefore, other examples of the exemplary embodiment may have different values. It should be noted that like numerals and letters denote like items in the following figures, therefore, once an item is defined in one figure, it does not require further discussion in subsequent figures.

In the description of the present invention, it should be understood that orientation words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" etc. indicate the orientation Or positional relationship is generally based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description. In the absence of a contrary description, these orientation words do not indicate or imply the device or element referred to. It must have a specific orientation or be constructed and operated in a specific orientation, so it should not be construed as limiting the protection scope of the present invention; the orientation words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

For the convenience of description, spatially relative terms may be used here, such as "on ...", "over ...", "on the surface of ...", "above", etc., to describe the The spatial positional relationship between one device or feature shown and other devices or features. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, devices described as "above" or "above" other devices or configurations would then be oriented "beneath" or "above" the other devices or configurations. under other devices or configurations". Thus, the exemplary term "above" can encompass both an orientation of "above" and "beneath". The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptions used herein interpreted accordingly.

In addition, it should be noted that the use of words such as "first" and "second" to define parts is only for the convenience of distinguishing corresponding parts. To limit the protection scope of the present invention.

In order to solve the problem that the pulse wave acquisition device in the prior art cannot accurately reflect the pulse information of the human body, the present invention provides a pulse wave acquisition device and a pulse wave acquisition calibration method, wherein, the above-mentioned pulse wave acquisition device uses The above-mentioned pulse wave acquisition and calibration method can obtain the amplitude pressure curve of the pulse wave at the pulse detection place of the human body. The above-mentioned pulse wave acquisition and calibration method is not limited to the use of the above-mentioned pulse wave acquisition device. The pulse wave acquisition device is the following pulse wave Wave acquisition device.

As shown in Figures 1 to 4, the pulse wave acquisition device is used to collect the pulse wave of the human body pulse detection part 1 when it is subjected to different external pressures. The belt 10 is used to wrap around the pulse detection part 1 of the human body, the first end of the pressure regulating part 20 is connected with the fixed belt 10, the pulse sensor 40 includes a sensing film 41, and the second end of the pressure regulating part 20 is connected with the sensing film 41 to The sensing film 41 is pressed against the pulse detection site 1 of the human body, and the sensing film 41 is used to convert the pulse wave into a piezoelectric signal, wherein the sensing film 41 is made of flexible material.

Since the pulse wave acquisition device includes a fixed belt 10 for wrapping around the pulse detection part 1 of the human body, the medical staff can wrap the fixed belt 10 around the pulse of the human body, thereby improving the connection stability between the pulse wave acquisition device and the human body sex.

Since the pulse wave acquisition device includes a pressure regulator 20 and a pulse sensor 40, the first end of the pressure regulator 20 is connected to the fixing belt 10, the pulse sensor 40 includes a sensing membrane 41, and the second end of the pressure regulator 20 is connected to the sensing membrane. 41 is connected to press the sensing film 41 against the pulse detection part 1 of the human body, and the sensing film 41 is used to convert the pulse wave into a piezoelectric signal, wherein the sensing film 41 is made of a flexible material. In this way, the pressure regulating part 20 can provide effective squeezing force for the sensing film 41 by squeezing between the fixing belt 10 and the human body pulse detection part 1, so that the sensing film 41 and the human body pulse detection part 1 can be effectively adhered to , so that the sensing film 41 can fully collect the pulse wave at the human body pulse detection site 1, not only that, because the sensing film 41 is made of flexible material, the sensing film 41 can undergo reciprocating deformation movement along with the human pulse, Therefore, the sensing film 41 can accurately convert the pulse wave generated by the human body pulse detection part 1 into a piezoelectric signal, and by processing and analyzing the external pressure and the piezoelectric signal applied to the human body pulse detection part 1 by the pressure regulator 20, it can The amplitude pressure curve is obtained, so as to accurately reflect the pulse information of the human body.

As shown in FIG. 2 , the pulse wave acquisition device further includes a pressure transmission part 30 , and the second end of the pressure adjustment part 20 is connected to the sensing film 41 through the pressure transmission part 30 .

Since the pulse wave acquisition device includes a pressure transmission part 30 , the second end of the pressure adjustment part 20 is connected to the sensing film 41 through the pressure transmission part 30 . In this way, the pressure transmitting part 30 is arranged between the pressure regulating part 20 and the sensing film 41, ensuring that the extrusion force generated by the pressure regulating part 20 is evenly transmitted to the surface of the sensing film 41, so that the sensing film 41 It is sufficiently close to the human body pulse detection part 1, so that the pulse wave acquisition device can reliably collect the pulse wave from the human body pulse detection part 1.

Optionally, the sensing film 41 is a polyvinylidene fluoride film. Namely PVDF membrane. When the sensing film 41 made of polyvinylidene fluoride is used to be attached to the human body pulse detection part 1, the contact area between the pulse wave acquisition device and the human body pulse detection part 1 is effectively increased, thereby ensuring that the pulse wave is collected During the process, the collection will not be caused by the movement of human blood vessels or the shaking of the hand, and the measurement position will not be deviated, so that the pulse wave data can be collected more stably and objectively.

As shown in Figures 1 to 3, the sensing film 41 includes a connection support section 411 and a pulse wave acquisition section 412 connected to the connection support section 411, wherein there are multiple pulse wave acquisition sections 412, and a plurality of pulse wave acquisition sections 412 are arranged at intervals along the length direction of the connecting support section 411 . In this way, a plurality of pulse wave acquisition sections 412 are used as sensors to acquire pulse waves at different points in the human body pulse detection place 1, and it is ensured that the plurality of pulse wave acquisition sections 412 do not interfere with each other, thereby improving the pulse wave acquisition device. Reliable stability for pulse wave acquisition.

As shown in FIG. 3 , there are five pulse wave acquisition sections 412 , and each pulse wave acquisition section 412 is perpendicular to the connecting support section 411 .

Optionally, as shown in FIG. 1 , the human body pulse detection location 1 is a human wrist.

The five pulse wave collection sections 412 are respectively an upper-inch collection section 413, an inch collection section 414, a close collection section 415, a chi collection section 416 and a chi-down collection section 417, which are respectively used to collect the above-inch, inch, and close sections at the wrist of the human body. , ruler, and pulse wave information at the five places below the ruler.

It should be noted that when using the pulse wave acquisition device, the connecting support section 411 is arranged along the direction of the human wrist, and at the same time, each pulse wave acquisition section 412 is arranged perpendicular to the direction of the human wrist, thus ensuring that each pulse wave acquisition section 412 can Fully simulates a human finger.

Optionally, the pressure transmission part 30 is made of flexible material, and the pressure transmission part 30 is provided with a mesh structure. In this way, the pressure transmission part 30 can absorb the vibration potential energy transmitted outward by the pulse wave collection section 412, avoiding the vibration of the pulse wave collection section 412 from affecting the pulse wave collection section 412 adjacent to it, and ensuring that the sensor film 41 collects Validity of pulse wave information. Moreover, the pressure transmission part 30 that is provided with a mesh structure and is made of a flexible material can reliably adapt to the movement of the sensing film 41 and deform, thereby reliably reflecting the deformation of the sensing film 41 and making the sensing film The piezoelectric signal generated at 41 is clearer.

Optionally, the pressure transmission part 30 is one of rubber, silicone or sponge.

In an optional embodiment not shown in the present invention, the pulse sensor 40 also includes a sensing circuit, a signal processing unit and a signal display unit, the sensing circuit is connected to the sensing film 41 to transmit piezoelectric signals, and the signal processing unit The sensing circuit is electrically connected with the sensing film 41 and used for receiving and processing the piezoelectric signal, and the signal display unit is electrically connected with the signal processing unit and used for displaying the value of the piezoelectric signal.

As shown in FIG. 1 , FIG. 2 and FIG. 4 , the pressure regulating part 20 includes a pressure regulating airbag 21 disposed on the fixing belt 10 , and the pressure regulating airbag 21 has a cubic structure. In this way, when the air is inflated into the pressure regulating airbag 21, the surface of the pressure regulating airbag 21 facing the sensing membrane 41 will move as a whole, thereby ensuring that the surface of the pressure regulating airbag 21 facing the sensing membrane 41 will transmit the entire The sensing film 41 is pressed tightly so that the stress at each point of the sensing film 41 is uniform.

Optionally, the pressure regulating air bag 21 is made of silica gel.

The fixing belt 10 is wound around the human body pulse detection site 1 and connected by connecting devices arranged at both ends of the fixing belt 10 in the length direction.

Optionally, the connecting device is a nylon buckle provided at both ends of the fixing belt 10 in the length direction.

In another unillustrated optional embodiment of the present invention, the pressure regulating part 20 further includes a pressure sensor, an air pump and a three-way structure, wherein the first port of the three-way structure communicates with the cavity of the pressure regulating airbag 21, The second port of the three-way structure communicates with the air pump, and the third port of the three-way structure communicates with the pressure sensor. In this way, the pressure regulating airbag 21 is inflated by the air pump, and the pressure sensor can detect the air pressure in the pressure regulating airbag 21, so that the external static pressure value P of the human pulse detection site 1 is obtained.

The pulse wave acquisition and calibration method includes step S1, step S2, step S3 and step S4, wherein, step S1 is: adjust the external static pressure value of the human body pulse detection site 1 to P through the pressure adjustment part 20; step S2 is: through the pulse wave The sensor 40 obtains the amplitude X corresponding to the external static pressure value P generated by the pulse wave acting on the sensing film 41 of the pulse sensor 40 at the human body pulse detection site 1; A plurality of electrical signal values U corresponding to a plurality of amplitudes X are used as ordinates and abscissas, and a plurality of amplitude pressure points B are calibrated in a two-dimensional coordinate system; step S4 is: drawing through a plurality of amplitude pressure points B Output the amplitude pressure curve of the pulse wave.

Fig. 5 shows a pulse wave amplitude pressure curve at a human body pulse detection site obtained according to the above pulse wave acquisition and calibration method in an optional embodiment. In the coordinate system shown in the figure, the axis of abscissa is the external static pressure value P of the human body pulse detection point 1, and the axis of ordinate is the amplitude X corresponding to the value P of the external static pressure. In traditional Chinese medicine, the pulse condition of the human body can be identified through the movement trend of the amplitude pressure curve, such as floating pulse, sinking pulse or sputum pulse, thus providing an effective diagnostic basis for doctors in diagnosing patients' diseases.

As shown in Figure 5, the curve A1, curve A2, curve A3, curve A4 and curve A5 in the figure correspond to the collection section 413 on the inch, the collection section 414 on the inch, the collection section 415 off, the collection section 416 from the foot and the collection section under the foot respectively The 417 measures and converts the amplitude pressure curve, which reflects the pulse information of the five places on the human wrist, Cun Shang, Cun, Guan, Chi, and Chi Xia.

It should be noted that the P value satisfies the formula: P=n×ΔP, where ΔP is the amount of pressure increase each time, and n is the number of pressure increases. In this way, the external static pressure value of the human body pulse detection site 1 is adjusted to P by the pressure regulator 20, the external static pressure value P increases from zero, and the abscissa point is calibrated with ΔP as the increment.

Optionally, ΔP is greater than or equal to 5mmHg and less than or equal to 30mmHg.

The step S2 of the pulse wave acquisition and calibration method includes: step S21 and step S22, wherein, step S21 is: the pulse wave of the human body pulse detection point 1 is measured by the pulse sensor 40 and acts on the sensing film 41 of the pulse sensor 40. The piezoelectric signal value U corresponding to the external static pressure value P; step S22 is: calculate the amplitude X of the pulse wave through the piezoelectric signal value U.

In this way, the amplitude X of the pulse wave can be reliably calculated by the piezoelectric signal value U generated and measured on the sensing film 41, and thus the ordinate point corresponding to the abscissa point is obtained through calibration. The multiple amplitude pressure points B in FIG. 5 can be drawn by combining the ordinate points and the multiple amplitude pressure points B, and the amplitude pressure curve of the pulse wave can be obtained accurately by connecting the multiple amplitude pressure points B.

Optionally, the piezoelectric signal value U and amplitude X satisfy the formula: Wherein, g _3n is the piezoelectric coefficient of the sensing film 41 , and t is the thickness of the sensing film 41 .

It should be noted that before the step S1, a step S0 is also included: installing the pulse wave acquisition device on the human body pulse detection site 1 .

From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects: .

1. Compared with the ordinary strain gauge pulse sensor, the sensing film can greatly increase the area covered by the human pulse. In the process of collecting pulse waves, it will not deviate from the measurement due to the movement of human blood vessels or the shaking of human hands. location, more stable and objective collection of pulse wave data;

2. Due to the setting of the pressure transmission part, the vibration crosstalk between the pulse wave acquisition sections is extremely low, making the collected pulse wave data more objective and real;

3. Due to the use of the pressure regulating part to pressurize, the floating and sinking of the blood vessels at the wrist of the human body is evenly stressed, ensuring the authenticity and reliability of the pulse waves collected at different positions;

4. By using the pulse wave acquisition device or the pulse wave acquisition calibration method of the present invention, it is possible to objectively reflect the pulse condition information at the pulse detection point of the human body, and to conveniently control the pressurized range by pressurizing the regulating part, and to locate, float, center, and sink;

5. The structure of the pulse wave acquisition device of the present invention is compact and light, and is convenient to carry.

It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and/or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and/or combinations thereof.

It should be noted that the terms "first" and "second" in the description and claims of the present application and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein can be practiced in sequences other than those illustrated or described herein.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (13)

1. a kind of pulse wave harvester, for gathering the pulse wave of (1) when by different external pressures at human pulse detection, its It is characterised by, including：

Fixing band (10), the fixing band (10) is for being wrapped at the human pulse detection (1)；

Pressure regulating part (20), the first end of the pressure regulating part (20) are connected with the fixing band (10)；

Pulse transducer (40), the pulse transducer (40) include sense film (41), the of the pressure regulating part (20) Two ends are connected with the sense film (41) so that the sense film (41) is compressed at the human pulse detection (1), described Sense film (41) for the pulse wave is converted into piezoelectric signal, wherein, the sense film (41) is by flexible material system Into.

2. pulse wave harvester according to claim 1, it is characterised in that the sense film (41) is polyvinylidene fluoride Alkene film.

3. pulse wave harvester according to claim 1, it is characterised in that the sense film (41) includes connection Support section (411) and the pulse wave capture segment (412) being connected with connection supporting section (411), wherein, the pulse wave collection Section (412) is multiple, and multiple pulse wave capture segments (412) are set along the length direction interval of connection supporting section (411) Put.

4. pulse wave harvester according to claim 3, it is characterised in that the pulse wave capture segment (412) is five Individual, each pulse wave capture segment (412) is perpendicular with connection supporting section (411).

5. pulse wave harvester according to claim 1, it is characterised in that the pulse transducer (40) also includes：

Sensing circuit, the sensing circuit are connected to transmit the piezoelectric signal with the sense film (41)；

Signal processing unit, the signal processing unit are electrically connected with the sense film (41) by the sensing circuit and are used in combination In receiving and process the piezoelectric signal；

Signal display unit, the signal display unit are electrically connected with the signal processing unit and are used to show the piezoelectricity letter Number numerical value.

6. pulse wave harvester according to claim 1, it is characterised in that the pressure regulating part (20) is including pressure Air bag (21) is adjusted, the pressure regulating balloon (21) is arranged in the fixing band (10), and the pressure regulating balloon (21) in cube structure.

7. pulse wave harvester according to claim 6, it is characterised in that the pressure regulating part (20) also includes pressure Force transducer, air pump and three-port structure, wherein, the capsule of the first port of the three-port structure and the pressure regulating balloon (21) Chamber connects, and the second port of the three-port structure is connected with the air pump, the 3rd port and the pressure of the three-port structure Sensor is connected.

8. a kind of pulse wave gathers scaling method, it is characterised in that include：

Step S1：The external static pressure value of (1) at human pulse detection is adjusted to P by pressure regulating part (20)；

Step S2：The pulse wave that (1) at the human pulse detection is obtained by pulse transducer (40) acts on the pulse Amplitude X corresponding with the external static pressure value P produced on the sense film (41) of sensor (40)；

Step S3：Respectively using multiple amplitudes X and multiple value of electrical signals U corresponding with multiple amplitudes X as vertical seat Mark and abscissa, calibrate multiple amplitudes pressure spot B in two-dimensional coordinate system；

Step S4：The amplitude pressure curve of the pulse wave is drawn out by multiple amplitude pressure spot B.

9. pulse wave according to claim 8 gathers scaling method, it is characterised in that the external static pressure value P is full Sufficient formula：P=n × Δ P, wherein, Δ P is each pressure gain, and n is the number of times that pressure increases.

10. pulse wave according to claim 9 gathers scaling method, it is characterised in that the Δ P is more than or equal to 5mmHg And it is less than or equal to 30mmHg.

11. pulse waves according to claim 8 gather scaling method, it is characterised in that step S2 includes：

Step S21：The pulse wave that (1) at the human pulse detection is measured by the pulse transducer (40) acts on described The piezoelectric signal value corresponding with the external static pressure value P produced on the sense film (41) of pulse transducer (40) U；

Step S22：Amplitude X of the pulse wave is calculated by piezoelectric signal value U.

12. pulse waves according to claim 11 gather scaling method, it is characterised in that piezoelectric signal value U and institute State amplitude X and meet formula：Wherein, g_3nFor the piezoelectric moduluses of the sense film (41), t is the sense film (41) thickness.

13. pulse waves according to claim 8 gather scaling method, it is characterised in that before step S1, also wrap Include step S0：Pulse wave harvester is installed to into (1) at human pulse detection.