CN215605659U - Graphene metal film sensor for sleep monitoring and mattress, mattress or bed board with same - Google Patents
Graphene metal film sensor for sleep monitoring and mattress, mattress or bed board with same Download PDFInfo
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- CN215605659U CN215605659U CN202022740953.5U CN202022740953U CN215605659U CN 215605659 U CN215605659 U CN 215605659U CN 202022740953 U CN202022740953 U CN 202022740953U CN 215605659 U CN215605659 U CN 215605659U
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Abstract
The utility model discloses a graphene metal film sensor for sleep monitoring, which comprises a sensor module and a sensor module, wherein the sensor module comprises: a pressure sensing unit; the interlayer comprises a body and a first hole body, and the body is provided with a pressure sensing unit; the bottom plate is arranged on one side of the first surface of the interlayer, a bulge and a first groove are arranged on the same surface of the bottom plate, and the position and the size of the bulge are matched with those of the first hole body; the top plate is arranged on one side of the second surface of the interlayer and provided with a central hole and a first groove; the elastic body is provided with a third surface and a fourth surface which are opposite, the third surface is fixed on the first surface, one end of the elastic body close to the fourth surface is inserted into the first groove, and the shape and the size of the first groove are the same as those of the elastic body which is not subjected to elastic deformation; and the pressing block is arranged on the second surface of the interlayer and extends out through the central hole of the top plate. The utility model also discloses a mattress, a mattress or a bed board containing the sensor.
Description
Technical Field
The utility model relates to the technical field of sensors, in particular to a graphene metal film sensor for sleep monitoring and a product with the graphene metal film sensor.
Background
With the continuous improvement of the requirements of people on health and living quality, sleep monitoring such as heartbeat, respiration and sleeping posture becomes the demand of people for pursuing healthy life. Sensors are one of the options for implementing sleep monitoring.
The core technology of the mainstream sensor products in the current market is mainly as follows: 1) the optical fiber sensor changes the wavelength of light according to the measurement of physical change quantity, such as temperature and pressure. The disadvantages are that: the size is large, an optical signal is needed, a light source and a light source generator are needed, once a loop is damaged or the light source cannot be transmitted, a measurement signal cannot be recovered, the test cannot be completed, and the cost is high; the structure is complex, two sets of sensors are needed, and the temperature and the pressure are coupled; the calculation is complicated, and 4 parameters of two groups of sensors and 2 monitoring quantities need to be known at the same time. 2) The piezoelectric sensor is used for measuring the physical variation quantity, and the physical variation quantity causes the charge distribution in the material to change. The disadvantages are that: the static posture and the static physical quantity cannot be measured; the interference is large and is easily influenced and interfered by static charge and the like; the output signal is nonlinear, which is very unfavorable for the post-computation test. 3) The intelligent bracelet-photoelectric sensor converts light reflection into an electric signal according to the fluctuation of light transmittance in blood, and converts the electric signal into a heart rate by applying a certain algorithm. The disadvantages are that: the method needs light irradiation and has large interference, and belongs to secondary signal monitoring; reflecting light, converting the light into an electric signal according to the fluctuation of light transmittance in blood, and converting the electric signal into a heart rate by using a certain algorithm; only the blood heart rate can be measured, and the measurement of sleeping posture movement and the like cannot be met. 4) Electrocardiosignal measurement, like ECG (electrocardiogram), uses the potential difference of the human body for heart rate detection. The disadvantages are that: the human body needs to be connected into a conductor to form a current loop, so that the human body is damaged, the method is not a health monitoring method, and the measurement needs to be completed by invading the human body.
SUMMERY OF THE UTILITY MODEL
Therefore, it is necessary to provide a new graphene metal thin film sensor for sleep monitoring and an application thereof, aiming at the problem that the conventional sensor is not suitable for sleep monitoring.
A graphene metal thin film sensor for sleep monitoring, comprising a sensor module, the sensor module comprising:
a pressure sensing unit, the pressure sensing unit comprising in sequence: the protective layer covers the part of the patterned sensitive layer which is not shielded by the electrode, and the patterned sensitive layer is a mixed layer of graphene and metal;
the interlayer comprises a body and a first hole body, wherein the body comprises a first surface and a second surface which are opposite, the first hole body penetrates through the first surface and the second surface, and pressure sensing units are fixedly arranged on the opposite positions of the first surface and the second surface of the body respectively;
the bottom plate is arranged on one side of the first surface of the interlayer, a bulge and a first groove are arranged on the same surface of the bottom plate, the bulge is arranged outside the first groove, and the position and the size of the bulge are matched with those of the first hole body;
the top plate is arranged on one side of the second surface of the interlayer, is provided with a central hole and is provided with a second groove, and the second groove is used for accommodating the protrusion;
the elastic body is provided with a third surface and a fourth surface which are opposite, the third surface is fixed on the first surface, one end of the elastic body close to the fourth surface is inserted into the first groove of the bottom plate, and the shape and the size of the first groove are the same as those of the elastic body which is not subjected to elastic deformation;
a press block fixedly disposed on the second surface of the interlayer and protruding through the central hole of the top plate.
In one embodiment, an even number of the pressure sensing units are respectively arranged on the first surface and the second surface, and the even number of the pressure sensing units are symmetrically arranged.
In one embodiment, the depth of the first groove gradually increases from the edge of the bottom plate to the center of the bottom plate.
In one embodiment, the first recess is generally arcuate.
In one embodiment, the compact is in the shape of a segment of a sphere.
In one embodiment, four first hole bodies are arranged on the interlayer in a centrosymmetric manner, four protrusions corresponding to the first hole bodies are arranged on the bottom plate, a first transverse thin arm and a first longitudinal thin arm are respectively formed between two first hole bodies which are adjacent in the transverse direction and the longitudinal direction, and a second transverse thin arm and a second longitudinal thin arm are respectively formed between two protrusions which are adjacent in the transverse direction and the longitudinal direction.
In one embodiment, the first groove is formed in the second transverse thin arm and the second longitudinal thin arm, the first groove is a cross-shaped first groove, and the elastic body is a cross-shaped elastic body.
In one embodiment, two pressure sensing units are respectively arranged on the first surface and the second surface of the interlayer, and the two pressure sensing units are symmetrically arranged at two ends of the first longitudinal thin arm.
In one embodiment, a total of four of the pressure sensing units of the first and second surfaces are connected as a wheatstone bridge.
In one embodiment, the material of the interlayer is at least one of polyimide and polyester; and/or the material of the bottom plate is selected from at least one of polyimide and polyester; and/or the material of the top plate is selected from at least one of polyimide and polyester; and/or the material of the briquetting is selected from at least one of polyimide and polyester; and/or the material of the elastomer is selected from rubber, preferably silicon rubber.
In one embodiment, the pressure sensor further comprises a signal processing module, the signal processing module is electrically connected with the pressure sensing unit, and the signal processing module is used for converting the pressure signal of the pressure sensing unit into an electric signal.
In one embodiment, the number of the sensor modules is multiple, and the multiple sensor modules are arranged in an array and are respectively and electrically connected with the signal processing module.
The application of the graphene metal film sensor for sleep monitoring in monitoring heartbeat, respiration or sleeping posture is provided.
The mattress, the mattress or the bed board containing the graphene metal film sensor for sleep monitoring.
The utility model monitors signals through the deformation of the resistance grid of the pressure sensing unit, is a direct monitoring method, can improve the monitoring accuracy and sensitivity, avoids errors caused by electromagnetic interference and secondary signal transformation, and improves the precision of signal change. The measuring method only needs to measure and obtain the voltage output signal value caused by the resistance grid deformation, completes monitoring through judging the signal amplitude and the signal period, and does not need specific numerical value, so the measuring method is simple in measuring form and less in measuring parameters. The method is simple, easy to implement, low in cost and free of precise instruments and analysis methods. The graphene metal film sensor for sleep monitoring can simultaneously measure the heartbeat, the respiration rate, the sleep posture and the sleep movement direction.
Drawings
FIG. 1 is a schematic structural diagram of a sensor module according to an embodiment of the present invention;
FIG. 2 is a schematic view of a composite layered structure incorporating an elastomer and a compact according to an embodiment of the utility model;
FIG. 3 is a schematic structural view of a sandwich with a pressure sensing unit mounted thereon according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a graphene metal thin film sensor for sleep monitoring according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a sandwich according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a base plate according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of an elastomer according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a top plate according to an embodiment of the utility model.
Detailed Description
To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 3, an embodiment of the utility model provides a graphene metal thin film sensor for sleep monitoring, including a sensor module 100, where the sensor module 100 includes:
a pressure sensing unit 110;
the interlayer 120 comprises a body and a first hole body 122, wherein the body comprises a first surface and a second surface which are opposite, the first hole body 122 penetrates through the first surface and the second surface, and the pressure sensing units 110 are respectively and fixedly arranged on the opposite positions of the first surface and the second surface of the body;
a bottom plate 130 disposed on one side of the first surface of the interlayer 120, wherein a protrusion 132 and a first groove 134 are disposed on the same surface of the bottom plate 130, the protrusion 132 is disposed outside the first groove 134, and the position and size of the protrusion 132 are adapted to the first hole 122;
a top plate 140 disposed on one side of the second surface of the interlayer 120, wherein the top plate 140 is provided with a central hole 144 and a second groove 142, and the second groove 142 is used for accommodating the protrusion 132;
an elastic body 150 having a third surface and a fourth surface opposite to the third surface, wherein the third surface is fixed on the first surface, and one end of the elastic body near the fourth surface is inserted into the first groove 134 of the base plate 130, and the shape and size of the first groove 134 are the same as those of the elastic body 150 which is not elastically deformed;
a pressing block 160 fixed on the second surface of the interlayer 120 and protruding through the central hole 144 of the top plate 140.
The utility model monitors signals through the deformation of the resistance grid of the pressure sensing unit 110, is a direct monitoring method, can improve the monitoring accuracy and sensitivity, avoids errors caused by electromagnetic interference and secondary signal transformation, and improves the precision of signal change. The measuring method only needs to measure and obtain the voltage output signal value caused by the resistance grid deformation, completes monitoring through judging the signal amplitude and the signal period, and does not need specific numerical value, so the measuring method is simple in measuring form and less in measuring parameters. The method is simple, easy to implement, low in cost and free of precise instruments and analysis methods. The graphene metal film sensor for sleep monitoring can simultaneously measure the heartbeat, the respiration rate, the sleep posture and the sleep movement direction.
The graphene metal film sensor for sleep monitoring can be used for monitoring heartbeat, respiration or sleeping posture.
The graphene metal film sensor for sleep monitoring can be arranged in the mattress, the mattress or the bed board.
Referring to fig. 4, in some embodiments, the graphene metal thin film sensor for sleep monitoring further includes a signal processing module 200, the signal processing module 200 is electrically connected to the pressure sensing unit 110, and the signal processing module 200 is configured to convert a pressure signal of the pressure sensing unit 110 into an electrical signal.
In an embodiment, the signal processing module 200 includes a signal collector 210, an amplifier 220, a filter 230, an a/D converter 240 and a PC terminal 250, which are connected in sequence, the sensor module 100 transmits the monitoring signal to the signal collector 210 through the pressure sensing unit 110, and transmits the monitoring signal to the PC terminal 250 through the amplifier 220, the filter 230 and the a/D converter 240 in sequence, and after comparing the monitoring data obtained by the PC with the big data, the judgment and the suggested measures of the corresponding sleep monitoring result can be obtained after comparing the monitoring data obtained by the PC with the big data.
In some embodiments, an even number of the pressure sensing units 110 are respectively disposed on the first surface and the second surface, and the even number of the pressure sensing units 110 are symmetrically arranged. The plurality of pressure sensors can increase the position precision of pressure sensing, amplify local and overall changes of pressure and improve the accuracy of real-time monitoring. The symmetrical arrangement can reduce the position deviation and is beneficial to subsequent signal processing and analysis.
In some embodiments, the pressure sensing cell 110 is a multilayer film structure comprising, in order: the protective layer covers the part of the patterned sensitive layer which is not shielded by the electrode.
The multilayer thin film structure can be prepared by a vapor deposition method. The sensitive layer has a pattern including a thin film resistor gate and a thin film wire connected thereto. The resistive gate pattern of the sensitive layer may be obtained by an etching method. One end of the thin film wire is connected with the resistance grid, and the other end of the thin film wire is connected with the input end of the signal collector in the signal processing module 200.
In some embodiments, the patterned sensitive layer is a mixed layer of graphene and a metal. Specifically, the metal may be selected from one or more of nickel-chromium alloy and constantan.
Further, the thickness of the patterned sensitive film layer is 100 nm-1000 nm.
Further, the material of the insulating layer may be Al2O3、SiO2、Si3N4And YSZ with a thickness of 1-5 μm.
Further, the material of the protective layer may be Al2O3、SiO2、Si3N4And YSZ with a thickness of 1-5 μm.
The pressure sensing unit 110 is a conventional thin film pressure sensor structure, and will not be described herein.
Referring to fig. 5 to 6, in an embodiment, four first holes 122 are disposed on the interlayer 120. The bottom plate 130 is provided with four protrusions 132 corresponding to the first hole 122. The four protrusions 132 are positioned and shaped to correspond to the four first apertures 122, so that the four protrusions 132 can be protruded from the first apertures 122 after the assembly of the mezzanine 120 to the base plate 130. Preferably, the four first holes 122 are arranged in a circular symmetrical manner, that is, the four first holes 122 are arranged in a central symmetrical manner, that is, the four first holes 122 form a square region, each hole is distributed in a quarter of the region, and the transversely and longitudinally adjacent first holes 122 are distributed symmetrically. Four protrusions 132 are arranged in the same circular symmetrical manner on the base plate 130. A first transverse thin arm 124 and a first longitudinal thin arm 126 are respectively formed between two first hole bodies 122 adjacent to each other in the transverse direction and the longitudinal direction of the interlayer 120. A second transverse thin arm 134a and a second longitudinal thin arm 134b are respectively formed between two adjacent projections 132 in the transverse direction and the longitudinal direction of the bottom plate 130.
In some embodiments, the depth of the first groove 134 gradually increases from the edge of the bottom plate 130 to the center of the bottom plate 130, and the elastic body 150 matches the shape of the first groove 134. Preferably, the depth of the first groove 134 is slightly less than that of the elastic body 150 which is not elastically deformed, so that the elastic body 150 can tightly abut against the first groove 134. Thus, when pressure is applied to the sensor module 100, the force applied to the entire elastic body 150 is more uniform, and the first groove 134 has the same depth, and the structure of the first groove 134 and the protrusion 132 of the present embodiment makes the pressure sensing unit 110 more sensitive and accurate. In some embodiments, the first recess 134 is generally arcuate in shape. That is, the first groove 134 is formed to be deep in the middle and gradually shallow at both sides.
In a specific embodiment, four first holes 122 are disposed on the interlayer 120, and a first transverse thin arm 124 and a first longitudinal thin arm 126 are respectively formed between two first holes 122 adjacent in the transverse direction and the longitudinal direction. The bottom plate 130 is provided with four protrusions 132 corresponding to the first hole 122, and a second transverse thin arm 134a and a second longitudinal thin arm 134b are respectively formed between two adjacent protrusions 132 in the transverse direction and the longitudinal direction. The first groove 134 is formed on the second transverse thin arm 134a and the second longitudinal thin arm 134b, the first groove 134 is a cross-shaped first groove 134, and the transverse direction and the longitudinal direction of the cross-shaped first groove 134 extend along the second transverse thin arm 134a and the second longitudinal thin arm 134b respectively. Preferably, the cross-shaped first recess 134 is arched as a whole, i.e., the depth of the cross-shaped first recess 134 is greatest at the intersection point between the transverse direction and the longitudinal direction, and the depth of the intersection point gradually decreases toward the edge. Similarly, referring to fig. 7, the elastic body 150 is a cross-shaped elastic body 150, and has the same structure as the first groove 134, which is not repeated.
In one embodiment, two pressure sensing units 110 are respectively disposed on the first surface and the second surface of the interlayer 120, and the two pressure sensing units 110 are symmetrically disposed at two ends of the first longitudinal thin arm 126. Preferably, a total of four of the pressure sensing units 110 of the first surface and the second surface are connected as a wheatstone bridge. The Wheatstone bridge has a temperature compensation effect, so that the later circuit compensation is omitted, and the circuit is greatly simplified.
Referring to fig. 8, the second recess 142 of the top plate 140 may be an integral recess for receiving the protrusion 132 of the bottom plate 130. When the protrusion 132 is plural, the recess may be divided into the same number of sub-recesses, each of which accommodates one protrusion 132. The arrangement of the sub-grooves is identical to that of the protrusions 132. The depth of the second groove 142 is equal to the height of the protrusion 132 or the depth of the second groove 142 is slightly smaller than the height of the protrusion 132, so that the depth of the second groove 142 is in interference fit with the protrusion 132, i.e. the protrusion 132 is tightly buckled into the second groove 142. The central hole 144 is opened on the bottom surface of the second groove 142.
The press block 160 is shaped to match the central aperture 144 of the top plate 140. In some embodiments, the compact 160 is in the shape of a segment of a sphere, such as a hemisphere. The segment shape has a small stressed area and a large pressure, and the sensor module 100 is large and sensitive in deformation.
In some embodiments, the material of the interlayer 120 is at least one of polyimide and polyester.
In some embodiments, the material of the bottom plate 130 is at least one of polyimide and polyester.
In some embodiments, the material of the top plate 140 is at least one of polyimide and polyester.
In some embodiments, the material of the compact 160 is at least one of polyimide and polyester.
In some embodiments, the material of the elastomer 150 is selected from rubber, preferably silicone rubber.
The components of the sensor module 100 are fixedly connected, for example, by bonding with glue, adhesive, or the like, or by interference fit with the bosses of the mutual support.
In some embodiments, there are a plurality of sensor modules 100, and the plurality of sensor modules 100 are arranged in an array and electrically connected to the signal processing module 200 respectively. The plurality of sensor modules 100 are arranged in an array in the same interlayer 120, and the plurality of sensor modules 100 arranged in the array form an integrated sensor module 100 system. The plurality of sensor modules 100 transmit the monitoring signals to the signal processing module 200, and after the monitoring data of the sensor modules 100 is compared with the big data, the judgment of the corresponding sleep monitoring result, the suggested measures and the like can be obtained. Preferably, the plurality of sensor modules 100 are jointly secured to a support structure to form an integrated sensor system for ease of assembly, movement, etc. during use.
When the system works, the graphene metal film sensor for sleep monitoring is fixedly embedded in the mattress and is close to one side of the surface of the mattress contacted by a human body, and the sensor mounting plane is unified with the plane of the mattress. The installation position is close to the position of the shoulders when the human body lies. The sensor module 100 system is capable of completely covering a human shoulder footprint. The following is the actual operation of sleep detection using the sensor shown in fig. 4.
(1) Heartbeat monitoring:
when a human body is in heartbeat, a periodic heartbeat behavior can generate a periodic impact on the pressing block 160 in the sensor module 100 system, at this time, the pressing block 160 drives the 4 pressure sensing units 110 on the surface of the interlayer 120 to extrude the elastic body 150, because the elastic body 150 has certain elasticity, the pressure sensing units 110 can periodically generate deformation and recover an initial state, so that the 4 thin film resistance grids in the pressure sensing units 110 can also periodically generate deformation, a wheatstone bridge circuit formed by the 4 thin film resistance grids converts the strain signal into a voltage signal, the voltage signal is processed by the signal processing module 200 circuit, the amplitude and the period of the voltage signal corresponding to heartbeat monitoring are finally obtained, and the heartbeat rate is obtained by judging the period of the voltage signal.
(2) Monitoring respiration:
when a human body breathes, the principle is consistent with the heartbeat monitoring principle, but the amplitude of the voltage signal is larger than that of the voltage signal obtained when the heartbeat is monitored, the heartbeat voltage signal is filtered by the output signal through the filter, an independent breathing signal is output, and the breathing frequency is obtained according to the breathing signal obtained through analysis, so that the breathing monitoring is realized.
(3) Monitoring of sleeping posture and sleeping movement direction:
when the sleeping posture of the human body changes, the number of the pressure sensing units 110 in contact and pressed in the range of the shoulders and the position of the pressure sensing unit 110 change, at the same time, the deformation of the thin film resistor grid in the pressure sensing unit 110 also changes, and at the same time, the state of each sensor in the system can be judged by comparing the output signals in the sensor system. When the sleeping posture is changed, the extrusion force of the shoulders of the human body on the pressure sensing unit 110 is larger, and compared with the output signals for monitoring heartbeat and respiration, the corresponding output signals of the sensor module 100 are the largest, so that after the voltage signals obtained by the sensor module 100 are processed by the signal processing module 200, the interference of heartbeat and respiration signals can be filtered, finally the voltage output signals caused by the change of the sleeping posture and the sleeping movement are obtained, the sleeping posture of the human body is judged according to the output signals of the pressure arranged at different positions around the shoulders, and the direction of the sleeping movement of the human body is judged according to the change trend of the output signals.
The graphene metal film sensor for sleep monitoring can simultaneously realize the detection of heartbeat, respiration and sleeping posture.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A graphene metal thin film sensor for sleep monitoring, comprising a sensor module, the sensor module comprising:
a pressure sensing unit, the pressure sensing unit comprising in sequence: the protective layer covers the part of the patterned sensitive layer which is not shielded by the electrode;
the interlayer comprises a body and a first hole body, wherein the body comprises a first surface and a second surface which are opposite, the first hole body penetrates through the first surface and the second surface, and pressure sensing units are fixedly arranged on the opposite positions of the first surface and the second surface of the body respectively;
the bottom plate is arranged on one side of the first surface of the interlayer, a bulge and a first groove are arranged on the same surface of the bottom plate, the bulge is arranged outside the first groove, and the position and the size of the bulge are matched with those of the first hole body;
the top plate is arranged on one side of the second surface of the interlayer, is provided with a central hole and is provided with a second groove, and the second groove is used for accommodating the protrusion;
the elastic body is provided with a third surface and a fourth surface which are opposite, the third surface is fixed on the first surface, one end of the elastic body close to the fourth surface is inserted into the first groove of the bottom plate, and the shape and the size of the first groove are the same as those of the elastic body which is not subjected to elastic deformation;
a press block fixedly disposed on the second surface of the interlayer and protruding through the central hole of the top plate.
2. The graphene metal thin film sensor for sleep monitoring according to claim 1, wherein an even number of the pressure sensing units are respectively disposed on the first surface and the second surface, and the even number of the pressure sensing units are symmetrically arranged.
3. The graphene metal thin film sensor for sleep monitoring according to claim 1, wherein a depth of the first groove gradually increases from an edge of the bottom plate to a center of the bottom plate; the first groove is integrally arched.
4. The graphene-metal thin film sensor for sleep monitoring according to claim 1, wherein the compact is in a segment shape.
5. The graphene metal thin film sensor for sleep monitoring as claimed in any one of claims 1 to 4, wherein four first holes are arranged on the interlayer in a centrosymmetric manner, four protrusions corresponding to the first holes are arranged on the bottom plate, a first transverse thin arm and a first longitudinal thin arm are respectively formed between two first holes adjacent in a transverse direction and a longitudinal direction, and a second transverse thin arm and a second longitudinal thin arm are respectively formed between two protrusions adjacent in the transverse direction and the longitudinal direction.
6. The graphene metal thin film sensor for sleep monitoring as claimed in claim 5, wherein the first groove is provided on the second transverse thin arm and the second longitudinal thin arm, the first groove is a cross-shaped first groove, and the elastic body is a cross-shaped elastic body;
and/or the first surface and the second surface of the interlayer are respectively provided with two pressure sensing units, and the two pressure sensing units are symmetrically arranged at two ends of the first longitudinal thin arm; the four pressure sensing units on the first surface and the second surface are connected into a Wheatstone bridge.
7. The graphene-metal thin film sensor for sleep monitoring as claimed in any one of claims 1 to 4, wherein the interlayer is made of one of polyimide and polyester; and/or the bottom plate is made of one of polyimide and polyester; and/or the material of the top plate is selected from one of polyimide and polyester; and/or the material of the briquetting is selected from one of polyimide and polyester; and/or the material of the elastomer is selected from rubber.
8. The graphene metal thin film sensor for sleep monitoring as claimed in any one of claims 1 to 4, further comprising a signal processing module, wherein the signal processing module is electrically connected to the pressure sensing unit, and the signal processing module is configured to convert a pressure signal of the pressure sensing unit into an electrical signal.
9. The graphene metal thin film sensor for sleep monitoring as claimed in claim 8, wherein the number of the sensor modules is plural, and the plural sensor modules are arranged in an array and electrically connected to the signal processing module, respectively.
10. A mattress, a mattress, or a bed plate comprising the graphene metal thin film sensor for sleep monitoring according to any one of claims 1 to 9.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20230167207A (en) * | 2022-05-30 | 2023-12-08 | (주)나우시스템즈 | Pressure detecting apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20230167207A (en) * | 2022-05-30 | 2023-12-08 | (주)나우시스템즈 | Pressure detecting apparatus |
| KR102666560B1 (en) * | 2022-05-30 | 2024-05-20 | (주)나우시스템즈 | Pressure detecting apparatus |
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