WO2022191323A1 - 皮膚抵抗計測装置、皮膚の応答能の評価方法、及び行動情動判定方法 - Google Patents
皮膚抵抗計測装置、皮膚の応答能の評価方法、及び行動情動判定方法 Download PDFInfo
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Definitions
- the present invention relates to a skin resistance measuring device, a skin responsiveness evaluation method, and a behavioral emotion determination method.
- This application claims priority based on Japanese Patent Application No. 2021-039017 filed in Japan on March 11, 2021, the contents of which are incorporated herein.
- the present invention has been made in view of the above points. To provide an evaluation method of and a behavioral emotion determination method.
- the present invention has been made to solve the above problems, and one aspect of the present invention is a pair of electrode units provided on the epidermis, and a measurement unit that measures the skin resistance between the pair of electrode units.
- the pair of electrode units is a skin resistance measuring device having a structure in which the epidermis is naturally dried.
- the electrode section has a fiber network.
- the electrode section has fine linear members arranged at predetermined intervals.
- the electrode section has a striped opening.
- the electrode section is a foil-shaped electrode provided with a crack or a pinhole.
- the electrode section has a structure that releases moisture absorbed on a surface in contact with the epidermis.
- one aspect of the present invention includes a pair of electrode units provided on the epidermis, a measurement unit that measures skin resistance between the pair of electrode units, and the electrode units contacting the epidermis and at the epidermis
- a skin resistance measuring device comprising: an epidermal contact part having a structure in which the skin is naturally dried; and a connecting part for electrically connecting the electrode part and the measuring part.
- the connecting portion has air permeability.
- the area of the portion of the surface of the skin contact portion that is in contact with the connection portion is larger than the area of the portion that is not in contact with the connection portion. is also small.
- a conductive member having air permeability is inserted between the electrode section and the connection section.
- the electrode unit further has a non-skin contact portion that is not in contact with the skin, and the non-skin contact portion and the connection portion are mutually It further comprises an insulating part that has an overlapping region and electrically insulates the skin non-contact part and the skin in the region.
- the skin resistance measuring device further includes a detection circuit that detects whether or not the electrode section and the connection section are connected.
- one aspect of the present invention includes a pair of electrode units provided on the epidermis, and a measurement unit that measures the skin resistance between the pair of electrode units by applying a DC voltage to the pair of electrode units.
- the pair of electrode units has a structure in which the epidermis naturally dries.
- the measurement unit applies a DC voltage to the pair of electrode units for a first time, which is a predetermined time, before measuring the skin resistance. After the application, the skin resistance is measured, and the application of the DC voltage to the pair of electrodes is stopped for a second time, which is a predetermined time.
- one aspect of the present invention includes a measurement step of measuring skin resistance between a pair of electrode portions having a structure that is provided on the epidermis to be measured and allows the epidermis to naturally dry, and in the measurement step and an evaluation step of evaluating the responsiveness of the skin to changes in the external environment and living behavior of the measurement target based on the measured skin resistance.
- one aspect of the present invention includes a measurement step of measuring skin resistance between a pair of electrode portions having a structure that is provided on the epidermis to be measured and allows the epidermis to naturally dry, and in the measurement step and a determination step of determining the behavior and/or emotion to be measured based on the measured skin resistance.
- the measurement can be performed for a long time without inhibiting the natural evaporation of water from the skin.
- FIG. 4 is a diagram showing an example of measurement results of changes in skin resistance over time according to the first embodiment of the present invention
- 1 is a diagram showing an example of the external appearance of a skin resistance measuring device attached to the epidermis with electrodes covered by a film cover according to the first embodiment of the present invention.
- FIG. 4 is a diagram showing an example of measurement results of changes in skin resistance over time according to the first embodiment of the present invention; It is a figure which shows an example of the time change of the skin resistance which extracted the measurement result about the period from a measurement start to 2 hours among the measurement results based on the 1st Example of this invention.
- FIG. 4 is a diagram showing an example of changes in skin resistance that occur when the film according to the first embodiment of the present invention is attached and detached.
- FIG. 4 is a diagram showing an example of a drying process of perspiration due to exercise according to the first embodiment of the present invention;
- FIG. 10 is a diagram showing an example of the external appearance of a skin resistance measuring device attached to the epidermis with electrodes covered by a bandage according to the second embodiment of the present invention.
- FIG. 10 is a diagram showing an example of measurement results of changes in skin resistance over time when a bandage is applied to the epidermis according to the second embodiment of the present invention
- FIG. 10 is a diagram showing an example of measurement results for verifying the reproducibility of the effect on skin resistance when a bandage is applied to the epidermis according to the second embodiment of the present invention.
- FIG. 8 is a diagram showing an example of measurement results for verifying the reproducibility of the effect on skin resistance when the polyurethane film according to the second example of the present invention is attached to the epidermis.
- FIG. 10 is a diagram showing an example of measurement results of skin resistance when the film cover according to the second embodiment of the present invention is attached to the epidermis so as to cover the electrodes and then removed.
- FIG. 10 is a diagram showing an example of the result of measurement of transepidermal water loss by a comparison skin measuring instrument according to the second example of the present invention.
- FIG. 10 is a diagram showing an example of a comparison between the measurement result of skin resistance using the skin resistance measuring device according to the second embodiment of the present invention and the measurement result of transepidermal water loss using a skin measuring instrument for comparison.
- FIG. 10 is a diagram showing an example of the result of calculating a correlation coefficient for the correlation between skin resistance and transepidermal water loss according to the second example of the present invention
- FIG. 10 is a diagram showing an example of the result of measuring the moisture content of the stratum corneum using a skin measuring instrument for comparison according to the second example of the present invention.
- FIG. 10 is a diagram showing an example of measurement results of skin resistance when polyethylene is used as the film cover covering the electrodes according to the third example of the present invention.
- FIG. 10 is a diagram showing an example of measurement results of skin resistance when polyurethane is used as the film cover covering the electrodes according to the third example of the present invention.
- FIG. 10 is a diagram showing an example of measurement results when a person to be measured is a man in his 60s and polyethylene is used as the film cover according to the third embodiment of the present invention;
- FIG. 10 is a diagram showing an example of measurement results when the person to be measured is the man and polyurethane is used as the film cover according to the third embodiment of the present invention.
- FIG. 10 is a diagram showing an example of the measurement result when the person to be measured is a woman in her 40s and polyethylene is used as the film cover according to the third embodiment of the present invention
- FIG. 31 is a diagram showing an example of results obtained by enlarging the range of the measurement results of FIG. 30 in the direction of the skin resistance value according to the third example of the present invention
- FIG. 10 is a diagram showing an example of the measurement result of skin resistance according to a comparative example of the fourth example of the present invention
- FIG. 10 is a diagram showing an example of the measurement result of skin resistance according to a comparative example of the fourth example of the present invention
- It is a figure which shows an example of the measurement result of the skin resistance based on the 4th Example of this invention.
- FIG. 1 is a diagram showing an example of the appearance of a skin resistance measuring device 1 attached to the skin according to this embodiment. As shown in FIG. 1, the skin resistance measuring device 1 is directly attached to the skin of a person to be measured, and the skin resistance is measured. The skin resistance measuring device 1 is a wearable measuring device.
- skin resistance includes the resistance of the pathway from one location of the epidermis through the epidermis to the other location of the epidermis and the resistance of the pathway from one location of the epidermis through the subcutaneous tissue to the other location of the epidermis. resistance.
- the skin resistance is mainly the latter.
- the skin resistance is mainly the resistance of the route from one position of the epidermis through the subcutaneous tissue to the other position of the epidermis.
- FIG. 2 is a diagram showing an example of the configuration of the skin resistance measuring device 1 according to this embodiment.
- FIG. 3 is a diagram showing an example of a cross-sectional view of the skin resistance measuring device 1 according to this embodiment.
- a skin resistance measuring device 1 includes an electrode section 2 and a measuring section 3 .
- the electrode part 2 is provided on the epidermis 4 .
- the electrode section 2 includes an electrode 20 and a connection section 21 .
- the electrode 20 is composed of a pair of electrodes, an electrode 20-1 and an electrode 20-2. Since the electrode 20-1 and the electrode 20-2 have the same configuration, the electrode 20-1 and the electrode 20-2 will be referred to as the electrode 20 in the following description unless they are distinguished from each other.
- the electrodes 20 are provided in contact with the epidermis 4 .
- the shape of the electrode 20 is not particularly limited, and may be rectangular, circular, or comb-shaped. Circular or comb-shaped shapes are generally used as shapes of electrodes provided in commercially available electrodermal activity (EDA) and skin moisture measuring machines. However, when it is actually used, it is necessary for anyone to be able to use it easily. An example is a plate-like or foil-like (film-like) rectangle.
- the shape of the electrode 20 is also called strip-like.
- the electrode 20 is large enough to cover one or more sweat glands on the epidermis 4 .
- the size of the electrode 20 is, for example, about 6 mm on the short side and about 24 mm to 35 mm on the long side.
- the distance between the electrodes 20-1 and 20-2 is, for example, about 1 mm to 2 mm.
- a current path passing through the epidermis may occur due to intense sweating or the like, and the distance between the electrodes 20-1 and 20-2 should be 2 mm or more as necessary in order to prevent the current path from occurring. may
- the electrode 20 has, for example, a fiber network made of nanofibers.
- the electrode 20 has a nanomesh structure.
- the electrode 20 is, for example, an electrode layer formed by forming a nanofiber fiber network made of water-soluble polyvinyl alcohol (PVA) by an electrospinning method and depositing gold thereon.
- PVA water-soluble polyvinyl alcohol
- the nanofibers that make up the fiber network of the electrode 20 have a diameter of 200 nm to 2 ⁇ m.
- the film thickness of the deposited gold is 10 nm to 200 nm.
- the electrode 20 by having the above-described nanomesh structure, surface followability, stretchability in the lateral direction, gas and moisture permeability, and transparency are enhanced.
- the electrode 20 has air permeability by having a nanomesh structure. Breathability means high gas and moisture permeability. Therefore, when water evaporates from sweat secreted from sweat glands distributed on the epidermis 4 with which the electrode 20 is in contact and from the stratum corneum of the skin, the amount of water evaporation is the same as the amount of evaporation in the case where the electrode 20 is not provided. close to quantity. That is, since the electrode 20 has a nanomesh structure, the skin 4 in contact with the electrode 20 is naturally dried.
- the electrode 20 has a structure that allows the skin 4 to dry naturally.
- the fact that the skin 4 dries naturally means that it has higher breathability than, for example, polyurethane or the like.
- the air permeability is, for example, about 1000 g/m2 ⁇ 24h to 20000 g/m2 ⁇ 24h.
- the electrode 20 is an example of a skin contact portion provided in the electrode portion. It should be noted that the electrode 20 may have a structure other than the nanomesh structure as a structure that naturally dries on the epidermis 4 . Another example of a structure in which the skin 4 naturally dries is given here.
- the electrode 20 may have a structure in which a plurality of fine linear members such as nanofibers are arranged substantially parallel.
- the electrode 20 may have a grid structure formed by arranging a plurality of linear members substantially perpendicular to each other.
- the electrode 20 may have fine linear members arranged at predetermined intervals.
- the distance between the plurality of linear members is, for example, wider than the diameter of a sweat gland. Even if the distance between the plurality of linear members is narrower than the diameter of the sweat gland, the opening ratio of the surface of the electrode 20 that is in contact with the epidermis 4 is set to be greater than or equal to a predetermined value.
- the width of the fine linear member is, for example, 1 mm or less.
- the fine linear members are arranged so that the aperture ratio is, for example, 50%.
- the electrode 20 may have stripe-shaped openings.
- the opening is, by way of example, of rectangular shape.
- the area of the openings and the distance between the adjacent openings are set wide enough so that the opening ratio of the surface of the electrode 20 in contact with the skin 4 is greater than or equal to a predetermined value.
- the area of the openings and the interval between adjacent openings are arranged such that the opening ratio is, for example, 50%.
- the electrode 20 may be a cracked foil electrode.
- the width of the cracks, the average distance between the cracks, and the number of cracks are such that the aperture ratio of the surface of the electrode 20 in contact with the skin 4 is above a predetermined value.
- the foil electrode is, for example, gold foil.
- the electrode 20 may have a plurality of holes so that the skin 4 is naturally dried.
- the electrode 20 may be a foil electrode provided with a plurality of pinholes. The diameter of the pinholes, the average distance between the pinholes, and the number of pinholes are adjusted so that the aperture ratio of the surface of the electrode 20 in contact with the skin 4 is greater than or equal to a predetermined value.
- the pinhole diameter is several tens of ⁇ m to several hundred ⁇ m, and the average distance between pinholes is 0.1 mm to 1 mm.
- the electrode 20 in order for the electrode 20 to have a structure such as air permeability that allows the skin 4 to dry naturally, the electrode 20 must be provided with a gap of a predetermined size or more. , the sweat glands preferably do not cover more than a predetermined percentage. In other words, it is preferable that the surface area of the electrode 20 in contact with the epidermis 4 is equal to or less than a predetermined size. On the other hand, when the surface area of the electrode 20 becomes small, the contact resistance of the electrode 20 becomes large, so that it becomes difficult for the current to flow between the electrodes 20-1 and 20-2, making it difficult to measure the skin resistance itself. For this reason, the size of the gap provided between the electrodes 20 is preferably within a predetermined range.
- the aperture ratio of the surface of the electrode 20 in contact with the skin 4 is, for example, 10% or more. More preferably, the aperture ratio is 30 percent or more.
- FIG. 4 shows an example of the relationship between the surface area of the electrode 20 and skin resistance according to this embodiment.
- the surface area of the electrode 20 is a value calculated from the outer shape of the electrode 20, but the actual surface area of the electrode is calculated by multiplying the surface area of the outer shape of the electrode by the occupancy rate of the electrode in the outer shape. .
- the electrode 20 has a structure in which the epidermis 4 naturally dries, and even when it absorbs moisture (including perspiration) that evaporates from the skin, the absorbed moisture is released from the surface in contact with the epidermis 4. It may have a structure. For example, the electrode 20 releases moisture absorbed on the surface in contact with the epidermis 4 from the surface opposite to the surface. If the electrode 20 has a structure that releases the absorbed moisture on the surface in contact with the epidermis 4, the material of the electrode 20 is, for example, a water retaining material used for the skin.
- the water retaining material is, for example, polyvinyl alcohol, modified polyvinyl alcohol, sodium polyacrylate, collagen, glycerin, or the like.
- the connecting portion 21 electrically connects the electrode 20 and the measuring portion 3 .
- the connection portion 21 is composed of a connection portion 21-1 and a connection portion 21-2.
- the connecting portion 21-1 electrically connects the electrode 20-1 and the measuring portion 3.
- the connecting portion 21-2 electrically connects the electrode 20-2 and the measuring portion 3.
- the connecting part 21 is molded into a thin film.
- the connection portion 21 is composed of an electrode contact portion 210 , a connecting portion 211 and a connector contact portion 212 .
- the electrode contact portion 210, the connecting portion 211, and the connector contact portion 212 are shown only for the connection portion 21-2.
- the electrode contact portion 210 contacts the surface of the electrode 20 .
- the connector contact portion 212 contacts a connector provided in the measuring portion 3 .
- the connecting portion 211 connects the electrode contact portion 210 and the connector contact portion 212 .
- the electrode contact portion 210 and the connector contact portion 212 are thin plate-shaped.
- the electrode contact portion 210 contacts the electrode 20 from above.
- the electrode contact portion 210 may be biased toward the epidermis 4 from above by the biasing force of the connecting portion 211 .
- the upper side is the side of the surface of the electrode 20 that is not in contact with the epidermis 4 .
- the adhesive portion 22 is attached to the outer skin 4 including the electrode contact portion 210 of the connection portion 21 .
- the electrode contact portions 210 are attached to the outer skin 4 for each of the connection portion 21-1 and the connection portion 21-2 by one adhesive portion 22.
- the adhesive portion 22 is attached from the top of the electrode 20 and the electrode contact portion 210.
- the adhesive portion 22 between the electrode 20-1 and the electrode contact portion 210 may be separately provided between the electrode 20 - 2 and the electrode contact portion 210 .
- a conductive material such as a sponge coated with a highly conductive carbon material is placed between the electrode 20 and the electrode contact portion 210 vertically.
- a flexible and stretchable material may be provided.
- to coat the sponge with a certain substance means to attach the substance to each surface of fine fibers constituting the sponge.
- a highly stretchable material such as sponge may be provided between the adhesive portion 22 and the electrode contact portion 210 for the purpose of increasing the pressing pressure of the electrode contact portion 210 against the electrode 20 .
- the adhesive portion 22 prevents the electrode 20 and the electrode contact portion 210 from peeling off from the epidermis 4 . Any material may be used for the adhesive portion 22 as long as it has adhesiveness, can be attached to the epidermis 4 for a long period of time, and does not easily affect the epidermis 4 such as inflammation.
- the adhesive portion 22 preferably has air permeability.
- the adhesive portion 22 is, for example, a medical surgical tape.
- the connector contact portion 212 is connected to the surface of the measuring portion 3 on the side opposite to the skin, but as shown in FIG. may be connected by Similarly, although the electrode contact portion 210 is connected to the electrode 20 on the surface opposite to the surface in contact with the epidermis in FIG. 2, the electrode contact portion 210 may be connected between the epidermis and the electrode 20. . In FIG. 2, the connection portion 21 is used as wiring for electrically connecting the electrode 20 and the measurement portion 3, but the electrode 20 can be electrically connected directly to the measurement portion 3 without using the connection portion 21. good too.
- the air-permeable region R1 indicates a portion of the surface of the electrode 20 that is not in contact with the electrode contact portion 210.
- a non-breathable region R2 indicates a portion of the surface of the electrode 20 that is in contact with the electrode contact portion 210 .
- the electrodes 20 have air permeability.
- the connecting portion 21 does not have air permeability. Therefore, the electrode part 2 has air permeability in the air-permeable region R1, but the electrode part 2 does not have air permeability in the non-air-permeable region R2.
- the area of the non-breathable region R2 on the surface of the electrode portion 2 is smaller than the area of the breathable region R1.
- the area of the portion of the surface of the electrode 20 that is an example of the skin contact portion that is in contact with the connection portion 21 is smaller than the area of the portion that is not in contact with the connection portion 21 . Therefore, in the skin resistance measuring device 1, the area of the portion of the surface of the electrode 20 that is in contact with the connection portion 21 is larger than the area of the portion that is not in contact with the connection portion 21.
- Higher air permeability can have
- connection portion 21 is covered with an insulating material except for the connection portion, the connection portion 21 may have a portion in contact with the outer skin 4 .
- a portion of the connecting portion 211 may be in contact with the outer skin 4 .
- the connecting portion 211 is narrower than the electrode contact portion 210 and the connector contact portion 212 . As a result, when an external force is applied to the skin resistance measuring device 1 , the connection part 211 bends to absorb the external force, thereby preventing the skin resistance measuring device 1 and the electrodes 20 from being damaged.
- the connecting portion 21 is formed by plating or vapor-depositing gold on the surface of copper formed on a polyurethane film.
- the material forming the connecting portion 21 should be conductive.
- metals such as copper, gold, aluminum, silver and zinc can be used. From the viewpoint of conductivity, copper and silver are particularly preferable.
- the connecting portion 21 has a portion in contact with the outer skin 4, it is preferable to use stable gold in order to suppress unnecessary reactions.
- the connection part 21 may be made of polyurethane having conductivity.
- connection portion 21 has copper wiring formed on a polyurethane film, is covered with a polyurethane film, and has openings at the electrode contact portion 210 and the connector contact portion 212, respectively.
- the top surface is plated with gold. For this reason, portions other than the electrode contact portion 210 and the connector contact portion 212 among the portions constituting the connection portion 21 are electrically insulated.
- the measurement unit 3 measures the skin resistance between the electrodes 20-1 and 20-2.
- the measurement unit 3 measures the skin resistance between the electrodes 20-1 and 20-2 by applying a DC voltage between the electrodes 20-1 and 20-2.
- the skin resistance measuring device 1 applies a DC voltage.
- the impedance including the capacitance component and the resistance component of the skin is measured, and the direct current resistance of the skin cannot be measured directly.
- the skin resistance measuring device 1 can directly measure a skin resistance value by applying a DC voltage.
- the measurement unit 3 includes a board 30 , a switch 31 , a memory 32 and a battery 33 .
- Various parts including a switch 31, a memory 32, a battery 33, and an arithmetic circuit IC (not shown) for measuring a resistance value are electrically connected and arranged on the substrate 30.
- FIG. Substrate 30 is provided in contact with skin 4 .
- the substrate 30 has a size of about 23 mm long ⁇ 16 mm wide, for example. Since the skin resistance measuring device 1 is a wearable measuring device, it is preferable that the size of the substrate 30 is small. If the size of the substrate 30 is too large, it will be difficult to attach it to the skin 4 .
- the substrate 30 is, for example, a film substrate such as a polyimide film. Since the substrate 30 is a film substrate, it is possible to ensure ease of attachment when attached to the epidermis 4 and followability to skin deformation.
- the switch 31 switches the power of the measurement unit 3 between on and off.
- the measurement unit 3 measures the skin resistance when the switch 31 is in the ON state.
- the memory 32 stores a time-series pattern of on and off voltages applied to the electrodes 20 .
- the memory 32 stores the skin resistance values measured by the measuring unit 3 in chronological order.
- the battery 33 supplies power to the measuring section 3 when the switch 31 is in the ON state.
- FIG. 5 is a diagram showing an example of a cross-sectional view of a skin resistance measuring device 1a according to a modification of this embodiment.
- a skin resistance measuring device 1 a includes an electrode section 2 a and a measuring section 3 .
- the electrode portion 2a includes an electrode 20a and a connection portion 21a.
- the connection portion 21 a is composed of an electrode contact portion 210 a , a connecting portion 211 and a connector contact portion 212 .
- Skin resistance measuring device 1a differs from skin resistance measuring device 1 shown in FIG. 3 in electrodes 20a and electrode contact portions 210a.
- the configuration of the skin resistance measuring device 1a is the same as the configuration of the skin resistance measuring device 1 shown in FIG.
- the shape of the electrode 20a differs from the shape of the electrode 20 shown in FIG. 3 in that the longer side of the rectangle is shorter.
- the surface area of the electrode contact portion 210a and the surface area of the electrode 20a are substantially equal.
- the adhesive portion 22 shown in FIG. 2 is omitted in the cross-sectional view shown in FIG. 5, an adhesive member with high air permeability is attached to the skin 4 including the electrode contact portion 210a of the connection portion 21a. ing.
- a breathable region R3 indicates a portion where the electrode 20a and the electrode contact portion 210a overlap.
- the non-breathable region R4 indicates the connecting portion 211 of the connecting portion 21a.
- the skin resistance measuring device 1a has air permeability in the air-permeable region R3 and does not have air permeability in the non-air-permeable region R4.
- the connecting portion 211 is narrower than the electrode contact portion 210a and the connector contact portion 212a. Therefore, in the non-breathable region R4 indicating the connecting portion 21a, accumulation of secretions such as sweat during measurement can be suppressed.
- the electrode contact portion 210a has, for example, a structure in which a plurality of holes with a predetermined diameter are provided.
- the electrode contact portion 210a may have a mesh structure in place of the structure in which a plurality of holes with a predetermined diameter are provided.
- the aperture ratio in this portion is equal to or greater than a predetermined value.
- the electrode contact portion 210a has a structure in which the epidermis is naturally dried. Therefore, even if the electrode 20a and the electrode contact portion 210a overlap, the overlapped portion has air permeability.
- the skin resistance measuring device 1a has a structure in which the epidermis is naturally dried, and the size of the device can be made compact only in the portion where the electrode 20a and the electrode contact portion 210a overlap.
- the present invention is not limited to this.
- the surface area of the electrode contact portion 210a may be smaller than the surface area of the electrode 20a. That is, the area of the portion of the surface of the electrode 20a that is in contact with the connection portion 21a may be smaller than the area of the portion that is not in contact with the connection portion 21a.
- connection portion 21 or the connection portion 21a is provided on the upper side of the electrode 20 (that is, on the surface of the electrode 20 opposite to the skin 4) has been described, but this is not the only case.
- a connecting portion 21 may be provided between the electrode 20 and the skin 4 (that is, the surface of the electrode 20 on the skin 4 side).
- the electrode section 2 may not include the connecting section 21 and the electrode 20 may be directly connected to the measuring section 3 .
- the measurement unit 3 or both the measurement unit 3 and the connection unit 21 may be detachable while the electrodes 20 are attached to the epidermis 4 .
- the measurement unit 3 may be replaced while the electrodes 20 are attached to the epidermis 4 during the measurement process.
- the connecting portion 21 is made of a non-breathable wiring material
- a wiring material may be used in which electrodes are formed in a mesh pattern on a highly air permeable polyurethane substrate having a thickness of 50 ⁇ m or less.
- the connecting portion 21 can have air permeability.
- an adhesive member with high air permeability is used for the adhesive portion 22, it becomes possible to ensure air permeability even in the non-air-permeable region R2 shown in FIG. Therefore, skin resistance can be accurately measured even when the area of the R2 region is not sufficiently smaller than the area of the R1 region. Further, when an adhesive member with high air permeability is used for the adhesive portion 22, it is not necessary to make the area of the R2 region sufficiently smaller than the area of the R1 region. be possible.
- FIG. 6 is a diagram showing an example of the configuration of a skin resistance measuring device 1b according to a modification of this embodiment.
- FIG. 7 shows an example of the appearance of a skin resistance measuring device 1b attached to the skin according to a modified example of this embodiment.
- FIG. 8 is a diagram showing an example of a cross-sectional view of a skin resistance measuring device 1b according to a modification of this embodiment. 8, the components on the substrate 30, such as the switch 31 and the memory 32 shown in FIG.
- the skin resistance measuring device 1b includes an electrode section 2b, a measuring section 3, and a case 8b. Since the configuration of the measurement unit 3 shown in FIG. 6 is the same as the configuration of the measurement unit 3 shown in FIG. 2, the description thereof is omitted.
- the electrode portion 2b includes an electrode 20b, a connection portion 21b, and a conductive sponge 23b.
- the electrode 20b is composed of a pair of electrodes, an electrode 20b-1 and an electrode 20b-2. Since the electrode 20b-1 and the electrode 20b-2 have the same configuration, the electrode 20b-1 and the electrode 20-2b are referred to as the electrode 20b in the following description unless they are distinguished from each other.
- the conductive sponge 23b is a member having air permeability and conductivity.
- the conductive sponge 23b is made of a foamed sponge such as polyurethane, and a portion of the foamed sponge is coated with a conductive substance to impart conductivity. Coating a portion of the foamed sponge with a conductive substance means to attach the substance to each surface of fine fibers that constitute the portion.
- the conductive substance is, for example, silver/silver chloride, silver or carbon.
- the conductive sponge 23b is composed of a conductive portion 23b-1, a conductive portion 23b-2, and a non-conductive portion 23b-3.
- Each of the conductive portion 23b-1 and the conductive portion 23b-2 has conductivity.
- Each of the conductive portion 23b-1 and the conductive portion 23b-2 is a portion of foam sponge coated with a substance having conductivity.
- the non-conductive portion 23b-3 does not have electrical conductivity.
- the non-conductive portion 23b-3 is made of foam sponge and is not coated with a conductive substance.
- the non-conductive portion 23b-3 is disposed between the conductive portion 23b-1 and the conductive portion 23b-2 to isolate the conductive portion 23b-1 and the conductive portion 23b-2.
- the conductive portion 23b-1 is arranged between the electrode 20b-1 and the connection portion 21b-1. Thereby, the conductive portion 23b-1 electrically connects the electrode 20b-1 and the connection portion 21b-1.
- the conductive portion 23b-2 is arranged between the electrode 20b-2 and the connecting portion 21b-2. Thereby, the conductive portion 23b-2 electrically connects the electrode 20b-2 and the connection portion 21b-2. That is, the connection portion 21b electrically connects the electrode 20b and the measurement portion 3 via the conductive portions 23b-1 and 23b-2.
- the case 8b covers the electrode section 2b and the measurement section 3. As shown in FIG. 7, in the skin resistance measuring device 1b, the measuring unit 3 is covered with the case 8b, so that the measuring unit 3 is exposed when the skin resistance measuring device 1b is attached to the skin. prevent
- a vent 80b is provided in the case 8b.
- the case 8b is shown divided into three parts: a part 8b-1, a part 8b-2, and a part 8b-3.
- a vent 80b is provided between the portion 8b-1 and the portion 8b-2.
- the conductive sponge 23b is exposed from the vent 80b. Therefore, in the skin resistance measuring device 1b, even when the case 8b covers the measuring section 3, the electrode 20b has a structure in which the skin 4 naturally dries.
- a portion 8b-3 is a portion where the case 8b is in contact with the skin 4.
- the portion 8b-3 has adhesiveness on the surface and can be attached to the epidermis 4.
- FIG. Part 8b-3 may comprise a seal. In this case, when attaching the skin resistance measuring device 1b to the epidermis 4, the backing paper of the seal included in the portion 8b-3 is peeled off and the portion 8b-3 is attached to the epidermis 4.
- the skin resistance measuring device 1b can be easily attached to the epidermis 4 by the adhesiveness of the portion 8b-3.
- the case 8b covers the electrode section 2b and the measuring section 3, so that the electrode section 2b and the measuring section 3 can be fixed to the epidermis 4 by attaching the case 8b to the epidermis 4.
- the case 8b may be made of any material as long as it is soft and does not easily damage the skin.
- the material of the case 8b is, for example, silicone, polyurethane having a predetermined thickness or more, foaming agent, or the like.
- the electrode 20 in the non-breathable region R2, which is the portion of the surface of the electrode 20 that is in contact with the electrode contact portion 210 of the connection portion 21, , the electrode 20 is not air permeable.
- the electrode 20 in the skin resistance measuring device 1 according to the present embodiment, by making the area of the portion of the surface of the electrode 20 in contact with the connection portion 21 smaller than the area of the portion not in contact with the connection portion 21, the electrode Compared to the case where the area of the portion of the surface of 20 that is in contact with the connection portion 21 is larger than the area of the portion that is not in contact with the connection portion 21, the air permeability is higher. That is, in the skin resistance measuring device 1 according to the present embodiment, by minimizing the non-breathable portion of the electrode 20 in contact with the skin, the measurement result of the skin resistance of the non-breathable portion is obtained. minimized the influence of
- the non-breathable region As a configuration of the skin resistance measuring device, by electrically insulating the electrode and the skin in the non-breathable region, which is the portion of the surface of the electrode that is in contact with (overlapping) the connection part, the non-breathable region may further reduce the influence on the measurement results of skin resistance.
- the electrode and the skin are electrically connected between the electrode and the skin at the portion of the surface of the electrode that is in contact with the electrode contact portion. A case where an insulating material for insulation is provided will be described.
- FIG. 9 is a diagram showing an example of a cross-sectional view of a skin resistance measuring device 1c according to a modified example of this embodiment.
- the skin resistance measuring device 1c includes an electrode section 2c, a measuring section 3c, an adhesive tape 91c, and a double-sided tape 92c.
- the electrode portion 2c includes an electrode 20c and a connection portion 21c.
- the configuration of the skin resistance measuring device 1c is the same as the configuration of the skin resistance measuring device 1 shown in FIG.
- the electrode portion 2c has a different shape than the electrode 20 shown in FIG.
- the electrode part 2c has a structure such as a nanomesh structure that naturally dries on the epidermis 4.
- the electrode 20c is composed of a skin contact portion 200c, a connecting portion 201c, and a tape contact portion 202c. Skin contact portion 200c, connecting portion 201c, and tape contact portion 202c are each shaped like a thin plate.
- Skin contact portion 200 c is provided in contact with epidermis 4 .
- the tape contact portion 202c contacts the adhesive tape 91c on the skin 4 side.
- the tape contact portion 202c contacts the electrode contact portion 210c on the side opposite to the skin 4.
- the electrode 20c is sandwiched between the adhesive tape 91c and the connecting portion 21c at the tape contact portion 202c.
- the electrode 20c overlaps the adhesive tape 91c and the connecting portion 21c at the tape contact portion 202c. Since the tape contact portion 202c is provided on the adhesive tape 91c, the height from the epidermis 4 is higher than that of the skin contact portion 200c.
- Connecting portion 201c connects skin contact portion 200c and tape contact portion 202c.
- Connecting portion 201c has a bent plate-like shape to connect skin contacting portion 200c and tape contacting portion 202c which have different heights from epidermis 4 .
- the adhesive tape 91c is attached to the skin 4 and provided between the skin 4 and the tape contact portion 202c. Thereby, the adhesive tape 91c insulates the electrode 20c and the skin 4 at the tape contact portion 202c.
- the material of the adhesive tape 91c is, like the adhesive portion 22 (FIG. 1), a material that has adhesiveness, can be attached to the epidermis 4 for a long time, and is less likely to cause inflammation or the like on the epidermis 4. good.
- the adhesive tape 91c preferably has air permeability.
- the adhesive tape 91c is, for example, a medical surgical tape.
- the connecting portion 21c electrically connects the electrode 20c and the measuring portion 3c.
- the connecting portion 21c is molded into a thin film.
- the connection portion 21c is composed of an electrode contact portion 210c, a connecting portion 211c, and a connector contact portion 212c.
- Electrode contact portion 210c contacts the surface of electrode 20c at tape contact portion 202c.
- the connector contact portion 212c contacts a connector provided in the measuring portion 3c.
- the electrode contact portion 210c and the connector contact portion 212c are thin plate-shaped.
- the connecting portion 211c connects the electrode contact portion 210c and the connector contact portion 212c.
- the connecting portion 211c has a bent plate-like shape to connect the electrode contact portion 210c and the connector contact portion 212c having different heights from the outer skin 4 . If the height of the electrode contact portion 210c from the skin 4 and the height of the connector contact portion 212c from the skin 4 are the same, the connecting portion 211c may have a plate-like shape that is not bent. good.
- the measurement unit 3c has the same configuration as the measurement unit 3 (Fig. 3) except for the portion where the connector is provided.
- a connector is provided on the side opposite to the outer skin 4 in the measuring portion 3c.
- the double-sided tape 92c has adhesiveness on both sides. One surface of the double-sided tape 92c is attached to the measuring section 3c. The double-sided tape 92c is attached to the skin 4 on the other side. Of the surfaces of the double-sided tape 92c, at least the surface that is to be attached to the skin 4 has adhesiveness similar to the adhesive portion 22 (FIG. 1) and can be attached to the skin 4 for a long time. Any material may be used as long as it is less likely to be affected by inflammation or the like. Although the adhesive portion 22 shown in FIG. 2 is omitted in the cross-sectional view shown in FIG. 9, an adhesive member with high air permeability is attached to the skin 4 including the electrode contact portion 210c of the connection portion 21c. ing.
- an air-permeable region R5 indicates a portion of the surface of the electrode 20c that is not in contact with the electrode contact portion 210c and is in contact with the epidermis 4.
- a breathable region R6 indicates a portion of the surface of the electrode 20c that is in contact with neither the electrode contact portion 210c nor the epidermis 4.
- a non-air-permeable region R7 indicates a portion of the surface of the electrode 20c that is in contact with the adhesive tape 91c.
- the non-air-permeable region R7 corresponds to the tape contact portion 202c overlapping the connecting portion 21c of the portion of the electrode 20c.
- the electrode 20c has air permeability.
- the connecting portion 21c does not have air permeability. Therefore, the electrode part 2c has air permeability in the air-permeable region R5 and the air-permeable region R6, but the electrode part 2 does not have air-permeability in the non-air-permeable region R7.
- the electrode part 2c and the epidermis 4 are electrically insulated by the adhesive tape 91c in the non-breathable region R7. Since the electrode portion 2c and the epidermis 4 are electrically insulated, the skin resistance of the epidermis 4 is not measured in the non-breathable region R7, which does not have air permeability, in the skin resistance measuring device 1c.
- the electrode part 2c further has an epidermis non-contact part (tape contact part 202c in this modified example) that is not in contact with the epidermis 4 .
- the non-skin contact portion (tape contact portion 202c in this modified example) and the connecting portion 21c have a region (non-breathable region R7 in this modified example) that overlaps with each other.
- the skin resistance measuring device 1c includes an insulating section (adhesive tape 91c in this modified example).
- the insulating portion (adhesive tape 91c in this modification) electrically connects the skin non-contact portion (tape contact portion 202c in this modification) and the skin 4 in the region (non-breathable region R7 in this modification). insulated to With this configuration, the skin resistance measuring device 1c can reduce the influence of the skin resistance measurement results of the region (the non-breathable region R7 in this modification) where the epidermis 4 does not dry naturally.
- FIG. 10 is a diagram showing an example of the application pattern of the DC voltage according to this embodiment.
- the measurement unit 3 applies a DC voltage for a predetermined period of time before measurement, and stops applying the DC voltage for a predetermined period of time after measurement. After that, the measurement unit 3 repeats the operation of applying the DC voltage for a predetermined time period, and stopping the application of the DC voltage for a predetermined time period after measurement.
- the measurement unit 3 starts applying a DC voltage of value V1 between the electrodes 20-1 and 20-2 at time T1. Measuring unit 3 applies a DC voltage of value V1 for five seconds from time T1 to time T2, and measures skin resistance at time T2. Immediately after measuring at time T2, the measurement unit 3 stops applying the DC voltage. When five seconds from time T2 to time T3 have elapsed, the measurement unit 3 starts applying the DC voltage at time T3. The measurement unit 3 applies a DC voltage of value V1 for five seconds from time T3 to time T4, and measures the skin resistance at time T4. Immediately after measuring at time T4, the measurement unit 3 stops applying the DC voltage. When five seconds from time T4 to time T5 have elapsed, the measurement unit 3 starts applying the DC voltage at time T5. The measurement unit 3 repeats the same operation thereafter.
- the measurement unit 3 does not apply voltage all the time, but applies voltage when necessary for measurement. Therefore, in the skin resistance measuring device 1, the power consumption of the battery 33 can be reduced as compared with the case where the voltage is constantly applied. Moreover, in the skin resistance measuring device 1, the influence of the voltage application to the epidermis 4 can be suppressed compared with the case where the voltage is constantly applied.
- the reason for measuring after applying a DC voltage for a certain period of time is as follows.
- the resistance of the skin has a resistance component and a capacitance component as described above.
- current flows to charge the capacitive component. Therefore, if the resistance value is calculated by dividing the applied voltage by the current value, the apparent resistance value decreases and the correct resistance value cannot be measured.
- a voltage is applied during a period in which the capacitance component is sufficiently charged, and then measurement is performed, whereby an accurate resistance value can be measured.
- the measurement unit 3 may be equipped with a detection circuit.
- the detection circuit detects whether the electrode 20 and the connection portion 21 are normally connected. Based on the detection result of the detection circuit, the data measured when the poor contact occurred or immediately after the poor contact occurred may be excluded from the measurement data.
- the sequence of measuring the resistance value after the voltage is applied for a certain period of time is described, but it is not limited to this.
- the resistance value may be measured at regular time intervals while applying the voltage continuously without providing a time to stop the application of the voltage. In this case, there is an advantage that the resistance value can be measured at short intervals compared to the case where the voltage application is provided with a pause time.
- the electrode 20 has a nanomesh structure in which gold is vapor-deposited on a fiber network of nanofibers as described above.
- FIG. 11 is a diagram showing an example of measurement results of changes in skin resistance over time according to the present example.
- the electrode 20 included in the skin resistance measuring device 1 is attached to the epidermis 4 of the measurement subject at time 0 minutes. Measurement was continuously performed for about 120 minutes. The room temperature at the time of measurement was 23.5 degrees and the humidity was 38 percent.
- the electrode 20 was dried for about 20 minutes. During this drying process, the electrode 20 was blown. After the drying was completed, the measurement operation was confirmed for about 20 minutes. In the process of confirming the measurement operation, the electrode 20 was sprayed with a very small amount of water at a predetermined cycle. Immediately after water was sprayed, the measured skin resistance decreased, and as it dried, the skin resistance increased. When the amount of water sprayed on the electrode 20 was reduced, the skin resistance did not decrease as compared to when the amount of water was not reduced.
- FIG. 12 shows the appearance of the skin resistance measuring device 1 attached to the epidermis 4 with the electrodes 20 covered with the film cover 5 .
- the epidermis 4 is the forearm of the person to be measured.
- the film cover 5 is, for example, a 50 ⁇ m thick polyethylene film.
- the electrode 20 is covered with the film cover 5
- the epidermis 4 is also covered with the film cover 5 to prevent water evaporation from the skin surface.
- skin resistance decreases immediately after electrode 20 is covered with film cover 5 .
- 10 minutes after covering the electrode 20 with the film cover 5 the film cover 5 was removed. Since the film cover 5 was removed, the natural evaporation of water from the skin resumed and the skin resistance began to increase.
- FIG. 13 is a diagram showing an example of measurement results of changes in skin resistance over time according to the present example.
- the first half shows the skin resistance change in the non-exercising state
- the latter half (period from the start of measurement to about 3 hours to 5 hours) is when exercising of skin resistance changes.
- a state of non-exercise is a state of not exercising. Exercise is, for example, performing 30 squats.
- the measurement method is common between the first half and the second half, and the skin resistance measuring device 1 is worn on the skin.
- the first half of the measurement and the second half of the measurement are continuously performed, and the total measurement time is 5 hours or longer. During the period from the start of the measurement results corresponding to the first half until about three hours have passed, the process of covering the electrode 20 with the film cover 5 and then removing it was repeatedly performed.
- FIG. 14 shows temporal changes in skin resistance obtained by extracting and enlarging the measurement results for a period of 1 hour to 2 hours from the start of measurement.
- covering the electrode 20 with the film cover 5 is indicated as “covering”
- removing the film cover 5 is indicated as “removing”.
- the skin resistance value after about 5 minutes have passed since the electrode 20 was covered with the film cover 5, and the skin resistance value increased as the film cover 5 was removed and water evaporated from the skin surface.
- the skin resistance values were stable between the minimum and maximum values.
- FIG. 15 is a diagram showing an example of changes in skin resistance that occur when the film according to this example is attached and detached.
- the change in skin resistance is considered to be a phenomenon related to water evaporation from the skin, and can be visualized in greater detail than before with the skin resistance measuring device 1 .
- FIG. 15 is an extracted and enlarged view of the measurement results for the period from 1 hour to 1.6 hours after the start of measurement among the measurement results shown in FIG. 13 .
- FIG. 16 is a diagram showing an example of sweating and drying processes due to exercise according to this embodiment.
- FIG. 16 shows the measurement results for a period from 3 hours to 4.6 hours after the start of measurement, extracted from the measurement results shown in FIG.
- the method of reducing skin resistance differs between when the electrode 20 is covered with the film cover 5 and when perspiration occurs due to exercise.
- the manner in which the skin resistance increases differs between the drying process due to evaporation of water from the skin after the film cover 5 is removed and the drying process after sweating due to exercise. During the drying process due to water evaporation from the skin, the skin resistance increases gradually with time. On the other hand, skin resistance increases in proportion to time during the drying process after perspiration due to exercise.
- the skin resistance measuring device 1 can be used in the case where the epidermis 4 is covered with the film cover 5 and then the dry process occurs due to moisture evaporation from the skin after the film cover 5 is removed, and in the case where the dry process occurs after sweating due to exercise. It is possible to measure the skin resistance with a high degree of accuracy that can distinguish how the resistance changes.
- FIG. 17 shows the external appearance of the skin resistance measuring device 1 attached to the epidermis 4 with the electrode 20 covered with the bandage 6 .
- a bandage is applied to the epidermis 4 at a position covering the electrode 20 .
- the bandage has a substantially square shape with a side of about 35 mm. Therefore, the size of the bandage is smaller than the size of the film cover 5 used in Example 1 described above.
- FIG. 18 is a diagram showing an example of measurement results of changes in skin resistance over time when the bandage 6 is applied to the epidermis 4 according to this embodiment.
- the arrows from “1 bandage” to “4 bandage” show the measurement results immediately after the adhesive bandage without adhesive layer was applied, and the arrows from "4 bandage with adhesive” to “6 bandage with adhesive” Shown are the measurement results immediately after applying a layered adhesive plaster.
- the adhesive plaster 6 was applied to the epidermis 4 and peeled off repeatedly. After the adhesive plaster 6 was applied, it was removed when the skin resistance was lowered and stabilized. After peeling off the adhesive plaster 6, the adhesive plaster 6 was applied again when the skin resistance increased and stabilized. From the measurement results shown in FIG.
- Adhesive bandages and film covers are examples of materials that are applied to the skin, and the skin resistance measuring device 1 can evaluate the effects of a wide variety of materials on the skin.
- Other examples of materials whose effects on the skin can be evaluated using the skin resistance measuring device 1 include gauze, cloth, clothing that covers the skin on a daily basis, and agents for protecting and moisturizing the skin. be.
- the moisturizing agent the skin resistance measuring device 1 has already evaluated the effect on the skin when a commercially available moisturizing agent or the like is applied directly onto the electrode 20 attached to the skin.
- FIG. 19 is a diagram showing an example of measurement results for verifying the reproducibility of the effect on skin resistance when the bandage 6 is applied to the epidermis 4 according to this embodiment.
- the measurement results shown in FIG. 19 in a period of 20 minutes to 90 minutes after the skin resistance measuring device 1 was attached to the epidermis 4, the operation of applying the bandage 6 so as to cover the electrode 20 and then removing it was repeated for 32 minutes. . This operation was repeated 10 times, and it can be seen from the change in skin resistance over time shown in FIG.
- FIG. 20 is a diagram showing an example of measurement results for verifying the reproducibility of the effect on skin resistance when the polyurethane film 7 is attached to the epidermis 4.
- the operation of attaching the polyurethane film 7 so as to cover the electrode 20 and then peeling it off was repeated from 112 minutes. rice field. This operation was repeated 10 times, and it can be seen from the changes in skin resistance over time shown in FIG.
- the measurement result of skin resistance using the skin resistance measuring device 1 is compared with the measurement result other than skin resistance using the skin measurement instrument to be compared.
- transepidermal water loss TEWL was measured as a measurement result other than skin resistance.
- FIG. 21 is a diagram showing an example of measurement results of skin resistance when the film cover 5 according to this embodiment is attached to the epidermis 4 so as to cover the electrodes 20 and then removed.
- FIG. 21 shows the measurement results for a period of 130 minutes to 140 minutes after the start of measurement.
- the film cover 5 is removed as described above, drying by transpiration begins.
- the skin resistance measurement result using the skin resistance measuring device 1 was compared with the TEWL measurement result using the skin measuring instrument for comparison.
- a period T17 corresponds to a drying process by evaporation after the film cover 5 is removed, and the length of the period T17 is about 140 seconds.
- FIG. 22 is a diagram showing an example of the measurement result of TEWL by a comparison target skin measuring instrument according to this example. It is a measurement result of a drying process by evaporation for 140 seconds after removing the film cover 5. FIG. It should be noted that when the film cover 5 is attached, measurement cannot be performed with the comparison target skin measuring instrument.
- FIG. 23 is a diagram showing an example of a comparison between the results of skin resistance measurement using the skin resistance measuring device 1 according to the present embodiment and the results of TEWL measurement using a comparison target skin measurement instrument. According to the measurement results shown in FIG. 23, it can be seen that there is a strong correlation between skin resistance and TEWL during the drying process due to transpiration.
- FIG. 24 shows the result of calculating the correlation coefficient for the correlation. The correlation coefficient was -0.90491.
- FIG. 25 shows the results of measuring the water content (arbitrary unit) of the stratum corneum using a comparison skin measuring instrument after removing the film cover 5 .
- FIG. 25 shows the results of measuring the water content (arbitrary unit) of the stratum corneum using a comparison skin measuring instrument after removing the film cover 5 .
- no significant trend was observed in the temporal change in the moisture content of the stratum corneum after the film cover 5 was removed and while the epidermis was transpiring. Therefore, it can be seen that there is no correlation between the skin resistance and the water content of the stratum corneum during the drying process by transpiration.
- FIG. 26 shows the measurement results of skin resistance when polyethylene (PE) with a thickness of 50 ⁇ m was used as a film cover covering the electrodes 20 .
- FIG. 27 shows measurement results of skin resistance when a 75 ⁇ m-thick polyurethane (PU) was used as a film cover covering the electrode 20 .
- the measurement subject is a male in his thirties.
- FIG. 28 shows the measurement results when the person to be measured is a man in his 60s and PE is used as the film cover.
- FIG. 29 shows the measurement results when the person to be measured is the man and PU is used as the film cover.
- the skin resistance tended to decrease as the operation of covering and removing the electrode 20 with the film cover was repeated. After 25 minutes from the start of measurement, the skin resistance did not increase again. The reason for this is thought to be that the person to be measured is prone to perspiration or has a skin disease.
- the person to be measured is talking or making a phone call while covering and removing the electrode 20 with the film cover. From the measurement results in FIG. 29, it can be seen that these conversations or actions such as phone calls affect the skin resistance.
- FIG. 30 shows the measurement results when the measurement subject is a woman in her 40s and PE is used as the film cover. The subject was often tense during the measurement, and the skin resistance decreased sharply in the tense state.
- arrows A26-1, A26-2, and A26-3 indicate the times when tension is assumed to have started.
- FIG. 31 shows the result of enlarging the measurement results included in the range R26 shown in FIG. 30 in the direction of the skin resistance value (that is, the direction of the vertical axis).
- FIG. 31 shows the range R26 shown in FIG. 30 divided into three ranges: range R26-1, range R26-2, and range R26-3. From FIG. 31, the skin resistance vibrates violently in the three ranges of range R26-1, range R26-2, and range R26-3, although the operation of covering and removing the electrode 20 with the film cover is not performed. It can be seen that
- the skin resistance measuring device 1 shows the possibility of estimating the state associated with individual tension and emotion from fine changes in skin resistance simply by simply attaching it to the skin of the forearm. I can say.
- FIG. 32 is a diagram showing an example of measurement results of skin resistance according to a comparative example of the present embodiment.
- the measurement results shown in FIG. 32 are obtained by removing the electrode 20 from the skin resistance measuring device 1 and directly contacting the connector of the measurement unit 3 with the epidermis 4 for measurement.
- the skin resistance value decreased with the passage of time, and did not return to the original value while remaining decreased. Since the electrode 20 was removed from the skin resistance measuring device 1 and the epidermis 4 was not naturally dried, it is considered that moisture such as sweat accumulated over time.
- FIG. 33 is a diagram showing an example of measurement results of skin resistance according to a comparative example of this embodiment.
- the measurement results shown in FIG. 33 are obtained by removing the electrode 20 from the skin resistance measuring device 1 and directly contacting the connector of the measurement unit 3 with the epidermis 4 for measurement.
- the film cover was attached to the epidermis 4 with the electrode 20 removed from the skin resistance measuring device 1 , the film cover was attached so as to cover the connector of the measurement unit 3 .
- FIG. 34 is a diagram showing an example of measurement results of skin resistance according to the present example.
- the measurement result shown in FIG. 34 is the measurement result when the skin resistance measuring device 1 is provided with the electrodes 20 .
- the downward arrow indicates the time when the film cover was applied to the outer skin 4, and the upward arrow indicates the time when the film cover was removed.
- the skin resistance measuring device 1 when the skin resistance measuring device 1 was provided with the electrode 20 having a structure in which the epidermis 4 naturally dries, the effect of the film cover on the skin resistance could be accurately measured.
- FIG. 33 when the connector of the measurement unit 3 is brought into direct contact with the epidermis 4 and the measurement is performed, the effect cannot be measured more accurately than the measurement results shown in FIG.
- the connector of the measurement unit 3 is directly contacted with the epidermis 4 for measurement, it is considered that moisture such as sweat accumulates over time, and the skin resistance value tends to decrease. , and is not stable compared to the measurement results shown in FIG.
- the skin resistance measuring device 1 has a degree of accuracy that can distinguish a state in which the person to be measured is talking, exercising, or in a tense state, etc., based on skin resistance. It can be seen that the skin resistance can be measured at That is, the skin resistance measuring device 1 can be sufficiently applied to determine the behavior and/or emotion of the person to be measured.
- a behavior/emotion determination method using the results of measurement by the skin resistance measuring device 1 has, for example, a wearing step, a measurement step, and a determination step.
- the electrodes 20 are attached to the skin of the person to be measured with an adhesive tape or the like, and the skin resistance measuring device 1 is worn by the person to be measured.
- the skin resistance between the electrodes 20 is measured by applying a DC voltage between the electrodes 20 .
- the behavior and/or emotion of the measurement subject is determined based on the skin resistance measured in the measurement step.
- the pattern of time-varying skin resistance and the content of behavior or emotion are associated in advance. Information indicating this correspondence is called pattern information.
- the determination step is performed by a determination device that is separate from the skin resistance measurement device 1.
- the skin resistance measuring device 1 outputs the skin resistance value measured in the measuring step to the determination device.
- the determination device stores pattern information, and determines the behavior and/or emotion of the measurement subject based on the information and the skin resistance value measured by the skin resistance measurement device 1 .
- the determination device is, for example, a smart phone, a personal computer (PC), a server, or the like.
- the skin resistance measuring device 1 When the skin resistance value is output, the skin resistance measuring device 1 and the determination device perform wireless or wired communication.
- the skin resistance measuring device 1 includes a communication module for communicating with the skin resistance measuring device 1 in the measurement unit 3 .
- the determination step may be performed by the skin resistance measuring device 1.
- the skin resistance measuring device 1 stores the program for executing the determination step and the pattern information in the memory 32 .
- the response ability of the skin to changes in the external environment and living behavior of the person to be measured may be evaluated using the results of measurement by the skin resistance measuring device 1 .
- the evaluation method of skin response ability by the skin resistance measuring device 1 has, for example, a wearing step, a measurement step, and an evaluation step.
- the wearing step and the measuring step are respectively the same as the wearing step and the measuring step of the behavior/emotion determination method described above.
- the evaluation step based on the skin resistance measured in the measurement step, the ability of the skin to respond to changes in the external environment and living behavior of the person to be measured is evaluated.
- the external environment includes temperature, humidity, climate, measurement location, measurement conditions, and the like.
- Changes in lifestyle behavior refer to various behaviors that occur in daily life, such as daily activities such as talking, making phone calls, and exercising, applying beauty products, skin care products, topical drugs, using skin patch sheets, putting on and taking off clothes, etc. It includes a wide range of actions such as sleeping and waking up.
- the responsiveness of the skin defined here is evaluated from changes in skin resistance. A change in skin resistance is indicated by an increase or decrease in skin resistance, a rate of change over time, or the like.
- the skin resistance measuring device 1 includes a pair of electrode units 2 provided on the epidermis 4 and a measuring unit 3 for measuring the skin resistance between the pair of electrode units 2.
- the pair of electrode parts 2 has a structure (a nanomesh structure in the present embodiment) that naturally dries on the epidermis 4 .
- the skin resistance measuring device 1 is provided on the epidermis when measuring the skin resistance by directly attaching a sensor such as the skin resistance measuring device 1 to the skin of the measurement subject. Since the electrode part has a structure in which the epidermis dries naturally, when the electrode is attached directly to the skin, it can be measured for a long time without inhibiting the natural evaporation of water from the skin.
- the skin resistance measuring device 1 according to the present embodiment can be used for a long period of time, and can measure various processes related to skin conditions such as the evaporation of water from the skin and the effects of changes in the external environment over time. With the skin resistance measuring device 1 according to the present embodiment, it is possible to continuously monitor the skin resistance value close to a natural state over a long period of time without restricting movement.
- the skin resistance value correlates with TEWL (transepidermal water loss), which is an important index of the skin barrier.
- TEWL transepidermal water loss
- the data measured in 1 are considered to be closely related to genetic elements and disease pathology, and are expected to be utilized as diagnostics and biomarkers.
- the skin resistance measuring device 1 includes a pair of electrode sections 2 provided on the epidermis 4 and a measurement section 3 that measures the skin resistance between the pair of electrode sections 2 .
- the electrode part 2 includes a skin contact part (electrode 20 in this embodiment) having a structure (a nanomesh structure in this embodiment) that naturally dries in the skin 4 in contact with the skin 4, and an electrode part. 2 and the measuring unit 3 are electrically connected to each other.
- the skin resistance measuring device 1 according to the present embodiment can absorb the external force by bending the connecting portion 21 when an external force is applied to the device, compared to the case where the connecting portion 21 is not provided. Not easy to break.
- the skin resistance measuring device 1 includes a pair of electrode portions 2 provided on the epidermis 4 and a skin resistance between the pair of electrode portions 2 by applying a DC voltage to the pair of electrode portions 2. and a measuring unit 3 for measuring.
- the pair of electrode parts 2 has a structure (a nanomesh structure in the present embodiment) that naturally dries on the epidermis 4 .
- the skin resistance measuring device 1 according to this embodiment can measure the DC resistance value of the skin, unlike the case where an AC voltage is applied.
- an electrode is provided on the epidermis of a measurement subject's forearm and measurement is performed, it is not restricted to this.
- the electrodes may be provided on the skin of other parts of the measurement subject's body.
- embodiment mentioned above demonstrated the example in case the measurement object of a skin resistance measuring device was a human, it is not restricted to this.
- the skin resistance measuring device may be attached to the skin of animals other than humans and used to measure skin resistance.
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Abstract
Description
本願は、2021年3月11日に、日本に出願された特願2021-039017号に基づき優先権を主張し、その内容をここに援用する。
以下、図面を参照しながら本発明の実施形態について詳しく説明する。
[皮膚抵抗計測装置の構成]
図1から図3を参照し、本実施形態に係る皮膚抵抗計測装置1の構成について説明する。図1は、本実施形態に係る皮膚に貼り付けられた皮膚抵抗計測装置1の外観の一例を示す図である。図1に示すように、皮膚抵抗計測装置1は、計測対象者の皮膚に直接貼り付けられて、皮膚抵抗の計測が行われる。皮膚抵抗計測装置1は、ウェアラブルな計測装置である。
なお電極20-1と電極20-2とは同じ構成であるため、以下の説明では、電極20-1と電極20-2とを区別しない場合には、電極20と称して説明を行う。
電極20では、上述したナノメッシュ構造を有することによって、表面追従性、横方向への伸張性、ガスや水分の透過性、透明性が高められている。
なお、電極20は、表皮4での乾燥が自然に行われる構造として、ナノメッシュ構造以外の構造を有してもよい。ここで表皮4での乾燥が自然に行われる構造の他の例を挙げる。
また、電極20は、表皮4での乾燥が自然に行われる構造として、電極20は、複数の穴を有してもよい。その場合、例えば、電極20は、複数のピンホールが設けられた箔状電極であってもよい。複数のピンホールの径、ピンホール同士の平均的な間隔、及びピンホールの数が、電極20の表皮4に接する面の開口率が所定以上となるように、複数のピンホールが箔状電極に設けられる。例えば、ピンホールの径は数十μm~数百μm、ピンホール同士の平均的な間隔は、0.1mm~1mmである。
図4に、本実施形態に係る電極20の表面積と皮膚抵抗との関係の一例を示す。図4では、電極20の表面積として電極20の外形から算出した値を示しているが、実際の電極の表面積は当該電極の外形の表面積に当該外形に占める電極の占有率を乗じて算出される。
接続部21は、電極20と計測部3とを電気的に接続する。接続部21は、接続部21-1と接続部21-2とから構成される。接続部21-1は、電極20-1と計測部3とを電気的に接続する。接続部21-2は、電極20-2と計測部3とを電気的に接続する。
なお接続部21-1と接続部21-2とは同じ構成であるため、以下の説明では、接続部21-1と接続部21-2とを区別しない場合には、接続部21と称して説明を行う。
なお、図2においては電極20と計測部3を電気的に接続する配線として接続部21を用いているが、接続部21を用いずに電極20を直接計測部3と電気的に接続させてもよい。
なお、接続部21は、接続部以外は絶縁材料で覆われているため表皮4と接する部分を有していてもよい。例えば、連結部211の一部が表皮4と接していてもよい。
皮膚抵抗計測装置1では、直流電圧を印加する。交流電圧を印加する場合は皮膚の容量成分と抵抗成分を含んだインピーダンスを測定することになり、皮膚の直流抵抗を直接測定することはできない。皮膚抵抗計測装置1では、交流電圧を印加する場合と異なり、直流電圧を印可することにより直接的に皮膚抵抗値の計測が可能となる。
基板30は、スイッチ31、メモリ32、バッテリ33、及び抵抗値を測定するための演算回路IC(不図示)を含む各種部品が電気的に接続されて配置される。基板30は、表皮4に接して設けられる。基板30は、一例として、縦23mm×横16mm程度のサイズである。皮膚抵抗計測装置1はウェアラブルな計測装置であるため、基板30のサイズは小さい方が好ましい。基板30のサイズが大き過ぎると、表皮4に貼り付けることが困難になってしまう。基板30は、一例として、ポリイミドフィルムなどフィルム基板である。基板30はフィルム基板であるため、表皮4に装着する際の装着のしやすさまたは皮膚変形への追随性を確保することができる。
メモリ32は、電極20に印加される電圧のオンとオフとの時系列のパターンを記憶する。また、メモリ32は、計測部3が測定する皮膚抵抗の値を時系列に記憶する。
バッテリ33は、スイッチ31がオンの状態である場合に計測部3に電力を供給する。
なお、図5に示す断面図では、図2に示した粘着部22は省略されているが、通気性の高い粘着部材が接続部21aのうち電極接触部210aを含んで表皮4に貼り付けられている。
図6は、本実施形態の変形例に係る皮膚抵抗計測装置1bの構成の一例を示す図である。図7は、本実施形態の変形例に係る皮膚に貼り付けられた皮膚抵抗計測装置1bの外観の一例を示す。図8は、本実施形態の変形例に係る皮膚抵抗計測装置1bの断面図の一例を示す図である。なお、図8では、図6に示したスイッチ31、メモリ32などの基板30上の部品は、まとめて回路部品34として示されている。
電極部2bは、電極20bと、接続部21bと、導電性スポンジ23bとを備える。
電極20bは、一対の電極である電極20b-1と電極20b-2とから構成される。なお電極20b-1と電極20b-2とは同じ構成であるため、以下の説明では、電極20b-1と電極20-2bとを区別しない場合には、電極20bと称して説明を行う。
非導電部分23b-3は、導電性を有さない。非導電部分23b-3は、発砲スポンジによって構成され、導電性を有する物質によるコーティングは施されていない。非導電部分23b-3は、導電部分23b-1と導電部分23b-2との間に配置され、導電部分23b-1と導電部分23b-2とを絶縁する。
つまり、接続部21bは、導電部分23b-1及び導電部分23b-2を介して、電極20bと計測部3とを電気的に接続する。
ケース8bの材料は、皮膚にダメージを与えにくい軟らかい材質を有するものであればいずれの材料であってもよい。ケース8bの材料は、一例として、シリコーン、所定以上の厚みを有するポリウレタン、発泡剤などである。
電極20cは、皮膚接触部200cと、連結部201cと、テープ接触部202cとから構成される。皮膚接触部200cと、連結部201cと、テープ接触部202cとはそれぞれ、薄い板状の形状である。
連結部201cは、皮膚接触部200cと、テープ接触部202cとを連結する。連結部201cは、表皮4からの高さが互いに異なる皮膚接触部200cとテープ接触部202cとを連結するため、屈曲した板状の形状を有する。
粘着テープ91cの材質は、粘着部22(図1)と同様に、粘着性を有して表皮4に長時間貼り付け可能であって、表皮4に炎症などの影響を与えにくい材質であればよい。粘着テープ91cは、通気性を有していることが好ましい。粘着テープ91cは、一例として、医療用のサージカルテープである。
なお、図9に示す断面図では、図2に示した粘着部22は省略されているが、通気性の高い粘着部材が接続部21cのうち電極接触部210cを含んで表皮4に貼り付けられている。
電極20cは通気性を有する。一方、接続部21cは通気性を有さない。そのため、電極部2cは、通気性領域R5及び通気性領域R6において通気性を有するが、電極部2は、非通気性領域R7において通気性を有さない。
この構成により、皮膚抵抗計測装置1cでは、表皮4での乾燥が自然に行われない領域(本変形例において、非通気性領域R7)の皮膚抵抗の計測結果への影響を小さくできる。
次に図10を参照し、電極20-1と電極20-2との間に印加される直流電圧のパターンについて説明する。図10は、本実施形態に係る直流電圧の印加のパターンの一例を示す図である。
計測部3は、計測の前に所定の時間だけ直流電圧を印加し、計測を行うと直流電圧の印加を所定の時間だけ停止する。以降、計測部3は、所定の時間だけ直流電圧を印加し、計測を行うと直流電圧の印加を所定の時間だけ停止するという動作を繰り返す。
図11は、本実施例に係る皮膚抵抗の時間変化の計測結果の一例を示す図である。図11に示す例では、時間0分において、皮膚抵抗計測装置1が備える電極20が計測対象者の表皮4に貼り付けられる。計測は、120分程度継続的に行われた。計測時の室温は、23.5度であり、湿度は38パーセントである。
図13は、本実施例に係る皮膚抵抗の時間変化の計測結果の一例を示す図である。図13では、前半(計測開始から3時間程度経過するまでの期間)は非運動の状態における皮膚抵抗変化を示し、後半(計測開始から3時間から5時間程度までの期間)は運動をしたときの皮膚抵抗変化を示している。非運動の状態とは、運動をしていない状態である。運動とは、一例として、スクワットを30回行うことである。前半と後半とでは計測方法は共通しており、皮膚抵抗計測装置1が皮膚に装着される。前半の計測と、後半の計測とは連続して行われ、計測時間は合計5時間以上である。前半に相当する計測結果開始から3時間程度経過するまでの期間において、電極20をフィルムカバー5によって覆った後に除去することを繰り返し実行した。
当該期間において、電極20がフィルムカバー5によって覆われて5分程度の時間が経過した後の皮膚抵抗の値と、フィルムカバー5が除去されて皮膚表面の水分蒸散に伴い皮膚抵抗の値が上昇した値とはそれぞれほぼ一定であり、最小値と最大値の間で皮膚抵抗の値は安定していた。
なお、計測開始から5時間以降は、計測対象者は当該計測に係る実験の片づけの作業を行った後に、休憩をした。
図15は、本実施例に係るフィルムの着脱時に生ずる皮膚抵抗の変化の一例を示す図である。当該皮膚抵抗の変化は皮膚からの水分蒸散に関する現象と考えられ、皮膚抵抗計測装置1で従来に比べて詳細に可視化することができる。図15は、図13に示した計測結果のうち計測開始から1時間から1.6時間までの期間の計測結果を抽出及び拡大したものである。図16は、本実施例に係る運動による発汗および乾燥過程の一例を示す図である。図16は、図13に示した計測結果のうち計測開始から3時間から4.6時間までの期間の計測結果を抽出したものである。
表皮に絆創膏またはポリウレタンフィルムを貼った場合に、皮膚抵抗に現れる影響について評価を行った。
図17は、電極20が絆創膏6によって覆われた状態で表皮4に取り付けられた皮膚抵抗計測装置1の外観を示す。絆創膏は、電極20を覆う位置において表皮4に貼られている。当該絆創膏は、1辺が約35mmの略正方形の形状である。したがって、絆創膏の大きさは、上述した実施例1において用いたフィルムカバー5の大きさに比べて小さい。
次に電極20を覆うフィルムカバーの材質の違い、あるいは計測対象者の体質の違いが皮膚抵抗へ与える影響について調べた実施例について説明する。
図26及び図27に示す計測結果では、フィルムカバーの材質の違いによって皮膚が受ける刺激が互いに異なり、皮膚からの水分蒸散の過程に違いが出た可能性がある。
図28に示す測定結果では、フィルムカバーで電極20を覆って取り除く操作を繰り返すにつれて、皮膚抵抗は次第に減少する傾向がみられた。計測開始後25分以降は、皮膚抵抗が再び増加することはなかった。計測対象者の発汗しやすい体質であること、あるいは皮膚疾患を有していることなどが理由と考えられる。
電極20が表皮4での乾燥が自然に行われる構造を有していることの効果を確認するため、比較例として皮膚抵抗計測装置1から電極20を除去して計測を行った。
図32は、本実施例の比較例に係る皮膚抵抗の計測結果の一例を示す図である。図32に示す計測結果は、皮膚抵抗計測装置1から電極20を除去して、計測部3のコネクタを表皮4に直接接触させて計測を行った結果である。図32に示すとおり、時間の経過とともに皮膚抵抗の値は減少し、減少したまま元の値には戻らなかった。皮膚抵抗計測装置1から電極20が除去されており表皮4での乾燥が自然に行われなかったため、時間とともに汗などの水分が蓄積したと考えられる。
生活行動変化とは、日常生活において行われる種々の行動に関する内容であり、会話や電話、運動を含む日常動作、美容・スキンケア用品・外用薬剤の塗布や皮膚貼付シートの使用、衣服等の着脱、睡眠・起床等の行為を広範に含む。
ここで定義する皮膚の応答能は、皮膚抵抗の変化から評価される。皮膚抵抗の変化の様子は、皮膚抵抗が増加、または減少すること、時間についての変化率などによって示される。
まず図11と図29とを参照して、生活行動変化に対する皮膚の応答能の評価について説明する。図11に示した会話が行われている期間(50分から90分の間)の計測結果、または図29に示した会話や電話が行われている期間の計測結果から、会話などの行動変化により一時的に皮膚抵抗が減少していることがわかる。
以上の様に、皮膚抵抗計測装置1による計測結果を用いて外部環境や生活行動変化に対する皮膚の応答能を評価できる。
以上に説明したように、本実施形態に係る皮膚抵抗計測装置1は、表皮4上に設けられる一対の電極部2と、一対の電極部2間の皮膚抵抗を計測する計測部3とを備える。一対の電極部2は、表皮4での乾燥が自然に行われる構造(本実施形態において、ナノメッシュ構造)を有する。
本実施形態に係る皮膚抵抗計測装置1は、長時間使用可能であり、皮膚からの水分蒸散や外部環境の変化に対する影響など皮膚状態に関する様々な過程を経時的に測定できる。本実施形態に係る皮膚抵抗計測装置1では、行動制限をすることなく長時間に渡り、自然な状態に近い皮膚の抵抗値を連続モニタリングすることが可能になる。
また、本実施形態に係る皮膚抵抗計測装置1で計測されるデータと他のマルチモーダル臨床情報とを関連づけて解析することで、これまで侵襲的にしか知り得なかった診断用またはモニタリング用のバイオマーカーが非侵襲的な計測により評価可能になると期待される。環境変化に対する皮膚の応答能を評価することにより、疾患発症や皮膚状態の悪化を予測すること、さらに予測の結果に基づいて個別化スキンケア手法を提案することが期待されるまた、皮膚抵抗計測装置1で計測されるデータは、遺伝的要素や疾患病態とも密接に関わっていると考えられ、当該データを診断やバイオマーカーとして活用することが期待される。
この構成により、本実施形態に係る皮膚抵抗計測装置1は、自装置に外力が加わった場合に接続部21が撓むことによって当該外力を吸収できるため、接続部21を備えない場合に比べて破損しにくい。
この構成により、本実施形態に係る皮膚抵抗計測装置1は、交流電圧を印加する場合と異なり皮膚の直流抵抗値の計測が可能となる。
なお、上述した実施形態では、皮膚抵抗計測装置の計測対象が、ヒトである場合の一例について説明したが、これに限られない。皮膚抵抗計測装置は、ヒト以外の動物の皮膚に装着されて皮膚抵抗の計測に用いられてもよい。
Claims (16)
- 表皮上に設けられる一対の電極部と、
前記一対の電極部間の皮膚抵抗を計測する計測部と、
を備え、
前記一対の電極部は、前記表皮での乾燥が自然に行われる構造を有する
皮膚抵抗計測装置。 - 前記電極部は、繊維網を有する
請求項1に記載の皮膚抵抗計測装置。 - 前記電極部は、所定の間隔で配置された微細な線状の部材を有する
請求項1に記載の皮膚抵抗計測装置。 - 前記電極部は、ストライプ状の開口を有する
請求項1に記載の皮膚抵抗計測装置。 - 前記電極部は、クラックまたはピンホールが設けられた箔状の電極である
請求項1に記載の皮膚抵抗計測装置。 - 前記電極部は、表皮に接する面において吸収した水分を放出する構造を有する
請求項1に記載の皮膚抵抗計測装置。 - 表皮上に設けられる一対の電極部と、
前記一対の電極部間の皮膚抵抗を計測する計測部と、
前記電極部は、前記表皮に接触して前記表皮での乾燥が自然に行われる構造を有する表皮接触部と、前記電極部と前記計測部とを電気的に接続する接続部とを備え
を備える皮膚抵抗計測装置。 - 前記接続部は通気性を有する
請求項7に記載の皮膚抵抗計測装置。 - 前記表皮接触部の表面のうち前記接続部と接触している部分の面積は、前記接続部と接触していない部分の面積よりも小さい
請求項7または請求項8に記載の皮膚抵抗計測装置。 - 前記電極部と前記接続部との間には、通気性を有する導電性部材が挿入されている
請求項7から請求項9のいずれか一項に記載の皮膚抵抗計測装置。 - 前記電極部は、前記表皮に接触していない表皮非接触部をさらに有し、
前記表皮非接触部と前記接続部とは互いに重なる領域を有し、
前記領域において前記表皮非接触部と前記表皮とを電気的に絶縁する絶縁部をさらに備える
請求項7に記載の皮膚抵抗計測装置。 - 前記電極部と前記接続部とが接続されているか否かを検知する検知回路をさらに備える
請求項7から請求項11のいずれか一項に記載の皮膚抵抗計測装置。 - 表皮上に設けられる一対の電極部と、
前記一対の電極部に直流電圧を印加することによって前記一対の電極部間の皮膚抵抗を計測する計測部と、
を備え、
前記一対の電極部は、前記表皮での乾燥が自然に行われる構造を有する
皮膚抵抗計測装置。 - 前記計測部は、前記皮膚抵抗を計測する前の時期において所定の時間である第1時間だけ前記一対の電極部に直流電圧を印加した後に前記皮膚抵抗を計測し、所定の時間である第2時間だけ前記一対の電極部に直流電圧を印加することを休止する
請求項13に記載の皮膚抵抗計測装置。 - 計測対象の表皮上に設けられて当該表皮での乾燥が自然に行われる構造を有する一対の電極部間の皮膚抵抗を計測する計測ステップと、
前記計測ステップにおいて計測された前記皮膚抵抗に基づいて前記計測対象の外部環境や生活行動変化に対する皮膚の応答能を評価する評価ステップと
を有する皮膚の応答能の評価方法。 - 計測対象の表皮上に設けられて当該表皮での乾燥が自然に行われる構造を有する一対の電極部間の皮膚抵抗を計測する計測ステップと、
前記計測ステップにおいて計測された前記皮膚抵抗に基づいて前記計測対象の行動及びまたは情動を判定する判定ステップと
を有する行動情動判定方法。
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JPH053875A (ja) * | 1991-06-25 | 1993-01-14 | Matsushita Electric Ind Co Ltd | 発汗センサ |
JP2016112246A (ja) * | 2014-12-16 | 2016-06-23 | 国立研究開発法人科学技術振興機構 | 電子機能部材、電子部品及びウェアラブルデバイス |
JP2018110860A (ja) * | 2017-01-10 | 2018-07-19 | 電子部品研究院 | 皮膚伝導度測定センサー及びその製造方法 |
WO2020179907A1 (ja) | 2019-03-07 | 2020-09-10 | 国立大学法人 東京大学 | 電子機能部材及びその製造方法、並びに、生体測定センサ |
JP2021039017A (ja) | 2019-09-04 | 2021-03-11 | 公益財団法人鉄道総合技術研究所 | 運行情報提示装置及び運行情報提示方法 |
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JPH053875A (ja) * | 1991-06-25 | 1993-01-14 | Matsushita Electric Ind Co Ltd | 発汗センサ |
JP2016112246A (ja) * | 2014-12-16 | 2016-06-23 | 国立研究開発法人科学技術振興機構 | 電子機能部材、電子部品及びウェアラブルデバイス |
JP2018110860A (ja) * | 2017-01-10 | 2018-07-19 | 電子部品研究院 | 皮膚伝導度測定センサー及びその製造方法 |
WO2020179907A1 (ja) | 2019-03-07 | 2020-09-10 | 国立大学法人 東京大学 | 電子機能部材及びその製造方法、並びに、生体測定センサ |
JP2021039017A (ja) | 2019-09-04 | 2021-03-11 | 公益財団法人鉄道総合技術研究所 | 運行情報提示装置及び運行情報提示方法 |
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