JP6893895B2 - Tile sensor - Google Patents

Description

The present invention relates to a tile-shaped sensor capable of measuring a walking state of a large area.

Conventionally, a load training support device (pressure distribution sensor) using a pressure measurement sheet for measuring a pressure distribution has been known. The load training support device has a pressure sensor unit (pressure measurement sheet), a region detection unit, and a load calculation unit. The pressure sensor unit measures the pressure distribution generated by the contact of the feet when the subject walks on the pressure sensor unit. The area detection unit cuts out the area where the foot exists based on the pressure distribution measured by the pressure sensor unit. The load calculation unit obtains the load (sole pressure) applied to each part of the sole from the pressure distribution with respect to the area of the foot cut out by the area detection unit.

According to this, the subject can measure the sole pressure during walking simply by walking on the pressure sensor unit without wearing a special device, and can efficiently perform rehabilitation and the like.

By the way, when performing gait analysis, the subject actually walks on the pressure sensor unit. At this time, in order to analyze the walking state, it is necessary to walk a certain distance, and a sufficient area is required for the pressure sensor unit. Therefore, a large pressure sensor unit is required to perform such gait analysis.

For example, the pressure distribution sensor of Patent Document 1 includes a plurality of first electrodes and a plurality of first electrodes that define a plurality of two-dimensionally arranged pressure measurement points whose electrical characteristic values change according to the magnitude of the applied pressure. It contains one or a plurality of second electrodes facing each other, and has n (n: 2 or more natural numbers) pressure measuring sheets arranged along one direction.
Further, for each of the different relative positions on the pressure measurement sheet, n first electrodes belonging to different pressure measurement sheets are defined as n pressure measurement points whose relative positions on the pressure measurement sheet are substantially the same. It also has a connecting means for electrically connecting the n second electrodes to each other.
Further, n pressure measurements that are electrically connected to a plurality of first electrodes and one or a plurality of second electrodes on the n pressure measurement sheets and have the same relative position on the n pressure measurement sheets. It is equipped with an output circuit that outputs an electrical signal corresponding to the total pressure applied to the points.

According to this, since the walkable area can be increased by arranging a plurality of pressure measuring sheets having the same size as the conventional pressure distribution sensor, it can be operated as a large pressure distribution sensor.

Japanese Unexamined Patent Publication No. 2006-284404

However, in the pressure distribution sensor of Patent Document 1, when a plurality of pressure measuring sheets are actually arranged in one direction, it is not easy to install them while aligning the adjacent pressure measuring sheets.

Therefore, an object of the present invention is to provide a tile-shaped sensor capable of easily installing a large-sized pressure distribution sensor in which a plurality of pressure measuring sheets are arranged without aligning the pressure measuring sheets with each other.

Hereinafter, a plurality of aspects will be described as means for solving the problem. These aspects can be arbitrarily combined as needed.

The tile-shaped sensor of the present invention
A pressure measurement module having a rectangular shape having two sides parallel to each of the X-axis direction and the Y-axis direction, a pressure measurement sheet, and a circuit board electrically connected to the pressure measurement sheet.
It is laminated on the pressure measurement module, is made of a rectangular matte material, and has a plurality of convex portions on two sides parallel to the X-axis direction, and a concave portion having a shape in which the convex portion can be fitted between the convex portions. With a joint mat that has a connecting part,
With
The distance L1 between the two sides parallel to the X-axis direction of the pressure measurement module is equal to the distance L2 between the convex portion of the connecting portion on one side of the joint mat and the concave portion of the connecting portion on the other side.

With this configuration, the installation of a large pressure distribution sensor can be easily performed by simply connecting the tile-shaped sensors to each other by engaging the plurality of convex portions and the plurality of concave portions of the joint mat. Further, it is not necessary to align the pressure measurement sheets with each other at that time.

Further, as described above, the distance L1 between the two sides parallel to the X-axis direction of the pressure measurement module is equal to the distance L2 between the convex portion of the connecting portion on one side of the joint mat and the concave portion of the connecting portion on the other side. , When the joint mats are connected, the pressure measurement modules will be adjacent to each other without any gap. At this time, the two sides of the pressure measurement module parallel to the X-axis direction do not have an uneven shape like the two sides parallel to the X-axis direction of the joint mat. Therefore, it is easily possible to set the pressure measurement area as close as possible to the vicinity of the boundary between adjacent pressure measurement modules.
The overlapping width L3 of the pressure measurement module and the joint mat in the Y-axis direction is more preferably 90% or more of the distance L1 from the viewpoint of ease of handling as a tile.

The pressure measurement module is parallel to the Y-axis direction on one surface of a support panel made of a rectangular and rigid material having two sides parallel to each of the X-axis direction and the Y-axis direction. The film-shaped pressure measurement sheet laminated except for the external connection region existing along one side, and the circuit board provided in the external connection region of the support panel.
It may be provided with.
The joint mat is made of a resin having excellent flexibility and elasticity. Therefore, in the pressure measurement module laminated on the pressure measurement module, when the pressure measurement sheet is in the form of a film as described above, a support panel made of a rigid material is interposed between the pressure measurement sheet and the joint mat.
With this configuration, it is possible to prevent the surface of the joint mat from forming a dent in the pressure-applied portion of the film-shaped pressure measuring sheet. This is because if the film-shaped pressure measuring sheet is deformed to form a dent on the surface of the joint mat during pressure measurement, accurate measurement cannot be performed.

Further, regarding the laminated body of the pressure measurement sheet and the support panel, at least the surface on the pressure measurement sheet side, the surface on the support panel side, and the side surfaces of the two sides parallel to the X-axis direction are covered, and each of these surfaces. A protective sheet may be further provided in which the portions covering the above are continuous or joined to each other.
In the tile-shaped sensor of the present invention, after a number of tile-shaped sensors are joined together, the subject walks on the tile-shaped sensor with the shoes or shoes removed, so that it is conceivable that dirt on the shoes and moisture on the feet may be transferred to the pressure measurement sheet. .. Therefore, as the tile-shaped sensor is used repeatedly, these stains and moisture may cause the function of the pressure measurement sheet to deteriorate.
However, if the pressure measurement module is provided with a protective sheet, the pressure measurement sheet can be protected from dirt and moisture.

In addition, by providing a protective sheet, other effects can be obtained.
For example, when the subject takes off his shoes or shoes and walks on the tile-shaped sensor, it is possible to prevent the pressure measurement sheet from being peeled off from the support panel due to the foot being caught on the side surface of the pressure measurement sheet.
Further, when connecting or disassembling the tile-shaped sensor, it is possible to prevent the pressure measurement sheet from being peeled off from the support panel due to something being caught on the side surface of the pressure measurement sheet.

In addition, the pressure measurement sheet is
A first base material and a second base material arranged so as to face the first base material,
A plurality of first band-shaped electrodes formed on the first base material side by side on the second base material side,
A plurality of second band-shaped electrodes formed side by side on the second base material on the first base material side so as to intersect the first band-shaped electrode.
A pressure-sensitive layer formed so as to cover at least one of the first band-shaped electrode and the second band-shaped electrode may be provided.

Further, of the two sides parallel to the Y-axis direction of the pressure measurement sheet, the wiring from the first band-shaped electrode and the second band-shaped electrode is collected on one side on the external connection region side to be the first connection terminal. And equipped with a second connection terminal
From the plurality of first band-shaped electrodes, first wiring is formed as it is from one end on the external connection region side to the first connection terminal.
The second wiring may be formed from the plurality of second band-shaped electrodes via an insulating layer so as to cross the other second band-shaped electrodes existing between the second band-shaped electrodes and the second connection terminals.
With this configuration, there is no wiring on the two sides parallel to the X-axis direction of the pressure measurement sheet, so when multiple tile-shaped sensors are connected, it is even easier to make the pressure measurement area just near the boundary. become.

Further, the pressure measurement sheet is arranged in a dot shape avoiding the intersection (pressure sensitive portion) of the plurality of first band-shaped electrodes and the plurality of second band-shaped electrodes, and the first base material and the second base material are arranged. A plurality of adhesive layers may be further provided.
With such a configuration, since the frame-shaped adhesive layer is eliminated from the peripheral edge of the pressure measuring sheet, when a plurality of tile-shaped sensors are connected, it becomes easier to make the pressure measuring area as close as possible to the vicinity of the boundary.

Further, the dot-shaped adhesive layer may be arranged on a plurality of first band-shaped electrodes and extension lines thereof.
With this configuration, when a plurality of tile-shaped sensors are connected in the Y-axis direction, all the rows composed of the pressure-sensitive portion and the dot-shaped adhesive layer are arranged at equal intervals in the Y-axis direction. Is easy. Therefore, the same measurement result can be obtained in the region near the seam as in the other regions.

Since the tile-shaped sensor of the present invention is configured as described above, it is possible to easily install a pressure distribution sensor in which a plurality of pressure measurement sheets are arranged without aligning the pressure measurement sheets with each other.

The plan view which shows the tile-shaped sensor which concerns on 1st Embodiment of this invention. FIG. 5 is a cross-sectional view showing an AA'line cross section of the tile-shaped sensor of FIG. FIG. 5 is a cross-sectional view showing a BB'line cross section of the tile-shaped sensor of FIG. The rear view of the tile-shaped sensor of FIG. The exploded plan view which shows an example of the pressure measurement sheet used in 1st Embodiment. A partially enlarged cross-sectional view showing an example of a pressure measurement sheet used in the first embodiment. The explanatory view which shows an example of the pressure measurement sheet used in 1st Embodiment. Explanatory drawing which shows the state which the tile-shaped sensor is connected to each other. Explanatory drawing which shows the measurement state of the large pressure distribution sensor which connected the tile-shaped sensor. Explanatory drawing which shows an example of the adhesive layer arrangement of 2nd Embodiment in the state which the tile-shaped sensor is connected to each other.

Hereinafter, embodiments will be described with reference to the drawings. However, the present invention is not limited to the embodiments specifically shown below.

1. 1. First Embodiment FIG. 1 is a plan view showing a tile-shaped sensor according to the first embodiment of the present invention. FIG. 2 is a cross-sectional view showing an AA'line cross section of the tile-shaped sensor of FIG. FIG. 3 is a cross-sectional view showing a BB'line cross section of the tile-shaped sensor of FIG. FIG. 4 is a rear view of the tile-shaped sensor of FIG. In the figure, the broken line indicates a hidden part.

The tile-shaped sensor 1 of the present embodiment includes a pressure measurement module 2 and a joint mat 3. The pressure measurement module 2 is laminated on the joint mat 3.

<Pressure measurement module>
As shown in FIGS. 2 and 3, the pressure measurement module 2 includes a support panel 21, a film-shaped pressure measurement sheet 22, a circuit board 23, a protective sheet 24, and a cover 25.

(Support panel)
The support panel 21 is a rectangular plate made of a rigid material having two sides parallel to each other in the X-axis direction and the Y-axis direction. Since the pressure measurement module 2 is laminated on the joint mat 3, it is a plate for preventing a dent from being formed on the surface of the joint mat 3 at the portion where the pressure of the pressure measurement sheet 22 is applied. This is because if the pressure measuring sheet 22 is deformed to form a dent on the surface of the joint mat 3 during pressure measurement, accurate measurement cannot be performed.

Examples of the rigid material constituting the support panel 21 include FRP (fiberglass reinforced plastics) such as glass, ceramics, glass epoxy, and glass composite. Of these, glass epoxy is particularly preferable because of its lightness and strength.
The size of the support panel 21 is, for example, 700 mm in the foot width direction (X-axis direction in FIG. 1) and 400 mm in the traveling direction (Y-axis direction in FIG. 1). Further, the thickness of the support panel 21 is appropriately set according to the material thereof. For example, in the case of the support panel 21 using a glass epoxy plate, it is preferably 0.5 to 2 mm.

(Pressure measurement sheet)
The film-shaped pressure measuring sheet 22 is laminated on one surface of the support panel 21 except for the external connection region 21A existing along one side parallel to the Y-axis direction (see FIGS. 1 to 3).
The pressure measurement sheet 22 measures the pressure distribution generated by the contact of the feet when the subject 50 walks on the pressure measurement sheet 22.
The size of the pressure measuring sheet 22 is, for example, 600 mm in the foot width direction (X-axis direction in FIG. 1) and 400 mm in the traveling direction (Y-axis direction in FIG. 1). The thickness of the pressure measuring sheet 22 is preferably 0.1 to 0.5 mm, for example.

As the pressure measurement sheet 22, for example, a resistance film type matrix type as shown in FIGS. 5 and 6 can be used. FIG. 5 is an exploded plan view showing an example of the pressure measurement sheet used in the first embodiment. FIG. 6 is a partially enlarged cross-sectional view showing an example of the pressure measurement sheet used in the first embodiment. In the figure, the broken line indicates a hidden part.
The matrix type pressure measurement sheet 22 is on the first base material 221 and the second base material 222 arranged to face the first base material 221 and the second base material 222 on the first base material 221. On the side, a plurality of first band-shaped electrodes 221a extending parallel to the X-axis direction and arranged side by side in the Y-axis direction, and on the second base material 222 and on the first base material 221 side, the first A plurality of second band-shaped electrodes 222a formed side by side so as to intersect the one band-shaped electrode 221a, and at least one of the first band-shaped electrode 221a and the second band-shaped electrode 222a (second band-shaped electrode 222a in the present embodiment). , A pressure-sensitive layer 223 formed so as to cover each of the above.

The first base material 221 and the second base material 222 are made of an insulating material such as PET, PEN or polyimide, and have a thickness of any value in the range of 25 μm to 150 μm.

The first band-shaped electrode 221a and the second band-shaped electrode 222a are made of a metal material such as gold, silver, or copper, and have a thickness of any value in the range of 5 μm to 15 μm. The first band-shaped electrode 221a and the second band-shaped electrode 222a are not limited to gold, silver, or copper, and may be made of any material as long as they can be easily energized.

The pressure-sensitive layer 223 contains conductive particles and a resin, and its electric resistance value changes depending on the applied pressure. The pressure-sensitive layer 223 is adjusted so that the conductive particles are contained in an amount of 5 parts by weight to 30 parts by weight with respect to 100 parts by weight of the resin.
Examples of the above-mentioned conductive particles include carbon black particles, metal particles such as gold, silver, and copper, alloy particles, and particles made of a resin whose surface is coated with a metal or alloy, and the particles are conductive. Any particle may be used.
Further, examples of the above-mentioned resin include phenoxy resin, epoxy resin, polyurethane resin and the like.

Here, when a predetermined relatively low pressure is applied from the first base material 221 side, the first band-shaped electrode 221a at the corresponding portion and the pressure-sensitive layer 223 covering the second band-shaped electrode 222a come into contact with each other, and the electrodes come into contact with each other. Energize. This makes it possible to detect where the pressure is applied.
Then, when further pressure is applied, the conductive particles contained in the pressure sensitive layer 223 are more in contact with each other, and the electric resistance value further changes. This makes it possible to sense how much pressure is being applied.

The pressure measurement sheet 22 is adjacent to the external connection region 21 existing along one side parallel to the Y-axis direction of the support panel 21 in a state of being laminated on the support panel 21. Therefore, of the two sides parallel to the Y-axis direction of the pressure measurement sheet 22, the wiring from the first band-shaped electrode 221a and the second band-shaped electrode 222a is collected on one side on the external connection region 21 side, and the first connection terminal. The 221c and the second connection terminal 222c are formed.
At this time, from the plurality of first band-shaped electrodes 221a extending parallel to the X-axis direction and formed side by side in the Y-axis direction, the first wiring is directly provided from one end of the external connection region 21A to the first connection terminal 221c. 221b are formed respectively. On the other hand, the plurality of second band-shaped electrodes 222a formed side by side so as to intersect the first band-shaped electrode 221a cross another second band-shaped electrode 222a existing between the second connection terminal 222c and the second band-shaped electrode 222a. It is preferable that the second wiring 222b is formed in each of the above.
With this configuration, there is no wiring on the two sides parallel to the X-axis direction of the pressure measurement sheet 22, so when a plurality of tile-shaped sensors 1 are connected, the pressure measurement area can be set to the very limit near the boundary. It will be easier.
The second wiring 222b may be formed so as to be superimposed on another second band-shaped electrode 222a via an insulating film (not shown), or the other second band-shaped electrode 222a and the second wiring 222a as shown in FIG. It may be formed between the base material 222 and the base material 222.

The wiring 221b, the wiring 222b, and the connection terminals 221c, 222c are made of a metal material such as gold, silver, or copper, and have a thickness of any value in the range of 5 μm to 15 μm. The wiring 221b, the wiring 222b, and the connection terminals 221c, 222c are not limited to gold, silver, or copper, and may be made of any material as long as they can be easily energized.

The insulating film (not shown) is made of an insulating resin containing a phenoxy resin, an epoxy resin, a polyurethane resin, or the like, and has a thickness of any value in the range of 1 μm to 30 μm.

By the way, as shown in FIG. 7, the first base material 221 having the first band-shaped electrode 221a and the second base material 22 having the second band-shaped electrode 222a and the pressure-sensitive layer 223 have a plurality of first band-shaped electrodes 221a. It is preferable that the electrodes are bonded by a plurality of adhesive layers 224 arranged in a dot shape while avoiding the intersection (pressure sensitive portion 225) between the and the plurality of second band-shaped electrodes 222a.
With this configuration, the frame-shaped adhesive layer disappears from the peripheral edge of the pressure measuring sheet 22, so that when a plurality of tile-shaped sensors 1 are connected, it is easier to set the pressure measuring area to the very limit near the boundary. Become.

The dot-shaped adhesive layer 224 is made of, for example, an aqueous pressure-sensitive adhesive, and even if it is formed directly on the first base material 221 or the second base material 222, it can be formed on the first band-shaped electrode 221a or the pressure-sensitive layer. It may be formed on 223 (see FIG. 7), or may be further formed by mixing the same.
Examples of the method for forming the adhesive layer 224 include printing and coating with a dispenser.
It is preferable to avoid forming the first band-shaped electrode 221a and the second band-shaped electrode 222a at the intersection.
Further, the dot-shaped adhesive layer 224 may be uniformly provided on the entire pressure measuring sheet 22 as shown in FIG. 7, or may be provided irregularly. Further, the pressure measuring sheet 22 may be provided not only on the entire peripheral portion or the four corners of the pressure measuring sheet 22, but it is more preferable to provide the pressure measuring sheet 22 on the entire surface from the viewpoint of adhesive strength.

(Circuit board)
The circuit board 23 is provided in the external connection region 21A of the support panel 21 and is electrically connected to the pressure measurement sheet 22 via the FPC 26 (see FIGS. 2 and 8).
The circuit board 23 provided in two units of the pressure measurement module is formed at each intersection (pressure sensitive portion 225) (pressure sensitive portion 225) of the plurality of first band-shaped electrodes 221a and the plurality of second band-shaped electrodes 222a of the pressure measurement sheet 22. The contact resistance is measured, the state of the pressure applied to the pressure sensitive surface is measured, and the information is transmitted to the output circuit 41.

(Protective sheet)
The protective sheet 24 covers the three sides of the laminated body of the pressure measuring sheet 22 and the support panel 21 except for the surface on the pressure measuring sheet 22 side, the surface on the support panel 22 side, and one side on the external connection area 21A side. , The portions covering each of these surfaces are continuous or joined.
In the present embodiment, for example, as shown in FIGS. 2 and 3, the protective sheet 24 is attached to the pressure measuring sheet 24 on two sides parallel to the X-axis direction with respect to the laminated body of the pressure measuring sheet 22 and the support panel 21. It is continuously folded from the surface on the 22 side to the surface on the support panel 22 side, and both ends are joined on the surface on the support panel 22 side, and the remaining side surfaces of the laminate are also joined.
The protective sheet 24 may simply cover the surface of the pressure measurement sheet 22 side, the surface of the support panel 22 side, and the side surfaces of the two sides parallel to the X-axis direction in the laminated body of the pressure measurement sheet 22 and the support panel 21. Good. That is, if the side surface existing in the walking direction after the tile-shaped sensors 1 are connected to each other is protected, a sufficient effect can be obtained.

By covering with the protective sheet 24, the pressure measuring sheet 22 can be protected from dirt and moisture. Further, when the subject 50 takes off his shoes or shoes and walks on the tile-shaped sensor 1, his feet are caught on the side surface of the pressure measuring sheet 22 and the pressure measuring sheet 22 can be prevented from peeling off from the support panel 21. Further, it is possible to prevent the pressure measuring sheet 22 from being peeled off from the support panel 21 due to something being caught on the side surface of the pressure measuring sheet 22 when the tile-shaped sensor 1 is connected or disassembled.

As a material for such a protective sheet 24, for example, a cloth, a waterproof sheet such as a tarpaulin, or the like can be used. Tarpaulin is a composite sheet in which a fiber cloth is sandwiched between soft synthetic resin films, and is particularly suitable because it is more resistant to stains and stronger than cloth. In addition, since tarpaulin can be heat-welded in a superposed state, it is easier to join than a cloth made by suturing.

Further, the thickness of the protective sheet 24 is preferably 0.1 to 0.5 mm in the case of tarpaulin, for example.

<Joint mat>
The joint mat 3 is laminated on the support panel 1 side of the pressure measurement module 2 (see FIGS. 2 and 3), is made of a rectangular mat material, and has connecting portions 31 on two sides parallel to the X-axis direction. The connecting portion 31 includes a plurality of convex portions 31a and a concave portion 31b having a shape capable of fitting the convex portion 31a between the convex portions 31a (see FIGS. 1 and 4).

The joint mat 3 can be made of a resin having excellent flexibility and elasticity, such as ethylene-vinyl acetate copolymer resin (EVA). By using such a material, it becomes easy to fit.
The thickness of the joint mat 3 is preferably 1 to 5 mm, for example.

<Positional relationship between pressure measurement module and joint mat>
In the tile-shaped sensor 1 of the present embodiment, the distance L1 between the two sides parallel to the X-axis direction of the pressure measurement module 2 is the convex portion 31a of the connecting portion 31 on one side of the joint mat 3 and the concave portion of the connecting portion on the other side. It is equal to the distance L2 from 31b.
With this configuration, when the joint mats 3 are connected to each other, the pressure measurement modules 2 are also adjacent to each other without a gap (see FIG. 8). At this time, the two sides of the pressure measurement module parallel to the X-axis direction do not have an uneven shape like the two sides parallel to the X-axis direction of the joint mat 3. Therefore, it is possible to easily set the pressure measurement area to the very vicinity of the boundary between the adjacent pressure measurement modules 2.
The overlapping width L3 of the pressure measuring module 2 and the joint mat 3 in the Y-axis direction is more preferably 90% or more of the distance L1 from the viewpoint of ease of handling as a tile. For example, the overlapping width L3 is 399 mm with respect to the distance L1: 400 mm of the pressure measurement module 2.

In FIG. 8, a state in which the cover 25 covering the external connection area 21A is removed is depicted. As shown in FIG. 8, the circuit board 23 in each tile-shaped sensor 1 is electrically connected to the pressure measurement sheet 22 of the pressure measurement module via the FPC 26. The circuit boards 23 of the adjacent tile-shaped sensors 1 are electrically connected to each other by a harness 27.

A large pressure distribution sensor 40 in which a plurality of tile-shaped sensors 1 are connected to each other will be further described.
As shown in FIG. 9, the pressure distribution sensor 40 is the sole pressure during walking in each of the five tile-shaped sensors 1 arranged without gaps in the Y-axis direction by connecting the joint mats 3 of the tile-shaped sensors 1 to each other. Each pressure measurement module 2 that detects the distribution area, an output circuit 41 that collects and outputs the results obtained by these pressure measurement modules 2, and an electric signal output from the output circuit 41 derives the stride length of the subject 50 and the like. It has a PC 42.
The circuit boards 23 of the adjacent tile-shaped sensors 1 are connected to each other by a harness. In other words, the number of tile-shaped sensors is not limited to five, and can be connected infinitely if the tile-shaped sensors are physically connected by the connecting portion 31 and then electrically connected to each other by the harness 27. is there. A harness 27 for one tile-shaped sensor 1 at the end of the connected tile-shaped sensors 1 is connected to the output circuit 41.
When the subject 50 walks on the pressure distribution sensor 40, it becomes possible to measure the pressure distribution of the sole of the foot over a long distance, and it is possible to analyze the natural walking state.

2. Second Embodiment FIG. 10 is an explanatory view showing an example of the adhesive layer arrangement of the second embodiment in a state where the tile-shaped sensors are connected to each other.
In the tile-shaped sensor 1 of the present embodiment, the dot-shaped adhesive layer 224 is arranged on the plurality of first band-shaped electrodes 221a and their extension lines. Other than that, it is the same as that of the first embodiment.

With this configuration, when a plurality of tile-shaped sensors 1 are connected in the Y-axis direction, all the rows composed of the pressure-sensitive portion 225 and the dot-shaped adhesive layer 224 are equal to each other in the Y-axis direction. It is easy to arrange them at intervals. Therefore, the same measurement result can be obtained in the region near the seam between the tile-shaped sensors 1 as in the other regions.

3. 3. Other Embodiments Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the invention.

For example, in the above embodiment, the cover that covers the external connection area is provided, but the tile-shaped sensor 1 of the present invention may omit the cover.

Further, in the above embodiment, the protective sheet 24 that covers the pressure measurement module 2 is provided, but it is necessary when the tile-shaped sensor 1 of the present invention is connected to install the pressure distribution sensor and then the carpet or the like is stacked on top of it. Depending on the situation, the protective sheet can be omitted.

Further, in the above embodiment, the pressure measuring sheet 22 uses a resistance film type matrix type, but other methods may be used.

Further, although the example in which the pressure sensitive layer 223 is provided on the second band-shaped electrode 222a side in the above embodiment is shown, it may be provided on the first band-shaped electrode 221a side. Further, the pressure sensitive layer 223 may be provided on both sides of the first band-shaped electrode 221a and the second band-shaped electrode 222a.

Further, in the pressure measurement module of the above embodiment, the pressure measurement sheet is formed into a film.
Laminated on a support panel made of rigid material, but not limited to this. For example, a rigid material may be used for the pressure measurement sheet itself, and the support panel may be omitted.

In addition to gait analysis, the tile-shaped sensor of the present invention can be used for measuring the exercise state of an athlete and measuring the sleep state by measuring the pressure distribution applied to the body of a sleeping person.

1: Tile-shaped sensor 2: Pressure measurement module 3: Joint mat 21: Support panel 21A: External connection area 22: Pressure measurement sheet 23: Circuit board 24: Protective sheet 25: Cover 26: FPC
27: Harness 31: Connecting part 31a: Convex part 31b: Concave part 40: Pressure distribution sensor 41: Output circuit 42: PC
50: Subject 221: First base material 221a: First strip-shaped electrode 221b: First wiring 222: Second base material 222a: Second strip-shaped electrode 222b: Second wiring 223: Pressure-sensitive layer 224: Adhesive layer 225: Pressure-sensitive Department

Claims (8)

A pressure measurement module having a rectangular shape having two sides parallel to each of the X-axis direction and the Y-axis direction, a pressure measurement sheet, and a circuit board electrically connected to the pressure measurement sheet.
It is laminated on the pressure measurement module, is made of a rectangular matte material, and has a plurality of convex portions on two sides parallel to the X-axis direction, and a concave portion having a shape in which the convex portion can be fitted between the convex portions. With a joint mat having a connecting part ,
The pressure measurement module is fixed on the joint mat by shifting the position in the Y-axis direction with respect to the joint mat.
A tile-shaped sensor in which the distance L1 between two sides parallel to the X-axis direction of the pressure measurement module is equal to the distance L2 between the convex portion of the connecting portion on one side of the joint mat and the concave portion of the connecting portion on the other side.

The tile-shaped sensor according to claim 1, wherein the overlapping width L3 of the pressure measuring module and the joint mat in the Y-axis direction is 90% or more of the distance L1. The pressure measurement module
A rectangular support panel made of rigid material with two sides parallel to each of the X-axis direction and the Y-axis direction.
A film-like pressure measurement sheet laminated on one surface of the support panel except for an external connection region existing along one side parallel to the Y-axis direction.
The circuit board provided in the external connection region of the support panel and
The tile-shaped sensor according to claim 1 or 2, wherein the sensor is provided with. About the laminated body of the pressure measurement sheet and the support panel
A protective sheet is further provided which covers at least the surface on the pressure measuring sheet side, the surface on the support panel side, and the side surfaces of the two sides parallel to the X-axis direction, and the portions covering the respective surfaces are continuous or joined to each other. The tile-shaped sensor according to claim 3. The pressure measurement sheet
A first base material and a second base material arranged so as to face the first base material,
A plurality of first band-shaped electrodes extending in the X-axis direction and arranged side by side in the Y-axis direction on the first base material and on the side of the second base material.
A plurality of second band-shaped electrodes formed side by side on the second base material on the first base material side so as to intersect the first band-shaped electrode.
A pressure-sensitive layer formed so as to cover at least one of the first band-shaped electrode and the second band-shaped electrode, and
The tile-shaped sensor according to claim 3 or 4. Of the two sides parallel to the Y-axis direction of the pressure measurement sheet, the wiring from the first band-shaped electrode and the second band-shaped electrode is collected on one side on the external connection region side to form the first connection terminal and the first side. Equipped with 2 connection terminals
From the plurality of first band-shaped electrodes, first wiring is formed as it is from one end on the external connection region side to the first connection terminal.
5. Claim 5 in which a second wiring is formed from each of the plurality of second band-shaped electrodes via an insulating layer so as to cross another second band-shaped electrode existing between the plurality of second band-shaped electrodes and the second connection terminal. The tiled sensor described. A plurality of adhesive layers that are arranged in a dot shape avoiding the intersection of the plurality of first band-shaped electrodes and the plurality of second band-shaped electrodes and that adhere the first base material and the second base material are further added. The tile-shaped sensor according to claim 5 or 6. The tile-shaped sensor according to claim 7, wherein the dot-shaped adhesive layer is arranged on the plurality of first band-shaped electrodes and extension lines thereof.

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