WO2007135895A1 - アレイ型静電容量式センサ - Google Patents
アレイ型静電容量式センサ Download PDFInfo
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- WO2007135895A1 WO2007135895A1 PCT/JP2007/059947 JP2007059947W WO2007135895A1 WO 2007135895 A1 WO2007135895 A1 WO 2007135895A1 JP 2007059947 W JP2007059947 W JP 2007059947W WO 2007135895 A1 WO2007135895 A1 WO 2007135895A1
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- substrate
- array
- capacitive sensor
- type capacitive
- spacer
- Prior art date
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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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
- 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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/024—Detecting, measuring or recording pulse rate or heart rate
- A61B5/0245—Detecting, measuring or recording pulse rate or heart rate by using sensing means generating electric signals, i.e. ECG signals
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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
Definitions
- the present invention relates to a sensor for measuring a pressure fluctuation waveform, and more particularly to an array type capacitive sensor.
- a sensing method using a capacitive element is known in addition to a sensing method using a strain resistance element.
- the sensing method using a capacitive element has a merit that it can be manufactured at low cost without using a semiconductor manufacturing process requiring a large manufacturing cost because the structure of the sensor element is simpler than that of the strain resistance element. is there.
- Non-Patent Document 1 As a sensing method using this capacitance element, for example, there are a tactile sensor described in Non-Patent Document 1 and a tactile sensor described in Non-Patent Document 2. Since these are pressure sensors with capacitive elements arranged in an array on the sensing surface, they are suitable for measuring pressure fluctuation waveforms.
- FIG. 26 is an external perspective view of the pressure detection unit of the tactile sensor described in Non-Patent Document 2
- FIG. 27 is an exploded perspective view of the pressure detection unit shown in FIG.
- FIG. 28 (a) is a plan view when the pressure detection unit shown in FIG. 26 is viewed from above
- FIG. 28 (b) is a schematic diagram showing the layout of the capacitive element.
- FIG. 29 is a circuit configuration diagram of the tactile sensor including the pressure detection unit shown in FIG.
- the tactile sensor 1E described in Non-Patent Document 2 mainly includes a lower electrode 11, an upper electrode 21, and a spacer member 31.
- the lower electrode 11 is composed of a plurality of strip-shaped copper foil electrodes extending in a substantially straight line and arranged in a row so as to run parallel to each other.
- the upper electrode 21 is composed of a plurality of strip-like copper foil electrodes extending in a substantially straight line and arranged in a row so as to run parallel to each other in a direction orthogonal to the lower electrode 11.
- a spacer member 31 having a silicon rubber force is arranged between the lower electrode 11 and the upper electrode 21. Is placed.
- the spacer member 31 causes a part of the lower electrode 11 and a part of the upper electrode 21 to face each other with a predetermined distance.
- a capacitive element 41 (see FIG. 28A) as a sensor element is formed at this intersection.
- the capacitance elements 41 are arranged in an array. They will be arranged side by side. The individual electrostatic capacitance elements 41 are distorted in a direction approaching each other due to the pressure applied to the upper electrode 21 or the lower electrode 11, so that the electrostatic capacitance changes.
- a power supply 60 is connected to one electrode of the lower electrode 11 or the upper electrode 21 arranged in a matrix form through a multiplexer 50, and the multiplexer 50 is similarly connected to the other electrode.
- the circuit configuration is such that the detector 70 is connected via the multiplexer 50, and the specific lower electrode 11 and upper electrode 21 are selected by the multiplexer 50, so that one of the electrostatic capacitance elements 41 arranged in an array is statically
- the capacitance of the capacitive element can be obtained via the detector 70.
- the capacitance of the capacitive element 1 indicated by reference numeral 42 is output. . Therefore, the pressure at an arbitrary position on the sensor surface of the tactile sensor 1E can be measured.
- FIG. 30 is a schematic configuration diagram of the surface pressure distribution sensor of Patent Document 1.
- the surface pressure distribution sensor 101 includes a row wiring portion 11 and a column wiring portion 12 that are arranged to face each other with a gap of a constant interval through a spacer 18.
- the row wiring portion 11 includes a glass substrate 13, a row wiring 14 arranged on the glass substrate 13 in parallel in the first direction, and an insulating film 15 covering the row wiring 14.
- the column wiring portion 12 includes
- the flexible film 16 includes a plurality of wiring lines 17 arranged in parallel on the flexible film 16 in the second direction.
- FIG. 31 is a schematic configuration diagram of the pressure pulse wave sensor of Patent Document 2 described above.
- the pressure pulse wave sensor 102 is mounted on the body surface in order to detect a pulse wave of a biological force.
- a plurality of piezoelectric sheets 16 arranged in the width direction are arranged in the width direction.
- the first sensor unit 12 is integrally fixed to the flexible sheet 18, and has the same structure as the first sensor unit 12.
- the first sensor unit 12 is rotated 90 degrees in the horizontal plane with respect to the first sensor unit 12.
- the second sensor unit 14 is laminated.
- Non-Patent Literature 1 R.S.Fearing, ⁇ actile sensing Mechanisms ⁇ , The International Journal of Robotics Research, June 1990, Vol.9, No.3, pp.3— 23
- Non-Patent Document 2 D.A.Kontarinis et al., ⁇ A Tactile Shape Sensing and Display System for Teleoperated Manipulation ⁇ ", IEEE International Conference on Robotics and Automation, 1995, pp.641—646
- Patent Document 1 Japanese Patent Publication “JP 2004-317403 Publication (Publication Date: January 11, 2004)”
- Patent Document 2 Japanese Published Patent Publication “Japanese Unexamined Patent Publication No. 2004-208711 (Publication Date: July 29, 2004)”
- FIG. 32 (a) shows the side surface of the tactile sensor in a normal state (when flat), and FIG. 32 (b) shows the side surface of the tactile sensor when bent.
- the sensor characteristics at the time of bending shown in (b) of FIG. 32 greatly vary from the sensor characteristics at the time of flatness shown in (a) of FIG. 32, and the sensitivity of the sensor is lowered. A point is created.
- the initial output increases.
- Patent Documents 1 and 2 described above. Specifically, in the configuration of the surface pressure distribution sensor of Patent Document 1, even a flexible film is applied to each column wiring. Is not independent, and in the configuration of the pressure pulse wave sensor of Patent Document 2, it is arranged. Further, since the piezoelectric sheet is fixed to a flexible sheet or an elastic substrate, there arises a problem that the sensor characteristics fluctuate when measuring on a curved surface.
- the present invention has been made in view of the above-described problems, and an object of the present invention is to provide an array-type electrostatic that can be manufactured at low cost and can accurately and stably measure pressure even on a bent surface. It is to provide a capacitive sensor.
- an array-type capacitive sensor of the present invention includes a first substrate on which at least two rows of first electrodes extending in parallel with each other are provided, There are provided at least two or more rows of second electrodes that are arranged to face the first substrate surface with a predetermined distance and extend in parallel to each other in a direction intersecting the extending direction of the first electrode.
- the array-type capacitive sensor comprising: the first substrate or the second substrate, the first electrode or the second electrode between the plurality of first electrodes or the plurality of second electrodes. Or a slit-like substrate slit portion extending in parallel with the second electrode.
- the first electrode or the second electrode is interposed between the plurality of first electrodes or the plurality of second electrodes on the first substrate or the second substrate.
- a slit-shaped substrate slit portion extending in parallel with the second electrode is provided.
- the substrate slit portion is disposed in the vicinity of the capacitive element formed by the first electrode and the second electrode.
- the substrate slit portion is interposed between the capacitive element and at least one of the capacitive elements adjacent to the capacitive element.
- the conventional array-type capacitive sensor is not provided with the substrate slit portion on either the first substrate or the second substrate. There is no substrate slit portion between them. Therefore, when the first substrate or the second substrate is deformed at the time of measuring the pressure, tensile stress or compressive stress acts on the first electrode and the second electrode that are arranged to face each other. As a result, pressure other than the pressure at which the measurement target force is also applied is applied to the capacitance element, which increases the initial output and makes accurate and stable pressure measurement impossible.
- the substrate slit portion is interposed between the first electrode and the second electrode when the first substrate or the second substrate is deformed on the bent surface or the like during pressure measurement, the first electrode or the second electrode is adjacent to each other. It will be deformed independently of the electrodes. Therefore, it is possible to reduce the influence from the adjacent substrate and electrode in the capacitive element corresponding to the deformed portion. Therefore, it is possible to accurately and stably measure the pressure applied to the measurement object force. Further, since it is not affected by the adjacent substrate and electrode force, crosstalk can be reduced as compared with a conventional array type capacitive sensor. Furthermore, since the substrate slit portion is provided on the first substrate or the second substrate, an array type capacitive sensor capable of accurate and stable pressure measurement can be manufactured at low cost. Can do.
- the array-type capacitive sensor of the present invention is the array-type capacitive sensor described above, wherein the substrate slit portion is the first substrate or the second substrate at the time of measurement. It is preferable to be provided in a direction perpendicular to the bending direction.
- the substrate slit portion is provided in a direction orthogonal to the bending direction of the first substrate or the second substrate at the time of measurement.
- the first substrate or the second substrate is bent along the shape of the wrist.
- the bending direction refers to a direction that bends when the array-type capacitive sensor is attached to the wrist of the subject, that is, a direction that is orthogonal to the extending direction of the artery.
- the substrate slit portion when the substrate slit portion is provided in a direction perpendicular to the bending direction, the first substrate or the second substrate bends with the substrate slit portion as a boundary. Compared with the case where the portion is provided in the bending direction, it is possible to reduce the influence of deformation imparted between adjacent electrostatic capacitance elements. Therefore, the pressure applied from the measurement object can be measured more accurately and stably. Moreover, since the influence from an adjacent board
- the array-type capacitive sensor of the present invention is the array-type capacitive sensor described above, wherein the predetermined capacitance is interposed between the first substrate and the second substrate.
- the spacer further includes a spacer, and the spacer intersects the projection region of the first electrode or the second electrode on the spacer in the longitudinal direction of the substrate slit portion. You It is preferable that a spacer opening extending in the direction to be provided is provided.
- the spacer includes a direction intersecting with a longitudinal direction of the substrate slit portion in a projection region of the first electrode or the second electrode on the spacer.
- a spacer opening extending to the surface is provided.
- the plurality of electrostatic capacitance elements formed by the first electrode and the second electrode are surrounded by the substrate slit portion and the spacer, respectively. That is, a substrate opening or a spacer is interposed between adjacent capacitance elements. Therefore, since the spacer is interposed between the capacitive elements in which the substrate slit portion is not interposed, it is possible to further reduce the influence of the deformation of the adjacent capacitive elements. Therefore, the pressure applied from the measurement object can be measured more accurately and stably, and the crosstalk can be further reduced.
- the array-type capacitive sensor of the present invention is the above-described array-type capacitive sensor, wherein the spacer is projected onto the spacer by the substrate slit portion. It is preferable that a plurality of slit-like spacer slit portions extending in parallel with the substrate slit portion are provided in the region.
- the spacer is provided with the spacer slit portion in the same direction in the substrate slit portion, the first substrate or the second substrate at the time of pressure measurement is provided. It becomes easy to deform. Accordingly, since the first electrode or the second electrode can be easily deformed, the responsiveness of the array-type capacitive sensor can be improved. In addition, crosstalk can be further reduced.
- the array-type capacitive sensor of the present invention is the above-described array-type capacitive sensor, the surface of the first substrate opposite to the second substrate side, or It is preferable that a stabilizing member having a groove portion whose projection area onto the substrate slit portion coincides with the surface of the second substrate opposite to the first substrate side.
- the stability member having the groove portion in the same direction is provided in the substrate slit portion, the first substrate or the second substrate is not deformed at the time of pressure measurement. It becomes easy. Therefore, the first electrode or the second electrode can be easily deformed, so that the responsiveness of the array type capacitive sensor can be improved. sand That is, more accurate and stable pressure measurement is possible, and crosstalk can be further reduced. Furthermore, since the planarity of the first electrode or the second electrode forming the capacitive element can be maintained, the first electrode and the second electrode are parallel, and the sensor characteristics at the time of bending are reduced. Variations can be reduced.
- the array-type capacitive sensor of the present invention is the above-described array-type capacitive sensor, wherein the substrate slit portion is provided with the first substrate or the second substrate. Is preferably flexible.
- the first substrate or the second substrate provided with the substrate slit portion has flexibility, the first substrate or the second substrate at the time of measuring pressure is used.
- the deformation of the second substrate is further facilitated. Therefore, since the first electrode or the second electrode can be further easily deformed, the responsiveness of the array type capacitive sensor can be further improved. That is, more accurate and stable pressure measurement is possible, and crosstalk can be further reduced.
- the spacer has flexibility.
- the spacer since the spacer has flexibility, the deformation of the first substrate or the second substrate during pressure measurement is further facilitated. Therefore, the first electrode or the second electrode can be more easily deformed, and the responsiveness of the array type capacitive sensor can be further improved. That is, more accurate and stable pressure measurement can be performed, and crosstalk can be further reduced.
- FIG. 1 is an exploded perspective view of an array-type capacitive sensor according to Embodiment 1 of the present invention.
- FIG. 2 is a partial cross-sectional view of the array-type capacitive sensor according to the first embodiment as seen in the aa direction force.
- FIG. 3 is a diagram showing a movable electrode side substrate in the array-type capacitive sensor of Embodiment 1, (a) shows a plane when the movable electrode side substrate is viewed from the movable electrode side, and (b) shows (A) shows an enlarged view of the part, and (c) shows a plane when the movable electrode side substrate is viewed from the detection surface side (back surface).
- FIG. 4 is a diagram showing a movable electrode side substrate in the array-type capacitive sensor of Embodiment 1, wherein (a) shows a plane when the fixed electrode side substrate is viewed from the fixed electrode side, and (b) shows (a) is an enlarged view of the portion, and (c) is a plan view of the fixed electrode side substrate as viewed from the back side (back surface) where the fixed electrode is provided.
- FIG. 5 is a plan view of the spacer in the array-type capacitive sensor according to the first embodiment as viewed from above.
- FIG. 6 is a diagram schematically showing the movable electrode side substrate when the array-type capacitive sensor of Embodiment 1 is attached to the body surface (wrist) of a subject.
- FIG. 7 (a)] is an exploded perspective view schematically showing a capacitive element in a conventional array-type capacitive sensor.
- FIG. 7 (b) is a cross-sectional view schematically showing a capacitive element when a conventional array-type capacitive sensor is mounted on the detection surface.
- FIG. 8 (a)] is an exploded perspective view schematically showing a capacitive element in the array-type capacitive sensor of the first embodiment.
- ⁇ 8 (b)] is a cross-sectional view schematically showing a capacitive element when the array-type capacitive sensor of Embodiment 1 is mounted on the detection surface.
- FIG. 9 (a) is a graph showing the relationship between pressure and capacitance in a conventional array-type capacitive sensor.
- FIG. 9B is a graph showing the relationship between pressure and capacitance in the array-type capacitive sensor of Embodiment 1 in which slits are provided on the movable electrode side substrate.
- FIG. 10 is a cross-sectional view schematically showing a capacitive element when a conventional array-type capacitive sensor is mounted on the detection surface, and (a) and (b) show the array-type electrostatic sensor. The transition of deformation of the movable electrode when pressure is applied to the capacitive sensor is shown.
- FIG. 2 is a cross-sectional view schematically showing a capacitive element, and (a) and (b) show deformation of the movable electrode when pressure is applied to the array-type capacitive sensor of the first embodiment. It shows a transition.
- FIG. 12 is a graph showing the result of crosstalk in a conventional array-type capacitive sensor.
- FIG. 13 is a graph showing the result of crosstalk in the array-type capacitive sensor of the first embodiment.
- FIG. 14 is a diagram showing a schematic configuration of the array-type capacitive sensor of Embodiment 1, wherein (a) extends the slits in the array-type capacitive sensor to connect both ends of the movable electrode side substrate. (B) shows the cross-section when conductive adhesive is used for the spacer in the array-type capacitive sensor! / Speak.
- FIG. 16 is a diagram showing a schematic configuration of the spacer in the embodiment 2, (a) shows a plane of the schematic configuration of the spacer, and (b) is a perspective view of the schematic configuration of the spacer. Is shown.
- FIG. 17 is an exploded perspective view of an array-type capacitive sensor according to Embodiment 3 of the present invention.
- FIG. 18 is a diagram showing a schematic configuration of the array-type capacitive sensor according to Embodiment 3, wherein (a) shows a plan view of the movable electrode side substrate of the array-type capacitive sensor viewed from above. (B) shows the plane of the fixed electrode side substrate of the array type capacitive sensor as viewed from below, (c) shows the aa cross section of the array type capacitive sensor shown in (a). And
- FIG. 19 is a diagram showing a schematic configuration of the stabilizing member in Embodiment 3, (a) shows a perspective view of the schematic configuration of the stabilizing member, and (b) shows the stabilizing member shown in (a). The side as viewed in the Y direction is shown.
- FIG. 20 is a diagram showing a process of attaching the stable metal member to the fixed electrode side substrate in the third embodiment.
- FIG. 21 An exploded perspective view of an array-type capacitive sensor according to Embodiment 4 of the present invention.
- FIG. 22 is a partial cross-sectional view of the array-type capacitive sensor in the fourth embodiment as viewed from the aa direction.
- FIG. 23 is a diagram showing a schematic configuration of members constituting the array-type capacitive sensor according to Embodiment 4, wherein (a) shows a plane of the gap stabilizing member, and (b) shows an adhesive sheet. The plane is shown, and (c) shows the plane of the spacer.
- FIG. 24 is a view showing a schematic configuration of the gap stabilizing member of Embodiment 4 before being incorporated into an adhesive sheet.
- FIG. 25 is a diagram showing a spacer assembly process according to the fourth embodiment.
- FIG. 26 is an external perspective view of a pressure detection unit of a conventional capacitive pressure sensor.
- FIG. 27 is an exploded perspective view of a pressure detection unit of the capacitance type pressure sensor shown in FIG. 26. [28 (a)] FIG. 27 is a plan view of the pressure detection unit shown in FIG. 26 when the upward force is also viewed.
- FIG. 28 (b) is a schematic diagram showing the layout of the capacitive element in the capacitive pressure sensor shown in FIG.
- FIG. 29 is a circuit configuration diagram of a capacitance type pressure sensor including the pressure detection unit shown in FIG.
- FIG. 30 is a schematic configuration diagram of a conventional surface pressure distribution sensor.
- FIG. 31 is a schematic configuration diagram of a conventional pressure pulse wave sensor.
- FIG. 32 is a side view of the capacitance type pressure sensor shown in FIG. 26, (a) shows the side surface of the pressure sensor in a normal state (when flat), and (b) shows the pressure sensor when bent. Show the side of Explanation of symbols
- An array-type capacitive sensor can be applied to various fields as a sensor that detects a physical quantity by a change in capacitance.
- a waveform of an intra-arterial pressure in a living body is used.
- the case of measuring is described as an example.
- the array-type capacitive sensor can measure a pressure fluctuation waveform of the intra-arterial pressure by, for example, pressing against the body surface of a living body.
- a fixed electrode side substrate having three rows of fixed electrodes arranged in parallel to each other so as to extend linearly in a direction substantially perpendicular to the current direction; and the fixed electrode disposed at a predetermined distance from the fixed electrode.
- the movable electrode side substrate having 24 columns of movable electrodes arranged in parallel with each other so as to extend in a direction crossing the extending direction of the electrodes, and the intersection of the three rows of fixed electrodes and the 24 columns of movable electrodes.
- the 24 rows of movable electrodes are provided with slits between them, and are configured to be deformed independently with respect to the pressure applied to the movable electrode side substrate.
- an array-type capacitive sensor used for measuring a waveform of an intra-arterial pressure pressure is applied by an upward force air bag or the like in order to press against the body surface of the living body.
- the arterial pressure can be measured by bringing the movable electrode side substrate into close contact with the shape (unevenness) of the measurement site of the subject and detecting the capacitance of the capacitance element. it can.
- FIG. 1 is an exploded perspective view of the array-type capacitive sensor according to Embodiment 1 of the present invention
- FIG. 2 is a partial cross-sectional view of the array-type capacitive sensor viewed from the aa direction. is there.
- the array-type capacitive sensor 1 includes a movable electrode side substrate 2, a spacer 3, a dielectric film 4, and a fixed electrode side substrate 5.
- the movable electrode side substrate (first substrate, second substrate) 2 contacts the detection surface (here, the body surface of the living body) and receives the intra-arterial pressure to be measured.
- a flexible sheet-like movable electrode (first electrode, second electrode) 6 is provided, and connector connecting portions 2a are provided at both ends of the movable electrode 6. Yes.
- the movable electrode side substrate 2 is made of, for example, an insulating glass-epoxy substrate, a polyimide film, a PET film, an epoxy resin film, or the like. Details of the movable electrode side substrate 2 and the movable electrode 6 will be described later.
- a fixed electrode side substrate (first substrate, second substrate) 5 is disposed on the opposite side of the movable electrode side substrate 2 from the detection surface, and is opposed to the movable electrode side substrate 2, so that the fixed electrode ( A first electrode, a second electrode) 7, and a connector connection portion 5 a is provided at an end of the fixed electrode 7.
- the fixed electrode side substrate 5 is composed of, for example, an insulating glass-epoxy substrate, polyimide film, PET film, epoxy resin film, and the like, similar to the movable electrode side substrate 2. Details of the fixed electrode side substrate 5 and the fixed electrode 7 will be described later.
- the spacer 3 is made of silicon rubber or the like, and is arranged so as to ensure a predetermined distance (gap) between the movable electrode side substrate 2 and the fixed electrode side substrate 5.
- a predetermined distance space between the movable electrode side substrate 2 and the fixed electrode side substrate 5.
- the size of the gap is arbitrarily set according to the width of the physical quantity to be detected by the array type capacitive sensor 1 and the amount of deformation of the movable electrode side substrate 2. Details of the spacer 3 will be described later.
- the dielectric film 4 prevents a short circuit due to contact between the movable electrode 6 of the movable electrode side substrate 2 and the fixed electrode 7 of the fixed electrode side substrate 5, and increases the capacitance.
- the dielectric film 4 is preferably made of an epoxy film having a thickness of 20 m, for example.
- FIG. 3 is a diagram showing a movable electrode side substrate in the array-type capacitive sensor according to the first embodiment, and (a) shows a plan view of the movable electrode side substrate viewed from the movable electrode side. (B) shows a partial enlargement of (a), and (c) shows a plane when the movable electrode side substrate is viewed from the detection surface side (back surface).
- the extending direction of the plurality of strip electrodes forming the movable electrode 6 is defined as the Y direction
- the direction perpendicular to the Y direction and parallel to the two surfaces of the movable electrode side substrate is defined as the X direction.
- the movable electrode 6 is composed of strip-like electrodes extending in a straight line of 24 rows in the Y direction, and arranged so as to be parallel to each other at equal intervals.
- the movable electrode 6 may be at least two or more rows, which is not limited to the force used as a 24 row strip electrode.
- the movable electrode 6 is formed on the movable electrode side substrate 2 by a copper foil or the like by using a sputtering method or a vapor deposition method, and the movable electrode side substrate 2 is formed according to the pressure received from the detection surface.
- the structure can be deformed along with the deformation.
- Each strip electrode has two connector connection parts 2a for 12ch at its end! It ’s connected to somewhere.
- the movable electrode side substrate 2 has a plurality of slits (corresponding to the gaps between the 24 rows of linearly extending electrodes, Substrate slit portion) 2 b is provided in parallel in a straight line.
- each of the strip electrodes constituting the movable electrode 6 can be deformed independently of the adjacent strip electrodes.
- FIG. 4 is a diagram showing a movable electrode side substrate in the array-type capacitive sensor according to the first embodiment, and (a) shows a plan view of the fixed electrode side substrate viewed from the fixed electrode side. (B) shows a partial enlargement of (a), and (c) shows a plane in which the fixed electrode side substrate is provided with a fixed electrode and the side (back surface) force is viewed.
- the fixed electrode 7 is composed of strip-like electrodes extending linearly in three rows in the X direction, and is arranged so as to be parallel to each other at equal intervals. ing.
- the fixed electrode 7 is a force that is a three-row strip electrode. Then, it is sufficient if there are at least two rows.
- the fixed electrode 7 is formed on the fixed electrode side substrate 5 by a copper foil or the like using a sputtering method or a vapor deposition method, and is configured not to be affected by the pressure applied to the detection surface force.
- Each strip electrode is connected to the connector connecting portion 5a for 3ch at its end.
- FIG. 5 is a plan view of the spacer 3 when the upward force is also viewed.
- the spacer 3 is disposed between the movable electrode side substrate 2 and the fixed electrode side substrate 5 so as to keep the distance between them constant.
- the spacer 3 is provided with three rows of openings (spacer openings) 3a in a straight line in the X direction according to the arrangement of the fixed electrodes 7 so as not to cover the fixed electrodes 7.
- the movable electrode-side substrate 2 having the movable electrode 6 and the fixed electrode-side substrate 5 having the fixed electrode 7 are seen from above as respective strip electrodes, that is, strips of 24 rows of strip electrodes. The poles and the three rows of strip electrodes are stacked so that they intersect.
- the spacer 3 is disposed between the movable electrode side substrate 2 and the fixed electrode side substrate 5 so that the opening 3a of the spacer 3 and the fixed electrode 7 of the fixed electrode side substrate 5 are matched. Be placed.
- a dielectric sheet is disposed between the movable electrode side substrate 2 and the fixed electrode side substrate 5.
- the movable electrode 6 and the fixed electrode 7 are formed at the intersection of the movable electrode 6 and the fixed electrode 7 arranged in a matrix.
- a space 3 is formed by maintaining a predetermined distance (for example, about 100 m) by a spacer 3 that also has a silicon rubber equal force.
- a part of the movable electrode 6 and a part of the fixed electrode 7 are arranged to face each other with a space region interposed therebetween, and a capacitive element as a sensor element is formed at this intersection. Is done.
- a total of 72 capacitive elements are formed by 3 rows ⁇ 24 columns of electrodes.
- Figure 6 shows the array-type capacitive sensor 1 worn on the subject's body surface (eg wrist)
- the movable electrode side substrate 2 is schematically shown.
- the array-type capacitive sensor 1 is configured so that the longitudinal direction of the linear slit 2b of the movable electrode side substrate 2 and the extending direction of the artery 100 of the subject substantially coincide.
- the surface of the movable electrode side substrate 2 opposite to the surface on which the movable electrode 6 is provided is pressed against the wrist for attachment.
- a pressing force is applied from above the fixed electrode side substrate 5 for bringing the movable electrode side substrate 2 into close contact with the wrist by an air bag la (see FIG. 7B). Since the movable electrode side substrate 2 is pressed and attached to the detection surface (wrist) lb (see FIG. 7 (b)), the movable electrode side substrate 2 and the movable electrode 6 follow the shape of the wrist. Will be transformed.
- the movable electrode side substrate 2 is provided with the slits 2b in parallel with the strip electrodes constituting the movable electrode 6, the compressive stress and pulling force are applied to the respective strip electrodes due to deformation at the time of mounting as in the prior art. Tension stress does not work.
- the movable electrode 6 forming the capacitive element is deformed to the fixed electrode 7 side by receiving the intra-arterial pressure from the wrist. Then, when the movable electrode 6 is deformed, the distance between the movable electrode 6 and the fixed electrode 7 is changed, and the capacitance (the amount of electricity to be charged) is changed. By converting the changed capacitance into a voltage, the pressure applied to the movable electrode side substrate 2 can be detected.
- the longitudinal direction of the linear slit 2b of the movable electrode side substrate 2 and the extending direction of the artery 100 of the subject substantially coincide.
- the strip-shaped electrodes constituting the movable electrode 6 are independently deformed along the shape of the detection surface lb. Therefore, the plurality of capacitive elements formed in the array-type capacitive sensor 1 do not affect each other by deformation. This point will be described in more detail with reference to FIG. 7 and FIG.
- FIG. 7 is a diagram schematically showing a capacitive element
- Fig. 7 (a) is an exploded perspective view schematically showing the capacitive element in a conventional array-type capacitive sensor
- FIG. 7 (b) is a transverse cross-sectional view schematically showing the capacitive element when the conventional array type capacitive sensor is mounted on the detection surface lb
- FIG. 8 (a) is an exploded perspective view schematically showing a capacitive element in the array-type capacitive sensor 1 of the present embodiment
- FIG. FIG. 3 is a cross-sectional view schematically showing a capacitive element when the array type capacitive sensor 1 of the embodiment is mounted on the detection surface lb.
- FIGS. 8 (a) show the movable electrodes 6a and 6b adjacent to the extending direction of the artery (arrow X direction in the figure) and the direction orthogonal to the X direction (arrow Y direction in the figure). Adjacent movable electrodes 6a and 6c are shown. Capacitance elements (not shown) corresponding to the movable electrodes 6a, 6b, and 6c are represented as capacitance elements a, b, and c, respectively.
- each strip electrode has one continuous movable electrode side substrate. Since it is arranged in 2, the plurality of strip electrodes are deformed along the uneven part of the detection surface (wrist) lb. Specifically, as shown in FIG. 7 (b), in the capacitive element a in contact with the concave portion of the wrist, a tensile stress acts on the movable electrode 6a by the movable electrode 6c adjacent to the movable electrode 6a. Further, compressive stress acts on the fixed electrode 7a.
- the distance between the movable electrode 6a and the fixed electrode 7a is reduced, so that the capacitance of the capacitive element a fluctuates, so that the array-type capacitive sensor 1 is not worn on the wrist, or in a normal state or a flat surface Compared to time, the initial output increases.
- the change in the capacitance with respect to the pressure (pulse pressure) from the detection surface (wrist) lb becomes small, that is, the response of the capacitance element a is poor. Therefore, the sensitivity of the array type capacitive sensor 1 is deteriorated.
- the capacitive element a that receives the pulse pressure is affected by the adjacent capacitive element c, so that accurate and stable pressure measurement cannot be performed.
- a linear slit 2b is provided between the strip electrodes on the movable electrode side substrate 2, and the longitudinal direction of the slit 2b and the subject Since the array-type capacitive sensor 1 is attached to the wrist of the subject so that the extending direction of the artery (the direction of the arrow X in the figure) substantially matches, the plurality of movable electrodes 6 are placed on the uneven portion of the wrist. Transform independently along. Specifically, as shown in FIG. 8 (b), in the capacitive element a pressed by the air bag la, the movable electrode 6a is separated from the adjacent movable electrode 6c in an independent state. is doing.
- the tensile stress due to the movable electrode 6c does not act on the movable electrode 6a. Therefore, if the array-type capacitive sensor 1 is mounted on an uneven surface, Even in this case, the relationship between the capacitive elements a and c is the same environment as that of the planar mounting state, that is, the same relationship as that of the capacitive elements a and b. In other words, even if the array-type capacitive sensor 1 is mounted on an uneven surface such as a bent part or a curved part, only the apparent deformation occurs, and the capacitive elements a to c This is the same as when sensor 1 is not mounted on the uneven surface. Therefore, the initial output does not increase as in the conventional case, and accurate and stable pressure measurement is possible.
- the adjacent capacitive elements a and c are not affected by the deformation of the movable electrode side substrate 2 and the movable electrode 6. Therefore, crosstalk can be reduced as compared with the conventional array type capacitive sensor.
- the extending direction of the movable electrode 6 and the extending direction of the slit 2b substantially match the extending direction of the subject's artery. It is configured to be installed as is. That is, the slit 2b is provided in a direction substantially orthogonal to the bending direction of the movable electrode side substrate 2 when the array type capacitive sensor 1 is mounted.
- the bending direction is a direction that is bent when the array-type capacitive sensor 1 is attached to the wrist of the subject, and is a direction that is substantially orthogonal to the extending direction of the artery.
- the array-type capacitive sensor 1 is not limited to the above-described configuration.
- the extending direction of the movable electrode 6 and the extending direction of the slit 2b and the extending direction of the subject's artery As a configuration to be mounted in a direction that is almost orthogonal to the direction. Even in this configuration, since the slit 2b is interposed between the movable electrode 6a and the movable electrode 6c, the movable electrode 6a and the movable electrode 6c are not affected by deformation. Therefore, an increase in initial output does not occur unlike the conventional case, and accurate and stable pressure measurement is possible.
- the array-type capacitive sensor 1 in the present embodiment has a configuration in which a plurality of capacitive elements can be independently deformed.
- a slit 2b is provided on the movable electrode 6 side between two adjacent capacitance elements, and The spacer 3 is preferably provided.
- Fig. 9 (a) is a graph showing the relationship between pressure and capacitance in a conventional array-type capacitive sensor
- Fig. 9 (b) shows a slit 2b provided on the movable electrode side substrate 2.
- 5 is a graph showing the relationship between pressure and capacitance in the array-type capacitive sensor 1 of the present embodiment.
- the dotted line indicates the measurement result when the array-type capacitive sensor 1 is mounted in a plane (when in a plane), and the solid line indicates the array-type electrostatic capacitance.
- the measurement results when the capacitive sensor 1 is attached to the R10 jig (when bent) are shown.
- each array-type capacitive sensor 1 used in this experiment satisfies the following design conditions. That is, the movable electrode side substrate 2 has a thickness of 125 m, 24 movable electrodes 6 having a width of 0.8 mm and a length of 22 mm arranged at an lmm pitch.
- the fixed electrode side substrate 5 has a thickness of 125 m, and is formed by arranging three fixed electrodes 7 having a width of 2 mm and a length of 25 mm at a pitch of 10 mm.
- Spacer 3 is made of a polyester film having a thickness of 100 ⁇ m
- dielectric film 4 is made of an epoxy film having a thickness of 20 ⁇ m.
- the difference between the conventional array type capacitive sensor and the array type capacitive sensor 1 of the present embodiment is that the width of the movable electrode side substrate 2 in the array type capacitive sensor 1 of the present embodiment is different. 0. There are 25 2mm slits 2b at lmm pitch!
- the initial output differs between flat and bent, especially when bent! I was able to confirm.
- compressive stress and tensile stress are applied to the movable electrode 6 and the fixed electrode 7, and pressure is applied to the capacitive element. This is because the state is added.
- the array capacitive sensor 1 of the present embodiment As shown in FIG. 9 (b), it is confirmed that there is no difference in the initial output between when flat and when bent. did it. In addition, it was confirmed from the slope of the straight line when flat and bent that the increasing tendency of the capacitance when flat and bent is almost the same as the applied pressure increases. In other words, the array-type capacitive sensor 1 of the present embodiment has a component that the measurement result does not vary depending on the shape of the measurement object. Therefore, the array-type capacitive sensor 1 of the present embodiment has the same characteristics as when it is not mounted with the array-type capacitive sensor 1 even when mounted on an uneven member or the like. However, it was divided. That is, it was confirmed that even when the movable electrode 6 was deformed by being attached to an uneven member or the like, it was possible to perform highly accurate and stable pressure measurement.
- FIG. 10 is a cross-sectional view schematically showing a capacitive element when a conventional array-type capacitive sensor is mounted on the detection surface.
- A) and (b) show the array-type capacitive sensor.
- FIG. 12 is a diagram showing a transition of deformation of the movable electrode 6 when a pressure is applied to the capacitive sensor, and FIG. 12 is a graph showing a result of a change in electrostatic capacitance in the conventional array-type capacitive sensor. It is.
- FIG. 11 shows the array-type capacitance of this embodiment.
- FIG. 2 is a cross-sectional view schematically showing a capacitive element when a quantitative sensor 1 is mounted on a detection surface.
- (A) and (b) are diagrams in which pressure is applied to the array capacitive sensor 1 described above.
- FIG. 13 is a graph showing the results of changes in capacitance in the array-type capacitive sensor 1.
- the array-type capacitive sensor 1 of the present embodiment when the pressure is applied, the movable electrode side substrate 2 is provided with the slit 2b. Can change. Therefore, as shown in FIGS. 11A and 11B, only the movable electrode 6 positioned on the fluctuating detection surface lb fluctuates. As is apparent from the graph shown in FIG. 13, it was confirmed that the effect of the pressure applied to the specific capacitance element (Och) did not reach the other capacitance elements. Similar results were obtained with other capacitive elements other than Och. As described above, it was confirmed that the array type capacitive sensor 1 of this embodiment can reduce crosstalk as compared with the conventional array type capacitive sensor.
- slits 2b are provided in the movable electrode side substrate 2 along the 24 rows of strip-like movable electrodes 6, and the movable electrode side
- the force at which both ends of the substrate 2 are integrally formed As another configuration, for example, as shown in FIG. 14 (a), the both ends of the movable electrode side substrate 2 are separated by extending the slit 2b. As a shape. As a result, a movable electrode side substrate 2 having 24 independent movable electrodes 6 is formed. Become. According to this configuration, the effect of the slit 2b described above can be improved. In other words, since the flexibility of the movable electrode 6 is improved, more accurate pressure measurement is possible.
- Embodiment 2 of the present invention with reference to FIGS. 15 and 16.
- members having the same functions as those shown in the first embodiment are given the same reference numerals and explanation thereof is omitted.
- FIG. 15 is an exploded perspective view of array-type capacitive sensor 20 according to Embodiment 2 of the present invention.
- the array type capacitive sensor 20 in the present embodiment is an improvement of the spacer 3 of the array type capacitive sensor 1 in the first embodiment.
- FIG. 16 is a diagram showing a schematic configuration of the spacer 3 in the present embodiment, (a) shows a plane of the schematic configuration of the spacer 3, and (b) shows the spacer 3.
- 3 shows a perspective view of the schematic configuration of FIG.
- the spacer 3 has three rows of fixed electrode 7-minute openings so that the fixed electrode 7 disposed on the fixed electrode side substrate 5 is not covered when laminated and bonded together.
- 3a is provided, and a slit (spacer slit portion) 3b is provided at the same position as the slit 2b provided on the movable electrode side substrate 2.
- the movable electrode 6 when the array-type capacitive sensor 20 is attached to the concavo-convex member, the movable electrode 6 can be more easily deformed along the concavo-convex surface than in the case of the first embodiment. become. Also in this case, since the movable electrode 6 can be deformed independently of the other movable electrodes 6, compressive stress and tensile stress do not act on the capacitive element corresponding to the deformed portion. Therefore, according to the array-type capacitive sensor 20 in the present embodiment, the flexibility of the movable electrode 6 is further improved as compared with the array-type capacitive sensor 1 in the first embodiment, so that the pressure Fluctuations can be measured more accurately, and crosstalk can be further reduced. [0083] As in the first embodiment, when the slit 2b of the movable electrode side substrate 2 is extended and separated to completely separate the strip-shaped movable electrode 6, the above-described effects are obtained. It can be further improved.
- Embodiment 3 of the present invention with reference to FIGS. 17 to 19.
- members having the same functions as those shown in Embodiments 1 and 2 are given the same reference numerals, and explanation thereof is omitted.
- FIG. 17 is an exploded perspective view of array-type capacitive sensor 30 according to the third embodiment of the present invention.
- FIG. 18 is a diagram showing a schematic configuration of the array-type capacitive sensor 30 according to the present embodiment.
- FIG. 18A is a plan view of the movable electrode side substrate 2 of the array-type capacitive sensor 30 as viewed from above.
- (B) shows the plane of the fixed electrode side substrate 5 of the array-type capacitive sensor 30 as viewed from below, and
- (c) shows the a of the array-type capacitive sensor 30 shown in (a).
- the array-type capacitive sensor 30 in the present embodiment has a configuration in which the array-type capacitive sensor 20 in the second embodiment is further provided with a stable member 8.
- FIG. 19 is a diagram showing a schematic configuration of the stabilizing rod member 8 in the present embodiment, (a) is a perspective view of the schematic configuration of the stabilizing member 8, and (b) is a diagram (a).
- the side surface of the stable steel member 8 shown in the Y direction is shown.
- the stabilizing member 8 includes a plurality of grooves.
- the stabilizing member 8 includes a single thin film plate (e.g., an adhesive sheet) 8a and a plurality of protruding plates 8b extending in parallel at equal intervals linearly on the thin film plate 8a. It consists of In FIGS.
- the number of protruding plates 8b is the number of movable electrodes 6 on the movable electrode side substrate 2. Is preferably the same as the number of (here, 24). Further, it is preferable that the gap between adjacent protruding plates 8b, that is, the width of the groove portion 8c, is set to such an extent that the protruding plates 8b do not buffer when the stability member 8 is deformed. Further, it is preferable that the width of the protruding plate 8b in the short direction is substantially the same as the width of the movable electrode 6 in the short direction.
- the array-type capacitive sensor 30 when the array-type capacitive sensor 30 is mounted on the concavo-convex member, the movable electrode 6 bends with the both slits 2b ′ 3b and the groove 8c as a boundary. Therefore, it is possible to ensure the flatness of the movable electrode 6 and the fixed electrode 7 that form the capacitive element while maintaining the flexibility of the array type capacitive sensor 30. Therefore, the array-type capacitive sensor 30 in this embodiment measures the pressure fluctuation more accurately than the array-type capacitive sensors 1 and 20 in the first and second embodiments. And crosstalk can be further reduced.
- the slit 2b of the movable electrode side substrate 2 may be extended and separated to completely separate the belt-like movable electrode 6.
- FIG. 20 (a) shows a process of attaching the stabilizing member 8 to the fixed electrode side substrate 5.
- the stability sheet member 8 is brought into close contact with a release sheet composed of the PET film 8d and the release material 8e, and the adhesive sheet 8a is temporarily pressure-bonded to the stability sheet member 8 (FIG. 20 (a)).
- the stable steel member 8 is cut by pressing (knob cutting) ((b) in FIG. 20).
- the adhesive sheet 8e is subjected to thermocompression bonding ((c) in FIG. 20), and then the release sheet is peeled off to complete (FIG. 20 (d)).
- Embodiment 4 of the present invention with reference to FIGS. 21 to 23.
- members having the same functions as those shown in Embodiments 1 to 3 are given the same reference numerals, and explanation thereof is omitted.
- FIG. 21 is an exploded perspective view of the array capacitive sensor 40 according to Embodiment 4 of the present invention.
- FIG. 22 shows the array capacitive sensor 40 from the aa direction.
- FIG. The array type capacitive sensor 40 in the present embodiment is obtained by further improving the spacer 3 of the array type capacitive sensor 20 in the second embodiment.
- FIG. 23 (c) shows a plane of a schematic configuration of the spacer 3 in the present embodiment. same As shown in the figure, the spacer 3 is also in force with the gap stabilizing member 9 and the adhesive sheet 10.
- FIG. 23 (a) shows a schematic configuration plane of the gap stabilizing member 9, and
- FIG. 23 (b) shows a schematic configuration plane of the adhesive sheet 10.
- the gap stabilizing member 9 has the same flexibility as the movable electrode side substrate 2 and the fixed electrode side substrate 5, and has the same compressive strength as the movable electrode side substrate 2 and the fixed electrode side substrate 5.
- the gap stabilizing member 9 is made of, for example, polyimide, PET (film), epoxy resin (film), or the like.
- the adhesive sheet 10 is provided with an opening 3a corresponding to the fixed electrode 7 and a slit 3b corresponding to the slit 2b of the movable electrode 6 in the same manner as the spacer 3 of the second embodiment. Furthermore, as shown in FIG. 23 (b), a plurality of cutout portions 10a are formed to receive the gap stabilizing member 9 and extend in parallel at equal intervals in a straight line.
- the notch 10a is located between a plurality of slits (not shown) in the adhesive sheet 10, and when the movable electrode side substrate 2 and the fixed electrode side substrate 5 are laminated, the movable electrode side substrate Projection positions of the second movable electrode 6 and the notch 10a are formed at positions where they match each other.
- the adhesive sheet 10 also has, for example, polyester resin, epoxy resin, polyurethane resin, silicone resin, and the like.
- FIG. 24 is a view showing a schematic configuration of the gap stabilizing member 9 before being incorporated in the adhesive sheet 10. After processing the gap stabilizing member 9 shown in Fig. 24 to be incorporated into the notch 10a of the adhesive sheet 10 (Fig. 23 (a)), as shown in Fig. 23 (c), the gap stabilizing Combine the saddle member 9 and the adhesive sheet 10.
- FIG. 25 is a diagram showing an assembly process of the spacer 3.
- the gap stabilizing member 9 is brought into close contact with a release sheet composed of the PET film 9a and the release material 9b ((a) in FIG. 25).
- the gap stabilizing member 9 is cut by a presser (nof cut) to form an array (FIG. 25 (b)).
- substrate 2 reduces the adhesive force of a mold release material by thermosetting (FIG.25 (c)), peels off a mold release sheet, and completes (FIG.25 (d)).
- the slit 3b is covered with the spacer 3, and the fixed side substrate is stacked and thermally cured.
- the array type capacitive sensor 40 can be manufactured.
- the gap stabilizing member 9 has the same function as the stabilizing member 8 shown in the third embodiment.
- the same effect as that of the array capacitive sensor 30 in the third embodiment can be obtained. That is, when the array type capacitive sensor 40 is mounted on the concavo-convex member, the movable electrode 6 is deformed (bent) with the gap between the slit 3b and the gap stabilizing member 9 as a boundary. Therefore, it is possible to ensure the flatness of the movable electrode 6 and the fixed electrode 7 forming the capacitive element while maintaining the flexibility of the array type capacitive sensor 40. Therefore, the array-type capacitive sensor 40 in the present embodiment can measure pressure fluctuations more accurately and can further reduce crosstalk.
- the slit-shaped movable electrode 6 may be completely separated by extending the slit 2b of the movable electrode side substrate 2 and separating it.
- the array-type capacitive sensor according to the present invention is provided between the plurality of first electrodes or the plurality of second electrodes on the first substrate or the second substrate. Further, a slit-shaped substrate slit portion extending in parallel with the first electrode or the second electrode is provided.
- the capacitive element corresponding to the deformed portion is not affected by the adjacent substrate and electrode. Therefore, it is possible to provide an array type capacitive sensor that can be manufactured at low cost and can measure pressure accurately and stably even on a bent surface.
- the array-type capacitive sensor of the present invention can measure pressure changes accurately and stably, it can be applied to measurement of minute pressure changes such as measurement of a pressure pulse of a living body.
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Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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EP07743382A EP2023110A4 (en) | 2006-05-24 | 2007-05-15 | NETWORK TYPE CAPACITY SENSOR |
US12/301,596 US7938025B2 (en) | 2006-05-24 | 2007-05-15 | Array type capacitance sensor |
CN2007800184910A CN101449138B (zh) | 2006-05-24 | 2007-05-15 | 阵列型电容式传感器 |
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JP2006144680A JP4143653B2 (ja) | 2006-05-24 | 2006-05-24 | アレイ型静電容量式センサ |
JP2006-144680 | 2006-05-24 |
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PCT/JP2007/059947 WO2007135895A1 (ja) | 2006-05-24 | 2007-05-15 | アレイ型静電容量式センサ |
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US (1) | US7938025B2 (ja) |
EP (1) | EP2023110A4 (ja) |
JP (1) | JP4143653B2 (ja) |
KR (1) | KR101066672B1 (ja) |
CN (1) | CN101449138B (ja) |
TW (1) | TWI338125B (ja) |
WO (1) | WO2007135895A1 (ja) |
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- 2007-05-15 KR KR1020087029009A patent/KR101066672B1/ko not_active IP Right Cessation
- 2007-05-15 US US12/301,596 patent/US7938025B2/en not_active Expired - Fee Related
- 2007-05-15 CN CN2007800184910A patent/CN101449138B/zh not_active Expired - Fee Related
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Cited By (6)
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US20140081160A1 (en) * | 2012-09-20 | 2014-03-20 | Jiannan Xiang | Flexible Multi-point Pulse Sensor |
WO2019054122A1 (ja) * | 2017-09-14 | 2019-03-21 | オムロンヘルスケア株式会社 | 脈波測定用電極ユニットおよび脈波測定装置 |
JP2019051009A (ja) * | 2017-09-14 | 2019-04-04 | オムロンヘルスケア株式会社 | 脈波測定用電極ユニットおよび脈波測定装置 |
US11457828B2 (en) | 2017-09-14 | 2022-10-04 | Omron Corporation | Pulse wave measurement electrode unit and pulse wave measurement device |
CN114076648A (zh) * | 2020-08-12 | 2022-02-22 | 环球水泥股份有限公司 | 力传感装置及拼接装置 |
CN114076648B (zh) * | 2020-08-12 | 2024-04-09 | 环球水泥股份有限公司 | 力传感装置及拼接装置 |
Also Published As
Publication number | Publication date |
---|---|
EP2023110A1 (en) | 2009-02-11 |
CN101449138A (zh) | 2009-06-03 |
KR101066672B1 (ko) | 2011-09-21 |
US20090151478A1 (en) | 2009-06-18 |
CN101449138B (zh) | 2012-04-11 |
US7938025B2 (en) | 2011-05-10 |
TW200811427A (en) | 2008-03-01 |
JP4143653B2 (ja) | 2008-09-03 |
JP2007315876A (ja) | 2007-12-06 |
TWI338125B (en) | 2011-03-01 |
KR20090017546A (ko) | 2009-02-18 |
EP2023110A4 (en) | 2012-10-17 |
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