JP7420207B2 - Sleep state determination system and sleep state determination method - Google Patents

Description

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

There is a sleep state measuring device that obtains biological information from a living body to obtain information that is an index of a sleep state (for example, see Patent Document 1). By using such a sleep state measuring device, it is possible to grasp the heartbeat, breathing, etc. of a living body. Furthermore, biological information can also be used as information for estimating the quality of sleep such as REM sleep and non-REM sleep.
On the other hand, in facilities where users stay overnight, such as hotels, medical facilities, and nursing care facilities, nighttime monitoring is carried out to periodically check whether users are getting proper sleep. If the technology described in Patent Document 1 is used in such a facility, it is possible to understand the quality of a user's sleep and determine whether or not he or she is getting adequate sleep.

JP2017-064338A

However, at night, there are fewer personnel at the hotel or facility, so when trying to watch over multiple users, the interval between patrols may become longer. If the interval between patrols becomes long, there is a problem in that if a user wakes up between patrols, it becomes difficult to immediately respond to the user who wakes up.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a sleep state determination system and a sleep state determination method that can grasp the sleep-related state of each user.

In order to solve the above-mentioned problems, the present invention includes a measurement result acquisition unit that acquires biological information of each user in a facility, and a measurement result acquisition unit that acquires biological information of each user in a facility, and a measurement result acquisition unit that acquires biological information of each user in a facility. a state determination unit that determines each sleep state, including whether each of the users has left the bed or entered the bed, and if the user has entered the bed, whether the user is awake or has fallen asleep; an output unit that outputs the sleep state determined by the state determination unit; and a determination based on the sleep state that the sleep state satisfies an alarm notification condition including leaving the bed or being awake for a threshold time or more. a sleep state determination device having an alarm notification unit that issues an alarm notification when the sleep state determination device detects whether each of the users is out of bed or not, based on the sleep state of each of the users received from the sleep state determination device; A list display that displays whether the user is in bed or not, and if the user is in bed, whether the user is awake or asleep, and a history of the alarm notifications performed by the alarm notification unit. an administrator terminal that displays an alarm history adjacently, the administrator terminal having a management screen for setting the alarm notification condition and a determination variable for determining a sleep state. Displays a management screen that includes an input field for setting an alarm setting time period, which is the time period in which the alarm notification is to be performed, and an input field for setting the number of records, and The input alarm setting time period and the number of records are stored in the storage unit of the sleep state determination device, and the measurement result acquisition unit acquires the biological information from the record every predetermined time interval. The sleep state determination system continuously executes the alarm notification for a number of times equal to the number of times, and the alarm notification unit performs the alarm notification during the alarm setting time period stored in the storage unit of the sleep state determination device.

Further, the present invention provides a method in which the measurement result acquisition unit of the sleep state determination device acquires the biological information of each of the users in the facility, and the state determination unit of the sleep state determination device acquires the biological information obtained by the measurement result acquisition unit. A sleep state of each of the users based on biological information, including whether each of the users is out of bed or in bed, and if in bed, whether they are awake or asleep. the sleep state determination device outputs the sleep state determined by the state determination unit, and the alarm notification unit of the sleep state determination device determines whether to leave the bed or wake up based on the sleep state. An alarm notification is performed when it is determined that the sleep state satisfies the alarm notification condition including that the state has continued for a threshold time or more, and the administrator terminal issues the sleep state of each of the users received from the sleep state determination device. a list display for displaying a list of whether each of the users is out of bed or in bed, and if each user is in bed, whether they are awake or asleep, based on the above; The alarm history, which is a history of the alarm notifications performed by the alarm notification unit, is displayed adjacently, and the administrator terminal sets the alarm notification conditions and a determination variable for determining the sleep state. displaying a management screen for setting the alarm setting time period, which is the time period for the alarm notification, and an input field for setting the number of records; The alarm setting time period and the number of records input in correspondence with the input field are stored in the storage unit of the sleep state determination device, and the measurement result acquisition unit acquires the biological information according to a predetermined schedule . The sleep state determination is performed continuously for a number of times equal to the number of records for each time width , and the alarm notification unit performs the alarm notification in the alarm setting time period stored in the storage unit of the sleep state determination device. It's a method.

As explained 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 in bed, it is determined whether the user has fallen asleep or is awake. It is possible to understand the sleep-related state of the person.

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

DESCRIPTION OF THE PREFERRED EMBODIMENTS A sleep state determination system and a sleep state determination device according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a configuration diagram showing the configuration of a sleep state determination system 1 according to an 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. 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 are each connected to be communicable via a communication network 70.

The sleep state determination device 10 acquires the user's biological information from the communication control device 30. Here, the biological information includes, for example, information indicating the heart rate and breathing rate of the user in bed, the presence or absence of body movement, and the depth of sleep of the user. The depth of sleep 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 technique described in Patent Document 1. It's fine. However, the depth of the user's sleep may be information derived based on information that can be used as an index for determining the depth of sleep, such as the balance of the user's autonomic nervous system, the degree of stress, or the degree of relaxation. may be derived based on the information shown.

The sleep state determination device 10 determines the sleep state based on the acquired biometric information of the user. The sleep state is a state of sleep, and is information indicating, for example, whether the user is in bed or out of bed, and if the user is in bed, whether he is awake or asleep. Here, the sleep state includes the state after falling asleep (whether the sleep is ongoing or awake), whether or not the person turns over during sleep after falling asleep, and how to deal with bedsores (hereinafter referred to as bedsores). ) is necessary or not.
The sleep state determination device 10 transmits the received biological information of the user and information indicating the sleep state determination result to a predetermined destination. The 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 pressure acting in the film thickness direction. The sensor sheet 20 is installed, for example, under the mattress of the bed on which the user sleeps, or between the mattresses when a plurality of mattresses are provided, such as when the mattress has a two-layer structure. Detect the user's movements when the user is present. The sensor sheet 20 outputs the detected results to the communication control device 30.

The communication control device 30 acquires the electrical signal detected by the sensor sheet 20. The communication control device 30 calculates the user's biological information by analyzing the acquired electrical signals. For example, the communication control device 30 extracts signals in a predetermined frequency band corresponding to heartbeats, breathing, and body movements by filtering the acquired electrical signals, and calculates heartbeats per unit time based on the extracted signals. Calculate the number of breaths, breathing rate, and presence or absence of body movement. Furthermore, 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 user's biological information to the sleep state determination device 10.

The terminal device 40 is, for example, a tablet terminal provided in the room where the user sleeps, 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 care facility, a hospital, etc., the terminal device 40 may be a smartphone or the like owned by a user's family, a care worker, a medical worker, etc. in charge of the user. good.
Furthermore, an application program is installed in the terminal device 40 that displays the user's biological information and sleep state determination results based on the information transmitted from the sleep state determination device 10. The terminal device 40 starts the application program and receives biological information and information indicating the sleep state determination result from the sleep state determination device 10. The terminal device 40 displays the received biological information and information indicating the sleep state determination result on the display screen by the operation of the application program. Alternatively, the terminal device 40 can access a separate URL (Uniform Resource Locator) that displays biological information and sleep status from a WEB (World Wide Web) browser, and view the biological information and sleep information on the WEB application. . Thereby, when the sleep state determination system 1 is applied to a nursing care facility, a hospital, etc., a medical worker or the like who possesses the terminal device 40 can grasp the user's sleep state.
Note that the terminal device 40 may receive only one of the biological information and the information indicating the sleep state determination result. In this case, for example, when the sleeping state determining device 10 determines that the sleeping user has woken up, the terminal device 40 receives a notification to that effect by e-mail or the like. Thereby, a medical worker or the like who owns the terminal device 40 can understand that the sleeping user has woken up.

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 user's biological information and information indicating the sleep state determination result from the sleep state determination device 10 . The administrator terminal 60 displays a "real-time sleep state list screen of all users", "real-time sleep state detailed screen of each user", and "vital report" as information indicating the received biometric information and sleep state determination results of the users. ” (see FIGS. 2 to 4) on the display screen or output to the printing device 50 and printed.
For example, when the sleep state determination system 1 is applied to a nursing care facility, a hospital, etc., the administrator terminal 60 is a terminal device installed at a place where a care worker or a medical worker is permanently stationed, such as a nurse's station. In this case, the administrator terminal 60 determines the sleep state of the user, that is, whether the user is in bed or out of bed, and whether the user is awake or asleep, based on the received biological information and information indicating the result of determining the sleep state. It is possible to know whether the device is inside or not. This makes it possible to determine whether the user has gone to bed after the lights are turned off or whether the user has woken up during the night.

The administrator terminal 60 also sets alarm notification conditions, which are conditions for notifying an alarm. The alarm here is an alarm that is notified to the administrator or the like who views the terminal device 40 or the administrator terminal 60 when the user's sleeping state satisfies a specific condition. By setting alarm notification conditions, the administrator terminal 60 can receive a notification when a user wakes up in the middle of the night, for example, and can monitor whether there are any changes in the user's physical condition. It will be possible to take early measures, such as going to see the site.
For example, the administrator terminal 60 displays a management screen (see FIG. 5) that displays setting items for setting alarm notification conditions, and allows the administrator to perform input operations from an input device (not shown) such as a keyboard or mouse. The setting value inputted to the setting item is acquired by , and the acquired value is stored in the alarm condition storage unit 107 of the sleep state determination device 10 described later.

The administrator terminal 60 also sets various parameters (hereinafter also referred to as determination variables) used for determining the sleep state. The determination variable here is, for example, a variable used when determining whether to go to bed or wake up. By individually setting determination variables, the administrator terminal 60 can change the conditions for determining bed entry, awakening, etc., depending on the environment of the facility, the condition of bedding, the average age of users in the facility, etc. This makes it possible to more accurately determine bed admission, awakening, etc.
For example, the administrator terminal 60 displays a management screen (see FIG. 6) that displays setting items for setting various parameters, and the administrator or the like inputs the settings using an input device such as a keyboard or mouse. The input setting value is acquired, and the acquired value is stored in the determination threshold storage unit 103 of the sleep state determination device 10, which will be described later.

The printing device 50 prints the "real-time sleep state list screen of all users", the "real-time sleep state detailed screen of each user", and the "vital report" output from the administrator terminal 60.
The communication network 70 is, for example, a communication network that includes some 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.

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

The measurement result acquisition unit 101 acquires the measured biometric information of the user periodically (for example, every 5 seconds). 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 electrical signal detected by the sensor sheet 20 . The measurement result acquisition unit 101 stores the acquired user's biometric information in the biometric information storage unit 106.

The state determination unit 102 determines the sleep state based on biological information.
The state determining unit 102 determines whether the user is in bed or out of bed, for example, based on information indicating heart rate included in biological information. Specifically, the state determination unit 102 determines that the user is in bed if the acquired heart rate of the user is equal to or higher than a predetermined threshold Th and is continuously detected for a predetermined period T1. It is determined that The bed admission variables (for example, threshold Th, period T1, etc.) used to determine bed admission here are examples of determination variables. In particular, the period T1 is an example of a "first determination variable."
The admission variable is stored in the determination threshold storage unit 103, for example. In this case, the state determining unit 102 uses the bed admission variable acquired with reference to the determination threshold storage unit 103 to determine whether the user is in bed.
On the other hand, if the state determining unit 102 does not determine that the user is in bed, it determines that the user is out of bed. The state determining unit 102 outputs information indicating whether the user is in bed to the alarm notification unit 104 and the output unit 105.

When determining that the user is in bed, the state determination unit 102 determines whether the user is awake or asleep based on information indicating body movement included in the biological information. Specifically, the state determination unit 102 detects that the body movement of the user that was acquired after the biological information determined to be in bed continues for a predetermined period T2. If so, it is determined that the user is awake. Here, the post-admission wakefulness variable (for example, period T2, etc.) used to determine post-admission wakefulness is an example of a determination variable. In particular, the period T2 is an example of a "second determination variable."
The arousal variable after going to bed is stored in the determination threshold storage unit 103, for example. In this case, the state determining unit 102 uses the post-bed wakefulness variable acquired with reference to the determination threshold storage unit 103 to determine whether the user who has gone to bed is awake.
On the other hand, when the state determination unit 102 determines that the user is in bed, but does not determine that the user is awake, it determines that the user has fallen asleep.
The state determination unit 102 outputs information indicating whether the user is awake or asleep to the alarm notification unit 104 and the output unit 105.

When determining that the user has fallen asleep, the state determining unit 102 determines whether the user is continuing to sleep (sleeping) or has woken up based on information indicating body movement included in the biological information. do. Specifically, the state determination unit 102 determines that the body movements of the user that were continuously acquired for a predetermined period T3 after the biological information determined that the user fell asleep are continuously acquired for a predetermined period T4. If motion is detected, it is determined that the user who has fallen asleep has woken up. Here, the post-sleep wakefulness variables (for example, periods T3, T4, etc.) used to determine wakefulness after sleep onset are examples of determination variables. 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 arousal variable after falling asleep is stored in the determination threshold storage unit 103, for example. In this case, the state determining unit 102 uses the post-sleep wakefulness variable acquired with reference to the determination threshold storage unit 103 to determine whether the user has woken up after falling asleep.
On the other hand, if the state determining unit 102 determines that the user has fallen asleep but does not determine that the user has woken up, the state determining unit 102 determines that the user is continuing to sleep (sleeping). The state determining unit 102 outputs information indicating whether the user is awake or asleep after falling asleep to the alarm notification unit 104 and the output unit 105.

If the state determination unit 102 determines that the user has fallen asleep, it determines whether the user has turned over or not based on information indicating body movement included in the biological information. Specifically, the state determining unit 102 detects that the user has body movements when the body movements of the user acquired after the biological information determined to have fallen asleep are continuously detected as having body movements for a predetermined period T5. It is determined that the patient has turned over. Here, the tossing and turning variable (for example, period T5, etc.) used for determining whether to turn over in bed is an example of a determination variable. In particular, the period T5 is an example of a "fifth determination variable."
The tossing and turning variable may be set arbitrarily, but for example, period T5 is set to be shorter than period T4, which is used to determine wakefulness after falling asleep.
The tossing and turning variable is stored in the determination threshold storage unit 103, for example. In this case, the state determining unit 102 uses the tossing and turning variable acquired with reference to the determination threshold storage unit 103 to determine whether or not the user has turned over.
The state determining unit 102 outputs information indicating whether the user has turned over in bed to the alarm notification unit 104 and the output unit 105.

If the state determining unit 102 determines that the user is not turning over in bed, the state determining unit 102 may determine whether bed sore treatment is necessary based on information indicating body movement included in the biological information. Specifically, if the state determining unit 102 determines that the user has not turned over continuously for a predetermined period T6 based on the body movement of the user acquired after the biological information determined that the user has fallen asleep, the state determining unit 102 determines that the user has bedsores. It is determined that a response is necessary. Here, the bedsore variable (for example, period T6) used to determine whether or not bed sore treatment is necessary is an example of a determination variable. In particular, the period T6 is an example of a "sixth determination variable."
The bedsore variable is stored in the determination threshold storage unit 103, for example. In this case, the condition determining unit 102 uses the bedsore variables acquired with reference to the determination threshold storage unit 103 to determine whether or not the user needs bed sore treatment.
The condition determining unit 102 outputs information indicating whether or not the user needs treatment for bedsores 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-mentioned threshold Th and periods T1 to T5) used when determining the sleep state. A control unit (not shown) of the sleep state determination device 10 stores, for example, a preset determination variable in the determination threshold storage unit 103. In addition, when a setting value is changed for a setting item of a judgment variable displayed on the management screen of the administrator terminal 60, the control unit of the sleep state judgment device 10 controls the setting value of the changed judgment variable. 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 predetermined alarm notification conditions. The alarm notification unit 104 notifies an alarm to an e-mail address set in advance via the management screen of the administrator terminal 60, for example. Thereby, if 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 the administrator or the like who views 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 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 sleeping state to the terminal device 40 and the administrator terminal 60.

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

Alarm condition storage unit 107 stores alarm notification conditions. For example, the control unit of the sleep state determination device 10 causes the alarm condition storage unit 107 to store preset alarm notification conditions. In addition, when the setting value of the alarm notification condition setting item displayed on the management screen of the administrator terminal 60 is changed, the control unit of the sleep state determination device 10 controls the The set value is stored in the alarm condition storage unit 107.

Here, the display of the sleep state will be explained using FIGS. 2 to 4. FIGS. 2 to 4 are diagrams showing display examples of sleep states according to the embodiment. FIG. 2 shows an example of a "real-time sleep state list screen of all users," FIG. 3 shows an example of a "real-time sleep state detailed screen of each user," and FIG. 4 shows an example of a "vital report."
As shown in FIG. 2, the sleep state is shown, for example, in a "real-time list screen of all users' sleep states" that lists the 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 a case where the sleep states of a plurality of users who use a care facility are shown in a list. Image 600 is composed of regions 601 to 603.

In the area 601, bibliographical items such as the name of the facility where the sleep state determination system 1 has been introduced and the current date and time are listed.
The area 602 has the title "List display" and displays the user's name (user), bed entry/exit, heart rate, breathing rate, sleep state, and installation period for each installation location where the sleep state determination device 10 is installed. will be published respectively. In this example, as shown in the legend at the bottom of the area 602, bed entry is indicated by icons corresponding to bed exit and bed entry, and the depth of the user's sleep is shown as wakefulness, sleep 1 to sleep. This is indicated by the display of icons corresponding to each of the four states.
The area 602 also includes a column 602A labeled "Details Display", a column 602B labeled "Report Display", a column 602C labeled "Data Output", and a column 602D in which a date can be set. Will be published. On the display screen of the administrator terminal 60, a "real-time list screen of all users' sleep states" is displayed that shows the current states of all users in a list. When an individual user is selected and the "details display" column 602A is selected by a mouse click operation, the administrator terminal 60 displays "Each user's details" on the date set in the column 602D on the display screen. Display the sleep status real-time details screen. Note that if the column 602A is clicked with no date set in the column 602D, a "real-time detailed sleep state screen for each user" on the current date is displayed.
Furthermore, when an individual user is selected and the "report display" column 602B is selected, the administrator terminal 60 displays the "vital report" for the date set in the column 602D on the display screen. The "vital report" shows average vital data (heart rate, breathing rate, sleeping time, degree of deep sleep, etc.) of each user on past dates.
Furthermore, 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 the area 603, the installation location, user's name (user), event, and occurrence time are posted for each alarm notification under the title "Alarm History." The event here indicates a sleep state that triggers an alarm notification. In this example, "awakening," "entering bed," "leaving bed," and "communication cutoff" are each shown as events that triggered the alarm notification. 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 for 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, the sleep state determination device 10 notifies the administrator terminal 60 of an alarm when the period during which no health check signal is received from the communication control device 30 exceeds a predetermined period.

As shown in FIG. 3, the sleep state is shown in a "real-time detailed sleep state screen for each user" that shows the sleep state of one user (in this example, user A) in detail using graphs, etc. It may be possible to do so. The image 610 is, for example, an image displayed when the "detail display" column 602A displayed in the area 602 of FIG. 2 is selected. Image 610 is composed of regions 611-613.

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 with the title "Display date" for setting the sleep state of the date desired to be viewed is posted. Under the title "Display Contents," radio buttons for selecting "Sleep,""HeartRate,""Respiration,""BodyMovement," and "Getting Out of Bed" are listed in the column for selecting the content you wish to view. Ru. In this example, "sleep" is selected as the display content.
In addition, in the area 612, with the title "Comparison display", the sleep state to be compared with the display date is displayed as "(display) none", "(display of the previous day)", and "display of (display of the day before)". A radio button to select `` is displayed. In this example, "(display) none" is set as the comparison display.
In the lower part of the area 612, there is a graph showing chronological changes in the sleep state (in this example, the depth of sleep on a predetermined date) corresponding to the set "display date" and "display content". Will be published. In this example, the depth of sleep is shown in terms of time on the horizontal axis and sleep depth (sleep level) on the vertical axis. In this example, the "comparison display" display is set to "none", so the graph showing the depth of sleep the other day or the day before the previous day is not displayed as a comparison target.
In this example, the depth of sleep is listed in the following stages: "awakening,""light,""slightlylight,""slightlydeep," and "deep." This sleep depth and the sleep depth indicated by the icon 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 by the administrator terminal 60 from the sleep state determination device 10 is posted under the title "Latest state display." In this example, "leave/enter bed", "fall asleep/wake up", "heart rate", and "respiration rate" are listed as sleep states, respectively. Further, in this example, similarly to the area 602 in FIG. 2, leaving and entering bed, and depth of sleep are indicated by icons.

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

In the area 616, bibliographical items such as the name of the facility (in this example, "○○ Corporation") and the current date and time are posted.
In area 617, a column titled "User" for selecting a user is posted. Under the title "Display date," there is a column for setting the sleep state of the date you wish to view. Under the title "Displayed day status", the selected user's sleep time, average heart rate, average breathing rate, number of body movements during sleep, total time out of bed, total time in bed, and deep sleep level are displayed for the selected user. Each will be posted.
In the area 618, a graph showing the time-series change in bed admissions on the day set in the "Display date" column of the area 617 is displayed. In this example, the horizontal axis shows time, and the vertical axis shows leaving and entering the bed.
Area 619 contains a graph showing chronological changes in the degree of sleep (in this example, wakefulness, light, slightly shallow, somewhat deep, deep) on the day set in the "Display date" column of area 617. be done. In this example, the horizontal axis shows time and the vertical axis shows the degree of sleep.

Here, the management screen of the administrator terminal 60 will be explained using FIGS. 5 and 6. 5 and 6 are diagrams showing an example of the management screen of the administrator terminal 60 according to the embodiment. FIG. 5 shows an example of a screen for setting alarm notification conditions, and FIG. 6 shows an example of a screen for setting determination variables.

As shown in FIG. 5, the alarm notification conditions are set on the management screen of the administrator terminal 60, for example. An image 620 for setting alarm notification conditions is composed of areas 621 and 622.
In the area 621, bibliographical items such as the name of the facility and the current date and time are posted.
In the area 622, a column (alarm notification settings) for setting alarm notification conditions is posted with the title "System Settings." The alarm notification settings include the following items: target event, threshold, event establishment time, alarm setting time period, and email notification. Also, columns 622A to 622G are posted in which each item is set as an alarm notification.
In the target event, event names such as getting out of bed, awakening, decrease in heart rate, or communication interruption as sleep states that trigger alarm notification, and check boxes for selecting the event are listed. In this example, event names whose checkboxes are checked are displayed in black, and event names whose checkboxes are not checked are displayed in gray.
The threshold value is a column for setting a threshold value for determining that an event has occurred when a sleep state with a numerical value such as heart rate is selected as an event. In this case, an alarm notification is performed when the sleep state becomes equal to or more than (or less than) a value set as a threshold value.
The event establishment time is a column for setting the duration of the sleep state selected as an event. In this case, if the sleeping state continues for the time set as the event establishment time, an alarm notification is performed.
The alarm setting time slot is a field for setting the start time and end time of the time slot for alarm notification. In this case, an alarm notification is performed when an event occurs during the alarm setting time period.
The email notification includes a checkbox for selecting whether or not to send an email notification as an alarm notification. Further, in this example, the address of the e-mail that sends the alarm notification is displayed in the column labeled "Common notification destination e-mail address."

In the column 622A of the area 622, a condition is set as the alarm notification setting, which is a case where it is determined that the user is out of bed for 5 minutes during the alarm setting time period (21:00 to 6:00). ing. Furthermore, the settings are such that email notifications are not sent when the alarm notification conditions are met.
In the column 622B of the area 622, a condition is set as the alarm notification setting, which is a case in which the user is determined to be out of bed for 30 minutes during the alarm setting time period (21:00 to 6:00). ing. Furthermore, the setting is such that an email notification is sent when the alarm notification conditions are met.
In the column 622C of the area 622, a condition is set as an alarm notification setting that the user remains awake for 10 minutes during the alarm setting time period (21:00 to 4:00). ing. Furthermore, the settings are such that email notifications are not sent when the alarm notification conditions are met.
In the column 622D of the area 622, a condition is set as an alarm notification setting that the user's heart rate is determined to be lower than 20 and remains open for 3 minutes during the alarm setting time period (no setting). ing. Furthermore, the settings are such that email notifications are not sent when the alarm notification conditions are met.
In the column 622E of the area 622, the alarm notification settings include a condition in which the user's heart rate is determined to have decreased to 0 (zero) and remains open for 1 minute during the alarm setting time period (no setting). It is set. Furthermore, the setting is such that an email notification is sent when the alarm notification conditions are met.
In the column 622F of the area 622, the alarm notification settings include a condition in which the state in which the user's breathing is determined to have decreased to 0 (zero) continues for 3 minutes during the alarm setting time period (no setting). However, if this condition is met, alarm notifications and email notifications are set not to be performed.
In the column 622G of the area 622, the alarm notification settings include a condition in which the sleep state determination device 10 is unable to receive user information from the communication control device 30 for 30 minutes during the alarm setting time period (no setting). It is set. Furthermore, the setting is such that an email notification is sent when the alarm notification conditions are met.

As shown in FIG. 6, the determination variable is set, for example, on the management screen of the administrator terminal 60. An image 630 for setting determination variables is composed of areas 631 and 632.
In the area 631, bibliographical items such as the name of the facility and the current date and time are posted.
In the area 632, a field for setting determination variables (sleep analysis parameters) is listed under the title "System Settings." The sleep analysis parameters include the following items: bed entry determination, bed leaving determination, sleep onset determination, awakening determination, turning over determination, and bed sore response determination.

Each item is provided with columns 632A to 632G in which the number of times is set. The number of times set in columns 632A to 632G indicates the number of times that biological information such as heartbeat and body movement is periodically acquired. For example, when biometric information is acquired every 5 seconds, biometric information acquired six times in succession includes (5×6=) 30 seconds worth of biometric information. In other words, the number of times biometric information is acquired corresponds to the period during which biometric information is acquired. In other words, the number of times biometric information is acquired is an example of a determination variable.

In bed admission determination, a column 632A is provided to set the number of consecutive heartbeat detections. In this case, when a heartbeat is detected consecutively the number of times set in column 632A, it is determined that the patient is in bed.
A column 632B for setting the number of consecutive times that a heartbeat is not detected is included in the bed leaving determination. In this case, if a heartbeat is not detected consecutively the number of times set in column 632B, it is determined that the patient has left the bed. In addition, in this embodiment, either one of the above-mentioned bed entry determination and bed leaving determination may be used. In this case, if the bed admission determination is used, it is determined that the patient has left the bed if it is not determined that the patient has entered the bed. On the other hand, when the bed leaving determination is used, if it is not determined that the patient has left the bed, it is determined that the patient has entered the bed.

In the sleep onset determination, a column 632C for setting the number of consecutive heartbeat detections and a column 632D for setting the number of consecutive body movement detections are listed. In this case, it is determined that the person has fallen asleep when a heartbeat is detected consecutively the number of times set in the field 632C and no body movement is detected consecutively the number of times set in the field 632D.
The arousal determination includes a column 632E for setting the number of consecutive body movement detections, and a column 632F for setting the number of times a body movement is detected out of the number of body movement detections set in the column 632E. Ru. In this case, if the number of body movements set in the field 632F is detected among the body movements continuously acquired the number of times set in the field 632E after falling asleep, it is determined that the person has woken up after falling asleep.

A column 632G for setting the number of consecutive body movement detections is included in the rollover determination. In this case, after falling asleep, if body movements are detected consecutively the number of times set in the column 632G, it is determined that the patient has turned over.
A column 632H for setting the time for continuously detecting body movements is listed in the bed sore response determination. In this case, if no body movement is detected continuously for the time set in column 632H after falling asleep, it is determined that bed sore treatment is necessary.

Here, the operation of the sleep state determination device 10 will be explained using FIGS. 7 and 8. FIGS. 7 and 8 are flowcharts illustrating an example of the operation of the sleep state determining device 10 according to the embodiment. FIG. 7 shows the flow of the overall process performed by the sleep state determining device 10, and FIG. 8 shows the flow of the process by which the sleep state determining device 10 determines the sleep state.

As shown in FIG. 7, the sleep state determination device 10 first acquires a predetermined number of consecutive biological information records (step S100). The number of records indicates the number of times biometric information is periodically acquired. The number of records here reflects the value (for example, number of records = 6) set in the column 632A as the admission determination on the determination variable setting screen shown in FIG.
The sleep state determination device 10 determines whether all the heart rates of the acquired biological information are equal to or higher than a predetermined threshold Th (step S101).
When all heart rates are equal to or higher than the threshold Th, the sleep state determination device 10 determines that the person is in bed (step S102), and performs a process for determining the sleep state (state determination process) (step S103).
On the other hand, if the heart rate of the acquired biological information is less than the predetermined threshold Th, the sleep state determination device 10 determines that the person has left the bed (step S104), and returns to the process shown in step S100.

As shown in FIG. 8, in the state determination process, the sleep state determination device 10 first acquires a predetermined number of consecutive biological information records (step S200). The number of records here reflects the value (for example, number of records=36) set in the column 632D as the sleep onset determination on the determination variable setting screen shown in FIG.
The sleep state determination device 10 determines whether or not all body movements in the acquired biological information indicate "body movement" (step S201).
The sleep state determination device 10 determines that the person is awake when all 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 conditions shown in FIG. The sleep state determination device 10 then returns to the process shown in step S100.
On the other hand, if all the body movements are not "with body movement", the sleep state determination device 10 determines that the person has fallen asleep (step S203). In this case, the sleep state determination device 10 issues an alarm notification according to the alarm notification conditions shown in FIG.

Next, the sleep state determination device 10 acquires a predetermined number of consecutive biological information records (step S204). The number of records here reflects the value set in the column 632E as the wakefulness determination on the determination variable setting screen shown in FIG. 6 (for example, number of records = 12).
The sleep state determination device 10 determines whether or not consecutive body movements of a predetermined number of records or more among the acquired body movements are "body movements present" (step S205). The number of records here reflects the value set in the column 632F as the wakefulness determination on the determination variable setting screen shown in FIG. 6 (for example, number of records = 6).
The sleep state determination device 10 determines that the person has woken up if a predetermined number of records or more of consecutive body movements 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 conditions shown in FIG. The sleep state determination device 10 then returns to the process shown in step S100.

The sleep state determination device 10 also acquires a predetermined number of consecutive biological information records (step S207). The number of records here reflects the value (for example, number of records = 4) set in the column 632G as the determination of turning over on the determination variable setting screen shown in FIG.
The sleep state determining device 10 determines whether or not all body movements in the acquired biological information indicate "body movement" (step S208).
The sleep state determination device 10 determines that the patient has turned over when all body movements are "body movement" (step S209). In this case, the sleep state determination device 10 issues an alarm notification according to the alarm notification conditions shown in FIG. The sleep state determination device 10 then returns to the process shown in step S203.
On the other hand, if all body movements are not "with body movement", the sleep state determination device 10 determines whether or not no body movement continues for a predetermined period or more after falling asleep (step S210). . The predetermined time here reflects the value (for example, 3 [hours]) set in the column 632H as the bed sore response determination on the determination variable setting screen shown in FIG. 6 .
The sleep state determining device 10 determines that measures against bedsores are necessary if the patient continues to not move 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 conditions shown in FIG. The sleep state determination device 10 then returns to the process shown in step S203.

As described above, the sleep state determination device 10 of the embodiment determines whether the patient is in bed or out of bed based on biological information, and when it is determined that the sleep state is in bed, the sleep state determination device 10 of the embodiment determines whether the sleep state is in bed or out of bed. Since the system determines whether the patient is asleep or has fallen asleep, it is possible to grasp the sleep-related state based on biological information even without special knowledge. In particular, in nursing care facilities and the like, many users are bedridden, and even if they are in bed, they are not necessarily asleep. Therefore, by determining whether or not the user has fallen asleep after going to bed, it is possible to accurately grasp the user's sleeping time, which is useful for health management. In addition, the presence of a user who is in bed but awake can be detected, and care workers can check on the user and talk to them, allowing them to provide thorough nursing care. I can do it.

For example, in the case of patrols at hotels and other facilities, there are many cases in which people work in shifts, so it may be difficult for the people in charge to pass on the detailed information of multiple users to each other.
On the other hand, if the present invention is utilized, information about multiple users can be viewed, such as past heart rate, breathing rate, number of times of turning over, sleep state, etc. of each individual user, making the handover easier and more reliable. It is possible to implement Furthermore, if there is a change in the user during patrolling, it is possible to find out the cause of the change based on the above-mentioned past information about the user. Furthermore, it is also possible to utilize the above-mentioned past information about the user as a material for informing the user's family in a remote location away from the facility about the user's situation.

Moreover, since the sleep state determination device 10 of the embodiment can output the results of determining the sleep state, by displaying the sleep states of multiple users in a list, the administrator can determine the sleep state at once. can be grasped. In addition, since it is possible to output the sleep state history of individual users, the user and the user's family can view the sleep state history, and the user's history can be shared between care workers and family members. It is possible to share information.

In addition, when it is determined that the sleep state determination device 10 of the embodiment has fallen asleep, it determines whether the user has woken up, whether or not he has turned over, and whether or not bed sore treatment is necessary. It is possible to understand the status of Therefore, when a user who has fallen asleep wakes up, a care worker can check on the user before problem behavior such as wandering occurs, making it possible to prevent problem behavior.
In addition, the sleep state determination device 10 of the embodiment can send an alarm notification to a predetermined notification destination when an awakening or an event occurs. However, in response to an alarm notification, it is possible to give priority to patrolling awake users, making it possible to provide necessary nursing care more reliably.
Further, the sleep state determination system 1 of the embodiment includes a 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 this, it is possible to understand the sleep states of multiple users at once, and it is easy to recognize which users have woken up or fallen asleep, making it possible to conduct patrols efficiently and at the 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. A nurse call system is a system in which users who are hospitalized or resident in a facility communicate with nurses and care staff. This nurse call system may have a function of transferring a call from a user to a mobile terminal (such as a PHS) carried by a nurse or the like. By linking the sleep state determination system 1 with such a nurse call system, it becomes possible to notify the nurse in charge of the user's sleep state and alarm notification using the existing system.
Therefore, an example in which the sleep state determination system 1 described above is linked with a nurse call system will be described as a modification of the embodiment. In the following description, only configurations that are different from the embodiment will be described, and similar configurations will be denoted by the same reference numerals and their description will be omitted.

FIG. 9 is a configuration diagram showing the configuration of a sleep state determination system 1A in a modified example 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. The terminal device 40, the printing device 50, the administrator terminal 60, the interface server 80, and the nurse call system 90 are each communicably connected via an in-facility LAN (Local Area Network).

Note that although the example in this figure illustrates a case where the interface server 80 is connected to an in-facility LAN and provided within the facility, the interface server 80 may be provided outside the facility. In this case, the interface server 80 is connected to the communication network 70 and communicates with the nurse call system 90 via the communication network 70 and the in-facility LAN.

The sleep state determination device 10A outputs the received user's biological information and information indicating the sleep state determination result to the interface server 80. The sleep state determination device 10A includes a state determination section 102A, an alarm notification section 104A, and an output section 105A.
The state determining unit 102A determines the sleeping 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 the installation location of the sensor sheet 20, and may, for example, indicate the hospital room number and bed number, or the name of the user in the hospital room. It may include. For example, the state determination unit 102A stores in advance information in which the identification number of the sensor sheet 20 and the installation location information are associated with each other in a storage unit (not shown), and refers to the storage unit to determine the installation location information of the sensor sheet 20. get. Here, the installation location information of the sensor sheet 20 is an example of "location information indicating the location where the user is".

The alarm notification unit 104A notifies the interface server 80 of an alarm together with the installation location information of the sensor sheet 20 when the sleep state determined by the state determination unit 102A satisfies a predetermined alarm notification condition.
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 acquires the alarm notification from the sleep state determination device 10A and the notification of the user's sleep state, and transmits the obtained notification to a nurse call base unit in the nurse call system 90 or a mobile terminal carried by a nurse or the like. (PHS, etc.). Here, the interface server 80 determines which of the acquired notifications should be sent to the nurse call system 90, which notification should be sent to which nurse call base device, or which mobile terminal (PHS) carried by which nurse, etc. etc.) may be selected. Here, the interface server 80 is an example of a "predetermined notification destination."

Specifically, the interface server 80 converts an electrical signal indicating the notification content from the sleep state determination device 10A into an electrical signal for nurse call communication according to the specifications of the nurse call system 90, and transmits the converted electrical signal. , and is transmitted to a cooperation 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 base device, and a mobile terminal such as a PHS. The cooperation adapter functions as a control unit for 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 device to a nurse call master device, etc.). A nurse call handset is a communication terminal used by inpatients and residents of a facility. A nurse call base station is a communication base station installed at a place where nurses and care staff are waiting, such as a nurse station. A mobile terminal such as a PHS is a mobile terminal that nurses and the like carry with them during work.

As described above, the sleep state determination device 10A in the modified example of the embodiment notifies a predetermined notification destination (for example, the interface server 80) of an alarm notification regarding the sleep state together with the installation location information of the sensor sheet 20. . As a result, the sleep state determination device 10A according to the modified example of the embodiment uses the existing communication system (for example, the nurse call system 90) to issue an alarm notification and respond to users who need to confirm their sleep state. This makes it possible to do this more reliably.

All or part of the sleep state determination system 1 (1A) and the sleep state determination device 10 (10A) in the embodiment described above 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 the recording medium may be read into a computer system and executed. Note that the "computer system" herein includes hardware such as an OS and peripheral devices. Furthermore, the term "computer-readable recording medium" refers to portable media such as flexible disks, magneto-optical disks, ROMs, and CD-ROMs, and storage devices such as hard disks built into computer systems. Furthermore, a "computer-readable recording medium" refers to a storage medium that dynamically stores a program for a short period of time, such as a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line. It may also include a device that retains a program for a certain period of time, such as a volatile memory inside a computer system that is a server or client in that case. Further, the above-mentioned program may be one for realizing a part of the above-mentioned functions, or may be one that can realize the above-mentioned functions in combination with a program already recorded in the computer system. It may be realized using a programmable logic device such as an FPGA (Field Programmable Gate Array).

Although the embodiments of the present invention have been described above in detail with reference to the drawings, the specific configuration is not limited to these embodiments, and includes designs within the scope of the gist of the present invention.

1, 1A...Sleep state determination system 10, 10A...Sleep state determination device 101...Measurement result acquisition section 102...State judgment section 103...Judgment threshold storage section 104...Alarm notification section 105...Output section 106...Biological information storage section 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 (6)

a measurement result acquisition unit that acquires biological information of each user in the facility;
Based on the biological information acquired by the measurement result acquisition unit, the sleep state of each of the users, whether each of the users is out of bed or in bed, and if in bed, a state determination unit that determines a sleep state including whether one is awake or has fallen asleep;
an output unit that outputs the sleep state determined by the state determination unit;
an alarm notification unit that issues an alarm notification when it is determined that the sleep state satisfies an alarm notification condition including leaving the bed or being awake for a threshold time or more, based on the sleep state determined by the state determination unit; and,
A sleep state determination device having;
Based on the sleep state of each of the users received from the sleep state determination device, it is determined whether each of the users is out of bed or in bed, and if in bed, whether he is awake. an administrator terminal that displays a list displaying whether or not someone has fallen asleep in a list, and an alarm history that is a history of alarm notifications performed by the alarm notification unit, adjacent to each other;
has
The administrator terminal is a management screen for setting the alarm notification conditions and determination variables for determining the sleep state, and sets an alarm setting time period in which the alarm notification is to be performed. display a management screen including an input field for setting the number of records, and an input field for setting the number of records, and display the alarm setting time period and the number of records input corresponding to the input field for the sleep stored in the storage unit of the state determination device;
The measurement result acquisition unit continuously acquires the biological information for a number of times equal to the number of records for each predetermined time width ,
The alarm notification unit performs the alarm notification during the alarm setting time period stored in the storage unit of the sleep state determination device.
Sleep state determination system. In the alarm history, for each alarm notification, the administrator terminal includes the installation location where the sleep state determination device corresponding to the alarm notification is installed, the event indicating the trigger of the alarm notification, and the information of the alarm notification. Display the time of occurrence,
The sleep state determination system according to claim 1. The measurement result acquisition unit acquires the biological information including information indicating the depth of sleep of the user calculated based on an electrical signal indicating the user's movement,
The output unit outputs the biometric information to the administrator terminal,
The administrator terminal displays, in the list display, the depth of sleep when each of the users falls asleep, based on the biological information of each of the users received from the sleep state determination device.
The sleep state determination system according to claim 1. The sleep state determination device further includes a storage unit that stores a first period, a second period, a third period, and a fourth period, which are determination variables for determining the sleep state,
The biological information includes heart rate and information indicating the presence or absence of body movement,
The state determining unit determines that the patient is in bed when the heart rate in the biological information acquired in the first period is equal to or higher than a threshold value, and determines that the patient is out of bed when it is not determined that the patient is in bed, and determines that the patient is in bed. If the biological information acquired in the second period later indicates that there is a body movement, it is determined that the patient is awake, and if it is not determined that he is awake, it is determined that he has fallen asleep, and in the third period after it is determined that he has fallen asleep. determining that the person is awake when body movement is continuously shown in the biological information acquired in the fourth period of the acquired biological information;
The sleep state determination system according to claim 1. The storage unit stores a fifth period and a sixth period as the determination variables,
The state determination unit further determines whether or not the sleep state involves tossing and turning and whether bed sore treatment is required, and includes body movement in the biological information acquired during the fifth period after it is determined that the sleep state has fallen asleep. If it is determined that the patient has turned over in bed, and if it is determined that the patient has not turned over in bed, then it is determined that bed sore treatment is necessary if all of the biological information acquired in the sixth period after the determination that the patient has fallen asleep indicates no body movement.
The sleep state determination system according to claim 4. The measurement result acquisition unit of the sleep state determination device acquires biological information of each user in the facility,
The state determining unit of the sleep state determining device determines the sleep state of each of the users based on the biological information acquired by the measurement result acquiring unit, and determines whether each of the users has left the bed or entered the bed. If the patient is in bed, determines the sleep state including whether the patient is awake or has fallen asleep.
an output unit of the sleep state determination device outputs the sleep state determined by the state determination unit;
The alarm notification unit of the sleep state determination device determines that the sleep state satisfies an alarm notification condition including leaving the bed or being awake for a threshold time or more, based on the sleep state determined by the state determination unit. An alarm notification will be sent if
The administrator terminal determines whether each of the users is out of bed or in bed, and if the user is in bed, based on the sleep state of each of the users received from the sleep state determination device. displays a list displaying whether the user is awake or asleep, and an alarm history which is a history of the alarm notifications performed by the alarm notification unit, adjacent to each other;
The administrator terminal is a management screen for setting the alarm notification conditions and determination variables for determining the sleep state, and sets an alarm setting time period in which the alarm notification is to be performed. display a management screen including an input field for setting the number of records, and an input field for setting the number of records, and display the alarm setting time period and the number of records input corresponding to the input field for the sleep stored in the storage unit of the state determination device;
The measurement result acquisition unit continuously acquires the biological information for a number of times equal to the number of records for each predetermined time width ,
The alarm notification unit performs the alarm notification during the alarm setting time period stored in the storage unit of the sleep state determination device.
Method for determining sleep state.

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