CN211270698U - Flexible pulse sensor - Google Patents
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- CN211270698U CN211270698U CN201920786491.5U CN201920786491U CN211270698U CN 211270698 U CN211270698 U CN 211270698U CN 201920786491 U CN201920786491 U CN 201920786491U CN 211270698 U CN211270698 U CN 211270698U
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Abstract
The utility model discloses a flexible pulse sensor, this sensor include from bottom to top fold the flexible conductive substrate, flexible sensitive layer and the sensing layer of establishing in proper order, flexible sensitive layer includes the three finger electrodes that are used for getting the arteries and veins that the interval set up side by side, three finger electrodes are corresponding to in traditional chinese medical science cun respectively, are close, the three position of getting the arteries and veins of chi. The flexible pulse sensor of the utility model collects the pulse signals at the radial artery of the wrist part of the human body by setting three finger electrodes to simulate the cun, guan and chi pulse taking positions in the traditional Chinese medicine pulse diagnosis and judges the physiological health of the human body by analyzing the pulse signals at the radial artery, thereby improving the objectivity of the traditional Chinese medicine pulse diagnosis; the pulse is taken from the cun, guan and chi parts of the radial artery at the same time, so that the detection sensitivity of the pulse signal of the human body is greatly improved. The sensor has the advantages of simple structure, light texture, low possibility of falling off, low manufacturing cost, simple operation and stable and reliable detection result.
Description
Technical Field
The utility model belongs to the technical field of the sensor, especially, relate to a flexible pulse sensor.
Background
The pulse condition, i.e. the signs of the pulsation rhythm of the human artery, such as rapid, slow, large, strong, weak, deep, floating, deficient and excessive, is regarded as a life language by traditional Chinese medicine because of the abundant health condition information, and is therefore more and more emphasized by the Chinese and foreign medical field. The comprehensive information of waveform, wave amplitude, wave speed, period and the like presented by the pulse wave reflects many blood flow characteristics in the cardiovascular system of the human body to a great extent.
At present, some reports exist on wearable medical fabrics used for monitoring physiological signals at home and abroad, such as a life shirt developed by the American Vivometrics company, which can reflect the breathing condition of a wearer and record the body position change of a human body, but the wearable medical fabrics are poor in wearability, complex to operate and not suitable for being used in daily life and work; the MiliorofPrado company in Italy combines an intelligent sensor in the form of fiber or yarn with a fabric technology and the like to monitor the respiration and the body temperature, but the price is high, the wearing comfort in daily life is not good, and the practicability is influenced; the T-shirt with the sensing function developed by FraunhoferZM in Germany can realize the detection of the electrocardio-physiological parameters of a wearer, but the skin ulceration can be caused by long-term contact with the skin. Other instruments for pulse detection in the prior art also have the problems of complex operation, high cost, inconvenience in carrying, incapability of meeting daily monitoring requirements, poor biocompatibility, uncomfortable wearing and the like.
The human artery blood vessel appears the periodic pulsation phenomenon along with the shrink and the expansion of heart, because the pulse wave starts from the heart, through artery reflection and influence such as vascular resistance, liquid viscosity at different levels physiological factor, consequently contained multiple human health parameter in the pulse signal, such as blood pressure heartbeat, can reflect abundant cardiovascular system physiology and pathology information through the pulse diagnosis. The physician initially selects a thorough examination of all the arteries of the head, hands and feet, which is time-consuming. Zhang Zhongjing proposes three diagnostic methods, which are to diagnose three pulses of welcome, cun kou and fuyang. The cunkou is located at the original point of the lung channel of hand taiyin, and is the great meeting of the pulse, while the lung faces to the heart, and the qi and blood circulation of the twelve main meridians of the five zang-organs and six fu-organs starts and ends at the lung, so the cunkou can reflect the pathological changes of qi and blood of the twelve main meridians of the five zang-organs and six fu-organs. On the other hand, the lung meridian of hand taiyin originates from the middle energizer, belongs to taiyin with the spleen, and communicates with spleen qi, which is the acquired root and the source of qi and blood generation, so the abundance or insufficiency of qi and blood of zang-fu organs can be reflected in cunkou. Therefore, the pulse-taking is more accurate than other diagnosis methods.
However, most of the experiences of the cun-kou pulse diagnosis in traditional Chinese medicine are reported by doctors' dictations or qualitative records for thousands of years, and there are few quantitative expressions or classifications, and the acquisition of the pulse condition information is also often that the doctors press the radial artery of the patients through fingers to acquire the pulse condition information of the patients so as to judge the state of the patients. This brings inconvenience to the determination, transmission and storage of the pulse condition information of the patient, because the opinions of different doctors on the pulse condition of the same patient are different or even greatly different, and the opinions are obtained only by personal experience, which is highly subjective and difficult to be supported by quantitative data. Furthermore, such perceived information cannot be expressed objectively. Modern medicine increasingly attaches importance to quantitative and objective research, and traditional Chinese medicine pulse diagnosis only by taking pulse feeling of doctors is hardly accepted by western medicine, and even more, the traditional Chinese medicine pulse diagnosis cannot be advanced to international level. Therefore, how to make the pulse-taking technique of traditional Chinese medicine more objective and quantitative by combining various new techniques of modern science and technology on the basis of the research of the whole concept and treatment by syndrome differentiation of the pulse-taking of traditional Chinese medicine is a difficult task of the pulse-taking research of traditional Chinese medicine which is heavy and far-reaching.
Research shows that the mechanical structure of the traditional Chinese medicine pulse detection system is mainly a wrist strap type structure, and the structure can cause the blocking of pulse fluctuation when being higher than a certain pressure value, so that the traditional Chinese medicine pulse diagnosis idea of 'floating, sinking and floating' can not be really restored. In addition, the existing commodity mostly takes a single-point pulse wave sensor as a main part, the single-point structure of the sensor cannot reflect the theoretical viewpoint of 'inch-pass rule' in traditional Chinese medicine, and a user needs to keep a stable and calm state when measuring, so that the sensor has great requirements on the use environment, and the application and popularization of the sensor are limited. Secondly, most of the traditional Chinese medicine pulse diagnosis instruments in the market are large in size and high in price, the limitation of diseases and non-diseases needs to be judged by combining with the professional knowledge of doctors, and the traditional Chinese medicine pulse diagnosis instruments are only suitable for being used in large hospitals, cannot be popularized to common people and cannot meet market requirements. Therefore, it is important to develop a popular, scientific and convenient pulse monitoring tool.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a flexible pulse sensor to the not enough that exists among the prior art.
In order to achieve the above object, the utility model adopts the following technical scheme:
the utility model provides a flexible pulse sensor, includes flexible electrically conductive basement, flexible sensitive layer and the sensing layer of stacking in proper order from bottom to top, three finger electrodes that are used for getting the arteries and veins that flexible sensitive layer set up side by side including the interval, three finger electrodes are corresponding to in traditional chinese medical science cun respectively, are closed, the three position of getting the arteries and veins of chi.
Preferably, the flexible sensitive layer is divided into an upper layer and a lower layer, the upper layer is a flexible conductive layer, the lower layer is a flexible insulating layer, and the upper layer and the lower layer are bonded together; the insulating layer is attached to the flexible conductive substrate, and the sensing layer is attached to the upper portion of the flexible conductive layer in a covering mode.
Preferably, the flexible sensitive layer is provided with a plurality of holes, the holes are positioned on the contact surface of the three-finger electrode and the flexible conductive substrate, and the sensing layer conducts the flexible conductive substrate and the flexible sensitive layer through the plurality of holes arranged on the flexible sensitive layer.
When the forefinger, the middle finger and the ring finger of a person respectively act on the three-finger electrodes by pressing the flexible substrate electrodes, the sensing layer is tightly attached to the conductive layer of the flexible sensing layer, meanwhile, the sensing layer is tightly attached to the flexible substrate through a plurality of holes, and at the moment, the sensing layer is used as a lead to conduct the flexible substrate and the flexible sensing layer; the sensing layer can deform under the action force of finger pressing and pulse jumping, and simultaneously the impedance of the sensing layer can change, so that a human pulse signal can be obtained by measuring a current-time curve of the sensor.
Preferably, the holes are identical in shape and are equidistantly arranged.
In the utility model, a plurality of holes are through holes, and in a non-working state, the flexible conductive substrate and the flexible sensitive layer are in a non-conduction state; when the flexible conductive substrate is used for pulse testing, the holes distributed on the flexible sensitive layer are used as leads to conduct the flexible conductive substrate and the flexible sensitive layer by pressing the sensing layer.
Preferably, the aperture of the plurality of holes is 0.1mm to 30 mm.
Preferably, the edges of the flexible conductive substrate and the three-finger electrode extend outwards to form a first electrode and a second electrode respectively.
When in pulse test, the first electrode is used as a counter electrode, the three second electrodes are used as working electrodes together and are connected with an electrochemical workstation to carry out current-time curve scanning, the human pulse frequency can be calculated through the frequency of the current-time curve, and the intensity of the human pulse can be deduced through the current peak intensity.
Preferably, the flexible conductive substrate and the three-finger electrode are in a shape with the width gradually increased in a stepped manner. On one hand, the flexible pulse sensor is convenient to connect with an electrochemical workstation during testing, and meanwhile, the material can be saved, and the phenomenon that the flexible conductive substrate is conducted with the three-finger electrode in a non-working state to reduce the service life of the flexible pulse sensor is avoided.
Preferably, the flexible conductive substrate and the flexible conductive layer are fiber cloth plated with nano silver wires.
Preferably, the sensing layer is one of conductive fiber cloth, conductive rubber or conductive sponge.
Preferably, the flexible insulating layer is a polymer film composed of at least one component selected from polyvinyl alcohol, polyester, nylon, acrylate, epoxy and polyurethane.
The utility model discloses in, the thickness of flexible conductive substrate, flexible conducting layer, flexible insulating layer is 0.05 ~ 10mm, has good ductility, antifriction, corrosion resistance and weatherability, and the cost is lower, easily promotes to popularize, has higher market perspective.
Preferably, the area of the flexible pulse sensor is 6-8 square centimeters, and the shape of the flexible pulse sensor is square, circular or oval.
The utility model relates to a pulse test method of flexible pulse sensor does: and respectively connecting a first electrode and a second electrode of the pulse sensor to a counter electrode and a working electrode of an electrochemical workstation, attaching the sensing layer to the wrist of a human body, respectively pressing the index finger, the middle finger and the ring finger on the three-finger electrodes, applying 0.5V voltage to the sensor, and testing the time-current curve of the sensor.
The flexible pulse sensor of the utility model is a piezoresistive sensor, and when the sensing layer is under the action of constant pressure, stable current can be generated; when a human body pulse beats, a certain acting force is generated on the sensing layer, so that the resistance value of the sensor is changed, and further, the current-time curve is changed. The human pulse signal is detected according to the frequency, peak intensity and phase of the current-curve and the phase difference of the three-finger electrodes, so that the human pulse rate condition is indirectly reflected.
Compared with the prior art, the beneficial effects of the utility model reside in that:
(1) the flexible pulse sensor of the utility model collects the pulse signals at the radial artery of the wrist part of the human body by setting three finger electrodes to simulate the cun, guan and chi pulse taking positions in the traditional Chinese medicine pulse diagnosis and judges the physiological health of the human body by analyzing the pulse signals at the radial artery, thereby improving the objectivity of the traditional Chinese medicine pulse diagnosis; the pulse is taken from the cun, guan and chi parts of the radial artery at the same time, so that the detection sensitivity of the pulse signal of the human body is greatly improved.
(2) The utility model discloses in using the flexible pressure sensor technique with electrically conductive cloth technique, make flexible pressure sensor simple structure, feel light, be difficult for droing, and the volume is less, the cost of manufacture is low, easy operation, and testing result reliable and stable.
(3) The utility model discloses be connected flexible conductive substrate and three finger electrodes as counter electrode, working electrode and electrochemistry workstation respectively, act on flexible conductive substrate upper portion through human forefinger, well finger, ring finger and correspond three finger electrode cun, close, the three position of getting the pulse of chi respectively, three finger electrodes can be fast pinpointed and get the pulse point, realize human pulse signal's short-term test through the electric current-time curve of test flexible sensor, have the advantage that detects fast, accurate.
(4) The utility model discloses flexible pulse sensor not only can be used to human pulse signal's short-term test, provides guide information for the diagnosis, treatment and the prevention of human emergency, also can be applied to flexible wearable equipment simultaneously, realizes human vital sign's real-time supervision.
(5) Flexible conductive substrate, flexible conducting layer, flexible insulating layer have good ductility, antifriction, corrosion resistance and weatherability, and the cost is lower, easily promote the popularization, have higher market perspective.
Drawings
Fig. 1 is a schematic structural view of the flexible pulse sensor of the present invention.
Fig. 2 is an exploded view of fig. 1.
Fig. 3 is a cross-sectional view of fig. 1.
FIG. 4 is the current-time curve result of the electrode corresponding to the cun pulse-taking position in TCM in the three-finger electrode.
FIG. 5 shows the results of the current-time curves measured at the electrodes corresponding to the guan-pulse region in TCM.
FIG. 6 shows the current-time curve of the electrode corresponding to the midrib pulse taking position in TCM in the three-finger electrode.
In the figure: 1. a flexible conductive substrate; 101. a first electrode; 2. a flexible sensitive layer; 201. a flexible conductive layer; 202. a flexible insulating layer; 203. an aperture; 204. a second electrode; 3. a sensing layer.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
The present invention will be described in further detail below with reference to specific embodiments and with reference to the accompanying drawings.
Examples
As shown in fig. 1-3, a flexible pulse sensor comprises a flexible conductive substrate 1, a flexible sensitive layer 2 and a sensing layer 3 which are sequentially stacked from bottom to top, wherein the flexible sensitive layer 2 comprises three finger electrodes which are arranged side by side at intervals and are used for taking pulse, and the three finger electrodes respectively correspond to three pulse taking positions of cun, guan and chi in traditional Chinese medicine.
Specifically, the flexible sensitive layer 2 is divided into an upper layer and a lower layer, the upper layer is a flexible conducting layer 201, the lower layer is a flexible insulating layer 202, and the upper layer and the lower layer are bonded together; the insulating layer is attached to the flexible conductive substrate 1, and the sensing layer 3 is attached to the upper portion of the flexible conductive layer 201 in a covering manner.
Specifically, a plurality of holes 203 are formed in the flexible sensitive layer 2, the holes 203 are located on the contact surface of the three-finger electrode and the flexible conductive substrate 1, and the sensing layer 3 conducts the flexible conductive substrate 1 and the flexible sensitive layer 2 through the plurality of holes 203 arranged on the flexible sensitive layer 2.
When the flexible sensing layer is used, when an index finger, a middle finger and a ring finger of a person act on the three-finger electrodes respectively by pressing the flexible substrate electrodes, the sensing layer 3 is tightly attached to the conductive layer of the flexible sensing layer 2, meanwhile, the sensing layer 3 is tightly attached to the flexible substrate through a plurality of holes 203, and at the moment, the sensing layer 3 serves as a lead to conduct the flexible substrate and the flexible sensing layer 2; the sensing layer 3 can deform under the action force of finger pressing and pulse jumping, and simultaneously the impedance of the sensing layer can change, so that a human pulse signal can be obtained by measuring a current-time curve of the sensor.
Specifically, the holes 203 are identical in shape and are arranged equidistantly, the hole diameter of each hole 203 is 0.1-30 mm, and the thickness of each hole is 0.05-10 mm.
Furthermore, the holes 203 are all through holes, and in a non-working state, the flexible conductive substrate 1 and the flexible sensitive layer 2 are in a non-conduction state due to the holes 203; when the flexible conductive substrate is used for pulse testing, the holes 203 arranged on the flexible sensitive layer 2 can be used as leads to conduct the flexible conductive substrate 1 and the flexible sensitive layer 2 by pressing the sensing layer 3.
Specifically, the edges of the flexible conductive substrate 1 and the three-finger electrode extend outwards to form the first electrode 101 and the second electrode 204, respectively.
During pulse testing, the first electrode 101 is used as a counter electrode, the three second electrodes 204 are used as working electrodes together and are connected with an electrochemical workstation to perform current-time curve scanning, the human pulse frequency can be calculated through the frequency of the current-time curve, and the intensity of the human pulse can be deduced through the current peak intensity.
Specifically, the flexible conductive substrate 1 and the three-finger electrode are in a shape with the width gradually increased in a stepped manner. On one hand, the flexible pulse sensor is convenient to connect with an electrochemical workstation during testing, meanwhile, the cloth can be saved, and the phenomenon that the flexible conductive substrate 1 is conducted with the three-finger electrode in a non-working state to reduce the service life of the flexible pulse sensor is avoided.
Specifically, the flexible conductive substrate 1 and the flexible conductive layer 201 are fiber cloth plated with nano silver wires.
Specifically, the sensing layer 3 is one of conductive fiber cloth, conductive rubber or conductive sponge; preferably a conductive fiber cloth.
Specifically, the flexible insulating layer 202 is a polymer film formed by at least one of polyvinyl alcohol, polyester, nylon, acrylate, epoxy, and polyurethane.
The thicknesses of the flexible conductive substrate 1, the flexible conductive layer 201 and the flexible insulating layer 202 are 0.05-10 mm.
Specifically, the area of the flexible pulse sensor is 6-8 square centimeters, and the flexible pulse sensor is square, circular or oval.
The pulse testing method of the flexible pulse sensor comprises the following steps: the first electrode 101 and the second electrode 204 of the pulse sensor are respectively connected to a counter electrode and a working electrode of an electrochemical workstation, the sensing layer 3 is attached to the wrist of a human body, the index finger, the middle finger and the ring finger respectively act on the cun position, the guan position and the chi pulse position of the three-finger electrode by pressing the flexible conductive substrate 1, 0.5V voltage is applied to the sensor, and the time-current curve of the sensor is tested.
Fig. 4-6 show the current-time curve results of the pulse position taken by the three finger electrodes, i.e. pulse frequency of 67-75 times/min, which shows that the pulse of the testee is at normal level, wherein the pulse period is 0.8-0.9 s.
Meanwhile, the intensity of the pulse peak of the tester is represented by the height of the current peak value in the current-time curve, which indicates the blood pumping function of the heart. If the pulse is weakened and the current amplitude is low, it indicates that the patient has a small stroke volume, a small pulse pressure or an increased peripheral resistance. At this point, the subject may be in a condition of weak pulse or shock.
From the results of fig. 4-6, it can be observed that 3 protrusions appear on each pulse cycle curve, which correspond to the three parts of ascending (tapping wave), peak (tidal wave) and descending (dicrotic wave) of the normal pulse wave. The intensity of the three pulses represents the intensity of the blood pumped by the heart of the testee. If the ascending branch occurs in the early stage of left ventricular systole, it is caused by the impact of left ventricular ejection on the aortic wall; the wave crest is also called tidal wave, appears in the middle and late contraction, and is caused by that part of blood runs towards the far end of the artery and reversely impacts the artery wall; the descending branch occurs when blood turns back from the periphery to the near end and then goes forward in the diastole of the ventricle, and the aorta wall is elastically retracted, so that the blood flow continuously flows to the peripheral artery.
Meanwhile, the results of the analysis of the figures 4-6 show that the phase differences in the current-time curves of the three pulse taking positions of the three finger electrodes, namely the size, the closing position and the size, are basically consistent, and the phase differences are small, which indicates that the blood fluency in the body of the testee is good. The blood fluency is related to the prediction of cardiovascular emergency of human body, and the smaller the phase difference is, the smoother the blood flow is, and the more complete the cardiovascular function is.
The above description is only an illustrative embodiment of the present invention, and is not intended to limit the present invention in any way and in any way, and it should be noted that, for those skilled in the art, various modifications and additions can be made without departing from the method of the present invention; those skilled in the art can make various changes, modifications and evolutions equivalent to those made by the above-disclosed technical content without departing from the spirit and scope of the present invention, and all such changes, modifications and evolutions are equivalent embodiments of the present invention; meanwhile, any changes, modifications and evolutions of equivalent changes to the above embodiments according to the essential technology of the present invention all still belong to the protection scope of the present invention.
Claims (11)
1. The utility model provides a flexible pulse sensor, its characterized in that includes flexible electrically conductive basement (1), flexible sensitive layer (2) and the sensing layer (3) of stacking in proper order from bottom to top, flexible sensitive layer (2) include the interval set up side by side be used for getting the three finger electrode of arteries and veins, three finger electrode is corresponding to in traditional chinese medical science cun, close, the three position of getting the arteries and veins of chi respectively.
2. The flexible pulse sensor according to claim 1, wherein the flexible sensitive layer (2) is divided into an upper layer and a lower layer, the upper layer is a flexible conductive layer (201), the lower layer is a flexible insulating layer (202), and the upper layer and the lower layer are bonded together; the insulating layer is attached to the flexible conductive substrate (1), and the sensing layer (3) is attached to the upper portion of the flexible conductive layer (201) in a covering mode.
3. The flexible pulse sensor according to claim 2, wherein the flexible sensing layer (2) is provided with a plurality of holes (203), the holes (203) are located on the contact surface of the three-finger electrode and the flexible conductive substrate (1), and the sensing layer (3) conducts the flexible conductive substrate (1) and the flexible sensing layer (2) through the plurality of holes (203) arranged on the flexible sensing layer (2).
4. A flexible pulse sensor according to claim 3, characterized in that several of said holes (203) are shaped identically and equidistantly.
5. The flexible pulse sensor of claim 4, wherein the plurality of holes (203) have a diameter of 0.1mm to 30 mm.
6. The flexible pulse sensor according to claim 1, wherein the edges of the flexible conductive substrate (1) and the three-finger electrodes extend outwards to form a first electrode (101) and a second electrode (204), respectively.
7. The flexible pulse sensor according to claim 6, wherein the flexible conductive substrate (1) and the three-finger electrode are in a shape with a width gradually increased in a stepwise manner.
8. The flexible pulse sensor according to claim 1 or 2, wherein the flexible conductive substrate (1) and the flexible conductive layer (201) are fiber cloth plated with nano silver wires.
9. A flexible pulse sensor according to claim 1 or 2, characterized in that the sensing layer (3) is one of a conductive fiber cloth, a conductive rubber or a conductive sponge.
10. The flexible pulse sensor of claim 2 wherein the flexible insulating layer (202) is a polymer film of at least one of polyvinyl alcohol, polyester, nylon, acrylate, epoxy, and polyurethane.
11. The flexible pulse sensor of claim 1 wherein the area of the flexible pulse sensor is 6-8 square centimeters and the flexible pulse sensor is square, circular or elliptical in shape.
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| CN201920786491.5U CN211270698U (en) | 2019-05-29 | 2019-05-29 | Flexible pulse sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110403581A (en) * | 2019-05-29 | 2019-11-05 | 武汉飞帛丝科技有限公司 | A kind of flexibility pulse transducer and its detection method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110403581A (en) * | 2019-05-29 | 2019-11-05 | 武汉飞帛丝科技有限公司 | A kind of flexibility pulse transducer and its detection method |
| CN110403581B (en) * | 2019-05-29 | 2024-08-06 | 武汉飞帛丝科技有限公司 | Flexible pulse sensor and detection method thereof |
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