CN112205970A - Array sensor and preparation method and application thereof - Google Patents
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- A—HUMAN NECESSITIES
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Abstract
The invention discloses an array sensor and a preparation method and application thereof, wherein the array sensor comprises a first flexible substrate and a second flexible substrate which are oppositely arranged and fixedly connected, wherein a finger inserting electrode array is fixed on one surface of the first flexible substrate facing the second flexible substrate, and a counter electrode is fixed on one surface of the second flexible substrate facing the first flexible substrate; the counter electrode is rectangular shape and corresponds and is located the middle part that inserts the finger of inserting finger electrode array, and each inserts finger portion including relative first finger portion and the second that sets up, each the leading-out terminal that inserts finger portion is one electrode leading-out terminal A of array sensor, each the leading-out terminal that the second inserted finger portion is one electrode leading-out terminal B of array sensor. The array sensor is applied as a pulse sensor for pulse diagnosis, and has the advantages of high sensitivity, high stability and the like.
Description
Technical Field
The invention relates to the technical field of wearable wrist type traditional Chinese medicine pulse diagnosis detection, in particular to an array type sensor and a preparation method and application thereof.
Background
As a treasure in Chinese traditional medicine, the traditional Chinese medicine has brilliant cultural history for thousands of years, and makes an immortal contribution to human health. The traditional Chinese medicine accumulates abundant experience in clinical diagnosis and treatment, and has the advantages of no substitution: such as overall conditioning, treatment by syndrome differentiation, less side effects, and mild prevention and treatment. With the unprecedented importance of the health preserving concept, more and more people know that the traditional Chinese medicine can make up the deficiency of western medicine in many aspects. However, at the same time, traditional Chinese medicine also faces some dilemmas: in China, the contradiction between the increasing demand of society and the serious shortage of high-quality traditional Chinese medicine resources and the unbalance of regional distribution begins to be prominent, and becomes an important factor for hindering the development of traditional Chinese medicines; in foreign countries, overseas Chinese people and some southeast Asia countries, the Chinese medicine is believed to be popular in Chinese medicine, but the diagnosis and treatment conditions of the Chinese medicine are very deficient, and the popularization and the application of the Chinese medicine technology internationally are seriously hindered.
The pulse-taking is a key diagnostic technique in traditional Chinese medicine and has a long history and unique creativity. The earliest record about pulse diagnosis can be found in the "Nei Jing" around the third century of the Gongyuan, which not only records the basic pulse diagnosis method, but also summarizes the clinical experience of the predecessors, and has a great influence on the development of the later-aged pulse science. The pulse-taking theory is applied and studied by medical scientists in various generations, accumulates quite abundant clinical experience, and becomes an indispensable important component in the theory of traditional Chinese medicine. The traditional Chinese medicine training is mainly explained and guided by experienced doctors, and then gradually mastered by long-term clinical practice. This process typically takes years or even decades to reach a higher level. The pulse diagnosis is an important means and basis for clinical diagnosis and treatment of diseases in traditional Chinese medicine, and because of the characteristics of 'easy heart and difficult finger-descending', the description of the pulse condition has strong appearance, is not beneficial to communication and repetition, limits the development of traditional Chinese medicine pulse science, and also makes the pulse diagnosis objective become historical.
China has also started in recent years in the aspect of intelligent diagnosis and treatment of traditional Chinese medicine. Such as the analysis system and method of pulse-taking in traditional Chinese medicine proposed by the Chinese medicine research institute; the pulse condition acquisition digital gloves are developed by northern industry university; a tongue fur image acquisition and analysis system with a distributed user terminal and the like researched by Qinghua university. The intelligent traditional Chinese medicine diagnosis and treatment technical researches are beneficial to the traditional Chinese medicine intelligent remote diagnosis and treatment technology, but some of the intelligent traditional Chinese medicine diagnosis and treatment technical researches belong to an independent intelligent diagnosis system and do not belong to remote diagnosis and treatment; some belong to the remote diagnosis and treatment model domain, but the function is single, for example, the tongue manifestation appearance is only equivalent to partial function of traditional Chinese medicine inspection; the pulse condition apparatus is equivalent to the palpation part of traditional Chinese medicine, and can only obtain basic information such as the frequency, the intensity and the like of pulse beating, but can not obtain pulse width, pulse length, pulse feeling information obtained by floating, taking, sinking and the like.
Disclosure of Invention
The invention aims to provide an array sensor aiming at the problem that the intelligent diagnosis and treatment in the prior art can not realize remote diagnosis and treatment or simplify the diagnosis and treatment functions.
On the other hand, the invention provides the preparation method of the array sensor, which is simple, convenient to operate and convenient for commercial popularization and application.
In another aspect of the present invention, there is provided a use of the array sensor in pulse diagnosis, wherein the sensor has a resistance that is regularly decreased when a pulse is oscillated, thereby collecting pulse diagnosis data.
The technical scheme adopted for realizing the purpose of the invention is as follows:
an array sensor comprises a first flexible substrate and a second flexible substrate which are oppositely arranged and fixedly connected, wherein a finger electrode array is fixed on one surface, facing the second flexible substrate, of the first flexible substrate, and a counter electrode is fixed on one surface, facing the first flexible substrate, of the second flexible substrate;
the counter electrode is rectangular shape and corresponds and is located the middle part that indicates of inserting of finger electrode array, the counter electrode perpendicular to insert the finger, the head and the tail both ends of counter electrode are located insert the head and the tail both ends of finger electrode array, insert finger electrode array including being two and above the finger electrode of inserting of matrix distribution, each finger electrode inserts finger portion including relative first finger portion and the second of inserting that sets up, each first leading-out terminal that inserts finger portion does an electrode leading-out terminal A of array sensor, each the second leading-out terminal that inserts finger portion does an electrode leading-out terminal B of array sensor.
In the above technical solution, the inter-digitated electrodes are arranged and distributed in an m × n manner, where m is 1, 2 or 3, and n is 4, 5 or 6.
In the above technical solution, the first flexible substrate and the second flexible substrate are made of flexible films made of PET, PI, or TPU.
In the technical scheme, the first flexible substrate and the second flexible substrate are of rectangular structures with the same shape and size, the length is 3-6 cm, the width is 1-4 cm, and the thickness is 1 μm-0.2 mm.
In the technical scheme, the array sensor is processed by the following steps:
step 1, cleaning and drying a first flexible substrate and a second flexible substrate;
step 2, printing a finger inserting electrode array on the surface of the first flexible substrate by silver paste conductive ink or copper paste conductive ink in a screen printing or glue dispensing or roll-to-roll printing mode, and drying to obtain a finger inserting electrode sheet;
step 3, printing a counter electrode on the conductive ink prepared by the conductive particles on a second flexible substrate in a screen printing or glue dispensing or roll-to-roll printing mode, and drying to obtain a counter electrode slice;
and 4, packaging the finger inserting electrode sheet and the counter electrode sheet by using an adhesive substance (such as EVA or double-sided adhesive tape) to obtain the array sensor.
In the above technical solution, the conductive particles are conductive carbon black or carbon nanotubes.
In another aspect of the invention, the application of the array sensor as a pulse sensor for pulse diagnosis is also included.
In the technical scheme, the array sensor is arranged at a wrist pulse detection part of a human body, so that the finger-inserting electrode array is positioned in the arm length direction, the foot-size part of the wrist of the human body is pressed for measurement, each electrode leading-out end A and each electrode leading-out end B of the array sensor are respectively and electrically connected with two inserting ports of a resistance measuring device, and resistance-time change is collected through the resistance measuring device.
In the above technical solution, the resistance measuring device is a two-electrode electrochemical workstation, a digital multimeter or a resistance measuring instrument.
In another aspect of the present invention, a method for manufacturing an array sensor includes the following steps:
step 1, cleaning and drying a first flexible substrate and a second flexible substrate;
step 2, printing a finger inserting electrode array on the surface of the first flexible substrate by silver paste conductive ink or copper paste conductive ink in a screen printing or glue dispensing or roll-to-roll printing mode, wherein the finger inserting electrode array comprises two or more finger inserting electrodes distributed in a matrix shape, and drying to obtain finger inserting electrode sheets;
step 3, printing the conductive ink prepared by the conductive particles on a second flexible substrate to form a strip-shaped counter electrode in a screen printing or glue dispensing or roll-to-roll printing mode, and drying to obtain a counter electrode slice;
and 4, packaging the finger inserting electrode sheet and the counter electrode sheet by using an adhesive substance (EVA or double-faced adhesive tape), enabling the counter electrode to be positioned in the middle of the finger inserting electrode array and perpendicular to the fingers of the finger inserting electrode, and enabling the head end and the tail end of the counter electrode to be positioned at the head end and the tail end of the finger inserting electrode array.
Compared with the prior art, the invention has the beneficial effects that:
1. the array sensor has the advantages of simple preparation method, good stability and repeatability and reusability; short production period, high yield, low cost and convenient commercial popularization and application.
2. When the array sensor is used as a pulse sensor for pulse diagnosis, the pulse-taking sensor can effectively acquire pulse width, pulse length, floating, taking, sinking and the like, has wide application prospect, and is favorable for better realizing the standardization and digitization of pulse diagnosis in traditional Chinese medicine.
3. The array sensor has simple structure and convenient carrying, has high sensitivity and strong specificity when being used as a pulse sensor for pulse diagnosis, and is suitable for field detection
4. The array sensor of the invention can accurately collect the detailed data of the pulse diagnosis at the wrist of the patient, and can quickly compare the detailed data with the big data sample of the medical record established in advance, match the medical record analysis suggestion or realize the remote medical treatment by the pulse characteristics reappeared by the bionic artificial arm.
Drawings
Fig. 1 is a schematic structural diagram of an interdigital electrode array (the interdigital electrode array is a 1 × 5 array interdigital electrode).
Fig. 2 is a schematic view of the structure of the counter electrode used in the present invention.
Fig. 3 is a diagram of the packaged product used in the present invention.
Fig. 4 is a diagram showing a state in which the array sensor of the present invention is used as a pulse sensor.
FIG. 5 shows the pulse-taking data obtained by chronoamperometry using an electrochemical workstation according to the present invention.
FIG. 6 is a partial enlarged view of pulse-taking data obtained by chronoamperometry using an electrochemical workstation according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
An array sensor comprises a first flexible substrate and a second flexible substrate which are oppositely arranged and fixedly connected, wherein one surface of the first flexible substrate facing the second flexible substrate is fixedly provided with a finger inserting electrode array (as shown in figure 1), one surface of the second flexible substrate facing the first flexible substrate is fixedly provided with a counter electrode, the counter electrode is in a long strip shape (as shown in figure 2) and is correspondingly positioned in the middle of a finger inserting part of the finger inserting electrode array, the counter electrode is perpendicular to the finger inserting part, the head end and the tail end of the counter electrode are positioned at the head end and the tail end of the finger inserting electrode array, the finger inserting electrode array comprises two or more finger inserting electrodes which are distributed in a matrix shape, each finger inserting electrode comprises a first finger inserting part and a second finger inserting part which are oppositely arranged, and the leading-out end of each first finger inserting part is an electrode leading-out end A of the array sensor, the leading-out end of each second finger-inserting part is an electrode leading-out end B of the array sensor.
First insert finger portion and second insert finger portion all including insert indicate and with insert the end of leading out that indicates the electric connection, insert to indicate for comb shape, lead out the end and insert the thin slice on indicating for connecting comb shape, during the use, usable wire is connected the link of first finger portion, the gap between first flexible substrate and the flexible substrate of second is worn out to the tip of wire, forms electrode and draws out end A, utilizes another wire to connect the link of finger portion is inserted to the second, and the gap between first flexible substrate and the flexible substrate of second is worn out to the tip of wire, forms electrode and draws out end B.
The electrode leading-out end A and the electrode leading-out end B are respectively connected with a resistance detection mechanism, when the sensor receives pressure, the resistance changes, and the resistance detection mechanism can monitor the change.
In the above technical solution, the inter-digitated electrodes are arranged and distributed in an m × n manner, where m is 1, 2 or 3, and n is 4, 5 or 6. Preferably, the array is distributed in a 1 × 5 mode, and the smaller the area of the single group of inserting finger parts, the higher the resolution is, and the human wrist position can be well covered. The interdigitated electrodes distributed in a 1 × 5 array include five electrode terminals a and electrode terminals B.
In the above technical solution, the first flexible substrate and the second flexible substrate are made of PET, PI, or TPU flexible films, and these flexible plastics can be used as good substrates.
In the above technical solution, the first flexible substrate and the second flexible substrate have the same shape and size. The first flexible substrate and the second flexible substrate which are the same in shape and size are fixed into a whole in an adhesion mode.
In the technical scheme, the first flexible substrate and the second flexible substrate are both rectangular structures, the length is 3-6 cm, the width is 1-4 cm, and the thickness is 1 μm-0.2 mm.
Example 2
This example further illustrates the processing method of the array sensor based on example 1.
The array sensor is processed by the following steps:
step 1, cleaning and drying a first flexible substrate and a second flexible substrate;
step 2, printing a finger inserting electrode array on the surface of the first flexible substrate by silver paste conductive ink or copper paste conductive ink in a screen printing or glue dispensing or roll-to-roll printing mode, and drying to obtain a finger inserting electrode sheet;
step 3, printing a counter electrode on the conductive ink prepared by the conductive particles on a second flexible substrate in a screen printing or glue dispensing or roll-to-roll printing mode, and drying to obtain a counter electrode slice;
and 4, packaging the finger inserting electrode sheet and the counter electrode sheet by utilizing EVA (ethylene vinyl acetate) or double-sided adhesive to obtain the array sensor, as shown in figure 3.
During cleaning, a first flexible substrate and a second flexible substrate made of flexible plastics such as PET, PI or TPU are subjected to ultrasonic cleaning in solutions such as ethanol and acetone, and then dried. Then finger insertion electrodes are prepared on the first flexible substrate, array arrangement is formed through graphical processing, counter electrodes are prepared on the second flexible substrate, and finally the array sensor is formed through packaging.
In the above technical solution, the conductive particles are conductive carbon black or carbon nanotubes. Both are conductive particles having good conductivity.
Example 3
This example illustrates the application of the array sensor based on example 1 or 2.
The array sensor is applied to pulse sensors for pulse diagnosis.
In the above technical solution, as shown in fig. 4, the array sensor is placed at a wrist pulse detection position of a human body, so that the finger-inserted electrode array is located in the direction of the length of the arm, each electrode leading-out terminal a and each electrode leading-out terminal B of the array sensor are respectively electrically connected with two insertion ports of a resistance measuring device, the wrist inch-scale position of the human body is pressed for measurement, and resistance-time change is collected by the resistance measuring device. After each electrode leading-out end A and each electrode leading-out end B are connected with the resistance measuring device, resistance-time change can be obtained, and by taking the interdigital electrodes distributed in a 1 × 5 type array as an example, the resistance-time change of 5 interdigital electrodes can be simultaneously obtained by adopting a multi-channel simultaneous acquisition mode. Fig. 5 and 6 are a schematic diagram and a partially enlarged schematic diagram of resistance-time change data obtained from the 3 rd interdigitated electrode from the side close to the palm under extraction pressure, respectively.
The array sensor is placed at a wrist pulse detection part (as shown in figure 4), the cun-guan-chi part of the wrist of a human body is pressed by fingers, and during measurement, the resistance of the sensor is regularly reduced along with the vibration of the pulse of the human body, so that the pulse diagnosis data sampling is realized.
Pulse diagnosis information such as pulse width, pulse length, floating taking, sinking taking and the like can be obtained through the pulse sensor.
The pulse width is the thickness of the pulse channel sensed by the finger, taking 3 × 5 array-distributed finger insertion electrodes as an example, if two finger insertion electrodes can collect effective pulse information, the range corresponding to the two finger insertion electrodes is the pulse width.
For the pulse length, the number of the finger insertion electrodes capable of acquiring effective pulse information is calculated as shown in fig. 1 and 4, taking the finger insertion electrodes distributed in a 1 × 5 array as an example, for example, 3 of five finger insertion electrodes can acquire effective pulse information, and the range corresponding to three finger insertion electrodes is the pulse length.
The floating, taking and sinking means that the collected data corresponding to different finger pressing force degrees in the pulse feeling process of the traditional Chinese medicine can be rapidly distinguished through the resistance value range change of the ordinate of the graph 6.
In the above technical solution, the resistance measuring device is a two-electrode electrochemical workstation, a digital multimeter or a resistance measuring instrument.
A two-electrode chemical system is used for timing current test, the test voltage is 0.1-1V, and a digital multimeter can be used for acquiring resistance-time change in real time.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. An array sensor is characterized by comprising a first flexible substrate and a second flexible substrate which are oppositely arranged and fixedly connected, wherein a finger inserting electrode array is fixed on one surface of the first flexible substrate facing the second flexible substrate, and a counter electrode is fixed on one surface of the second flexible substrate facing the first flexible substrate;
the counter electrode is rectangular shape and corresponds and is located insert the middle part that indicates of inserting of finger electrode array, the counter electrode perpendicular to insert and indicate, the head and the tail both ends of counter electrode are located insert the head and the tail both ends of finger electrode array, insert finger electrode array including being two and above the finger electrode that inserts of matrix distribution, each insert finger electrode and insert finger portion including relative first finger portion and the second that inserts that sets up, each first leading-out terminal that inserts finger portion does an electrode leading-out terminal A of array sensor, each the second inserts the leading-out terminal that finger portion does an electrode leading-out terminal B of array sensor.
2. The array sensor of claim 1, wherein the interdigitated electrodes are arranged in an mxn arrangement, wherein m is 1, 2, or 3 and n is 4, 5, or 6.
3. The array sensor of claim 1, wherein the first flexible substrate and the second flexible substrate are flexible films of PET, PI, or TPU.
4. The array sensor of claim 1, wherein the first flexible substrate and the second flexible substrate are rectangular structures having the same size and shape, a length of 3-6 cm, a width of 1-4 cm, and a thickness of 1 μm-0.2 mm.
5. The array sensor of claim 1, wherein the array sensor is processed by:
step 1, cleaning and drying a first flexible substrate and a second flexible substrate;
step 2, printing a finger inserting electrode array on the surface of the first flexible substrate by silver paste conductive ink or copper paste conductive ink in a screen printing or glue dispensing or roll-to-roll printing mode, and drying to obtain a finger inserting electrode sheet;
step 3, printing a counter electrode on the conductive ink prepared by the conductive particles on a second flexible substrate in a screen printing or glue dispensing or roll-to-roll printing mode, and drying to obtain a counter electrode slice;
and 4, packaging the finger inserting electrode sheet and the counter electrode sheet by using an adhesive substance to obtain the array sensor.
6. The array sensor of claim 5, wherein the conductive particles are conductive carbon black or carbon nanotubes.
7. Use of the array sensor of any one of claims 1-6 as a pulse sensor for pulse diagnosis.
8. The use of claim 7, wherein the array sensor is placed at the wrist pulse detection position of the human body, so that the finger electrode array is located in the arm length direction, and the foot-size position of the wrist of the human body is pressed for measurement, each electrode terminal A and electrode terminal B of the array sensor are respectively electrically connected with two plug ports of the resistance measuring device, and the resistance-time change is collected through the resistance measuring device.
9. The use according to claim 8, wherein the electrical resistance measuring device is a two-electrode electrochemical workstation, a digital multimeter, or an electrical resistance measuring instrument.
10. A preparation method of an array sensor is characterized by comprising the following steps:
step 1, cleaning and drying a first flexible substrate and a second flexible substrate;
step 2, printing a finger inserting electrode array on the surface of the first flexible substrate by silver paste conductive ink or copper paste conductive ink in a screen printing or glue dispensing or roll-to-roll printing mode, wherein the finger inserting electrode array comprises two or more finger inserting electrodes distributed in a matrix shape, and drying to obtain finger inserting electrode sheets;
step 3, printing the conductive ink prepared by the conductive particles on a second flexible substrate to form a strip-shaped counter electrode in a screen printing or glue dispensing or roll-to-roll printing mode, and drying to obtain a counter electrode slice;
and 4, packaging the finger inserting electrode sheet and the counter electrode sheet by using an adhesive substance, enabling the counter electrode to be positioned in the middle of the finger inserting electrode array and perpendicular to the fingers of the finger inserting electrode, and enabling the head end and the tail end of the counter electrode to be positioned at the head end and the tail end of the finger inserting electrode array.
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