JP6107403B2 - Biological information measuring device and program - Google Patents

Description

  The present invention relates to a biological information measuring device, and more particularly to a biological information measuring device that measures biological information over a certain period.

  The present invention also relates to a program for causing a computer to execute a method of measuring biological information over a certain period.

  Conventionally, as this type of biological information measuring device, for example, a body motion sensor as shown in Non-Patent Document 1 (“Sleep Meter Sleep Scan SL-503” manufactured by Tanita Co., Ltd.) is known. This body motion sensor uses a commercial power supply (AC100V power supply), and the user switches on at bedtime and measures body movement continuously from bedtime to waking up. And the measurement ends.)

“TANITA sleep meter sleep scan SL-503”, [online], 2012, [April 2, 2013 search], Internet <URL: http://www.tanita.co.jp/products/ models / sl503.html>

  However, when measuring biological information such as body movement, body temperature, pulse rate, blood pressure, etc. over a long period of time from bedtime to waking up or a full day, a battery (button cell battery, etc.) is not used. It is desirable to be able to measure with relatively little power consumption so that it can operate for a long time.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a biological information measuring device that measures biological information over a certain period and that can reduce power consumption.

  Another object of the present invention is to provide a program for causing a computer to execute a method for measuring biological information over a period of time, which can reduce power consumption.

  In order to solve the above-mentioned problem, the present inventor, for example, always wears a sensor, and the body movement, body temperature, pulse, blood pressure, etc. as biological information, such as from bedtime to waking up or the whole day In applications where measurement is performed over a long period of time, detection / evaluation (or determination) of biological information by a sensor is performed every relatively short period (for example, less than 1 second to 1 minute). It was noted that it may be sufficient to output every relatively long period (eg, 10 to 30 minutes). In such a case, it is considered that the detection of biological information by the sensor does not necessarily have to be continued continuously from the start to the end of the output unit period.

Therefore, the biological information measuring device of the present invention is
A sensor unit for detecting biological information of the measurement subject;
A determination unit that determines whether or not the detection output of the sensor unit has substantially changed for each predetermined determination unit period;
Based on the detection output of the sensor unit, an output unit that outputs an index representing the biological information for each output unit period longer than the determination unit period;
When the determination unit determines that the detection output of the sensor unit has substantially changed within a certain output unit period, it is determined that the detection output of the sensor unit has substantially changed within the output unit period. A control unit that performs control for stopping the detection by the sensor unit and the determination by the determination unit for the remaining period after the determined determination unit period.

  In the present specification, that the detection output of the sensor unit is “substantially changed” means that determination is made by removing a noise component on the detection output of the sensor unit.

  In addition, the “index indicating biological information” widely includes numerical values indicating biological information, indexes indicating the presence / absence of changes, and the like.

  In the biological information measuring apparatus according to the present invention, the sensor unit detects the biological information of the measurement subject. The determination unit determines whether or not the detection output of the sensor unit has substantially changed for each predetermined determination unit period. An output part outputs the parameter | index showing the said biometric information for every output unit period longer than the said determination unit period based on the detection output of the said sensor part.

  Here, when the determination unit determines that the detection output of the sensor unit has substantially changed within a certain output unit period, the control unit outputs the detection output of the sensor unit within the output unit period. Control for stopping the detection by the sensor unit and the determination by the determination unit is performed for the remaining period after the determination unit period determined to have substantially changed. Therefore, power consumption can be reduced as compared with the case where the detection by the sensor unit and the determination by the determination unit are continued until the output unit period expires. As a result, this biological information measuring device can easily operate for a long time using a battery (such as a button battery) as a power source.

  In the biological information measuring apparatus according to an embodiment, when the determination unit determines that the detection output of the sensor unit has substantially changed within a certain output unit period, the output unit outputs a result of the determination. Accordingly, an index representing the biological information is output for the output unit period.

  In the biological information measuring apparatus according to this embodiment, when the output unit determines that the detection output of the sensor unit has substantially changed by the determination unit within a certain output unit period, a result of the determination Accordingly, an index representing the biological information is output for the output unit period. Therefore, the index representing the biological information for the output unit period is desirable because it reflects a substantial change in the detection output of the sensor unit.

In the biological information measuring device of one embodiment,
The sensor unit detects movement of the bedding according to the body movement of the measurement subject as the biological information,
The determination unit determines, for each determination unit period, whether or not there is body movement of the measurement subject according to whether or not the detection output of the sensor unit has substantially changed,
The output unit outputs an index indicating the presence or absence of body movement as an index indicating the biological information,
When the determination unit determines that there has been a body movement within a certain output unit period, the control unit has a remaining time after the determination unit period in which the body movement has been determined within the output unit period. The period is controlled to pause detection by the sensor unit and determination by the determination unit.

In other words, the biological information measuring device of this embodiment is
A sensor unit for detecting the movement of the bedding according to the body movement of the measurement subject;
For each predetermined determination unit period, a determination unit that determines whether or not there is body movement of the measurement subject, depending on whether or not the detection output of the sensor unit has substantially changed,
Based on the detection output of the sensor unit, an output unit that outputs an index indicating the presence or absence of the body movement for each output unit period longer than the determination unit period;
When the determination unit determines that there has been a body movement within a certain output unit period, the sensor for the remaining period after the determination unit period in which the body movement has been determined within the output unit period. And a control unit that performs control to pause detection by the unit and determination by the determination unit.

In this specification, “bedding” refers to bedding such as a mattress or a futon of a bed on which the measurement subject is sleeping.
“Body movement” refers to a body movement that typically continues for 1-3 seconds, such as rolling over.

  In the biological information measuring device according to this embodiment, a sleep state management device that determines the depth of sleep according to the body movement of the measurement subject is realized. That is, the sensor unit detects the movement of the bedding according to the body movement of the measurement subject. The determination unit determines whether or not there has been a body movement of the measurement subject according to whether or not the detection output of the sensor unit has substantially changed for each predetermined determination unit period. The said output part outputs the parameter | index showing the presence or absence of the said body movement for every output unit period longer than the said determination unit period based on the detection output of the said sensor part. The index indicating the presence of the body movement indicates that the person being measured was lightly asleep during the output unit period. On the other hand, the index indicating that there was no body movement indicates that the measurement subject was deeply asleep during the output unit period. Thus, information representing the depth of sleep is output according to the body movement of the measurement subject.

  Here, when the determination unit determines that there has been a body movement within a certain output unit period, the control unit is more than a determination unit period in which the body movement has been determined within the output unit period. For the remaining period thereafter, control is performed to pause detection by the sensor unit and determination by the determination unit. Therefore, power consumption can be reduced as compared with the case where the detection by the sensor unit and the determination by the determination unit are continued until the output unit period expires. As a result, this biological information measuring device can easily operate for a long time using a battery (such as a button battery) as a power source.

  In the biological information measuring apparatus according to an embodiment, when the output unit determines that there is a body movement within a certain output unit period, the output unit period is determined according to a result of the determination. An index indicating that there has been a body movement is output.

  In the biological information measuring apparatus according to this embodiment, when the output unit determines that the body movement has occurred within a certain output unit period, the output unit period is determined according to the determination result. An index indicating that there has been a body movement is output. Therefore, an index indicating that the body movement has occurred for the output unit period reflects a substantial change in the detection output of the sensor unit, which is desirable.

The program of this invention is
A program for causing a computer to execute a method for measuring biological information,
The above method
A detection step for detecting biological information of the person to be measured via the sensor unit;
A determination step of determining whether or not the detection output of the sensor unit has substantially changed for each predetermined determination unit period;
An output step of outputting an index representing the biological information for each output unit period longer than the determination unit period based on the detection output of the sensor unit;
When it is determined that the detection output of the sensor unit has substantially changed in the output unit period within a certain output unit period, it is determined that the detection output of the sensor unit has substantially changed within the output unit period. The detection step and the determination step are suspended for the remaining period after the determined determination unit period.

  In this specification, a computer broadly refers to an apparatus or a system that causes hardware to execute instructions and operations using software (programs).

  According to the program of the present invention, it is possible to cause a computer to execute a method for measuring biological information as follows.

  That is, in the detection step, the biological information of the person to be measured is detected through the sensor unit. Next, in the determination step, it is determined whether or not the detection output of the sensor unit has substantially changed for each predetermined determination unit period. Next, in the output step, an index representing the biological information is output for each output unit period longer than the determination unit period based on the detection output of the sensor unit.

  Here, according to this program, when it is determined by the determination step that the detection output of the sensor unit has substantially changed within a certain output unit period, the detection of the sensor unit within the output unit period is performed. The processes of the detection step and the determination step are suspended for the remaining period after the determination unit period in which it is determined that the output has substantially changed. Therefore, power consumption can be reduced as compared with the case where the processing of the detection step and the determination step is continued until the output unit period expires. As a result, a computer that executes this program can easily operate for a long time using a battery (such as a button battery) as a power source.

  In the output step, when it is determined that the detection output of the sensor unit has substantially changed by the detection step within a certain output unit period, an index representing the biological information is output according to the determination result. It is desirable to do. In that case, the index representing the biological information for the output unit period reflects a substantial change in the detection output of the sensor unit.

In the program of one embodiment,
The above method
In the detection step, the movement of the bedding corresponding to the body movement of the measurement subject is detected as the biological information via the sensor unit,
In the determination step, for each determination unit period, according to whether or not the detection output of the sensor unit has substantially changed, it is determined whether or not there is body movement of the measured person,
In the output step, an index indicating the presence or absence of body movement is output as an index indicating the biological information,
When it is determined by the determination step that there is a body movement within a certain output unit period, the remaining period after the determination unit period in which the body movement is determined within the output unit period is detected. The processing of the step and the determination step is paused.

In other words, the program of this embodiment is
A detection step of detecting the movement of the bedding according to the body movement of the measurement subject via the sensor unit;
A determination step for determining whether or not there is body movement of the measurement subject according to whether or not the detection output of the sensor unit has substantially changed for each predetermined determination unit period;
Based on the detection output of the sensor unit, an output step of outputting an index indicating the presence or absence of the body movement for each output unit period longer than the determination unit period, and
When it is determined by the determination step that there is a body movement within a certain output unit period, the remaining period after the determination unit period in which the body movement is determined within the output unit period is detected. The processing of the step and the determination step is paused.

  In the program according to this embodiment, a sleep state management program for determining the depth of sleep according to the body movement of the measurement subject is realized. That is, first, in the detection step, the movement of the bedding corresponding to the body movement of the measurement subject is detected via the sensor unit. Next, in the determination step, it is determined whether or not the detection output of the sensor unit has substantially changed for each predetermined determination unit period. Next, in the output step, an index indicating the presence or absence of the body movement is output for each output unit period longer than the determination unit period based on the detection output of the sensor unit. The index indicating the presence of the body movement indicates that the person being measured was lightly asleep during the output unit period. On the other hand, the index indicating that there was no body movement indicates that the measurement subject was deeply asleep during the output unit period. Thus, information representing the depth of sleep is output according to the body movement of the measurement subject.

  Here, according to this program, when it is determined by the determination step that there has been a body movement within a certain output unit period, the determination unit period in which it is determined that there has been a body movement within the output unit period. For the remaining remaining period, the processes of the detection step and the determination step are suspended. Therefore, power consumption can be reduced as compared with the case where the processing of the detection step and the determination step is continued until the output unit period expires. As a result, a computer that executes this program can easily operate for a long time using a battery (such as a button battery) as a power source.

  In the output step, when it is determined in the output unit period that there is a body movement in the determination step, an index indicating that there is a body movement in the output unit period is output according to the determination result. It is desirable to do. In that case, the index indicating that the body movement has occurred for the output unit period reflects a substantial change in the detection output of the sensor unit.

  As is clear from the above, according to the biological information measuring apparatus and program of the present invention, power consumption can be reduced.

It is a figure which shows the external appearance of the sleep state management apparatus which is one Embodiment of the biological information measuring device of this invention. It is a figure which shows the block structure of the control system of the said sleep state management apparatus. It is a figure which shows the operation | movement flow of the said sleep state management apparatus. It is a figure which illustrates the detection output of the sensor part of the said sleep state management apparatus. It is a figure explaining the data processing by a moving average for removing a noise component from the detection output of the said sensor part. It is a figure explaining the further data processing by the said sleep state management apparatus. It is a figure explaining the further data processing by the said sleep state management apparatus. It is a figure explaining how to determine the presence or absence of body movement (including turning over) by the sleep state management device. It is a figure explaining the output content for every output unit period by the said sleep state management apparatus, and the method of reduction of power consumption. It is a figure which shows the example which displayed on the display screen of the smart phone the presence or absence of the rolling (body movement) for every output unit period which the said sleep state management apparatus output.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows the appearance of a sleep state management apparatus (the whole is denoted by reference numeral 1), which is an embodiment of the biological information measuring apparatus of the present invention, as viewed obliquely.

  The sleep state management device 1 includes a box-shaped housing 10 and a display unit 11, an operation unit 13, and a sensor unit 12.

  A display unit 11 and an operation unit 13 are provided on the upper surface of the housing 10 (one of two surfaces parallel to the XY plane). The sensor unit 12 is provided in the housing 10.

  The sleep state management device 1 is placed on the bedding such that the bottom surface of the housing 10 (the other of the two surfaces parallel to the XY plane) is in contact with the bed and the bedding such as a futon on which the measurement subject sleeps. Used in state.

  The display unit 11 displays various menus and the like of the sleep state management device 1, and is configured by, for example, a liquid crystal display device or an organic EL (electroluminescence) display device.

  The operation unit 13 is an interface for performing power-on and various operations of the sleep state management device 1 and includes, for example, a button switch.

  The sensor unit 12 is a three-axis acceleration sensor that detects an acceleration in the X-axis direction, an acceleration in the Y-axis direction, and an acceleration in the Z-axis direction, and outputs an X-axis detection signal, a Y-axis detection signal, and Z as detection outputs. Axis detection signal is output.

  The detection signal detected by the sensor unit 12 while the sleep state management device 1 is placed on the bedding corresponds to the movement (vibration) of the bedding. That is, the sensor unit 12 functions as a vibration detection sensor that detects the movement of the bedding on which the measurement subject is sleeping.

  Thus, the sensor unit 12 detects the movement of the bedding caused by the movement of the measurement subject. Compared to the movement of the body of the person being measured, the movement of the bedding caused by the movement is slight. Therefore, the level of the detection signal output by the sensor unit 12 is very small.

  FIG. 2 shows a block configuration of a control system of the sleep state management apparatus 1.

  In addition to the display unit 11, the sensor unit 12, and the operation unit 13 illustrated in FIG. 1, the sleep state management device 1 includes a battery 15, a power supply unit 16, a recording control unit 17, and a communication interface (I / F). 18, a recording medium 19, and a control unit 14 that performs various arithmetic processes and controls the sleep state management apparatus 1 as a whole.

  The battery 15 is, for example, a button battery. The power supply unit 16 supplies the power of the battery 15 to each unit of the sleep state management device 1 via the control unit 14.

  The recording medium 19 records data generated by the control unit 14 and is configured by, for example, a flash memory.

  The recording control unit 17 is a driver for the recording medium 19, and performs data writing to the recording medium 19 and data reading from the recording medium 19 under the instruction of the control unit 14.

  The communication I / F 18 is an interface for performing wireless or wired communication with an electronic device 2 (a personal computer, a mobile phone such as a smartphone) outside the sleep state management apparatus 1.

  A detection signal from the sensor unit 12 is digitally converted and input to the control unit 14. The control unit 14 is configured mainly by a CPU (central processing unit), performs various arithmetic processes based on the input detection signal, and records data based on the result of the arithmetic process in the recording medium 19.

  The operation unit 13 is connected to the control unit 14, and a signal corresponding to the operation of the operation unit 13 is input to the control unit 14, and the control unit 14 performs control according to the signal. The control unit 14 also includes a ROM for storing a program executed by the CPU, a RAM as a work memory, and the like.

  Next, the operation of the sleep state management device 1 will be described. In this example, a determination unit period t, which is a unit for determining whether or not a subject's body movement has occurred, and an output that is a unit for outputting an index indicating the presence or absence of the body movement that is longer than the determination unit period t. A unit period T is preset. In the following example, the output unit period T is 10 minutes, but is not limited thereto.

  FIG. 3 shows an operation flow of the sleep state management apparatus. Each step shown in FIG. 3 is executed by the CPU of the control unit 14 based on a program stored in the ROM.

  The person to be measured places the sleep state management device 1 on the bedding and operates the operation unit 13 to give a sleep state recording start instruction. When this recording start instruction is issued, the detection signal (digital value) output by the sensor unit 12 is stored in the RAM of the control unit 14. In addition, when the recording end instruction of the sleep state is given by the operation of the operation unit 13, the storage of the detection signal in the RAM is stopped.

  First, as shown in step S1 of FIG. 3, when a detection signal is accumulated in the RAM to some extent within a certain output unit period T, the control unit 14 detects the detection stored in the RAM via the sensor unit 12. Detection signals (X-axis detection signal, Y-axis detection signal, Z-axis detection signal) for a detection signal for a certain period (14 seconds as an example here) are acquired from the signal. This step S1 corresponds to a detection step.

  These X-axis detection signal, Y-axis detection signal, and Z-axis detection signal indicate waveforms including noise components as illustrated in FIG. FIG. 4 exemplifies waveforms of the X-axis detection signal, the Y-axis detection signal, and the Z-axis detection signal obtained in 5 to 9 seconds in the fixed period (14 seconds). In the example of FIG. 4, in addition to a gentle and large change D indicating body movement (for example, about several tens of millimeters G when the gravitational acceleration is expressed as G), a high-frequency fine noise component d is included. Yes.

  Next, as shown in step S2 of FIG. 3, the control unit 14 calculates a moving average for each of the X-axis detection signal, the Y-axis detection signal, and the Z-axis detection signal in order to remove noise components. Perform the process.

  In this example, as shown in FIG. 5, the control unit 14 sets each detection signal within a range of t1 seconds (for example, from 1/32 seconds to 0.25 seconds. In this example, it is set to 0.25 seconds. .) Sampling and extracting at every time, and the range between the past t2 seconds (for example, set in the range from 0.5 seconds to 3 seconds, which is 1 second in this example) with the time as the end. The average value of the plurality of detection signals at the time is calculated as the moving average value at that time. FIG. 5 shows a schematic waveform W when the moving average process is performed on the X-axis detection signal as an example.

  Here, the reason why the average value in the range of 1 second is taken is that the frequency spectrum of body motion (turning over) is actually 1 Hz or less, so the cut-off frequency is set to 1 Hz and is irrelevant to body motion. This is for removing high-frequency noise components.

  Next, as shown in step S <b> 3 of FIG. 3, the control unit 14 calculates the integrated value by integrating the moving average values for the X axis, Y axis, and Z axis in order to further remove noise components. .

In this example, as shown in FIG. 6, the integrated values I ₁ , I ₂ ,... Are calculated by adding the moving average values within the range of t seconds starting from that time to the time every t seconds. . FIG. 6 shows an integrated value of moving average values derived from the X-axis detection signal as an example.

The period of every t seconds for obtaining the integrated values I ₁ , I ₂ ,... Corresponds to a determination unit period t that is a unit for determining the presence or absence of body movement. The determination unit period t is set in a range from 1/32 seconds to 1 second, for example. In this example, it is 0.5 seconds or 1 second.

Next, as shown in step S4 of FIG. 3, the integrated values I ₁ and I ₂ in the past tb seconds with the time ending at the time every t seconds for the X axis, Y axis, and Z axis, respectively. ,... Are detected as a difference Δ (absolute value) between the maximum value and the minimum value. This tb second is set in a range from 1 second to 3 seconds, for example.

For example, in FIG. 7 (. It shows the same data as FIG. 6), the integrated value I ₃ is the maximum value, the integrated value I ₅ becomes the minimum value. Therefore, the difference Δ = | I ₃ −I ₅ |

  Here, the reason for paying attention to the difference Δ between the maximum value and the minimum value in the past tb seconds is that the human body movement (including turning over) typically continues for 1 to 3 seconds. . Therefore, in order to appropriately determine the presence or absence of body movement, it is desirable to see the change over a period of about 1 to 3 seconds.

  Next, as shown in step S5 of FIG. 3, with respect to the X-axis, Y-axis, and Z-axis, the difference Δ is added corresponding to each time to obtain an added value.

In this example, as shown in FIG. 8, addition values A ₁ , A ₂ ,... Are obtained at times every t seconds (that is, determination unit period t).

Next, as shown in step S6 of FIG. 3, whether or not the addition values A ₁ , A ₂ ,... Of the difference Δ obtained for each determination unit period t exceed the threshold value α within the output unit period T. Determine whether.

  Steps S2 to S6 described above correspond to determination steps, and are executed by the control unit 14 acting as a determination unit.

Here, as shown in FIG. 8, the threshold value α, which is a criterion for determining whether or not there has been a body movement, is set in advance based on experience. In the example of FIG. 8, it is determined that the added value A ₄ of the difference Δ exceeds the threshold alpha.

If there is no determination unit period t in which the added values A ₁ , A ₂ ,... Of the difference Δ exceed the threshold α within the output unit period T (NO in step S6), the process proceeds to step S7 in FIG. It is determined whether or not the output unit period T has expired. If the output unit period T has not expired (NO in step S7), the processing in steps S1 to S6 (processing in the detection step and determination step) is repeated. If the output unit period T has expired, the process proceeds to step S8, and an index of “no rollover” indicating that there was no body movement for the output unit period T is output.

On the other hand, if there is a determination unit period t in which the addition values A ₁ , A ₂ ,... Of the difference Δ exceed the threshold value α within the output unit period T (YES in step S6), the output unit period T For the remaining period after the determination unit period t determined to have undergone body movement, the processes in steps S1 to S6 are suspended (step S9), and the output unit period T is waited for to expire (step S10). . Then, after the output unit period T has expired (YES in step S10), the process proceeds to step S11, and “turns over” indicating that there is body movement in the output unit period T according to the result of the determination described above. Is output.

  After step S8 or step S11, the process returns to step S1, and the control unit 14 executes processing for the next output unit period following the output unit period T. Steps S8 and S11 correspond to output steps. In this example, the control unit 14 functions as an output unit, and outputs to the recording medium 19 via the recording control unit 17.

  In this case, as schematically shown in FIG. 9, an output corresponding to the above-described determination result is made for each output unit period T (in FIG. 9, for the sake of simplicity, the output per output unit period T is The number of ● marks indicating the added value of the difference Δ is smaller than the actual number). For example, in the output unit period T at the left end in FIG. 9, since the added value of the difference Δ does not exceed the threshold value α during the period T and it is determined that there is no body movement, an index “no rollover” is output. . In the middle output unit period T in FIG. 9, since the added value of the difference Δ exceeds the threshold value α during the period T and it is determined that there is a body movement, an indicator “turning over” is output. Similarly, in the output unit period T at the right end in FIG. 9, during the period T, the added value of the difference Δ exceeds the threshold value α, and it is determined that there is a body motion, so an indicator “turning over” is output. .

  The indicator “there is a turnover” indicates that the person being measured was not asleep during the output unit period T. On the other hand, the index “no lie down” represents that the measurement subject was deeply asleep during the output unit period. Thus, information representing the depth of sleep is output according to the body movement of the measurement subject.

  Here, as can be seen from FIG. 9, for example, in the output unit period T at the right end of the center, until the control unit 14 determines that there is a body movement (period indicated as “measurement” in FIG. 9) in FIG. 3. The processes of steps S1 to S6 are repeated, but when it is determined that there is body movement, the remaining period (determination unit period t) after the period determined that there is body movement within the output unit period T (determination unit period t) ( For the period indicated as “pause” in FIG. 9, control is performed to pause the processing of steps S1 to S6 in FIG. 3. Therefore, power consumption can be reduced as compared with the case where the processes of steps S1 to S6 are repeated until the output unit period T expires. As a result, the sleep state management device 1 can easily operate for a long time using the battery (button battery) 15 as a power source.

  FIG. 10 transfers the indicator about the presence or absence of turning over for each output unit period T obtained by the sleep state management apparatus 1 to the smartphone as the electronic device 2 via the communication I / F 18, and the display screen 70 of the smartphone The example displayed above is shown.

  In the example of FIG. 10, the date 72 at which the measurement was performed is shown in the upper part of the display screen 70. In this example, the date 72 indicates the period from October 23, 2012 to the 24th. On both sides, a touch key 71 for returning the date 72 to the previous day and a touch key 73 for advancing the date 72 to the next day are displayed.

  In the middle of the display screen 70, a band-shaped graph 75 indicating an indicator for the presence or absence of turning over for each output unit period T is displayed. The belt-like graph 75 is in a form of meandering up and down across the horizontal line 81 that distinguishes daytime and nighttime. Above the horizontal line 81 corresponds to daytime, and below the horizontal line 81 corresponds to nighttime. “12”, “15”, “18”, “21”, “0”, “3”, “6”, “0”, “9” so as to indicate the passage of time along the band graph 75. ... A 24-hour time display is attached. Sun marks 83 and 85 are attached to the daytime side, and a crescent moon mark 84 is attached to the night side.

  The band graph 75 is composed of a set of thin bars 76, 76,... Extending radially with respect to the center points C0, C1, C2 on the horizontal line 81. Each of these bars 76, 76,... Corresponds to an output unit period T (= 10 minutes) (in FIG. 10, the number of bars 76, 76,. Less is shown).

  In this example, the three bars 76s corresponding to about 21:40 on October 23, 2012 are colored, thereby indicating that the subject has fallen asleep at about 21:40 on the same day. Yes. Further, three bars 76g corresponding to about 6:15 on October 24, 2012 are colored, thereby indicating that the person to be measured got up at about 6:15 on the same day. In addition, it can be calculated | required by a well-known method that the to-be-measured person fell asleep or woke up based on the output result about the presence or absence of turning. The sleep time of the person being measured from October 23, 2012 to October 24, 2012 is displayed as a character string 74 of “8 hours and 35 minutes”.

  A period between the three bars 76s at the time of falling asleep and the three bars 76g at the time of getting up corresponds to a period during which the measurement subject is sleeping. In this example, bars 76t-1 and 76t-2 at 2am, bars 76t-3 at 3am, and bars 76t-4, 76t-5 and 76t-6 at 4am are colored and displayed. (In more detail, only the half of the bar far from the center point C1 is colored.). In response to this coloring, the person to be measured “turned over” in the output unit period T corresponding to the bars 76t-1, 76t-2,..., 76t-6, that is, in the output unit period T It shows that the sleep of the measurer was shallow. On the other hand, in the output unit period T other than these, it is indicated that there was no “turning over” in accordance with the fact that the bar 76t was not colored, that is, the measurement subject was deeply asleep.

  In this way, information representing the depth of sleep with the passage of time is displayed on the display screen 70 of the smartphone on the basis of the index representing the presence or absence of body movement (turning over) from the sleep state management device 1. .

  Note that the operation flow (FIG. 3) executed by the control unit 14 of the sleep state management device 1 can also be executed by the electronic device 2 connected to the sleep state management device 1.

  In this case, a program for causing the computer to execute the operation flow (FIG. 3) may be installed in the electronic device 2.

  Such a program is recorded (encoded) on a non-transitory recording medium such as an optical medium such as a CD-ROM (compact disk-read only memory) or a magnetic recording medium such as a memory card. Can be provided in state. Such a program can also be provided by downloading via a network.

  Although the above embodiment demonstrated the example which comprised the biological information measuring device of this invention as the sleep state management apparatus 1, it is not restricted to this.

  The biological information measuring apparatus according to the present invention is a method in which a measurement subject wears a sensor and measures body movement, body temperature, pulse, blood pressure, etc. as biological information from bedtime to waking up or for a long time such as a full day. Can be widely applied to.

  For example, the biological information measuring apparatus according to the present invention may be applied to an activity meter (including an acceleration sensor as a sensor unit) that measures an activity amount of the measurement subject. In this case, the exercise intensity (for each determination unit period t (for example, 0.5 second) within the output unit period T in the output unit period T (for example, 10 minutes) with the measurement subject wearing the acceleration sensor. It is determined whether or not (METabolic equivalents) exceeds a threshold value of 3 METs, for example. Then, when the exercise intensity exceeds a threshold value 3 METs within a certain output unit period T, the acceleration for the remaining period after the determination unit period t within which the exercise intensity exceeds the threshold value 3 METs within the output unit period T. The detection by the sensor and the determination of the exercise intensity are suspended. Thereby, power consumption can be reduced. As a result, the activity meter can easily operate for a long time using a battery (button battery or the like) as a power source. For the output unit period T including the determination unit period t in which the exercise intensity exceeds the threshold value 3METs, for example, a flag indicating that the exercise intensity exceeds the threshold value 3METs may be output as an index.

  Moreover, you may apply the biological information measuring device of this invention to the thermometer (a temperature sensor is included as a sensor part) which measures a to-be-measured person's body temperature. In that case, the measurement subject wears the temperature sensor, and every output unit period T (for example, 10 minutes), every determination unit period t (for example, 0.5 second or 1 second) within the output unit period T. It is determined whether the body temperature has changed, for example, exceeding a threshold value of 0.1 ° C. When the change in body temperature exceeds a threshold value of 0.1 ° C. within a certain output unit period T, the change in the body temperature within the output unit period T exceeds the determination unit period t during which the threshold value exceeds 0.1 ° C. For the remaining period thereafter, detection by the temperature sensor and determination of body temperature change are suspended. Thereby, power consumption can be reduced. As a result, the thermometer can easily operate for a long time using a battery (button battery or the like) as a power source. As for the output unit period T including the determination unit period t in which the body temperature change exceeds the threshold value 0.1 ° C., for example, the body temperature detected last in the output unit period T so as to reflect the determination result of the body temperature change. An index representing the measurement result may be output.

  As described above, the output unit period T is not limited to 10 minutes. For example, the output unit period T may be set in the range of 10 minutes to 30 minutes, for example. Furthermore, the output unit period T may be set to several hours so that output is performed in the morning, noon, and evening.

  The above-described embodiments are merely examples, and various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Sleep state management apparatus 12 Sensor part 14 Control part

Claims (6)

A sensor unit for detecting biological information of the measurement subject;
A determination unit that determines whether or not the detection output of the sensor unit has substantially changed for each predetermined determination unit period;
Based on the detection output of the sensor unit, an output unit that outputs an index representing the biological information for each output unit period longer than the determination unit period;
When the determination unit determines that the detection output of the sensor unit has substantially changed within a certain output unit period, it is determined that the detection output of the sensor unit has substantially changed within the output unit period. A biological information measuring device comprising: a control unit that performs control to pause detection by the sensor unit and determination by the determination unit for a remaining period after the determined determination unit period. The biological information measuring device according to claim 1,
When the determination unit determines that the detection output of the sensor unit has substantially changed within a certain output unit period, the output unit performs the biological unit for the output unit period according to the determination result. A biological information measuring device that outputs an index representing information. The biological information measuring device according to claim 1,
The sensor unit detects movement of the bedding according to the body movement of the measurement subject as the biological information,
The determination unit determines, for each determination unit period, whether or not there is body movement of the measurement subject according to whether or not the detection output of the sensor unit has substantially changed,
The output unit outputs an index indicating the presence or absence of body movement as an index indicating the biological information,
When the determination unit determines that there has been a body movement within a certain output unit period, the control unit has a remaining time after the determination unit period in which the body movement has been determined within the output unit period. A biological information measuring device that performs control to pause detection by the sensor unit and determination by the determination unit for a period. The biological information measuring device according to claim 3,
When the determination unit determines that there is a body movement within a certain output unit period, the output unit displays an index indicating that there is a body movement for the output unit period according to the determination result. A biological information measuring device that outputs the biological information. A program for causing a computer to execute a method for measuring biological information,
The above method
A detection step for detecting biological information of the person to be measured via the sensor unit;
A determination step of determining whether or not the detection output of the sensor unit has substantially changed for each predetermined determination unit period;
An output step of outputting an index representing the biological information for each output unit period longer than the determination unit period based on the detection output of the sensor unit;
When it is determined that the detection output of the sensor unit has substantially changed in the output unit period within a certain output unit period, it is determined that the detection output of the sensor unit has substantially changed within the output unit period. A program characterized by suspending the processing of the detection step and the determination step for the remaining period after the determined determination unit period. The program according to claim 5,
The above method
In the detection step, the movement of the bedding corresponding to the body movement of the measurement subject is detected as the biological information via the sensor unit,
In the determination step, for each determination unit period, according to whether or not the detection output of the sensor unit has substantially changed, it is determined whether or not there is body movement of the measured person,
In the output step, an index indicating the presence or absence of body movement is output as an index indicating the biological information,
When it is determined by the determination step that there is a body movement within a certain output unit period, the remaining period after the determination unit period in which the body movement is determined within the output unit period is detected. A program characterized by pausing the processing of the step and the determination step.

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