JP2016140553A - Respiration determination device, respiration determination method, respiration determination program, and determination system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a respiratory determination device for accurately determining a respiratory arrest state from a pulse interval excluding fluctuations between individuals. SOLUTION: A breathing determination device 10 analyzes a biological information detecting means 40 for detecting a pulse wave signal and a breathing state during sleep based on the detected pulse wave signal, and breathing during sleep based on the analysis result. The control means 20 includes a control means 20 for generating breathing information indicating a state, and the control means 20 breathes based on a pulse wave signal detected when the breathing is stopped for a predetermined time during awakening and the breathing is resumed. Criteria for determining stop are set, and respiratory information is generated based on the criteria and the pulse wave signal detected during sleep. [Selection diagram] Fig. 1

Description

  The present invention relates to a breath determination apparatus, a breath determination method, a breath determination program, and a determination system.

  Conventionally, the determination of an apnea state or a hypopnea state during sleep is performed based on biological signals such as heart rate variability, pulse variability, electroencephalogram analysis, eye movement, and electromyogram as shown in Patent Document 1 below. Yes. Among them, in order to acquire EEG analysis, eye movement and electromyogram biosignals, complicated devices and equipment are required in the medical field etc., but heart rate variability and pulse variability are different from other biosignals. Since it can be easily detected by comparison, a wearable device that detects heartbeat fluctuations and pulse fluctuations to easily determine a respiratory state during sleep is expected.

JP 2010-51387 A

  However, heart rate variability and pulse variability are susceptible to high-order functions (brain activity, body movement), biological activity, autonomic nervous activity, etc., and there is a problem that measurement accuracy decreases when inter-individual variation is included. .

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

[Application Example 1]
The respiratory determination device according to this application example analyzes a respiratory state during sleep based on a pulse wave detection unit that detects a pulse wave signal, and the pulse wave signal detected by the pulse wave detection unit, and based on the analysis result And analyzing means for generating respiratory information indicating a respiratory state during sleep, wherein the analyzing means stops the breathing for a predetermined time during awakening and detects the pulse detected when the breathing is resumed. A determination criterion for determining respiratory stop is set based on a wave signal, and the respiratory information is generated based on the determination criterion and the pulse wave signal detected during sleep.

  According to such a configuration, a determination criterion for analyzing the pulse wave signal detected when the breathing is stopped for a predetermined time during the awakening and restarting is generated to determine the respiratory stop, and the created determination Since the respiratory information is generated based on the reference and the pulse wave signal detected during sleep, since the determination reference is generated for each individual, the variation between individuals can be excluded, so the appearance of the respiratory stop state can be accurately determined. it can.

[Application Example 2]
In the respiratory determination device according to the application example, it is preferable that the analysis unit determines the determination criterion based on a pulse interval calculated from the pulse wave signal detected when the breathing is resumed.

  According to such a configuration, the pulse interval is calculated from the pulse wave signal detected from the resumption of breathing, and the determination criterion is determined based on the calculated pulse interval. Therefore, according to the fluctuation characteristics of the pulse interval at the time of resuming breathing. Judgment criteria can be determined.

[Application Example 3]
In the respiratory determination device according to the application example described above, the determination criterion is based on the pulse interval when the breathing is resumed as a reference value, the amount of fluctuation that the pulse interval varies with time, and the pulse interval that has changed. Is preferably determined based on time information required to restore the reference value.

  According to such a configuration, the determination reference can be defined by the amount of change in which the pulse interval varies with time and the time information required for the changed pulse interval to be restored to the reference value.

[Application Example 4]
In the respiratory determination device according to the application example, the determination criterion may be determined based on a variation waveform in which the pulse interval varies with time, or a result of frequency analysis of the variation waveform.

[Application Example 5]
In the respiratory determination device according to the application example, the analysis unit calculates a pulse interval from the pulse wave signal detected during respiratory stop and after resumption of breathing, and determines the determination criterion based on the calculated pulse interval. May be.

[Application Example 6]
In the respiratory determination device according to the application example, the analysis unit calculates a pulse interval from the pulse wave signal detected before breathing is stopped, during breathing is stopped, and after breathing is resumed, and the determination is performed based on the calculated pulse interval. A standard may be determined.

[Application Example 7]
In the respiratory determination device according to the application example, it is preferable that the predetermined time is a plurality of periods, and the analysis unit generates the determination criterion based on at least one of the plurality of periods.

  According to such a configuration, it is possible to generate a determination criterion according to the respiratory stop time that occurs during sleep by generating the determination criterion at regular intervals.

[Application Example 8]
In the respiratory determination device according to the application example described above, it is preferable that notification means for notifying the respiratory information is provided, and the notification means notifies the determination criterion.

  According to such a configuration, it is possible to notify the user that the determination criterion has been generated.

[Application Example 9]
In the respiratory determination device according to the application example, the analysis unit calculates a variation pattern of the pulse interval over time from the pulse wave signal detected at the time of sleep, and when the determination criterion matches in the variation pattern, It is preferable to determine that the breathing is stopped.

  According to such a configuration, it is possible to determine the breathing stop state based on the determination criterion by determining a match with the determination criterion in the fluctuation pattern of the pulse interval detected during sleep.

[Application Example 10]
In the breath determination apparatus according to the application example, the breath information may indicate at least one of the number of appearances of the breathing stop state, the duration of the breathing stop state, and the number of appearances of the breathing stop state per unit time. preferable.

[Application Example 11]
The respiratory determination device according to the application example includes body movement detection means for detecting body movement, and the analysis means has the body movement detection means exceeding a predetermined range when the breathing is stopped. When motion is detected, or when the pulse rate indicated by the pulse wave signal exceeds a predetermined range, it is preferable to restart from the stop of the breathing.

  According to such a configuration, when the body motion detection unit detects body motion exceeding a predetermined range, or when the pulse rate indicated by the pulse wave signal exceeds the predetermined range, the user is allowed to try again. It is possible to generate a judgment criterion having high characteristics.

[Application Example 12]
The respiratory determination method according to this application example includes a pulse wave detection step for detecting a pulse wave signal, and the pulse wave signal detected when the breathing is stopped after being stopped for a predetermined time during awakening. A determination criterion generation step for analyzing and generating a determination criterion for determining breathing stop; a respiration information generation step for generating respiration information based on the determination criterion and the pulse wave signal detected during sleep; It is characterized by having.

  According to such a method, a determination criterion for determining a respiratory stop is generated by analyzing a pulse wave signal detected when breathing is stopped and resumed for a predetermined time during awakening, and the created determination Since the respiratory information is generated based on the reference and the pulse wave signal detected during sleep, since the determination reference is generated for each individual, the variation between individuals can be excluded, so the appearance of the respiratory stop state can be accurately determined. it can.

[Application Example 13]
The respiratory determination program according to this application example analyzes a respiratory state during sleep based on a pulse wave detection function for detecting a pulse wave signal and the pulse wave signal detected by the pulse wave detection means, and based on the analysis result An analysis function for generating breathing information indicating a respiratory state during sleep, and the analysis function is detected when the breathing is stopped after being stopped for a predetermined time during awakening. A determination criterion for determining respiratory stop is set based on the pulse wave signal, and the respiratory information is generated based on the determination criterion and the pulse wave signal detected during sleep.

  According to such a configuration, a determination criterion for analyzing the pulse wave signal detected when the breathing is stopped for a predetermined time during the awakening and restarting is generated to determine the respiratory stop, and the created determination Since the respiratory information is generated based on the reference and the pulse wave signal detected during sleep, since the determination reference is generated for each individual, the variation between individuals can be excluded, so the appearance of the respiratory stop state can be accurately determined. it can.

[Application Example 14]
The respiratory determination system according to this application example analyzes a respiratory state during sleep based on a pulse wave detection unit that detects a pulse wave signal, and the pulse wave signal detected by the pulse wave detection unit, and based on the analysis result And analyzing means for generating respiratory information indicating a respiratory state during sleep, wherein the analyzing means stops the breathing for a predetermined time during awakening and detects the pulse detected when the breathing is resumed. A determination criterion for determining respiratory stop is set based on a wave signal, and the respiratory information is generated based on the determination criterion and the pulse wave signal detected during sleep.

  According to such a configuration, a determination criterion for analyzing the pulse wave signal detected when the breathing is stopped for a predetermined time during the awakening and restarting is generated to determine the respiratory stop, and the created determination Since the respiratory information is generated based on the reference and the pulse wave signal detected during sleep, since the determination reference is generated for each individual, the variation between individuals can be excluded, so the appearance of the respiratory stop state can be accurately determined. it can.

The block diagram which shows the function structure of the respiration determination apparatus which concerns on Embodiment 1 of this invention. FIG. The figure which shows the hardware constitutions of a respiration determination apparatus. The figure which shows the output example of the pulse interval for demonstrating a template. The figure which shows the screen transition displayed on a display part, when setting a template. The figure which shows an example which displayed the pulse interval memorize | stored during sleep according to progress of time. The figure which shows the screen transition in case a user wears a respiration determination apparatus and sleeps. The block diagram which shows the function structure of the determination system which concerns on Embodiment 2 of this invention.

  Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1)
FIG. 1 is a block diagram illustrating a functional configuration of the breath determination apparatus 10. FIG. 2 is an external view of the breath determination apparatus 10. Further, FIG. 3 is a diagram illustrating a hardware configuration of the breath determination apparatus 10.
In the first embodiment, it is assumed that the breathing determination apparatus 10 is used by being worn on the user's body like a wristwatch, and the main body 12 is attached to the user's wrist BD via the belt 14. The body part to be worn may be the upper arm or the chest.
As shown in FIG. 1, the respiratory determination device 10 includes a biological information detection unit 40, a body motion detection unit 42, an operation unit 44, a notification unit 46, a communication unit 48, a control unit 20, and a storage unit 50.
The control unit 20 has a function of controlling the breathing determination apparatus 10 and includes a pulse interval calculation unit 22, a template generation unit 24, and a sleep state analysis unit 32. The control means 20 corresponds to analysis means.

Further, the template generation means 24 corresponds to a determination reference generation means having a determination reference generation function, and has a function of generating a determination reference (template) for determining breathing stop, an operation instruction means 26, an effective determination means. 28 and a template setting means 30. The sleep state analysis unit 32 corresponds to a respiratory information generation unit having a respiratory information generation function, has a function of analyzing a user's sleep state and respiratory state, and includes a sleep determination unit 34 and a breath determination unit 36.
As shown in FIG. 3, the breath determination apparatus 10 includes an A / D circuit 150, a CPU (Central Processing Unit) 154, a ROM (Read Only Memory) 156, a communication circuit 158, a liquid crystal display circuit 162, a RAM (Random Access). Memory) 164 and flash memory 166. These pieces of hardware are connected via a bus 168 and function as a kind of computer. Further, a pulse wave sensor 170 and a body motion sensor 175 are connected to the A / D circuit 150 that converts an analog signal into a digital signal. A liquid crystal panel 180 is connected to the liquid crystal display circuit 162.

Each function unit illustrated in FIG. 1 realizes each function by the cooperation of the hardware illustrated in FIG. 3 and the software stored in the ROM 156, the RAM 164, and the flash memory 166.
The biological information detection means 40 has a pulse wave detection function, detects a pulse wave signal indicating the pulse wave of the user wearing the respiration determination device 10, and sends the pulse wave information based on the detected pulse wave signal to the control means 20. send.
In the first embodiment, the pulse wave signal is detected by the pulse wave sensor 170. The pulse wave sensor 170 is a photoelectric pulse wave sensor and a pulse wave sensor based on the principle thereof, and is embedded on the back surface of the main body 12, that is, on the side facing the wrist BD. Although not shown, the pulse wave sensor 170 receives light reflected from the light source such as an LED and the light output from the light source by the blood vessel of the user's wrist BD and converts it into an electrical signal corresponding to the pulse wave signal. And a function of amplifying an electric signal.

The body motion detection unit 42 detects a body motion signal indicating the body motion of the user who wears the respiratory determination device 10 on the wrist BD, and sends body motion information based on the detected body motion signal to the control unit 20.
In the first embodiment, the body motion signal is detected by the body motion sensor 175. The body motion sensor 175 is assumed to be an acceleration sensor or a gyro sensor, and has a function of detecting a user's body motion and outputting an electrical signal derived from the body motion.
The electrical signals output from the pulse wave sensor 170 and the body motion sensor 175 are converted into digital signals by the A / D circuit 150 and sent to the CPU 154 and the flash memory 166.
The operation means 44 has a function for the user to operate the breath determination apparatus 10. In the first embodiment, operation buttons 45A and 45B provided on the side of the main body 12 are assumed.

The notification means 46 has a notification function and a function that the breath determination apparatus 10 notifies the user. In the first embodiment, it is assumed that the display unit 47 is embedded on the surface of the main body 12, that is, on the side that can be visually recognized by the user when the respiratory determination device 10 is attached to the wrist BD. A liquid crystal panel 180 is mounted on the display unit 47, and the user can visually recognize various information displayed on the liquid crystal panel 180.
The notification unit 46 is not limited to display on the display unit 47. For example, a speaker, a buzzer, or the like is mounted on the breathing determination device 10, and a mode of notifying the user by sound or vibration of voice or the like is also possible. Can be assumed.

The communication means 48 has a function of exchanging various information with an external information device. In the first embodiment, the communication circuit 158 implemented in the respiration determining device 10 communicates via wireless according to a short-range wireless communication standard protocol such as WiFi (registered trademark) or Bluetooth (registered trademark). To do. For example, the communication means 48 can assume a mode in which the sleep state information determined by the respiration determination device 10 is transmitted to an external information processing terminal, server, or the like.
The storage unit 50 has a function of storing various data processed by the control unit 20 assuming the RAM 164 and the flash memory 166.
Based on the operation instructions from the template generation unit 24 and the sleep state analysis unit 32, the pulse interval calculation unit 22 calculates the extreme value of the pulse wave signal that changes with the passage of time from the pulse wave information output from the biological information detection unit 40. The time interval between the extracted extreme values, that is, the pulse interval indicating the period of the pulse wave is calculated. The calculated pulse interval is sequentially stored in the storage means 50 in association with time information that has elapsed since the calculation was started.

The operation instruction means 26 has a function of giving a predetermined operation instruction to an awakening user when generating a template. The predetermined operation instruction is, for example, a breathing stop instruction or a breathing instruction over a predetermined time of 5 seconds or 10 seconds in a resting state, and the operation instruction unit 26 performs an operation instruction to the user based on an instruction from the control unit 20. Is notified from the notification means 46. Further, when generating the template, the operation instruction unit 26 instructs the pulse interval calculation unit 22 to calculate the pulse interval.
When the template is generated, the validity determination unit 28 determines whether or not the pulse interval calculated in the operation state instructed by the operation instruction unit 26 is valid. In the first embodiment, body motion information output by the body motion detection unit 42 is analyzed, and when a body motion exceeding a predetermined standard in the motion state instructed by the motion instruction unit 26, that is, when a non-resting state is detected, When the fluctuation of the pulse rate before the stop exceeds a predetermined range, it is determined that the calculation of the pulse interval is invalid.

When the validity determination unit 28 determines invalidity for the calculation of the pulse interval, the notification unit 46 notifies the user that the pulse interval cannot be calculated correctly.
The template setting unit 30 sets a template based on the pulse interval calculated in the operation state instructed by the operation instruction unit 26.
Here, template setting will be described with reference to FIGS. 4 and 5. FIG. FIG. 4 is an output example of a pulse interval for explaining the template. The lower row shows changes in the user's respiratory state over time, and the upper row shows changes in the user's pulse interval calculated in accordance with the passage of time in the lower row. FIG. 5 is a diagram showing the transition of the screen displayed on the display unit 47 by the operation instruction means 26 when setting templates corresponding to a plurality of breathing stop times, and shows a determination criterion generation step.

As shown in FIG. 5, when the process of setting a template is started, a pulse wave detection step in which the biological information detection means 40 detects a pulse wave signal is executed, and the operation instruction means 26 is replaced with the normal screen 60A. A notice screen 60B for announcing the stoppage of breathing is displayed on the display unit 47 (time t1), and a normal breathing state is instructed. The pulse interval calculation unit 22 receives an operation start instruction from the template generation unit 24 and sequentially stores the calculated pulse intervals in the storage unit 50.
At time t <b> 2, the operation instruction unit 26 displays on the display unit 47 a breathing stop instruction screen 60 </ b> C that instructs to stop breathing for 5 seconds.
At time t3 when 5 seconds have elapsed from time t2, the operation instruction unit 26 displays a respiration resumption instruction screen 60D instructing resumption of respiration on the display unit 47.

The pulse interval calculation means 22 continues storing the pulse interval until a predetermined time elapses after resuming breathing, and ends the storage of the pulse interval at time t5. The information of the pulse interval memorized by a series of processings is memorized as change of the pulse interval accompanying the breathing stop for 5 seconds.
Subsequently, the operation instruction unit 26 acquires the fluctuation of the pulse interval associated with the breathing stop for 10 seconds. That is, the operation instruction unit 26 displays a notice screen 60E for notifying the stop of breathing on the display unit 47 and instructs a normal breathing state. Further, the pulse interval calculation unit 22 sequentially stores the calculated pulse intervals in the storage unit 50.
Subsequently, the operation instruction unit 26 displays a breath stop instruction screen 60 </ b> F on the display unit 47 for instructing to stop breathing for 10 seconds.

Subsequently, after 10 seconds have elapsed, the operation instruction unit 26 displays a respiration resumption instruction screen 60 </ b> G for instructing resumption of respiration on the display unit 47.
The pulse interval calculation means 22 continues storing the pulse interval until a predetermined time elapses after resuming breathing, and ends the storage of the pulse interval. The information of the pulse interval memorized by a series of processings is memorized as change of the pulse interval accompanying 10 seconds of breathing stop.
If the validity determination means 28 does not determine invalidity of the pulse interval calculation during a series of processing, the template generation means 24 displays an end screen 60H on the display unit 47 indicating that the measurement for setting the template has ended. indicate.
Subsequently, the template setting unit 30 starts analyzing the pulse interval stored in the storage unit 50. First, the template setting means 30 pays attention to a change in the pulse interval starting from the time when respiration is resumed, that is, a phenomenon in which the pulse interval rapidly decreases so that the blood oxygen saturation concentration in the body is replenished when resuming respiration. To do.

In the first embodiment, the template setting unit 30 sets a plurality of different fixed times, such as 5 seconds, 10 seconds, and 20 seconds, as the respiratory stop time, and the amount of fluctuation that appears with the time fluctuation after resuming breathing, that is, the pulse The decrease value IP of the interval and the return required time DW until the decreased pulse interval is restored to the pulse interval at the time of resumption of breathing are respectively acquired and determined as templates. That is, the template defines the pulse interval decrease value IP and the return required time DW. The template setting unit 30 stores the template thus determined in the storage unit 50. The pulse interval decrease value IP indicates a change value from the average value of the pulse interval.
In addition, the template is not limited to the above-described decrease value IP of the pulse interval at the time of resuming breathing and the required recovery time DW, and the template may further include a change characteristic of the pulse interval at the time of breathing stop DS. A template may be set including the change characteristics of the pulse interval in the predetermined time DB before stopping breathing.

The template setting unit 30 notifies the user via the notification unit 46 when the template is correctly set. Moreover, the template setting means 30 may request the user to regenerate the template when the template cannot be set correctly.
Moreover, the template memorize | stored in the memory | storage means 50 may be managed for every user, and may be memorize | stored as a template effective over a predetermined period.
Returning to FIG. 1, when the sleep determination unit 34 is instructed to perform a breath determination during sleep, the pulse wave signal output from the biological information detection unit 40 or the body movement signal output from the body movement detection unit 42. Based on the above, it is determined whether or not the user is in a sleep state.
For example, a technique disclosed in Japanese Patent Application Laid-Open No. 2005-198829 is applied as a method for analyzing a pulse wave signal or a body motion signal to determine whether it is a sleep state or an awake state. it can.

When it is determined that the user is in the sleep state, the sleep determination unit 34 instructs the pulse interval calculation unit 22 to calculate the pulse interval. In addition, when it is determined that the user has transitioned from the sleep state to the awake state, the sleep determination unit 34 instructs the pulse interval calculation unit 22 to end the calculation of the pulse interval.
The breath determination unit 36 reads out the pulse interval and the template stored in the storage unit 50, and searches for a portion where the fluctuation pattern of the pulse interval matches the template, so that the apnea state (respiration stop state) during sleep can be obtained. Determine the appearance.

Here, the determination of the sleep state during sleep will be described with reference to FIGS. 6 and 7. FIG. 6 is an example in which the pulse interval stored during sleep is displayed as time elapses. FIG. 7 shows an example of screen transition when the user wears the breathing determination apparatus 10 to set a template and goes to bed.
When the user instructs sleep determination, the sleep state analysis unit 32 displays the normal screen 70 </ b> A on the display unit 47.
When the sleep determination unit 34 determines the user's sleep, the sleep state analysis unit 32 displays the sleep state screen 70 </ b> B on the display unit 47. Here, a respiratory information generation step is performed in which a pulse wave signal detected during sleep is analyzed to determine the appearance of a respiratory stop state, and respiratory information is generated based on the determined result.

Thereafter, when the sleep determination unit 34 determines the user's awakening, the sleep state analyzing unit 32 displays the awakening state screen 70 </ b> C on the display unit 47.
Thereafter, the breath determination unit 36 starts to analyze the pulse interval that fluctuates over time, and extracts a portion that matches the template.
In the first embodiment, the breath determination unit 36 first extracts a point of interest in which the decrease value of the pulse interval approximates the decrease value IP within a predetermined range, and then the required time until returning at the extracted point of interest. It is determined whether or not the time and the return required time DW are approximated within a predetermined range, but the present invention is not limited to this. The breath determination means 36 determines whether or not the point of interest indicates an apnea state based on the determination result thus obtained.

For example, in FIG. 6, it is determined that four locations NB1 to NB4 are in an apnea state from the variation pattern of the pulse interval. The breath determination unit 36 stores information on the location determined to be an apnea state in the storage unit 50.
When the breath determination unit 36 ends the analysis of the pulse interval, the sleep state analysis unit 32 creates an analysis result (respiration information) based on the information on the apnea state stored in the storage unit 50, and the created analysis. A notification process for displaying the analysis screen 70D showing the result on the display unit 47 is executed.
In the first embodiment, the analysis result assumes the number of appearances of apnea, the accumulated time (duration) of the apnea, the average number of occurrence of the apnea per hour (AHI), and the like. .

  In the first embodiment, the respiratory state in the sleep state is analyzed in the state where the user has awakened, but an aspect in which the analysis is performed in real time during sleep can be assumed.

According to Embodiment 1 described above, there exist the following effects.
(1) Since the respiratory state during sleep is determined based on the pulse wave, the appearance of the apnea state during sleep can be acquired easily and inexpensively.
(2) Since the template for detecting an apnea state is set for each user based on a plurality of breathing stop times, the apnea state during sleep can be accurately determined by excluding individual differences.

(Embodiment 2)
Next, Embodiment 2 of the present invention will be described with reference to FIG. In the following description, the same parts as those already described are denoted by the same reference numerals and description thereof is omitted.
In the first embodiment, the breath determination apparatus 10 performs the steps from the detection of the pulse wave to the apnea determination during sleep alone. However, in the second embodiment, the breath determination apparatus 10 and the information processing apparatus 100 are divided. The determination system 5 is configured.
Here, the information processing apparatus 100 may be a high-functional portable electronic device such as a smartphone or a server device on a network, and can directly or indirectly communicate with the breath determination apparatus 10 by wire or wireless. Yes, any device that performs breathing determination based on information acquired from the breathing determination device 10 may be used.
In this embodiment, in order to simplify the description, the determination system 5 exemplifies the determination system 5 in which the breath determination apparatus 10 and the information processing apparatus 100 are connected via a network 120 by communication.

The information processing apparatus 100 includes a communication unit 102 that communicates with a network 120, a storage unit 50, and a control unit 110. The control unit 110 includes a template setting unit 30 and a breath determination unit 36.
When the determination system 5 generates a template, the breath determination apparatus 10 performs an operation instruction for generating a template and determines whether the calculated pulse interval is valid. The template is set by the template setting unit 30 of the information processing apparatus 100. Do. The template set by the template setting unit 30 is stored in the storage unit 50.
When the sleep state is analyzed by the determination system 5, the respiration determination device 10 determines the user's sleep, and the respiration determination unit 36 of the information processing device 100 determines the apnea state. The analysis result of the respiratory state during sleep is transmitted from the information processing apparatus 100 to the respiratory determination apparatus 10 and displayed on the display unit 47.

  In addition, the function unit of the control unit 20 can also be assumed to be an aspect of the information processing apparatus 100, that is, a smartphone or a server apparatus. In addition, the display unit 47 that is one of the notification units 46 may be provided in the information processing apparatus 100.

According to the second embodiment described above, in addition to the effects described in the first embodiment, the following effects can be obtained.
(3) Since the information processing apparatus 100 takes charge of the template setting process and the breath determination process, the processing amount processed by the breath determination apparatus 10 can be reduced, and the breath determination apparatus 10 can be reduced in size and weight.

Although the embodiment of the present invention has been described with reference to the drawings, the specific configuration is not limited to this embodiment, and includes design changes and the like within a scope not departing from the gist of the present invention. For example, the breath determination apparatus 10 may include a device for determining whether or not an instruction to stop breathing is followed when generating a template. As such a device, a flow sensor, a pressure sensor, a microphone, or the like using a thermocouple or a thermistor can be assumed.
In addition, the breath determination apparatus 10 detects SpO ₂ using red light and infrared light, and adopts a function of detecting a decrease in the oxygen concentration in the blood, so that the apnea state can be more accurately detected. A mode of detection can also be assumed.

Further, the template may be determined based on a fluctuation waveform in which the pulse interval changes with time, or a result of frequency analysis of the fluctuation waveform.
Moreover, the biological information detection means 40 has an electrocardiogram waveform detection function, and may perform a breathing determination by executing a process as shown in FIG.
Moreover, each function part of the control means 20 shown in FIG. 1 and the control means 110 shown in FIG. 8 is a function implement | achieved by cooperation with the hardware mentioned above and software, for example, a breath determination program, for example. The specific configuration is not particularly limited. Therefore, it is not always necessary to mount hardware corresponding to each function unit individually, and it is of course possible to realize a function of a plurality of function units by one processor executing a program.
Also, some of the functions realized by software may be realized by hardware, or some of the functions realized by hardware may be realized by software. In addition, specific detailed configurations of other parts can be arbitrarily changed without departing from the gist of the present invention.

  DESCRIPTION OF SYMBOLS 5 ... Determination system, 10 ... Respiration determination apparatus, 12 ... Main-body part, 14 ... Belt, 20 ... Control means, 22 ... Pulse interval calculation means, 24 ... Template generation means, 26 ... Operation instruction means, 28 ... Validity determination means, DESCRIPTION OF SYMBOLS 30 ... Template setting means, 32 ... Sleep state analysis means, 34 ... Sleep determination means, 36 ... Respiration determination means, 40 ... Biological information detection means, 42 ... Body motion detection means, 44 ... Operation means, 45A, 45B ... Operation button 46 ... notification unit, 47 ... display unit, 48 ... communication unit, 50 ... storage unit, 60A ... normal screen, 60B ... notification screen, 60C ... breathing stop instruction screen, 60D ... respiration resumption instruction screen, 60E ... notification screen, 60F ... Respiration stop instruction screen, 60G ... Respiration resumption instruction screen, 60H ... End screen, 70A ... Normal screen, 70B ... Sleep state screen, 70C ... Awake state screen, 70D ... Analysis 100: Information processing apparatus, 102: Communication means, 110: Control means, 120 ... Network, 150 ... A / D circuit, 154 ... CPU, 156 ... ROM, 158 ... Communication circuit, 162 ... Liquid crystal display circuit, 164 ... RAM, 166, flash memory, 168, bus, 170, pulse wave sensor, 175, body motion sensor, 180, liquid crystal panel.

Claims (14)

Pulse wave detection means for detecting a pulse wave signal;
Analyzing the respiratory state during sleep based on the pulse wave signal detected by the pulse wave detecting unit, and generating respiratory information indicating the respiratory state during sleep based on the analysis result,
The analysis means sets a determination criterion for determining breathing stop based on the pulse wave signal detected when the breathing is stopped for a predetermined time during awakening and the breathing is resumed. A respiration determination device that generates the respiration information based on a reference and the pulse wave signal detected during sleep. In the respiratory determination device according to claim 1,
The respiration determination device, wherein the analysis means determines the determination criterion based on a pulse interval calculated from the pulse wave signal detected when the respiration is resumed. In the respiratory determination device according to claim 2,
The determination criterion is based on the pulse interval when the breathing is resumed as a reference value, and the amount of fluctuation that the pulse interval varies with time, and the fluctuation pulse interval required to restore the reference value. A respiration determination device characterized by being determined based on time information. In the respiratory determination device according to claim 2,
The determination criterion is determined based on a fluctuation waveform in which the pulse interval varies with time, or a result of frequency analysis of the fluctuation waveform. In the respiratory determination device according to claim 1,
The respiration determination device, wherein the analysis means calculates a pulse interval from the pulse wave signal detected during respiration stop and after resumption of respiration, and determines the determination criterion based on the calculated pulse interval. In the respiratory determination device according to claim 1,
The analyzing means calculates a pulse interval from the pulse wave signal detected before breathing is stopped, during breathing is stopped, and after breathing is resumed, and the determination criterion is determined based on the calculated pulse interval. Judgment device. In the respiratory determination device according to any one of claims 1 to 6,
The predetermined time is a plurality of periods;
The respiration determination device, wherein the analysis unit generates the determination criterion based on at least one of the plurality of periods. The respiratory determination apparatus according to any one of claims 1 to 7,
Informing means for informing the breathing information,
The said notification means alert | reports the said determination criteria, The respiration determination apparatus characterized by the above-mentioned. In the respiratory determination device according to any one of claims 2 to 8,
The analysis means calculates a variation pattern of the pulse interval over time from the pulse wave signal detected during sleep, and determines that the respiratory stop state is satisfied when the determination criteria match in the variation pattern. Respiratory judgment device characterized by the above. In the respiratory determination device according to any one of claims 1 to 9,
The breathing determination apparatus, wherein the breathing information indicates at least one of the number of appearances of the breathing stop state, the duration of the breathing stop state, and the number of appearances of the breathing stop state per unit time. In the respiratory determination device according to any one of claims 1 to 10,
Body movement detecting means for detecting body movement,
When the body motion detection unit detects the body motion exceeding a predetermined range when the breathing is stopped, or the pulse rate indicated by the pulse wave signal exceeds the predetermined range. A respiration determination device that restarts the operation after the respiration stops. A pulse wave detection step for detecting a pulse wave signal;
A criterion generation step for generating a criterion for determining breathing stop by analyzing the pulse wave signal detected when the breathing is stopped for a predetermined time during awakening and the breathing is resumed;
A respiration determination method, comprising: a respiration information generation step of generating respiration information based on the determination criterion and the pulse wave signal detected during sleep. A pulse wave detection function for detecting a pulse wave signal;
An analysis function for analyzing a respiratory state during sleep based on the pulse wave signal detected by the pulse wave detection unit and generating respiratory information indicating a respiratory state during sleep based on the analysis result is realized by a computer. ,
The analysis function sets a criterion for determining breathing stop based on the pulse wave signal detected when the breathing is stopped for a predetermined time during awakening and the breathing is resumed. A respiration determination program that generates the respiration information based on a reference and the pulse wave signal detected during sleep. Pulse wave detection means for detecting a pulse wave signal;
Analyzing the respiratory state during sleep based on the pulse wave signal detected by the pulse wave detecting unit, and generating respiratory information indicating the respiratory state during sleep based on the analysis result,
The analysis means sets a determination criterion for determining breathing stop based on the pulse wave signal detected when the breathing is stopped for a predetermined time during awakening and the breathing is resumed. A respiration determination system characterized by generating the respiration information based on a reference and the pulse wave signal detected during sleep.

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