JP6926657B2 - Measuring instrument and measuring method - Google Patents

Description

The present invention relates to a measuring instrument and a measuring method.

Conventionally, there is, for example, an oral moisture measuring device as a measuring device that a measurer holds by hand to measure an object (see, for example, Patent Document 1). This oral moisture measuring device has a capacitance type sensor, and the sensor is pressed against the measurement site to measure the moisture of the object (in the oral cavity).

International Publication No. 2004/028359

By the way, in the above-mentioned measuring instrument, the measurement result (measured value) may vary depending on the measurer. Therefore, it is required to stabilize the measurement result.
The present invention has been made to solve the above problems, and an object of the present invention is to provide a measuring instrument and a measuring method capable of suppressing variations in measurement results.

The measuring instrument that solves the above problems includes a pressure adjusting unit capable of delivering gas, a container portion having a vent and whose volume can be changed by the gas sent from the pressure adjusting portion through the vent, and the container portion. It is provided with a sensor unit that is attached to the container unit and can come into contact with the measurement target.

According to this configuration, the measurement surface of the sensor unit can be reliably brought into contact with the measurement target by the container unit whose volume can be changed by the pressure adjusting unit capable of delivering gas, and the variation in the measurement result can be suppressed.

In the above measuring instrument, the container portion is preferably a balloon.
According to this configuration, since the container portion is a balloon, the volume can be changed (expansion / contraction operation) according to the volume of the gas.

In the above measuring instrument, the pressure adjusting unit is preferably a piezoelectric pump.
According to this configuration, since the pressure adjusting unit is a piezoelectric pump, it is possible to easily finely adjust the amount of gas delivered to the inside of the container unit.

In the above measuring instrument, it is preferable to include a pressure measuring unit for measuring the pressure inside the container unit.
According to this configuration, it is possible to determine whether or not the measurement surface of the sensor unit is a predetermined pressing force with respect to the measurement target by measuring the pressure inside the container unit. Therefore, it is possible to adjust the pressure inside the container based on the measured value of the pressure inside the container so that the measurement surface has a predetermined pressing force with respect to the measurement target.

In the above measuring instrument, it is preferable that the container portion is provided with a sensing portion that senses the position of the measurement target.
According to this configuration, by providing the container unit with a sensing unit that senses the position of the measurement target, it is possible to detect whether or not the container portion is provided at a predetermined position (correct position) of the measurement target.

In the above measuring instrument, it is preferable that a plurality of the sensor units are provided.
According to this configuration, by providing a plurality of sensor portions, it is possible to arrange them in various directions with respect to the container portion. Therefore, for example, when the container portion is placed in the oral cavity for measurement, a plurality of positions in the oral cavity are provided. It becomes possible to measure the amount of water.

In the above-mentioned measuring instrument, the container portion has an easily deformable portion that can be deformed by a predetermined stress and a difficult-to-deformate portion that does not deform by the predetermined stress, and the sensor portion is attached to the difficult-to-deform portion. It is preferable to be worn.

According to this configuration, since the sensor portion is attached to the difficult-to-deform portion of the container portion, the amount of change in the difficult-to-deform portion is smaller than that of the easily deformable portion when the volume of the container portion changes, so that the sensor portion is a container. It is possible to prevent it from falling out of the part.

In the above measuring instrument, the friction coefficient on the surface of the easily deformable portion is preferably larger than the friction coefficient on the main surface of the sensor portion.
According to this configuration, the relative deviation of the main surface, which is the measurement surface of the sensor unit, with respect to the surface to be measured is suppressed, and the measured value at a desired position can be obtained.

In the above measuring instrument, it is preferable that the sensor unit measures at least one of the water content and the wetness.
According to this configuration, at least one of the water content and the wetness can be measured.

In the above measuring instrument, the sensor unit preferably measures at least one of tongue pressure, pH and temperature.
According to this configuration, at least one of tongue pressure, pH and temperature can be measured.

A measurement method for solving the above problems is a measurement method in which a delivery step of delivering gas from a pressure adjusting unit to a container unit and a sensor unit attached to the container unit are used to measure the water content, wetness, tongue pressure, and pH of the measurement target. , And a measurement step of measuring at least one of the temperatures.

According to this, it is possible to surely bring the measurement surface of the sensor unit into contact with the measurement target by the container portion whose volume can be changed by the pressure adjusting portion capable of delivering gas, and the variation of the measured value of the measurement target is suppressed. NS.

In the above measurement method, it is preferable to include an adjustment step for adjusting the internal pressure of the container portion within a predetermined range after the delivery step.
According to this, since the adjustment step for adjusting the internal pressure of the container portion to a predetermined range is provided after the delivery step, the variation in the measured value can be further suppressed.

In the above measurement method, it is preferable to include a determination step in which the measurement step is started after the position in the measurement object is determined to be the correct position by the sensing unit that senses the position in the measurement object.

According to this, since the measurement step is started after the sensing unit determines that the position on the measurement target is the correct position, the measurement at the correct position can be performed.
In the above measurement method, it is preferable to include a discharge step for discharging the gas in the container portion when the position of the measurement target by the sensing unit deviates from the correct position after the determination step.

According to this, when the position of the measurement target by the sensing unit deviates from the correct position after the determination step, the gas in the container unit is discharged, so that the measurement is performed in a state where the sensor unit is not located at the correct position. Can be restricted.

According to the measuring instrument and measuring method of the present invention, variations in measured values can be suppressed.

The schematic block diagram of the measuring instrument of 1st Embodiment. (A) and (b) are explanatory views for explaining the sensor unit. Top view of the measurement surface of the sensor unit. Explanatory drawing for demonstrating the usage form of a measuring instrument. The schematic block diagram of the measuring instrument of 2nd Embodiment. Schematic diagram of the measuring instrument of the modified example. Schematic diagram of the measuring instrument of the modified example. Schematic diagram of the measuring instrument of the modified example.

(First Embodiment)
Hereinafter, the first embodiment will be described. In the attached drawings, the components may be enlarged for easy understanding. The dimensional ratios of the components may differ from the actual ones or those in another drawing.

As shown in FIG. 1, the measuring instrument 1 is an oral moisture measuring instrument that measures, for example, the moisture in the oral cavity as a measurement target. The measuring instrument 1 has a main body 10 and a head portion 20 which is a separate product from the main body 10 and is connected to the main body 10.

The main body 10 includes a control unit 11, a pump 12, an exhaust valve 13, a calculation unit 14, a display unit 15, and an external output port 16.
The control unit 11 is electrically connected to the pump 12, the exhaust valve 13, and the like, and controls the operation of the pump 12 and the exhaust valve 13. Further, the control unit 11 includes, for example, a microcontroller.

The pump 12 delivers gas to a balloon 22 which will be described later and constitutes the head portion 20. The pump 12 is not particularly limited, but it is preferable to use a piezoelectric pump because it is easy to finely adjust the amount of gas delivered to the inside of the balloon 22. The pipe 17 connected to the pump 12 may be provided with a check valve for maintaining the pressure in the balloon 22 when the pump 12 is stopped.

The exhaust valve 13 is for discharging the gas in the balloon 22 to the outside. The exhaust valve 13 is not particularly limited, but for example, an electromagnetic valve (solenoid valve) can be used.

The display unit 15 displays various information such as the operating state of the measuring instrument 1 and the measurement result. For the display unit 15, for example, a liquid crystal display can be adopted.
The external output port 16 can output measurement data to, for example, another device connected to another device.

As shown in FIGS. 1 and 4, the head portion 20 includes a grip portion 21 that is long in one direction, an inflatable balloon 22 that is attached to the tip of the grip portion 21, and a sensor portion 23 that is attached to the balloon 22. And have.

The balloon 22 has a vent in a part thereof, and the pipe 17 is connected to the vent so that gas can flow in or out of the pump 12. Further, the balloon 22 has an easily deformable portion that can be deformed by a predetermined stress and a hard-deformable portion that is not deformed by a predetermined stress. Here, the mounting surface 22a of the sensor portion 23 of the balloon 22 is a difficult-to-deform portion, and the outer surface 22b other than the mounting surface 22a corresponds to the easily deformable portion. As a method for forming the easily deformed portion and the hardly deformed portion, it is possible to form the balloon 22 by changing the thickness and hardness of the balloon 22. Regarding the hardness, it is preferable that the easily deformable portion is less than 20 and the hard deformable portion is 20 or more. As a method for measuring hardness, an ISO (International Organization for Standardization) or a durometer based on the new JIS standard is used as a measuring instrument for evaluation. A load is applied to the needle-shaped indenter, and the hardness is quantified from the pushing depth of the indenter against the balloon 22. In addition, although it is ideal to define the easily deformable part and the hard-to-deform part as described above, by setting the hardness difference between the two to 5 or more, the relatively easy-to-deform part and the hard-to-deform part should be defined. Is also possible. Further, it is also possible to form an easily deformed portion and a hardly deformed portion by combining resins of several kinds of materials. For example, it can be formed from a resin obtained by combining one or more of natural rubber, polyamide, nylon resin, polyethylene, polyurethane, polyethylene terephthalate, silicon rubber, polyether blockamide, styrene resin and the like. The friction coefficient of the mounting surface 22a is larger than the friction coefficient of the measurement surface 30a of the sensor 30 of the sensor unit 23, which will be described later. As an example of the method of changing the coefficient of friction, the surface roughness can be adjusted by embossing the balloon 22.

The sensor unit 23 is provided with a sensor 30 and a control circuit (not shown) for controlling the sensor 30.
The sensor 30 has a flat measuring surface 30a. The sensor 30 is, for example, a capacitance type sensor. The sensor 30 has a flat plate shape. Further, the sensor 30 is preferably formed of a flexible substrate having flexibility. By adopting a flexible substrate having flexibility, the sensor 30 is easily deformed according to the shape of the measurement target, so that the contact property between the sensor 30 and the measurement target is improved, and the effect of improving the accuracy can be expected.

As shown in FIG. 3, a pair of electrodes 31a and 31b are provided on the measurement surface 30a of the sensor 30. The pair of electrodes 31a and 31b are formed in a comb-teeth shape, for example. The pair of electrodes 31a and 31b function as electrodes of a capacitor. That is, the measurement target facing the measurement surface 30a and the liquid on the surface thereof function as a dielectric for the pair of electrodes 31a and 31b. The capacitance values of the pair of electrodes 31a and 31b are values according to the amount of water in the liquid to be measured and the surface thereof.

The sensor unit 23 outputs a measurement signal corresponding to the water content to be measured to the calculation unit 14 of the main body 10 based on the capacitance value detected by the sensor 30. Here, the calculation unit 14 calculates the water content based on the measurement signal from the sensor unit 23, and outputs the calculation result to the control unit 11. The control unit 11 outputs the calculation result as a measurement result to the display unit 15. The calculation result in the calculation unit 14 is not limited to the water content, and the wetness that displays the water content stepwise may be calculated.

The calculation unit 14 has, for example, an oscillation circuit connected to the sensor 30. The oscillation circuit outputs a signal having a period (frequency) corresponding to the capacitance value of the sensor 30. The capacitance value of the sensor 30, that is, the water content of the measurement target can be measured by the number of pulses of this output signal (the number of pulses in a predetermined time). The oscillation circuit may be provided in the vicinity of the sensor 30 such as the grip portion 21.

2 (a) and 2 (b) show an example of the configuration of the sensor unit 23. The sensor 30 has a flat plate shape, and a support rod 32 is attached to a surface opposite to the measurement surface 30a. The support rod 32 is movably supported by the support portion 33 along a direction perpendicular to the measurement surface 30a, which is the main surface of the sensor 30. A spring 34 is arranged between the sensor 30 and the support portion 33, and the spring 34 urges the sensor 30 in a direction protruding from the sensor portion 23 (downward in FIG. 2A). ..

A switch 36 is attached to the support board 35. The switch 36 is turned on and off by the support rod 32 of the sensor 30. That is, as shown in FIG. 2B, the measurement surface 30a of the sensor 30 is brought into contact with the surface 51a of the tongue 51 in the oral cavity 50 to be measured, and the balloon 22 is gassed from the pump 12 in the oral cavity 50. Presses the sensor unit 23 toward the tongue 51 by inflating the balloon 22. When a predetermined load is applied to the measurement surface 30a of the sensor 30 by this pressing, the sensor 30 and the support rod 32 move against the urging force of the spring 34. By the movement of the support rod 32, the switch 36 is turned on and the measurement is started. Then, when the gas in the balloon 22 is discharged through the exhaust valve 13 to contract the balloon 22 and weaken the pressing force in the sensor unit 23, the sensor 30 and the support rod 32 move downward by the urging force of the spring 34. do. The movement of the support rod 32 turns off the switch 36.

Next, the operation of the above-mentioned measuring instrument 1 will be described.
As shown in FIGS. 2 and 4, the measuring instrument 1 of the present embodiment grips the grip portion 21 of the head portion 20, and the measurement surface 30a of the sensor 30 of the sensor portion 23 is placed in the oral cavity 50 of the person to be measured. It is brought into contact with the tongue 51.

Next, when a measurement button (not shown) provided on the measuring instrument 1 is pressed, the control unit 11 drives the pump 12 to send gas to the balloon 22 (delivery step). The measurement button may be provided on either the head portion 20 or the main body 10.

Then, the balloon 22 is inflated, and the measurement surface 30a of the sensor 30 is in contact with the tongue 51 with a constant (predetermined) pressing force. Then, as described above, the switch 36 is turned on and the measurement by the sensor 30 is started (measurement step). At this time, since the measurement surface 30a of the sensor 30 is in contact with the tongue 51 with a predetermined pressing force due to the expansion operation of the balloon 22, the variation of the measurement information by the sensor 30 is suppressed, and as a result, the measurement result is obtained. Variation can be suppressed.

When the measurement information is obtained by the sensor 30, the measurement information is output to the calculation unit 14 of the main body 10. The calculation unit 14 calculates the water content of the tongue 51 to be measured based on the measurement information by the sensor 30, and outputs the calculation result to the control unit 11. The control unit 11 outputs the calculation result as a measurement result to the display unit 15.

After that, for example, when a predetermined time elapses or a depressurization button (not shown) is operated, the control unit 11 controls the exhaust valve 13 to discharge the gas in the balloon 22 to the outside and contract the balloon 22. As a result, it is possible to prevent the balloon 22 from being blocked more than necessary, such as closing the airway when the balloon 22 is accidentally swallowed to the pharyngeal side.

As described above, according to the present embodiment, the following effects are obtained.
(1) The balloon 22 whose volume can be changed by the pump 12 capable of delivering gas makes it possible to reliably bring the measurement surface 30a of the sensor unit 23 into contact with the tongue 51, and the variation in the measurement result (measured value) is suppressed. NS.

(2) By adopting the balloon 22 as the container portion, the volume can be changed (expansion / contraction operation) according to the volume of the gas.
(3) By adopting a piezoelectric pump as the pump 12, it is possible to facilitate fine adjustment of the amount of gas delivered to the inside of the balloon 22. In addition, continuous control becomes possible. In addition, since unnecessary vibration can be suppressed, it is possible to suppress discomfort to the person to be measured.

(4) When the sensor portion 23 is attached to the mounting surface 22a corresponding to the difficult-to-deform portion in the balloon 22, the amount of change in the mounting surface 22a is the outer surface other than the mounting surface 22a when the volume of the balloon 22 changes. Since it is smaller than 22b, it is possible to prevent the sensor unit 23 from falling off from the balloon 22.

(5) The relative deviation of the measurement surface 30a of the sensor 30 with respect to the surface 51a of the tongue 51 is suppressed, and a measured value at a desired position can be obtained.
(Second Embodiment)
The second embodiment will be described below. In this embodiment, the same components as those in the first embodiment are designated by the same reference numerals, and some or all of the detailed description thereof will be omitted.

As shown in FIG. 5, the main body 10 includes a pressure sensor 61 for measuring the pressure inside the balloon 22. The pressure sensor 61 is connected to a pipe 17 connecting the pump 12 and the balloon 22, measures the pressure inside the balloon 22, and outputs the measurement result to the control unit 11.

The control unit 11 controls the pump 12 so that the pressure inside the balloon 22 by the pressure sensor 61 becomes a constant pressure.
Next, the operation of the above-mentioned measuring instrument 1 will be described.

The measuring instrument 1 of the present embodiment grips the gripping portion 21 of the head portion 20 and brings the measuring surface 30a of the sensor 30 of the sensor portion 23 into contact with the tongue 51 in the oral cavity 50 of the person to be measured.
Next, when a measurement button (not shown) provided on the measuring instrument 1 is pressed, the control unit 11 drives the pump 12 to send gas to the balloon 22. The measurement button may be provided on either the head portion 20 or the main body 10.

Then, the balloon 22 is inflated, and the measurement surface 30a of the sensor 30 is in contact with the tongue 51 with a constant (predetermined) pressing force (adjustment step). Then, as described above, the switch 36 is turned on and the measurement by the sensor 30 starts. At this time, the internal pressure of the balloon 22 is measured by the pressure sensor 61. Then, the control unit 11 controls the pump 12 so that the pressure in the balloon 22 by the pressure sensor 61 becomes a constant pressure. Since the measurement surface 30a of the sensor 30 is in contact with the tongue 51 with a predetermined pressing force, the variation in the measurement information by the sensor 30 can be suppressed, and as a result, the variation in the measurement result can be suppressed.

When the measurement information is obtained by the sensor 30, the measurement information is output to the calculation unit 14 of the main body 10. The calculation unit 14 calculates the water content of the tongue 51 to be measured based on the measurement information by the sensor 30, and outputs the calculation result to the control unit 11. The control unit 11 outputs the calculation result as a measurement result to the display unit 15.

After that, for example, when a predetermined time elapses or a depressurization button (not shown) is operated, the control unit 11 controls the exhaust valve 13 to discharge the gas in the balloon 22 to the outside and contract the balloon 22. As a result, it is possible to prevent the balloon 22 from being blocked more than necessary, such as closing the airway when the balloon 22 is accidentally swallowed to the pharyngeal side.

As described above, according to the present embodiment, the following effects are exhibited in addition to the effects (1) to (5) of the first embodiment.
(6) By measuring the pressure inside the balloon 22, it is possible to determine whether or not the measurement surface 30a of the sensor unit 23 has a predetermined pressing pressure on the tongue 51 to be measured. Therefore, it is possible to adjust the pressure in the balloon 22 based on the measured value of the pressure in the balloon 22 so that the measurement surface 30a has a predetermined pressing force on the tongue 51.

In addition, the said embodiment may be carried out in the following aspects.
-In each of the above embodiments, the sensor unit 23 is provided with a switch 36, and the measurement by the sensor 30 is started when the switch 36 is turned on, but the present invention is not limited to this. For example, a configuration may be adopted in which the balloon 22 is inflated and the measurement by the sensor 30 is started when the internal pressure of the balloon 22 becomes a constant pressure. With such a configuration, in addition to the switch 36, the support rod 32, the support portion 33, the spring 34, and the like can be omitted. That is, the number of parts can be reduced. In such a configuration, the oscillation circuit may be provided on the main body 10 side of the calculation unit 14 or the like, or on the head unit 20 side (near the sensor 30) of the grip unit 21 or the like as in the above embodiment. ..

-As shown in FIG. 6, a configuration in which the sensing unit 71 is provided in addition to the sensor unit 23 may be adopted. For example, the sensing unit 71 is arranged close to (adjacent to) the sensor unit 23, and the sensing unit 71 senses a position on the measurement target. Then, for example, if the sensor unit 71 does not detect contact with the mucous membrane, the control unit 11 determines that the sensor unit 23 is not sufficiently in contact with the measurement target (tongue 51) and does not start the measurement. do. Thereby, the measurement accuracy can be further improved.

In such a configuration, for example, as shown in FIG. 7, in a state where the balloon 22 is inflated to a constant pressure, the balloon 22 is further raised by the tongue 51 and brought into contact with the palate 52 to bring it into contact with the sensor unit. A weight is applied to the measurement surface 30a of the 23. In the middle of the process, the internal pressure of the balloon 22 becomes a constant pressure higher than the constant pressure, and when the sensor unit 71 determines that the sensor unit 23 is evenly in contact with the mucous membrane of the tongue 51, the control unit 11 determines. A configuration may be adopted in which the measurement is started by the sensor unit 23.

As an example of the sensing unit 71, an electrode portion or the like capable of detecting electrical changes such as electric resistance value, impedance, capacitance and frequency by contact with the mucous membrane may be provided together with the balloon 22 as a sensing unit. Conceivable.

Further, as an example of the sensing unit 71, it is conceivable to adopt one using light. The sensing unit 71 includes, for example, a light source, a light guide plate provided around the sensor unit 23 of the balloon 22, and a light receiving unit that receives light propagating in the light guide plate.

As the light source, for example, an LED, a laser, a VCSEL, or the like can be adopted. The light receiving unit is composed of, for example, a photodiode or a phototransistor.
As an example of the arrangement of the light source and the light receiving portion, there is a configuration in which the light source is provided at one end of the light guide plate and the light receiving portion is provided at the other end opposite to the light source. It is also possible to separately provide an optical path between the light guide plate and the light source, or to separately provide an optical path between the light guide plate and the light receiving portion so as to be separated from the end portion of the light guide plate. Further, it is also possible to adopt a configuration in which a light receiving portion is provided at the end portion on the light source side by providing a reflecting portion such as a reflector at the end portion of the light guide plate opposite to the light source to reflect light.

The light guide plate is made of a translucent material (for example, translucent plastic such as polycarbonate or acrylic, glass, etc.). The light guide plate propagates light to the light receiving portion side by totally reflecting light at the interface between the light guide plate and air by utilizing the magnitude of the difference in refractive index between the light guide plate and air.

Here, when the mucous membrane (salmon) of the tongue 51 to be measured adheres to the light guide plate, the difference in the refractive index between the light guide plate and the mucous membrane is smaller than the difference in the refractive index between the light guide plate and the air, so that the interface between the light guide plate and the mucous membrane Total internal reflection does not occur, and the light propagating through the light guide plate leaks to the mucosal side. That is, the amount of light propagating through the light guide plate is reduced. Therefore, the amount of light measured by the light receiving unit is reduced. The light receiving unit is, for example, electrically connected to the control unit 11 on the main body 10 side and outputs the amount of light received by the control unit 11 as a measured value. For example, when the amount of decrease in the amount of received light measured by the light receiving unit exceeds a preset threshold value, the control unit 11 determines that the sensor 30 is located at the correct position (determination step), and starts the measurement by the sensor 30. ..

After that, when the amount of decrease in the amount of light received in the light receiving unit becomes equal to or less than the threshold value, the control unit 11 detects an abnormality as if the sensor 30 is not located at the correct position. When the control unit 11 senses that there is an abnormality, the control unit 11 discharges (degasses) the gas in the balloon 22 via the exhaust valve 13. In this way, when the balloon 22 deviates from the correct position and is detected as abnormal, the gas in the balloon 22 is discharged, so that the measurement in the state where the sensor unit 23 is not located at the correct position can be restricted.

By providing the light guide plate and the light receiving portion at a plurality of places with respect to the balloon 22, the position on the measurement target can be sensed from the change in the light receiving amount at the plurality of places. Further, in a single light guide plate, the light propagation direction is diffused in a plurality of places in the light guide plate, and a light receiving portion is provided so as to correspond to each place. Can sense the position in.

-In the above embodiment, the water content is measured by the sensor unit 23, but at least one of pH, temperature, and tongue pressure may be measured.
-In the above embodiment, a plurality of sensor units 23 are provided, but the present invention is not limited to this, and a plurality of sensor units may be provided.

As shown in FIG. 8, a sensor portion 90 that abuts on the palate 52 is attached to the balloon 22 in addition to the sensor portion 23 that abuts on the tongue 51. The sensor unit 90 measures the water content and the degree of wetness of the palate 52 mucous membrane. By providing a plurality of sensor units 23 and 90 in this way, it is possible to arrange them in various directions with respect to the balloon 22. Therefore, for example, when the balloon 22 is placed in the oral cavity 50 for measurement, the plurality of sensor units 23 and 90 are provided in the oral cavity 50. It is possible to measure the amount of water at the position of. Further, a configuration may be adopted in which the sensor unit 23 is provided on the left and right cheeks in the oral cavity 50.

-The above embodiment and each modification may be combined as appropriate.

1 ... Measuring instrument, 12 ... Pump (pressure adjusting part), 22 ... Balloon (container part), 22a ... Mounting surface (difficult to deform part), 22b ... Outer surface (easily deformed part), 23 ... Sensor part, 30a ... Measuring surface (Main surface), 61 ... Pressure sensor (pressure measuring unit), 71 ... Sensing unit, 90 ... Sensor unit.

Claims (12)

A pressure regulator that can send out gas,
A container portion having a vent and whose volume can be changed by a gas sent from the pressure adjusting portion through the vent, and a container portion.
A sensor unit that is attached to the container unit and can come into contact with the measurement target,
Equipped with a,
The container portion has an easily deformable portion that can be deformed by a predetermined stress and a hard-deformable portion that is not deformed by the predetermined stress.
The sensor unit is a measuring instrument that is attached to the difficult-to-deform unit. The measuring instrument according to claim 1, wherein the container portion is a balloon. The measuring instrument according to claim 1 or 2, wherein the pressure adjusting unit is a piezoelectric pump. The measuring instrument according to any one of claims 1 to 3, further comprising a pressure measuring unit for measuring the pressure in the container unit. The measuring instrument according to any one of claims 1 to 4, wherein the container unit is provided with a sensing unit that senses a position on a measurement target. The measuring instrument according to any one of claims 1 to 5, wherein a plurality of the sensor units are provided. The measuring instrument according to any one of claims 1 to 6, wherein the friction coefficient on the surface of the easily deformable portion is larger than the friction coefficient on the surface of the sensor portion. The measuring instrument according to any one of claims 1 to 7 , wherein the sensor unit measures at least one of a water content and a wetness. The measuring instrument according to any one of claims 1 to 8 , wherein the sensor unit measures at least one of tongue pressure, pH and temperature. A delivery step to send gas from the pressure adjustment section to the container section,
A measurement step of measuring at least one of the water content, wetness, tongue pressure, pH, and temperature of the measurement target by the sensor unit attached to the container unit.
A measurement method including a determination step that starts the measurement step after determining that the position in the measurement object is a correct position by a sensing unit that senses the position in the measurement object. The measuring method according to claim 10 , further comprising an adjusting step of adjusting the internal pressure of the container portion to a predetermined range after the sending step. The measurement method according to claim 10 or 11 , further comprising a discharge step of discharging the gas in the container portion when the position of the measurement target by the sensing unit deviates from the correct position after the determination step.

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