JP2016146994A - Biological information measurement device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a biological information measurement device capable of accurately measuring the activity state of autonomic nervous functions.SOLUTION: A biological information measurement device 1 for measuring autonomic nervous functions comprises: a measurement surface facing a measurement target section; a pulse wave detection part 21 which is disposed on the measurement surface and detects pulse wave information being information on pulse waves; a contact detection part 36 which detects contact state information being information reflecting a contact state between the measurement target section and the measurement surface; and an activity state measurement part 31 which measures the activity state of the autonomic nervous functions on the basis of the pulse wave information and the contact state information.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a portable biological information measuring device.

  With the development of wearable devices in recent years, biological information measuring devices capable of measuring biological information including an autonomic nerve function in daily life have become widespread. The living body information measuring apparatus of Patent Document 1 as an example includes a pulse wave sensor that measures a pulse wave of a living body using a light emitting unit and a light receiving unit, a main body that houses the pulse wave sensor, and a band attached to the main body. The band includes a pair of anti-slip portions for preventing the position of the main body from shifting from the wrist. For this reason, when the body to which the biological information measuring device is mounted is moving, the possibility that the accuracy of the pulse wave measurement by the pulse wave sensor is reduced is reduced.

Japanese Patent No. 42481717

  Since the wrist shape differs from living body to living body, according to the living body information measuring device, the pulse wave sensor may not be in close contact with the wrist, and disturbance light may enter the light receiving unit through the gap between the main body and the wrist. In this case, the pulse wave is not accurately measured, and the activity state of the autonomic nerve function may not be accurately measured.

  An object of the present invention is to provide a biological information measuring device in which an activity state of an autonomic nerve function is easily measured accurately.

  One form of the biological information measuring device according to the present invention is a biological information measuring device that measures an autonomic nerve function, a measurement surface that faces a measurement target part, and a pulse wave that is arranged on the measurement surface and is information about a pulse wave A pulse wave detection unit for detecting information, a contact detection unit for detecting contact state information, which is information reflecting the contact state between the measurement target region and the measurement surface, and an autonomic nerve based on the pulse wave information and the contact state information An activity state measuring unit that measures the activity state of the function.

  According to the biological information measuring device, the activity state of the autonomic nerve function is easily measured accurately.

FIG. 2 is a front view of the biological information measuring apparatus according to the first embodiment. FIG. 2 is a rear view of the biological information measuring device of FIG. 1. FIG. 2 is a front view showing an example of a wearing state of the biological information measuring device of FIG. 1. FIG. 2 is a block diagram showing a control configuration of the biological information measuring apparatus of FIG. 1. These are an example of the measurement result by the nerve state determination part of FIG. Is an example of a measurement result by the temperature sensor of FIG. These are the rear views of the biological information measuring device of Embodiment 2. FIG. These are an example of the measurement result by the pressure sensor of FIG. These are the rear views of the biological information measuring device of Embodiment 3. FIG. FIG. 10 is a cross-sectional view of the biological information measuring device in FIG. 9. Is an example of a measurement result by the optical sensor of FIG. These are block diagrams which show the control structure of the biological information measuring device of Embodiment 4. FIG. These are an example of the measurement result by the pulse-wave detection part of FIG. FIG. 13 is a diagram showing another characteristic of the pulse wave of FIG. 12. Is an example of the result of redetermination of the contact state information in FIG. These are an example of the measurement result by the pulse-wave detection part of FIG. These are an example of the measurement result by the optical sensor of FIG. Is an example of the result of correcting the measurement result of FIG. These are the front views of the biological information measuring device of Embodiment 5. FIG.

(An example of a form that the biological information measuring device can take)
[1] One form of the biological information measuring device according to the present invention is a biological information measuring device that measures an autonomic nerve function, and is a measurement surface that faces a measurement target region, information that is disposed on the measurement surface, and is related to pulse waves. Based on a pulse wave detection unit that detects certain pulse wave information, a contact detection unit that detects contact state information that is information reflecting a contact state between a measurement target region and a measurement surface, and pulse wave information and contact state information And an activity state measuring unit for measuring the activity state of the autonomic nerve function.

  According to this biological information measuring apparatus, not only the pulse wave information but also the contact state information is used for measuring the activity state of the autonomic nerve function. For this reason, when the contact state information suggests that the measurement target region and the measurement surface are not in proper contact, the activity state of the autonomic nerve function is measured based on the contact state information. For this reason, the autonomic nerve function is easily measured accurately.

[2] According to an example of the biological information measuring apparatus, the contact detection unit includes a temperature sensor disposed on the measurement surface.
The contact state between the measurement target region and the measurement surface is reflected on the temperature of the living body that can be measured from the biological information measuring device. For this reason, according to the said biological information measuring device provided with a temperature sensor, exact contact state information can be acquired based on the measurement result of a temperature sensor.

  [3] According to an example of the biological information measuring device, the pulse wave detection unit includes a light emitting unit and a light receiving unit arranged on a measurement surface formed in the biological information measurement device, and the contact detection unit is arranged on the measurement surface. Equipped with a light sensor.

  When a gap is formed between the measurement target site and the measurement surface, ambient light moves to the gap. For this reason, the contact state between the measurement target region and the measurement surface is reflected in the light incident on the measurement surface. For this reason, according to the said biological information measuring device provided with an optical sensor, exact contact state information can be acquired based on the measurement result of an optical sensor.

[4] According to an example of the biological information measuring device, the contact detection unit includes a pressure sensor disposed on the measurement surface.
The contact state between the measurement target region and the measurement surface is reflected in the pressure acting on the measurement surface when the measurement target region is in contact with the measurement surface. For this reason, according to the said biological information measuring device provided with a pressure sensor, exact contact state information is acquirable based on the measurement result of a pressure sensor.

  [5] According to an example of the biological information measuring device, the pulse wave determination that outputs pulse wave determination information that is information indicating whether or not the pulse wave is reflected in the pulse wave information detected by the pulse wave detection unit. The activity state measurement unit measures the activity state of the autonomic nervous function based on the pulse wave information, the contact state information, and the pulse wave determination information.

  Even when the measurement target part and the measurement surface are in proper contact, if the position of the pulse wave detector relative to the measurement target part is deviated from the position suitable for measurement, accurate pulse wave information may not be obtained. . According to the biological information measuring apparatus, since the pulse wave determination unit detects that the pulse wave is reflected in the pulse wave information, the possibility of obtaining an inaccurate measurement result regarding the activity state of the autonomic nerve function is reduced. Is done.

  [6] According to an example of the biological information measuring device, a notification unit that outputs information indicating that the position of the pulse wave detection unit with respect to the measurement target region is deviated from a position suitable for measurement based on the pulse wave determination information Is further provided.

  According to this biological information measuring apparatus, the user can recognize that the position of the pulse wave detection unit with respect to the measurement target region is deviated from the position suitable for measurement based on the information output from the notification unit. For this reason, the position of the pulse wave detection unit with respect to the measurement target region is corrected, and the opportunity for obtaining accurate pulse wave information increases.

(Embodiment 1)
The configuration of the biological information measuring apparatus 1 will be described.
As shown in FIG. 1, the biological information measuring apparatus 1 includes a main body 10 that stores components for measuring biological information, and a pair of mounting portions 13 that are attached to both sides of the main body 10. An example of the mounting portion 13 is a belt. A display unit 11 that displays biological information and the like is provided on the front surface 10 </ b> A of the main body 10. An example of the display unit 11 is a liquid crystal display. An input unit 12 is provided on the side surface 10 </ b> C of the main body 10. An example of the input unit 12 is an operation button.

  The biological information measuring apparatus 1 is attached to a wrist of a living body that is an example of a measurement target part. As shown in FIG. 2, the back surface 10 </ b> B of the main body 10 is a measurement surface that faces a measurement target site, and is provided with a light emitting unit 22 and a light receiving unit 23 of a pulse wave detection unit 21 that measures a pulse wave of a living body. . An example of the light emitting unit 22 is a green light emitting diode. An example of the light receiving unit 23 is a photodiode. Further, a temperature sensor 51 that measures the surface temperature of the measurement target part is provided.

  As shown in FIG. 3, the biological information measuring apparatus 1 is attached to the measurement target portion by the attachment unit 13. The light emitting unit 22 and the light receiving unit 23 (see FIG. 2) face the measurement target part and measure the pulse wave of the living body.

  With reference to FIG. 4, the control structure of the biological information measuring device 1 will be described. The biological information measuring apparatus 1 includes a pulse wave detection unit 21, a contact detection unit 36 that detects a contact state, a temperature sensor 51, a biological information measurement unit 30 that measures the activity state of the autonomic nerve function, a display unit 11, and a biological body. A portable information terminal 40 for displaying information and the like is provided. The biological information measurement unit 30 includes an activity state measurement unit 31 that measures the activity state of the living body, a storage unit 32 that stores the measured information, a nerve state determination unit 33 that determines the activity state of the autonomic nerve function, and a portable information terminal 40 is provided with a communication unit 34 for communicating with 40.

  The pulse wave detector 21 detects a pulse wave of a living body. First, the light emitting unit 22 irradiates the measurement target site with light. The light receiving unit 23 receives the light reflected by the measurement target part, and generates a light reception signal according to the received light quantity. Based on the received light signal, the pulse wave detector 21 detects a pulse wave.

  The contact detection unit 36 is in a state where the temperature of the living body surface measured by the temperature sensor 51, the wearing state in which the contact state between the measurement target region and the measurement surface is normal, and the measurement target region and the measurement surface are sufficiently separated. A temperature threshold that is a temperature for determining the non-wearing state is compared. And the contact state information which is the information in which the contact state of a measurement object site | part and a measurement surface was reflected is produced. Examples of the contact state information are a mounted state and a non-mounted state.

  The activity state measurement unit 31 calculates entropy E, which is an example of an autonomic nerve overall activity index, and tone T, which is an example of a parasympathetic nerve index, from the pulse wave detected by the pulse wave detection unit 21. First, a heartbeat interval PP, which is one course of heart contraction and relaxation, is calculated. The heartbeat interval PP is the period of the pulse wave, and is the time between the maximum value of the received light signal and the maximum value of the next received light signal. Next, a PI (Percentage Index) value indicating the change in the heartbeat interval PP as a percentage is calculated by the following equation [1].

Here, PP _i indicates the i-th measured heartbeat interval PP.
Then, the entropy E is calculated by the equation [2], which is the Shannon average information amount equation.

  Here, p (j) indicates the probability that the PI value obtained by the equation [1] is divided into N sections and a PI value is generated for the jth section.

  Further, the number of measured heartbeat intervals PP is M, and tone T is calculated by the following equation [3].

  The storage unit 32 stores the tone T and entropy E calculated by the activity state measurement unit 31 and pulse wave information that is information about the pulse wave measured by the pulse wave detection unit 21. An example of the pulse wave information is a pulse wave waveform. The storage unit 32 performs a storage operation at a predetermined sampling interval. For example, if the sampling interval is 1 hour, the data is stored 24 times a day.

  The nerve state determination unit 33 determines the active state of the autonomic nerve function using the tone T and entropy E read from the storage unit 32. As an example, the nerve state determination unit 33 uses the entropy E as an autonomic nerve overall activity index and the negative value of the tone T as a parasympathetic nerve index, and compares it with a predetermined threshold value to determine the activity state of the autonomic nerve function. Determine. An example of the threshold value is an average value of a living body of the same age as the living body to be determined or a past measurement value.

  The display unit 11 displays the determination result of the nerve state determination unit 33. A display example is shown in FIG. TX, TY, and TZ are values of the tone T, and EX, EY, and EZ are values of the entropy E, for example, an average value or a maximum value. When the contact state information is in a non-wearing state, a message indicating that the contact state information is not correctly attached is displayed.

  Further, the communication unit 34 transmits the determination result to the portable information terminal 40 by wireless communication. An example of wireless communication is Bluetooth (registered trademark). The portable information terminal 40 is a smartphone as an example, and can display the determination result on the screen.

  With reference to FIG. 6, the operation of biological information measuring apparatus 1 of the first embodiment will be described. The temperature sensor 51 measures the temperature of the living body surface. When the contact state information is the wearing state, that is, when the distance between the living body and the main body 10 is short, the temperature of the living body surface measured by the temperature sensor 51 is high. As the distance between the living body and the main body 10 increases, the temperature of the living body surface measured by the temperature sensor 51 decreases. When the contact state information is not attached, the temperature measured by the temperature sensor 51 is the outside air temperature.

  Then, the activity state measurement unit 31 compares the temperature threshold value that is a temperature for discriminating between the wearing state and the non-wearing state and a value measured by the temperature sensor 51. When the temperature sensor 51 measures a temperature equal to or higher than the temperature threshold, it is determined that the living body is correctly in contact with the measurement surface and is in a wearing state. When a temperature lower than the temperature threshold is measured, it is determined that the device is not attached.

According to the biological information measuring apparatus 1 of the first embodiment, the following effects can be obtained.
(1) A contact detection unit 36 that detects contact state information between a measurement target part and a measurement surface, and an activity state measurement unit 31 that measures an activity state of the autonomic nerve function based on pulse wave information and contact state information. . For this reason, when the contact state information suggests that the measurement target region and the measurement surface are not in proper contact, the activity state of the autonomic nerve function is measured based on the contact state information. Therefore, the autonomic nerve function is easily measured accurately.

  (2) Since the temperature sensor 51 arranged on the measurement surface is provided, the contact state between the measurement target portion and the measurement surface is reflected on the temperature of the living body that can be measured from the biological information measuring device 1, and accurate contact state information can be acquired. .

(Embodiment 2)
A configuration of the biological information measuring apparatus 1 according to the second embodiment will be described. The biological information measuring apparatus 1 according to the second embodiment is different from the first embodiment in that a pressure sensor 52 is provided.

  As shown in FIG. 7, the back surface 10 </ b> B of the main body 10 is a measurement surface, and is provided with a light emitting unit 22 and a light receiving unit 23 of a pulse wave detection unit 21 that measures a pulse wave of a living body. Furthermore, a pressure sensor 52 that measures the pressure generated by the contact between the living body and the main body 10 is provided.

  With reference to FIG. 8, the operation of the pressure sensor 52 and the contact detection unit 36 of the second embodiment will be described. The pressure sensor 52 measures the pressure generated by the contact between the measurement target part and the main body 10. In the wearing state, that is, when the gap between the measurement target portion and the main body 10 is small, the pressure measured by the pressure sensor 52 is high. As the gap between the measurement target portion and the main body 10 increases, the pressure measured by the pressure sensor 52 decreases. In the non-wearing state, the pressure measured by the pressure sensor 52 is only atmospheric pressure.

  Then, the contact detection unit 36 determines the contact state information based on a pressure threshold that is a pressure for determining the mounted state and the non-mounted state. When the pressure sensor 52 measures a pressure equal to or higher than the pressure threshold value, it is determined that the wearing state is set. When a pressure lower than the pressure threshold value is measured, it is determined that the device is not attached.

According to the biological information measuring apparatus 1 of the second embodiment, in addition to the effect (1) obtained by the biological information measuring apparatus 1 of the first embodiment, the following effects are further obtained.
(3) The contact detection unit 36 includes a pressure sensor 52 disposed on the measurement surface, and calculates a contact state between the measurement target region and the measurement surface. For this reason, the contact state between the measurement target region and the measurement surface is reflected on the temperature of the living body that can be measured from the biological information measuring apparatus 1, and accurate contact state information can be acquired.

(Embodiment 3)
A configuration of the biological information measuring apparatus 1 according to the third embodiment will be described. The biological information measuring apparatus 1 according to the third embodiment is different from the first embodiment in that an optical sensor 54 is provided.

  As shown in FIG. 9, the back surface 10 </ b> B of the main body 10 is a measurement surface, and the light emitting unit 22 and the light receiving unit 23 of the pulse wave detection unit 21 are provided. Further, a window 53 that collects disturbance light L, which is light that is inserted through a gap between the living body and the main body 10, is provided at a position away from the pulse wave detection unit 21.

  As shown in FIG. 10, an optical sensor 54 that measures the disturbance light L collected by the window 53 is provided inside the main body 10. An example of the optical sensor 54 is a photodiode.

  With reference to FIG. 11, operations of the optical sensor 54 and the contact detection unit 36 according to the third embodiment will be described. The optical sensor 54 measures the light intensity of the disturbance light L. In the wearing state, that is, when the gap between the measurement target region and the main body 10 is small, the disturbance light L is blocked and the light intensity of the disturbance light L measured by the optical sensor 54 is weak. As the gap between the measurement target portion and the main body 10 increases, the disturbance light L is inserted, and the light intensity of the disturbance light L measured by the optical sensor 54 increases. In the non-wearing state, the light intensity of the disturbance light L measured by the optical sensor 54 is the strongest.

  Then, a light threshold value, which is a light intensity value for discriminating between the wearing state and the non-wearing state, is set in advance. When the light sensor 54 measures the light intensity below the light threshold, it is determined that the disturbance light L is not inserted and the main body 10 is in the wearing state. When the light intensity stronger than the light threshold is measured, it is determined that the main body 10 is in a non-wearing state.

Further, since the window 53 and the optical sensor 54 are located away from the pulse wave detection unit 21, it is difficult for the optical sensor 54 to measure the light emitted from the light emitting unit 22 and to erroneously determine the disturbance light L.
According to the biological information measuring apparatus 1 of the third embodiment, in addition to the effect (1) obtained by the biological information measuring apparatus 1 of the first embodiment, the following effects are further obtained.

  (4) The contact detection unit 36 includes an optical sensor 54 disposed on the measurement surface. For this reason, when a gap is formed between the measurement target region and the measurement surface, the disturbance light L moves to the gap, and the contact state between the measurement target region and the measurement surface is reflected in the light incident on the measurement surface. Is done. Therefore, more accurate contact state information can be acquired.

(Embodiment 4)
A configuration of the biological information measuring apparatus 1 according to the fourth embodiment will be described. The biological information measuring apparatus 1 of the fourth embodiment is a pulse wave that is information indicating whether or not the pulse wave is reflected in the pulse wave information detected by the pulse wave detection unit 21 as compared with the first embodiment. The pulse wave determination unit 35 for generating the determination information is provided, and the contact state information is determined again.

  With reference to FIG. 12, a control configuration of biological information measuring apparatus 1 of the fourth embodiment will be described. The biological information measurement apparatus 1 includes a pulse wave detection unit 21, an optical sensor 54, a biological information measurement unit 30, a display unit 11, and a portable information terminal 40. The biological information measurement unit 30 includes a contact detection unit 36, a pulse wave determination unit 35, an activity state measurement unit 31, a storage unit 32, a nerve state determination unit 33, and a communication unit 34.

  The pulse wave detector 21 measures the pulse wave of the living body and transmits the pulse wave information to the contact detector 36. The contact detection unit 36 determines contact between the measurement target portion and the measurement surface based on the pulse wave information measured by the pulse wave detection unit 21. The optical sensor 54 transmits the waveform information of the received light to the pulse wave determination unit 35. The pulse wave determination unit 35 creates pulse wave determination information based on the waveform information of the light detected by the optical sensor 54.

  With reference to FIG. 13, the operation of the biological information measuring apparatus 1 of the fourth embodiment will be described. The pulse wave of a living body includes a minimum value A, a minimum value C, and a maximum value B of the pressure for each cycle of the heartbeat, and the systole TA of the heart, which is the time from the minimum value A to the maximum value B, and the maximum value B Can be classified as a diastole TB of the heart, which is a time from to the minimum value C. The pulse wave is characterized in that the systole TA is shorter than the diastole TB. Using the characteristics of the pulse wave, the pulse wave determination unit 35 determines that the waveform measured by the pulse wave detection unit 21 is a pulse wave if the systole TA is shorter than the diastole TB, and the pulse wave determination information Create

  Furthermore, the pulse wave has other characteristics. As shown in FIG. 14, the pulse wave has a minimum value D and a maximum value F in the diastole TB. When the minimum value D and the maximum value F are detected, it is determined as a pulse wave. When the systole TA is not shorter than the diastole TB and the minimum value D and the maximum value F are not detected, it is determined not to be a pulse wave and pulse wave determination information is created.

  With reference to FIG. 15, re-determination of contact state information will be described. When the contact state information is the wearing state and the pulse wave determination information is a pulse wave, the activity state measuring unit 31 re-determines the contact state information as the wearing state. When the contact state information is a non-wearing state and the pulse wave determination information is a pulse wave, the activity state measuring unit 31 re-determines a position shift state in which the mounting position of the main body 10 is shifted. When it is determined that the pulse wave determination information is not a pulse wave, the activity state measurement unit 31 re-determines that the state is not worn.

  In the case of the position shift state, the biological information measuring apparatus 1 can also correct the pulse wave. An example of correction will be described with reference to FIG. The pulse wave detector 21 detects the signal A0 from the time t0 to the time t1, and detects the signal A1 from the time t1 to the time t2. For the signal A0, the contact state information is a wearing state, and the pulse wave determination information is a pulse wave. For the signal A1, the contact state information is a non-wearing state, and the pulse wave determination information is a pulse wave. Here, the signal A0 is re-determined as a wearing state, and the signal A1 is re-determined as a misalignment state.

  Since the disturbance light L is presumed to be mixed in the signal A1 that is in the misalignment state, the difference between the signal A1 and the signal B1 (see FIG. 17) detected by the optical sensor 54 is obtained. And the signal C1 (refer FIG. 18) from which the disturbance light L was removed is obtained, and correction | amendment is implemented. Further, the activity state of the autonomic nerve function is measured based on the signal C1.

  According to the biological information measuring apparatus 1 of the fourth embodiment, in addition to the effects (1) and (4) obtained by the biological information measuring apparatus 1 of the first and third embodiments, the following effects are further obtained. It is done.

  (5) A pulse wave determination unit 35 is further provided, and pulse wave determination information, which is information indicating whether or not the pulse wave information detected by the pulse wave detection unit 21 is a pulse wave, is created and shifted from a position suitable for measurement. It is determined whether or not. For this reason, it is easy to remove the activity state of the autonomic nerve function when it is not worn correctly.

(Embodiment 5)
A configuration of biological information measuring apparatus 1 according to the fifth embodiment will be described. The biological information measuring apparatus 1 of Embodiment 5 is a point provided with the alerting | reporting part 14 which outputs a position shift state compared with Embodiment 1. FIG.

  As shown in FIG. 19, the biological information measuring apparatus 1 according to the fifth embodiment includes a main body 10 and a mounting portion 13. A display unit 11 is provided on the front surface 10 </ b> A of the main body 10. An input unit 12 is provided on the side surface 10 </ b> C of the main body 10.

  Further, a notification unit 14 is provided. An example of the notification unit 14 is a display lamp. For example, green is lit when the mounted state is good, yellow is lighted when the position is shifted, and red is lighted when not mounted. For this reason, the living body can recognize the wearing state. Therefore, by correcting the position of the main body 10 or remounting the mounting portion 13, it is possible to measure the more accurate activity state of the autonomic nerve function.

  According to the biological information measuring apparatus 1 of the fifth embodiment, in addition to the effects (1), (4) and (5) obtained by the biological information measuring apparatus 1 of the first, third and fourth embodiments, The effects shown are further obtained.

  (6) Since the notification unit 14 that outputs information indicating that the position of the pulse wave detection unit 21 with respect to the living body is deviated from a position suitable for measurement is provided, it can be recognized that the position is in a misalignment state. Therefore, the position of the pulse wave detection unit 21 with respect to the living body is corrected, and the opportunity for obtaining accurate pulse wave information increases.

(Modification)
The description regarding each said embodiment is an illustration of the form which the biological information measuring device according to this invention can take, and it does not intend restrict | limiting the form. In addition to the embodiment, the biological information measurement control device according to the present invention can take a form in which, for example, modifications of the above-described embodiments described below and at least two modifications not contradicting each other are combined.

The main body 10 may be attached to a part other than the wrist of a living body, such as a finger, an ankle, a forehead, a chest, a shoulder, and an ear.
-The autonomic nerve index is LF / HF, which is the ratio of the LF (Low Frequency) component to the HF (Hi Frequency) component of the frequency analysis method, or the sum of the VLF (Very Low Frequency) component, the LF component, and the HF component. You may use the total power which is.

  The portable information terminal 40 may be a tablet information terminal or a notebook personal computer instead of the smartphone. The external device including the portable information terminal 40 is not limited to a portable type, and may be a desktop personal computer or other stationary information terminal.

-You may convert the surface temperature of the biological body which the temperature sensor 51 measured into body temperature.
-The contact detection part 36 may be provided with the perspiration sensor which measures perspiration.
-The alerting | reporting part 14 may be provided with the speaker alert | reported by a sound and the vibrator alert | reported by a vibration.

  The living body may be an animal, not limited to a human, by adjusting a threshold value for determining the activity state of the autonomic nervous function.

  Since the biological information measurement control device according to one aspect of the present invention can measure the activity state of the autonomic nerve function with high accuracy, measurement of the activity state of the autonomic nerve function during sports, baby, elderly, or It can be used for measuring animals.

DESCRIPTION OF SYMBOLS 1: Biological information measuring device 14: Notification part 21: Pulse wave detection part 22: Light emission part 23: Light reception part 31: Activity state measurement part 35: Pulse wave determination part 50: Contact detection part 51: Temperature sensor 52: Pressure sensor 54 : Light sensor

Claims (6)

A biological information measuring device for measuring autonomic nerve function,
A measurement surface facing the measurement target part;
A pulse wave detection unit that is disposed on the measurement surface and detects pulse wave information that is information about the pulse wave;
A contact detection unit that detects contact state information that is information reflecting a contact state between the measurement target region and the measurement surface;
A biological information measurement device comprising: an activity state measurement unit that measures an activity state of an autonomic nerve function based on the pulse wave information and the contact state information. The biological information measurement device according to claim 1, wherein the contact detection unit includes a temperature sensor disposed on the measurement surface. The pulse wave detection unit includes a light emitting unit and a light receiving unit arranged on a measurement surface formed in the biological information measuring device,
The biological information measuring device according to claim 1, wherein the contact detection unit includes an optical sensor disposed on the measurement surface. The biological information measurement device according to claim 1, wherein the contact detection unit includes a pressure sensor arranged on the measurement surface. A pulse wave determination unit that outputs pulse wave determination information that is information indicating whether or not a pulse wave is reflected in the pulse wave information detected by the pulse wave detection unit;
The biological information measuring device according to claim 3, wherein the activity state measuring unit measures an activity state of an autonomic nerve function based on the pulse wave information, the contact state information, and the pulse wave determination information. The biological information according to claim 5, further comprising: a notification unit that outputs information indicating that the position of the pulse wave detection unit with respect to the measurement target part is shifted from a position suitable for measurement based on the pulse wave determination information. Measuring device.