JP2009195589A - Biological information processing apparatus and its controlling method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a biological information processing apparatus which calculates calories burned and its controlling method. <P>SOLUTION: The biological information processing apparatus 1 determines whether a measured pulse rate HR satisfies conditions which are set to estimate the measured pulse rate as a pulse rate in a resting state HRrest in advance (Steps S2, S3). If the apparatus 1 determines the measured pulse rate HR satisfies the conditions, the apparatus 1 updates a set value of the pulse rate in a resting state which is stored in advance to the pulse rate HR which satisfies the conditions (Step S4). <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a biological information processing apparatus that calculates a calorie consumption and a control method thereof.

Some calorie consumption measuring devices calculate the calorie consumption by an arithmetic expression using the measured pulse rate and resting pulse rate (see, for example, Patent Document 1). In this type of device, it is necessary to set a resting pulse rate in advance. For this reason, the resting pulse rate measured by the user in advance is input, or an estimated value of the resting pulse rate is calculated and set from the age input by the user.
Japanese Patent No. 356088

However, since the pulse rate rises due to various factors for each user, the user may not be able to measure the exact resting pulse rate even if the user intends to be at rest. There are individual differences in the pulse rate. For this reason, the calorie consumption according to the user cannot necessarily be calculated.

The present invention has been made in view of the above-described circumstances, and it is an object of the present invention to provide a biological information processing apparatus capable of calculating the calorie consumption according to the user and a control method thereof.

In order to solve the above-described problems, the present invention provides a biological information processing apparatus, a pulse measurement unit that measures a user's pulse rate, and a storage unit that stores setting values of the user's resting pulse rate and maximum pulse rate. The calorie consumption calculation unit that calculates the calorie consumption based on the pulse rate measured by the pulse measurement unit and the set values of the resting pulse rate and the maximum pulse rate stored in the storage unit, and the pulse measurement A determination unit that determines whether or not the pulse rate measured by the unit satisfies a predetermined condition that can be estimated as a resting pulse rate, and the determination unit determines that the condition is satisfied, the storage The setting value of the resting pulse rate stored in the unit is updated to a pulse rate that satisfies the above condition.
According to this configuration, it is determined whether or not the pulse rate measured by the pulse measuring unit satisfies a predetermined condition that can be estimated as a resting pulse rate, and if the condition is satisfied, the rest stored in the storage unit is determined. Since the setting value of the time pulse rate is updated, the resting pulse rate reflecting the individual difference of the user can be set. For this reason, the calorie consumption according to the user can be calculated based on the resting pulse rate.

In this case, the predetermined condition may be that the measured pulse rate continuously falls below the set value of the resting pulse rate stored in the storage unit.
In addition, a body motion detection unit that detects the body motion level of the user, and the predetermined condition is:
The body motion level detected by the body motion detection unit may include a pulse rate measured when the body motion level is a level that can be determined as a resting state.
Further, when the set value of the resting pulse rate stored in the storage unit is updated, the value of the set value is gradually changed to a pulse rate that satisfies the condition, and then the condition is changed. You may make it update to the satisfy | filled pulse rate.
Further, the pulse measurement unit has an instruction input unit for inputting a measurement instruction for a resting pulse rate, and the determination unit is measured by the pulse measurement unit when a measurement instruction for a resting pulse rate is input. It may be determined whether or not the determined pulse rate satisfies a predetermined condition that can be estimated as a resting pulse rate.
Furthermore, the determination unit determines whether the pulse rate measured by the pulse measurement unit satisfies another predetermined condition that can be estimated as the maximum pulse rate, and the determination unit determines the other condition. When it determines with satisfy | filling, you may make it update the setting value of the maximum pulse rate memorize | stored in the said memory | storage part to the pulse rate which satisfy | filled said other conditions.
In this case, the other condition may be that the measured pulse rate continuously exceeds the set value of the maximum pulse rate stored in the storage unit.

Further, the present invention provides a control method for a biological information processing apparatus, wherein each setting of a pulse measurement process for measuring a user's pulse rate, a measured pulse rate, a resting pulse rate and a maximum pulse rate stored in a storage unit A calorie consumption calculation process for calculating a calorie consumption amount based on the value and determining whether the measured pulse rate satisfies a predetermined condition that can be estimated as a resting pulse rate, and satisfies the above condition When it is determined that the pulse rate has been satisfied, the set value of the resting pulse rate stored in the storage unit is updated to a pulse rate that satisfies the above condition.

  According to the present invention, it is possible to calculate the calorie consumption according to the user.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram illustrating a biological information processing apparatus 1 according to the present embodiment. The biological information processing apparatus 1 detects a pulse wave signal that is user's pulse information, calculates a pulse rate from the detected pulse wave signal, and calculates a user's calorie consumption based on the calculated pulse rate. is there.
The biological information processing apparatus 1 can be broadly classified as a wristwatch-type apparatus main body 10 attached to a user's wrist L, and connected to the apparatus main body 10 via a cable 20 so as to be capable of signal communication, which is user's pulse information. And a pulse wave sensor (pulse measuring unit) 30 for detecting a pulse wave signal. As shown in FIG. 1, the apparatus main body 10 is provided with a wristband 12, and the apparatus main body 10 is detachably attached to the wrist L of the user via the wristband 12.

FIG. 2 is a plan view of the apparatus main body 10 of the biological information processing apparatus 1, and FIG. 3 is a side view of the apparatus main body 10 viewed from the 3 o'clock direction with the biological information processing apparatus 1 attached to the user. .
In FIG. 2, the apparatus body 10 includes a resin watch case 11. Watch case 1
1 is provided with a liquid crystal display device 13 (display unit) with an EL backlight that displays the user's pulse rate, calorie consumption, body motion pitch, and the like in addition to the current time and date. .
The liquid crystal display device 13 includes a first segment display area 131 located on the upper left side of the display surface,
A second segment display area 132 located on the upper right side, a third segment display area 133 located on the lower right side, and a dot display area 134 located on the lower left side are configured. This information can be displayed graphically.
Button switches 111 to 115 are provided on the outer periphery of the watch case 11 to give various instructions such as start of measurement of calorie consumption, and large button switches 116 and 117 are provided on the surface of the watch case 11. Yes. In this embodiment, these button switches 111-111
The user can input and register individual information such as his / her gender, age, height, and weight using 117. This registered individual information is used at the time of calorie consumption calculation to be described later.

A body motion sensor (body motion detector) 90 is built in the watch case 11. This body motion sensor 90 detects the presence or absence of movement of the apparatus body 10 itself of the biological information processing apparatus 1,
It is a sensor that detects a body motion signal used to calculate the body motion level of the apparatus main body, and to calculate the body motion pitch and the body motion level of the user.
A control unit 5 that centrally controls each unit of the biological information processing apparatus 1 is provided inside the watch case 11. The control unit 5 calculates the pulse rate and calorie consumption based on the pulse wave signal detected by the pulse wave sensor 30. Further, the control unit 5 detects the presence or absence of movement of the apparatus main body 10 based on the body movement signal detected by the body movement sensor 90, calculates the level of movement of the apparatus main body 10, and further, the pitch of the user's body movement And calculate the level of body movement. The control unit 5 can display the calculated pulse rate, calorie consumption, user's body motion pitch, and body motion level on the liquid crystal display device 13 according to the user's instructions. Furthermore, the control unit 5 includes a time measuring circuit, and can display normal time on the liquid crystal display device 13.

In addition, a button-type small battery 59 is provided inside the watch case 11. The battery 59 supplies power to the biological information processing apparatus 1. The pulse wave sensor 30 is supplied with electric power from the battery 59 via the cable 20. Inside the watch case 11, a buzzer flat piezoelectric element 58 is arranged at 9 o'clock with respect to the battery 59.
Since the battery 59 is heavier than the piezoelectric element 58, the position of the center of gravity of the apparatus main body 10 is offset in the 3 o'clock direction. Since the wristband 12 is connected to the side where the center of gravity is biased,
The apparatus main body 10 can be worn on the arm in a stable state. Furthermore, since the battery 59 and the piezoelectric element 58 are arranged in the plane direction, the apparatus main body 10 can be thinned.

In FIG. 3, a connecting portion 121 for connecting one end of the wristband 12 is formed in the 12 o'clock direction of the watch case 11, and the other end of the wristband 12 is connected in the 6 o'clock direction. A connecting portion 122 for connecting is formed, and the wristband 12 is connected to the watch case 11 via these connecting portions 121 and 122.
Further, as shown in FIG. 3, a curved portion 109 that is curved toward the back surface portion 119 is formed in the 6 o'clock direction of the apparatus main body 10, and rotation is stopped at the end of the curved portion at the 6 o'clock direction. Part 108
Is formed. When the biological information processing apparatus 1 is attached to the wrist L, the back surface portion 119 of the watch case 11 is in close contact with the upper surface portion L1 of the wrist L, and the rotation stopper 108 is connected to the wrist L.
The side surface portion L2 which is the side surface where the rib R exists is in contact. For this reason, even if it is going to rotate the apparatus main body 10 in the direction of arrow A or arrow B of FIG.
The rotation is prevented by 8 and the apparatus main body 10 is not unnecessarily displaced around the wrist L. In particular, in the present embodiment, it is assumed that the user exercises with the biological information processing apparatus 1 attached. However, even when the user exercises with the above-described configuration, the apparatus main body 10 moves around the wrist L. Since it does not shift unnecessarily, it is possible to improve user comfort.

FIG. 4 is a view showing the pulse wave sensor 30 attached to the finger, and FIG.
FIG. In FIG. 5, the upward direction in FIG. 5 is the direction in which the finger is positioned when the pulse wave sensor 30 is attached to the finger.
The pulse wave sensor 30 is a sensor for detecting a pulse wave signal that is a user's pulse information,
It is worn between the base of the user's finger and the finger joint while being shielded by the sensor fixing band 40. Thus, since the pulse wave sensor 30 is attached to the base of the finger, the apparatus main body 10
And the pulse wave sensor 30 are close to each other, the cable 20 can be short, and the cable 20 can be prevented from being loosened or loosened, and the cable 20 does not get in the way during the user's movement. Also,
When the distribution of body temperature from the palm to the fingertip is measured, the temperature of the fingertip is significantly reduced when it is cold, whereas the temperature at the base of the finger is not relatively lowered. Therefore, when the pulse wave sensor 30 is mounted at the base of the finger, the user's pulse wave signal can be detected without being relatively affected by the temperature of the outside air.

In FIG. 5, the pulse wave sensor 30 has a back cover 4 on the back side of a sensor frame 36 as its case body.
The component storage space 400 is formed inside by covering 02. A circuit board 35 is arranged in the component storage space 400. On the circuit board 35, an LED 31, a phototransistor 32, and other electronic components are mounted. The end of the cable 20 is fixed to the pulse wave sensor 30 by a bush 493, and each wiring of the cable 20 is connected to each circuit board 3.
5 is soldered on the pattern.
A light transmitting plate 34 made of a glass plate is provided on the upper surface portion of the sensor frame 36, and the LED 31 is disposed below the light receiving plate with the light emitting surface facing the light transmitting plate 34. In addition, the phototransistor 32 is arranged with the light receiving surface facing. Because of this configuration
When the pulse wave sensor 30 is worn on the finger to detect the pulse wave signal, the light emitted from the LED 31 is applied to the finger through the translucent plate 34, and the light reflected from the finger is transmitted through the translucent plate 34. The phototransistor 32 can receive light. Here, in order to improve the adhesion between the outer surface 441 of the translucent plate 34 and the finger surface, the outer surface 441 of the translucent plate 34 has a structure protruding from the peripheral portion 461 thereof.

The pulse wave sensor 30 detects a pulse wave signal by irradiating light from the LED 31 toward the blood vessel of the finger and receiving light reflected from the blood vessel by the phototransistor 32. In detecting the pulse wave signal, the present embodiment uses the LED 44 whose emission wavelength region is in the range of 300 nm to 700 nm and the phototransistor 45 whose light reception wavelength region is 700 nm or less. Thereby, among the light included in the external light, the light having a wavelength region of 700 nm or less is
While light does not reach the phototransistor 45 with the finger as a light guide, most of the light of 300 nm or less is absorbed by the skin surface, so that it is possible to detect a pulse wave without being affected by direct sunlight. it can.

FIG. 6 is a block diagram showing a functional configuration of the biological information processing apparatus 1.
As shown in FIG. 6, the control unit 5 is roughly classified into a pulse wave data processing unit 500 that performs shaping and A / D conversion of a pulse wave signal detected by the pulse wave sensor 30 and a body motion sensor 90. A body motion data processing unit 501 that performs shaping and A / D conversion of a body motion signal, a clock generation unit 502 that generates an operation clock signal, and a control unit 503 that controls the entire control unit 5 are provided.
The pulse wave data processing unit 500 includes a pulse wave signal amplification circuit 303, a pulse wave waveform shaping circuit 306,
A body motion data processing unit 501 and an A / D conversion circuit 305 shared are provided. The pulse wave signal amplification circuit 303 outputs the pulse wave amplification signal generated by amplifying the pulse wave signal input from the pulse wave sensor 30 to the A / D conversion circuit 305 and the pulse wave waveform shaping circuit 306. Pulse waveform shaping circuit 30
6 performs waveform shaping of the pulse wave amplification signal and outputs it to the control unit 503. The A / D conversion circuit 305 performs A / D conversion of the pulse wave amplification signal to control the control unit 503 as pulse wave data.
Output to.

The body motion data processing unit 501 includes a body motion signal amplification circuit 304 and a body motion waveform shaping circuit 307. The body motion signal amplification circuit 304 outputs the body motion amplification signal generated by amplifying the body motion signal input from the body motion sensor 90 to the A / D conversion circuit 305 and the body motion waveform shaping circuit 307.
The body motion waveform shaping circuit 307 performs waveform shaping of the body motion amplification signal and outputs it to the control unit 503. The A / D conversion circuit 305 performs A / D conversion of the body motion amplification signal and outputs it to the control unit 503 as body motion data.
The clock generation unit 502 includes an oscillation circuit 312 and a frequency dividing circuit 313. The oscillation circuit 312 includes a crystal oscillator, supplies the clock signal to the control unit 503 as a reference operation clock, and supplies it to the frequency dividing circuit 313 to generate a clock signal for clocking from the clock signal. The frequency dividing circuit 313 divides the supplied clock signal, generates various clock signals for timing, and supplies them to the control unit 503.

The control unit 503 is roughly divided into an MPU 308, a RAM 309, and a ROM 31.
0 and a communication unit 311. The MPU 308 centrally controls each unit of the biological information processing apparatus 1 based on a control program stored in the ROM 310. The RAM 309 is M
It is used as a work area for the PU 308 and temporarily stores the calculation results by the MPU 308 and various data including the above-described pulse wave data and body motion data. In addition, this RAM 309
Is also used as a storage unit for storing each set value of the user's resting pulse rate HRrest and the maximum pulse rate HRmax, and the user's (measurement target) weight W, gender, height T, age AGE, and the like. The ROM 310 stores various data such as a control program executed by the MPU 308. The communication unit 311 transmits / receives data to / from an external device connected via a communication connector under the control of the MPU 308. Thereby, calculation data can be output to an external apparatus, and various information can be input into the said biometric information processing apparatus 1 from an external apparatus.

The biological information processing apparatus 1 according to the present embodiment calculates the pulse rate HR based on the pulse wave signal detected by the pulse wave sensor 30, and calculates the calorie consumption C based on the pulse rate HR. Next, a method for calculating the calorie consumption C according to this embodiment will be described.
In the present embodiment, in consideration of the fact that oxygen is always used when energy is consumed, a method is employed in which the oxygen intake is obtained from the pulse rate, and the calorie consumption (kcal / mim) is calculated from the oxygen intake. The following formula (1) is applied as the calculation formula.

C = (HR−HRrest) / (HRmax−HRrest) ×
(VO ₂ max−VO ₂ rest) × W × K / t / 60 (1)
Here, HR is the pulse rate (times / min), HRrest is the resting pulse rate (times / min),
HRmax is the maximum pulse rate (times / min), VO ₂ max is the maximum oxygen uptake (ml / min),
VO ₂ rest is resting oxygen uptake (ml / min). K is a calorie consumption conversion value (kcal / ml), and t is a measurement interval (s) of the pulse rate HR (4 seconds in this example).
It is assumed that the user's (measurement subject) weight W, gender, height T, and age AGE have already been input from the user.

That is, the value of (HR−HRrest) / (HRmax−HRrest) is obtained by subtracting the resting pulse rate HRrest from the maximum pulse rate HRmax to obtain the reserve power of the heart, and the current pulse rate HR is set to what percentage of the reserve power. It is a value calculated as to whether it corresponds, and this shows the relative pulse rate RHR. Next, for this relative pulse rate RHR, ((VO ₂ max−VO ₂ rest) × W / t / 6
When 0) is multiplied, the oxygen intake RVO ₂ taken during the measurement interval t is calculated. Then, the calculated oxygen intake RVO ₂ is multiplied by the calorie consumption conversion value K to obtain a measurement interval t.
The calorie consumption C (kcal) consumed during the measurement interval t is calculated by dividing by.
Here, since the calorie consumption when 1 liter of oxygen is used corresponds to about 5 kcal, the calorie consumption conversion value K has a value of about (5/1000) (a value that also converts kcal to ml). Applied.

Here, the resting oxygen intake VO ₂ rest is calculated from the basal metabolic rate, specifically,
It is calculated by substituting body weight W, height T and age AGE into the following formula (2) or (3) defined for each gender.
<For men>
VO ₂ rest = (66.47+ (13.75 × W) + (5.0 × T) − (6.76 ×)
AGE) / 24/60/5 / W × 1000 (2)
<For women>
VO ₂ rest = (66.51+ (9.56 × W) + (1.85 × T) − (4.68 ×
AGE) / 24/60/5 / W × 1000 (3)
In addition, (/ 24/60/5 × 1000) in the above formula is a value converted into a resting oxygen intake amount VO ₂ rest per minute.

In addition, the maximum oxygen intake VO ₂ max and the resting pulse rate HRrest were created for each gender and table data in which the age AGE and the maximum oxygen intake VO ₂ max were associated with each other.
Each set value (corresponding to a default value) is set by referring to the table data in which the age AGE is associated with the resting pulse rate HRrest. The maximum pulse rate HRmax is set to a set value (corresponding to a default value) from the age AGE using the following equation (4).
HRmax = 220−AGE (4)
In addition, you may comprise so that a user may set these default setting values.

In this biological information processing apparatus 1, when an instruction to measure calorie consumption is input through any of the button switches 111 to 117, the MPU 308 starts measuring the pulse rate HR and measures the measured pulse rate HR. To calculate calories burned. That is, the MPU 308 functions as a calorie consumption calculation unit that calculates the calorie consumption.
When measuring the pulse rate HR, the MPU 308 outputs a control signal to the A / D conversion circuit 305, performs A / D conversion of the pulse wave amplification signal, generates pulse wave data, and outputs the pulse wave data. M
The data is output to the PU 308. Then, the MPU 308, every measurement interval t (4 seconds in this example)
Perform frequency analysis on pulse wave data by fast Fourier transform processing, extract pulse wave components,
The pulse rate HR is calculated from the frequency of the pulse wave component. When calculating the pulse rate HR, body motion data is also calculated at the same time. By excluding the body motion frequency calculated from the body motion data from the pulse wave component candidates during the frequency analysis described above, A situation where a body motion component is erroneously detected as a pulse wave component is avoided.
Also, the user's body motion level is calculated from the body motion data, and if the body motion level is above a certain level, strong noise is generated by the user's body motion, and a reliable pulse rate cannot be calculated. Alternatively, the calculation of the pulse rate HR may be stopped. According to this configuration, a highly reliable pulse rate HR can be calculated. The measured pulse rate HR is stored in the RAM 30.
9 are sequentially stored and held as history information.

When measurement of the pulse rate HR is started as described above, the MPU 308 measures the measured pulse rate HR.
From this, the user's oxygen intake RVO ₂ is calculated, and the calorie consumption C is calculated from the oxygen intake RVO _2.
The calorie consumption calculation process for calculating the value is started.
By the way, as described above, when calculating calorie consumption C, resting pulse rate HRrest is used.
And the maximum pulse rate HRmax is used. Since the set value (default value) of these resting pulse rate HRrest and maximum pulse rate HRmax is a value uniquely determined from the age AGE or the like, the user's actual resting pulse rate HRrest and maximum pulse rate HRmax May be different.
Therefore, in this embodiment, when the pulse rate HR is measured, the MPU 308 determines whether or not the pulse rate HR can be estimated to be one of the user's resting pulse rate HRrest and the maximum pulse rate HRmax. If it can be estimated that either
Each set value corresponding to the resting pulse rate HRrest or the maximum pulse rate HRmax stored in the RAM 309 is updated.

Hereinafter, the setting value update process of the resting pulse rate HRrest and the maximum pulse rate HRmax will be described while calculating the flowchart shown in FIG.
First, the MPU 308 determines whether or not the pulse rate HR is measured (step S1).
). Here, the case where the pulse rate HR is not measured is a case where the pulse rate within the appropriate range is not measured even though the pulse rate HR is measured, or because the body motion level is high. This is a case where the calculation of the pulse rate HR is stopped.

When the pulse rate HR is measured (step S1: YES), the MPU 308 first measured to determine whether the measured pulse rate HR satisfies a condition that can be estimated as a resting pulse rate HRrest. The pulse rate HR is the resting pulse rate HRre stored in the RAM 309.
It is determined whether or not the state is less than the set value of st (including the default value) (step S2). More specifically, in this step S2, it is determined whether or not the pulse rate HR continuously falls below the set value of the resting pulse rate HRrest for a predetermined period (for example, several seconds), and continues. If not, the process proceeds to the subsequent step S3.
In step S3, the MPU 308 determines the level of body movement data (hereinafter referred to as body movement level).
However, it is determined whether it is less than the threshold value with which a user can determine with a rest state. Here, when it is less than the threshold value (step S3: YES), that is, when the body motion level is low, the set value of the resting pulse rate HRrest stored in the RAM 309 is set to the value of the measured pulse rate HR. Update (step S4).

Thus, in this embodiment, when the pulse rate HR is measured, the pulse rate HR is continuously lower than the set value of the resting pulse rate HRrest, and the user is in a resting state. When satisfied, the set value of the resting pulse rate HRrest is updated to the value of the pulse rate HR. For this reason, the set value of the resting pulse rate HRrest uniquely set based on the age AGE or the like can be reset to a value closer to the actual resting pulse rate of the user or the actual resting pulse rate.
Subsequently, the MPU 308 calculates the calorie consumption C based on the measured pulse rate HR (step S5), calculates the calorie consumption C, and shifts to the process of step S1 at a predetermined interruption cycle. The calculation process of the calorie consumption C is repeated. The calorie consumption C thus calculated is cumulatively added by the MPU 308, and the calorie consumption consumed by the user since the start of calorie consumption measurement (hereinafter referred to as “cumulative calorie consumption”) is calculated and displayed on the liquid crystal display device 13. To the user.

On the other hand, when the body movement level is equal to or higher than the threshold (step S3: NO), the MPU 308
Instead of the pulse rate HR measured this time, the calorie consumption C is calculated based on the pulse rate HR measured immediately before (steps S11 and S5). That is, when the body motion level is equal to or higher than the threshold value, it is predicted that the user is exercising. Therefore, when a pulse rate HR equal to or lower than the set value of the resting pulse rate HRrest is measured in such an exercise state, the pulse The number HR is not used in the calculation of the calorie consumption C, but the calorie consumption C is calculated from the pulse rate HR immediately before that is more reliable.

Further, the measured pulse rate HR is the resting pulse rate HRres stored in the RAM 309.
If it is equal to or greater than the set value of t (step S2: NO), the MPU 308 determines whether or not the measured pulse rate HR satisfies a condition that can be estimated as the maximum pulse rate HRmax.
It is determined whether or not the set value of the maximum pulse rate HRmax stored in 09 has been exceeded (step S6). More specifically, in this step S6, the pulse rate HR is a predetermined period (
For example, it is determined whether or not the set value of the maximum pulse rate HRmax is continuously exceeded for several seconds), and when it is continuously exceeded, the process proceeds to the subsequent step S7.
In step S7, the MPU 308 updates the set value of the maximum pulse rate HRmax to the value of the pulse rate HR, and then proceeds to the process of step S5 to calculate the calorie consumption C. That is, in the present embodiment, when the measured pulse rate HR continues to exceed the set value of the maximum pulse rate HRmax, the pulse rate HR is a value closer to the user's actual maximum pulse rate or the maximum pulse rate. Assuming that there is, it is possible to update the set value of the maximum pulse rate HRmax to a value reflecting the individual difference of the user. As a result, the calorie consumption C that reflects individual differences among users can be calculated.

If the measured pulse rate HR is not less than the set value of the resting pulse rate HRrest set in the RAM 309 and not more than the set value of the maximum pulse rate HRmax (step S).
6: NO), the MPU 308 proceeds to the process of step S5 without performing the setting value update process, and calculates the calorie consumption C.
Further, in this biological information processing apparatus 1, when the pulse rate HR cannot be measured (step S1: NO), the MPU 308 is detecting a body motion of a predetermined level or more and the pulse cannot be continuously taken. It is determined whether or not it is immediately after (in this example, it could not be continuously taken three times or more) (step S10). Then, when body motion of a predetermined level or more is being detected and immediately after a pulse cannot be continuously taken (step S10: YES), the MPU 308 determines the pulse rate HR measured immediately before.
The calorie consumption C is calculated based on (Steps S11 and S5). On the other hand, when body motion of a predetermined level or more is being detected, or when at least one of the conditions immediately after the pulse cannot be continuously taken is not satisfied (step S10: NO), the reliability of the pulse rate HR measured in the past MPU 308 sets the calorie consumption C to 0 (zero) (step S12).
Thereby, for example, when the biological information processing apparatus 1 is removed, or when the biological information processing apparatus 1 is attached but the pulse cannot be measured for a long time, the calorie consumption C is 0.
It is calculated as (zero) and is not added to the cumulative calorie consumption calculated so far.

As described above, in the present embodiment, when the measured pulse rate HR continuously falls below the set value of the resting pulse rate HRrest and the user is in a resting state, Since the set value of the resting pulse rate HRrest is updated to the measured pulse rate HR,
A resting pulse rate HRrest reflecting individual differences of the user can be set rather than a resting pulse rate HRrest uniquely set from the age AGE or the like. In the present embodiment, when the measured pulse rate HR satisfies the condition that the set value of the maximum pulse rate HRmax is continuously exceeded, the set value of the maximum pulse rate HRmax is updated to the measured pulse rate HR. Therefore, the maximum pulse rate HRmax reflecting the individual difference of the user can be set rather than the maximum pulse rate HRmax uniquely set from the age AGE or the like. Accordingly, the calorie consumption C can be calculated with high accuracy reflecting individual differences among users.

In addition, embodiment mentioned above shows the one aspect | mode of this invention to the last, and a deformation | transformation and application are arbitrarily possible within the scope of the present invention. For example, in the above-described embodiment, the condition that the measured pulse rate HR can be estimated to be a resting pulse rate is the pulse rate HR that continues to be a resting pulse rate HRr.
Although the case where the condition that the set value of est is lower and the user is in a resting state is exemplified, the present invention is not limited to this. For example, the pulse rate HR continues to be a resting pulse rate. Various conditions may be applied, such as only being lower than the set value of HRrest.
In the above-described embodiment, the conditions under which the measured pulse rate HR can be estimated as the maximum pulse rate are as follows:
Although the case where the pulse rate HR is determined to continuously exceed the set value of the maximum pulse rate HRmax is illustrated, the present invention is not limited to this, and other conditions may be applied.

In the above-described embodiment, the resting pulse rate HRrest and the maximum pulse rate HRma.
When the set value of x is updated, a value change process for gradually approaching the updated value from the value before the update may be performed. For example, when the set value of the resting pulse rate HRrest is changed from 70 to 65, the set value is changed to a value obtained by subtracting 1 from 70 at a predetermined time interval. You may make it fix to. Also, set the maximum pulse rate HRmax to 1
When the value is changed from 80 to 185, the set value may be changed to a value obtained by adding 1 to 180 at a predetermined time interval, and when the value is changed to 185, the value may be fixed. According to this configuration, a situation in which the set values of the resting pulse rate HRrest and the maximum pulse rate HRmax change greatly in a short time is avoided, and the calorie consumption C greatly fluctuates under a condition where the pulse rate HR is substantially constant. This avoids the situation.

In the above-described embodiment, the case where it is determined whether or not the measured pulse rate HR is a resting pulse rate when a measurement instruction for calorie consumption is input has been described. When an instruction input unit (button switch or the like) for inputting a measurement instruction for a time pulse rate is provided, and when an instruction for measurement of a resting pulse rate is input via this instruction input unit, the MPU 308
Start measuring pulse rate HR and determine whether the pulse rate HR is a resting pulse rate;
When it is determined that the pulse rate is at rest, the set value of the pulse rate at rest HRrest may be updated. Thus, the user himself / herself can measure the pulse rate HR when the user is in a resting state by instructing the measurement of the resting pulse rate, and the setting value of the resting pulse rate is set to a more reliable one. Can be redone.

In the above-described embodiment, the example in which the present invention is applied to the wristwatch-type biological information processing apparatus 1 that is used while being worn on the wrist L of the user has been described. The present invention is not limited to 1, and can be widely applied to devices (including devices that measure heart rate) that are used by being worn on the user's body.
Further, for example, in the above-described embodiment, a case where a control program for controlling the biological information processing apparatus 1 is stored in the ROM 310 in advance has been described. However, control is performed on various recording media such as a magnetic disk, an optical disk, and a memory card. It is also possible to store the program for use in advance, read it from these recording media, and install it. It is also possible to provide a communication interface, download the control program via a communication network such as the Internet or LAN, install and execute the program.

It is a figure which shows the structure of the biological information processing apparatus which concerns on this embodiment. It is a top view of the apparatus main body of a biological information processing apparatus. It is the side view which looked at the biological information processor from the direction of 3 o'clock in a wristwatch. It is a figure which shows the pulse sensor of a biological information processing apparatus. It is sectional drawing of the pulse sensor of a biological information processing apparatus. It is a block diagram which shows the functional structure of a biological information processing apparatus. It is a flowchart with which it uses for description of the setting value update process of a resting pulse rate and a maximum pulse rate.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Biological information processing apparatus, 13 ... Liquid crystal display device (display part), 30 ... Pulse sensor (pulse measurement part), 90 ... Body motion sensor (body motion detection part), 308 ... MPU (calorie consumption calculation part, determination part) , 309... RAM (storage unit).

Claims (8)

A pulse measurement unit for measuring the user's pulse rate;
A storage unit that stores setting values of the user's resting pulse rate and maximum pulse rate;
A calorie consumption calculation unit that calculates a calorie consumption amount based on the pulse rate measured by the pulse measurement unit, and each setting value of the resting pulse rate and the maximum pulse rate stored in the storage unit;
A determination unit that determines whether or not the pulse rate measured by the pulse measurement unit satisfies a predetermined condition that can be estimated as a resting pulse rate;
When the determination unit determines that the condition is satisfied, the set value of the resting pulse rate stored in the storage unit is updated to a pulse rate that satisfies the condition. The biological information processing according to claim 1, wherein the predetermined condition is that the measured pulse rate continuously falls below a set value of a resting pulse rate stored in the storage unit. apparatus. A body motion detection unit for detecting the body motion level of the user;
The predetermined condition includes that the body motion level detected by the body motion detection unit is a pulse rate measured when the body motion level is a level that can be determined as a resting state. Biological information processing device. When the set value of the resting pulse rate stored in the storage unit is updated, the value of the set value is gradually changed to a pulse rate that satisfies the condition, and then the condition is satisfied. The biological information processing apparatus according to claim 1, wherein the biological information processing apparatus is updated to a pulse rate. The pulse measurement unit has an instruction input unit for inputting a measurement instruction of a resting pulse rate,
The determination unit determines whether or not the pulse rate measured by the pulse measurement unit satisfies a predetermined condition that can be estimated as a resting pulse rate when an instruction to measure a resting pulse rate is input. The biological information processing apparatus according to any one of claims 1 to 4, wherein the biological information processing apparatus is characterized. The determination unit determines whether the pulse rate measured by the pulse measurement unit satisfies other predetermined conditions that can be estimated as the maximum pulse rate,
When the determination unit determines that the other condition is satisfied, the set value of the maximum pulse rate stored in the storage unit is updated to a pulse rate that satisfies the other condition. 1
The biological information processing apparatus according to claim 1. The biological information processing apparatus according to claim 6, wherein the other condition is that the measured pulse rate continuously exceeds the set value of the maximum pulse rate stored in the storage unit. A pulse measurement process to measure the user's pulse rate;
A calorie consumption calculation process for calculating calorie consumption based on the measured pulse rate and each setting value of the resting pulse rate and the maximum pulse rate stored in the storage unit,
It is determined whether the measured pulse rate satisfies a predetermined condition that can be estimated as a resting pulse rate, and when it is determined that the condition is satisfied, the setting of the resting pulse rate stored in the storage unit A control method for a biological information processing apparatus, wherein the value is updated to a pulse rate that satisfies the above condition.

Images