JP2019088368A - Perspiration amount detection probe - Google Patents

Abstract

To provide a perspiration amount detection probe capable of measuring a perspiration amount without needing to send air from a perspiration meter body, whose size can be reduced.SOLUTION: A perspiration amount detection probe 1 includes in a housing capsule 2: an intake hole 11; a blower part 4 for sucking natural air from the intake hole 11 and blowing it; a first temperature and humidity sensor 5 for measuring the temperature and humidity of the natural air that the blower part 4 blows; an opening part 12 brought into contact with a skin surface; a first mixing chamber 13 provided on the downstream of the blower part 4 that communicates with the opening part 12 for dissipating perspiration on the skin surface and mixing the dissipated perspiration with the natural air; a second temperature and humidity sensor 7 for measuring the temperature and humidity in the first mixing chamber 13; an exhaust hole 14 for discharging the perspiration-mixed air of the perspiration and the natural air from the first mixing chamber 13; and a base plate 6 mounted with the first temperature and humidity sensor 5 on one surface and with the second temperature and humidity sensor 7 on the other surface.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a sweating amount detection probe for measuring the amount of sweating which is evaporated from the skin surface.

  Conventionally, a perspiration meter for measuring the amount of perspiration from the skin surface is, for example, as described in Patent Document 1, the perspiration meter main body in a state in which the probe (capsule) for detecting the amount of perspiration is in contact with the skin surface. Natural air (room air or outdoor air) is supplied to the interior space of the probe from a flexible pipe. In the probe, sweat from the skin surface and natural air are mixed, returned to the perspiration meter main body through the flexible pipe, and exhausted to the atmosphere. Two absolute humidity sensors, each measuring the humidity of natural air mixed with the moisture of natural air before being supplied to the internal space of the probe and the sweat of passing through the internal space, by two absolute humidity sensors in the perspiration meter body Calculate the output difference of and measure the amount of sweating.

JP 2001-61791 A

  In the perspiration meter of Patent Document 1, the perspiration meter main body and the probe are connected by two flexible pipes. Although flexible pipes are soft, they have a certain thickness (diameter) because they are air channels. Therefore, while setting of measurement, such as management of a flexible pipe, is complicated, there is a subject that a flexible pipe becomes obstructive in the middle of measurement. In addition, if the probe is large, there is a problem that it becomes an obstacle at the time of measurement.

  The present invention was made in order to solve the above-mentioned problem, and it is possible to detect sweat without blowing air from the perspiration meter main body, and to provide a sweat amount detection probe which can be miniaturized. To aim.

  A perspiration volume detection probe according to claim 1, which has been made to achieve the above object, comprises: an air intake hole; and an air blower for drawing in natural air from the air intake hole and blowing it. A first temperature / humidity sensor for measuring the temperature and humidity of the natural air blown by the blower, an opening attached to a skin surface, and a downstream side of the blower; A first mixing chamber in communication with the opening to dissipate sweat on the skin surface and mixing the dissipated sweat and the natural air, and for measuring the temperature and humidity in the first mixing chamber A second temperature / humidity sensor, an exhaust hole for exhausting the perspiration mixed air of the perspiration and the natural air from the first mixing chamber, and the first temperature / humidity sensor are mounted on one side. The second temperature and humidity sensor is mounted on the other side A plate, characterized in that it comprises a housing capsule.

  The perspiration amount detection probe according to claim 2 is the probe according to claim 1, wherein a ceiling portion of the first mixing chamber facing the opening portion is constituted by the substrate. Do.

  The sweating amount detection probe according to claim 3 is the probe according to claim 2, and the suction hole, the air blowing portion, the substrate, the first mixing chamber, and the opening portion are linearly arranged. It is characterized by being.

  The sweating amount detection probe according to claim 4 is the probe according to any one of claims 1 to 3, wherein the outer shape of the substrate is formed in a polygonal shape, and at least two sides of the substrate are lateral A flow path of the natural air flowing from the air blowing unit to the first mixing chamber is formed so that the natural air flows.

  The sweat amount detection probe according to claim 5 is the probe according to any one of claims 1 to 4, characterized in that an air filter is provided on the upstream side of the first temperature and humidity sensor. .

  The sweat amount detection probe according to claim 6 is the probe according to any one of claims 1 to 5, characterized in that the exhaust ability of the exhaust hole is lower than the intake ability of the intake hole.

  The sweat amount detection probe according to claim 7 is the probe according to any one of claims 1 to 6, characterized in that an air tube having an open end is connected to the air intake hole. .

  The perspiration amount detection probe according to claim 8 is the probe according to any one of claims 1 to 7, and a second mixing chamber connected to the exhaust port is provided in the first mixing chamber. It is characterized by

  The perspiration amount detection probe according to claim 9 is the probe according to any one of claims 1 to 8, and the skin is based on the measurement values of the first temperature and humidity sensor and the second temperature and humidity sensor. It is characterized by comprising an operation unit that calculates the amount of sweat on the surface.

  The sweat amount detection probe according to claim 10 is the probe according to any one of claims 1 to 9, and the calculation unit measures the first temperature / humidity sensor and the second temperature / humidity sensor. The amount of sweating is calculated by delaying the measured value of the first temperature / humidity sensor based on the delay time of

  The perspiration meter according to claim 11 is based on the measurement values of the first temperature / humidity sensor and the second temperature / humidity sensor output from the sweating amount detection probe according to any of claims 1 to 8. And a calculation unit for calculating the amount of sweat on the skin surface.

  The perspiration meter according to claim 12 is the perspiration meter according to claim 11, wherein the calculation unit is based on a delay time of measurement of the first temperature / humidity sensor and the second temperature / humidity sensor. A sweat rate meter characterized by delaying the measured value of the first temperature / humidity sensor to calculate the amount of sweating.

  The perspiration amount detection probe according to the present invention incorporates a blower that sucks in natural air and blows it, and also incorporates and incorporates the first temperature / humidity sensor and the second temperature / humidity sensor on a single substrate. The sweat can be detected without blowing air from the perspiration meter main body, and the size can be reduced.

  If the ceiling of the first mixing chamber is constituted by the substrate, the material of the housing capsule can be reduced. When the intake hole, the blower, the substrate, the first mixing chamber, and the opening are linearly arranged, the distance between the respective constituent members can be minimized, and the natural air flow path can be minimized without waste. As a result, the sweating amount detection probe can be further miniaturized.

  The outer shape of the substrate is formed in a polygonal shape, and a flow path of natural air flowing from the blower to the first mixing chamber is formed such that natural air flows along the side of at least two sides of the substrate. In this case, the flow resistance of natural air is reduced by thickening the flow path (increasing the cross section). If the flow resistance from the air blower to the first mixing chamber is small, natural air can be sufficiently supplied to the first mixing chamber even if a small air blower having a small air blowing capacity is used. It can be miniaturized more.

  When an air filter is provided on the upstream side of the first temperature / humidity sensor, even if the temperature / humidity around the perspiration amount detection probe suddenly changes, the influence can be mitigated, and the small perspiration amount detection probe Even accurate sweating can be measured.

  When the exhaust capacity of the exhaust port is lower than the intake capacity of the intake port, the amount of sweat contained in the sweat mixed air can be increased, so detection and measurement of sweat become easy, and a small amount of sweat detection probe Even sweat rate can be measured accurately.

  If an air tube with an open end is connected to the air intake hole, clothing may be worn from the air tube even if the perspiration detection probe is attached to the skin surface in a high humidity condition such as the inside of clothing. Since it is possible to take in natural air with low humidity such as the outside of the above, even a small perspiration detection probe can accurately measure perspiration.

  When the second mixing chamber connected to the exhaust port is provided in the first mixing chamber, the passage of the sweat mixed air becomes long, so that the sweat and the natural air can be well mixed, which is small in size Even the amount of sweat detection probe can accurately measure the amount of sweat.

  In the case of including a calculation unit that calculates the amount of sweating on the skin surface based on the measurement values of the first temperature and humidity sensor and the second temperature and humidity sensor, it is convenient because the amount of sweating can be output. When the calculation unit calculates the amount of sweat by delaying the measurement value of the first temperature and humidity sensor based on the delay time of the measurement of the first temperature and humidity sensor and the second temperature and humidity sensor, the surrounding area Even if the temperature and humidity change rapidly, the amount of sweat can be accurately measured. Even when the calculation unit is provided on the side of the perspiration meter, the amount of perspiration can be accurately measured.

It is a perspective view which decomposes | disassembles and shows typically the structure of the amount detection probe of perspiration which applies this invention. It is a side view of a sweat amount detection probe which applies the present invention. FIG. 3 is a cross-sectional view of the sweating amount detection probe shown in FIG. 2 taken along the line M-M. FIG. 4 is a cross-sectional view of the sweating amount detection probe shown in FIG. 3 taken along the line N-N. It is explanatory drawing which shows typically the use condition of the amount detection probe of perspiration to which this invention is applied. It is a block diagram which shows the structure of the signal processing circuit of the amount detection probe of sweating which applies this invention. It is an explanatory view for explaining delay time of a detection waveform of the 1st temperature-and-humidity sensor and a detection waveform of the 2nd temperature-and-humidity sensor. It is a longitudinal cross-sectional view which shows typically the use condition of another sweating amount detection probe to which this invention is applied. It is a longitudinal cross-sectional view which shows typically the use condition of another sweating amount detection probe to which this invention is applied. It is the YY sectional view taken on the line of the sweat amount detection probe shown in FIG. It is explanatory drawing of the flow path of the natural air of another sweating amount detection probe to which this invention is applied.

  Hereinafter, although the form for implementing this invention is demonstrated in detail, the scope of the present invention is not limited to these forms.

  The perspiration amount detection probes 1 and 1a to which the present invention shown in FIGS. 1 to 11 is applied include an intake hole 11, a blower 4 for sucking in natural air from the intake hole 11 and blowing the air, and a blower 4 First temperature / humidity sensor 5 for measuring the temperature and humidity of natural air, the opening 12 attached to the skin surface SK, and the downstream side of the blower 4; A first mixing chamber 13 in communication for dissipating sweat on the skin surface SK and mixing the dissipated sweat and natural air, and a second temperature for measuring the temperature and humidity in the first mixing chamber 13 A humidity sensor 7, an exhaust hole 14 for exhausting a sweat mixed air of perspiration and natural air from the first mixing chamber 13, and a first temperature / humidity sensor 5 are mounted on one side and the second temperature The substrate 6 on which the humidity sensor 7 is mounted on the other surface is It is obtain things.

  It is preferable that the ceiling portion of the first mixing chamber 13 facing the opening 12 be configured by the substrate 6. It is preferable that the intake hole 11, the blower 4, the substrate 6, the first mixing chamber 13 and the opening 12 be arranged in line on a straight line. The flow path 15 of the natural air flowing from the blower 4 to the first mixing chamber 13 so that the outer shape of the substrate 6 is formed in a polygonal shape and natural air flows along the sides of at least two sides of the substrate 6 Preferably, 15a is formed. Preferably, an air filter 3 is provided upstream of the first temperature and humidity sensor 5. It is preferable that the exhaust ability of the exhaust hole 14 be lower than the intake ability of the intake hole 11. It is preferable that an air tube 27 with an open end 28 at the tip end be connected to the intake hole 11. Preferably, a second mixing chamber 17 connected to the exhaust hole 14 is provided in the first mixing chamber 13.

It is preferable that the perspiration amount detection probes 1 and 1a include a calculation unit 30 that calculates the perspiration amount of the skin surface SK based on the measurement values of the first temperature and humidity sensor 5 and the second temperature and humidity sensor 7. The calculation unit 30 calculates the amount of sweat by delaying the measured value of the first temperature and humidity sensor 5 based on the delay time of the measurement of the first temperature and humidity sensor 5 and the second temperature and humidity sensor 7 Is preferred.
The details will be described below.

  FIG. 1 shows the structure of the perspiration volume detection probe 1 to which the present invention is applied in a disassembled state. FIG. 2 shows a side view of the sweating amount detection probe 1. FIG. 3 shows a cross-sectional view of the perspiration amount detection probe 1 shown in FIG. 2 taken along the line M-M. In FIG. 4, the N-N line sectional view of the sweating amount detection probe 1 shown in FIG. 3 is shown. FIG. 5 shows the state of use of the sweating amount detection probe 1.

  The perspiration amount detection probe 1 shown in FIGS. 1 to 5 integrally accommodates components in a small-sized casing capsule (casing case) 2. The perspiration amount detection probe 1 includes a casing capsule 2, an air filter 3, a blower 4, a first temperature / humidity sensor 5, a substrate 6, a second temperature / humidity sensor 7 and a microprocessor 8 (calculation unit 30). An intake hole 11, an opening 12, a first mixing chamber 13 and an exhaust hole 14 formed in the casing capsule 2 are provided.

  The housing capsule 2 is formed in a substantially cylindrical shape (as an example, a substantially cylindrical shape) whose upper end is closed. The housing capsule 2 is divided into an upper capsule 2a and a lower capsule 2b, for example. The upper capsule 2a and the lower capsule 2b are formed of a synthetic resin. The lower capsule 2b is formed in a substantially cylindrical shape (in this example, a substantially cylindrical shape), and the upper capsule 2a is formed to be a lid on the upper side of the lower capsule 2b.

  An air inlet 11 through which natural air flows is formed at the center of the upper portion (opposite to the skin surface SK) of the housing capsule 2 (upper capsule 2a). The intake hole 11 is formed to have a smaller diameter (small size) than the inner diameter (the size of the cylinder) of the cylindrical casing capsule 2.

  In the lower end (the skin surface SK side) of the housing capsule 2 (lower capsule 2b), an opening 12 to be attached (adhered) to the skin surface SK (see FIG. 5) is formed. An inner side of the casing capsule 2 is a first mixing chamber 13 so as to communicate with the opening 12. The first mixing chamber 13 is formed as a space which dissipates the sweat on the skin surface SK in a state of being in contact with the skin surface SK and mixes the dissipated sweat with natural air. The first mixing chamber 13 is provided on the downstream side of the blower unit 4. The sticking of the housing capsule 2 to the skin surface SK is performed by attaching, for example, a double-sided tape, an adhesive or a pressure-sensitive adhesive to the periphery of the opening 12.

The opening area of the opening 12 is, for example, 1 cm ² . When the unit of the amount of sweat on the skin surface SK is expressed in mg / cm ² · min, if the opening area of the opening 12 is 1 cm ² , the measured value of the amount of sweat is divided by the area and used as it is be able to.

  In the middle of the inner wall of the casing capsule 2 (lower capsule 2b), as an example, a plurality (four) of concaved to support the corner of the substrate 6 whose outer shape is a polygonal shape (a square shape as an example) A substrate support 41 is formed. On the upper side of the inner wall of the lower capsule 2b, a plurality (four) of air blower support portions 42 recessed to support the corner of the air blower 4 having a rectangular shape, for example, are formed. As shown in the figure, the substrate support portion 41 and the blower portion support portion 42 are arranged such that the substrate 6 and the blower portion 4 are arranged facing each other in a state rotated 45 degrees in the cylinder axis direction of the casing capsule 2. Is formed. Further, the substrate supporting portion 41 and the air blowing portion supporting portion 42 are formed such that the substrate 6 and the air blowing portion 4 are disposed with an opening. By inserting the substrate 6 to the substrate support 41 first from the upper end side of the lower capsule 2 b and then inserting the air blower 4 to the air blower support 42, the substrate 6 and the air blower 4 can be simplified to the lower capsule 2 b Can be attached to Fixing is performed by bonding or screws.

  The substrate 6 constitutes a ceiling of the first mixing chamber 13 (a ceiling facing the opening 12). As described above, since the material of the casing capsule 2 can be reduced by using the substrate 6 as the ceiling of the first mixing chamber 13 as well, the perspiration amount detection probe 1 (the casing capsule 2) can be miniaturized. can do. In the substrate 6, the first temperature / humidity sensor 5 is mounted on one surface (the surface on the side of the air blower 4) and the second temperature / humidity sensor 7 is on the other surface (the first mixing chamber 13 side). Is implemented in the As described above, by mounting the first temperature / humidity sensor 5 and the second temperature / humidity sensor 7 on a single substrate 6, the sweat amount detection probe is compared with the case where the first temperature / humidity sensor 5 and the second temperature / humidity sensor 7 are separately mounted on two substrates. 1 can be miniaturized.

  In the middle of the inner wall of the lower capsule 2b (the housing capsule 2), an exhaust hole 14 for exhausting a sweat mixed air of perspiration and natural air from the first mixing chamber 13 to the outside is formed. The exhaust hole 14 communicates with the first mixing chamber 13. Although an example in which one exhaust hole 14 is formed is shown, the number to be provided is arbitrary.

  Inside the upper capsule 2a, a recess (see FIG. 3) having substantially the same shape as the outer shape of the air blowing portion 4 is formed so that the upper side of the air blowing portion 4 is fitted. Further, the upper capsule 2 a is formed with a recess in which the air filter 3 is just fitted at a position communicating with the intake hole 11 above the air blowing portion 4. The air filter 3 is inserted into the upper capsule 2a, the upper capsule 2a is inserted into the lower capsule 2b in which the air blowing unit 4 is inserted, and the upper capsule 2a and the lower capsule 2b are fixed. The housing capsule 2) can be assembled easily.

  In the perspiration amount detection probe 1, the intake hole 11, the air filter 3, the blower 4, the substrate 6, the first mixing chamber 13 and the opening 12 are linearly arranged. When arranged in this manner, the distance between the respective constituent members can be arranged to be the shortest, and the flow path of natural air can be made the shortest without waste, so that the sweating amount detection probe 1 can be miniaturized.

  As shown in FIG. 4, a flow path 15 of natural air flowing from the blower unit 4 to the first mixing chamber 13 is formed so that natural air flows along the sides of at least two sides of the substrate 6. preferable. As in this example, it is more preferable that the natural air flow path 15 be formed beside the three sides of the substrate 6. It is more preferable that a plurality of independent flow paths 15 be formed as in this example. When the flow passage 15 is thickened (the cross section is enlarged) or the number of the flow passages 15 is increased as described above, the natural air flow resistance decreases. If the flow resistance (the total flow resistance of the flow paths 15, 15, 15) from the blower 4 to the first mixing chamber 13 is small, even if the small-sized blower 4 with a small blowing capacity is used, the first Since natural air can be sufficiently supplied to the mixing chamber 13, the perspiration amount detection probe 1 can be miniaturized.

  Preferably, an air filter 3 is provided upstream of the first temperature / humidity sensor 5. As in this example, when the air filter 3 is provided on the upstream side (between the intake hole 11 and the blower portion 4) than the blower portion 4, the flow resistance of natural air blown by the blower portion 4 can be obtained. It is more preferable because it does not occur.

  The air filter 3 prevents the inflow of dust formed of, for example, a sponge, a fiber, a paper or the like. The air filter 3 is not only provided to prevent the inflow of dust, but it diffuses and homogenizes the natural air taken in during passage to reduce the measurement error and accurately measure the amount of sweating. It is also provided to make it possible. The function will be described later.

  The blower unit 4 is, for example, an electric air fan, an air pump, or an air blower. The blower unit 4 sucks natural air from the intake holes 11 and blows the natural air to the first mixing chamber 13 provided on the downstream side of the blower unit 4.

  The first temperature and humidity sensor 5 is for measuring the temperature and humidity of the natural air blown by the blower 4. As described above, the first temperature and humidity sensor 5 is mounted on the surface of the substrate 6 on the side of the blower unit 4. It is preferable that the first temperature / humidity sensor 5 be disposed at a position of the substrate 6 that faces (faces) the blower unit 4.

  The second temperature and humidity sensor 5 is for measuring the temperature and humidity of the sweat mixed air in the first mixing chamber 13. As described above, the second temperature and humidity sensor 7 is mounted on the surface of the substrate 6 on the first mixing chamber 13 side. The second temperature / humidity sensor 5 is preferably disposed on the substrate 6 so as to be located at the center of the ceiling of the first mixing chamber 13 so that a well-mixed sweat mixed air can be applied. . It is preferable that the intake hole 11, the blower 4, the first temperature / humidity sensor 5, and the second temperature / humidity sensor 7 be arranged linearly.

  As the first temperature and humidity sensor 5, one in which a temperature sensor and a humidity sensor are integrally formed may be used, or one in which a temperature sensor and a humidity sensor are separately formed may be used. The same applies to the second temperature and humidity sensor 7.

  The substrate 6 is a printed circuit board on which printed wiring is formed on both sides. A microprocessor 8 is mounted on any surface of the substrate 6. The microprocessor 8 is connected to a first temperature and humidity sensor 5 and a second temperature and humidity sensor 7. The microprocessor 8 operates as an arithmetic unit 30. The electronic components such as the microprocessor 8 are preferably mounted on the surface of the substrate 6 on the side of the blower unit 4 with low humidity.

  The blower unit 4 is connected to the substrate 6 by an electrical wiring cable (not shown). It is preferable that the microprocessor 8 be configured to be able to control the flow rate of the natural air taken in by the blower 4 by controlling the operation of the blower 4.

  As shown in FIG. 5, the perspiration rate detection probe 1 and the perspiration meter main body 101 constitute a perspiration meter. The perspiration amount detection probe 1 is used by being connected to the perspiration meter main body 101 via a cable 110 which is a multi-core wire. The sweating amount detection probe 1 may be provided with a connector (not shown) for detachably connecting the cable 110. A plurality of perspiration volume detection probes 1 can be connected to the perspiration meter main body 101.

  The perspiration amount detection probe 1 outputs the measured perspiration amount to the perspiration meter main body 101 via the cable 110. The perspiration amount detection probe 1 operates by receiving power for operation from the perspiration meter main body 101 via the cable 110. In addition, the amount of sweat detection probe 1 can be connected to the setting computer 121 via the cable 110, and can configure updating and setting of operation programs for the microprocessor 8 and parameters for various operations. It is done.

  The perspiration meter main body 101 includes a display unit 102, a power supply unit 103, and a wireless communication unit 104 as an example. The perspiration meter main body 101 displays the perspiration amount measured by the perspiration amount detection probe 1 on the display unit 102. In addition, the perspiration meter main body 101 can output the perspiration amount measured by the perspiration amount detection probe 1 to an external device such as the external computer 121 or the like wirelessly via the wired or wireless communication unit 104. The wireless communication unit 104 is a known wireless communication device for data communication, such as wireless LAN, Bluetooth (registered trademark), for example. The perspiration amount detection probe 1 may be provided with a display unit 102 such as a small liquid crystal screen to display the perspiration amount and the like. The perspiration amount detection probe 1 may be provided with the wireless communication unit 104 so that the perspiration amount detection probe 1 may directly output the perspiration amount to the external device wirelessly. The perspiration amount detection probe 1 may be provided with a connector for connecting an external device, and the perspiration amount detection probe 1 may directly output the perspiration amount to the external device by wire.

  The power supply unit 103 supplies power for operation of each part of the sweating amount detection probe 1 (the air blower 4, a mounted component of the substrate 6, and the like). The power supply unit 103 may be a circuit that converts a commercial AC power supply (for example, commercial AC 100 V) into a DC voltage, or may be a battery. Note that, as the power supply unit 103, a known non-contact type power supply device for supplying power to the perspiration amount detection probe 1 in a non-contact (wireless) manner may be used. In this case, the sweating amount detection probe 1 may be provided with a corresponding non-contact type known power receiving device. In addition, the perspiration amount detection probe 1 may include a primary battery, a secondary battery, and a solar battery. What should be built into the amount of sweat detection probe 1 may be appropriately examined from the viewpoint of downsizing and the like.

  In FIG. 5, the flow path of the natural air when the perspiration amount detection probe 1 is operated is indicated by thick arrows and thick broken arrows. When the blower unit 4 operates, natural air is sucked from the intake holes 11 and is blown to the first mixing chamber 13 through the air filter 3, the blower unit 4, and the flow paths 15, 15, 15 (see FIG. 4) . The thick dashed arrows represent natural air passing through the flow path 15 on the back side of the paper surface of the substrate 6. Sweat and natural air are mixed in the first mixing chamber 13. The sweat mixed air is exhausted to the outside from the exhaust hole 14.

  The natural air blown into the first mixing chamber 13 passes on the skin surface SK of the opening 12 and is combined with the sweat dissipated from the skin surface SK. When natural air flows into the first mixing chamber 13 from the plurality of flow channels 15, 15 and 15 in a direction to collide with each other, the natural air collides with each other to cause a turbulent flow such as a vortex, so sweat and the natural air are favorably made. It can be mixed. Therefore, since the first mixing chamber 13 can be formed small, the sweating amount detection probe 1 (the housing capsule 2) can be miniaturized.

  It is preferable that the exhaust ability of the exhaust hole 14 be lower than the intake ability of the intake hole 11. If the exhaust capacity of the exhaust hole 14 is higher than the intake capacity of the intake hole 11, natural air (sweat mixed air) is quickly exhausted to the outside, and the amount of sweat contained in the sweat mixed air is small. Become. On the other hand, when the exhaust capability of the exhaust hole 14 is lower than the intake ability of the intake hole 11, natural air remains in the first mixing chamber 13 for as long as possible, and sweat contained in the sweat mixed air The amount of The larger the amount of sweat, the easier it is to detect sweat accurately, so the amount of sweat can be measured accurately.

  The temperature and humidity of the inhaled natural air are measured by the first temperature and humidity sensor 5. The temperature and humidity of the sweat mixed air in the first mixing chamber 13 are measured by the second temperature and humidity sensor 7.

  FIG. 6 shows a block diagram of the electrical signal processing of the sweat amount detection probe 1. The perspiration amount detection probe 1 includes a calculation unit 30 that calculates the perspiration amount of the skin surface SK based on the measurement values of the first temperature and humidity sensor 5 and the second temperature and humidity sensor 7. The calculation unit 30 calculates the amount of sweat by delaying the measured value of the first temperature / humidity sensor 5 based on the delay time of the measurement of the first temperature / humidity sensor 5 and the second temperature / humidity sensor 7 It is.

  The first temperature and humidity sensor 5 is composed of a first temperature sensor 21a and a first humidity sensor 22a. The second temperature and humidity sensor 7 is composed of a second temperature sensor 21 b and a second humidity sensor 22 b. The arithmetic unit 30 includes a first absolute humidity arithmetic circuit 31 a, a second absolute humidity arithmetic circuit 31 b, a delay circuit 32, and a differential amplifier 33. Arithmetic unit 30 is configured to be able to perform arithmetic by digital signal processing by microprocessor 8 as an example.

  The temperature measured by the first temperature sensor 21a and the humidity measured by the first humidity sensor 22a are respectively A / D converted and input to the first absolute humidity calculation circuit 31a, and the absolute humidity of natural air (First absolute humidity detection signal S1) is calculated. The first absolute humidity detection signal S1 output from the first absolute humidity calculation circuit 31a is delayed by a predetermined delay time by the delay circuit 32 and input to the inverting input terminal (-) of the differential amplifier 33. . The delay time will be described in detail later.

The temperature measured by the second temperature sensor 21b and the humidity measured by the second humidity sensor 22b are respectively A / D converted and input to the second absolute humidity calculation circuit 31b, and sweat and natural air The absolute humidity (the second absolute humidity detection signal S2) of the mixed air of perspiration is calculated. The second absolute humidity detection signal S2 output from the second absolute humidity calculation circuit 31b is input to the non-inverting input terminal (+) of the differential amplifier 33. The differential amplifier 33 calculates the difference between the absolute humidity of the natural air (first absolute humidity detection signal S1) and the absolute humidity of the sweat mixed air (second absolute humidity detection signal S2), and Output the amount of sweating. The differential amplifier 33 (microprocessor 8) calculates and outputs the amount of sweating on the skin surface SK in units of, for example, mg / cm ² · min.

  Next, the operation of the sweating amount detection probe 1 will be described.

[Setting of natural air flow rate and delay time]
Before performing the measurement, the flow rate (induction flow rate) of the natural air blown by the blower 4 is set in advance, and then the delay circuit 32 provided in the microprocessor 8 is connected to the first absolute humidity detection signal S1. The delay time is set to coincide with the rising time point of the second absolute humidity detection signal S2 (see FIG. 6). These settings are made by connecting the computer 121 (see FIG. 5) to the perspiration meter main body 101 or the perspiration amount detection probe 1 and recording operation parameters in the microprocessor 8 or its peripheral circuits.

  The setting adjustment of the flow rate and the delay time may be performed at the time of manufacture of the sweat amount detection probe 1 or at the time of adjustment before shipment, or may be performed before actual measurement. Once the proper flow rate and delay time are determined, the same kind of sweat rate detection probe 1 may be recorded as a fixed value at the time of manufacture.

  The flow rate (flow rate) of the natural air operates the blower unit 4 to operate the first temperature / humidity sensor 5 (the first temperature sensor 21a and the first humidity sensor 22a), the second temperature / humidity sensor 7 (the second temperature sensor). The temperature sensor 21 b and the second humidity sensor 22 b) may be appropriately set to such a flow rate that the temperature and the humidity can be favorably measured.

  FIG. 7 shows an explanatory diagram for explaining the delay time. In the figure, (a) is a temperature waveform detected by the first temperature sensor 21a, (b) is a humidity waveform detected by the first humidity sensor 22a, and (c) is a waveform of the first absolute humidity detection signal S1. (D) shows a temperature waveform detected by the second temperature sensor 21b, (e) shows a humidity waveform detected by the second humidity sensor 22b, and (f) shows a waveform of the second absolute humidity detection signal S2. There is. The figure shows an example in the case where the air filter 3 is not attached to the sweating amount detection probe 1.

  In the figure, for example, the waveform of each part when the temperature and the humidity of the natural air around the perspiration volume detection probe 1 change rapidly, as when a person blows on the perspiration volume detection probe 1, for example It is shown.

  For example, when a person blows on the amount of sweat detection probe 1, the temperature and humidity of the breath are higher than that of natural air, so as shown in (a) to (c) of FIG. The waveform of the humidity sensor 22a of the first absolute humidity detection signal S1 rises. The rising peak of each waveform is time A. It takes some time until this breath flows through the sweating amount detection probe 1 to the positions of the second temperature sensor 21b and the second humidity sensor 22b and is measured. Therefore, as shown in (d) to (f) of the figure, the rising peaks of the respective waveforms of the second temperature sensor 21b, the second humidity sensor 22b, and the second absolute humidity detection signal S2 become time B. The time difference between the measurement time A and the measurement time B is the delay time D. As described above, the delay time D is generated due to the time difference from the first temperature / humidity sensor 5 of the natural air flowing in the perspiration amount detection probe 1 to the second temperature / humidity sensor 7.

  Therefore, as shown in FIG. 6, the arithmetic unit 30 is provided with the delay circuit 32, and the first absolute humidity detection signal S1 is delayed by the delay time D by the delay circuit 32 to calculate the amount of sweating. The delay of the second absolute humidity detection signal S2 with respect to the first absolute humidity detection signal S1 can be eliminated, and the amount of sweating can be accurately calculated without a measurement error.

  For example, as shown in FIG. 7, the delay time D includes the first temperature sensor 21a, the first humidity sensor 22a, the first absolute humidity detection signal S1, the second temperature sensor 21b, and the second humidity sensor. 22b, while monitoring the waveform of each part of the second absolute humidity detection signal S2 with the computer 121 or the like, the sweat amount detection probe 1 may be breathed and measured. At this time, the opening 12 is closed with a tape or the like so as to prevent air leakage.

  In the conventional perspiration meter shown in Patent Document 1, the perspiration meter main body and the probe (capsule) are connected by a long flexible pipe, and natural air is supplied from the perspiration main body. Although there was a situation that breathed into the probe, there was not much of a situation that breathed into the perspiration meter body. Also, the perspiration meter body is larger than the probe, and the length of the air flow path from the suction hole of the perspiration meter body to the compressor and the length of the air flow path from the compressor to the tank provided with the temperature and humidity sensor are to some extent It was formed in length, and the tank was also formed widely. Therefore, even if the breath was blown to the perspiration meter body, the breath was diffused in the air flow path and the tank, so the temperature and humidity of the breath were hardly measured by the perspiration meter body. However, the sweating amount detection probe 1 according to the present invention is small in size, and the sweating amount detection probe 1 itself inhales, so there may be a situation where the surrounding environment such as blowing breath changes rapidly. A need has arisen to consider the impact.

  In addition, since the time difference (delay time) of the measurement time of the 1st temperature / humidity sensor 5 and the 2nd temperature / humidity sensor 7 changes with the flow rate (flow velocity) of natural air, when the flow rate is changed, delay time D Also need to change.

  By providing the air filter 3 upstream of the first temperature / humidity sensor 5, for example, the influence of rapid temperature / humidity fluctuations of the surrounding natural air due to breath or the like can be mitigated. When the air filter 3 is provided, the peak value of each waveform shown in FIG. 7 is reduced. The reason is considered to be that the natural air is equalized because the breath and the like are diffused when passing through the air filter 3. As the air filter 3, it is preferable to use one having a large volume or one having a large air flow resistance (pressure loss) so that breath or the like is easily diffused. However, the size and size reduction of the air filter 3 are in a trade-off relationship, and the air flow resistance and the flow rate of natural air are in a trade-off relationship. Therefore, an appropriate filter may be used.

[Measurement of sweat rate]
The amount of sweating is measured as follows. First, the zero point adjustment of the display unit 102 is performed. In this case, in a state where the opening 12 is closed with a tape or the like so as not to leak air, the blower 4 is driven to induce natural air at a constant flow rate (induction natural air). Then, a zero point adjustment switch (not shown) is pressed to adjust the difference in level between the first absolute humidity detection signal S1 and the second absolute humidity detection signal S2 to zero. As a result, the amount of sweating is displayed on the display unit 102 zero.

  After confirming that the amount of sweating is zero on the monitor of the display unit 102 by the above-described zero point adjustment, for example, as shown in FIG. 5, the sweating amount detection probe 1 is attached to the skin surface SK. In the first mixing chamber 13, natural air and perspiration from the skin surface SK are mixed. As described above, the exhaust capacity of the exhaust hole 14 is reduced and the flow paths 15, 15, 15 are provided in three directions, thereby increasing the concentration of sweat and causing turbulent flow such as vortices in natural air. It can be generated to mix sweat and natural air well.

  The temperature and humidity of natural air are measured by the first temperature sensor 21a and the first humidity sensor 22a, and the temperature and humidity of the sweat mixed air are measured by the second temperature sensor 21b and the second humidity sensor 22b. These are calculated into the amount of sweating by the calculation unit 30 (see FIG. 6).

  When the temperature and humidity of the natural air around the perspiration amount detection probe 1 fluctuate rapidly due to breath or the like, the air filter 3 mitigates the influence. Further, since the calculation unit 30 includes the delay circuit 32 that delays the first absolute humidity detection signal S1 by the delay time D, the rising of the first absolute humidity detection signal S1 and the second absolute humidity detection signal S2 Since the points in time coincide with each other, there is no error due to the difference in time of natural air flow, and accurate measurement values can be obtained.

The microprocessor 8 calculates and outputs the amount of sweat on the skin surface SK in units of mg / cm ² · min. The amount of sweating is output to the perspiration meter main body 101.

  The perspiration meter main body 101 causes the display unit 102 to display the amount of sweating on the skin surface SK in an analog or digital manner and outputs a sweating amount measurement signal by wire or wirelessly.

  As shown by a broken line in the perspiration meter main body 101 of FIG. 5, the perspiration meter main body 101 may be provided with the calculation unit 30, and the perspiration rate detection probe 1 and the perspiration meter main body 101 may constitute a perspiration meter. In this case, the amount of sweat detection probe 1 is a first temperature / humidity sensor 5 (a first temperature sensor 21a, a first humidity sensor 22a), a second temperature / humidity sensor 7 (a second temperature sensor 21b, a second The measured value of the humidity sensor 22 b) is output to the perspiration meter main body 101. The calculation unit 30 of the perspiration meter main body 101 calculates the amount of sweating on the skin surface SK based on the measurement values of the first temperature / humidity sensor 5 and the second temperature / humidity sensor 7 output from the sweating amount detection probe 1. The calculation unit 30 calculates the amount of sweat by delaying the measured value of the first temperature / humidity sensor 5 based on the delay time D of the measurement of the first temperature / humidity sensor 5 and the second temperature / humidity sensor 7. Just do it.

  As shown in FIG. 8, an air tube 27 having an open end may be connected to the air intake hole 11 of the sweating amount detection probe 1 at the tip end portion 28. The air tube 27 is a hollow flexible pipe or a rigid pipe through which air passes.

  The air tube 27 projects the tip end portion 28 from, for example, the clothes 201 to the outside to take in natural air on the outside side of the clothes 201. The end of the air tube 27 may be, for example, about 20 mm to 300 mm, as long as the tip end portion 28 can be taken out to the outside than the clothes 201.

  The perspiration amount detection probe 1 shown in the same figure is in contact with the skin surface SK on which the clothes 201 are worn. Since the sweat is dissipated from the skin surface SK, the space 203 in the clothing between the clothes 201 and the skin surface SK has a high humidity, and in some cases, the humidity may reach 100% (saturated water vapor amount). Once the humidity reaches 100%, it can not contain any more water.

  When the air tube 27 is not connected to the perspiration amount detection probe 1, the perspiration amount detection probe 1 sucks in natural air in the space 203 inside the clothes from the intake hole 11. If the humidity of the space 203 inside the clothes is close to saturation, the natural air taken by the perspiration detection probe 1 can not contain perspiration, so the perspiration can not be measured.

  By connecting the air tube 27 to the intake hole 11, natural air with lower humidity than the clothes 201 can be taken in. Therefore, even when the clothes 201 are worn and there is a large amount of sweating, sweating is caused. The quantity can be measured accurately. Further, even when the clothes 201 are not worn, the amount of sweating on the skin surface SK is large, and the humidity in the vicinity of the skin surface SK is high when the subject is stationary. Even in such a case, the amount of sweat can be accurately measured by connecting the air tube 27 and sucking in natural air from a position away from the skin surface SK.

  9 to 11 show another sweat amount detection probe 1a to which the present invention is applied. FIG. 9 shows a longitudinal sectional view of the sweating amount detection probe 1a. In FIG. 10, the YY sectional view taken on the line of the amount of sweat detection probes 1a shown in FIG. 9 is shown. FIG. 11 shows the flow path of natural air of the perspiration volume detection probe 1a. The same reference numerals are given to the configurations already described, and the detailed description will be omitted.

  The perspiration amount detection probe 1 a is provided with a second mixing chamber 17 connected to the exhaust hole 14 in the first mixing chamber 13.

  The perspiration amount detection probe 1a includes a casing capsule (casing case) 52, an inner capsule 53, a blower 4, an air filter 3, a first temperature and humidity sensor 5 (a first temperature sensor 21a and a first humidity sensor 22a). , Substrate 6, second temperature / humidity sensor 7 (second temperature sensor 21b and second humidity sensor 22b), microprocessor 8, intake hole 11, opening 12, opening 55, first mixing chamber 13, the second mixing chamber 17, the exhaust pipe 58 and the exhaust hole 14 are integrally provided.

  The housing capsule 52 is attached (sticked) to the skin surface SK, and is formed in a substantially cylindrical shape (a cylindrical shape as an example). The housing capsule 52 has an intake hole 11 formed on the upper side, and an opening 12 formed at the end of the cylinder (the lower end side in the drawing) to be in contact with the skin surface SK. An inner side of the casing capsule 2 is a first mixing chamber 13 so as to communicate with the opening 12. The first mixing chamber 13 is formed as a space which dissipates the sweat on the skin surface SK in a state of being in contact with the skin surface SK, and mixes the dissipated sweat and the inhaled natural air.

  Inside the housing capsule 52, a cylindrical internal capsule 53 is formed. The inner capsule 53 is formed concentric with the housing capsule 52. The inner capsule 53 is formed to be located above the opening 12 in the air. An inner opening 55 is formed at the end of the tube on the skin surface SK side of the inner capsule 53.

  The inside of the inner capsule 53 is a second mixing chamber 17. The second mixing chamber 17 is a space for further mixing sweat and natural air. A common ceiling of the first mixing chamber 13 and the second mixing chamber 17 facing the opening 12 is formed by the substrate 6. The first temperature / humidity sensor 5 is mounted on the upper surface side (blower unit 4 side) on the substrate 6, and the second temperature / humidity sensor 7 is mounted on the lower surface side (second mixing chamber side) ing. Further, a microprocessor 8 is mounted on the substrate 6.

  As shown in FIG. 10, a space (gap) is formed between the inner wall of the cylindrical casing capsule 52 and the outer wall of the inner capsule 53, and this space is a natural air flow path 15a. In FIG. 10, the position of the substrate 6 is virtually shown by a broken line. A flow path 15 a is formed so that natural air passes beside the four sides of the substrate 6. Moreover, since it is parted by the two exhaust pipes 58 and 58, two flow paths 15a and 15a are formed. Since the flow paths 15a and 15a can be formed to have a relatively wide cross-sectional area, the flow resistance of natural air can be reduced. Therefore, the small-sized air blower 4 can be used, and the sweating amount detection probe 1a can be miniaturized.

  An exhaust hole 14 is formed on the side surface of the housing capsule 52. An exhaust pipe 58 communicating with the exhaust hole 14 from the second mixing chamber 17 of the inner capsule 53 is provided. Although this example shows an example in which two pairs of exhaust holes 14 and exhaust pipes 58 are provided, the number may be arbitrary. It is preferable to form the exhaust capacity of the two exhaust holes 14, 14 smaller than the intake capacity of the intake hole 11.

  The housing capsule 52, the inner capsule 53 and the exhaust pipe 58 are made of, for example, a synthetic resin. The housing capsule 52 is appropriately divided and formed so that the air filter 3, the air blowing unit 4, the substrate 6 and the like can be attached.

  Inside the casing capsule 52, the blower unit 4 and the air filter 3 are disposed in this order so as to be located downstream of the intake hole 11. The blower unit 4 and the air filter 3 may be arranged in the reverse order.

  Since the intake hole 11, the air blower 4, the air filter 3, the substrate 6, the first mixing chamber 13, the second mixing chamber 17, and the opening 12 are linearly arranged, the distance between the members is It becomes smaller and can be miniaturized as a whole.

  In FIG. 11, the flow path of the natural air when the perspiration amount detection probe 1a is operated is indicated by a thick arrow. When the blower unit 4 operates, natural air is collected in the intake hole 11, the blower unit 4, the air filter 3, the first temperature / humidity sensor 5, the flow paths 15a, 15a, the first mixing chamber 13, the second mixing chamber 17 And the second temperature / humidity sensor 7, the exhaust pipe 58, and the flow path of the exhaust hole 14. By providing the second mixing chamber inside the first mixing chamber 13, the passage of the sweat mixed air becomes long and the passage is bent, so that the sweat and the natural air can be well mixed. Further, natural air having passed through the plurality of flow paths 15a and 15a collides in the first mixing chamber 13 to cause turbulent flow such as a swirl of air, so that sweat and natural air can be well mixed. The temperature and humidity of the well-mixed sweat mixed air are measured by the second temperature and humidity sensor 7. For this reason, the amount of sweat can be measured accurately.

  Since the second mixing chamber is provided inside the first mixing chamber 13, the perspiration volume detection probe 1a can be formed in a small size despite the fact that the passage of the sweat mixed air is lengthened.

  In the perspiration amount detection probes 1 and 1a, the substrate 6 is disposed at the position forming the ceiling of the first mixing chamber 13, but the first temperature / humidity sensor 5 hits natural air, As long as the temperature / humidity sensor 7 of 2 hits the sweat mixed air, it can be disposed at an arbitrary position. For example, the substrate 6 may be arranged to constitute the side wall of the first mixing chamber 13 so that the first temperature / humidity sensor 5 is exposed to the flow path 15, 15a side. In addition, although an example was shown in which the intake hole 11, the air blower 4, the air filter 3, the substrate 6, the first mixing chamber 13, the (second mixing chamber 17), and the opening 12 are linearly arranged, It may be arranged at a position out of the straight line.

  As is apparent from the above description, the sweating amount detection probes 1 and 1a of the present invention can be configured to be small and lightweight, and can accurately calculate the amount of sweating in outdoor sports, various work, commuting and work in the office. Measurement is possible and does not disturb the user's action. Also, by attaching a plurality of perspiration volume detection probes 1 and 1a to the skin, it is possible to measure the perspiration site difference at multiple points.

  1 / 1a: sweat detection amount detection probe; 2: housing capsule; 2a: upper capsule; 2b: lower capsule; 3: air filter; 4: air blower; 5: first temperature / humidity sensor; Second temperature and humidity sensor, 8 is a microprocessor, 11 is an intake port, 12 is an opening, 13 is a first mixing chamber, 14 is an exhaust port, 15 and 15a are flow paths, 17 is a second mixing chamber, 21a is a first temperature sensor, 21b is a second temperature sensor, 22a is a first humidity sensor, 22b is a second humidity sensor, 27 is an air tube, 28 is a tip, 30 is a computing unit, 31a is a first 1 absolute humidity calculation circuit, 31b a second absolute humidity calculation circuit, 32 a delay circuit, 33 a differential amplifier, 41 a substrate support, 42 a blower support, 52 a housing capsule, 53 an internal Capsule, 55 is an inner opening, 58 is an exhaust pipe, 01 is a perspiration meter main body, 102 is a display unit, 103 is a power supply unit, 104 is a wireless communication unit, 110 is a cable, 121 is a computer, 201 is a clothes, 203 is a space in clothes, A is a time, B is a time, D is a The delay time, S1 is a first absolute humidity detection signal, S2 is a second absolute humidity detection signal, and SK is a skin surface.

A perspiration volume detection probe according to claim 1, which has been made to achieve the above object, comprises: an air intake hole; and an air blower for drawing in natural air from the air intake hole and blowing it. A first temperature / humidity sensor for measuring the temperature and humidity of the natural air blown by the blower, an opening attached to a skin surface, and a downstream side of the blower; A first mixing chamber in communication with the opening to dissipate sweat on the skin surface and mixing the dissipated sweat and the natural air, and for measuring the temperature and humidity in the first mixing chamber A second temperature / humidity sensor, an exhaust hole for exhausting the perspiration mixed air of the perspiration and the natural air from the first mixing chamber, and the first temperature / humidity sensor are mounted on one side. The second temperature and humidity sensor is mounted on the other side A plate, provided in the housing capsule, a ceiling portion of the first mixing chamber opposite to the opening, characterized that you have been configured in the substrate.

The perspiration amount detection probe according to claim 2 is the probe according to claim 1 , and the suction hole, the blower, the substrate, the first mixing chamber, and the opening are linearly arranged. It is characterized by being.

Perspiration amount detection probe according to claim 3 are those according to claim 1 or 2, the outer shape of the substrate is formed in a polygonal shape, the natural air next to at least two sides of the substrate A flow path of the natural air flowing from the air blowing unit to the first mixing chamber is formed to flow.

The sweat amount detection probe according to claim 4 is the probe according to any one of claims 1 to 3 , characterized in that an air filter is provided on the upstream side of the first temperature and humidity sensor. .

Perspiration amount detection probe according to claim 5 is as described in any one of claims 1 to 4, perspiration amount detection probe across the exhaust capacity, the lower the intake capacity of the entire amount of perspiration detection probe It features.

The sweat amount detection probe according to claim 6 is the probe according to any one of claims 1 to 5 , characterized in that an air tube having an open end is connected to the air intake hole. .

Perspiration amount detection probe according to claim 7 are those described in any one of claims 1 to 6, in the first mixing chamber, the second mixing chamber connected to the exhaust hole is provided It is characterized by

The perspiration amount detection probe according to claim 8 is the probe according to any one of claims 1 to 7 , and the skin is based on the measurement values of the first temperature and humidity sensor and the second temperature and humidity sensor. It is characterized by comprising an operation unit that calculates the amount of sweat on the surface.

The sweat amount detection probe according to claim 9 is the probe according to claim 8 , and the operation unit is based on a delay time of measurement of the first temperature / humidity sensor and the second temperature / humidity sensor. And calculating the amount of sweating by delaying the measured value of the first temperature / humidity sensor.

The perspiration meter according to claim 10 is based on the measurement values of the first temperature / humidity sensor and the second temperature / humidity sensor output from the perspiration amount detection probe according to any of claims 1 to 7. And a calculation unit for calculating the amount of sweat on the skin surface.

The perspiration meter according to claim 11 is the perspiration meter according to claim 10 , wherein the calculation unit is based on a delay time of measurement of the first temperature / humidity sensor and the second temperature / humidity sensor. it characterized in that said first delaying a measurement of temperature and humidity sensor is for calculating the amount of perspiration.

Claims (12)

Intake holes,
An air blower for drawing in natural air from the air suction holes and blowing the air;
A first temperature and humidity sensor for measuring the temperature and humidity of the natural air blown by the blower section;
An opening that is in contact with the skin surface;
A first mixing chamber provided downstream of the blower, communicating with the opening to dissipate sweat on the skin surface, and mixing the dissipated sweat and the natural air;
A second temperature and humidity sensor for measuring the temperature and humidity in the first mixing chamber;
An exhaust hole for exhausting the perspiration mixed air of the perspiration and the natural air from the first mixing chamber;
The sweating amount detection probe according to claim 1, wherein the first capsule and the substrate are mounted on the other surface of the first temperature / humidity sensor and the other surface of the second temperature / humidity sensor. .   The sweat amount detection probe according to claim 1, wherein a ceiling portion of the first mixing chamber facing the opening portion is configured of the substrate.   The sweat amount detection probe according to claim 2, wherein the suction hole, the air blowing unit, the substrate, the first mixing chamber, and the opening are linearly arranged.   The outer shape of the substrate is formed in a polygonal shape, and the flow path of the natural air flowing from the blower to the first mixing chamber such that the natural air flows along the sides of at least two sides of the substrate The sweat amount detection probe according to any one of claims 1 to 3, wherein   The sweat amount detection probe according to any one of claims 1 to 4, wherein an air filter is provided on the upstream side of the first temperature and humidity sensor.   The sweat amount detection probe according to any one of claims 1 to 5, wherein the exhaust capacity of the exhaust port is lower than the intake capacity of the intake port.   The sweat amount detection probe according to any one of claims 1 to 6, wherein an air tube having an open end is connected to the air intake hole.   The sweat amount detection probe according to any one of claims 1 to 7, wherein a second mixing chamber connected to the exhaust port is provided in the first mixing chamber.   The arithmetic part which calculates the amount of sweating of the said skin surface based on the measured value of a said 1st temperature / humidity sensor and a said 2nd temperature / humidity sensor is provided, It is characterized by the above-mentioned. Perspiration volume detection probe.   The calculation unit calculates the amount of sweat by delaying the measurement value of the first temperature and humidity sensor based on the delay time of the measurement of the first temperature and humidity sensor and the second temperature and humidity sensor. The sweating amount detection probe according to any one of claims 1 to 9, characterized in that   The amount of sweating on the skin surface is calculated based on the measurement values of the first temperature / humidity sensor and the second temperature / humidity sensor output from the sweating amount detection probe according to any one of claims 1 to 8. A perspiration meter characterized by comprising a calculation unit.   The calculation unit calculates the amount of sweat by delaying the measurement value of the first temperature and humidity sensor based on the delay time of the measurement of the first temperature and humidity sensor and the second temperature and humidity sensor. The perspiration meter according to claim 11, characterized in that

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