JP4598581B2 - Sleep diary creation support device - Google Patents

Description

  The present invention relates to a sleep diary creation support apparatus that automatically records information necessary for creating a sleep diary over a certain period based on the result of detecting the body movement of a person at bedtime.

  In order to maintain health, it is indispensable to ensure good quality and proper sleep. In order to evaluate the sleep state, it is necessary to know the sleep state such as sleep time from bedtime to waking up and the depth of sleep, etc., and daily life to avoid the health risks of those who are troubled or dissatisfied with sleep As a means that can be recorded by an individual, a sleep diary that records the bedtime and wake-up time and the distinction between a stagnation state and a stable sleep state over a certain period is used.

  However, the sleeper himself cannot measure the depth of sleep accurately, and the sleeper himself needs a strong continuation intention to keep track of the daily bedtime and wake-up time. It is difficult to create an accurate sleep diary.

  For this reason, it is conceivable to automatically detect the sleeping time and sleeping state of a sleeping person, but it is possible to install a device on the human body contact part of a bed or other bedding or to attach a detection device to the sleeping person. Then, there is a possibility that the natural sleep of the sleeping person may be disturbed, and the daily sleeping time and sleeping state of the sleeping person cannot be recorded. For example, the depth of sleep during sleep can be accurately measured by measuring the brain wave of the sleeper, but the measurement of the brain wave requires that the sleeper be fitted with a measuring instrument by means of specialized techniques. In principle, it is impossible to measure a brain wave of a sleeping person without contact and restraint.

  Therefore, whether or not there is a sleeping person in bed using a pyroelectric infrared sensor and a thermopile that detects infrared rays emitted from the head of a sleeping human body as a non-contact and non-restraining device for detecting a sleeping state (For example, refer to Patent Document 1).

There has also been proposed a device that includes a body motion detection sensor such as a pyroelectric infrared sensor, detects body motion information of a sleeping person during sleep, and records and displays this information (for example, Patent Documents). 2).
JP-A-10-005180 JP 2002-315738 A

  However, the apparatus disclosed in Patent Document 1 may be able to detect the presence or absence of a sleeping person in a sleeping position such as in a bed, but detects whether a sleeping person is sleeping or awake. I can't do it. Therefore, in the apparatus described in Patent Document 1, the sleeping state during sleeping cannot be measured, and the sleep diary cannot be automatically created.

  Further, in the apparatus disclosed in Patent Document 2, although the body motion information of the sleeping person can be detected by the body motion detection sensor, the sleep state can be automatically determined using the detected body motion information. It is not possible to create a sleep diary automatically.

  That is, even if the sleeping person is in the sleeping state lying in the sleeping position, the sleeping person is not necessarily sleeping, but may be awakened although lying. Usually, a sleeper who is sleeping is accompanied by body movements when awakening, but body movements such as turning over appear even during sleep. Moreover, there may be a case where the user wakes up after waking up after going into a sleep state, and body motion also appears in such a sleeping person.

  Therefore, the presence or absence of body motion information during sleep does not necessarily match whether or not the patient is sleeping, and the body motion information cannot be used as it is for the determination of the sleep state, so the sleep state based on the detected body motion information In the device disclosed in Patent Document 2 that does not include a means for determining the sleep status, it is not possible to obtain a sleep state during sleep as information necessary for creating a sleep diary.

  The present invention has been made paying attention to the fact that the content of body movement information varies depending on the sleep state of the sleeper, and its purpose is to detect the sleeper who is detected in a non-contact and unconstrained manner for the sleeper. Based on body movement information, it is possible to determine the sleep state of a sleeper with the accuracy necessary for creating a sleep diary, and to obtain information for creating a sleep diary with high accuracy without disturbing the sleeper's natural sleep An object of the present invention is to provide a sleep diary creation support device that can do this.

  The sleep diary creation support apparatus according to the present invention has the following configuration as means for solving the above-described problems.

(1) A difference value is calculated for each of a body motion detection sensor that detects the body motion of the sleeping person at the sleeping position and a detection signal for each minute minute period of the body motion detecting sensor from the sleeping time of the sleeping person to the rising time. Difference calculating means, a zero cross counting means for generating time series data by counting the number of times the calculation result of the difference calculating means cuts a preset threshold every predetermined time interval, and a time series created by the zero cross counting means The sleep state determination means for comparing the data with a single or a plurality of reference values corresponding to different sleep states and determining the sleep state for each predetermined time interval, and the determination results of the sleep state determination means are stored cumulatively Storage means, and output means for outputting the storage contents of the storage means.

  In this configuration, the number of times that the difference value of the body motion information detected from the sleeping person crosses the threshold is counted every predetermined time interval, and consists of a plurality of count values arranged in time series from the time of going to bed to the time of getting up. Time series data is created. Each of the plurality of count values constituting the time series data is compared with a single or a plurality of reference values set in advance according to the sleep state, and the comparison results are accumulated. Therefore, the count result of the number of times that a relatively large body movement was measured for each predetermined time interval measured without contact and without restraint is compared with the reference value, and the number of times that a relatively large body movement was generated for each predetermined time interval is calculated. Depending on the degree, the sleep state is continuously determined from the time of going to bed to the time of getting up.

(2) In the configuration of (1), the computer further includes a sleeping state detection unit that detects a sleeping state and a wake-up state of the sleeping person, and the storage unit wakes up when the sleeping state detection unit detects the sleeping state of the sleeping person. The determination result of the sleep state determination means until it is detected is cumulatively stored.

  In this configuration, based on the sleep state and the wake-up state of the sleeper detected by the sleep state detection unit, the determination result of the sleep state between the sleep time and the wake-up time of the sleeper is accumulated. Therefore, a sleep diary in which the sleep state of the sleeping person from bedtime to waking up is recorded is created.

(3) In the configuration of the above (2), the sleeping state detecting means is a body temperature detecting means for detecting a temperature change at the sleeping position.

  In this configuration, the sleeping state and the rising state of the sleeping person are automatically detected based on the temperature change at the sleeping position. Therefore, a sleep diary in which the sleep state of the sleeper from the time of going to bed to the time of getting up is recorded automatically without recording the bedtime and the time of getting up.

(4) In the configuration of (2), the sleeping state detecting means is an operation member that receives an input operation at the time of sleeping and when waking up.

  In this configuration, the sleeping state and the rising state of the sleeping person are detected based on the sleeping person's input operation. Therefore, based on the input operation as the sleep behavior of the sleeper himself, a sleep diary recording the sleep state from the sleeper's sleeping time to waking up is created.

(5) In any one of the constitutions (1) to (4), the body motion detecting means is a pyroelectric infrared sensor that detects infrared rays emitted from a sleeping person, and air in the sleeping place where the sleeping position is arranged. Air temperature detecting means for detecting the temperature of the air and temperature correcting means for correcting the time-series data created by the zero cross counting means based on the detection result of the air temperature detecting means.

  In this configuration, the pyroelectric infrared sensor detects the infrared rays emitted from the sleeping person as body movement information, and the time-series data created based on the detection result is corrected by the temperature of the air at the sleeping place. Therefore, when detecting infrared rays emitted from a sleeper in a non-contact and unconstrained state, the temperature change of the air affects the detection result as noise, but the air as noise is detected from the detection result of the pyroelectric infrared sensor. Temperature change is eliminated.

(6) In the configuration of (3) above, air temperature detection means for detecting the temperature of the air in the sleeping place where the sleeping position is arranged, and detection of the body temperature detection means based on the detection result of the air temperature detection means And correction means for correcting the result.

  In this configuration, the sleeping state and the wake-up state detected by the body temperature detection unit based on the body temperature of the sleeping person are corrected by the temperature of the air at the sleeping place. Therefore, when detecting infrared rays emitted from a sleeping person in a non-contact and unconstrained state, the temperature change of the air affects the detection result as noise, but the temperature of the air as noise is detected from the detection result of the body temperature detection means. Change is removed.

  According to the sleep diary creation support device of the present invention, the result of counting the number of occurrences of relatively large body movements for each predetermined time interval measured in a non-contact and unconstrained manner is compared with a reference value, and is compared at every predetermined time interval. It is possible to continuously determine the sleep state according to the number of times that a large body movement has occurred and to record this automatically. As a result, information necessary for creating the sleep diary can be obtained with high accuracy without interfering with the natural sleep of the sleeper, which can contribute to the creation of an accurate sleep diary.

  FIG. 1 is a side view of a sleep diary creation device 1 to which a sleep diary creation support device according to the first embodiment of the present invention is applied. The sleep diary creation device 1 includes a detection surface 3 formed of a translucent member in a part of the housing 2. A pyroelectric infrared sensor 4 and a thermopile 5 which are body motion detection sensors of the present invention are housed inside the housing 2 so as to face the detection surface 3. The pyroelectric infrared sensor 4 is a body motion detection sensor of the present invention. The thermopile 5 is a sleeping state detecting means of the present invention.

  On the side of the sleep diary creation device 1, a lid 6 is disposed so as to be freely opened and closed. When the lid 6 is opened, the jack 7 arranged inside the housing 2 is exposed to the outside. For example, a plug of a portable recording medium such as a USB memory is connected to the jack 7.

  A display 8 and an output switch 9 are arranged on the front surface of the housing 2. The display 8 displays a sleep diary described later in accordance with the operation of the output switch 9. The display 8 can be selectively arranged with the jack 7. When the output switch 9 is operated with the portable recording medium connected to the jack 7, the display data of the sleep diary is written to the portable recording medium, and the portable recording medium in which the display data of the sleep diary is written If the display is made on the monitor of the personal computer by connecting to the jack of the personal computer not shown, it is not necessary to provide the display 8 and the switch 9. If the sleep diary is displayed only on the display 8, the jack 7 need not be provided.

  If the printer 10 is arranged inside the housing 2 and the sleep diary is printed out only from the printer 10 when the output switch 9 is operated, the jack 7 and the display 8 need not be provided. However, the printer 10 can be provided together with the jack 7 and the display 8. These jack 7, display 8, and printer 10 correspond to the output means of the present invention.

  A slit 11 is formed in the upper part of the front surface of the housing 2. A room temperature sensor 12 is disposed at a position facing the slit 11 inside the housing 2. The room temperature sensor 12 is the air temperature detection means of this invention.

  FIG. 2 is a diagram illustrating a usage state of the sleep diary creation device 1. The sleep diary creation device 1 is attached to a wall surface 31 of a sleeping place 30 such as a bedroom where a sleeping position 20 such as a bed is arranged. The sleep diary creation device 1 may be attached to a ceiling surface (not shown) of the sleeping place 30. The sleep diary creation device 1 can also be detachably attached to the wall surface 31 or the like in consideration of the case where the arrangement position of the sleeping position 20 in the sleeping place 30 or the sleeping place 30 itself is changed.

  The pyroelectric infrared sensor 4 of the sleep diary creation device 1 detects infrared rays generated from the portion 21 where the pillow is placed at the sleeping position 20 via the detection surface 3. The thermopile 5 of the sleep diary creation device 1 detects heat in the portion 21 where the pillow is placed at the sleeping position 20 via the detection surface 3. The room temperature sensor 12 of the sleep diary creation device 1 detects the temperature of the air in the sleeping place 30 through the slit 11.

  FIG. 3 is a block diagram showing the configuration of the sleep diary creation device 1 according to the first embodiment of the present invention. The sleep diary creation device 1 is configured by connecting a ROM 41, a RAM 42, a display controller 43, a printer driver 44, A / D converters 45 to 47, a jack 7 and a switch 9 to a CPU 40. The CPU 40 performs a processing operation based on a program and data previously written in the ROM 41, and writes data input / output during this time to the RAM 42. The RAM 42 is a storage means of the present invention.

  The display controller 43 displays the display data of the sleep diary supplied from the CPU 40 on the display 8. The printer driver 44 drives the printer 10 based on the sleep log print data supplied from the CPU 40. Each of the A / D converters 45 to 47 converts detection signals from the pyroelectric infrared sensor 4, the thermopile 5, and the room temperature sensor 12 into digital data and inputs the digital data to the CPU 40.

  Inside the CPU 40 are a difference calculation means 51, a zero cross counting means 52, a temperature correction means 53, a calculation processing means 54, a sleep state determination means 55, a correction means 56, a sleeping state detection means 57, a correction value creation means 58 and a sleep diary. Creation means 59 is provided.

  The difference calculation means 51 calculates the difference between the detection data of the pyroelectric infrared sensor 4 input from the A / D converter 45 at a sampling interval of 25 msec, for example, and the detection data input last time, and changes amount data. Output as. For example, the zero-crossing counting unit 52 counts the number of times the change amount data output from the difference calculation unit 51 exceeds a preset threshold value at a predetermined time interval of 20 sec, and arranges a plurality of count values in time series. Output as series data.

  Therefore, this time series data is a time series of the number of times the detection data of the pyroelectric infrared sensor 4 has changed relatively greatly at predetermined time intervals, and the detection data of the pyroelectric infrared sensor 4 is in bedtime. The number of times the body motion of the bedridden relatively large at every predetermined time interval is arranged in time series because it varies depending on the amount of change in the body motion of the person.

  The threshold value used in the zero-crossing counting means 52 is to improve the accuracy of the pyroelectric infrared sensor 4 in order to eliminate fluctuations in the detection data of the pyroelectric infrared sensor 4 due to other than the sleeper's body movement such as external vibration. It can be determined experimentally in consideration.

  The correction value creation unit 58 creates correction data based on the detection data of the room temperature sensor 12 input from the A / D converter 46 and supplies the correction data to the temperature correction unit 53 and the correction unit 56.

  The temperature correction unit 53 corrects the time series data output from the zero cross counting unit 52 based on the correction data supplied from the correction value generation unit 58. The pyroelectric infrared sensor 4 detects infrared rays emitted from a sleeping person in a non-contact and unrestrained state. For this reason, the detection signal of the pyroelectric infrared sensor 4 is affected by the air temperature between the pyroelectric infrared sensor 4 and the sleeping person, and a change in the room temperature of the sleeping place 30 is detected by the pyroelectric infrared sensor 4. It can appear as noise in the signal. Therefore, the temperature correction unit 53 excludes the time series data output from the zero-crossing counting unit 52 due to a change in room temperature, and corrects the time series data to represent only the number of relatively large body movements of the sleeping person.

  The arithmetic processing means 54 performs statistical arithmetic processing on the time-series data that has been corrected by the temperature correction means 53. This calculation process is, for example, a weighted moving average process, and a seven-point weighted moving average process is performed as an example. By performing this processing, rapid fluctuations in time-series data are suppressed, and the reliability as data is improved.

  The sleep state determination unit 55 compares the time series data subjected to the calculation process by the calculation processing unit 54 with a reference value set in advance, and determines the sleep state. For example, a single reference value is used when distinguishing between awake and asleep during sleep, and multiple criteria when distinguishing the depth of sleep during sleep. A value is required. These single or plural reference values can be experimentally determined by taking into consideration the accuracy of the pyroelectric infrared sensor 4 and comparing with the detection data of the electroencephalogram or the like.

  For example, from the detection data of the electroencephalogram, a relatively large number of body movements at a predetermined time interval when it is determined that the person is awake, and at a predetermined time interval when it is determined that the person is sleeping With a relatively large number of body movements, and using the number between the two as a reference value, in a state of awakening or sleeping from a relatively large number of body movements for each predetermined time interval It is determined whether there is any.

  In addition, when there is a relatively large difference in the number of body movements in each of the deep and shallow levels of sleep, the number of times between the number of body movements for each level is set as a plurality of reference values, so that a predetermined time interval The level of the depth of sleep in the state of sleeping is determined from the relatively large number of body movements.

  As a result, for example, if the number of times that the sleeper repeatedly performed relatively large body movements is greater than the reference value, it is determined that the person is awake, and if the number is less than the reference value, the sleeping state is determined. It is determined that The sleep state determination unit 55 sequentially outputs determination data for each predetermined time interval to the sleep diary creation unit 59.

  The correcting unit 56 corrects the detection data of the thermopile 5 input from the A / D converter 47 based on the correction data supplied from the correction value creating unit 58. Since the thermopile 5 also measures the body temperature of the sleeping person in a non-contact and unrestrained state, the detection data of the thermopile 5 is influenced by the air temperature between the thermopile 5 and the sleeping person, and the room temperature of the sleeping place 30 varies. There is a possibility of appearing as noise in the detection signal of the thermopile 5. Therefore, the correction means 56 excludes detection data input from the A / D converter 47 due to changes in room temperature and corrects only the body temperature of the sleeping person into data.

  The sleeping state detecting unit 57 compares the detection data corrected by the correcting unit 56 with a predetermined comparison value, and generates a sleeping diary of sleeping state data and wake-up state data, which are the results of determining the presence or absence of a sleeping person at the sleeping position 20. Supply to means 59.

  The sleep diary creation means 59 is supplied with time information from a clock circuit (not shown). The sleep diary creation means 59 determines every predetermined time interval input from the sleep state determination means 55 from when the sleep state data is input from the sleep state detection means 57 to when the wake-up state data is input. One day of sleep diary data in which data is cumulatively recorded along the time axis based on time information is created and stored in the RAM. The RAM 42 sequentially stores sleep diary data for a plurality of days.

  When the output switch 9 is operated, the CPU 40 reads, for example, one month's sleep diary data stored in the RAM 42 and creates display data, file data, or print data of the sleep diary 61 shown in FIG. 4 as an example. Then, they are supplied to the display controller 43, the jack 7 or the printer driver 44, respectively.

  As described above, the sleep diary creation device 1 easily and accurately determines the sleep state of the sleeper based on the number of relatively large body movements of the sleeper at a predetermined time interval, and automatically creates the sleep diary. be able to. The body movement of the sleeping person is detected in a non-contact and unrestrained state by the pyroelectric infrared sensor 4, and thus does not disturb the sleeping person's natural sleep.

  FIG. 5 is a block diagram showing a configuration of a sleep diary creation device 1 ′ to which a sleep diary creation support device according to the second embodiment of the present invention is applied. The sleep diary creation device 1 ′ includes an input switch 60 instead of the thermopile 5, the A / D converter 47, the temperature correction means 56 and the sleeping state detection means 57 in the sleep diary creation device 1 shown in FIG. 3. The other configuration is the same as that of the sleep diary creation device 1. The input switch 60 is an operation member of the present invention.

  The input switch 60 accepts an input operation of the sleeping state and the rising state at the time of going to bed and at the time of waking up by the sleeping person. The sleeping person operates the input switch 60 at the time of sleeping to input the start timing of the sleeping state, and operates the input switch 60 at the time of waking up to input the end timing of the sleeping state. The sleep diary creation means 59 uses the determination data for each predetermined time interval input from the sleep state determination means 55 as the time axis based on the time information during the period from the start timing to the end timing of the sleeping state by the operation of the input switch 60. A sleep diary that is cumulatively recorded along is created and written into the RAM.

  Thus, by providing the input switch 60, it becomes habitual for the sleeper to operate the switch as the sleep behavior, which helps the sleeper to form a stable sleep habit.

  In the sleep diary creation devices 1 and 1 ′, when the influence of noise in the time series data can be sufficiently removed by the accuracy of the pyroelectric infrared sensor 4 and the selection of the threshold value in the zero cross counting means 52, The room temperature sensor 12, the A / D converter 46, the temperature correction means 53, the correction means 56, and the correction value calculation means 58 can be omitted.

  Further, the structure of the sleep diary need not necessarily indicate the determination result of the sleep state as shown in FIG. 4, and the output of the arithmetic processing means 54 used for the evaluation and analysis of the body movement amount is recorded in time series. It may be the body movement frequency data.

  Further, when the output of the zero-crossing counting unit 52 or the output of the temperature noise correcting unit 53 has sufficient reliability, the arithmetic processing unit 54 can be omitted.

It is a side view of the sleep diary creation device 1 to which the sleep diary creation support device according to the first embodiment of the present invention is applied. It is a figure which shows an example of the use condition of the said sleep diary creation apparatus. It is a block diagram which shows the structure of the said sleep diary preparation apparatus. It is a figure which shows an example of the sleep diary created with the said sleep diary creation apparatus. It is a block diagram which shows the structure of the sleep diary creation apparatus 1 'to which the sleep diary creation assistance apparatus which concerns on 2nd Embodiment of this invention is applied.

Explanation of symbols

1 Sleep diary creation device 4 Pyroelectric infrared sensor (body motion detection sensor)
5 Thermopile (body temperature detection means)
7 Jack (output means)
8 Display (output means)
10 Printer (output means)
12 Room temperature sensor (Air temperature detection means)
51 Difference calculation means 52 Zero cross counting means 53 Temperature correction means 55 Sleep state determination means 56 Correction means 57 Sleep state detection means 59 Sleep diary creation means 60 Input switch (operation member)

Claims (5)

The difference which calculates a difference value about each of the body movement detection sensor which detects the body movement of a sleeping person in a sleeping position, and the detection signal for every fixed minute time of the body movement detection sensor from the bedtime of a sleeping person to the time of getting up A calculation means, a zero cross counting means for generating time-series data by counting the number of times the calculation result of the difference calculation means cuts a preset threshold value every predetermined time interval, and the time created by the zero cross counting means The sleep state determination means for comparing the series data with a single or a plurality of reference values each corresponding to a different sleep state to determine the sleep state for each predetermined time interval, and the determination result of the sleep state determination means is cumulative Storage means for storing the data, and output means for outputting the storage contents of the storage means ,
Sleeping state detection means for detecting a sleeping state and a wake-up state of a sleeping person is further provided, and the storage means sleeps from when the sleeping state detection means detects the sleeping state of the sleeping person until the rising state is detected. A sleep diary creation support apparatus, characterized in that the determination results of the state determination means are accumulated . The sleep diary creation support apparatus according to claim 1 , wherein the sleeping state detecting means is a body temperature detecting means for detecting a temperature change at a sleeping position. The sleep diary creation support apparatus according to claim 1 , wherein the sleeping state detection unit is an operation member that receives an input operation when sleeping and when getting up. The body movement detecting means is a pyroelectric infrared sensor that detects infrared rays emitted from a sleeping person, and includes an air temperature detecting means for detecting an air temperature at a sleeping place where the sleeping position is arranged, and the air temperature detecting means. The sleep diary creation support apparatus according to any one of claims 1 to 3 , further comprising a temperature correction unit that corrects the time-series data generated by the zero-crossing counting unit based on the detection result of . Air temperature detection means for detecting the temperature of the air in the sleeping place where the sleeping position is arranged, and correction means for correcting the detection result of the body temperature detection means based on the detection result of the air temperature detection means. The sleep diary creation support apparatus according to claim 2 , wherein:

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