CN114777966B - Flexible perception sensor and intelligent pad - Google Patents
Flexible perception sensor and intelligent pad Download PDFInfo
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- CN114777966B CN114777966B CN202210694954.1A CN202210694954A CN114777966B CN 114777966 B CN114777966 B CN 114777966B CN 202210694954 A CN202210694954 A CN 202210694954A CN 114777966 B CN114777966 B CN 114777966B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/14—Measuring force or stress, in general by measuring variations in capacitance or inductance of electrical elements, e.g. by measuring variations of frequency of electrical oscillators
- G01L1/142—Measuring force or stress, in general by measuring variations in capacitance or inductance of electrical elements, e.g. by measuring variations of frequency of electrical oscillators using capacitors
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Abstract
The invention discloses a flexible sensing sensor and an intelligent pad. The flexible perception sensor includes: the electrode plate comprises a first electrode plate, a second electrode plate and an elastic medium; the first electrode plate comprises a plurality of sub-electrode plates; the sub-electrode plates are mutually insulated; each sub-electrode plate comprises a loose area and at least one dense area which are distributed along a first direction; between the same sub-electrode plates, the dense area is positioned at one side of the loose area close to other sub-electrode plates adjacent to the sub-electrode plate; each sub-electrode plate further comprises a plurality of first conductive strips which are sequentially arranged along the first direction and are mutually and electrically connected; the spacing L1 between the first conductive strips in the open areas is greater than the spacing L2 between the first conductive strips in the dense areas. By adopting the technical scheme, the pressure detection and the quick positioning can be realized, the structure is simple, the detection cost is low, the work is reliable, and the dynamic property is good; false triggering is avoided, and positioning accuracy is improved; can be designed into various shapes, has low manufacturing cost and is beneficial to wide popularization and application.
Description
Technical Field
The invention relates to the technical field of sensors, in particular to a flexible sensing sensor and an intelligent pad.
Background
With the development of technology, a lot of intelligent furniture with detection functions, such as intelligent massage chairs, intelligent mattresses, intelligent sofas, automobile seat cushions and the like, appear on the market, the intelligent furniture can detect whether a user is using the furniture and can position the user, and the detection functions are generally completed by using a perception sensor.
Currently, sensing sensors used for positioning detection include a film type piezoresistive pressure sensor, a vibration sensor, an optical fiber pressure sensor, a pressure switch sensor, an air pressure sensor and the like, and the pressure generated by the vibration of heartbeat and respiratory vibration and the self weight of a user sitting on intelligent furniture is utilized to position so as to determine whether the user sits on the intelligent furniture. However, these sensors have certain limitations, such as high weaving cost, small detection range, complex wiring, complex software algorithm, poor comfort, poor air permeability, susceptibility to environmental interference, poor reliability, strong foreign body sensation, and the like, and have not been widely used.
Therefore, how to solve the problems of high weaving cost, small detection range, complex wiring, complex software algorithm, poor comfort, poor air permeability, easy environmental interference, poor reliability, strong foreign body sensation and the like of the perception sensor in the existing intelligent furniture becomes a problem to be solved urgently.
Disclosure of Invention
The invention provides a flexible sensing sensor and an intelligent pad, which are used for solving the limitation of the sensing sensor in the existing intelligent furniture.
According to an aspect of the present invention, there is provided a flexible sensing sensor electrically connected to a control circuit, comprising: the electrode plate comprises a first electrode plate, a second electrode plate and an elastic medium; the first electrode plate and the second electrode plate are arranged on two opposite sides of the elastic medium; the first electrode plate, the second electrode plate and the elastic medium form a variable capacitor;
the first electrode plate comprises a plurality of sub-electrode plates; the sub-electrode plates are mutually insulated;
each sub-electrode plate comprises a loose area and at least one dense area which are distributed along a first direction; between the same sub-electrode plates, the dense area is positioned at one side of the loose area close to other sub-electrode plates adjacent to the sub-electrode plate; each sub-electrode plate further comprises a plurality of first conductive strips which are sequentially arranged along the first direction and are mutually and electrically connected; the distance between the first conductive strips in the loose area is L1, and the distance between the first conductive strips in the dense area is L2; wherein L1 is more than L2.
Optionally, the second electrode plate includes a whole piece of conductive cloth.
Optionally, one side surface of the elastic medium close to the first electrode plate or the second electrode plate comprises a groove; the control circuit is arranged in the groove.
Optionally, each sub-electrode plate further includes a first electrode buckle; the second electrode plate comprises a second electrode buckle;
each sub-electrode plate is electrically connected with the first end of the control circuit through the first electrode buckle; the second electrode plate is electrically connected with the second end of the control circuit through the second electrode buckle.
Optionally, a first electrode buckle connector is arranged on the surface of one side, away from the ion electrode plate, of the first electrode buckle, and the first electrode buckle is electrically connected with the first end of the control circuit through the first electrode buckle connector;
and a second electrode buckle connector is arranged on the surface of one side of the second electrode buckle, which is far away from the second electrode plate, and the second electrode buckle is electrically connected with the second end of the control circuit through the second electrode buckle connector.
Optionally, a first electrode buckle pressing plate is arranged on one side, away from the first electrode buckle, of the first electrode buckle joint, and the first electrode buckle pressing plate is used for fixing the first electrode buckle joint;
and a second electrode buckle pressing plate is arranged on one side of the second electrode buckle joint, which deviates from the second electrode buckle, and the second electrode buckle pressing plate is used for fixing the second electrode buckle joint.
Optionally, the value range of the width w of the first conductive strap is as follows: w is more than or equal to 10mm and less than or equal to 15 mm.
Optionally, a value range of a distance L1 between the first conductive strips in the loose region is: l1 is more than or equal to 20mm and less than or equal to 40 mm; the value range of the spacing L2 between the first conductive strips in the dense area is: w is less than or equal to L2 and less than or equal to 15 mm;
the value range of the distance d between the sub-electrode plates is as follows: d is more than or equal to 20mm and less than or equal to 40 mm.
Optionally, the elastic medium is provided with a first air hole; the first air hole and the first conductive belt are not overlapped in the thickness direction of the flexible perception sensor;
the second electrode plate is provided with a second air hole; in the thickness direction of the flexible perception sensor, the first air hole and the second air hole are correspondingly arranged.
According to another aspect of the present invention, there is provided a smart mat comprising the flexible sensor of any of the embodiments of the present invention; the flexible sensing sensor is electrically connected with the control circuit; the control circuit is used for determining the information of the pressed position of the intelligent mat according to the flexible sensing sensor.
According to the flexible sensing sensor provided by the embodiment of the invention, the variable capacitor is formed by the first electrode plate, the second electrode plate and the elastic medium, and the first electrode plate is arranged into the plurality of sub-electrode plates which are insulated from each other, so that the flexible sensing sensor comprises the plurality of variable capacitors, pressure detection and quick positioning can be realized, the structure is simple, the detection cost is low, the operation is reliable, and the dynamic property is good; the sensitivity of the flexible sensing sensor can be properly reduced by arranging the loose area and the dense area on each sub-electrode plate, false triggering is avoided, missing detection caused by pressure at the edges of the sub-electrode plates can be avoided, and the positioning precision is improved; the first conductive belt can improve the flexibility and the tensile resistance of the flexible perception sensor, can be designed into various shapes, is low in manufacturing cost, is comfortable and free of foreign body sensation when being applied to intelligent furniture such as mattresses, sofas, automobile seat cushions and the like, and is beneficial to wide popularization and application.
It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present invention, nor do they necessarily limit the scope of the invention. Other features of the present invention will become apparent from the following description.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic cross-sectional structural diagram of a flexible sensor according to an embodiment of the present invention;
fig. 2 is a schematic top view of a first electrode plate according to an embodiment of the present invention;
FIG. 3 is an exploded view of a flexible sensor according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a flexible sensor according to an embodiment of the present invention;
FIG. 5 is a schematic view of a portion of a flexible sensor according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an intelligent mat according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Existing sensing sensors have their respective limitations, such as: the vibration sensor is limited in installation position, complex in structural design and processing technology, high in cost and slow in detection speed, the vibration sensor judges whether a user is in a bed or out of the bed by acquiring heart rate vibration and respiratory vibration through the sensor, the heart rate or respiratory data of a plurality of time periods are often needed for outputting a detection result, and then the heart rate vibration or the respiratory vibration is measured through an algorithm to judge whether the user is on the furniture, so that the reaction speed is slow, the algorithm is complex, the furniture is easy to be interfered by the external environment, and if the user is a double bed, the user cannot accurately judge the condition of mutual interference of two persons; if the pressure switch sensor is selected for detection, the method belongs to point detection, and a plurality of pressure sensors are required to be installed in the intelligent furniture, so that the related sensors are large in number, complex in wiring, high in cost, easy to crush and high in manufacturing difficulty; if the film type piezoresistive pressure sensor is selected, the cost is higher, and the film is easy to break when the film is stressed too much; if the optical fiber sensor is selected to be woven into the intelligent furniture, special optical fibers are needed, the detection cost is high, the bending angle of the optical fibers cannot be too large after stress is applied, the detection and application range is limited, and the later maintenance cost is high; if the air pressure sensor is selected, a plurality of air bags are required, the detection cost is high, the circuit is complex, and the detection of the air pressure sensor is easily influenced by the ambient air pressure and the ambient temperature.
In order to solve the above technical problems, an embodiment of the present invention provides a flexible sensor, and fig. 1 is a schematic cross-sectional structure diagram of the flexible sensor according to the embodiment of the present invention. Referring to fig. 1, the flexible sensing sensor 10 includes a first electrode plate 100, a second electrode plate 200, and an elastic medium 300, the first electrode plate 100 and the second electrode plate 200 being disposed at opposite sides of the elastic medium 300; the first electrode plate 100, the second electrode plate 200, and the elastic medium 300 constitute a variable capacitor. Specifically, the elastic medium 300 is deformed when being subjected to a pressure, so as to change the distance between the first electrode plate 100 and the second electrode plate 200, and the first electrode plate 100, the second electrode plate 200 and the elastic medium 300 form a variable capacitor which changes with the pressure.
Fig. 2 is a schematic top view of a first electrode plate according to an embodiment of the present invention. Referring to fig. 2, the first electrode plate 100 includes a plurality of sub-electrode plates 110, and the sub-electrode plates 110 are insulated from each other, for example, a distance d between the sub-electrode plates 110 has a value range: d is more than or equal to 20mm and less than or equal to 40 mm. Each sub-electrode plate 110 includes one loose area 120 and at least one dense area 130 distributed along the first direction, and between the same sub-electrode plates 110, the dense area 130 is located at a side of the loose area 120 close to other sub-electrode plates 110 adjacent to the sub-electrode plate 110. Each sub-electrode plate 110 further includes a plurality of first conductive strips 101 sequentially arranged along the first direction and electrically connected to each other, the interval between the first conductive strips 101 located in the open area 120 is L1, and the interval between the first conductive strips 101 located in the dense area 130 is L2, wherein L1 > L2.
It can be understood that each sub-electrode plate 110 and the second electrode plate 200 can form a variable capacitor, and the variable capacitors do not interfere with each other. The distance between the sub-electrode plate 110 and the second electrode plate under pressure changes, and the sub-electrode plate 110, the second electrode plate 200 and the elastic medium 300 form a variable capacitance which changes with pressure. The flexible sensing sensor 10 includes a plurality of variable capacitors, and the sub-electrode plate 110 subjected to pressure can be positioned according to the capacitance change of the variable capacitors.
The first electrode plate 100 and the second electrode plate 200 can be made of conductive cloth, the conductive cloth is made of fiber cloth (generally commonly used polyester fiber cloth) as a base material, and is subjected to pre-treatment and then is plated with metal plating to enable the conductive cloth to have metal characteristics, so that the conductive cloth is conductive fiber cloth, and the conductive cloth is widely used for high-radiation work clothes such as electronic and electromagnetic. The first conductive band 101 can be made by cutting or die cutting the whole conductive cloth, for example, the width w of the first conductive band 101 can be 10mm or more and w or less and 15mm or less, and the manufacturing process is simple. In order to prevent the first electrode plate 100 and the second electrode plate 200 at both sides of the elastic medium 300 from being displaced when the flexible sensing sensor 10 is under pressure, the first electrode plate 100 and the second electrode plate 200 can be fixed at opposite sides of the elastic medium 300 by tape type connection and/or sewing type connection, and are conveniently designed to be hidden in intelligent furniture in various shapes.
Illustratively, when the flexible sensor 10 is under pressure, the elastic medium 300 is deformed by the pressure, which drives the distance between the at least one sub-electrode plate 110 and the second electrode plate 200 to change, so as to change the capacitance of the at least one variable capacitor. The flexible sensing sensor 10 is electrically connected to a control circuit (not shown in the figure), the flexible sensing sensor 10 converts the pressure variation into a capacitance variation of a variable capacitance or a plurality of variable capacitances, and outputs the capacitance variation to the control circuit, the sub-electrode plate 110 corresponding to the output capacitance variation and the capacitance variation of each variable capacitance can be detected by the control circuit, and then the area under the action of pressure and the pressure are determined, and then whether a user uses the intelligent furniture applying the flexible sensing sensor 10 and the use area of the user are determined.
In addition, the distance L1 between the first conductive strips 101 of the wide area 120 is set to be larger, for example, the value range of the distance L1 between the first conductive strips 101 of the wide area 120 is: l1 is more than or equal to 20mm and less than or equal to 40mm, false detection can be avoided, the sensitivity of the flexible perception sensor 10 is properly reduced, for example, when a pet is in a house, the pet has the possibility of stepping on intelligent furniture, the limbs of the pet are generally slender, screening detection can be carried out by setting the distance L1 between the first conductive belts 101 of the loose area 120 to be larger, only the pressure of a user is detected, and the pressure of the pet is filtered.
The spacing L2 between the first conductive strips 101 of the dense area 130 is set to be smaller, for example, the spacing L2 between the first conductive strips 101 of the dense area 130 has a value range of: w is less than or equal to L2 and less than or equal to 15mm, and the dense area 130 of the same sub-electrode plate 110 is closer to other sub-electrode plates 110 adjacent to the sub-electrode plate 110 than the loose area, which can avoid missing detection caused by pressure at the edge of the sub-electrode plate 110, and improve positioning accuracy, for example, when a user lies on the flexible perception sensor 10, and two thirds of the body is located at the edge of one sub-electrode plate 110, and the other third of the body is located at the edge of the adjacent sub-electrode plate 110, by arranging the dense area 130 at the sub-electrode plate 110 close to other sub-electrode plates 110 adjacent to the sub-electrode plate 110, and setting the distance L2 between the first conductive bands 101 of the dense area 130 to be smaller, the pressure effect on the plurality of sub-electrode plates 110 can be accurately detected, and missing detection caused by pressure at the edge of the sub-electrode plates 110 can be avoided. The first conductive bands 101 are arranged at intervals, so that the cost can be further reduced, the flexibility of each sub-electrode plate 110 can be improved, and the sub-electrode plates can be bent at larger angles at the intervals; when the flexible perception sensor 10 is under the action of large pressure, the elastic medium 300 deforms greatly, and the first conductive strips 101 arranged at intervals can reduce some pulling force and improve the tensile resistance of the flexible perception sensor 10.
Optionally, the resilient medium 300 comprises a sponge insulator. The sponge insulator has good elasticity and support performance, is very suitable for intelligent furniture, can increase the comfort level of the intelligent furniture, and can disperse pressure and prolong the service life of the flexible sensing sensor 10 when the flexible sensing sensor 10 is under the action of the pressure. In addition, the sponge insulator has good resilience, when the pressure applied on the flexible sensing sensor 10 disappears, the distance between the first electrode plate 100 and the second electrode plate 200 can be restored to the distance state when the flexible sensing sensor 10 is not stressed by means of the resilience of the sponge insulator, and the capacitance of the variable capacitor can also be restored to the state when the flexible sensing sensor 10 is not stressed. And the sponge insulator has low cost, so that the cost of the flexible sensing sensor 10 is further reduced.
According to the embodiment of the invention, the variable capacitor is formed by the first electrode plate, the second electrode plate and the elastic medium, and the first electrode plate is arranged into the plurality of sub-electrode plates which are insulated from each other, so that the flexible sensing sensor comprises the plurality of variable capacitors, pressure detection and quick positioning can be realized, the structure is simple, the detection cost is low, the work is reliable, and the dynamic property is good; the sensitivity of the flexible sensing sensor can be properly reduced by arranging the loose area and the dense area on each sub-electrode plate, false triggering is avoided, missing detection caused by pressure at the edges of the sub-electrode plates can be avoided, and the positioning precision is improved; the first conductive belt can improve the flexibility and the tensile resistance of the flexible perception sensor, can be designed into various shapes, is low in manufacturing cost, is comfortable and free of foreign body sensation when being applied to intelligent furniture such as mattresses, sofas, automobile seat cushions and the like, and is beneficial to wide popularization and application.
Optionally, fig. 3 is an exploded schematic view of a flexible sensing sensor according to an embodiment of the present invention. Referring to fig. 3, the second electrode plate 200 includes a conductive cloth in a single piece.
For example, in the case of tape connection, each sub-electrode plate 110 may be a first conductive tape 101 with a back adhesive, such as a conductive cloth tape, and the second electrode plate 200 may be a radiation-proof conductive cloth with a back adhesive, and each sub-electrode plate 110 and the second electrode plate 200 are respectively adhered to two opposite sides of the elastic medium 300, so that the manufacturing is simple and the production cost is low. The conductive cloth tape of the sub-electrode plate 110 and the conductive cloth of the second electrode plate 200 may be made of the same material, and the whole conductive cloth is cut or die-cut. In addition, when an interference signal exists outside, the whole piece of conductive cloth can protect the output signal of the sub-electrode plate 110 from being interfered easily, and the reliability and accuracy of the flexible sensing sensor 10 are improved.
In the embodiment of the present invention, the second electrode plate 200 includes the whole piece of conductive cloth, so that the second electrode plate 200 can always face the first conductive band 101 of each sub-electrode plate 110, thereby preventing missing detection due to dislocation of the first conductive band 101 and the second electrode plate 200 when the elastic medium 300 is deformed, and improving accuracy of a detection result; in addition, the second electrode plate 200 can isolate interference signals, so as to prevent the output signals of the sub-electrode plates 110 from being interfered to influence the test result, thereby further improving the accuracy of the test result.
Optionally, with continued reference to fig. 3, a side surface of the elastic medium 300 adjacent to the first electrode plate 100 or the second electrode plate 200 includes a groove 310, and the control circuit 410 is disposed in the groove 310. Illustratively, the control circuit 410 may be housed within the control box 400 and the control box 400 may then be placed within the recess 310. Therefore, the surface of the flexible perception sensor 10 is flat, no foreign matter is raised, and the comfort level of the flexible perception sensor 10 is improved.
Alternatively, referring to fig. 1 to 3, each sub-electrode plate 110 further includes a first electrode buckle 111; the second electrode plate 200 includes a second electrode button 201; each sub-electrode plate 110 is electrically connected with a first end of the control circuit 410 through a first electrode buckle 111; the second electrode plate 200 is electrically connected to a second end of the control circuit 410 through the second electrode button 201.
The first electrode buckle 111 may be a positive electrode buckle and is electrically connected to the first end of the control circuit 410, and the second electrode buckle 201 may be a negative electrode buckle and is electrically connected to the second end of the control circuit 410; alternatively, the first electrode buckle 111 may be a negative electrode buckle and electrically connected to the first end of the control circuit 410, and the second electrode buckle 201 may be a positive electrode buckle and electrically connected to the second end of the control circuit 410, which is not specifically limited in this embodiment of the present invention.
For example, the flexible sensor 10 is electrically connected to the control circuit 410 through the first electrode buckle 111 and the second electrode buckle 201, and if the first electrode buckle 111 and the second electrode buckle 201 are both male buckles, the first electrode buckle 111 and the second electrode buckle 201 may be electrically connected to the control circuit 410 through female buckles. The flexible sensing sensor 10 and the control circuit 410 can be conveniently replaced through the first electrode buckle 111 and the second electrode buckle 201, so that the flexible sensing sensor 10 can be applied to more use scenes.
It is understood that the first electrode tab 111 may be located at any position of the sub-electrode plate 110, and the number of the first electrode tabs 111 on each sub-electrode plate 110 is not limited in any way. The second electrode buckle 201 can be located at any position of the second electrode plate 200, and the number of the second electrode buckles 201 on the second electrode plate 200 is not limited in particular.
Optionally, fig. 4 is a schematic structural diagram of a flexible sensing sensor according to an embodiment of the present invention, and fig. 5 is a partial schematic diagram of the flexible sensing sensor according to the embodiment of the present invention. Referring to fig. 3-5, a first electrode buckle connector 112 is disposed on a surface of the first electrode buckle 111 facing away from the sub-electrode plate 110, and the first electrode buckle 111 is electrically connected to a first end of the control circuit 410 through the first electrode buckle connector 112; a second electrode buckle connector 202 is arranged on the surface of the second electrode buckle 201, which is away from the second electrode plate 200, and the second electrode buckle 201 is electrically connected with a second end of the control circuit 410 through the second electrode buckle connector 202.
For example, if the first electrode buckle 111 is a male buckle, the first electrode buckle connector 112 is a female buckle; if the second electrode buckle 201 is a male buckle, the second electrode buckle connector 202 is a female buckle. The first electrode tab 112 may be electrically connected to a first terminal of the control circuit 410 through a first connection line 113, and the second electrode tab 202 may be electrically connected to a second terminal of the control circuit 410 through a second connection line 203.
Optionally, with continued reference to fig. 3 to fig. 5, a first electrode buckle pressing plate 114 is disposed on a side of the first electrode buckle connector 112 away from the first electrode buckle 111, and the first electrode buckle pressing plate 114 is used for fixing the first electrode buckle connector 112; a second electrode buckle pressing plate (not shown in the figure) is disposed on a side of the second electrode buckle connector 202 away from the second electrode buckle 201, and the second electrode buckle pressing plate is used for fixing the second electrode buckle connector 202.
For example, the first electrode crimping plate 114 may be fixed to the sub-electrode plate 110 by a first nylon rivet 115, and the second electrode crimping plate may be fixed to the second electrode plate 200 by a second nylon rivet (not shown). Thus, the first electrode tab 112 can be tightly combined with the first electrode tab 111, and the second electrode tab 202 can be tightly combined with the second electrode tab 201.
Alternatively, referring to fig. 3 and 4, the elastic medium 300 is provided with a first airing hole 320; in the thickness direction of the flexible sensing sensor 10, the first vent 320 and the first conductive strip 101 are not overlapped with each other; the second electrode plate 200 is provided with a second vent hole 220; the first air hole 320 and the second air hole 220 are disposed corresponding to each other in the thickness direction of the flexible sensor 10. The first and second vents 320 and 220 may facilitate ventilation, thereby improving comfort of a user.
Fig. 6 is a schematic structural diagram of an intelligent mat according to an embodiment of the present invention, and as shown in fig. 6, an intelligent mat 20 includes a flexible sensing sensor 10 according to an embodiment of the present invention. The smart mat 20 may be, for example, a mattress, a seat cushion, etc., and may be applied to a smart bed, a car seat, etc. For example, the intelligent bed can be used for monitoring the time of a user in the bed and out of the bed; the automatic seat number recognition device is used for the automobile seat cushion and can realize automatic seat number recognition. The flexible sensing sensor 10 includes a plurality of variable capacitances, and the flexible sensing sensor 10 is electrically connected to a control circuit. Wherein, the control circuit can be used for determining the information of the pressed position of the intelligent mat 20 according to the capacitance information of each flexible perception sensor 10.
Illustratively, the flexible sensing sensors 10 are packaged by cloth bags to form the intelligent cushion 20, the intelligent cushion 20 can be applied to intelligent furniture such as an intelligent sofa and a double bed, the length and width difference is large, through capacitance information of the flexible sensing sensors 10, the positions of the intelligent furniture can be determined, and then the intelligent furniture is automatically heated when the room temperature is low.
The intelligent cushion provided by the embodiment of the invention can comprise the flexible perception sensor provided by any embodiment of the invention, and has corresponding structure and beneficial effect.
It will be appreciated that various forms of the structures shown above may be used, with structures being recombined, added or deleted. For example, the structures described in the present invention may be present simultaneously or partially present simultaneously, and the present invention is not limited thereto as long as the desired result of the technical solution of the present invention can be achieved.
The above-described embodiments should not be construed as limiting the scope of the invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A flexible sensor electrically connected to a control circuit, comprising: the electrode plate comprises a first electrode plate, a second electrode plate and an elastic medium; the first electrode plate and the second electrode plate are arranged on two opposite sides of the elastic medium; the first electrode plate, the second electrode plate and the elastic medium form a variable capacitor;
the first electrode plate comprises a plurality of sub-electrode plates; the sub-electrode plates are mutually insulated;
each sub-electrode plate comprises a loose area and at least one dense area which are distributed along a first direction; between the same sub-electrode plates, the dense area is positioned at one side of the loose area close to other sub-electrode plates adjacent to the sub-electrode plate; each sub-electrode plate further comprises a plurality of first conductive strips which are sequentially arranged along the first direction and are mutually and electrically connected; the distance between the first conductive strips in the loose area is L1, and the distance between the first conductive strips in the dense area is L2; wherein L1 is more than L2.
2. The flexible sensor of claim 1, wherein the second electrode plate comprises a unitary piece of conductive cloth.
3. The flexible sensor according to claim 1, wherein a side surface of the elastic medium adjacent to the first electrode plate or the second electrode plate comprises a groove; the control circuit is arranged in the groove.
4. The flexible sensor of claim 1, wherein each of said sub-electrode plates further comprises a first electrode button; the second electrode plate comprises a second electrode buckle;
each sub-electrode plate is electrically connected with the first end of the control circuit through the first electrode buckle; the second electrode plate is electrically connected with the second end of the control circuit through the second electrode buckle.
5. The flexible sensor according to claim 4, wherein a first electrode buckle connector is disposed on a surface of the first electrode buckle opposite to the ion electrode plate, and the first electrode buckle is electrically connected to the first end of the control circuit through the first electrode buckle connector;
and a second electrode buckle connector is arranged on the surface of one side of the second electrode buckle, which is far away from the second electrode plate, and the second electrode buckle is electrically connected with the second end of the control circuit through the second electrode buckle connector.
6. The flexible sensor according to claim 5, wherein a first electrode buckle plate is disposed on a side of the first electrode buckle facing away from the first electrode buckle, and the first electrode buckle plate is used for fixing the first electrode buckle;
and a second electrode buckle pressing plate is arranged on one side of the second electrode buckle joint, which deviates from the second electrode buckle, and the second electrode buckle pressing plate is used for fixing the second electrode buckle joint.
7. The flexible sensor of claim 1, wherein the width w of the first conductive strip ranges from: w is more than or equal to 10mm and less than or equal to 15 mm.
8. The flexible sensor of claim 7, wherein the distance L1 between the first conductive strips in the open area has a value in the range of: l1 is more than or equal to 20mm and less than or equal to 40 mm; the value range of the spacing L2 between the first conductive strips in the dense area is: w is less than or equal to L2 and less than or equal to 15 mm;
the value range of the distance d between the sub-electrode plates is as follows: d is more than or equal to 20mm and less than or equal to 40 mm.
9. The flexible sensing sensor according to claim 1, wherein the elastic medium is provided with a first vent; in the thickness direction of the flexible perception sensor, the first air hole and the first conductive belt are not overlapped with each other;
the second electrode plate is provided with a second air hole; in the thickness direction of the flexible perception sensor, the first air hole and the second air hole are correspondingly arranged.
10. A smart mat, comprising: at least one flexible perception sensor according to any one of claims 1-9; the flexible sensing sensor is electrically connected with the control circuit; the control circuit is used for determining the information of the pressed position of the intelligent mat according to the flexible perception sensor.
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