JP2020000371A - Sleep state determination device, sleep state determination method, and sleep state determination system - Google Patents

Abstract

To provide a sleep state determination device capable of grasping a state relating to sleep of an individual user.SOLUTION: A measurement result acquisition unit acquires the measured biological information of a user. A state determination unit determines whether the user is out of a bed or in the bed, on the basis of the acquired biological information. When determining that the user is in the bed, the state determination unit determines whether the user is awake or asleep. An output unit outputs a result of determination by the state determination unit.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a sleep state determination device, a sleep state determination method, and a sleep state determination system.

There is a sleep state measurement device that obtains biological information from a living body and obtains information that is an index of a sleep state (for example, see Patent Literature 1). By using such a sleep state measuring device, the heartbeat, respiration, and the like of a living body can be grasped. Further, the biological information can be used as information for estimating the quality of sleep such as REM sleep and non-REM sleep.
On the other hand, in a facility that accompanies the user such as a hotel, a medical facility, and a nursing care facility, the user is regularly watched at night to check whether the user is sleeping properly. If the technology described in Patent Literature 1 is used in such a facility, it is possible to ascertain the quality of the user's sleep and to determine whether or not the user is properly sleeping.

JP 2017-064338 A

  However, at night, the number of staff members at hotels and facilities is reduced, so that when watching over a plurality of users, the time interval between rounds may be long. If the interval between the rounds becomes longer, there is a problem that if the user wakes up between rounds, it becomes difficult to immediately respond to the awakened user.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a sleep state determination device, a sleep state determination method, and a sleep state determination system that can grasp the state of each user regarding sleep. Is to do.

  In order to solve the above-described problem, the present invention provides a measurement result acquisition unit that acquires measured biological information of a user, and based on the acquired biological information, determines whether the user has left or entered the bed. And a state determination unit that determines whether the user is awake or asleep when the user is determined to be in bed, and an output unit that outputs a determination result determined to the state determination unit. It is a sleep state determination device having.

Further, according to the present invention, the measurement result acquisition unit acquires the measured biological information of the user, and the state determination unit determines whether the user has left the bed based on the acquired biological information. It is determined whether the user is on the floor, and when it is determined that the user has entered the bed, a state determination step of determining whether the user is awake or falling asleep, and an output unit is determined by the state determination unit. A sleep state determination method including an output step of outputting the determined determination result.
Also, the present invention provides a sleep state determination device described above, and an administrator terminal that receives a plurality of user determination results from the sleep state determination device and displays the received plurality of user determination results in a list. Is a sleep state determination system.

  As described above, according to the present invention, it is determined whether the user enters or leaves the bed, and when it is determined that the user is entering the bed, it is determined whether the user has fallen asleep or awake. It is possible to ascertain the sleep-related state of the person.

1 is a configuration diagram illustrating a configuration of a sleep state determination system 1 according to an embodiment. It is a figure showing the example of a display of the sleep state of an embodiment. It is a figure showing the example of a display of the sleep state of an embodiment. It is a figure showing the example of a display of the sleep state of an embodiment. FIG. 7 is a diagram illustrating an example of a management screen of the administrator terminal 60 according to the embodiment. FIG. 7 is a diagram illustrating an example of a management screen of the administrator terminal 60 according to the embodiment. 4 is a flowchart illustrating an operation example of the sleep state determination device 10 of the embodiment. 4 is a flowchart illustrating an operation example of the sleep state determination device 10 of the embodiment. It is a block diagram which shows the structure of 1 A of sleep state determination systems in the modification of embodiment.

  Hereinafter, a sleep state determination system and a sleep state determination device according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a configuration diagram illustrating a configuration of a sleep state determination system 1 according to the embodiment.
As shown in FIG. 1, the sleep state determination system 1 includes, for example, a sleep state determination device 10, a sensor sheet 20, a communication control device 30, a terminal device 40, a printing device 50, an administrator terminal 60, and a communication network 70. Each of the sleep state determination device 10, the sensor sheet 20, the communication control device 30, the terminal device 40, the printing device 50, and the administrator terminal 60 is communicably connected via a communication network 70.

  The sleep state determination device 10 acquires the biological information of the user from the communication control device 30. Here, the biological information includes, for example, information indicating the heart rate and respiratory rate of the user in the bed, the presence or absence of body motion, and the depth of sleep of the user. The sleep depth here is derived, for example, by calculating the phase coherence λ based on the phase difference between the instantaneous phase of the heartbeat interval and the instantaneous phase of the breathing pattern using the technology described in Patent Document 1. May be. However, the depth of the user's sleep may be information derived based on information that can be an index for determining the depth of the sleep. For example, the user's autonomic nervous balance, stress level, or relaxation level may be determined. It may be derived based on the indicated information.

The sleep state determination device 10 determines a sleep state based on the acquired biological information of the user. The sleep state is a sleep state, and is information indicating, for example, whether the user is in or out of bed, or if a user is in bed, awake or in a sleep state. Here, the sleep state includes a state after falling asleep (whether sleeping is continuing or awakening), presence or absence of turning over during sleep after falling asleep, and a response to a bedsore (hereinafter referred to as a bedsore response). ) Is included.
The sleep state determination device 10 transmits the received biological information of the user and the information indicating the determination result of the sleep state to a predetermined transmission destination. The transmission destination here is, for example, the terminal device 40 or the administrator terminal 60.

  The sensor sheet 20 is a sheet-type sensor, for example, a piezoelectric sensor that detects a pressure acting in a film thickness direction. The sensor sheet 20 is provided between a mattress and a mattress when a plurality of mattresses are provided, for example, under a mattress of a bed where a user goes to bed or when the mattress has a two-layer structure. The movement of the user when there is a user is detected. The sensor sheet 20 outputs the detection result to the communication control device 30.

  The communication control device 30 acquires an electric signal detected by the sensor sheet 20. The communication control device 30 calculates the biological information of the user by analyzing the obtained electric signal. The communication control device 30 extracts, for example, a signal in a predetermined frequency band corresponding to a heartbeat, respiration, and body motion by performing a filtering process on the obtained electric signal, and based on the extracted signal, a heartbeat per unit time. Calculate the number, respiratory rate and presence or absence of body movement. In addition, the communication control device 30 calculates the user's sleep depth (for example, phase coherence λ) based on the calculated user's heart rate and the like. The communication control device 30 transmits the calculated biological information of the user to the sleep state determination device 10.

The terminal device 40 is, for example, a tablet terminal provided in a room where the user goes to bed, or a notebook or desktop personal computer. Alternatively, the terminal device 40 may be a smartphone, a tablet terminal, or the like owned by the user. For example, when the sleep state determination system 1 is applied to a nursing facility, a hospital, or the like, the terminal device 40 may be a smartphone owned by a family member of a user, a caregiver who is in charge of the user, a medical worker, or the like. Good.
In addition, an application program that displays the biological information of the user and the determination result of the sleep state based on the information transmitted from the sleep state determination device 10 is installed in the terminal device 40. The terminal device 40 activates the application program and receives the biological information and the information indicating the result of the sleep state determination from the sleep state determination device 10. The terminal device 40 displays the received biological information and the information indicating the determination result of the sleep state on the display screen by the operation of the application program. Alternatively, the terminal device 40 can access an individual URL (Uniform Resource Locator) that displays biological information and a sleep state from a WEB (World Wide Web) browser, and can also view the biological information and sleep information on the WEB application. . Accordingly, when the sleep state determination system 1 is applied to a nursing home, a hospital, or the like, a medical worker or the like having the terminal device 40 can grasp the sleep state of the user.
Note that the terminal device 40 may receive only one of the biological information or the information indicating the determination result of the sleep state. In this case, for example, when the sleep state determination device 10 determines that the sleeping user has awakened, the terminal device 40 receives the notification by e-mail or the like. Accordingly, a medical worker or the like holding the terminal device 40 can grasp that the user who was sleeping has awakened.

The administrator terminal 60 is a terminal device of an administrator who manages the sleep state determination device 10. The administrator terminal 60 receives the biological information of the user and information indicating the determination result of the sleep state from the sleep state determination device 10. The administrator terminal 60 receives the received user's biological information and information indicating the determination result of the sleep state, as described later, a “real-time sleep state list screen of all users”, a “real-time sleep state detailed screen of each user”, and a “vital report”. (See FIGS. 2 to 4) on the display screen or output to the printing device 50 for printing.
For example, when the sleep state determination system 1 is applied to a nursing facility, a hospital, or the like, the administrator terminal 60 is a terminal device provided in a place where a care worker or a medical worker resides, for example, a nurse station. In this case, based on the received biological information and the information indicating the result of the determination of the sleep state, the administrator terminal 60 determines the sleep state of the user, that is, whether the user is in or out of bed, awake, or asleep. It can be grasped whether it is inside. Thereby, it is possible to grasp whether the user has entered the bed after turning off the light, or whether he / she is awake at midnight, and the like.

The administrator terminal 60 sets an alarm notification condition, which is a condition for notifying an alarm. Here, the alarm is an alarm that notifies an administrator or the like who browses the terminal device 40 or the administrator terminal 60 when the sleep state of the user satisfies a specific condition. By setting the alarm notification condition, for example, when there is a user who wakes up in the middle of the night, the administrator terminal 60 can receive a notification to that effect, and can check whether the physical condition of the user has changed. It is possible to take early measures such as going to see.
For example, the administrator terminal 60 displays a management screen (see FIG. 5) on which setting items for setting alarm notification conditions are displayed, and performs input operations by an administrator or the like from an input device (not shown) such as a keyboard or a mouse. , The setting value input for the setting item is acquired, and the acquired value is stored in the alarm condition storage unit 107 of the sleep state determination device 10 described later.

In addition, the administrator terminal 60 sets various parameters (hereinafter, also referred to as determination variables) used for determining the sleep state. Here, the determination variable is, for example, a variable used when determining entering a bed, awakening, and the like. The administrator terminal 60 can change the conditions for judging entry or arousal according to the environment of the facility, the state of the bedding, the average age of the user in the facility, and the like, by individually setting the judgment variables. It is possible to more accurately determine whether to enter the bed or awake.
For example, the administrator terminal 60 displays a management screen (see FIG. 6) on which setting items for setting various parameters are displayed, and changes the setting items by an input operation of the administrator or the like from an input device such as a keyboard or a mouse. The set value input thereto is acquired, and the acquired value is stored in the determination threshold storage unit 103 of the sleep state determination device 10 described later.

The printing device 50 prints the “real-time sleep state list screen of all users”, the “real-time detailed sleep state screen of each user”, and the “vital report” output from the administrator terminal 60.
The communication network 70 is, for example, a communication network including a part or all of the Internet, a WAN (Wide Area Network), a LAN (Local Area Network), a provider device, a wireless base station, a dedicated line, and the like.

  As shown in FIG. 1, the sleep state determination device 10 includes, for example, a measurement result acquisition unit 101, a state determination unit 102, a determination threshold storage unit 103, an alarm notification unit 104, an output unit 105, a biological information storage unit 106, An alarm condition storage unit 107 is provided.

  The measurement result acquisition unit 101 periodically (for example, every 5 seconds) acquires the measured biological information of the user. The measurement result acquisition unit 101 acquires the user's biological information measured by the communication control device 30 from the communication control device 30 based on the electric signal detected by the sensor sheet 20. The measurement result acquisition unit 101 stores the acquired biological information of the user in the biological information storage unit 106.

The state determination unit 102 determines a sleep state based on the biological information.
The state determination unit 102 determines whether the user has entered or left the bed, for example, based on information indicating the heart rate included in the biological information. Specifically, when the acquired heart rate of the user is equal to or greater than the predetermined threshold Th and is continuously detected for the predetermined period T1, the state determination unit 102 enters the bed. Is determined. Here, the entry variable (for example, the threshold Th, the period T1, etc.) used for the entry determination is an example of the determination variable. In particular, the period T1 is an example of a “first determination variable”.
The entry variable is stored in the determination threshold storage unit 103, for example. In this case, the state determination unit 102 determines whether the user has entered the bed using the bed entry variable acquired with reference to the determination threshold storage unit 103.
On the other hand, when it is not determined that the user has entered the bed, the state determination unit 102 determines that the user has left the bed. The state determination unit 102 outputs information indicating whether the user has entered the bed to the alarm notification unit 104 and the output unit 105.

When determining that the user has entered the bed, the state determination unit 102 determines whether the user is awake or falling asleep based on the information indicating the body movement included in the biological information. Specifically, the state determination unit 102 detects that the user's body motion acquired after the biological information determined to be in bed has continued for a predetermined period T2. In this case, it is determined that the user is awake. Here, the awakening variable after entering the bed (for example, the period T2) used for the determination of the awakening after entering the bed is an example of the determination variable. In particular, the period T2 is an example of a “second determination variable”.
The awakening variable after entering the bed is stored in the determination threshold storage unit 103, for example. In this case, the state determination unit 102 determines whether or not the user who has entered the bed is awake using the awakening variable after the bed acquired with reference to the determination threshold storage unit 103.
On the other hand, when it is determined that the user is in bed, the state determination unit 102 determines that the user has fallen asleep when it is not determined that the user is awake.
The state determination unit 102 outputs information indicating whether the user is awake or falling asleep to the alarm notification unit 104 and the output unit 105.

When the state determination unit 102 determines that the user has fallen asleep, the state determination unit 102 determines whether the user has continued sleep (sleeping) or awakened based on information indicating body movement included in the biological information. I do. Specifically, the state determination unit 102 determines that the user's body motion continuously acquired for the predetermined period T3 after the biological information determined to have fallen asleep continues for the predetermined period T4. When it is detected that there is movement, it is determined that the sleeping user has awakened. Here, the awakening variable after falling asleep (for example, the period T3, T4, etc.) used for determining the awakening after falling asleep is an example of the determination variable. In particular, the period T3 is an example of a “third determination variable”, and the period T4 is an example of a “fourth determination variable”.
The awakening variable after falling asleep is stored in the determination threshold storage unit 103, for example. In this case, the state determination unit 102 determines whether or not the user has awakened after falling asleep using the awakening variable after falling asleep obtained with reference to the determination threshold storage unit 103.
On the other hand, after determining that the user has fallen asleep, if the user does not determine that the user has awakened, the state determination unit 102 determines that the user is continuing to sleep (sleeping).
The state determination unit 102 outputs information indicating whether the user who has fallen asleep has awakened or is asleep to the alarm notification unit 104 and the output unit 105.

When determining that the user has fallen asleep, the state determination unit 102 determines whether or not the user has turned over based on information indicating body movement included in the biological information. Specifically, the state determination unit 102 determines that the user's body movement acquired after the biological information determined to have fallen asleep has continued for a predetermined period T5, Is determined to have turned over. Here, a turning variable (for example, the period T5, etc.) used for the judgment of turning is an example of the judgment variable. In particular, the period T5 is an example of a “fifth determination variable”.
The turning variable may be set arbitrarily. For example, the period T5 is set to a period shorter than the period T4 used for determining the awakening after falling asleep.
The turnover variable is stored in the determination threshold storage unit 103, for example. In this case, the state determination unit 102 determines whether or not the user has turned over using the turnover variable acquired with reference to the determination threshold storage unit 103.
The state determination unit 102 outputs information indicating whether the user has turned over to the alarm notification unit 104 and the output unit 105.

If the state determination unit 102 determines that the user has not turned over, the state determination unit 102 may determine whether or not bed support is necessary based on information indicating body movement included in the biological information. Specifically, the state determination unit 102 determines that the user has not fallen over the bed for a predetermined period T6 based on the user's body motion acquired after the biological information determined to have fallen asleep. It is determined that a response is necessary. Here, the bedsore variable (for example, the period T6) used to determine the necessity of the bedsore is an example of the determination variable. In particular, the period T6 is an example of the “sixth determination variable”.
The bedsore variable is stored in the determination threshold storage unit 103, for example. In this case, the state determination unit 102 determines whether or not the user needs to respond to a bedsore using the bedsore variable acquired with reference to the determination threshold storage unit 103.
The state determination unit 102 outputs information indicating whether the user needs to deal with a bedsore to the alarm notification unit 104 and the output unit 105.

  The determination threshold storage unit 103 stores, for example, determination variables (for example, the above-described threshold Th and the periods T1 to T5) used when determining a sleep state. The control unit (not shown) of the sleep state determination device 10 causes the determination threshold storage unit 103 to store, for example, a preset determination variable. The control unit of the sleep state determination device 10 is configured to change the setting value of the changed determination variable when the setting value is changed for the setting item of the determination variable displayed on the management screen of the administrator terminal 60. Is stored in the determination threshold storage unit 103.

  The alarm notification unit 104 notifies an alarm when the sleep state determined by the sleep state determination device 10 satisfies a predetermined alarm notification condition. The alarm notification unit 104 notifies an alarm to a preset e-mail address via a management screen of the administrator terminal 60, for example. Accordingly, when an e-mail address that can be received by the terminal device 40 or the administrator terminal 60 is set, an alarm can be notified to an administrator or the like who browses the terminal device 40 or the administrator terminal 60.

  The output unit 105 outputs the biological information acquired by the measurement result acquisition unit 101 and the information indicating the sleep state determined by the state determination unit 102. The output unit 105 transmits, for example, biological information and information indicating a sleep state to the terminal device 40 and the administrator terminal 60.

  The biometric information storage unit 106 stores the biometric information of the user acquired by the measurement result acquisition unit 101. The measurement result acquisition unit 101 stores, for example, the biological information of the user in association with identification information for identifying the user.

  The alarm condition storage unit 107 stores an alarm notification condition. The control unit of the sleep state determination device 10 causes the alarm condition storage unit 107 to store, for example, a preset alarm notification condition. In addition, when the set value of the alarm notification condition displayed on the management screen of the administrator terminal 60 is changed, the control unit of the sleep state determination device 10 changes the alarm notification condition after the change in the changed alarm notification condition. The set value is stored in the alarm condition storage unit 107.

Here, the display of the sleep state will be described with reference to FIGS. 2 to 4 are diagrams illustrating display examples of the sleep state according to the embodiment. FIG. 2 illustrates an example of a “real-time sleep state list screen of all users”, FIG. 3 illustrates an example of a “real-time sleep state detailed screen of each user”, and FIG. 4 illustrates an example of a “vital report”.
As shown in FIG. 2, the sleep state is indicated by, for example, a state of a “real-time sleep state list screen of all users” listing sleep states of a plurality of users. The image 600 is, for example, an image displayed on the display screen of the administrator terminal 60 that has received the sleep state from the sleep state determination device 10. This example shows an example in which sleep states of a plurality of users using a nursing facility are displayed in a list. The image 600 is composed of regions 601 to 603.

In the area 601, bibliographic items such as the name of the facility where the sleep state determination system 1 is introduced and the current date and time are posted.
The area 602 is titled “List display” and includes, for each installation location where the sleep state determination device 10 is installed, the user's name (user), entering / leaving floor, heart rate, respiratory rate, sleep state, and installation period. Are posted respectively. In this example, as shown in the legend at the bottom of the area 602, the entering and leaving the bed is indicated by the display of the icon corresponding to each of the leaving and entering the bed, and the sleep depth of the user is awake, sleep 1 to sleep 1 4 are displayed by displaying icons corresponding to the respective states.
In the area 602, a column 602A labeled "Detailed display", a column 602B labeled "Report display", a column 602C labeled "Data output", and a column 602D in which a date can be set are respectively provided. Will be posted. On the display screen of the administrator terminal 60, a “real-time sleep state list screen of all users” showing a list of current states of all the users is displayed. When an individual user is selected and the “detailed display” column 602A is selected by a mouse click operation or the like, the administrator terminal 60 displays “each user's date” on the display screen on the date set in the column 602D. Sleep state real-time detail screen "is displayed. In addition, when the column 602A is clicked in a state where the date is not set in the column 602D, the “real-time sleep state detailed screen of each user” on the current date is displayed.
Further, when the column 602B of “report display” is selected after the individual user is selected, the administrator terminal 60 displays the “vital report” on the display screen on the date set in the column 602D. The “vital report” shows average vital data (heart rate, respiratory rate, sleep time, deep sleep degree, etc.) of the individual user on the past date.
When the “data output” column 602C is selected, the administrator terminal 60 outputs the information displayed on the display screen to the printing device 50.

  In an area 603, an installation location, a user name (user), an event, and an occurrence time are posted for each alarm notification with a title of “alarm history”. The event here indicates a sleep state that triggers an alarm notification. In this example, the events that have triggered the alarm notification include “awakening”, “entering the bed”, “leaving from the bed”, and “disconnection”. As in this example, the sleep state determination device 10 may use the communication state between the sleep state determination device 10 and the communication control device 30 as a trigger of the alarm notification. In this case, for example, the communication control device 30 periodically transmits a health check signal indicating that the device is operating normally to the sleep state determination device 10. Then, when the period during which the health check signal is not received from the communication control device 30 is equal to or longer than a predetermined period, the sleep state determination device 10 notifies the administrator terminal 60 of an alarm.

  As shown in FIG. 3, the sleep state is indicated by a “real-time sleep state detailed screen of each user” showing the sleep state of one user (the user A in this example) in detail using a graph or the like. May be used. The image 610 is an image displayed when, for example, the “detailed display” column 602A displayed in the area 602 in FIG. 2 is selected. The image 610 includes regions 611 to 613.

In the area 611, bibliographic items such as the name of the facility, the name of the user (user), and the current date and time are posted.
In the area 612, a column for setting a sleep state on a date desired to be browsed is posted with a title of “display date”. A radio button for selecting "Sleep", "Heartbeat", "Breathing", "Body movement", and "Walking-in / out" in the column for selecting the desired content to be viewed under the title "Displayed content" You. This example shows an example in which “sleep” is selected as the display content.
Also, in the area 612, as a display of the sleep state to be compared with the display date with a title of “comparison display”, “(no display)”, “the previous day (display)”, and “two days before (display)” "Radio button to select. This example shows an example in which “(No display)” is set as the comparative display.
In the lower part of the area 612, a graph showing a time-series change of the sleep state (in this example, the sleep depth on a predetermined date) corresponding to the set “display date” and “display content” is displayed. Will be posted. In this example, the horizontal axis indicates time, and the vertical axis indicates sleep depth by sleep depth (sleep level). In this example, since the display of “comparison display” is set to “none”, the graph indicating the sleep depth of the previous day or the day before the previous day is not displayed as a comparison target.
In this example, the sleep depth is described in each of the stages of “awake”, “shallow”, “slightly shallow”, “slightly deep”, and “deep”. The sleep depth and the sleep depth of the icon display displayed in the area 602 of FIG. 2 may be determined based on the same index, or may be determined based on different indexes. There may be.

  In the area 613, the latest sleep state among the information indicating the sleep state received from the sleep state determination device 10 by the administrator terminal 60 under the title "display latest state" is described. In this example, an example is shown in which “sleep / wake”, “sleep / wake”, “heart rate”, and “respiration rate” are listed as sleep states. Further, in this example, as in the area 602 in FIG. 2, the depth of leaving / entering the bed and the depth of sleep are indicated by displaying icons.

  As shown in FIG. 4, the sleep state may be indicated by a “vital report” state that indicates a total result of one day's sleep state for one user (in this example, user A). The image 615 is an image displayed when, for example, a “report display” column 602B displayed in the area 602 in FIG. 2 is selected. The image 615 is composed of regions 616 to 619.

In the area 616, the name of the facility (in this example, “XX Corporation”) and bibliographic items such as the current date and time are posted.
In the area 617, a column for selecting a user with the title "user" is posted. A column for setting a sleep state on a date desired to be browsed is posted with a title of “display date”. Under the title "State of display day", the sleep time, heart rate average, respiratory average, number of body movements during sleep, total leaving time, total entering time, and deep sleep degree of the selected user on the set day are set. Each will be posted.
In the area 618, a graph showing a time-series change of the entering / leaving floor on the day set in the “display date” column of the area 617 is displayed. In this example, the horizontal axis indicates time, and the vertical axis indicates leaving and entering the bed.
A graph showing a time-series change in the degree of sleep (in this example, awake, shallow, slightly shallow, slightly deep, deep) in the day set in the column of “display date” in the region 617 is displayed in the region 619. Is done. In this example, the horizontal axis indicates time, and the vertical axis indicates the degree of sleep.

  Here, the management screen of the administrator terminal 60 will be described with reference to FIGS. FIGS. 5 and 6 are diagrams illustrating an example of a management screen of the administrator terminal 60 according to the embodiment. FIG. 5 shows an example of a screen for setting an alarm notification condition, and FIG. 6 shows an example of a screen for setting a judgment variable.

As shown in FIG. 5, the alarm notification condition is set on the management screen of the administrator terminal 60, for example. An image 620 for setting an alarm notification condition includes areas 621 and 622.
In the area 621, bibliographic items such as the name of the facility and the current date and time are described.
In the area 622, a column (alarm notification setting) for setting an alarm notification condition is described with a title of “system setting”. The alarm notification setting includes items of a target event, a threshold, an event establishment time, an alarm setting time zone, and a mail notification. In addition, columns 622A to 622G in which each item is set as an alarm notification are posted.
In the target event, as a sleep state that triggers an alarm notification, an event name such as leaving the bed or awakening, a decrease in heart rate, or communication loss, and a check box for selecting the event are posted. In this example, the event names whose check boxes are checked are displayed in black, and the unchecked event names are displayed in gray.
The threshold value is a field for setting a threshold value that is considered as occurrence of an event when a sleep state accompanied by a numerical value such as a heart rate is selected as an event. In this case, when the sleep state becomes equal to or more than (or less than) the value set as the threshold, an alarm is notified.
The event establishment time is a column for setting the continuation time of the sleep state selected as the event. In this case, an alarm notification is issued when the sleep state continues for the time set as the event establishment time.
The alarm setting time zone is a column for setting a start time and an end time of a time zone for performing an alarm notification. In this case, when an event occurs during the alarm setting time zone, an alarm notification is performed.
In the mail notification, a check box for selecting whether or not to perform notification by electronic mail as an alarm notification is posted. Further, in this example, the address of the e-mail to be notified of the alarm is displayed in the column of “Common notification destination e-mail address”.

In the field 622A of the area 622, as the alarm notification setting, a condition that the state in which it is determined that the user has left the bed for 5 minutes in the alarm setting time period (21:00 to 6:00) is set. ing. In addition, a setting is made so that a mail notification is not performed when the alarm notification condition is satisfied.
In the column 622B of the area 622, as the alarm notification setting, a condition is set in a case where the state in which it is determined that the user has left the bed has been kept open for 30 minutes in the alarm setting time zone (21:00 to 6:00). ing. In addition, a setting is made so that a mail notification is performed when the condition of the alarm notification is satisfied.
In the field 622C of the area 622, as the alarm notification setting, a condition is set that the state where the user is determined to be awake is continued for 10 minutes in the alarm setting time period (21:00 to 4:00). ing. In addition, a setting is made so that a mail notification is not performed when the alarm notification condition is satisfied.
In the field 622D of the area 622, as the alarm notification setting, a condition is set that the state where it is determined that the heart rate of the user has decreased to 20 or less for 3 minutes in the alarm setting time zone (no setting) continues for 3 minutes. ing. In addition, a setting is made so that a mail notification is not performed when the alarm notification condition is satisfied.
In the field 622E of the area 622, as the alarm notification setting, the condition that the state in which the heartbeat of the user is determined to be reduced to 0 (zero) in the alarm setting time zone (no setting) continues for one minute is set. Is set. In addition, a setting is made so that a mail notification is performed when the condition of the alarm notification is satisfied.
In the column 622F of the area 622, as the alarm notification setting, the condition that the state in which it is determined that the user's breathing has decreased to 0 (zero) in the alarm setting time zone (no setting) continues for 3 minutes is set. It is set so that alarm notification and mail notification are not performed when this condition is satisfied.
In the column 622G of the area 622, the condition that the sleep state determination device 10 cannot receive the user information from the communication control device 30 for 30 minutes in the alarm setting time zone (no setting) is set as the alarm notification setting. Is set. In addition, a setting is made so that a mail notification is performed when the condition of the alarm notification is satisfied.

As shown in FIG. 6, the determination variable is set on the management screen of the administrator terminal 60, for example. An image 630 for setting a judgment variable is composed of regions 631 and 632.
In the area 631, bibliographic items such as the name of the facility and the current date and time are posted.
In the area 632, a column (sleep analysis parameter) for setting a determination variable is described with a title of “system setting”. The sleep analysis parameters include items such as an entry determination, an exit determination, a sleep determination, an awake determination, a turnover determination, and a bedsore correspondence determination.

  Each item has columns 632A to 632G in which the number of times is set. The number of times set in the columns 632A to 632G indicates the number of times of acquiring biological information such as heartbeats and body movements acquired periodically. For example, when the biometric information is acquired every 5 seconds, the biometric information acquired continuously 6 times includes (5 × 6 =) 30 seconds of biometric information. That is, the number of times of acquiring the biological information corresponds to the period of acquiring the biological information. That is, the number of times of acquiring the biological information is an example of the determination variable.

In the entry determination, a column 632A for setting the number of times of continuous heartbeat detection is described. In this case, when the heartbeat is detected continuously for the number of times set in the column 632A, it is determined that the person enters the bed.
A column 632B for setting the number of times a heartbeat is not continuously detected is described in the leaving-bed determination. In this case, when the heartbeat is not continuously detected the number of times set in the column 632B, it is determined that the user has left the bed. In the present embodiment, any one of the above-described entry determination and exit determination may be used. In this case, if the entry determination is used, it is determined that the user has left the bed if the entry is not determined. On the other hand, when the leaving-bed determination is used, it is determined that the user has entered the bed if it is not determined that the user has left the bed.

In the sleep onset determination, a column 632C for setting the number of times to continuously detect the heartbeat and a column 632D for setting the number of times to continuously detect the body motion are described. In this case, it is determined that the user has fallen asleep when the heartbeat is continuously detected the number of times set in the column 632C and the body motion is continuously detected the number of times set in the column 632D.
In the awakening determination, a column 632E for setting the number of times of continuous detection of body movement, and a column 632F for setting the number of times of detecting the presence of body movement among the number of times of detection of body movement set in the column 632E are posted. You. In this case, after falling asleep, if it is detected that the number of body movements set in the column 632F has occurred among the body movements continuously obtained in the number set in the column 632E, it is determined that the person has awakened after falling asleep.

In the rollover determination, a column 632G for setting the number of times of continuous detection of body motion is posted. In this case, after falling asleep, if the presence of body motion is detected continuously for the number of times set in the column 632G, it is determined that the user has turned over.
The column 632H for setting a time for continuously detecting a body motion is included in the bedsore correspondence determination. In this case, after falling asleep, if no body motion is continuously detected for the time set in the column 632H, it is determined that the bedsore correspondence is necessary.

  Here, the operation of the sleep state determination device 10 will be described with reference to FIGS. 7 and 8. 7 and 8 are flowcharts illustrating an operation example of the sleep state determination device 10 of the embodiment. FIG. 7 shows a flow of overall processing performed by the sleep state determination device 10, and FIG. 8 shows a flow of processing performed by the sleep state determination device 10 to determine a sleep state.

As shown in FIG. 7, first, the sleep state determination device 10 acquires a predetermined number of records of continuous biometric information (step S100). The number of records indicates the number of times of acquiring biometric information periodically. The number of records here reflects the value (for example, the number of records = 6) set in the column 632A as the entry determination on the determination variable setting screen shown in FIG.
The sleep state determination device 10 determines whether or not all the heart rates of the acquired biological information are equal to or greater than a predetermined threshold Th (step S101).
When all of the heart rates are equal to or greater than the threshold Th, the sleep state determination device 10 determines that the person is in bed (step S102), and performs a process of determining a sleep state (state determination process) (step S103).
On the other hand, when the heart rate of the acquired biological information is less than the predetermined threshold Th, the sleep state determination device 10 determines that the user has left the bed (step S104), and returns to the process illustrated in step S100.

As shown in FIG. 8, in the state determination process, first, the sleep state determination device 10 acquires a predetermined number of records of continuous biometric information (step S200). Here, the value (for example, the number of records = 36) set in the column 632D as sleep determination on the determination variable setting screen shown in FIG. 7 is reflected in the number of records.
The sleep state determination device 10 determines whether or not all the body movements of the acquired biological information are “with body movement” (step S201).
When all the body movements are “with body movement”, the sleep state determination device 10 determines that the person is awake (step S206). In this case, the sleep state determination device 10 issues an alarm notification according to the alarm notification condition shown in FIG. Then, the sleep state determination device 10 returns to the process illustrated in step S100.
On the other hand, when all the body movements are not “with body movement”, the sleep state determination device 10 determines that the user has fallen asleep (step S203). In this case, the sleep state determination device 10 issues an alarm notification according to the alarm notification condition shown in FIG.

Next, the sleep state determination device 10 acquires continuous biological information of a predetermined number of records (step S204). The number of records here reflects the value (for example, the number of records = 12) set in the column 632E as the arousal determination on the determination variable setting screen shown in FIG.
The sleep state determination device 10 determines whether or not continuous body movements equal to or more than a predetermined number of records among the acquired body movements are “with body movement” (step S205). The number of records here reflects the value (for example, the number of records = 6) set in the column 632F as the arousal determination on the determination variable setting screen shown in FIG.
The sleep state determination device 10 determines that the user has awakened when continuous body movements equal to or more than a predetermined number of records among the acquired body movements are “with body movement” (step S206). In this case, the sleep state determination device 10 issues an alarm notification according to the alarm notification condition shown in FIG. Then, the sleep state determination device 10 returns to the process illustrated in step S100.

In addition, the sleep state determination device 10 acquires a predetermined number of records of continuous biological information (step S207). The value set in the column 632G as the rollover determination on the determination variable setting screen shown in FIG. 7 (for example, the number of records = 4) is reflected in the number of records here.
The sleep state determination device 10 determines whether or not all the body movements of the acquired biological information are “with body movement” (step S208).
When all the body movements are “with body movement”, the sleep state determination device 10 determines that the child has turned over (step S209). In this case, the sleep state determination device 10 issues an alarm notification according to the alarm notification condition shown in FIG. Then, the sleep state determination device 10 returns to the process illustrated in step S203.
On the other hand, when all the body movements are not “with body movement”, the sleep state determination device 10 determines whether or not no body movement has continued for a predetermined period or more after falling asleep (step S210). . The value (for example, 3 [hours]) set in the column 632H as the floor-slip correspondence determination on the determination variable setting screen shown in FIG. 7 is reflected on the predetermined time here.
The sleep state determination device 10 determines that countermeasures against bedsores are necessary when no body motion continues for a predetermined period or more after falling asleep (step S211). In this case, the sleep state determination device 10 issues an alarm notification according to the alarm notification condition shown in FIG. Then, the sleep state determination device 10 returns to the process illustrated in step S203.

  As described above, the sleep state determination device 10 of the embodiment determines whether the user is in or out of bed based on the biological information, and wakes up when determining that the user is in bed. Since it is determined whether the user has fallen asleep or not, it is possible to grasp the state regarding sleep based on the biological information without having special knowledge. In particular, in nursing homes and the like, many bedridden users are not necessarily asleep even if they enter the bed. For this reason, by determining whether or not the user falls asleep after entering the bed, it is possible to accurately grasp the sleep time of the user and use it for health management. In addition, it is necessary to understand the presence of a user who is awake but awake, and to provide care for the caregiver since the caregiver can look at the user or give a voice. Can be.

For example, in rounds of hotels and facilities, there are many shifts, and it is sometimes difficult for persons in charge to take over information of a plurality of users to their detailed contents.
On the other hand, if the present invention is utilized, information on a plurality of users, for example, information on the past heart rate, respiratory rate, number of times of turning over, sleep state, etc. of each user can be viewed, so that the handover is easier and more reliable. It is possible to carry out. Further, when the user changes during the tour, it is possible to find the cause of the change based on the past information of the user. Further, it is also possible to use the past information of the user as a material for notifying the user's family to the user's family in a remote place or the like remote from the facility.

  In addition, since the sleep state determination device 10 of the embodiment can output the result of determining the sleep state, the sleep state of a plurality of users is displayed in a list, so that the administrator can collectively determine the sleep state. I can figure it out. In addition, since the history of the sleep state of each user can be output, the history of the sleep state can be viewed by the user and the family of the user, and the care worker and the family can check the user's sleep state. It is possible to share information.

In addition, when the sleep state determination device 10 of the embodiment determines that the user has fallen asleep, the sleep state determination device 10 determines whether the user has awakened, turned over, and determines whether or not bed support is required. Can be grasped. For this reason, when the user who falls asleep wakes up, the care worker can go to see the state of the user before the problem behavior such as wandering occurs, and the problem behavior can be suppressed beforehand.
In addition, the sleep state determination device 10 of the embodiment can issue an alarm notification to a predetermined notification destination when an awakening or an event occurs, so that the care worker side has a small number of workers, particularly at night. Even in this case, it is possible to give priority to watching the awake user in response to the alarm notification, so that it is possible to more reliably perform necessary care.
In addition, the sleep state determination system 1 according to the embodiment includes the sleep state determination device 10 and an administrator terminal 60 that displays a list of sleep state determination results of a plurality of users determined by the sleep state determination device 10. By doing so, it is possible to collectively grasp the sleep states of a plurality of users, and to easily recognize which user has awakened or fell asleep, so that it is possible to perform a round trip efficiently and at an appropriate timing. It becomes possible.

Further, the sleep state determination system 1 described above may be linked with a nurse call system provided in a facility such as a nursing care facility or a hospital. The nurse call system is a system in which a user who is hospitalized or moved into a facility and a nurse or a care worker communicate with each other. This nurse call system may have a function of transferring a call from a user to a portable terminal (PHS or the like) carried by a nurse or the like. By associating the sleep state determination system 1 with such a nurse call system, it becomes possible to notify the nurse in charge of the sleep state of the user and the alarm notification using the existing system.
Therefore, an example in which the sleep state determination system 1 described above is linked to a nurse call system will be described as a modification of the embodiment. In the following description, only the configuration different from the embodiment will be described, and the same components will be denoted by the same reference numerals and description thereof will be omitted.

  FIG. 9 is a configuration diagram illustrating a configuration of a sleep state determination system 1A according to a modification of the embodiment. As shown in FIG. 9, the sleep state determination system 1A includes, for example, a sleep state determination device 10A, an interface server 80, and a nurse call system 90. Each of the terminal device 40, the printing device 50, the administrator terminal 60, the interface server 80, and the nurse call system 90 is communicably connected via an in-facility LAN (Local Area Network).

  In the example of this figure, the case where the interface server 80 is connected to the in-house LAN and is provided inside the facility is illustrated, but the interface server 80 may be provided outside the facility. In this case, the interface server 80 connects to the communication network 70 and communicates with the nurse call system 90 via the communication network 70 and the in-house LAN.

The sleep state determination device 10A outputs the received biological information of the user and the information indicating the determination result of the sleep state to the interface server 80. The sleep state determination device 10A includes a state determination unit 102A, an alarm notification unit 104A, and an output unit 105A.
The state determination unit 102A determines a sleep state based on the biological information, and outputs the determined result to the alarm notification unit 104A and the output unit 105A together with the installation location information of the sensor sheet 20. Here, the installation location information of the sensor sheet 20 is information indicating an installation location of the sensor sheet 20, and may be, for example, information indicating a room number and a bed number, or a name of a user in the room. May be included. The state determination unit 102A stores, for example, information in which the identification number of the sensor sheet 20 is associated with the installation location information in a storage unit (not shown), and refers to the storage unit to obtain the installation location information of the sensor sheet 20. To get. Here, the installation location information of the sensor sheet 20 is an example of “location information indicating a location where the user is located”.

When the sleep state determined by the state determination unit 102A satisfies a predetermined alarm notification condition, the alarm notification unit 104A notifies the interface server 80 of an alarm together with the installation location information of the sensor sheet 20.
The output unit 105A notifies the interface server 80 of the sleep state determined by the state determination unit 102A together with the installation location information of the sensor sheet 20.

  The interface server 80 obtains an alarm notification from the sleep state determination device 10A and a notification of the user's sleep state, and transmits the obtained notification to a nurse call master device in the nurse call system 90 or a portable terminal carried by a nurse or the like. (PHS etc.). Here, the interface server 80 determines which of the acquired notifications is to be notified to the nurse call system 90, and which of the notifications is to be transmitted to any of the nurse call master units or any of the nurses or other portable terminals (PHS). Etc.) may be selected. Here, the interface server 80 is an example of a “predetermined notification destination”.

  Specifically, the interface server 80 converts the electric signal indicating the notification content from the sleep state determination device 10A into an electric signal for nurse call communication according to the specification of the nurse call system 90, and converts the converted electric signal. , To a coordination adapter (not shown) of the nurse call system 90.

  The nurse call system 90 includes, for example, a cooperation adapter, a nurse call slave device, a nurse call master device, and a portable terminal such as a PHS. The coordination adapter functions as a control unit in various communications in the nurse call system 90 (for example, transmission to a PHS or the like, reception and transmission from a nurse call slave to a nurse call master, and the like). The nurse call slave unit is a communication terminal used by inpatients and residents of the facility. The nurse call base station is a communication base station provided at a place where a nurse or a care worker waits, such as a nurse station. A portable terminal such as a PHS is a portable terminal that a nurse or the like carries while working.

  As described above, the sleep state determination device 10A according to the modified example of the embodiment notifies the alarm notification regarding the sleep state to a predetermined notification destination (for example, the interface server 80) together with the installation location information of the sensor sheet 20. . Thereby, in the sleep state determination device 10A according to the modified example of the embodiment, an alarm notification is performed using the existing communication system (for example, the nurse call system 90), and a response to the user who needs to check the sleep state is performed. This can be performed more reliably.

  All or a part of the sleep state determination system 1 (1A) and the sleep state determination device 10 (10A) in the above-described embodiment may be realized by a computer. In that case, a program for realizing this function may be recorded on a computer-readable recording medium, and the program recorded on this recording medium may be read and executed by a computer system. Here, the “computer system” includes an OS and hardware such as peripheral devices. The “computer-readable recording medium” refers to a portable medium such as a flexible disk, a magneto-optical disk, a ROM, and a CD-ROM, and a storage device such as a hard disk built in a computer system. Further, a “computer-readable recording medium” refers to a communication line for transmitting a program via a network such as the Internet or a communication line such as a telephone line, which dynamically holds the program for a short time. Such a program may include a program that holds a program for a certain period of time, such as a volatile memory in a computer system serving as a server or a client in that case. The program may be for realizing a part of the functions described above, or may be a program that can realize the functions described above in combination with a program already recorded in a computer system, It may be realized using a programmable logic device such as an FPGA (Field Programmable Gate Array).

  As described above, the embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to the embodiments, and includes a design and the like within a range not departing from the gist of the present invention.

1, 1A ... sleep state determination system 10, 10A ... sleep state determination device 101 ... measurement result acquisition unit 102 ... state determination unit 103 ... determination threshold storage unit 104 ... alarm notification unit 105 ... output unit 106 ... biological information storage unit 107 ... Alarm condition storage unit 20 Sensor sheet 30 Communication control device 40 Terminal device 50 Printing device 60 Administrator terminal 70 Communication network 80 Interface server 90 Nurse call system

Claims (10)

A measurement result acquisition unit for acquiring the measured biological information of the user,
Based on the acquired biological information, it is determined whether the user has left or entered the bed, and if it is determined that the user has entered the bed, it is determined whether the user is awake or falling asleep A state determination unit to perform,
A sleep state determination device having an output unit that outputs a determination result determined by the state determination unit. The state determination unit is configured to determine, based on the biological information acquired in a period corresponding to a first determination variable that is a variable for determining a sleep state, all of the information indicating the heart rate included in the biological information, by a predetermined value. The sleep state determination device according to claim 1, wherein when a heart rate equal to or higher than a threshold is indicated, it is determined that the user is in bed. The state determination unit, after determining that the user has entered the bed, based on the biological information acquired during the period corresponding to the second determination variable, all of the information indicating the presence or absence of body movement included in the biological information And determining that the user has fallen asleep when it is determined that the user is awake, and determining that the user has fallen asleep when it is not determined that the user is awake. Sleep state determination device. After determining that the user has fallen asleep, the state determination unit may determine a fourth determination variable that is less than the period corresponding to the third determination variable based on the biological information acquired during the period corresponding to the third determination variable. 4. The apparatus according to claim 1, wherein when all of the information indicating the presence or absence of body movement included in the biological information acquired in the corresponding period indicates that there is body movement, the user is determined to be awake. 5. The sleep state determination device according to claim 1. The state determination unit, after determining that the user falls asleep, based on the biological information acquired in a period corresponding to a fifth determination variable, based on all of the information indicating the presence or absence of body movement included in the biological information The sleep state determination device according to any one of claims 1 to 4, wherein it is determined that the user has turned over when body movement is indicated. When the state determination unit determines that the user has not turned over, based on the biological information acquired during a period corresponding to a sixth determination variable after determining that the user has fallen asleep, the biological information The sleep state determination according to any one of claims 1 to 5, wherein when all of the information indicating the presence / absence of body movement included in (1) indicates that there is no body movement, the user needs to respond to a bedsore. apparatus. The alarm notification unit further comprising: an alarm notification unit that notifies a predetermined notification destination of the determination result when the determination result determined by the state determination unit satisfies a predetermined alarm notification condition. The sleep state determination device according to the paragraph. The sleep state determination device according to claim 7, wherein the alarm notification unit notifies a predetermined notification destination of a determination result determined by the state determination unit together with location information indicating a location where the user is located. The sleep state determination device according to any one of claims 1 to 7,
A sleep state determination system comprising: an administrator terminal that receives determination results of a plurality of users from the sleep state determination device and displays the received determination results of the plurality of users in a list. A measurement result acquisition unit for acquiring the measured biological information of the user,
Based on the acquired biological information, the state determination unit determines whether the user has left the bed or has entered the bed, and when the user has determined that the user has entered the bed, determines whether the user is awake. A sleep state determination method, comprising: a state determination step of determining whether a person falls asleep; and an output step in which an output unit outputs a determination result determined to the state determination unit.

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