WO2018133287A1 - 压力传感器和可穿戴设备 - Google Patents

压力传感器和可穿戴设备 Download PDF

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Publication number
WO2018133287A1
WO2018133287A1 PCT/CN2017/087276 CN2017087276W WO2018133287A1 WO 2018133287 A1 WO2018133287 A1 WO 2018133287A1 CN 2017087276 W CN2017087276 W CN 2017087276W WO 2018133287 A1 WO2018133287 A1 WO 2018133287A1
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WO
WIPO (PCT)
Prior art keywords
electrode
region
pressure sensor
pressure
elastic structure
Prior art date
Application number
PCT/CN2017/087276
Other languages
English (en)
French (fr)
Inventor
李珂
王杨勇
王飞
张仲仲
叶瀚泽
Original Assignee
珠海安润普科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 珠海安润普科技有限公司 filed Critical 珠海安润普科技有限公司
Priority to US15/563,564 priority Critical patent/US10712213B2/en
Publication of WO2018133287A1 publication Critical patent/WO2018133287A1/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/78—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by the contacts or the contact sites
    • H01H13/803—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by the contacts or the contact sites characterised by the switching function thereof, e.g. normally closed contacts or consecutive operation of contacts
    • 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
    • G01L1/146—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 for measuring force distributions, e.g. using force arrays
    • 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
    • G01L1/18—Measuring force or stress, in general using properties of piezo-resistive materials, i.e. materials of which the ohmic resistance varies according to changes in magnitude or direction of force applied to the material
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04102—Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2203/00—Form of contacts
    • H01H2203/008—Wires
    • H01H2203/0085—Layered switches integrated into garment, clothes or textile
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2203/00—Form of contacts
    • H01H2203/036—Form of contacts to solve particular problems
    • H01H2203/044—Form of contacts to solve particular problems to achieve a predetermined sequence of switching
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2225/00—Switch site location
    • H01H2225/018—Consecutive operations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2239/00—Miscellaneous
    • H01H2239/078—Variable resistance by variable contact area or point

Definitions

  • the present application relates to the field of sensors, and in particular to a pressure sensor and a wearable device.
  • Pressure sensors for smart wearable electronic devices have been reported.
  • the main limitation is that the pressure switch has a single conduction pressure and cannot be applied to multiple application scenarios of conduction pressure thresholds; and the output signals of these pressure sensors are continuously analog signals, which need to be converted into digital signals for subsequent operation. Signal processing.
  • the main purpose of the present application is to provide a pressure sensor and a wearable device to solve the problem that the pressure sensor in the prior art cannot be applied to multiple conduction pressure threshold scenarios.
  • a pressure sensor including: a circuit board including an electrode region, the electrode region including a plurality of electrode pairs spaced apart; and a conductive elastic structure disposed on the above One side of the circuit board includes a first area, and the first area includes a conductive portion.
  • the conductive portion When no pressure is applied to the conductive elastic structure, the conductive portion is isolated from each of the pair of electrodes, so that each of the pair of electrodes is disconnected a state, when a pressure greater than a conduction pressure threshold is applied to the conductive elastic structure, the conductive elastic structure is deformed such that the conductive portion is in contact with at least one of the pair of electrodes, such that at least one of the pair of electrodes is turned on, and the different electrodes are The on-voltage thresholds for the pair are different.
  • the electrode region is located in a central region of the circuit board, and a projection of the electrode region on a first plane perpendicular to a thickness direction of the circuit board is located inside the projection of the conductive portion on the first plane or with the conductive portion The projections on the first plane described above coincide.
  • the electrode region includes a plurality of cathodes and a plurality of anodes, the cathodes are in one-to-one correspondence with the anodes, and one of the cathodes and the corresponding anode form one pair of the electrodes; or the electrode region includes a cathode and a plurality of anodes One of the cathodes and the plurality of anodes respectively form a plurality of the pair of electrodes; or the electrode region includes an anode and a plurality of cathodes, and one of the anodes forms a plurality of the pair of electrodes on the plurality of cathodes.
  • the electrode region includes N pairs of the electrodes, wherein a projection of the X-1th electrode pair in the electrode region is located inside a projection of the Xth electrode pair in the electrode region, and an X+1
  • the cathode of the pair of electrodes is located on a side of the cathode of the Xth electrode pair away from the cathode of the X-1th electrode pair, and the anode of the X+1th electrode pair is located at a The anode of the X electrode pairs is away from the anode side of the X-1th electrode pair.
  • each of the cathodes and each of the anodes includes an arc segment, a vertical segment, and an inclined segment connected between the arc segment and the vertical segment.
  • the electrode region includes a one-to-one corresponding cathode and the anode, and the inclined segments of each of the cathodes or the anodes are on the same straight line.
  • each of the cathodes and each of the anodes sequentially includes a first horizontal segment, a first vertical segment, a second horizontal segment, and a second vertical segment, wherein the first horizontal segment is parallel to the second horizontal segment, and the first The vertical segment is parallel to the second vertical segment, and the first vertical segment is connected between the first horizontal segment and the second horizontal segment, and the second horizontal segment is connected to the first vertical segment and the second vertical segment between.
  • each of the electrode pairs includes a one-to-one correspondence between the cathode and the anode, and the second horizontal segments of each of the cathodes or the anodes are on the same straight line.
  • the first region includes a plurality of first sub-regions
  • the electrode region includes a plurality of electrode sub-regions, wherein the first sub-region is disposed in one-to-one correspondence with the electrode sub-region, and when no pressure is applied to the conductive elastic structure The difference between the different first sub-regions and the electrode sub-regions at the corresponding positions is different.
  • the circuit board further includes a non-electrode region disposed around the electrode region
  • the conductive elastic structure further includes a second region disposed around the first region
  • the pressure sensor further includes: a connecting portion disposed in the non-electrode region Between the second region and the second region, the non-electrode region and the second region are fixedly connected.
  • the connecting portion is a pressure-sensitive adhesive tape.
  • the circuit board further includes a non-electrode region disposed around the electrode region
  • the pressure sensor further includes: an elastic fixing member disposed on the non-electrode region and surrounding the conductive elastic structure for fixing the conductive elastic structure and
  • the above-mentioned elastic fixing member is an elastic fixing ring.
  • a wearable device including a pressure sensor, which is any of the above-described pressure sensors.
  • the circuit board of the pressure sensor in the present application includes a plurality of electrode pairs, and different electrode pairs have different conduction pressure thresholds, that is, different pressures are applied to the conductive elastic structure (the pressure is greater than the conduction pressure) When the threshold is), different electrode pairs are turned on.
  • the circuit board includes three electrode pairs, respectively, a first electrode pair, a second electrode pair and a third electrode pair, the three electrode pairs correspond to the first conduction pressure threshold. a second conduction pressure threshold and a third conduction pressure threshold.
  • the pressure applied to the conductive elastic structure is less than the first conduction pressure threshold, the conductive elastic structure is deformed, but is insufficient for the conductive region to be in contact with any one of the electrode pairs.
  • the three electrode pairs are not turned on.
  • the conductive elastic structure is deformed such that the first electrode pair is in contact with the conductive region, thereby making the first An electrode pair is turned on, and when the pressure is gradually increased and is between the second conduction pressure threshold and the third conduction pressure threshold, the deformation of the conductive elastic structure is Increasing, the second electrode pair is in contact with the conductive region, so that the second electrode pair is also turned on, and when the pressure continues to increase and is greater than the third conduction pressure threshold, the deformation of the conductive elastic structure is further increased, so that the third The pair of electrodes are in contact with the electrically conductive region, such that the third electrode pair is also conducting.
  • the pressure applied to the conductive elastic structure is gradually increased, different electrode pairs are sequentially turned on, and thus can be applied to a plurality of scenes in which the pressure threshold is turned on.
  • FIG. 1 is a schematic structural view of a pressure sensor according to an embodiment of the present application
  • FIG. 2 is a schematic structural view of a pressure sensor provided by another embodiment of the present application in different working states;
  • FIG. 3 is a schematic structural view of a pressure sensor according to still another embodiment of the present application in different working states
  • FIG. 4 is a schematic structural view of a pressure sensor provided by another embodiment of the present application in different working states
  • Figures 5(a), 5(b), 5(c), 5(d), 5(e), 5(f) and 5(g) show seven implementations of the present application.
  • the example provides a schematic diagram of the structure of the circuit board;
  • 6(a), 6(b), 6(c), 6(d) and 6(e) are schematic views showing the structure of the conductive elastic structure provided by the five embodiments of the present application.
  • the pressure sensor of the prior art cannot be applied to a plurality of scenarios of the on-voltage threshold.
  • the present application proposes a pressure sensor and a wearable device.
  • a pressure sensor is provided.
  • the pressure sensor includes a circuit board 1 including an electrode region 11 and a conductive elastic structure 2, wherein the electrode region 11 includes a plurality of spaced-apart electrode pairs 10; the conductive elastic structure 2 is disposed on one side of the circuit board 1 and includes a first region 21, and the first region 21 includes a conductive portion, as shown in FIGS.
  • FIG. 2 to 4 a structural diagram of the pressure sensor in different states (a state in which no pressure is applied and a state in which a different pressure is applied), when no pressure is applied to the conductive elastic structure 2,
  • the conductive portion is in an isolated state from each of the electrode pairs 10 such that each of the electrode pairs 10 is in an open state, and when a pressure greater than a conduction pressure threshold is applied to the conductive elastic structure 2, the conductive elastic structure 2 is deformed, and the conductive The portion is in contact with at least one of the pair of electrodes 10 such that at least one of the pair of electrodes 10 is turned on, and different conduction thresholds of the pair of electrodes 10 are different.
  • the circuit board of the pressure sensor includes a plurality of electrode pairs, and different electrode pairs have different conduction pressure thresholds, that is, when different pressures are applied to the conductive elastic structure (the pressure is greater than the conduction pressure threshold), different electrode pairs are guided.
  • the circuit board includes three electrode pairs, respectively, a first electrode pair, a second electrode pair, and a third electrode pair
  • the three electrode pairs correspond to a first conduction pressure threshold, a second conduction pressure threshold, and a third
  • the three-conducting pressure threshold when no pressure is applied to the conductive elastic structure, the conductive elastic structure is not deformed, the conductive portion of the conductive elastic structure is in isolation from each electrode pair in the electrode region, and the pressure sensor is in an open state, and is electrically conductive.
  • the conductive elastic structure When the pressure applied by the elastic structure is less than the first conduction pressure threshold, the conductive elastic structure is deformed, but not enough to make the conductive region contact with any one of the electrode pairs, that is, the three electrode pairs are not conductive, when the applied pressure is greater than the first
  • the conduction pressure threshold is less than the second conduction pressure threshold
  • the conductive elastic structure is deformed such that the first electrode pair is in contact with the conductive region
  • the first electrode pair is turned on, and when the pressure is gradually increased and is between the second conduction pressure threshold and the third conduction pressure threshold, the deformation of the conductive elastic structure is gradually increased, so that the second electrode pair and the conductive Contacting the region, so that the second electrode pair is also turned on, and when the pressure continues to increase and is greater than the third conduction pressure threshold, the deformation of the conductive elastic structure is further increased, so that the third electrode pair is in contact with the conductive region, thereby making the first The three electrode pairs are also turned on.
  • the range of the on-pressure threshold of the pressure sensor and the step accuracy of the on-pressure threshold may pass through the pair of electrodes on the board.
  • the shape, size, height, density and distribution of the electrodes are adjusted.
  • the pressure measurement range, repeatability and hysteresis of the pressure sensor can be adjusted by changing the electrical properties, mechanical properties and geometry of the conductive elastic structure.
  • the signals output by the pressure sensor in the prior art are continuous analog signals, and the analog signals need to be converted into digital signals to facilitate subsequent data processing, and the signal output by the pressure sensor in the present application is a step type.
  • the signal can be easily digitized without subsequent analog-to-digital conversion, which simplifies the subsequent signal processing system.
  • the conductive elastic structure in the present application may include a conductive layer formed of a conductive material and an elastic body formed of an elastic material, wherein the conductive layer serves as a conductive portion, specifically, the conductive layer is laminated, coated, bonded, injection molded, or The molding process such as blending and the elastic material are combined to form a conductive elastic structure, and in addition, materials having different resistivities can be selected according to actual conditions.
  • the conductive elastic structure in the present application may further include a conductive portion of the composite material formed of the conductive material and the elastic material, and specifically, the elastic conductive structure may be formed by blending, laminating, coating, bonding or injection molding.
  • the elastic material in the conductive elastic structure in the present application may be one or more of a polyurethane resin, a polyurethane soft foam, a silicone rubber, a polyacrylic resin, an elastic block copolymer and an elastic metal, and the above elastic conductive structure has an excellent back.
  • a polyurethane resin a polyurethane soft foam
  • silicone rubber a silicone rubber
  • a polyacrylic resin an elastic block copolymer and an elastic metal
  • the above elastic conductive structure has an excellent back.
  • Flexible, Fatigue resistance and mechanical properties; the above conductive elastic structure can adjust the pressure sensor's conduction pressure threshold range, repeatability and hysteresis through structural design, electrical properties and mechanical properties.
  • the circuit board in the present application may be a flexible circuit board, a non-flexible circuit board or a film or sheet with a printed conductive layer.
  • the circuit board includes an electrode region including an electrode pair, and the difference between the range of the conduction pressure threshold and the corresponding conduction pressure threshold of the adjacent electrode pair is adjusted by adjusting the width, density, distribution, and thickness of the electrode pair electrode. value.
  • those skilled in the art can select conductive materials of different resistivity to form electrodes in the electrode pair according to actual conditions.
  • the projection of the conductive portion and the electrode region in the first plane in the present application may be performed as long as the "existing portion is satisfied, and the electrode portion corresponding to the overlapping portion must include at least two electrode pairs".
  • the application of the conduction pressure threshold scenario may be performed as long as the "existing portion is satisfied, and the electrode portion corresponding to the overlapping portion must include at least two electrode pairs".
  • the size of the projected area of the conductive portion and the electrode region on the first plane may be specifically set according to actual conditions.
  • the projected area of the conductive portion on the first plane may be smaller than the projected area of the electrode region on the first plane, or may be larger than the projected area of the electrode region on the first plane.
  • the pressure sensor can be applied in a plurality of on-voltage threshold scenarios.
  • the electrode region 11 is located at a central region of the circuit board 1
  • the projection of the electrode region 11 on the first plane is located at a projection of the conductive portion on the first plane.
  • the inside is overlapped with the projection of the conductive portion on the first plane, and the first plane is a plane perpendicular to the thickness direction of the circuit board 1.
  • each electrode pair in the present application corresponds to two electrodes, one cathode, one anode, and the anode and the cathode in the plurality of electrode pairs in the electrode region do not necessarily have a one-to-one correspondence, that is, the cathode
  • the number of anodes is not necessarily the same, and may be one-to-many, that is, one anode corresponds to multiple cathodes or one cathode corresponds to multiple anodes, for example, the electrode region includes five cathodes and one anode, and one anode and five cathodes Each of them forms an electrode pair to form five electrode pairs in the electrode region; it may also be a many-to-many, that is, a plurality of anodes correspond to a plurality of cathodes, for example, the electrode region includes two cathodes and four anodes, wherein Each cathode corresponds to two anodes, and each cathode forms an electrode pair with a corresponding an
  • the electrode region includes a plurality of anodes 102 and a plurality of cathodes 101.
  • the anode 102 is in one-to-one correspondence with the cathode 101, and one of the anodes 102 and the corresponding cathode 101 form an electrode pair 10.
  • the electrode region includes a cathode and a plurality of anodes, and the cathodes respectively form a plurality of the electrode pairs with the plurality of anodes, or the electrode region includes an anode and a plurality of cathodes, one The anode is formed with a plurality of the electrode pairs on the plurality of cathodes, and FIG. 5(b) shows a case where the anode 102 corresponds to the plurality of cathodes 101.
  • the electrode region 11 includes N pairs of the electrodes 10, which are respectively a first electrode pair and a second electrode. Pairs, ... X-1 electrode pairs, Xth electrode pairs, X+1 electrode pairs, ...
  • each of the electrode pairs 10 includes a cathode 101 and an anode 102, X-1
  • the projection of the electrode pair 10 in the electrode region 11 is located at the Xth electrode pair 10 in the electrode region 11
  • the inside of the projection, and the cathode 101 of the X+1th electrode pair 10 is located on the side of the cathode 101 of the Xth electrode pair 10 away from the cathode 101 of the X-1th electrode pair 10, and
  • the anode 102 of the X+1 electrode pairs 10 is located on the side of the anode 102 of the Xth electrode pair 10 away from the anode 102 of the X-1th electrode pair 10.
  • the electrode pairs are disposed away from the center of the electrode region in turn, and the electrodes are disposed on the two sides of the center, respectively.
  • the cathode and the anode are respectively disposed on both sides of the center.
  • the anode 102 includes an arc segment 01, a vertical segment 03, and an inclined segment 02 connected between the arc segment 01 and the vertical segment 03 described above.
  • the inclined segments of each of the cathodes or the anodes are on a same straight line.
  • 5(a), 5(c) and 5(e) show the case where the inclined sections 02 of the respective cathodes 101 are on the same straight line; and Fig. 5(d) shows the inclined sections of the respective anodes 102. 02 on the same line.
  • cathode and the anode described above are not necessarily limited to those having an arc segment, a sloped segment, and a vertical segment. Those skilled in the art may select the specific structures of the two according to actual conditions, and may have the above structures or may Without the above structure, one of them may have the above structure.
  • each of the cathodes 101 and each of the anodes 102 sequentially includes a first horizontal section 04, a first vertical section 05, and a second horizontal section 06, and a second vertical section 07, wherein the first horizontal section 04 is parallel to the second horizontal section 06, the first vertical section 05 is parallel to the second vertical section 07, and the first vertical section 05 is connected to the first Between the horizontal section 04 and the second horizontal section 06, the second horizontal section 06 is connected between the first vertical section 05 and the second vertical section 07.
  • each cathode 101 is the same as that of the cathode 101 shown in Fig. 5(b).
  • the anode 102 differs from the anode of FIG. 5(b) in that the anode 102 does not include the arc segment 01 and includes the sector-shaped metal piece 01', and the anode of the structure can better control its cathode 102.
  • the sequence is turned on, which in turn enables the pressure sensor to be better applied to multiple scenarios of conduction pressure thresholds.
  • the second horizontal segments of each of the cathodes or the anodes are on the same straight line.
  • Figure 5(f) shows the second horizontal section 06 of each anode 102 on the same line.
  • the cathode and the anode are not necessarily limited to the structure having the first horizontal segment, the first vertical segment, the second horizontal segment, and the second vertical segment, and those skilled in the art may select the specific structures of the two according to actual conditions, and may The above structure may not have the above-described structure, and one of them may have the above structure.
  • the circuit board 1 further includes a non-electrode region 12, and the non-electrode region 12 is disposed around the electrode region 11.
  • the non-electrode area is arranged to facilitate the fixing of the circuit board and the conductive elastic structure.
  • the circuit board of the present application includes a substrate and a plurality of electrode pairs disposed in or on the surface of the substrate.
  • the plurality of electrode pairs are spaced apart, and the region where the plurality of electrode pairs are located is the electrode region.
  • the other features of the circuit board such as the material of the electrode and the material of the substrate, are the same as in the prior art. I won't go into details.
  • the shape of the conductive elastic structure in the present application may be any shape that can achieve the technical effects of the present application, and may be a cylinder, a rectangular parallelepiped or an irregular shape.
  • a person skilled in the art can set a conductive elastic structure of a suitable shape according to actual conditions.
  • the first region 21 is close to the electrode.
  • the surface of the region 11 is a curved surface or a flat surface, and the surface of the first region 21 remote from the electrode region 11 is a curved surface or a flat surface.
  • the second region 22 is close to The surface of the circuit board protrudes from the surface of the first area near the circuit board, and the surface of the first area 21 away from the electrode area 11 protrudes from the surface of the second area 22 away from the electrode area 11.
  • the conductive elastic structure 2 further includes a first portion 21 disposed around the first region 21 In the second region 22, when no pressure is applied to the conductive elastic structure 2, the distance between the surface of the first region 21 close to the electrode region 11 and the circuit board 1 is D in the thickness direction of the circuit board 1. 1.
  • the distance between the surface of the second region 22 adjacent to the electrode region 11 and the circuit board 1 is D 2 , D 1 > D 2 .
  • the first region 21 includes a plurality of first sub-regions 210, and when the pressure is not applied to the conductive elastic structure 2, the above-mentioned different The spacing between a sub-region 210 and the electrode region 11 at a corresponding location is different, and the "corresponding position" herein means directly below.
  • the electrode region 11 includes a plurality of electrode sub-regions 110, and the first sub-region 210 is The electrode sub-regions 110 are disposed one by one, and the spacing between the different first sub-regions 210 and the electrode sub-regions 110 at the corresponding positions is different, and the “corresponding position” herein refers to the lower side.
  • the electrode pair may be disposed on the surface of the substrate, it may be disposed in the substrate. Therefore, the electrode sub-region may be a region including only the electrode, or may be a region including the substrate and the electrode. When it is a region including only electrodes, the pitch is different from that of the circuit board or the first sub-region by setting the electrodes to different thicknesses, as shown in FIGS. 5(d) and 5(e).
  • the pressure sensor including the electrode sub-region does not necessarily include the first sub-region, and may not include the first sub-region, and the first sub-region and the electrode sub-region may exist separately in the pressure sensor, or At the same time, it exists in the pressure sensor, and can be set according to actual conditions by those skilled in the art.
  • the pressure sensor further includes a connecting portion 3 disposed on the non-electrode region 12 and the above Between the second regions 22, the non-electrode region 12 and the second region 22 are fixedly connected.
  • the material of the connecting portion in the present application may be a metal material, an organic material and/or an inorganic non-metal material, and the connecting member may connect the circuit board and the conductive elastic structure in a manner of bonding, splicing, welding, hinge, locking, and One or more of the threaded connections.
  • the raw material of the connecting portion is a polymer material, and the connection method is bonding.
  • a specific type of connecting portion may be a solvent type adhesive tape, an emulsion type adhesive tape, a hot melt adhesive tape, a pressure sensitive adhesive tape, a calendered adhesive tape or a reactive adhesive tape.
  • the connecting portion is a pressure-sensitive adhesive tape, which further ensures the reliability of the connection of the conductive elastic structure to the circuit board.
  • the pressure sensor further includes an elastic fixing member 4 disposed on the non-electrode region 12 and surrounding the conductive elastic structure 2 for The above-described conductive elastic structure 2 and the above-described circuit board 1 are fixed.
  • the material of the elastic fixing member may be one or more selected from the group consisting of acrylic resin, epoxy resin, hot melt adhesive, unsaturated polyester, room temperature vulcanized silicone rubber and high temperature vulcanized silicone rubber.
  • the material of the elastic fixing member is selected from room temperature vulcanized silicone rubber, and the material can be composited onto the conductive plate by means of dispensing, coating, bonding, injection molding, etc. and surrounding the elastic conductive material. structure.
  • the elastic fixing member 4 is an elastic fixing ring.
  • the elastic fixing ring has a simple structure and is convenient to install.
  • the method for manufacturing the pressure sensor in the present application may be any method for obtaining the pressure sensor.
  • the method for preparing the pressure sensor includes the following steps: preparing the conductive layer and the elastomer material through a molding process. To the point of elastic structure; when the conductive elastic structure is fixedly connected to the circuit board by bonding, after bonding, applying a normal pressure to the elastic conductive structure for a certain period of time (parallel direction of the parallel circuit board) to increase the viscosity
  • the connecting member is used to fix the conductive elastic structure to the circuit board.
  • the manufacturing method further comprises the process of compounding the material of the elastic fixing member around the conductive elastic structure and on the circuit board.
  • a wearable device including a pressure sensor, and the pressure sensor is any one of the above-described pressure sensors.
  • the wearable device has a plurality of conduction pressure thresholds, which makes it more practical, and the output signal of the pressure sensor in the wearable device is a step signal, so that it is not required to undergo analog-to-digital conversion later.
  • the signal processing device in the device is simpler.
  • the wearable device may be a wearable smart textile such as a smart shoe, a smart insole, a smart sock, a smart seat, and a smart wear.
  • a wearable smart textile such as a smart shoe, a smart insole, a smart sock, a smart seat, and a smart wear.
  • it is not limited to the above-mentioned wearable devices, and those skilled in the art can apply the above pressure sensors to any applicable field according to actual conditions.
  • the pressure sensor in the present application can be applied to a plurality of scenes in which the pressure threshold is turned on, and the signal outputted by the pressure sensor itself is a step type signal, which can facilitate subsequent digitization without analog-digital conversion, which can be simplified. Subsequent signal processing systems.
  • the wearable device of the present application has a plurality of conduction pressure thresholds, so that the utility model is more practical, and the output signal of the pressure sensor in the wearable device is a step signal, so there is no need to pass the mode later.
  • the number conversion makes the signal processing device in the device simpler.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measuring Fluid Pressure (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

一种压力传感器和可穿戴设备。该压力传感器包括电路板（1）与导电弹性结构（2），其中，电路板（1）包括电极区域（11），电极区域（11）包括间隔设置的多个电极对（10）；导电弹性结构（2）设置在电路板（1）的一侧，包括第一区域（21），第一区域（21）包括导电部，当未向导电弹性结构（2）施加压力时，导电部与各电极对（10）处于隔离状态，使得各电极对（10）处于断开状态，当向导电弹性结构（2）施加大于导通压力阈值的压力时，导电弹性结构（2）发生形变，使得导电部与至少一个电极对（10）接触，使得至少一个电极对（10）导通，不同的电极对（10）的导通压力阈值不同。该压力传感器能够应用于多个导通压力阈值的场景。

Description

压力传感器和可穿戴设备 技术领域
本申请涉及传感器领域，具体而言，涉及一种压力传感器和可穿戴设备。
背景技术
用于智能可穿戴电子设备的压力传感器已有相关报道。其主要的局限性在于压力开关导通压强单一，无法应用于多个导通压力阈值的应用场景；并且，这些压力传感器的输出信号连续模拟信号，需进行模数转换转换为数字信号才能进行后续的信号处理。
发明内容
本申请的主要目的在于提供一种压力传感器和可穿戴设备，以解决现有技术中的压力传感器无法应用于多个导通压力阈值场景的问题。
为了实现上述目的，根据本申请的一个方面，提供了一种压力传感器，该压力传感器包括：电路板，包括电极区域，上述电极区域包括间隔设置的多个电极对；导电弹性结构，设置在上述电路板的一侧，包括第一区域，上述第一区域包括导电部，当未向上述导电弹性结构施加压力时，上述导电部与各上述电极对处于隔离状态，使得各上述电极对处于断开状态，当向上述导电弹性结构施加大于导通压力阈值的压力时，上述导电弹性结构发生形变，使得上述导电部与至少一个上述电极对接触，使得至少一个上述电极对导通，不同的上述电极对的导通压力阈值不同。
进一步地，上述电极区域位于上述电路板的中心区域，上述电极区域在与上述电路板的厚度方向垂直的第一平面的投影位于上述导电部在上述第一平面的投影的内部或与上述导电部在上述第一平面的投影重合。
进一步地，上述电极区域包括多个阴极与多个阳极，上述阴极与上述阳极一一对应，且一个上述阴极与对应的上述阳极形成一个上述电极对；或者上述电极区域包括一个阴极与多个阳极，一个上述阴极分别与多个上述阳极形成多个上述电极对；或者上述电极区域包括一个阳极与多个阴极，一个上述阳极分别于多个上述阴极形成多个上述电极对。
进一步地，上述电极区域包括N个上述电极对，其中，第X-1个上述电极对在上述电极区域的投影位于第X个上述电极对在上述电极区域的投影的内部，且第X+1个上述电极对中的上述阴极位于第X个上述电极对的上述阴极的远离第X-1个上述电极对的上述阴极的一侧，且第X+1个上述电极对中的上述阳极位于第X个上述电极对的上述阳极的远离第X-1个上述电极对的上述阳极的一侧。
进一步地，各上述阴极与各上述阳极包括弧段、竖直段以及连接在上述弧段与上述竖直段之间的倾斜段。
进一步地，上述电极区域包括一一对应的上述阴极与上述阳极，各上述阴极或各上述阳极的上述倾斜段在同一条直线上。
进一步地，各上述阴极与各上述阳极依次包括第一水平段、第一垂直段、第二水平段以及第二垂直段，其中，上述第一水平段与上述第二水平段平行，上述第一垂直段与上述第二垂直段平行，且上述第一垂直段连接在上述第一水平段与上述第二水平段之间，上述第二水平段连接在上述第一垂直段与上述第二垂直段之间。
进一步地，各上述电极对包括一一对应的上述阴极与上述阳极，各上述阴极或各上述阳极的上述第二水平段在同一条直线上。
进一步地，上述第一区域包括多个第一子区域，上述电极区域包括多个电极子区域，上述第一子区域与上述电极子区域一一对应设置，且当未向上述导电弹性结构施加压力时，不同的上述第一子区域与对应位置的上述电极子区域之间的间距不同。
进一步地，上述电路板还包括围绕上述电极区域设置的非电极区域，上述导电弹性结构还包括围绕上述第一区域设置的第二区域，上述压力传感器还包括：连接部，设置在上述非电极区域与上述第二区域之间，用于固定连接上述非电极区域与上述第二区域，优选上述连接部为压敏性胶粘带。
进一步地，上述电路板还包括围绕上述电极区域设置的非电极区域，上述压力传感器还包括：弹性固定件，设置在上述非电极区域上且围绕上述导电弹性结构，用于固定上述导电弹性结构与上述电路板，优选上述弹性固定件为弹性固定圈。
根据本申请的另一方面，提供了可穿戴设备，包括压力传感器，该压力传感器为任一种上述的压力传感器。
应用本申请的技术方案，本申请中的压力传感器的电路板包括多个电极对，不同的电极对对应的导通压力阈值不同，即向导电弹性结构施加不同的压力(该压力大于导通压力阈值)时，不同的电极对导通，例如当电路板包括三个电极对，分别为第一电极对、第二电极对与第三电极对，这三个电极对对应第一导通压力阈值、第二导通压力阈值与第三导通压力阈值，当向导电弹性结构施加的压力小于第一导通压力阈值时，导电弹性结构发生形变，但不足以让导电区域与任何一个电极对接触，即三个电极对均不导通，当施加的压力大于第一导通压力阈值且小于第二导通压力阈值时，导电弹性结构发生形变使得第一电极对与导电区域接触，进而使得第一电极对导通，当压力逐渐增大且介于第二导通压力阈值与第三导通压力阈值之间时，导电弹性结构的形变逐渐增大，使得第二电极对与导电区域接触，进而使得第二电极对也导通，当压力继续增大且大于第三导通压力阈值时，导电弹性结构的形变进一步增大，使得第三电极对与导电区域接触，进而使得第三电极对也导通。通过对导电弹性结构施加的压力逐渐增大时，依次导通不同的电极对，进而能够应用于多个导通压力阈值的场景。
附图说明
构成本申请的一部分的说明书附图用来提供对本申请的进一步理解，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：
图1示出了根据本申请的一种实施例提供的压力传感器的结构示意图；
图2示出了本申请的另一种实施例提供的压力传感器在不同工作状态时的结构示意图；
图3示出了本申请的再一种实施例提供的压力传感器在不同工作状态时的结构示意图；
图4示出了本申请的又一种实施例提供的压力传感器在不同工作状态时的结构示意图；
图5(a)、图5(b)、图5(c)、图5(d)、图5(e)、图5(f)与图5(g)示出了本申请的七种实施例提供电路板的结构示意图；以及
图6(a)、图6(b)、图6(c)、图6(d)与图6(e)示出了本申请的五种实施例提供的导电弹性结构的结构示意图。
其中，上述附图包括以下附图标记：
1、电路板；2、导电弹性结构；3、连接部；4、弹性固定件；11、电极区域；12、非电极区域；21、第一区域；22、第二区域；10、电极对；101、阴极；102、阳极；01、弧段；02、倾斜段；03、竖直段；04、第一水平段；05、第一垂直段；06、第二水平段；07、第二垂直段；210、第一子区域；110、电极子区域；01’、扇形金属片。
具体实施方式
应该指出，以下详细说明都是例示性的，旨在对本申请提供进一步的说明。除非另有指明，本文使用的所有技术和科学术语具有与本申请所属技术领域的普通技术人员通常理解的相同含义。
需要注意的是，这里所使用的术语仅是为了描述具体实施方式，而非意图限制根据本申请的示例性实施方式。如在这里所使用的，除非上下文另外明确指出，否则单数形式也意图包括复数形式，此外，还应当理解的是，当在本说明书中使用术语“包含”和/或“包括”时，其指明存在特征、步骤、操作、器件、组件和/或它们的组合。
正如背景技术所介绍的，现有技术中的压力传感器无法应用于多个导通电压阈值的场景，为了解决如上的技术问题，本申请提出了一种压力传感器和可穿戴设备。
本申请的一种典型的实施方式中，提供了一种压力传感器，如图1所示，该压力传感器包括：电路板1，包括电极区域11与导电弹性结构2，其中，上述电极区域11包括多个间隔设置的电极对10；导电弹性结构2设置在上述电路板1的一侧，包括第一区域21，上述第一区域21包括导电部，如图2至图4示出了本申请的压力传感器在不同状态(未施加压力以及施加不同的压力对应的状态)时的结构示意图，当未向上述导电弹性结构2施加压力时，上述 导电部与各上述电极对10处于隔离状态，使得各上述电极对10处于断开状态，当向上述导电弹性结构2施加大于导通压力阈值的压力时，上述导电弹性结构2发生形变，上述导电部与至少一个上述电极对10接触，使得至少一个上述电极对10导通，不同的上述电极对10的导通压力阈值不同。
上述的压力传感器的电路板包括多个电极对，不同的电极对对应的导通压力阈值不同，即向导电弹性结构施加不同的压力(该压力大于导通压力阈值)时，不同的电极对导通，例如当电路板包括三个电极对，分别为第一电极对、第二电极对与第三电极对，这三个电极对对应第一导通压力阈值、第二导通压力阈值与第三导通压力阈值，当未向导电弹性结构施加压力时，导电弹性结构未发生形变，导电弹性结构的导电部与电极区域中的各电极对处于隔离状态，压力传感器处于断路状态，当向导电弹性结构施加的压力小于第一导通压力阈值时，导电弹性结构发生形变，但不足以让导电区域与任何一个电极对接触，即三个电极对均不导通，当施加的压力大于第一导通压力阈值且小于第二导通压力阈值时，导电弹性结构发生形变使得第一电极对与导电区域接触，进而使得第一电极对导通，当压力逐渐增大且介于第二导通压力阈值与第三导通压力阈值之间时，导电弹性结构的形变逐渐增大，使得第二电极对与导电区域接触，进而使得第二电极对也导通，当压力继续增大且大于第三导通压力阈值时，导电弹性结构的形变进一步增大，使得第三电极对与导电区域接触，进而使得第三电极对也导通。
通过对导电弹性结构施加的压力逐渐增大时，依次导通不同的电极对，进而使得该压力传感器能够应用于多个导通压力阈值的场景。当压力撤除时，导电弹性结构复位，电极对与导电部恢复隔离的状态。
另外，压力传感器的导通压力阈值的范围以及导通压力阈值的阶跃精度(即相邻电极对对应的两个导通压强阈值之间的差值)可以通过电路板上的电极对中的电极的形状、大小、高低、密度及分布来调节。另外，还可以通过改变导电弹性结构的电学性能、力学性能及几何结构来调节压力传感器的压强测量范围、重复性及迟滞。
并且，现有技术中的压力传感器输出的信号为连续模拟信号，这些模拟信号需模数转换变成数字信号才能方便后续数据的处理，而本申请中的压力传感器输出的信号本身就是阶跃式信号，无需进行模数转换就可方便进行后续的数字化处理，可以简化后续的信号处理系统。
本申请中的导电弹性结构可以包括由导电材料形成的导电层与由弹性材料形成的弹性体，其中，导电层作为导电部，具体地，导电层通过层压、涂覆、粘合、注塑或共混等成型加工工艺与弹性材料复合形成导电弹性结构，另外，可以根据实际情况选择不同电阻率的材料。
本申请中的导电弹性结构还可以包括由导电材料与弹性材料形成的复合材料的导电部，具体可以通过共混、层压、涂覆、粘合或注塑形成弹性导电结构。
本申请中的导电弹性结构中的弹性材料可以是聚氨酯树脂、聚氨酯软泡、硅橡胶、聚丙烯酸树脂、弹性嵌段共聚物与弹性金属中一种或多种，上述弹性导电结构具有优良的回弹性、 耐疲劳性以及机械性能；上述导电弹性结构可以通过结构设计、电学性能和力学性能来调整压力传感器的导通压力阈值范围、重复性和迟滞。
本申请中的电路板可为柔性电路板、非柔性电路板或带有印刷导电层的薄膜或板材。电路板包括电极区域，电极区域包括电极对，通过调整电极对中电极的宽窄、密度、分布及厚度来调节导通压力阈值的范围以及相邻的电极对对应的导通压力阈值之间的差值。另外，本领域技术人员可以根据实际情况选择不同电阻率的导电材料形成电极对中的电极。
本申请中的导电部与电极区域在第一平面上的投影只要满足“有重合的部分，并且该重合的部分对应的电极区域必须包括至少两个电极对”即可，这样才可以实现多个导通压力阈值场景的应用。
具体地，在满足上述条件的基础上，导电部与电极区域在第一平面上的投影的面积的大小可以根据实际情况具体设置。例如导电部在第一平面上的投影面积可以小于电极区域在第一平面上的投影的面积，也可以大于电极区域在第一平面上的投影的面积。
为了实现电极区域中的各电极对均导通，进一步保证该压力传感器可以应用在多个导通电压阈值的场景中。本申请的一种实施例中，如图2所示，上述电极区域11位于上述电路板1的中心区域，上述电极区域11在第一平面的投影位于上述导电部在上述第一平面的投影的内部或与上述导电部在上述第一平面的投影重合，第一平面为与上述电路板1的厚度方向垂直的平面。
需要说明的是，本申请中的每个电极对对应两个电极，一个阴极，一个阳极，并且，电极区域中的多个电极对中的阳极与阴极并不一定是一一对应的，即阴极与阳极的数目不一定相同，还可以是一对多，即一个阳极对应多个阴极或一个阴极对应多个阳极，例如电极区域中包括五个阴极与一个阳极，这一个阳极与五个阴极中的每一个都形成一个电极对，进而形成该电极区域中的五个电极对；还可以是多对多，即多个阳极对应多个阴极，例如电极区域包括两个阴极与四个阳极，其中，每个阴极对应两个阳极，每个阴极与对应的阳极形成一个电极对，进而形成该电极区域中的四个电极对。
本申请的一种实施例中，如图5(a)、图5(c)、图5(d)与图5(e)所示，上述电极区域包括多个阳极102与多个阴极101，且阳极102与上述阴极101一一对应，且一个上述阳极102与对应的上述阴极101形成一个电极对10。
本申请的另一种实施例中，上述电极区域包括一个阴极与多个阳极，一个上述阴极分别与多个上述阳极形成多个上述电极对，或者上述电极区域包括一个阳极与多个阴极，一个上述阳极分别于多个上述阴极形成多个上述电极对，图5(b)示出的是一个阳极102对应多个阴极101的情况。
本申请的一种具体的实施例中，如图5(a)至图5(g)所示，上述电极区域11包括N个上述电极对10，分别是第一个电极对、第二个电极对、…第X-1个电极对、第X个电极对、第X+1个电极对…第N个电极对，各上述电极对10包括一个阴极101与一个阳极102，第X-1个上述电极对10在上述电极区域11的投影位于第X个上述电极对10在上述电极区域11 的投影的内部，且第X+1个上述电极对10中的阴极101位于第X个上述电极对10的阴极101的远离第X-1个上述电极对10的阴极101的一侧，且第X+1个上述电极对10中的阳极102位于第X个上述电极对10的阳极102的远离第X-1个上述电极对10的阳极102的一侧。这样将电极对依次远离电极区域的中心设置且将各电极对阴极与阳极分别设置在该中心的两侧，当对导电弹性体施加的压力逐渐增大时，电极对依次导通，进一步确保了该压力传感器能够应用于多个导通压力阈值的场景中。
本申请的另一种实施例中，如图5(a)、图5(b)、图5(c)、图5(d)与图5(e)所示，各上述阴极101与各上述阳极102包括弧段01、竖直段03以及连接在上述弧段01与上述竖直段03之间的倾斜段02。
为了简化该压力传感器的制作工艺，本申请的一种实施例中，当上述电极区域包括一一对应的上述阴极与阳极时，各上述阴极或各上述阳极的上述倾斜段在同一条直线上，如图5(a)、图5(c)与图5(e)示出了各阴极101的倾斜段02在同一条直线上的情况；图5(d)示出了各阳极102的倾斜段02在同一条直线上的情况。
但是，上述的阴极与阳极并不一定限于均具有弧段、倾斜段以及竖直段的结构，本领域技术人员可以根据实际情况选择二者的具体结构，可以均具有上述的结构，也可以均不具有上述的结构，也可以是其中的一个具有上述结构。
本申请中的另一种实施例中，如图5(f)所示，上述各上述阴极101与各上述阳极102依次包括第一水平段04、第一垂直段05、第二水平段06以及第二垂直段07，其中，上述第一水平段04与上述第二水平段06平行，上述第一垂直段05与上述第二垂直段07平行，且上述第一垂直段05连接在上述第一水平段04与第二水平段06之间，上述第二水平段06连接在上述第一垂直段05与上述第二垂直段07之间。
本申请的再一种实施例中，如图5(g)所示的是一个阳极102对应多个阴极101的情况，各阴极101的结构与图5(b)所示的阴极101的结构相同，对于阳极102来说，其与图5(b)的阳极的区别在于，阳极102不包括弧段01，而包括扇形金属片01’，该结构的阳极可以更好地控制其与阴极102的接通顺序，进而使得该压力传感器能够更好地应用于多个导通压力阈值的场景。
为了简化该压力传感器的制作工艺，本申请的一种实施例中，当上述电极区域包括一一对应的上述阴极与阳极时，各上述阴极或各上述阳极的上述第二水平段在同一条直线上，图5(f)示出了各阳极102的第二水平段06在同一条直线上。
当然，阴极与阳极并不一定限于均具有第一水平段、第一垂直段、第二水平段以及第二垂直段的结构，本领域技术人员可以根据实际情况选择二者的具体结构，可以均具有上述的结构，也可以均不具有上述的结构，也可以是其中的一个具有上述结构。
本申请的再一种实施例中，如图2所示，上述电路板1还包括非电极区域12，上述非电极区域12围绕上述电极区域11设置。非电极区域的设置方便电路板与导电弹性结构的固定。
本申请的电路板包括基底与设置在基底中或者基底表面上的多个电极对，多个电极对间隔设置，且多个电极对所在的区域即为电极区域。本申请中的电路板中除了电极的结构以及设置方式与现有技术中的不同之外，电路板的其他的特征，比如电极的材料以及基底的材料均与现有技术中的相同，此处就不再赘述了。
本申请中的导电弹性结构的形状可以是任何可以实现本申请的技术效果的形状，可以是圆柱体、长方体或者不规则的形状。本领域技术人员可以根据实际情况设置合适形状的导电弹性结构。
本申请的一种实施例中，如图6(a)、图6(b)、图6(c)、图6(d)与图6(e)所示，上述第一区域21靠近上述电极区域11的表面为曲面或平面，上述第一区域21的远离上述电极区域11的表面为曲面或平面。
本申请中的另一种实施例中，如图6(a)、图6(b)、图6(c)、图6(d)与图6(e)所示，上述第二区域22靠近上述电路板的表面突出于第一区域靠近电路板的表面，上述第一区域21的远离上述电极区域11的表面突出于上述第二区域22的远离上述电极区域11的表面。
为了更好地将上述弹性导电结构固定在上述电路板上，本申请的一种实施例中，如图2与图4所示，上述导电弹性结构2还包括围绕上述第一区域21设置的第二区域22，当未向上述导电弹性结构2施加压力时，在上述电路板1的厚度方向上，上述第一区域21的靠近上述电极区域11的表面与上述电路板1之间的距离为D1，上述第二区域22的靠近上述电极区域11的表面与上述电路板1之间的距离为D2，D1＞D2。
本申请的又一种实施例中，如图3与图4所示，上述第一区域21包括多个第一子区域210，且当未向上述导电弹性结构2施加压力时，不同的上述第一子区域210与对应位置的电极区域11之间的间距不同，这里的“对应位置”就是指正对下方的。
为了更好地控制多个电极对的导通，本申请的一种实施例中，如图3与图4所示，上述电极区域11包括多个电极子区域110，上述第一子区域210与上述电极子区域110一一对应设置，且不同的上述第一子区域210与对应位置的上述电极子区域110之间的间距不同，这里的“对应位置”就是指正对下方的。
由于电极对可以是设置在基底的表面上，也可以是设置在基底中，因此，上述的电极子区域可以是只包括电极的区域，也可以是包括基底与电极的区域。当是只包括电极的区域时，通过将电极设置为不同的厚度进而实现与电路板或者第一子区域之间的间距不同，如图5(d)与图5(e)所示。
另外需要说明的是，包括电极子区域的压力传感器并不一定包括第一子区域，也可以不包括第一子区域，第一子区域与电极子区域均可以单独存在于压力传感器中，也可以同时存在于压力传感器中，本领域技术人员可以根据实际情况进行设置。
为了更好地将导电弹性结构固定在电路板上，本申请的一种实施例中，如图2与图4所示，上述压力传感器还包括连接部3，设置在上述非电极区域12与上述第二区域22之间，用于固定连接上述非电极区域12与上述第二区域22。
本申请中的连接部的材料可以是金属材料、有机材料和/或无机非金属材料，连接件使电路板与导电弹性结构连接的方式可为粘接、榫接、焊接、铰接、锁扣以及螺纹连接中的一种或多种。
为了以简单的方式实现电路板与导电弹性结构连接，上述连接部的原料为高分子材料，上述连接方式为粘接。具体的连接部可选用溶剂型胶粘带、乳液型胶粘带、热熔型胶粘带、压敏型胶粘带、压延型胶粘带或反应型胶粘带。
本申请的另一种实施例中，上述连接部为压敏性胶粘带，这样可以更进一步确保导电弹性结构与电路板的连接的可靠性。
为了进一步使得压力传感器中的电路板、导电弹性结构牢固地连接在一起，且进一步保证增强压力传感器的抗剪切性能、抗冲击性能以及疲劳性能。本申请的一种实施例中，如图1与图2所示，上述压力传感器还包括弹性固定件4，弹性固定件4设置在上述非电极区域12上且围绕上述导电弹性结构2，用于固定上述导电弹性结构2与上述电路板1。
上述弹性固定件的材料可选用丙烯酸树脂、环氧树脂、热熔胶、不饱和聚酯、室温硫化硅橡胶与高温硫化硅橡胶中的一种或多种。
为了简化工艺，本申请中的一种实施例中，弹性固定件的材料选择室温硫化硅橡胶，该材料可通过点胶、涂覆、粘合、注塑等工艺复合到导电板上且围绕弹性导电结构。
本申请的再一种实施例中，如图1所示，上述弹性固定件4为弹性固定圈。弹性固定圈结构简单，安装方便。
本申请中的压力传感器的制作方法可以是任何可以得到该压力传感器的方法，具体的一种实施例中，压力传感器的制备方法包括以下步骤：将导电层与弹性体材料经过成型加工工艺制备成到点弹性结构；当采用粘结的方式将导电弹性结构与电路板固定连接时，在粘结后，对弹性导电结构施加一定时长的法向压力(平行电路板的厚度方向)，以增加粘合强度，采用连接件将导电弹性结构与电路板固定连接。
另一种具体的实施例中，上述制作方法还包括将上述弹性固定件的材料经工艺复合到导电弹性结构的周围且位于电路板上。
本申请的再一种典型的实施方式中，提供了一种可穿戴设备，该可穿戴设备包括压力传感器，上述压力传感器为任一种上述的压力传感器。
该可穿戴设备具有多个导通压力阈值，使得其的实用性更强，且该可穿戴设备中的压力传感器的输出信号由于是阶跃式信号，所以后期不需要经过模数转换，使得该设备中的信号处理装置更简单。
具体地，该可穿戴设备可以是智能鞋、智能鞋垫、智能袜子、智能坐垫以及智能服装等可穿戴智能纺织品。但是并不限于上述提到的这些可穿戴设备，本领域技术人员可以根据实际情况将上述压力传感器应用在任何可以应用的领域中。
从以上的描述中，可以看出，本申请上述的实施例实现了如下技术效果：
1)、本申请中的压力传感器能够应用于多个导通压力阈值的场景，且压力传感器输出的信号本身就是阶跃式信号，无需进行模数转换就可方便进行后续的数字化处理，可以简化后续的信号处理系统。
2)、本申请的可穿戴设备具有多个导通压力阈值，使得其的实用性更强，且该可穿戴设备中的压力传感器的输出信号由于是阶跃式信号，所以后期不需要经过模数转换，使得该设备中的信号处理装置更简单。
以上所述仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (12)

  1. 一种压力传感器，其特征在于，所述压力传感器包括：
    电路板(1)，包括电极区域(11)，所述电极区域(11)包括间隔设置的多个电极对(10)；以及
    导电弹性结构(2)，设置在所述电路板(1)的一侧，包括第一区域(21)，所述第一区域(21)包括导电部，当未向所述导电弹性结构(2)施加压力时，所述导电部与各所述电极对(10)处于隔离状态，使得各所述电极对(10)处于断开状态，当向所述导电弹性结构(2)施加大于导通压力阈值的压力时，所述导电弹性结构(2)发生形变，使得所述导电部与至少一个所述电极对(10)接触，使得至少一个所述电极对(10)导通，不同的所述电极对(10)的导通压力阈值不同。
  2. 根据权利要求1所述的压力传感器，其特征在于，所述电极区域(11)位于所述电路板(1)的中心区域，所述电极区域(11)在与所述电路板(1)的厚度方向垂直的第一平面的投影位于所述导电部在所述第一平面的投影的内部或与所述导电部在所述第一平面的投影重合。
  3. 根据权利要求1所述的压力传感器，其特征在于，
    所述电极区域(11)包括多个阴极(101)与多个阳极(102)，所述阴极(101)与所述阳极(102)一一对应，且一个所述阴极(101)与对应的所述阳极(102)形成一个所述电极对(10)；或者
    所述电极区域(11)包括一个阴极(101)与多个阳极(102)，一个所述阴极(101)分别与多个所述阳极(102)形成多个所述电极对(10)；或者
    所述电极区域(11)包括一个阳极(102)与多个阴极(101)，一个所述阳极(102)分别于多个所述阴极(101)形成多个所述电极对(10)。
  4. 根据权利要求3所述的压力传感器，其特征在于，所述电极区域(11)包括N个所述电极对(10)，其中，第X-1个所述电极对(10)在所述电极区域(11)的投影位于第X个所述电极对(10)在所述电极区域(11)的投影的内部，且第X+1个所述电极对(10)中的所述阴极(101)位于第X个所述电极对(10)的所述阴极(101)的远离第X-1个所述电极对(10)的所述阴极(101)的一侧，且第X+1个所述电极对(10)中的所述阳极(102)位于第X个所述电极对(10)的所述阳极(102)的远离第X-1个所述电极对(10)的所述阳极(102)的一侧。
  5. 根据权利要求3所述的压力传感器，其特征在于，各所述阴极(101)与各所述阳极(102)包括弧段(01)、竖直段(03)以及连接在所述弧段(01)与所述竖直段(03)之间的倾斜段(02)。
  6. 根据权利要求5所述的压力传感器，其特征在于，所述电极区域(11)包括一一对应的所述阴极(101)与所述阳极(102)，各所述阴极(101)或各所述阳极(102)的所述倾斜段(02)在同一条直线上。
  7. 根据权利要求3所述的压力传感器，其特征在于，各所述阴极(101)与各所述阳极(102)依次包括第一水平段(04)、第一垂直段(05)、第二水平段(06)以及第二垂直段(07)，其中，所述第一水平段(04)与所述第二水平段(06)平行，所述第一垂直段(05)与所述第二垂直段(07)平行，且所述第一垂直段(05)连接在所述第一水平段(04)与所述第二水平段(06)之间，所述第二水平段(06)连接在所述第一垂直段(05)与所述第二垂直段(07)之间。
  8. 根据权利要求7所述的压力传感器，其特征在于，各所述电极对(10)包括一一对应的所述阴极(101)与所述阳极(102)，各所述阴极(101)或各所述阳极(102)的所述第二水平段(06)在同一条直线上。
  9. 根据权利要求1所述的压力传感器，其特征在于，所述第一区域(21)包括多个第一子区域(210)，所述电极区域(11)包括多个电极子区域(110)，所述第一子区域(210)与所述电极子区域(110)一一对应设置，且当未向所述导电弹性结构(2)施加压力时，不同的所述第一子区域(210)与对应位置的所述电极子区域(110)之间的间距不同。
  10. 根据权利要求1所述的压力传感器，其特征在于，所述电路板(1)还包括围绕所述电极区域(11)设置的非电极区域(12)，所述导电弹性结构(2)还包括围绕所述第一区域(21)设置的第二区域(22)，所述压力传感器还包括：
    连接部(3)，设置在所述非电极区域(12)与所述第二区域(22)之间，用于固定连接所述非电极区域(12)与所述第二区域(22)，优选所述连接部(3)为压敏性胶粘带。
  11. 根据权利要求1所述的压力传感器，其特征在于，所述电路板(1)还包括围绕所述电极区域(11)设置的非电极区域(12)，所述压力传感器还包括：
    弹性固定件(4)，设置在所述非电极区域(12)上且围绕所述导电弹性结构(2)，用于固定所述导电弹性结构(2)与所述电路板(1)，优选所述弹性固定件(4)为弹性固定圈。
  12. 一种可穿戴设备，包括压力传感器，其特征在于，所述压力传感器为权利要求1至11中任一项所述的压力传感器。
PCT/CN2017/087276 2017-01-23 2017-06-06 压力传感器和可穿戴设备 WO2018133287A1 (zh)

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