JP6938325B2 - Measuring device, measuring method and program - Google Patents

Description

The present disclosure relates to measuring devices, measuring methods and programs.

Conventionally, bathing information systems that can be used to improve sleep disorders are known. For example, Patent Document 1 discloses a bathing information system in which a presentation means for presenting bathing conditions is provided in the bathroom or a location in the vicinity thereof.

Japanese Unexamined Patent Publication No. 2003-225276

The ease of falling asleep can also be affected by the timing of leaving the bath. Therefore, if it is possible to know the timing of leaving the bath so that it becomes easier to fall asleep, the usefulness will be improved.

An object of the present disclosure is to provide measuring devices, measuring methods and programs whose usefulness can be improved.

One aspect of the measuring device includes a body temperature measuring unit, a control unit, and a blood flow sensor . The body temperature measuring unit measures the body surface temperature of the subject. When the body surface temperature of the subject exceeds the first temperature threshold value, the control unit outputs a first notification recommending leaving the bath from the notification unit. The blood flow sensor measures the blood flow of the subject. When the body surface temperature of the subject exceeds the first temperature threshold and the blood flow of the subject exceeds a predetermined blood flow threshold, the control unit receives the first from the notification unit. The notification of is output.

One aspect of the measuring method is a measuring method using a measuring device. The measuring method includes a step of measuring the body surface temperature of the subject, a step of determining whether or not the body surface temperature of the subject exceeds the first temperature threshold value, and a body surface of the subject. When it is determined that the temperature exceeds the first temperature threshold value, a step of outputting a first notification recommending leaving the bath from the notification unit, a step of measuring the blood flow of the subject, and the subject When the body surface temperature of the subject exceeds the first temperature threshold value and the blood flow volume of the subject exceeds a predetermined blood flow rate threshold value, the step of outputting the first notification from the notification unit. include.

One aspect of the program is a step of measuring the body surface temperature of the subject on a computer, a step of determining whether or not the body surface temperature of the subject exceeds the first temperature threshold, and the step of determining whether or not the subject's body surface temperature exceeds the first temperature threshold. When it is determined that the body surface temperature of the person exceeds the first temperature threshold value, a step of outputting a first notification recommending leaving the bath from the notification unit, a step of measuring the blood flow of the subject, and a step of measuring the blood flow of the subject. When the body surface temperature of the subject exceeds the first temperature threshold and the blood flow of the subject exceeds a predetermined blood flow threshold, the notification unit outputs the first notification. To execute the steps.

According to the present disclosure, it is possible to provide a measuring device, a measuring method and a program capable of improving usefulness.

It is a functional block diagram which shows the schematic structure of the measuring apparatus which concerns on one Embodiment. It is the schematic which shows an example of the side view of the measuring device of FIG. It is the schematic which shows an example of the back surface of the main body of the measuring apparatus of FIG. It is a figure which shows typically an example of the state which attached the measuring device of FIG. It is a flowchart which shows an example of the process executed by the control part of FIG. It is a functional block diagram which shows the schematic structure of the measurement system which concerns on one Embodiment.

Hereinafter, embodiments will be described in detail with reference to the drawings.

FIG. 1 is a functional block diagram showing a schematic configuration of a measuring device 100 according to an embodiment. The measuring device 100 according to the present embodiment includes a temperature sensor 110, a blood flow sensor 120, a control unit 130, a storage unit 140, a communication unit 150, an input unit 160, and a notification unit 170.

The measuring device 100 is a device worn and used by a subject (user), for example, when taking a bath. The measuring device 100 measures the body surface temperature of the subject by the body temperature measuring unit 111 included in the temperature sensor 110, and notifies the information from the notification unit 170 based on the body surface temperature. In the present embodiment, the measuring device 100 measures the body surface temperature of the subject at the time of bathing, determines the timing for recommending withdrawal based on the body surface temperature, and is the timing for recommending withdrawal. At that time, a notification recommending leaving the bath is output.

The temperature sensor 110 measures the temperature. As shown in FIG. 1, for example, the temperature sensor 110 includes a body temperature measuring unit 111 and a hot water temperature measuring unit 112. The body temperature measuring unit 111 and the hot water temperature measuring unit 112 may be composed of, for example, well-known temperature sensors such as a thermocouple, a thermistor, and a bimetal, respectively.

The body temperature measuring unit 111 measures the body surface temperature of the subject. The body temperature measuring unit 111 is arranged in the measuring device 100 at a position where it comes into contact with the body surface (skin) of the subject when the measuring device 100 is attached, for example. The body temperature measuring unit 111 transmits information on the measured body surface temperature to the control unit 130.

The hot water temperature measuring unit 112 measures the temperature (hot water temperature) of the hot water in which the subject takes a bath. The hot water temperature measuring unit 112 is arranged in the measuring device 100 at a position where the temperature of the hot water bathed by the subject can be measured, for example, when the subject is immersed in hot water in the bathtub. The hot water temperature measuring unit 112 transmits information about the measured hot water temperature to the control unit 130.

The blood flow sensor 120 measures the blood flow of the subject. The blood flow sensor 120 is arranged in the measuring device 100 at a position where it comes into contact with the body surface of the subject when the measuring device 100 is attached, for example. The blood flow sensor 120 includes a light emitting unit 121 and a light receiving unit 122 as a measuring mechanism. The light emitting unit 121 irradiates the portion of the subject (examined portion) that is in contact with the measuring device 100 when the measuring device 100 is attached with the measurement light. The light receiving unit 122 acquires reflected light (scattered light) from the tissue inside the test site with respect to the irradiated measurement light. The photoelectric conversion signal of the scattered light received by the light receiving unit 122 is transmitted to the control unit 130 included in the measuring device 100.

The light emitting unit 121 emits laser light, for example. The light emitting unit 121 irradiates the test site with laser light having a wavelength capable of detecting a predetermined component contained in blood, for example, as measurement light. The light emitting unit 121 is composed of, for example, one LD (laser diode).

The light receiving unit 122 receives the scattered light of the measurement light from the test site as biological information. The light receiving unit 122 is composed of, for example, a PD (photodiode: Photo diode). The light receiving unit 122 transmits the photoelectric conversion signal of the received scattered light to the control unit 130. The control unit 130 calculates the blood flow volume at the test site of the test subject based on the photoelectric conversion signal. The details of the blood flow calculation process by the control unit 130 will be described later.

The control unit 130 includes at least one processor 131 that controls and manages the entire measuring device 100, including each functional block of the measuring device 100. The control unit 130 is configured to include at least one processor 131 such as a CPU (Central Processing Unit) that executes a program that defines a control procedure, and realizes its function. Such a program is stored, for example, in a storage unit 140, an external storage medium connected to the measuring device 100, or the like.

According to various embodiments, the at least one processor 131 is executed as a single integrated circuit (IC) or as a plurality of communicably connected integrated circuit ICs and / or discrete circuits. May be good. At least one processor 131 can be run according to a variety of known techniques.

In one embodiment, processor 131 includes, for example, one or more circuits or units configured to perform one or more data calculation procedures or processes by executing instructions stored in the associated memory. In other embodiments, the processor 131 may be firmware (eg, a discrete logic component) configured to perform one or more data computation procedures or processes.

According to various embodiments, the processor 131 is one or more processors, controllers, microprocessors, microcontrollers, application specific integrated circuits (ASICs), digital signal processing devices, programmable logic devices, field programmable gate arrays, or these. Any combination of devices or configurations of the device, or other known combinations of devices or configurations, may be included to perform the function as the control unit 130 described below.

The control unit 130 calculates the blood flow volume at the test site of the test subject based on the photoelectric conversion signal of the scattered light received from the blood flow sensor 120. The control unit 130 measures the blood flow using, for example, a Doppler shift. Here, a blood flow measurement technique using Doppler shift will be described.

Scattered light scattered from moving blood cells in a living tissue undergoes a frequency shift (Doppler shift) due to the Doppler effect in proportion to the moving speed of blood cells in the blood. The control unit 130 detects a beat signal (also referred to as a beat signal) generated by the interference of light from scattered light from a stationary tissue and scattered light from a moving blood cell. This growl signal expresses the intensity as a function of time. The control unit 130 makes this growl signal a power spectrum in which power is expressed as a function of frequency. In the power spectrum of this beat signal, the Doppler shift frequency is proportional to the velocity of the blood cells. Also, in the power spectrum of this growl signal, the power corresponds to the amount of blood cells. The control unit 130 obtains the blood flow rate by multiplying the power spectrum of the beat signal by a frequency and integrating it.

The control unit 130 determines whether or not it is time to recommend leaving the bath based on the information on the body surface temperature acquired from the body temperature measuring unit 111. When the control unit 130 determines that it is time to recommend bathing, the control unit 130 outputs a notification recommending bathing from the notification unit 170. The control unit 130 may determine whether or not it is time to recommend leaving the bath based on the calculated blood flow in addition to the body surface temperature of the subject. The details of the process executed by the control unit 130 will be described later. In addition, in this specification, the output of the notification recommending the bathing is also described below as "notifying the bathing".

The storage unit 140 may be composed of a semiconductor memory, a magnetic memory, or the like. The storage unit 140 stores various information and / or a program for operating the measuring device 100 and the like. The storage unit 140 may also function as a work memory. The storage unit 140 may store, for example, the body surface temperature of the subject measured by the body temperature measuring unit 111 and the blood flow volume of the subject calculated based on the scattered light received by the blood flow sensor 120. ..

The communication unit 150 transmits / receives various information by communicating with another device. The communication unit 150 can transmit and receive information using a wireless, wired, or network in combination of wireless and wired. The communication unit 150 may perform communication by, for example, Bluetooth (registered trademark), infrared rays, NFC (Near Field Radio Communication), wireless LAN (Local Area Network), wired LAN or any other communication medium, or any combination thereof. can. The communication unit 150 can acquire information on the core body temperature measured by the core thermometer from, for example, a core thermometer described later. Core body temperature is the temperature inside the body.

The input unit 160 receives an operation input from the subject, and is composed of, for example, an operation button (operation key). The input unit 160 may be configured by, for example, a touch screen, display an input area for receiving an operation input from the subject on a part of the display device, and may accept the touch operation input by the subject.

The notification unit 170 notifies information by sound, vibration, an image, or the like. The notification unit 170 may be configured to include a speaker, a vibrator, and the like. For example, based on the control of the control unit 130, the notification unit 170 notifies the bath when it is time to recommend the bath.

FIG. 2 is a schematic view showing an example of a side view of the measuring device 100. As shown in FIG. 2, the measuring device 100 includes a main body 180 and a mounting portion 190.

The main body 180 includes each functional unit described with reference to FIG. The main body 180 may have, for example, a waterproof structure. The main body 180 includes a back surface 182 that comes into contact with the body surface of the subject and a front surface 181 on the opposite side of the back surface 182 when the subject wears the measuring device 100. For example, the input unit 160 may be provided on the surface 181 side.

FIG. 3 is a schematic view showing an example of the back surface 182 of the main body 180 of the measuring device 100. As shown in FIG. 3, the measuring device 100 includes, for example, a body temperature measuring unit 111, a light emitting unit 121, and a light receiving unit 122 on the back surface 182 of the main body 180. With such an arrangement, the body temperature measuring unit 111 can come into contact with the body surface of the subject and measure the body surface temperature of the subject while the subject is wearing the measuring device 100. Further, with such an arrangement, the light emitting unit 121 can irradiate the test portion with the measurement light and the light receiving unit 122 can receive the reflected light from the test portion while the subject is wearing the measuring device 100.

As shown in FIG. 3, the measuring device 100 may include a notification unit 170 on the back surface 182 of the main body 180, for example. For example, when the notification unit 170 is configured to include a vibrator and performs notification by vibration, the notification unit 170 comes into contact with the body surface of the subject due to the arrangement shown in FIG. It becomes easier to detect vibration.

Referring to FIG. 2 again, the mounting portion 190 is a mechanism for the subject to maintain the mounted state of the measuring device 100. The mounting portion 190 is configured as, for example, a band or the like that can be worn by the subject by wrapping it around a wrist, ankle, arm, or the like. The mounting portion 190 may be configured to be removable by the subject. For example, the subject can wear the measuring device 100 by wrapping the mounting portion 190 around the wrist, as schematically shown in FIG.

Next, an example of the process executed by the control unit 130 of the measuring device 100 will be described. The control unit 130 notifies the subject who is taking a bath of the bath when it is time to recommend the bath. The timing for recommending leaving the bath is, for example, the timing when the control unit 130 determines that the subject's body is in a state where it is easy to fall asleep. The state in which the subject's body is likely to fall asleep is, for example, a state in which the so-called sleep onset latency from when the subject tries to fall asleep to when he / she actually falls asleep is likely to be shortened.

The human brain enhances parasympathetic nerves when falling asleep. The parasympathetic nerve acts to release the deep temperature to the outside in order to lower the temperature of the brain. Specifically, the parasympathetic nerve dilates peripheral blood vessels to transfer deep heat to the outer shell (ie, near the skin). In peripheral blood vessels, the heat in the blood is dissipated by the contact between the skin and the air. In the outer shell, the heat carried from the deep part through the blood promotes sweating, and the sweat evaporates to dissipate the heat in the blood. In this way, core body temperature is lowered. That is, when the core body temperature does not rise too much and the peripheral blood vessels are dilated to easily dissipate heat, the person tends to fall asleep and the sleep onset latency tends to be shortened.

By the way, when a person bathes at a temperature slightly higher than the body temperature (for example, around 39 degrees), the parasympathetic nerve is enhanced and peripheral blood vessels are dilated. On the other hand, if you take a bath at a temperature higher than your body temperature for a long time, or if you take a bath with hot water that is too high compared to your body temperature, your core body temperature will rise too much, your sympathetic nerves will be enhanced, and peripheral blood vessels will contract. do. In view of these circumstances, if the peripheral blood vessels are dilated by bathing and the patient leaves the bath at a timing when the core body temperature does not rise too much, the peripheral blood vessels are dilated and the core body temperature is appropriately adjusted after the bath. Because it can be lowered to, it becomes easier for a person to fall asleep. Therefore, the control unit 130 of the measuring device 100 according to the present embodiment notifies the patient to leave the bath at a timing when the peripheral blood vessels are dilated and the core body temperature does not rise too much. If the subject leaves the bath at the timing of this notification of leaving the bath, the subject is likely to fall asleep for the reason described above.

An example of the process executed by the control unit 130 of the measuring device 100 will be specifically described with reference to the flowchart shown in FIG. The flow shown in FIG. 5 is started, for example, when the subject wears the measuring device 100 and performs an input operation on the measuring device 100 to start execution of the process. At the start of the flow shown in FIG. 5, the subject is in a state before taking a bath.

The control unit 130 acquires the core body temperature T0 of the subject (step S11). The acquired core body temperature T0 may be stored in, for example, a storage unit 140.

The control unit 130 can acquire the core body temperature T0 of the subject by various methods. For example, the subject measures the core body temperature T0 using a known core thermometer, and inputs the core body temperature T0 measured using the input unit 160 of the measuring device 100 to the measuring device 100. The control unit 130 can acquire the core body temperature T0 by receiving the input from the input unit 160. As the core thermometer, for example, a method of measuring the amount of infrared rays radiated from the subject's ear with an infrared sensor can be used. The core thermometer may use a method other than this method as long as it is a thermometer capable of measuring the core body temperature of the subject.

When the core thermometer has a communication function, the control unit 130 acquires the core body temperature T0 by receiving the subject's core body temperature T0 measured by the core thermometer from the core thermometer via the communication unit 150. May be good.

The control unit 130 acquires the ambient temperature Te (step S12). The acquired environmental temperature Te may be stored in, for example, the storage unit 140.

The environmental temperature Te is the temperature (air temperature) of the space where the subject is. If the subject is in his room, for example, before taking a bath, the ambient temperature Te is the temperature of his room. The ambient temperature Te may be a room (for example, a bedroom) in which the subject sleeps.

The control unit 130 can acquire the ambient temperature Te by various methods. For example, the subject inputs the environmental temperature Te indicated by the thermometer installed in the room using the input unit 160 of the measuring device 100. The control unit 130 can acquire the environmental temperature Te by receiving the input from the input unit 160. Alternatively, when the thermometer installed in the room has a communication function, the control unit 130 receives the environmental temperature Te measured by the thermometer from the thermometer via the communication unit 150 to obtain the environmental temperature Te. You may get it. Alternatively, the control unit 130 may acquire the environmental temperature Te by measuring the environmental temperature Te with the temperature sensor 110.

The control unit 130 acquires the blood flow Q0 before bathing (step S13). Specifically, the control unit 130 controls the light emitting unit 121 to irradiate the test portion of the subject equipped with the measuring device 100 with the measurement light. The control unit 130 acquires a photoelectric conversion signal of the scattered light received by the light receiving unit 122 from the light receiving unit 122. The control unit 130 can acquire the blood flow Q0 by measuring the blood flow using the above-mentioned Doppler shift principle based on the acquired photoelectric conversion signal.

When the control unit 130 completes the acquisition of the core body temperature T0, the environmental temperature Te, and the blood flow Q0, the subject takes a bath. When the acquisition of the core body temperature T0, the environmental temperature Te, and the blood flow rate Q0 is completed, the control unit 130 may output a notification indicating that the acquisition of these information is completed from the notification unit 170. From this notification, the subject can know that it is possible to take a bath.

When the subject starts bathing, the control unit 130 acquires the hot water temperature Tw of the hot water in which the subject takes a bath (step S14). Specifically, the control unit 130 acquires the hot water temperature Tw measured by the hot water temperature measuring unit 112.

The control unit 130 calculates the first temperature threshold value Ts (step S15). The first temperature threshold value Ts is a threshold value relating to the body surface temperature at which it can be estimated that the core body temperature of the subject has risen by a predetermined value or more. The control unit 130 can calculate the first temperature threshold value Ts by using a predetermined mathematical formula. In the present embodiment, the first temperature threshold value Ts for presuming that the core body temperature has risen by a predetermined value or more is provided to prevent the blood flow from being deteriorated due to the decrease in body temperature after leaving the bath. That is, the first temperature threshold value is set in consideration of the decrease in body temperature of the subject during the time from when he / she leaves the bath to when he / she falls asleep.

For example, the control unit 130 can calculate the first temperature threshold Ts using the following equation (1).
Ts = T0 + T (Tw, Te) ... (1)
In the formula (1), T0 is the core body temperature T0 before bathing acquired in step S11, Te is the environmental temperature Te acquired in step S12, and Tw is the hot water temperature Tw acquired in step S14. In the formula (1), T (Tw, Te) is a function related to temperature expressed using the hot water temperature Tw and the ambient temperature Te.

T (Tw, Te) in the formula (1) may be, for example, T (Tw, Te) = TC1 × (Tw-Te). Here, TC1 is, for example, a positive constant. In this case, assuming that the hot water temperature Tw is higher than the environmental temperature Te, T (Tw, Te) increases as the difference between the hot water temperature Tw and the environmental temperature Te increases. That is, assuming that the hot water temperature Tw is constant, the lower the environmental temperature Te, the larger the first temperature threshold Ts. That is, the lower the environmental temperature Te, the more difficult it is for the body surface temperature of the subject to reach the first temperature threshold Ts.

The mathematical formula used by the control unit 130 is not limited to the formula shown in the formula (1). For example, the control unit 130 may calculate the first temperature threshold value Ts using the following equation (2).
Ts = T0 + TC2 ... (2)
In equation (2), TC2 is, for example, a positive constant. TC2 can be, for example, 1.5 [° C.] or the like. When the control unit 130 uses the equation (2), a predetermined value TC2 higher than the core body temperature T0 before bathing of the subject is calculated as the first temperature threshold value Ts.

Next, the control unit 130 calculates the blood flow threshold Qs (step S16). The blood flow threshold Qs is a threshold for blood flow used to determine whether or not the blood flow of the subject exceeds a predetermined amount. The control unit 130 can calculate the blood flow threshold Qs by using a predetermined mathematical formula.

For example, the control unit 130 can calculate the blood flow threshold Qs using the following equation (3).
Qs = Q0 + Q (Tw, Te) ... (3)
In the formula (3), Q0 is the blood flow Q0 before bathing acquired in step S13. In the formula (3), Q (Tw, Te) is a function related to blood flow expressed using the hot water temperature Tw and the environmental temperature Te.

Q (Tw, Te) in the formula (3) may be, for example, Q (Tw, Te) = QC1 × (Tw-Te). Here, QC1 is, for example, a positive constant. In this case, assuming that the hot water temperature Tw is higher than the environmental temperature Te, Q (Tw, Te) increases as the difference between the hot water temperature Tw and the environmental temperature Te increases. That is, assuming that the hot water temperature Tw is constant, the lower the environmental temperature Te, the larger the blood flow threshold Qs. That is, the lower the environmental temperature Te, the more difficult it is for the blood flow of the subject to reach the blood flow threshold Qs.

The mathematical formula used by the control unit 130 is not limited to the formula shown in the formula (3). For example, the control unit 130 may calculate the blood flow threshold Qs using the following equation (4).
Qs = QC2 x Q0 ... (4)
In equation (4), QC2 is, for example, a positive constant. QC2 can be, for example, 1.1 or the like. When the control unit 130 uses the equation (4), a value QC2 higher than the blood flow Q0 before bathing of the subject is calculated as the blood flow threshold Qs.

The first temperature threshold value Ts calculated in step S15 and the blood flow threshold value Qs calculated in step S16 may be stored in, for example, the storage unit 140.

Next, the control unit 130 acquires the body surface temperature T of the subject (step S17). Specifically, the control unit 130 acquires the detected body surface temperature T from the body temperature measuring unit 111.

Next, the control unit 130 determines whether or not the body surface temperature T acquired in step S17 is higher than the first temperature threshold value Ts calculated in step S15 (step S18).

When the control unit 130 determines that the body surface temperature T is equal to or less than the first temperature threshold Ts (No in step S18), is the body surface temperature T acquired in step S17 higher than the second temperature threshold Td? Whether or not it is determined (step S19). The second temperature threshold value Td is a threshold value related to the body surface temperature at which it can be estimated that the core body temperature of the subject has reached a predetermined temperature or higher. If the core body temperature rises too much, it may be difficult for the subject to fall to the extent that it is easy to fall asleep. The second temperature threshold value Td is a temperature threshold value used for determining whether or not the core body temperature has risen to such an extent that it becomes difficult for the subject to fall asleep. The second temperature threshold Td may be higher than the first temperature threshold Ts. The second temperature threshold value Td may be set as a predetermined value in advance and stored in the storage unit 140, for example. The second temperature threshold value Td may be calculated by, for example, the control unit 130 using a predetermined algorithm.

When the control unit 130 determines that the body surface temperature T is higher than the second temperature threshold value Td (Yes in step S19), the notification unit 170 gives a bath leaving notification (step S22). In this case, the subject who has received the notice of leaving the bath can easily prevent the core body temperature from rising too much by leaving the bath according to the notice. That is, the control unit 130 can notify the subject of an excessive increase in the body temperature of the subject due to the subject having been bathing for a long time.

On the other hand, when the control unit 130 determines that the body surface temperature T is equal to or less than the second temperature threshold value Td (No in step S19), the control unit 130 proceeds to step S17 of the flow.

In step S18, when the control unit 130 determines that the body surface temperature T is higher than the first temperature threshold value Ts (Yes in step S18), the control unit 130 acquires the blood flow rate Q of the subject (step S20). Specifically, the control unit 130 can acquire the blood flow Q by measuring the blood flow using the above-mentioned Doppler shift principle based on the photoelectric conversion signal acquired from the blood flow sensor 120.

The control unit 130 determines whether or not the blood flow rate Q acquired in step S20 is higher than the blood flow rate threshold Qs (step S21).

When the control unit 130 determines that the blood flow rate Q is equal to or less than the blood flow rate threshold Qs (No in step S21), the control unit 130 proceeds to step S17 of the flow. In this way, the control unit 130 repeats the flow from step S17 until the blood flow rate Q exceeds the blood flow rate threshold value Qs.

When the control unit 130 determines that the blood flow rate Q is higher than the blood flow rate threshold value Qs (Yes in step S21), the notification unit 170 gives a bath leaving notification (step S22). In this case, the subject who received the bath notification is in a state where the body surface temperature T rises by a predetermined value or more and the blood flow rate Q rises by a predetermined value or more to promote blood flow by leaving the bath according to the notification. You can leave the bath. Further, in this case, the subject who has received the notice of withdrawal can take a bath before the core body temperature rises too much by taking a bath according to the notice. That is, the more difficult it is to fall asleep, the easier it is to prevent the body temperature from rising. The bathing notification in step S22 may be different depending on whether it is determined to be Yes in step S21 or Yes in step S19. For example, the bathing notification when it is determined to be Yes in step S21 is simply a bathing notification prompting to leave the bath, and the bathing notification when it is determined to be Yes in step S19 notifies the subject of danger. It may be a bathing notice including the contents to be done.

After leaving the bath, the subject is in a state where the blood vessels are dilated, and the parasympathetic nerve is enhanced when the core body temperature decreases. That is, the subject is likely to fall asleep after a predetermined time when the core body temperature becomes a predetermined temperature lower.

After leaving the bath, the subject may measure the core body temperature again using the core thermometer. In this case, the core thermometer or other device (including the measuring device 100) capable of communicating with the core thermometer estimates the time during which the subject is likely to fall asleep based on the core body temperature after bathing measured by the core thermometer. You may (calculate). For example, a core thermometer or other device may estimate the time during which a subject is more likely to fall asleep based on the ambient temperature Te and the core body temperature measured after leaving the bath. For example, a core thermometer or other device calculates the time until the core body temperature measured after leaving the bath drops to the core body temperature measured before bathing based on the environmental temperature Te, and the calculated time is used as the subject. It may be estimated that the time when the examiner is likely to fall asleep. The core thermometer or other device may inform the subject of the estimated time. This allows the subject to know when it is easy to fall asleep.

As described above, the measuring device 100 according to the present embodiment gives a bath leaving notification when the body surface temperature T exceeds the first temperature threshold Ts and the blood flow Q exceeds the blood flow threshold Qs. As a result, the subject can leave the bath in a state where the body surface temperature T rises by a predetermined value or more and the blood flow rate Q rises by a predetermined value or more and the blood flow is promoted. Therefore, the subject is likely to fall asleep after a predetermined time when the core body temperature is lowered to a predetermined temperature after leaving the bath. In this way, according to the measuring device 100, the usefulness can be improved.

Several embodiments have been described for the complete and clear disclosure of this disclosure. However, the accompanying claims are not limited to the above embodiments, and all modifications and alternatives that can be created by those skilled in the art within the scope of the basic matters set forth herein. It should be configured to embody a unique configuration. In addition, the requirements shown in some embodiments can be freely combined.

For example, in the above embodiment, it has been explained that the measuring device 100 gives a bath leaving notification when the body surface temperature T exceeds the first temperature threshold Ts and the blood flow Q exceeds the blood flow threshold Qs. .. However, the measuring device 100 does not necessarily have to give the bath leaving notification based on the body surface temperature T and the blood flow rate Q. For example, the measuring device 100 may give a bath leaving notification based only on the body surface temperature T. That is, the measuring device 100 may give a bath leaving notification when the body surface temperature T exceeds the first temperature threshold value Ts. There is a predetermined correlation between the body temperature of the living body and the blood flow, and it is presumed that when the body surface temperature T rises, the blood flow Q also rises. Therefore, even when the measuring device 100 gives a notice of withdrawal from the bath based only on the body surface temperature T, a predetermined increase in blood flow is expected. In this way, when the bath leaving notification is given only based on the body surface temperature T, the measuring device 100 does not have to include the blood flow sensor 120, so that the structure of the measuring device 100 can be simplified. ..

In the above embodiment, the measuring device 100 may determine whether or not the hot water temperature Tw is an appropriate temperature based on the hot water temperature Tw measured by the hot water temperature measuring unit 112. For example, the control unit 130 of the measuring device 100 compares the core body temperature T0 before bathing acquired in step S11 of the flow of FIG. 5 with the hot water temperature Tw acquired in step S14. The control unit 130 notifies the information regarding the comparison result from the notification unit 170. The information regarding the result of the comparison is, for example, whether or not the hot water temperature Tw is an appropriate temperature.

Here, the appropriate hot water temperature Tw may include a hot water temperature at which the core body temperature T0 of the subject tends to rise. For example, when the hot water temperature Tw is equal to or lower than the core body temperature T0, the core body temperature T0 does not rise even if the subject takes a bath. When the hot water temperature Tw is higher than the core body temperature T0, the core body temperature T0 rises when the subject takes a bath. Therefore, for example, the control unit 130 determines that the hot water temperature Tw is appropriate when the hot water temperature Tw is higher than the core body temperature T0, and determines that the hot water temperature Tw is not appropriate when the hot water temperature Tw is equal to or lower than the core body temperature T0. judge.

The appropriate hot water temperature Tw may include a hot water temperature at which the blood vessels of the subject are likely to dilate. For example, when the hot water temperature Tw is higher than the predetermined hot water temperature, the sympathetic nerve of the subject is enhanced and the blood vessels are constricted. Therefore, for example, the control unit 130 determines that the hot water temperature Tw is not appropriate when the hot water temperature Tw is higher than the predetermined hot water temperature, and when the hot water temperature Tw is equal to or lower than the predetermined hot water temperature, the hot water temperature Tw is set. Judge as appropriate.

The appropriate hot water temperature Tw is not limited to the examples described here, and may be any temperature at which the subject can easily fall asleep after taking a bath.

When the subject is notified that the hot water temperature Tw is not appropriate, the subject can take measures such as changing (adjusting) the hot water temperature Tw, for example.

The measuring device 100 according to the above embodiment may be connected to another information processing device so as to be capable of information communication. FIG. 6 is a functional block diagram showing a schematic configuration of the measurement system 300 according to the embodiment. The measuring system 300 shown in FIG. 6 includes a measuring device 100 and an information processing device 200. The measuring device 100 and the information processing device 200 are connected to each other so as to be able to communicate with each other. Since the functional block included in the measuring device 100 is the same as that described in the above embodiment, detailed description thereof will be omitted here.

The information processing device 200 is composed of, for example, a computer. The information processing device 200 can acquire various information from the measuring device 100, store the acquired information, and execute information processing based on the acquired information. The information processing device 200 includes a control unit 230, a storage unit 240, and a communication unit 250.

The control unit 230 includes at least one processor 231 that controls and manages the entire information processing device 200, including each functional block of the information processing device 200. The control unit 230 is configured to include at least one processor 231 such as a CPU that executes a program that defines a control procedure, and realizes its function. Such a program is stored in, for example, a storage unit 240, an external storage medium connected to the information processing device 200, or the like. As a specific configuration of the processor 231, those listed in the description of the processor 131 can be used.

The storage unit 240 may be composed of a semiconductor memory, a magnetic memory, or the like. The storage unit 240 stores various information, a program for operating the information processing device 200, and the like. The storage unit 240 may also function as a work memory. The storage unit 240 may store the information acquired from the measuring device 100.

The communication unit 250 transmits / receives various information by communicating with the measuring device 100. The communication unit 250 can transmit and receive information using a wireless, wired, or network that is a combination of wireless and wired. The communication unit 250 can perform communication by, for example, Bluetooth (registered trademark), infrared rays, NFC, wireless LAN, wired LAN, or any other communication medium, or any combination thereof.

As shown in FIG. 6, when the present disclosure is realized as the measurement system 300, for example, the measurement device 100 can transmit the acquired information and / or the calculated information to the information processing device 200. The acquired information is, for example, the core body temperature T0 acquired in step S11 of FIG. 5, the environmental temperature Te acquired in step S12, the blood flow Q0 acquired in step S13, the hot water temperature Tw acquired in step S14, and the acquired information in step S17. It may include at least one of the body surface temperature T and the blood flow Q obtained in step S20. The calculated information may include, for example, at least one of the first temperature threshold Ts calculated in step S15 of FIG. 5 and the blood flow threshold Qs calculated in step S16. The measuring device 100 may transmit, for example, information regarding the determination results in steps S18, S19, and S21 of FIG. 5 to the information processing device 200. The information processing device 200 may store the information received from the measuring device 100 in the storage unit 240. At this time, the information processing device 200 may store the information received from the measuring device 100 in the storage unit 240 in association with the information that identifies the measuring device 100 that is the source of the information. As a result, the information processing device 200 can store the information of the plurality of measuring devices 100.

As shown in FIG. 6, when the present disclosure is realized as the measurement system 300, for example, the information processing apparatus 200 can execute at least a part of the processes described by the measuring apparatus 100 in the above embodiment. .. For example, the measuring device 100 executes the acquisition step described in step S11, step S12, step S13, step S14, step S17, and step S20 of FIG. The measuring device 100 transmits the information acquired in these steps to the information processing device 200. The information processing device 200 can execute the processes described in steps S15, S16, S18, S19, and S21 of FIG. 5 based on the information acquired from the measuring device 100. When the information processing device 200 determines that it is the timing to recommend the bath, the information processing device 200 transmits a signal for executing the bath notification to the measuring device 100. The measuring device 100 gives a bath leaving notification according to the signal acquired from the information processing device 200. In this case, since a part of the processing described with reference to FIG. 5 is executed by the information processing device 200, the processing load by the measuring device 100 can be reduced.

100 Measuring device 110 Temperature sensor 111 Body temperature measuring unit 112 Hot water temperature measuring unit 120 Blood flow sensor 121 Light emitting unit 122 Light receiving unit 130, 230 Control unit 131, 231 Processor 140, 240 Storage unit 150, 250 Communication unit 160 Input unit 170 Notification unit 180 Main body 181 Front surface 182 Back surface 190 Mounting part 200 Information processing device 300 Measuring system Q, Q0 Blood flow Qs Blood flow threshold T Body surface temperature T0 Deep body temperature Te Environmental temperature Ts First temperature threshold Td Second temperature threshold Tw Hot water temperature

Claims (7)

A body temperature measuring unit that measures the body surface temperature of the subject,
When the body surface temperature of the subject exceeds the first temperature threshold value, the notification unit outputs a first notification recommending leaving the bath, and a control unit.
A blood flow sensor that measures the blood flow of the subject, and
With
When the body surface temperature of the subject exceeds the first temperature threshold and the blood flow of the subject exceeds a predetermined blood flow threshold, the control unit receives the first from the notification unit. To output the notification of
measuring device. The measuring device according to claim 1, wherein the control unit calculates the first temperature threshold value based on the core body temperature of the subject before bathing. It also has a hot water temperature measuring unit that measures the temperature of the hot water that the subject takes a bath.
The measuring device according to claim 2 , wherein the control unit calculates the first temperature threshold value based on the temperature of the hot water. It also has a hot water temperature measuring unit that measures the temperature of the hot water that the subject takes a bath.
The measuring device according to claim 1, wherein the control unit outputs information regarding the result of the comparison from the notification unit based on the comparison between the temperature of the hot water and the core body temperature of the subject. The measuring device according to claim 1, further comprising a mounting portion for the subject to maintain the mounted state of the measuring device. It is a measurement method using a measuring device.
Steps to measure the body surface temperature of the subject,
A step of determining whether or not the body surface temperature of the subject exceeds the first temperature threshold, and
When it is determined that the body surface temperature of the subject exceeds the first temperature threshold value, a step of outputting a first notification recommending leaving the bath from the notification unit, and a step of outputting the first notification.
The step of measuring the blood flow of the subject and
When the body surface temperature of the subject exceeds the first temperature threshold and the blood flow of the subject exceeds a predetermined blood flow threshold, the notification unit outputs the first notification. Steps and
Measurement method including. On the computer
Steps to measure the body surface temperature of the subject,
A step of determining whether or not the body surface temperature of the subject exceeds the first temperature threshold, and
When it is determined that the body surface temperature of the subject exceeds the first temperature threshold value, a step of outputting a first notification recommending leaving the bath from the notification unit, and a step of outputting the first notification.
The step of measuring the blood flow of the subject and
When the body surface temperature of the subject exceeds the first temperature threshold and the blood flow of the subject exceeds a predetermined blood flow threshold, the notification unit outputs the first notification. Steps and
A program that executes.

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