JP2017158761A - Apparatus and method for blood pressure measurement, and apparatus and method for sleeping state measurement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a blood pressure measuring apparatus capable of highly accurately calculating a nighttime blood pressure, a daytime blood pressure, and a nighttime blood pressure decrease ratio by accurately detecting a bed time and a wake time without applying any load to a user.SOLUTION: The blood pressure measuring apparatus includes: a posture meter 10 that is worn on a user's body for measuring the posture at prescribed intervals; a sphygmomanometer 20 that is worn on the user's body for measuring the blood pressure at prescribed intervals; a bed time/wake time calculation part 42 acquiring posture information from the posture meter 10 to determine the user's bed time and wake time; and a blood pressure calculation part 44 for calculating a nighttime blood pressure, a daytime blood pressure, and a nighttime blood pressure decrease ratio on the basis of blood pressure information of the sphygmomanometer 20 and information of the bed time and the wake time.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a blood pressure measurement device, a blood pressure measurement method, a sleep state measurement device, and a sleep state measurement method. More specifically, the present invention relates to a blood pressure measurement device, a blood pressure measurement method, a sleep state measurement device, and a sleep state measurement method that accurately measure a blood pressure or a sleep state by measuring a body posture and accurately determining a bedtime and a bedtime. .

  It has been known that blood pressure changes depending on body position. Therefore, a blood pressure measuring apparatus and method are known in which a posture of a subject is predicted using an inclination sensor so that the subject measures blood pressure in a correct posture (see, for example, Patent Document 1).

  For sleep state measurement, there is known a sleep determination device that provides a load sensor on a bed so as not to harm sleep, determines body movement from the load sensor, and determines the sleep state from the state of turning over. (For example, refer to Patent Document 2).

  In addition, a sleep state evaluation device having a measurement unit that measures physical quantity data including acceleration and a sleep state determination unit that determines a sleep state from the user's rollover state is attached to the user's wrist to evaluate the sleep state (See, for example, Patent Document 3).

JP 2010-046494 A JP 2013-198666 A JP2015-159850A

  By the way, the thing of patent document 1 makes a posture correction | amendment only in order to perform a highly accurate blood pressure measurement, and since it is a single measurement, it is a nocturnal blood pressure and a daytime blood pressure for using for the treatment of a hypertensive patient. Unable to measure the rate of blood pressure drop at night. In order to measure these, it is necessary to measure the correct bed entry time and bed departure time, and to capture changes in blood pressure over time.

  Moreover, in patent document 2, it is necessary to always sleep on the fixed bed, and if other than a test subject gets on a bed, it will cause a misjudgment.

  Although it is necessary to accurately determine the bedtime and bedtime for the treatment of sleep disorder (insomnia) patients, in Patent Documents 2 and 3, the bedtime state is determined, but the bedtime and bedtime are determined. It is not disclosed that the time is accurately obtained, and data useful for the treatment of a sleep disorder patient cannot be acquired.

  As mentioned above, the analysis of nighttime blood pressure and sleep quality requires accurate information on bedtime and bedtime, and the current situation depends on the sleep diary recorded by the device user, so the user who records it In addition to the heavy burden of the elderly, the accuracy of the records is not guaranteed in elderly people with cognitive decline.

  Therefore, the present invention solves the above-described problems, and in the blood pressure measurement device, the measurement method thereof, and the sleep state measurement device, and the measurement method thereof, the bed entry time and bed departure time are accurately determined without imposing a burden on the user. Measuring device and measuring method capable of accurately determining nighttime blood pressure / daytime blood pressure / nighttime blood pressure drop rate, sleep latency, sleep efficiency, mid-wake time, and total sleep time without burden on the user The purpose is to provide.

In order to solve the above problems, the invention of claim 1 is a posture meter that can be worn on the user's body and measures the user's posture at predetermined intervals.
A sphygmomanometer that can be worn on the user's body and measures the blood pressure of the user at predetermined intervals;
An entrance / exit time calculating unit that obtains the postural information from the posture meter and determines the entrance time and the exit time of the user; and
Blood pressure measurement comprising blood pressure information from the sphygmomanometer and blood pressure calculation unit for calculating a nighttime blood pressure / daytime blood pressure / nighttime blood pressure decrease rate from the information on the bedtime and bedtime of the bedtime / bedtime calculation unit Device.

  As the posture meter in the present invention, for example, an acceleration sensor of a type that detects acceleration is conceivable. In that case, the detection direction may be an acceleration sensor that detects acceleration in the direction of one axis or two axes among the three-dimensional directions of the x, y, and z axes, but body position determination based on acceleration by the three axis acceleration sensor is preferable, According to a second aspect of the present invention, in the blood pressure measurement device according to the first aspect of the present invention, a configuration is adopted in which the posture meter uses a three-axis acceleration sensor.

  The sphygmomanometer according to the present invention is not particularly limited, and may be a cuff type sphygmomanometer that has been used in the past. However, a cuff type wristwatch type that can be worn for 24 hours and does not place a burden on the user. The use of a behavioral sphygmomanometer (ABPM) is preferred.

The calculation formula for deriving the nighttime blood pressure / daytime blood pressure / nighttime blood pressure reduction ratio in the present invention is as follows.
The nighttime blood pressure is obtained by an average value (mmHg) of [blood pressure value] between [bed time] and [bed time].
The daytime blood pressure is obtained as an average value (mmHg) of [blood pressure value] from [leaving time] to [bed time].
The nighttime blood pressure decrease rate is obtained by ([average value of daytime blood pressure] − [average value of nighttime blood pressure]) / [average value of daytime blood pressure].

  According to a third aspect of the present invention, in the blood pressure measurement device according to the first or second aspect, a body temperature sensor for measuring a user's body temperature at a predetermined interval is attached to the body posture meter, and body temperature information from the body temperature sensor is a predetermined temperature. A configuration is adopted in which the judgment of entering and leaving times is not performed for the following time zones.

  The predetermined temperature in this case is a threshold value for determining whether to remove the posture meter because the posture meter is warmed by the body temperature if it is attached to the human body and the temperature of the posture meter lowers when it is removed from the human body. It is set around 30 ° C.

The invention of claim 4 is a posture meter that can be worn on the user's body and measures the user's posture at predetermined intervals;
An actigraph sleep meter that can be worn on the user's body and measures the user's activity at predetermined intervals;
An entrance / exit time calculating unit that obtains the postural information from the posture meter and determines the entrance time and the exit time of the user; and
Determine the user's awakening or sleep from the information of the actigraph sleep meter, and together with the information on the bedtime and bedtime of the bedtime and bedtime calculator, the sleep latency, sleep efficiency, mid-waketime, It is a sleep state measuring device which consists of a sleep calculation part which calculates total sleep time.

  An actigraph sleep meter is a wristwatch-type acceleration sensor that estimates the amount of physical activity. When the amount of physical activity falls below a threshold, it is defined as a sleep state. Sleep parameters such as awakening time after sleep can be estimated, and it correlates well with the polysomnograph that measures direct brain waves used in conventional sleep state measurement, and its validity has been proved. And even if compared with the use of polysomnograph, it is a small one that does not place a burden on the user, it can be worn on the body at all times with a bracelet type and can automatically measure the user's sleep state at predetermined intervals. is there.

Using the information on [Awakening State] and [Sleep State] calculated based on the [Arrival / Leaving Time] obtained by the entering / leaving time calculation unit and the amount of physical activity measured by the Actigraph Sleep Meter The calculation formula for deriving the sleep latency, sleep efficiency, mid-wake time, and total sleep time is as follows.
The sleep onset latency is obtained by [the bedtime]-[sleeping time] (minutes) ([sleeping time] is the time when the sleep state obtained from the actigraph sleep meter is entered).
The sleep efficiency is obtained by [sleeping time] / ([bed-in time]-[bed-out time]) (%) ([sleeping time] is an actual sleep time obtained from an actigraph sleep meter).
The mid-wake time is obtained by [Wake-up time] / ([Sleep time]-[Leave time]) (minutes) ([Wake-up time] is the actual awake time obtained from the actigraph sleep meter).
The total sleep time is obtained by ([sleeping time] / ([bed-in time]-[bed-out time])) × ([bed-in time]-[bed-out time]) (minutes).

  According to a fifth aspect of the present invention, in the sleep state measuring apparatus according to the fourth aspect of the present invention, the posture meter uses a three-axis acceleration sensor.

  According to a sixth aspect of the present invention, in the sleep state measuring apparatus according to the fourth or fifth aspect, a body temperature sensor for measuring a user's body temperature at predetermined intervals is attached to the body posture meter, and body temperature information from the body temperature sensor is predetermined. It is characterized by not judging the time of getting in and out of the time zone below the temperature.

The invention of claim 7 is a step of continuously measuring the blood pressure of the user at a predetermined interval with a sphygmomanometer attached to the body of the user;
A step of continuously measuring the posture of the user at a predetermined interval with a posture meter attached to the body of the user;
Calculating the user's bed entry time and bed departure time from the body posture information from the body posture meter;
A blood pressure measurement method comprising a step of calculating a nighttime blood pressure, a daytime blood pressure, and a nighttime blood pressure lowering rate from the blood pressure information from the blood pressure monitor and the calculated information of bedtime and bedtime.

  According to an eighth aspect of the present invention, in the blood pressure measurement method according to the seventh aspect, in the step of calculating the bed entry time and the bed leaving time, the z-axis direction (the user is standing up) among the three-axis accelerations measured by the position meter The first time in the time zone in which the acceleration in the height direction) does not exceed the threshold set in the range of 0.4G to 0.6G within the predetermined time set in the range of 30 minutes to 3 hours. A configuration is adopted in which the time at which the acceleration after the entrance time and the acceleration after the entrance time exceed a threshold is determined as the exit time.

  From the empirical rule that the acceleration in the z-axis direction (the height direction when the user is standing) among the three-axis accelerations is 0.4G- It is possible to determine the time of entry when the threshold set in the range of 0.6 G (more preferably 0.4 G) does not exceed the predetermined time (more preferably 1 hour) set in the range of 30 minutes to 3 hours. .

  According to a ninth aspect of the present invention, in the blood pressure measurement method according to the seventh or eighth aspect, in the step of calculating the bed entry time and the bed leaving time, a body temperature sensor is attached to the body posture meter, and temperature information from the body temperature sensor is predetermined. For a time zone below the temperature, a configuration is adopted in which the entry / exit times are not determined from the information on the body posture meter.

The invention of claim 10 is a step of continuously measuring the amount of activity of the user at a predetermined interval with an actigraph sleep meter attached to the user's body;
A step of continuously measuring the posture of the user at a predetermined interval with a posture meter attached to the body of the user;
Calculating the user's bed entry time and bed departure time from the body posture information from the body posture meter;
Sleeping latency, sleep efficiency, midway awakening time, total sleep time based on information on user awakening / sleep state obtained from activity amount information from the actigraph sleep meter and information on the calculated bedtime and bedtime It is the sleep state measuring method which consists of the process of calculating.

  In the eleventh aspect of the invention, in the sleep state measuring method according to the tenth aspect, in the step of calculating the bedtime and the bedtime, the z-axis direction (the user stands up) among the three-axis accelerations measured by the posture meter. The first time in the time zone in which the acceleration in the height direction) does not exceed the threshold set in the range of 0.4G to 0.6G within the predetermined time set in the range of 30 minutes to 3 hours Is adopted, and the time when the acceleration after the time of entering the floor exceeds the threshold is determined as the bed leaving time.

  According to a twelfth aspect of the present invention, in the sleep state measuring method according to the tenth or eleventh aspect, in the step of calculating the bedtime and the bedtime, a body temperature sensor is attached to the body posture meter, and temperature information from the body temperature sensor is obtained. For a time zone below a predetermined temperature, a configuration is adopted in which the entry / exit times are not determined from the information on the posture meter.

  As described above, according to the present invention, the posture is automatically determined by detecting and evaluating the acceleration of the posture sensor attached to the user, and the entrance time and the exit time are accurately determined without burden on the user. Therefore, it is possible to accurately measure the nighttime blood pressure, the daytime blood pressure, and the nighttime blood pressure decrease rate in blood pressure measurement.

  Similarly, since the bed entry time and the bed departure time can be accurately measured without any burden on the user, the sleep onset latency, sleep efficiency, mid-wake time, and total sleep time can be accurately measured.

  Compared to the method of letting the subject or user enter the entry and exit times, the automatic calculation of entry and exit times alleviates the burden on the user, especially in elderly people with reduced cognitive functions. Significantly improves the accuracy of blood pressure and sleep analysis by using lower blood pressure monitor and actigraph sleep meter.

It is a figure which shows the structure of the blood-pressure measuring apparatus of this invention. It is a figure which shows the structure of the sleep state measuring apparatus of this invention. It is a reference photograph which shows an example of a blood pressure meter. It is a reference photograph which shows an example of the wearing state of an actigraph sleep meter. It is a figure which shows an example of the data which computes an entrance / leaving time. It is a figure which shows an example of the data which computes an entrance / leaving time.

  Hereinafter, embodiments of the present invention are divided into (1) a free-acting sphygmomanometer with a body position sensor function and (2) an actigraph sleep meter with a body position sensor function, and based on FIGS. 1 to 6 of the accompanying drawings. explain.

(1) Free-action sphygmomanometer with body position sensor function First, the free-motion sphygmomanometer with body position sensor function is roughly composed of a posture meter 10, a sphygmomanometer 20, and a personal computer 40 as shown in FIG.

  First, the posture monitor 10 is small enough to be attached to a predetermined position of the user's body, and the posture of the user is continuously set at a predetermined interval, for example, an interval arbitrarily set between 10 to 30 minutes for 24 hours or more. The interior is composed of a body position sensor 11, a body temperature sensor 12, a measurement timer 13, and a measurement value storage unit 14.

  The posture sensor 11 is an acceleration triaxial acceleration sensor in the x, y, and z directions, and detects the body posture to which the posture meter 10 is attached by detecting acceleration. There are already known methods for calculating whether the body position is standing, inverted, right-sided, right-sided, left-sided, supine, or prone from the acceleration values in the, y, and z directions.

  The body temperature sensor 12 determines whether or not the posture meter 10 is attached to the user's body by measuring the temperature of the posture meter 10 heated by the user's body temperature. Therefore, if the posture meter 10 is removed from the body and placed, the acceleration of the posture sensor 11 does not occur for a certain period of time. Therefore, the time zone when the temperature drop was taken as the time zone when the posture meter 10 was removed, so as to avoid the judgment of the time of bed entry / leaving during this time zone. This improves the accuracy of time determination. Note that the body temperature sensor 12 may be omitted or stop functioning if it is not necessary depending on the user or the environment.

  The measurement timer 13 performs time management and issues a command to measure acceleration and temperature applied to the body position sensor 11 and the body temperature sensor 12 at a predetermined interval and timing arbitrarily set. Various types of information from the body temperature sensor 12 are stored in the measured value storage unit 14.

  The sphygmomanometer 20 can measure the blood pressure of the user continuously at a predetermined interval for 24 hours or more, and measures the blood pressure without burden on the user under the user's free action. (ABPM), and its external appearance is a wristwatch type as shown in FIG.

  The inside of the sphygmomanometer 20 includes a blood pressure measurement unit 21, a measurement timer 22, and a measurement value storage unit 23, and the blood pressure measurement unit 21 is linked with, for example, the measurement time of the posture meter 10 according to a command from the measurement timer 22. The blood pressure of the user is measured at intervals and timings arbitrarily set between 10 and 30 minutes, and information on the time and blood pressure at that time is stored in the measured value storage unit 23.

  The personal computer 40 receives the measurement value from the measurement value storage unit 14 in the posture meter 10 at an arbitrary time or set time by wire or wireless, or always receives wirelessly, and based on these values, the posture of the user A posture calculation unit 41 for calculating the position, a bed / bed time calculation unit 42 for calculating the user's bed / bed time calculation, and a posture meter wearing time calculation unit 43.

  Furthermore, the measurement value from the measurement value storage unit 23 in the sphygmomanometer 20 is received by wire or wireless at an arbitrary time or set time, or is always received wirelessly, and those values and the entry / leaving time calculation unit 42 are received. The blood pressure calculation unit 44 for calculating the nighttime blood pressure, the daytime blood pressure, and the nighttime blood pressure reduction rate from the values of the bedtime and bedtime obtained in step 3, and the blood pressure display indicating the nighttime blood pressure, the daytime blood pressure, and the nighttime blood pressure reduction rate The unit 45 is configured.

  The personal computer 40 includes information terminals such as smartphones and tablets in addition to so-called desktop and stationary personal computers, and the above-described posture calculation unit 41, entry / exit time calculation unit 42, posture monitor by software. There is no particular limitation as long as it is possible to calculate a value by calculation in the wearing time calculation unit 43 and the blood pressure calculation unit 44 and has a monitor or the like for displaying in the blood pressure display unit 45, and other dedicated terminals having these functions -An apparatus etc. may be sufficient.

(2) Actigraph sleep meter with position sensor function The actigraph sleep meter with position sensor function is roughly divided into a posture meter 10, an actigraph sleep meter 30 (activity meter), and a personal computer 40.

  First, the posture meter 10 is the same as the posture meter 10 of the sphygmomanometer with a posture sensor function, and the components of the posture sensor 11, the body temperature sensor 12, the measurement timer 13, and the measurement value storage unit 14 are also operated. Are the same and will not be described in detail.

  In addition, when the body temperature sensor 12 is removed and placed by the user for bathing or the like, the (1) body position sensor also avoids the determination of sleep / wakefulness during this time period. It is the same as the sphygmomanometer with function and free action.

  The actigraph sleep meter 30 can measure whether the user is awake or sleep continuously for 24 hours or more at a predetermined interval. Conventionally, the awake / sleep state is determined by measuring brain waves. On the other hand, it is compact without burden on the user under the free action of the user, and has the function of judging the arousal / sleep state similar to measuring brain waves, and its appearance is small as shown in FIG. This watch type can be worn on the user's arm.

  The interior of the actigraph sleep meter 30 includes an actigraph 31 for measuring the amount of physical activity, a measurement timer 32, and a measurement value storage unit 33. The actigraph 31 is a user's body at a predetermined interval and timing according to a command from the measurement timer 32. From the amount of activity, it is calculated whether it is an arousal state or a sleep state, and information on the time and sleep state at that time is stored in the measured value storage unit 33.

  The personal computer 40 has a body posture calculating unit 41, a bed / leaving time calculating unit 42, and a body posture wearing time calculating unit 43. These functions are the same as those of the freely-behaved sphygmomanometer with the body position sensor function. Detailed description will be omitted.

  Furthermore, in the personal computer 40 in the actigraph sleep meter with the body position sensor function, the measurement value is received from the measurement value storage unit 33 in the actigraph sleep meter 30 at an arbitrary time or set time by wire or wireless, or always by wireless. A sleep state calculating unit 46 for calculating a sleep onset latency, sleep efficiency, midway awakening time, and total sleep time from the user's awakening / sleeping state based on those values, and a sleep onset latency, sleep efficiency, midway awakening time A sleep state display unit 47 that displays the total sleep time is included.

  Next, (1) the blood pressure measurement method using the freely-moving sphygmomanometer with body position sensor function according to the embodiment is based on FIG. 1, FIG. 3, FIG. 5, and FIG. The sleep state measurement method using a meter will be described with reference to FIGS. 2, 4, 5, and 6.

(1) Free-action sphygmomanometer with position sensor function First, the user is equipped with the sphygmomanometer 10 and the sphygmomanometer 20.
The body posture meter 10 is attached to the trunk, but the body posture sensor 11 uses a three-axis acceleration sensor and is always in the same direction as the body trunk. The ABPM (blood pressure monitor) 20 is a wristwatch type that measures blood pressure from a pulse wave (FIG. 3), and is fitted around the wrist of the user.

  The blood pressure of the user is measured by the blood pressure measurement unit 21 of the sphygmomanometer 20 with reference to the measurement timer 22 at regular intervals (for example, at intervals of 10 to 30 minutes) [STEP 1].

  In the posture meter 10, the posture is measured by the posture sensor 11 in synchronization with the blood pressure measurement with reference to the measurement timer 13 [STEP 2]. At the same time, the body temperature (wearing confirmation) by the body temperature sensor 12 is measured in synchronization with that [STEP 3].

  For the measured data, the value of the blood pressure measurement unit 21 is stored in the measurement value storage unit 23 [STEP 4], and the value of the body position sensor 11 and the value of the body temperature sensor 12 are stored in the measurement value storage unit 14 [STEP 5, 6].

  The posture data stored in the measured value storage unit 14 is sent to the personal computer 40 in a wired or wireless manner at a predetermined interval, at an arbitrary time or at a fixed time, and in the posture calculation unit 41, the standing position, the inverted position, the right side position, the left side Calculate the positions of supine, supine and prone positions. As one of the methods, standing and lying positions are calculated [STEP 7].

  As a calculation method of the standing position and the recumbent position, the acceleration information in the Z-axis direction (the height direction when the user is standing) is detected from the information of the body position sensor 11 which is a three-axis acceleration sensor, The entrance / leaving time calculation unit 42 calculates the entrance / exit time from the obtained standing / elevation data [STEP 8].

In STEP7 and STEP8, examples of data for calculating the bed entry / leaving time are shown in graphs 1, 2, 3 in FIG. 5 and graphs 4, 5, 6 in FIG.
Graph 1 is a value obtained by cutting out the measurement value obtained by the body posture sensor 11 from 20:00 to 12:00 on the next day.
Graph 2 is obtained by extracting the Z-axis necessary for determining standing and lying from Graph 1.

  The threshold for determining the standing position and the recumbent position is approximately 0.4 G to 0.6 G (more preferably 0.4 G). In graph 2, the threshold value is set to 0.4 G, a value smaller than 0.4 G is determined to be “0”, and a larger value is determined to be “1”.

  The decubitus time as a threshold value for determining the time of entering / leaving is empirically about 30 minutes to 3 hours (more preferably 1 hour).

In graph 3, the first time in the time zone in which “0” continues for 1 hour or more is the entry time. The last time is determined as the bed leaving time. This determination method can also determine the time of getting up during sleep or the time of going to the toilet.
For example, the entrance time is 1: 6: 11. Time when I went to the toilet: 6:32:51. Time of re-entry: 6:48:11. Time of getting out of bed: Accurately known as 8:52:51.

  On the other hand, as a method of increasing the reliability of entering and leaving the bed, the wearing time of the posture meter 10 is calculated from the temperature information of the body temperature sensor 12 attached to the posture meter 10 [STEP 9].

  That is, the reliability can be further improved by removing the data of the time when the posture meter 10 is removed, such as during bathing. Specific examples are described below.

  Graph 4 is a measured value of the temperature obtained by the body temperature sensor 12 attached to the posture meter 10 for confirming the wearing of the posture meter 10, and is cut out from 20:00 to 12:00 on the next day. . As a threshold value for determining whether or not the posture meter 10 is removed, an empirically measured temperature by the body temperature sensor 12 is preferably 32 ° C. or less (more preferably 30 ° C. or less). In this embodiment, the measured temperature threshold in graph 4 is 30 ° C., a value smaller than 30 ° C. is determined as “1”, and a larger value is determined as “0”.

  Here, the values of the graph 3 and the graph 5 at the same time are combined, and “1” when either or both are “1”. When both are “0”, it is determined as “0”, and a newly graphed graph is shown in FIG. By using this determination algorithm, even if the posture sensor 11 is removed for more than 1 hour (such as during bathing), it is not erroneously determined that the user has entered the floor.

  From the wearing time of the posture meter 10 obtained in STEP 9, the position sensor wearing time calculation unit 43 determines the time when the posture meter 10 device is not worn, and excludes it from the entering and leaving times obtained in STEP 8. Increase the reliability of the floor / leaving time [STEP 10].

  Nocturnal blood pressure / daytime blood pressure / nocturnal blood pressure reduction using the above-described calculation formulas using the [bed-in / bed-out time] obtained in STEP 8 or STEP 10 and the [blood pressure value] obtained from the sphygmomanometer 20 The ratio is derived, and the blood pressure calculation unit 44 of the personal computer 40 calculates the nighttime blood pressure / daytime blood pressure / nighttime blood pressure reduction ratio [STEP 11], and based on the calculated values, the blood pressure display unit 45 of the personal computer 40 displays the nighttime blood pressure. -The value of the blood pressure reduction ratio during the daytime / nighttime is displayed [STEP 12].

(2) Actigraph sleep meter with position sensor function First, the posture meter 10 and actigraph sleep meter 30 are attached to the user.
In the sleep state measurement method by the actigraph sleep meter with the position sensor function, STEP2, STPE3, STEP5 to STEP10 are the same as the operation of the posture monitor 10 in the freely-behaved sphygmomanometer with the position sensor function. Is omitted.

  The physical activity of the user is measured at regular intervals (for example, 1 minute intervals) with reference to the measurement timer 32 in the actigraph 31 of the actigraph sleep meter 30 [STEP 1], and the measured data is Store in the measured value storage 33 [STEP 4].

  Based on the amount of physical activity obtained from the actigraph 31 of the actigraph sleep meter 30, it is possible to determine whether the user is in a sleep state or in an awake state by a known method.

  Next, the user's [awakening state] and [sleeping state] data obtained from the actigraph sleep meter 30 is sent to the personal computer 40 in a wired or wireless manner at a predetermined interval or arbitrarily or at a fixed time. In 46, the sleep state calculation unit 46 calculates the sleep latency, sleep efficiency, mid-wake time, and total sleep time in accordance with the calculation formula described above together with the bed 8 and bed 10 departure time and bed departure time. [STEP 11] Based on the value, the sleep state display unit 47 of the personal computer 40 displays the values of sleep onset latency, sleep efficiency, mid-wake time, and total sleep time [STEP 12].

  The apparatus and the measurement method shown in the above embodiment are merely examples of the embodiment of the present invention, and can be implemented with appropriate modifications within the scope of achieving the object of the present invention.

  In addition, the user wears the sphygmomanometer 20 and the actigraph sleep meter 30 together with the body posture meter 10, and the personal computer 40 includes a blood pressure calculation unit 44 and a blood pressure display unit 45 together with a sleep state calculation unit 46 and a sleep state display unit 47. Both can be equipped to test the user's blood pressure and sleep simultaneously.

  In addition, it is also conceivable to send various data of the posture meter 10, the sphygmomanometer 20, and the actigraph sleep meter 30 directly to the personal computer 40 without storing them in the logger (without passing through the measured value storage units 14, 23, 33).

  In addition, a personal computer function (calculation function) is incorporated into the sphygmomanometer 20 or the actigraph sleep meter 30 without preparing the personal computer 40 separately, so that the sphygmomanometer 20 or the actigraph sleep meter 30 performs various calculations and displays. In this case, the data stored in the logger of the posture meter 10 attached to the trunk is sent to the sphygmomanometer 20 or the actigraph sleep meter 30 by wire or wirelessly. At that time, it is also conceivable to send the posture data of the posture meter 10 immediately without saving it in the measured value storage unit 14.

DESCRIPTION OF SYMBOLS 10 Position meter 11 Position sensor 12 Body temperature sensor 13, 22, 32 Measurement timer 14, 23, 33 Measurement value storage part 20 Blood pressure meter 21 Blood pressure measurement part 40 Personal computer 41 Position calculation part 42 Entrance / exit time calculation part 43 Position monitor wearing Time calculation unit 44 Blood pressure measurement unit 45 Blood pressure display unit 46 Sleep state calculation unit 47 Sleep state display unit

Claims (12)

A posture meter that can be worn on the user's body and measures the user's posture at predetermined intervals;
A sphygmomanometer that can be worn on the user's body and measures the blood pressure of the user at predetermined intervals;
An entrance / exit time calculating unit that obtains the postural information from the posture meter and determines the entrance time and the exit time of the user; and
The blood pressure information from the sphygmomanometer, and the blood pressure calculation unit for calculating the nighttime blood pressure, the daytime blood pressure, and the nighttime blood pressure decrease rate from the information on the bedtime and bedtime of the bedtime and bedtime calculation unit. A blood pressure measuring device.   The blood pressure measuring device according to claim 1, wherein the body posture meter uses a three-axis acceleration sensor.   A body temperature sensor that measures the user's body temperature at predetermined intervals is attached to the body posture meter, and the time for entering and leaving the bed is not judged for the time zone when the body temperature information from the body temperature sensor is equal to or lower than the predetermined temperature. The blood pressure measurement device according to claim 1 or 2, characterized in that A posture meter that can be worn on the user's body and measures the user's posture at predetermined intervals;
An actigraph sleep meter that can be worn on the user's body and measures the user's activity at predetermined intervals;
An entrance / exit time calculating unit that obtains the postural information from the posture meter and determines the entrance time and the exit time of the user; and
Determine the user's awakening or sleep from the information of the actigraph sleep meter, and together with the information on the bedtime and bedtime of the bedtime and bedtime calculator, the sleep latency, sleep efficiency, mid-waketime, A sleep state measurement device comprising a sleep calculation unit for calculating total sleep time.   The sleep state measuring apparatus according to claim 4, wherein the posture meter uses a three-axis acceleration sensor.   A body temperature sensor that measures the user's body temperature at predetermined intervals is attached to the body posture meter, and the time for entering and leaving the bed is not judged for the time zone when the body temperature information from the body temperature sensor is equal to or lower than the predetermined temperature. The sleep state measuring apparatus according to claim 4 or 5, characterized in that Continuously measuring a user's blood pressure at a predetermined interval with a sphygmomanometer attached to the user's body;
A step of continuously measuring the posture of the user at a predetermined interval with a posture meter attached to the body of the user;
Calculating the user's bed entry time and bed departure time from the body posture information from the body posture meter;
A blood pressure measuring method comprising: calculating a nighttime blood pressure, a daytime blood pressure, and a nighttime blood pressure decrease rate from the blood pressure information from the blood pressure monitor and the calculated information on bedtime and bedtime.   In the step of calculating the entry time and the departure time, the acceleration in the z-axis direction (the height direction when the user is standing) among the three-axis accelerations measured by the body posture meter is 0.4G to 0.6G. In the time zone where the threshold set in the range of 30 minutes to 3 hours did not exceed the predetermined time, the first time is the entry time, and the acceleration after the entry time exceeds the threshold The blood pressure measurement method according to claim 7, wherein the blood pressure measurement method is determined to be a bed leaving time.   In the step of calculating the entrance time and the exit time, a body temperature sensor is attached to the body posture meter, and the entrance time and the bed time are not determined from the body posture information in a time zone where the temperature information from the body temperature sensor is equal to or lower than a predetermined temperature. The blood pressure measurement method according to claim 7 or 8, wherein the blood pressure measurement method is configured as described above. A step of continuously measuring a user's activity amount at predetermined intervals with an actigraph sleep meter attached to the user's body; and
A step of continuously measuring the posture of the user at a predetermined interval with a posture meter attached to the body of the user;
Calculating the user's bed entry time and bed departure time from the body posture information from the body posture meter;
Sleeping latency, sleep efficiency, midway awakening time, total sleep time based on information on user awakening / sleep state obtained from activity amount information from the actigraph sleep meter and information on the calculated bedtime and bedtime A method for measuring a sleep state, comprising the step of:   In the step of calculating the entry time and the departure time, the acceleration in the z-axis direction (the height direction when the user is standing) among the three-axis accelerations measured by the body posture meter is 0.4G to 0.6G. In the time zone where the threshold set in the range of 30 minutes to 3 hours did not exceed the predetermined time, the first time is the entry time, and the acceleration after the entry time exceeds the threshold The sleep state measuring method according to claim 10, wherein the sleep time is determined to be a bed leaving time.   In the step of calculating the entrance time and the exit time, a body temperature sensor is attached to the body posture meter, and the entrance time and the bed time are not determined from the body posture information in a time zone where the temperature information from the body temperature sensor is equal to or lower than a predetermined temperature. The sleep state measurement method according to claim 10 or 11, wherein the sleep state is measured.

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