WO2018006529A1

WO2018006529A1 - Polymer thin film and physiological signal collection sensor band

Info

Publication number: WO2018006529A1
Application number: PCT/CN2016/106147
Authority: WO
Inventors: 王珊; 刘同军; 孙利佳; 付晓玥; 崔婧; 徐传毅
Original assignee: 纳智源科技（唐山）有限责任公司
Priority date: 2016-07-05
Filing date: 2016-11-16
Publication date: 2018-01-11

Abstract

A polymer thin film and physiological signal collection sensor band. The polymer thin film comprises: a bump array arranged on a surface of the polymer thin film, wherein the bump array is composed of M rows of bumps and N columns of bumps; a first bump (A1) at the i-th row and the j-th column, a second bump (A2) at the (i-1)-th row and the (j+1)-th column, a third bump (A3) at the i-th row and the (j+2)-th column and a fourth bump (A4) at the (i+1)-th row and the (j+1)-th column form four vertexes of a rhombus, wherein 2 ≤ i ≤ M-1 and 1 ≤ j ≤ N-2; and the distance between the bumps of four vertexes of the rhombus is set according to an effective supporting radius of a single bump.

Description

Polymer film and physiological signal acquisition sensor strip

Cross-reference to related applications

This application is required to be submitted to the Chinese Patent Office on August 5, 2016, and the application number is 201610637631.3. The Chinese patent application entitled "Polymer film, friction generator and physiological signal acquisition device using the same" and on July 5, 2016 The priority of the Chinese Patent Application No. 201610521773.3, entitled "Physiological Signal Acquisition Sensing Bands and Applications", is hereby incorporated by reference in its entirety.

Technical field

The invention relates to the technical field of polymer films, in particular to a polymer film, a friction generator and a physiological signal collecting device using the same, and a physiological signal collecting sensor belt, a physiological monitoring system and a physiological monitoring mattress. And physiological monitoring pillows.

Background technique

At present, the signal acquisition devices used in the field of physiological signal monitoring are mostly thin film vibration sensors. Among them, the sensing principle of the thin film vibration sensors can be roughly divided into piezoelectric type and friction type.

One of the key components in the friction-generator film-type vibration sensor is a polymer film having a bump on one side, and the performance of the film-type vibration sensor largely depends on the structure of the polymer film and its material properties.

In addition, the physiological signal monitoring sensor belt of the friction film generator based on the polymer film has been applied to the collection and monitoring of human physiological signals, such as heartbeat, breathing and the like. The two friction layers forming the friction interface in the friction generator continuously contact and separate, generating induced charges, changing the capacitance between the two output electrodes, causing a potential difference between the two electrodes, and when connected to the external circuit, the pulse of the alternating current Electrical output. However, due to the small amplitude of human body activity such as heartbeat and breathing, the force acting on the friction generator is small, resulting in a small output signal of the friction generator, which is difficult to identify, analyze and process.

In the prior art, the bumps on the surface of the polymer film are mostly arranged in a square manner. The column mode is relatively mature, but the signal output of the thin film vibration sensor to which it is applied has been unsatisfactory.

Summary of the invention

The object of the present invention is to provide a polymer film, a friction generator using the same, a physiological signal acquisition device, a physiological signal acquisition sensor belt, a physiological monitoring system, a physiological monitoring mattress, and the like. Physiological monitoring pillows. The problem of unsatisfactory signal output of the thin film vibration sensor in the prior art can be solved by the present invention. In addition, the physiological signal acquisition sensor strip provided by the present invention is provided with a reinforcing layer between the first electrode layer of the friction generator and the first polymer polymer insulating layer composed of the polymer film. After the frictional interface between the electrode layer and the first polymer insulating layer generates an induced charge, the reinforcing layer can reduce the neutralization rate of the electrons generated by the friction and the induced positive charge under the action of the internal electric field, thereby making the density of the induced charge Increasing, further, the potential difference between the first electrode layer and the second electrode layer is increased, whereby the amplitude of the sensor strip output signal is increased.

The invention provides a polymer film comprising: an array of bumps disposed on a surface of a polymer film, the array of bumps being composed of M rows of bumps and N columns of bumps;

Wherein the first bump located in the jth column of the i-th row, the second bump located in the j+1th row of the i-1th row, the third bump located in the j+2th column of the i-th row, and the i-th The fourth bump of the j+1th column of +1 row forms the four vertices of the diamond; 2 ≤ i ≤ M-1, 1 ≤ j ≤ N-2; the spacing between the bumps forming the four vertices of the diamond is based on Set by the effective support radius of a single bump.

The present invention also provides a friction generator comprising the above polymer film, the friction generator having two surfaces constituting a friction interface, wherein the surface of the polymer film having the bumps is the two surfaces constituting the friction interface One of the surfaces.

The present invention also provides a physiological signal acquisition device using the above polymer film.

The surface of the polymer film provided by the present invention is provided with a bump array composed of M rows of bumps and N columns of bumps, and a plurality of bumps in the bump array are arranged in a rhombic arrangement manner, and a plurality of bumps are arranged. Compared with the square arrangement, the effective support area of the bump array is effectively increased, which helps to improve the friction generator and physiological signal acquisition device using the polymer film. Number output.

The invention also provides a physiological signal acquisition sensor strip. According to an embodiment of the invention, the physiological signal acquisition sensor belt comprises: a friction generator comprising: a first electrode layer, a reinforcement layer, and a first polymer composed of the polymer film, which are sequentially stacked a polymer insulating layer and a second electrode layer; an insulating layer, the insulating layer is coated on an outer surface of the friction generator; a shielding layer, the shielding layer is coated on an outer surface of the insulating layer; and an encapsulating layer The encapsulation layer is coated on an outer surface of the shielding layer; and an output electrode, the output electrode includes a first extraction electrode and a second extraction electrode, the first extraction electrode penetrating the insulation layer, the shielding And the encapsulation layer is connected to the first electrode layer, the second extraction electrode is connected to the shielding layer through the encapsulation layer, or the second extraction electrode passes through the insulation layer The shielding layer and the encapsulation layer are connected to the shielding layer and the second electrode layer.

According to the physiological signal acquisition sensing strip of the embodiment of the present invention, a reinforcing layer is disposed between the first electrode layer of the friction generator and the first polymer insulating layer, and the second electrode layer is polymerized with the first polymer. After the frictional interface between the insulating layers of the material generates an induced charge, the reinforcing layer can reduce the neutralization rate of the electrons generated by the friction and the induced positive charge under the action of the internal electric field, thereby increasing the density of the induced charge, thereby further making the first electrode layer The potential difference between the second electrode layer and the second electrode layer is increased, whereby the amplitude of the sensor strip output signal is increased. At the same time, the insulation layer and the shielding layer realize self-moisture and self-shielding functions, which not only increases the stability of the output electrical signal, but also prolongs the service life. Moreover, the physiological signal acquisition sensor belt has low cost, simple structure, high signal sensitivity and good stability.

It is further illustrated that the physiological signal acquisition sensor strip based on the principle of the friction generator can be used not only to monitor the frequency and/or waveform of the human body's breathing and heartbeat, but also to detect other physiological behaviors and motion signals simultaneously. Taking sleep physiological monitoring as an example, when a person is in a quiet sleep, the physiological electrical signal (such as a voltage signal) output by the physiological signal acquisition sensor band can reflect the frequency and/or waveform of the breathing and heartbeat in the quiet sleep of the human body; When there is a turn-up, bed-out, snoring, etc. during sleep, the physiological signal acquisition sensor band will output a physiological electrical signal that is significantly different from that in a quiet sleep. Based on the above signals, sleep quality and human health can be analyzed.

Based on the aforementioned physiological signal acquisition sensor strip, in accordance with another aspect of the present invention, the present invention provides a physiological monitoring system. According to an embodiment of the invention, the system comprises: the aforementioned physiological signal acquisition sensor band; and a terminal device, wherein the terminal device is connected to the physiological signal acquisition sensor band, The terminal device is configured to perform statistical analysis on the physiological electrical signal output by the physiological signal acquisition sensor band, and display statistical analysis results.

Further, according to still another aspect of the present invention, the present invention provides a physiological monitoring mattress. According to a specific embodiment of the present invention, the physiological monitoring mattress comprises: a mattress body; and the aforementioned physiological signal acquisition sensing strip, the physiological signal acquisition sensing strip being disposed inside and/or outside the mattress body.

According to the physiological monitoring mattress of the embodiment of the invention, the physiological signal acquisition sensing belt is used to collect the physiological signal, and has the advantages of self-power supply, high sensitivity, stable output electrical signal, simple operation and long service life. Moreover, the structure of the physiological monitoring mattress and the manufacturing process are simple, the cost is low, and the utility model is suitable for large-scale industrial production.

Further, according to still another aspect of the present invention, the present invention provides a physiological monitoring pillow. According to an embodiment of the invention, the physiological monitoring pillow comprises: a pillow body; and the aforementioned physiological signal acquisition sensor belt, the physiological signal acquisition sensor belt being disposed inside and/or outside the pillow body.

According to the physiological monitoring pillow of the embodiment of the present invention, the physiological signal acquisition sensing belt is used to collect the physiological signal, and has the advantages of self-power supply, high sensitivity, stable output electrical signal, simple operation and long service life. Moreover, the structure of the physiological monitoring pillow and the manufacturing process are simple, the cost is low, and the utility model is suitable for large-scale industrial production.

Further, according to still another aspect of the present invention, the present invention provides a physiological monitoring system. According to an embodiment of the invention, the system comprises: the aforementioned physiological monitoring mattress or the aforementioned physiological monitoring pillow; and a terminal device, the terminal device being connected to the physiological monitoring mattress or the physiological monitoring pillow, the terminal device The physiological electrical signal outputted by the physiological monitoring mattress or the physiological monitoring pillow is statistically analyzed, and statistical analysis results are displayed.

According to the physiological monitoring system of the embodiment of the present invention, the physiological signal is collected by using the physiological monitoring mattress or the physiological monitoring pillow, and has the advantages of self-power supply, high sensitivity, stable output electrical signal, simple operation and long service life. The use of terminal equipment for analysis and diagnosis of physiological signals makes the detection results more accurate and reliable. Moreover, the physiological monitoring system has the characteristics of simple structure, simple manufacturing process, low cost and large-scale industrial production.

Additional aspects and advantages of the invention will be set forth in part in the description which follows. It is apparent from the description or by the practice of the invention.

DRAWINGS

1 is a schematic view of a first embodiment of a polymer film provided by the present invention;

2 is a schematic view of a second embodiment of a polymer film provided by the present invention;

3 is a schematic view showing a third embodiment of the polymer film provided by the present invention;

Figure 4 is a schematic view of a prior art polymer film;

FIG. 5 is a schematic structural diagram of Embodiment 4 of a physiological signal acquisition sensing strip provided by the present invention; FIG.

Figure 6 is a schematic structural view of Embodiment 5 of the enhancement layer provided by the present invention;

7 is a schematic structural diagram of Embodiment 6 of a physiological signal acquisition sensor belt provided by the present invention;

FIG. 8 is a schematic structural diagram of Embodiment 7 of a physiological signal acquisition sensing strip provided by the present invention; FIG.

FIG. 9 is a schematic diagram showing the results of detecting the health of the human body by using the existing physiological signal acquisition sensor strip;

FIG. 10 is a diagram showing the results of detecting a human health condition using a physiological signal acquisition sensor strip according to an embodiment of the present invention.

detailed description

The present invention will be described in detail by the following detailed description of the preferred embodiments of the invention, and the invention is not limited thereto.

For example, a friction generator of a frictional power generation type diaphragm vibration sensor may be a three-layer structure, a four-layer structure, a five-layer intermediate film structure or a five-layer inter-electrode structure friction generator, for example, three The layered friction generator includes: a first electrode layer, a polymer film, and a second electrode layer which are sequentially stacked, wherein the two faces of the polymer film and the second electrode layer constitute a friction interface, that is, a polymer film and The second electrode layer is a friction layer of a three-layer structure friction generator.

For the friction generator, the friction layer contact area and the friction layer contact separation speed are two important factors affecting the power generation efficiency of the friction generator, and the friction layer contact area and the polymer film table The setting of the bump on the surface is related. Among them, the bump on the surface of the polymer film mainly serves two functions, one is to support two friction interfaces, so that the friction interface is in a separated state when no external force is applied; the second is to rebound after removing the external force, so that the contact The friction interface is separated. However, since the area that each bump can support is constant, in a certain bump arrangement, if the number of bumps is small and square, the friction interface cannot be completely separated when the external force is removed. This affects the power generation efficiency of the friction generator. In addition, if the bumps provided in the unit area are too dense, the two friction interfaces cannot be completely contacted when subjected to an external force, and the power generation efficiency of the friction generator is also affected. .

In view of the above, the present invention provides a polymer film comprising: an array of bumps disposed on a surface of a polymer film, the array of bumps consisting of M rows of bumps and N columns of bumps. Wherein the first bump located in the jth column of the i-th row, the second bump located in the j+1th row of the i-1th row, the third bump located in the j+2th column of the i-th row, and the i-th The fourth bump of the j+1th column of +1 row forms the four vertices of the diamond, 2 ≤ i ≤ M-1, 1 ≤ j ≤ N-2. The spacing between the bumps forming the four vertices of the diamond is set according to the effective support radius of the individual bumps. Specifically, the spacing between adjacent bumps forming the four vertices of the diamond and the spacing between the opposing bumps can all be set according to the effective supporting radius of the single bump.

Wherein, the spacing between adjacent bumps forming the four vertices of the diamond is 1-5 times the effective supporting radius of the single bump. Specifically, in the formed diamond, the first bump and the second bump are adjacent bumps, and the second bump and the third bump are adjacent bumps, the third bump and the fourth bump The points are adjacent bumps, and the fourth bump and the first bump are adjacent bumps. Under the condition that the number of bumps per unit area is the same or similar, the spacing between adjacent bumps forming the four vertices of the diamond is set according to 1-5 times of the effective supporting radius of the single bump, and the plurality of bumps are arranged according to Compared with the arrangement of the square arrangement, the effective support area of the bump array can be effectively increased, so that the application of the polymer film to the friction generator enables the friction interface to be sufficiently contacted and separated, which contributes to the improvement of the friction generator. Power generation efficiency and enhanced signal output.

Specifically, in the formed diamond, the first bump and the third bump are a pair of opposite bumps, and the second bump and the fourth bump are another pair of opposite bumps, the first bump and The spacing between the third bumps is greater than or equal to 2 times the effective supporting radius of the single bumps, and the spacing between the second bumps and the fourth bumps is greater than or equal to 2 times the effective supporting radius of the single bumps.

The size of the bumps may be selected according to the amount of power generated by the friction generator. Preferably, the height of the bumps is 0.25 mm to 2.5 mm, and the diameter of the bumps is 0.5 mm to 2.5 mm.

Taking the polymer film of polydimethylsiloxane as an example for detailed description, since the material hardness of polydimethylsiloxane is very small, the general Shore hardness is about 20, and when it is subjected to an external force, the bump It can be completely flattened, that is, the two friction interfaces are completely in contact; when the external force is removed, the bumps rebound and the two friction interfaces are separated.

1 is a schematic view of a first embodiment of a polymer film provided by the present invention. As shown in FIG. 1, the polymer film comprises: an array of bumps disposed on a surface of a polymer film, the array of bumps consisting of M rows of bumps and N columns. Bump composition. Wherein, the bump is as shown by the solid circle in FIG. 1, the diameter of the bump is 1.5 mm, and the height of the bump is 1.25 mm. The calculated effective support area of the single bump is the center point of the bump. The area of the center of the circle with a radius of 5 mm is shown by the dotted circle in Fig. 1, that is, the effective support radius of a single bump is 5 mm. The effective support radius of 5 mm is determined according to the specific size of the bump in the embodiment, and cannot be understood as the limitation of the effective support radius. The appropriate effective support radius determined by those skilled in the art according to the actual size of the bump used is The invention can be implemented.

Wherein, the first bump A1 located in the jth column of the i-th row, the second bump A2 located in the j+1th row of the i-1th row, the third bump A3 located in the j+2th column of the i-th row, and The fourth bump A4 located in the j+1th column of the i+1th row forms four vertices of a diamond shape, 2 ≤ i ≤ M-1, 1 ≤ j ≤ N-2. The spacing between the first bump A1 and the second bump A2 is 10 mm, and the spacing between the first bump A1 and the third bump A3 is equal to 17.2 mm, and the second bump A2 and the fourth bump A4 The spacing between the two is equal to 10 mm, that is, the spacing between adjacent bumps forming the four vertices of the diamond is twice the effective supporting radius of the single bump, between the first bump A1 and the third bump A3. The spacing is equal to 3.44 times the effective supporting radius of the single bump, and the spacing between the second bump A2 and the fourth bump A4 is equal to twice the effective supporting radius of the single bump, and the first bump A1 The two bumps A2, the third bumps A3, and the fourth bumps A4 form four vertices of a diamond shape, and the ratio of the effective support area of the bump array disposed on the surface of the polymer film to the surface area of the polymer film is calculated. It is about 91.698%.

2 is a schematic view of a second embodiment of a polymer film provided by the present invention. As shown in FIG. 2, the polymer film comprises: an array of bumps disposed on a surface of a polymer film, the array of bumps consisting of M rows of bumps and N columns. Bump composition. Wherein, the bump is as shown by the solid circle in FIG. 2, the diameter of the bump is 1.5 mm, and the height of the bump is 1.25 mm. The calculated effective support area of the single bump is convex. The center point is the area of the circle with a radius of 5 mm, as indicated by the dashed circle in Fig. 2, that is, the effective support radius of a single bump is 5 mm.

Wherein, the first bump A1 located in the jth column of the i-th row, the second bump A2 located in the j+1th row of the i-1th row, the third bump A3 located in the j+2th column of the i-th row, and The fourth bump A4 located in the j+1th column of the i+1th row forms four vertices of a diamond shape, 2 ≤ i ≤ M-1, 1 ≤ j ≤ N-2. The spacing between the first bump A1 and the second bump A2 is 8.77 mm, and the spacing between the first bump A1 and the third bump A3 is equal to 14.4 mm, and the second bump A2 and the fourth bump A4 The spacing between them is equal to 10 mm, that is, the spacing between adjacent bumps forming the four vertices of the diamond is 1.754 times the effective supporting radius of the single bump, and the first bump A1 and the third bump A3 The spacing between the two is equal to 2.88 times the effective supporting radius of the single bump, and the spacing between the second bump A2 and the fourth bump A4 is equal to twice the effective supporting radius of the single bump, and the first bump A1 at this time The second bump A2, the third bump A3, and the fourth bump A4 form four vertices of the diamond shape, and the effective support area of the bump array disposed on the surface of the polymer film and the surface area of the polymer film are calculated. The ratio is approximately 97.915%.

3 is a schematic view of a third embodiment of a polymer film provided by the present invention. As shown in FIG. 3, the polymer film comprises: an array of bumps disposed on a surface of a polymer film, and the array of bumps has M rows of bumps and N columns. Bump composition. Wherein, the bump is as shown by the solid circle in FIG. 3, the diameter of the bump is 1.5 mm, and the height of the bump is 1.25 mm. The calculated effective support area of the single bump is the center point of the bump. The area of the center of the circle with a radius of 5 mm is shown by the dotted circle in Fig. 3, that is, the effective support radius of the single bump is 5 mm.

Wherein, the first bump A1 located in the jth column of the i-th row, the second bump A2 located in the j+1th row of the i-1th row, the third bump A3 located in the j+2th column of the i-th row, and The fourth bump A4 located in the j+1th column of the i+1th row forms four vertices of a diamond shape, 2 ≤ i ≤ M-1, 1 ≤ j ≤ N-2. The spacing between the first bump A1 and the second bump A2 is 9.37 mm, and the spacing between the first bump A1 and the third bump A3 is equal to 14.4 mm, and the second bump A2 and the fourth bump A4 The spacing between them is equal to 12 mm, that is, the spacing between adjacent bumps forming the four vertices of the diamond is 1.874 times the effective supporting radius of the single bump, and the first bump A1 and the third bump A3 The spacing between the two is equal to 2.88 times the effective supporting radius of the single bump, and the spacing between the second bump A2 and the fourth bump A4 is equal to 2.4 times the effective supporting radius of the single bump, and the first bump A1 at this time Second bump A2, third convex Point A3 and fourth bump A4 form four vertices of a diamond shape, and the ratio of the effective support area of the bump array disposed on the surface of the polymer film to the surface area of the polymer film is calculated to be about 87.567%.

In the prior art, a plurality of bumps disposed in the array of bumps on the surface of the polymer film are mostly arranged in a square arrangement. FIG. 4 is a schematic view of a polymer film in the prior art, as shown in FIG. The polymer film comprises: a bump array disposed on a surface of the polymer film, and the bump array is composed of a plurality of bumps arranged in a square arrangement. Wherein, the bump is as shown by the solid circle in FIG. 4, the diameter of the bump is 1.5 mm, and the height of the bump is 1.25 mm. The calculated effective support area of the single bump is the center point of the bump. The area of the center of the circle with a radius of 5 mm is shown by the dotted circle in Fig. 4, that is, the effective support radius of the single bump is 5 mm. When the lateral pitch and the longitudinal pitch of the bumps were respectively 10 mm, the ratio of the effective support area of the bump array disposed on the surface of the polymer film to the surface area of the polymer film was calculated to be 78.5%. Therefore, the polymer film provided by the present invention effectively increases the effective support area of the bump array compared to the arrangement of the plurality of bumps in a square arrangement, thereby applying the polymer film to the friction generator. Helps increase the power generation efficiency of friction generators.

Alternatively, the material of the polymer film may be polydimethylsiloxane, polyimide, aniline formaldehyde resin, polyoxymethylene, ethyl cellulose, polyamide, melamine formaldehyde, polyethylene glycol succinate , cellulose, cellulose acetate, polyethylene adipate, diallyl polyphthalate, fiber sponge, polyurethane elastomer, styrene propylene copolymer, styrene butadiene copolymer, Rayon, polymethyl, methacrylate, polyvinyl alcohol, polyester, polyisobutylene, polyurethane flexible sponge, polyethylene terephthalate, polyvinyl butyral, formaldehyde phenol, neoprene, Butadiene propylene copolymer, natural rubber, polyacrylonitrile, acrylonitrile vinyl chloride or polyvinyl propylene glycol carbonate. A person skilled in the art can select a material for the polymer film according to actual needs.

The present invention also provides a friction generator comprising the above polymer film, the friction generator having two surfaces constituting a friction interface, wherein the surface of the polymer film having the bumps is the two surfaces constituting the friction interface One of the surfaces. The friction generator uses the above polymer film to help improve the power generation efficiency of the friction generator and enhance the signal output.

The present invention also provides a physiological signal acquisition device using the above polymer film. Wherein, the physiological signal collecting device may comprise a friction generator, and the physiological signal collecting device applies the above The polymer film helps to improve the signal output of the physiological signal acquisition device.

The surface of the polymer film provided by the embodiment of the present invention is provided with a bump array composed of M rows of bumps and N columns of bumps, and a plurality of bumps in the bump array are arranged in a rhombic arrangement manner, and a plurality of Compared with the arrangement of the bumps in a square arrangement, the effective support area of the bump array is effectively increased, which helps to improve the signal output of the friction generator and the physiological signal acquisition device using the polymer film.

FIG. 5 is a schematic structural diagram of Embodiment 4 of a physiological signal acquisition sensing strip provided by the present invention. As shown in FIG. 5, the physiological signal acquisition sensing strip includes: a friction generator 100, an insulating layer 200, a shielding layer 300, and an encapsulation layer. 400 and output electrode 500. Further, according to the embodiments of the present invention, the above components are specifically explained:

Friction Generator 100: According to an embodiment of the present invention, the friction generator 100 includes: a first electrode layer 110, a reinforcement layer 120, a first polymer insulation layer 130 composed of the above polymer film, and a first layer Two electrode layer 140. A reinforcing layer is disposed between the first electrode layer of the friction generator and the first polymer insulating layer, and when the friction interface between the second electrode layer and the first polymer insulating layer generates an induced charge, The reinforcing layer can reduce the neutralization rate of the electrons generated by the friction and the induced positive charge under the action of the internal electric field, thereby increasing the density of the induced charges, thereby increasing the potential difference between the first electrode layer and the second electrode layer, thereby The amplitude of the sensor band output signal increases.

According to an embodiment of the present invention, the first electrode layer 110 and the second electrode layer 140 are each formed of an electrode material. Therefore, the physiological signal acquisition sensor belt has good flexibility, and is convenient to adjust the shape according to the object to be detected and the part to be detected, so that the physiological signal acquisition sensor belt is closely attached to the to-be-detected portion, so that the detection effect is better.

According to some embodiments of the present invention, the surface of the first polymer insulating layer 130 adjacent to the first electrode layer 110 is provided with a textured structure. Thereby, the first polymer polymer insulating layer has a large surface area close to the surface of the first electrode layer, so that the bonding strength of the glue to the surface can be improved when it is bonded to the reinforcing layer.

In addition, it is to be noted that the shape of the uneven structure is not particularly limited as long as the surface area of the first polymer insulating layer close to the surface of the first electrode layer can be increased. According to some embodiments of the present invention, the relief structure may be a pattern or a point where protrusions, depressions, or irregularities coexist. Array structure.

According to an embodiment of the present invention, the two surfaces of the first polymer insulating layer 130 opposite to the second electrode layer 140 constitute a friction interface. The first polymer polymer insulating layer is electrically negative, the friction is easy to obtain electrons, and the second electrode layer is easy to lose electrons, and the friction between the two is easy to generate an induced charge, which constitutes a friction interface.

According to an embodiment of the present invention, at least one of the two surfaces constituting the friction interface may be provided with a convex array structure. Thereby, the contact area of the two surfaces is significantly increased, so that more induced charges can be generated by the friction, the density of the induced charges is increased, and thus, the potential difference between the first electrode layer and the second electrode layer is increased, thereby The amplitude of the sensor band output signal increases.

According to an embodiment of the present invention, the carrier concentration of the enhancement layer 120 is not greater than the carrier concentration of the first polymer insulating layer 130, and the electron mobility of the enhancement layer 120 is not greater than the first polymer insulation layer. 130 electron mobility. Therefore, when the two friction interfaces generate an induced charge, the enhancement layer can reduce the neutralization rate of the electrons generated by the friction and the induced positive charge under the action of the internal electric field, thereby increasing the density of the induced charge to improve the first electrode layer and the second electrode. The potential difference between the layers increases the amplitude of the sensor strip output signal.

According to an embodiment of the present invention, the raw material for preparing the reinforcing layer may be bonded to the first high molecular polymer insulating layer after being molded by an injection molding or calendering process. Thereby, the preparation method is simple, and the bonding strength between the reinforcing layer and the first polymer insulating layer is high.

According to an embodiment of the invention, the reinforcement layer 120 is formed of polytetrafluoroethylene. Thereby, the electronegativity of the enhancement layer is strong, and the neutralization rate of the electrons generated by the friction and the induced positive charge under the action of the internal electric field is significantly lowered, and the amplitude of the output signal of the sensor band is significantly increased.

According to an embodiment of the invention, the reinforcing layer 120 has a thickness of 0.03 mm to 2 mm. Thereby, the physiological signal acquisition sensor strip has a suitable thickness and good output characteristics.

FIG. 6 is a schematic structural diagram of Embodiment 5 of the enhancement layer provided by the present invention. As shown in FIG. 6 , the reinforcement layer 120 may have a hollow structure 121 . Thus, by providing a hollow structure, the glue enters the hollow structure during the bonding process, thereby making the bonding strength of the first polymer insulating layer and the reinforcing layer greater.

According to an embodiment of the present invention, the shape of the hollow structure 121 is not particularly limited and may be Adjustments are needed. For example, the hollow structure 121 may have various shapes such as a circle, an ellipse, an interdigitated shape, a rhombus shape, and a triangular shape.

As shown in Figure 6, in accordance with an embodiment of the present invention, the hollow structures are arranged in an array. Thereby, more glue enters into the hollow structure during the bonding process, so that the first polymer polymer insulating layer and the reinforcing layer are more tightly bonded.

According to some embodiments of the present invention, the spacing of the adjacent hollow structures 121 may be from 5 mm to 25 mm.

According to some embodiments of the invention, the hollow structure 121 may have a width of from 1 mm to 5 mm. Thereby, the reinforcing layer is made to have sufficient strength and has a sufficient contact area with the glue at the time of bonding, thereby securing the bonding strength.

FIG. 7 is a schematic structural diagram of Embodiment 6 of the physiological signal acquisition sensing strip provided by the present invention. As shown in FIG. 7, the friction generator 100 further includes: a second polymer insulating layer 150 composed of the polymer film, The second polymer insulating layer 150 is different from the first polymer insulating layer 130. The second polymer insulating layer 150 is disposed on the first polymer insulating layer 130 and the second. Between the electrode layers 140, the two surfaces of the second polymer insulating layer 150 opposite to the first polymer insulating layer 130 constitute a friction interface, and at least one surface is provided with a convex array structure. Therefore, the friction generator generates frictional charge by the first polymer insulating layer and the second polymer insulating layer having different materials, thereby changing the capacitance between the first electrode layer and the second electrode layer, thereby A potential difference is generated between the two electrodes. It should be noted that the shape of the bump array structure is not particularly limited as long as the contact area between the two surfaces, that is, the first polymer insulating layer and the second polymer insulating layer can be increased.

Insulation Layer 200: Insulation layer 200 is coated on the outer surface of friction generator 100 in accordance with an embodiment of the present invention. Therefore, not only waterproofing and moisture proof, but also the process of moisture-proof treatment on the outermost surface is eliminated, and the packaging problem of the friction generator is solved, and the influence of external environmental factors on the power generation of the friction generator is avoided, so that the friction generator The signal is more sensitive and more stable.

According to an embodiment of the invention, the insulating layer is a flexible material. Therefore, the physiological signal acquisition sensor belt has good flexibility, and is convenient to adjust the shape according to the object to be detected and the part to be detected, so that the physiological signal acquisition sensor belt is closely attached to the to-be-detected portion, so that the detection effect is better.

Shield 300: The shield layer 300 is coated on the outer surface of the insulating layer 200 in accordance with an embodiment of the present invention. Thus, the shielding layer enables the physiological signal acquisition sensor belt to have a self-shielding function, which not only increases the stability of the output electrical signal, but also prolongs the service life.

Encapsulation layer 400: The encapsulation layer 400 is coated on the outer surface of the shield layer 300 in accordance with an embodiment of the present invention. The encapsulation layer 400 not only protects the internal structure (ie, the friction generator 100, the insulation layer 200, and the shielding layer 300), but also avoids external environmental factors affecting the normal operation of the internal structure, and also ensures the cleanness of the internal structure thereof. The physiological monitoring sensor strip can also be fixed as needed.

According to an embodiment of the invention, the encapsulation layer 400 is formed of a microfiber material.

According to some embodiments of the present invention, when the outer surface of the shielding layer 300 is coated with the encapsulation layer, two encapsulation layer intermediates (ie, the complete encapsulation layer is divided into upper and lower parts) may be provided first, and the insulating layer and the shielding layer are provided. The coated friction generator is disposed between the two parts of the encapsulating layer intermediate body, and then the heat source is respectively pressed against the upper and lower portions of the encapsulating layer raw materials, and the physiological signal collecting sensing strip with the encapsulating layer is formed by hot pressing. According to some embodiments of the present invention, hot-melt bonding is employed in the hot pressing process, wherein the hot press shaping time is 15 seconds to 25 seconds, and the hot press shaping temperature is 65 ° C to 120 ° C.

Output electrode 500: According to an embodiment of the present invention, the output electrode 500 includes a first extraction electrode 510 and a second extraction electrode 520, wherein the first extraction electrode 510 penetrates the insulating layer 200, the shielding layer 300, and the encapsulation layer 400 and An electrode layer 110 is connected, the second extraction electrode 520 penetrates the encapsulation layer 400 and is connected to the shielding layer 300, or the second extraction electrode 520 passes through the insulating layer 200, the shielding layer 300 and the encapsulation layer 400, and the shielding layer 300 and the second electrode. Layers 140 are connected. Thereby, the electrical signal generated by the friction generator is outputted by the output electrode.

FIG. 8 is a schematic structural diagram of Embodiment 7 of a physiological signal acquisition sensing strip provided by the present invention. As shown in FIG. 8 , the physiological signal acquisition sensing strip further includes: a micro-motion enhancement module 600, and the micro-motion enhancement module 600 is disposed at Between the shield layer 300 and the encapsulation layer 400. It should be noted that the output electrodes in FIG. 8 are not shown. Therefore, the micro-motion strengthening module can effectively avoid the problem that the local force of the friction generator is increased, and when the local deformation is too large, the friction interface adheres to each other for too long, and the friction interface separation speed is slow, and the micro-motion strengthening module makes the external force. It is applied evenly on the friction generator to reduce the local deformation of the physiological signal acquisition sensor belt, accelerate the separation speed between the friction layers, and improve the output sensitivity of the sensor belt.

According to an embodiment of the invention, the fretting reinforcement modules 600 are plural and arranged in an array. Thereby, the local shape change of the physiological signal acquisition sensor strip is small, the separation speed between the friction layers is faster, and the output sensitivity of the sensor strip is higher.

According to an embodiment of the invention, the fretting reinforcement module 600 is selected from the group consisting of ethylene-vinyl acetate copolymer, polyurethane, expandable polyethylene, foam, styrene butadiene rubber, polyethylene and EPDM rubber. At least one of the formed.

In accordance with a preferred embodiment of the present invention, the fretting reinforcement module 600 is formed from an ethylene vinyl acetate copolymer.

According to some embodiments of the present invention, when the outer surface of the shielding layer 300 is coated with the encapsulation layer, the encapsulation layer intermediate body (ie, the complete encapsulation layer is divided into upper and lower portions) may be covered by the insulating layer and the shielding layer. The friction generator is disposed between the two encapsulation intermediate bodies and the micro-motion enhancement module, and then the heat source is respectively pressed to the two encapsulation layer intermediates, thereby interposing the encapsulation layer intermediate, the micro-motion reinforcement module and the insulation layer and shielding The layer-covered friction generators are subjected to hot press shaping to form a physiological signal acquisition sensing strip. The encapsulation layer is an outer surface of the physiological signal acquisition sensor strip, and the micro-motion enhancement module may be multiple and arranged at a certain interval distance, and the micro-motion reinforcement module is disposed such that the outer side of the encapsulation layer is a surface provided with a convex and a concave interval. . According to some embodiments of the present invention, hot-melt bonding is employed in the hot pressing process, wherein the hot press shaping time is 15 seconds to 25 seconds, and the hot press shaping temperature is 65 ° C to 120 ° C.

According to an embodiment of the invention, the physiological signal acquisition sensor strip further comprises: a monitoring circuit (not shown) connected to the output electrode for collecting and processing the physiological electrical signal output by the output electrode. Thereby, it is convenient to analyze and count the physiological electrical signals.

Here, the use of the physiological signal acquisition sensor strip is described. The physiological signal acquisition sensor strip of the embodiment of the present invention is based on the principle of a friction generator. The physiological signal acquisition sensor strip can be used not only to monitor the frequency and/or waveform of human breathing, heartbeat, but also to monitor other physiological behaviors and motion signals. The physiological signal acquisition sensing strip is laid or embedded on a mattress capable of normal monitoring of the physiological signal acquisition sensing belt, so that the chest of the human body corresponds to the physiological signal acquisition mattress area where the sensing belt is located, and the human body can be Physiological signals are monitored. Further, taking sleep physiological monitoring as an example, when a person is in a quiet sleep, a physiological electrical signal (such as a voltage signal) sensed and output by the physiological signal acquisition sensing band can reflect the breathing and heartbeat of the human body in a quiet sleep. Frequency and / or waveform; When there is an action such as turning over, getting out of bed, or snoring during sleep, the physiological signal acquisition sensor band will output a physiological electrical signal that is significantly different from that in a quiet sleep. The above signals provide accurate and reliable analysis for sleep quality and human health. Data foundation.

Further, based on this, according to still another aspect of the present invention, the present invention provides a physiological monitoring mattress. According to a specific embodiment of the invention, the physiological monitoring mattress comprises: a mattress body and the aforementioned physiological signal acquisition sensing strip, the physiological signal acquisition sensing strip being disposed inside and/or outside the mattress body.

Further, according to still another aspect of the present invention, the present invention further provides a physiological monitoring pillow. According to an embodiment of the invention, the physiological monitoring pillow comprises: a pillow body and the aforementioned physiological signal acquisition sensing belt, and the physiological signal acquisition sensing belt is disposed inside and/or outside the pillow body.

Further, according to still another aspect of the present invention, the present invention provides a physiological monitoring system. According to an embodiment of the invention, the system comprises: the aforementioned physiological monitoring mattress or physiological monitoring pillow and the terminal device, wherein the terminal device is connected to a physiological monitoring mattress or a physiological monitoring pillow, and the terminal device is used for physiological monitoring of the mattress or Physiological electrical signals output from the physiological monitoring pillow were statistically analyzed and statistical analysis results were displayed.

The physiological signal acquisition sensing strip with the polytetrafluoroethylene (PTFE) reinforcing layer of the embodiment of the present invention and the sensor strip without the reinforcing layer but other structures are respectively connected to the oscilloscope, the human heart and the breathing and the like. The body dynamic signal is detected, wherein the physiological signal acquisition sensor belt with the polytetrafluoroethylene (PTFE) reinforcing layer of the embodiment of the invention has a friction generator that sequentially sets a first electrode layer formed of aluminum, and has a thickness of 0.1 mm; a PTFE reinforcing layer having a thickness of 0.2 mm; a first polymer insulating layer formed of polydimethylsiloxane having a thickness of 0.2 mm; and a second polymer formed of a polyethylene terephthalate film The insulating layer has a thickness of 0.1 mm; the second electrode layer formed of copper has a thickness of 0.1 mm.

The above two sets of sensor strips were placed at four test points: point A was located 5 cm directly above the heart, point B was opposite the heart position, point C was located 5 cm directly below the heart, and point D was located 10 cm directly below the heart for monitoring. . The output voltage of the sensor strip without the reinforcement layer is as shown in FIG. 9, and the output voltage of the physiological signal acquisition sensor strip with the PTFE enhancement layer is as shown in FIG. 10, and the physiology of the embedded PTFE reinforcement layer of the embodiment of the present invention is shown. The signal acquisition sensor strip has an output signal that is approximately 20% higher than that of the sensor strip without the enhancement layer.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means a specific feature described in connection with the embodiment or example. A structure, material or feature is included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

While the embodiments of the present invention have been shown and described, the embodiments of the invention may The scope of the invention is defined by the claims and their equivalents.

Claims

A polymer film, comprising: an array of bumps disposed on a surface of the polymer film, the array of bumps being composed of M rows of bumps and N columns of bumps;

Wherein the first bump located in the jth column of the i-th row, the second bump located in the j+1th row of the i-1th row, the third bump located in the j+2th column of the i-th row, and the i-th The fourth bump of the j+1th column of +1 row forms the four vertices of the diamond; 2 ≤ i ≤ M-1, 1 ≤ j ≤ N-2; the spacing between the bumps forming the four vertices of the diamond is based on Set by the effective support radius of a single bump.
The polymer film according to claim 1, wherein a pitch between adjacent bumps forming four vertices of the rhombus is 1-5 times an effective support radius of the single bump.
The polymer film according to claim 2, wherein a pitch between the first bump and the third bump is greater than or equal to 2 times an effective support radius of a single bump, the second The spacing between the bumps and the fourth bumps is greater than or equal to twice the effective support radius of the individual bumps.
The polymer film according to claim 3, wherein a spacing between the first bump and the third bump is 3.44 times an effective supporting radius of a single bump, the second bump The spacing between the fourth bump and the fourth bump is twice the effective support radius of the single bump.
The polymer film according to claim 3, wherein a spacing between the first bump and the third bump is 2.88 times an effective support radius of a single bump, the second bump The spacing between the fourth bump and the fourth bump is twice the effective support radius of the single bump.
The polymer film according to claim 3, wherein a spacing between the first bump and the third bump is 2.88 times an effective support radius of a single bump, the second bump The spacing between the fourth bump and the fourth bump is 2.4 times the effective support radius of the single bump.
The polymer film according to any one of claims 1 to 6, wherein the height of the bump is 0.25 mm to 2.5 mm, and the diameter of the bump is 0.5 mm to 2.5 mm.
The polymer film according to any one of claims 1 to 6, wherein the material of the polymer film is polydimethylsiloxane, polyimide, aniline formaldehyde resin, polyoxymethylene, ethyl Cellulose, polyamide, melamine formaldehyde, polyethylene glycol succinate, cellulose, cellulose acetate, polyethylene adipate, diallyl polyphthalate, fiber sponge, polyurethane Flexibility , styrene propylene copolymer, styrene butadiene copolymer, rayon, polymethyl, methacrylate, polyvinyl alcohol, polyester, polyisobutylene, polyurethane flexible sponge, polyethylene terephthalate Ester, polyvinyl butyral, formaldehyde phenol, neoprene, butadiene propylene copolymer, natural rubber, polyacrylonitrile, acrylonitrile vinyl chloride or polyvinyl propylene glycol carbonate.
A friction generator comprising the polymer film of any of claims 1-8, wherein the friction generator has two surfaces constituting a friction interface, wherein the polymer film has bumps The surface is one of the two surfaces constituting the friction interface.
A physiological signal acquisition device using the polymer film of any of claims 1-8.
A physiological signal acquisition sensor belt, comprising:

a friction generator comprising a first electrode layer, a reinforcing layer, a first polymer insulating layer and a second electrode layer which are sequentially stacked, wherein the first polymer insulating layer is controlled by a right The polymer film composition of claim 1-8;

An insulating layer covering the outer surface of the friction generator;

a shielding layer, the shielding layer is coated on an outer surface of the insulating layer;

An encapsulation layer, the encapsulation layer being coated on an outer surface of the shielding layer;

An output electrode, the output electrode includes a first extraction electrode and a second extraction electrode, the first extraction electrode penetrating into the insulating layer, the shielding layer and the encapsulation layer and connected to the first electrode layer, The second extraction electrode is connected to the shielding layer through the encapsulation layer, or the second extraction electrode passes through the insulating layer, the shielding layer and the encapsulation layer, and the shielding layer and the The second electrode layer is connected.
The physiological signal acquisition sensor strip according to claim 11, wherein the two surfaces of the first polymer insulating layer opposite to the second electrode layer constitute a friction interface.
The physiological signal acquisition sensor strip according to claim 11, wherein a carrier concentration of the enhancement layer is not greater than a carrier concentration of the first polymer insulation layer, and the enhancement layer The electron mobility is not greater than the electron mobility of the first polymer insulating layer.
The physiological signal acquisition sensor strip according to claim 13, wherein said said The reinforcing layer is selected from the group consisting of polytetrafluoroethylene, polyimide, polycarbonate, polystyrene, polyvinylidene fluoride, rubber, polyethylene, polypropylene, polyvinyl chloride, silica gel, polyamide, polyvinyl alcohol, Formed from at least one of a polychlorotrifluoroethylene and a perfluoroethylene propylene copolymer.
The physiological signal acquisition sensor strip according to claim 11, wherein the reinforcing layer has a thickness of 0.03 mm to 2 mm.
The physiological signal acquisition sensor strip of claim 11 wherein said enhancement layer has a hollowed out structure.
The physiological signal acquisition sensing strip according to claim 16, wherein the hollow structures are arranged in an array.
The physiological signal acquisition sensing strip according to claim 17, wherein the spacing between the adjacent hollow structures is 5 mm to 25 mm.
The physiological signal acquisition sensor strip according to claim 16, wherein the hollow structure has a width of 1 mm to 5 mm.
The physiological signal acquisition sensor belt according to claim 11, wherein the friction generator further comprises:

a second polymer insulating layer, the second polymer insulating layer is disposed between the first polymer insulating layer and the second electrode layer, and the second polymer insulating layer The two surfaces opposite to the first polymer insulating layer constitute a friction interface.
The physiological signal acquisition sensor strip according to claim 20, wherein the second polymer insulating layer is composed of the polymer film of claims 1-8.
The physiological signal acquisition sensor strip according to claim 11, further comprising:

a fretting reinforcement module, the fretting reinforcement module being disposed between the shielding layer and the encapsulation layer.
The physiological signal acquisition sensor strip according to claim 22, wherein the micro-motion enhancement modules are pluralityed and arranged in an array.
The physiological signal acquisition sensor strip according to claim 22, wherein said The fretting reinforcement module is formed of at least one selected from the group consisting of ethylene-vinyl acetate copolymer, polyurethane, expandable polyethylene, foam, styrene butadiene rubber, polyethylene, and ethylene propylene diene monomer.
The physiological signal acquisition sensor strip according to claim 11, further comprising:

A monitoring circuit is coupled to the output electrode for collecting and processing a physiological electrical signal output by the output electrode.
A physiological monitoring system, comprising:

The physiological signal acquisition sensor strip of any of claims 11-25;

The terminal device is connected to the physiological signal acquisition sensor strip, and the terminal device is configured to perform statistical analysis on the physiological electrical signal output by the physiological signal acquisition sensor strip, and display statistical analysis results.
A physiological monitoring mattress characterized by comprising:

Mattress body;

The physiological signal acquisition sensor strip according to any one of claims 11 to 25, wherein the physiological signal acquisition sensor strip is disposed inside and/or outside the mattress body.
A physiological monitoring pillow, characterized in that it comprises:

Pillow body;

The physiological signal acquisition sensor strip according to any one of claims 11 to 25, wherein the physiological signal acquisition sensor strip is disposed inside and/or outside the pillow body.
A physiological monitoring system, comprising:

The physiological monitoring mattress of claim 27 or the physiological monitoring pillow of claim 28;

a terminal device, the terminal device is connected to the physiological monitoring mattress or the physiological monitoring pillow, and the terminal device is configured to perform statistical analysis on physiological electrical signals output by the physiological monitoring mattress or the physiological monitoring pillow, And display the statistical analysis results.