CN114469033A - Heart rate detection sensor, protective clothing and manufacturing method of sensor - Google Patents
Heart rate detection sensor, protective clothing and manufacturing method of sensor Download PDFInfo
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- CN114469033A CN114469033A CN202111334695.3A CN202111334695A CN114469033A CN 114469033 A CN114469033 A CN 114469033A CN 202111334695 A CN202111334695 A CN 202111334695A CN 114469033 A CN114469033 A CN 114469033A
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- 238000000034 method Methods 0.000 claims description 21
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- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 7
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- 229910052709 silver Inorganic materials 0.000 claims description 6
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- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 claims description 4
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 claims description 4
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/024—Detecting, measuring or recording pulse rate or heart rate
Abstract
The invention discloses a heart rate detection sensor, protective clothing and a manufacturing method of the heart rate detection sensor, wherein the heart rate detection sensor comprises a first packaging layer; the first electrode layer is arranged on the lower surface of the first packaging layer; the dielectric layer is arranged on the lower surface of the first electrode layer and is made of water-soluble polymer hydrogel, and a plurality of through holes are formed in the dielectric layer; the second electrode layer is arranged on the lower surface of the dielectric layer; and the second packaging layer is arranged on the lower surface of the second electrode layer. The heart rate detection sensor provided by the embodiment of the invention is prepared by taking hydrogel as a substrate, has good biocompatibility and environmental friendliness, is high in comfort, has higher sensitivity, is more accurate in detection, and has strong practicability.
Description
Technical Field
The invention relates to the technical field of sensors, in particular to a heart rate detection sensor, protective clothing and a manufacturing method of the sensor.
Background
The environment that present miner worked in the pit has the characteristics of high dust, high noise etc, and the colliery occupational disease that causes has caused very big influence to workman's health status from this, simultaneously because at present to workman self operating condition like drinking wine, tired, breathe not smooth and lack necessary monitoring and early warning like sudden events such as cardiac arrest, miner worked under the not good condition of state, caused very big potential safety hazard, the very easy production accident that takes place.
In the related technology, the method for monitoring the heart rate is generally adopted to judge the vital signs of workers, the existing method for monitoring the heart rate of underground miners mainly comprises a photoplethysmography method, a blood oxygenation method and an electrocardiosignal method, but the photoplethysmography method has high dependence on blood components, and the people are required to keep a static state in the detection process, so that the method is easily influenced by a light source and has higher cost; the blood oxygen method needs to clamp fingers in the detection process, has continuous oppression on a human body, is poor in comfort and high in cost; the electrocardiosignal method needs to use electrodes to detect electric signals on the surface of human skin, the contact impedance of the electrodes and the human body is not matched, large capacitive coupling interference exists, the electrodes need to be connected to multiple parts of the human body during detection, and the electrocardiosignal method is heavy in equipment, difficult to operate, poor in portability and complex in calculation.
Disclosure of Invention
The present invention is directed to solving, at least in part, one of the technical problems in the related art.
Therefore, the embodiment of the invention provides a heart rate detection sensor which has good biocompatibility and environmental friendliness and high sensitivity.
The embodiment of the invention also provides protective clothing with the heart rate detection sensor.
The embodiment of the invention also provides a preparation method of the sensor.
The heart rate detection sensor comprises a first packaging layer; the first electrode layer is arranged on the lower surface of the first packaging layer; the dielectric layer is arranged on the lower surface of the first electrode layer and is made of water-soluble polymer hydrogel, and a plurality of through holes are formed in the dielectric layer; the second electrode layer is arranged on the lower surface of the dielectric layer; and the second packaging layer is arranged on the lower surface of the second electrode layer.
The heart rate detection sensor provided by the embodiment of the invention is prepared by taking hydrogel as a substrate, and has the advantages of good biocompatibility, environment friendliness, high comfort, higher sensitivity, more accurate detection and strong practicability.
In some embodiments, the polymer hydrogel is a polyvinyl alcohol hydrogel, a polyvinyl pyrrolidone hydrogel, or a polyacrylamide hydrogel.
In some embodiments, the dielectric layer has a thickness of 50-300 μm.
In some embodiments, the material of the first encapsulation layer is Ecoflex or polyethylene terephthalate and the material of the second encapsulation layer is Ecoflex or polyethylene terephthalate.
In some embodiments, the first electrode layer is a silver electrode layer or an aluminum electrode layer, and the second electrode layer is a silver electrode layer or an aluminum electrode layer.
In some embodiments, the first electrode layer has a thickness of 50nm to 500nm and the second electrode layer has a thickness of 50nm to 500 nm.
The protective garment of an embodiment of the second aspect of the invention comprises a heart rate detection sensor as described in any of the embodiments above.
The method for manufacturing the sensor in the embodiment of the third aspect of the invention comprises the following steps:
providing a silicon wafer, attaching a first packaging layer on the silicon wafer, and processing a first electrode layer on one side of the first packaging layer where the silicon wafer is located;
putting 5% glycerol, 10% polyvinyl alcohol solution and pore-forming agent into a container, mixing, and magnetically stirring for 3 hours until no obvious precipitate exists to obtain a pre-solution;
casting the preposed solution on the first electrode layer, freezing for 24 hours at the temperature of-20 ℃, thawing for 2 hours at room temperature, and generating a dielectric layer on the side of the first electrode layer away from the packaging layer;
heating the semi-finished product with the dielectric layer at the temperature of 60 ℃ for 30 minutes, and volatilizing the pore-forming agent to form a through hole on the dielectric layer;
processing a second electrode layer on one side of the dielectric layer far away from the first electrode layer;
and attaching a second packaging layer to one side of the second electrode layer far away from the dielectric layer.
In some embodiments, the porogen is 15% wt ammonium bicarbonate particles.
In some embodiments, the method of processing the first electrode layer or processing the second electrode layer is electron beam evaporation coating, 3D printing, screen printing, or metal tape bonding.
Drawings
FIG. 1 is a schematic diagram of a heart rate detection sensor of an embodiment of the present invention;
FIG. 2 is a schematic flow diagram of a portion of a method of making a sensor according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart of another portion of a method of making a sensor according to an embodiment of the present invention.
Reference numerals:
heart rate detection sensor 100, first encapsulation layer 101, first electrode layer 102, dielectric layer 103, second electrode layer 104, second encapsulation layer 105.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The heart rate detection sensor 100 of the embodiment of the present invention is described below with reference to the drawings.
As shown in fig. 1, a heart rate detection sensor 100 according to an embodiment of the present invention includes a first encapsulation layer 101, a first electrode layer 102, a dielectric layer 103, a second electrode layer 104, and a second encapsulation layer 105, which are stacked in this order from top to bottom.
Wherein the dielectric layer 103 is made of water-soluble polymer hydrogel, and a plurality of through holes are arranged on the dielectric layer 103; on the one hand, the heart rate detection sensor 100100 made by using hydrogel as a substrate has good flexibility, can be in good contact with the skin surface to obtain a clear heart rate signal, and is good in electrical safety, and can be equipped on a protective clothing to detect the heart rate of workers in the well, and does not cause discomfort to users in the detection process, and the dielectric layer 103 made of water-soluble polymer hydrogel can be degraded in aqueous solution, thereby avoiding environmental pollution, on the other hand, the through holes arranged on the dielectric layer 103 enable the dielectric layer 103 to be under the same pressure, so that greater deformation can be generated, the elastic modulus of the dielectric layer 103 is reduced, and the sensitivity of the made heart rate detection sensor 100 is higher.
The heart rate detection sensor 100 provided by the embodiment of the invention is made of hydrogel as a substrate, and has the advantages of good biocompatibility, environment friendliness, high comfort, high sensitivity, more accurate detection and strong practicability.
The polymer hydrogel is polyvinyl alcohol hydrogel, polyvinylpyrrolidone hydrogel or polyacrylamide hydrogel, preferably polyvinyl alcohol hydrogel, has good biocompatibility, high elasticity and high strength, and is very suitable for serving as a substrate material of a sensor.
In some embodiments, the thickness of the dielectric layer 103 is 50-300 μm, for example, the thickness of the dielectric layer 103 may be 100 μm, 150 μm, 200 μm, or 250 μm, and the thickness of the dielectric layer 103 is preferably 200 μm without being too thin or too thick.
The thickness of the first packaging layer 101 and the second packaging layer 105 are both 6 μm, the material of the first packaging layer 101 is Ecoflex or polyethylene terephthalate, the material of the second packaging layer 105 is Ecoflex or polyethylene terephthalate, and a film made of polyethylene terephthalate material is preferred.
It should be noted that Ecoflex is a platinum-catalyzed silicone produced by Smooth-On, is a simple and versatile silicone material, has good water resistance relative to polymers stable to the surrounding environment, and is suitable for use in the preparation of stress sensors or pressure sensors.
In some embodiments, the first electrode layer 102 and the second electrode layer 104 are both metal electrode layers made of silver or aluminum, preferably silver electrode layers.
The thickness of the first electrode layer 102 is 50nm-500nm, the thickness of the second electrode layer 104 is 50nm-500nm, for example, the thickness of the first electrode layer 102 may be 100nm, 200nm, 300nm or 400nm, the thickness of the second electrode layer 104 may be 100nm, 200nm, 300nm or 400nm, preferably, the thickness of the first electrode layer 102 and the thickness of the second electrode layer 104 are both 100nm, and in combination with the above, the thickness of the dielectric layer 103 is both preferably 200 μm, and the total thickness of the heart rate detection sensor 100 of the embodiment of the invention is only 200-.
The protective clothing of the embodiment of the second aspect of the invention comprises the heart rate detection sensor 100 of any one of the above embodiments, and the protective clothing equipped with the heart rate detector can obtain the heart rate signal of a user by contacting the heart rate detection sensor 100 with the skin surface while isolating external dust, does not cause any discomfort to the user in the detection process, and has good wearability.
As shown in fig. 2 and 3, a method for manufacturing a sensor according to an embodiment of the third aspect of the present invention includes the steps of:
1) providing a silicon wafer, attaching a first packaging layer 101 on the silicon wafer, and processing a first electrode layer 102 on one side of the first packaging layer 101 where the silicon wafer is;
2) putting 5% glycerol, 10% polyvinyl alcohol solution and pore-forming agent into a container, mixing, magnetically stirring for 3 hours until no obvious precipitate exists to obtain a pre-solution, wherein the glycerol can play a moisturizing role, and the pore-forming agent is 15% wt ammonium bicarbonate particles;
3) casting the pre-solution on the first electrode layer 102, freezing at-20 ℃ for 24 hours, thawing at room temperature for 2 hours, and forming a dielectric layer 103 on the side of the first electrode layer 102 away from the packaging layer;
4) heating the semi-finished product with the dielectric layer 103 at 60 ℃ for 30 minutes, volatilizing ammonium bicarbonate particles to generate carbon dioxide gas, and forming a plurality of through holes on the dielectric layer 103, wherein the existence of the through holes enables the dielectric layer 103 to generate larger deformation under the same pressure, and the elastic modulus of the dielectric layer 103 is reduced;
5) processing a second electrode layer 104 on the side of the dielectric layer 103 away from the first electrode layer 102;
6) and a second packaging layer 105 is attached to one side, far away from the dielectric layer 103, of the second electrode layer 104, the first packaging layer 101 is used for protecting the first electrode layer 102, and the second packaging layer 105 is used for protecting the second electrode layer 104.
In step 1 and step 5, the method for processing the first electrode layer 102 or the second electrode layer 104 is any one of electron beam evaporation coating, 3D printing, screen printing and metal tape bonding, which can be selected according to the process requirements.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A heart rate detection sensor, comprising:
a first encapsulation layer;
the first electrode layer is arranged on the lower surface of the first packaging layer;
the dielectric layer is arranged on the lower surface of the first electrode layer and is made of water-soluble polymer hydrogel, and a plurality of through holes are formed in the dielectric layer;
the second electrode layer is arranged on the lower surface of the dielectric layer;
and the second packaging layer is arranged on the lower surface of the second electrode layer.
2. The heart rate detection sensor of claim 1, wherein the polymer hydrogel is a polyvinyl alcohol hydrogel, a polyvinyl pyrrolidone hydrogel, or a polyacrylamide hydrogel.
3. Heart rate detection sensor according to claim 1, wherein the dielectric layer has a thickness of 50-300 μm.
4. A heart rate detection sensor according to claim 1, wherein the material of the first encapsulation layer is Ecoflex or polyethylene terephthalate and the material of the second encapsulation layer is Ecoflex or polyethylene terephthalate.
5. The heart rate detection sensor according to claim 1, wherein the first electrode layer is a silver electrode layer or an aluminum electrode layer, and the second electrode layer is a silver electrode layer or an aluminum electrode layer.
6. The heart rate detection sensor of claim 1, wherein the first electrode layer has a thickness of 50nm to 500nm and the second electrode layer has a thickness of 50nm to 500 nm.
7. Protective clothing, characterized in that it comprises a heart rate detection sensor according to any one of claims 1-6.
8. A method of making a sensor, comprising:
providing a silicon wafer, attaching a first packaging layer on the silicon wafer, and processing a first electrode layer on one side of the first packaging layer where the silicon wafer is;
putting 5% glycerol, 10% polyvinyl alcohol solution and pore-forming agent into a container, mixing, and magnetically stirring for 3 hours until no obvious precipitate exists to obtain a pre-solution;
casting the preposed solution on the first electrode layer, freezing for 24 hours at the temperature of-20 ℃, thawing for 2 hours at room temperature, and generating a dielectric layer on the side of the first electrode layer away from the packaging layer;
heating the semi-finished product with the dielectric layer at the temperature of 60 ℃ for 30 minutes, and volatilizing the pore-forming agent to form a through hole on the dielectric layer;
processing a second electrode layer on one side of the dielectric layer far away from the first electrode layer;
and attaching a second packaging layer to one side of the second electrode layer far away from the dielectric layer.
9. The method of claim 8, wherein the porogen is 15 wt% ammonium bicarbonate particles.
10. The method of claim 8, wherein the first electrode layer or the second electrode layer is processed by electron beam evaporation, 3D printing, screen printing or metal tape bonding.
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| CN202111334695.3A CN114469033A (en) | 2021-11-11 | 2021-11-11 | Heart rate detection sensor, protective clothing and manufacturing method of sensor |
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| CN202111334695.3A CN114469033A (en) | 2021-11-11 | 2021-11-11 | Heart rate detection sensor, protective clothing and manufacturing method of sensor |
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| CN113203504A (en) * | 2021-04-01 | 2021-08-03 | 上海交通大学 | Flexible wearable pressure sensor with ultrahigh capacitance and pressure sensor array |
| CN113188711A (en) * | 2021-04-29 | 2021-07-30 | 苏州凝智新材料发展有限公司 | Pressure sensor and preparation method and application thereof |
| CN113218543A (en) * | 2021-05-07 | 2021-08-06 | 中国科学院苏州纳米技术与纳米仿生研究所 | Flexible pressure sensor, dielectric layer thereof and preparation method of dielectric layer |
| CN113237419A (en) * | 2021-05-14 | 2021-08-10 | 东南大学 | High-sensitivity flexible capacitive strain sensor and preparation method thereof |
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