JPWO2008081553A1 - Portable device, exercise intensity calculation method, stride correction method, information device, and program - Google Patents

Abstract

In the present invention, the number of steps of the user within a preset unit time is counted, and the average step length within the unit time is calculated using the counted number of steps. The walking speed of the user is calculated using the calculated average step length and the counted number of steps, and the exercise intensity of the user in unit time is calculated from the calculation result.

Description

  The present invention relates to a technique for calculating exercise intensity in a unit time from the number of steps of a user in unit time.

  In recent years, the work of moving the body has decreased extremely. Due to the development of transportation facilities, the time to walk for traveling has been reduced. On the other hand, the calorie intake tends to increase. For these reasons, it is becoming increasingly difficult to live a daily life that meets the exercise requirements necessary for maintaining health.

  A representative example of the exercise requirement is the number of steps per day. Various pedometers are on the market because small, inexpensive, and highly reliable acceleration sensors can be obtained. Such pedometers are used for sick rehabilitation in addition to their use for relieving lack of exercise. Currently, in addition to the number of steps, an apparatus that provides the following information has been devised.

  Patent Document 1 describes an apparatus for calculating exercise intensity. In the conventional apparatus, the running distance is obtained by multiplying the stride by the running pitch, and the exercise intensity per unit time is calculated by multiplying the running distance by the weight.

  Patent Document 2 describes an apparatus for correcting a user's stride. In this conventional apparatus, by measuring the stride time during walking, the step length for each step is calculated using the number of steps, the average stride time, and the total distance.

  Patent Document 3 describes a device that corrects a user's stride and calculates calorie consumption as walking-related information. In this conventional apparatus, the step length of the subject is corrected using the following equation. In the following formula, a and b are both coefficients.

Step length = a × height × walking pitch + b
The above formula qualitatively indicates that the step length increases as the height increases and the pitch increases. Calorie consumption is calculated using the user's weight, stride, and walking pitch. Thereby, the calorie consumption calculated is proportional to the walking distance and the weight.

  The calorie consumption depends on the walking distance and weight, but is not necessarily proportional to the walking distance. This is because the calorie consumption per unit time tends to increase with intense exercise. For this reason, the accuracy of the calorie consumption calculated is low. For the same reason, the exercise intensity is also low in accuracy.

  Calories burned depend on exercise intensity and calories are consumed even in an activity state that is considered not to be exercised. For this reason, recently, the recommended exercise intensity has been presented. As the exercise intensity, those using METs as a unit are increasingly used. For this reason, it is considered important to be able to confirm whether the user is exercising with the recommended exercise intensity.

The MET is obtained by dividing the amount of energy consumed in physical activity by the resting metabolic rate (corresponding to about 3.5 ml / kg / min in terms of oxygen intake). METs / hour, which is a unit indicating the amount of exercise, is obtained by multiplying the MET value by the exercise time. When the consumption of 1 liter of oxygen is converted to the energy consumption of 5.0 kcal, 1.0 METs · hour is 74 kcal for a person weighing 70 kg and 63 kcal for a person weighing 60 kg. In this way, in a person with a standard physique, 1.0METs · hour is almost the same energy consumption as body weight. For this reason, METs / hours are frequently used to reduce physical activity.
WO97 / 37588 “Exercise prescription support device” JP 2001-170029 A "Exercise state measuring device and exercise state measuring method" JP 2002-31754 A "Pedometer"

An object of this invention is to provide the portable apparatus which can confirm easily whether the walk of the recommended exercise intensity is performed.
The portable device according to the first aspect of the present invention is assumed to be carried by a user, and includes a step count counting means for counting the number of steps of the user within a preset unit time, and a step count counted by the step count counting means. Using the stride calculation means for calculating the average stride within the unit time, the average stride calculated by the stride calculation means, and the number of steps counted by the step count counting means, the user's walking speed is calculated and the calculated Exercise intensity calculating means for calculating the exercise intensity of the user in unit time from the walking speed.

  The portable device according to the second aspect of the present invention uses at least one of the user's exercise amount and calorie consumption per unit time using the exercise intensity calculated by the exercise intensity calculating means in addition to the configuration of the first aspect. Is further provided with an exercise result calculation means for calculating as an exercise result.

  The exercise intensity calculation method of the present invention is a method for calculating an exercise intensity corresponding to a user's walk within a preset unit time, which counts the number of steps of the user within the unit time, and calculates the counted number of steps. And determining a stride coefficient for correcting the stride to be used as a reference by the user, and correcting the stride to be the reference by multiplying the step to be the reference by the determined stride coefficient. A stride is calculated, the user's walking speed is calculated using the calculated corrected stride and the counted number of steps, and the user's exercise intensity in the unit time is calculated from the calculated walking speed.

  The program of the present invention is acquired by a step acquisition function and a step acquisition function for acquiring a user's step count counted per preset unit time in a computer that can be mounted on a portable device assumed to be carried by the user. Using the number of steps, calculate the walking speed of the user using the stride calculation function for calculating the average stride within the unit time, the average stride calculated by the stride calculation function, and the number of steps acquired by the step count acquisition function, An exercise intensity calculation function for calculating the exercise intensity of the user in unit time from the calculated walking speed is realized.

  In the present invention, the number of steps of a user within a unit time is counted, and the step length to be used as a reference for the user is corrected using the counted number of steps, for example, a step coefficient for correcting the step length to be used as the reference is determined. Then, by multiplying the step length to be used as the reference by the determined step coefficient, a corrected step length that corrects the step length to be used as the reference is calculated, and the calculated step length and the counted number of steps are used by the user. The walking speed is calculated, and the exercise intensity of the user in unit time is calculated from the calculated walking speed.

  In walking, the faster the walking, the greater the load on the body. Therefore, the exercise intensity reflecting the magnitude of the exercise load can be calculated from the walking intensity. Thereby, the user can grasp | ascertain the exercise intensity of own walk more appropriately. When other information such as calorie consumption or amount of exercise is obtained using the exercise intensity, exercise by walking can be evaluated at various angles. When the stride is corrected by the number of steps, the exercise intensity can be calculated more accurately. When stride correction is performed from the number of steps per unit time, the exercise intensity can be calculated more accurately while suppressing the amount of calculation.

It is a figure which shows the function structure of the portable apparatus by this embodiment. It is a figure which shows the example of the content of a stride coefficient calculation table. It is a figure which shows the example of the content of the exercise intensity calculation table. It is a figure explaining the unit time used as the object of accumulation by walk interruption time. It is a figure which shows the example of the content of the walk actually performed during 5 minutes. It is a flowchart of a walk process. It is a flowchart of walking distance calculation processing. It is a flowchart of a calorie consumption calculation process. It is a figure which shows the hardware constitutions of the mobile telephone which is a portable apparatus by this embodiment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram illustrating a functional configuration of the mobile device according to the present embodiment. As shown in FIG. 1, the portable device 1 includes a data storage unit 3, a data storage / acquisition processing unit 4, a step count detection unit 5, a stride correction processing unit 6, a walking distance calculation processing unit 7, an exercise intensity calculation unit 8, And a calorie consumption calculation unit 9.

The data storage unit 3 is nonvolatile. The data storage / acquisition processing unit 4 exchanges data between the data storage unit 3 and each of the units 6 to 9 and 11.
The step detection unit 5 determines, for example, an acceleration sensor that can detect accelerations of two or more axes, an AD converter (ADC) that performs AD conversion of a signal from the sensor, and counts the number of steps from a digitized signal. A processing unit is provided. The number of steps is counted every preset unit time and is output to the stride correction processing unit 6. In this embodiment, the unit time is 1 minute.

  The stride correction processing unit 6 corrects the reference stride (reference stride) based on the number of steps input from the step count detection unit 5, and corrects the average stride (average stride) of the user when walking with the step count. Calculate as a value. The calculation of the average stride is performed using a stride coefficient calculation table shown in FIG. The stride factor calculation table defines the relationship between the number of steps and the stride factor. When the number of steps shown in FIG. 2 indicates an upper limit value corresponding to each step coefficient, the step coefficient is 1.00 when the number of steps is 68 or less, and the step coefficient of .1 when the number of steps is 69 to 80. 02 corresponds. Therefore, the stride step count processing unit 6 obtains a stride coefficient corresponding to the detected step count from the stride coefficient calculation table. Accordingly, when the average stride W ′, the reference stride W, and the stride coefficient calculated from the stride coefficient calculation table Wc, the average stride W ′ is calculated as follows.

W ′ [cm] = W [cm] × Wc (1)
Note that the step coefficient Wc may be used for calculation based on the number of steps and the step number coefficient shown in FIG. 2 and obtained by interpolation corresponding to the actual number of steps. Further, the reference stride is input by the user. The reference stride is, for example, a stride during normal walking. The reference stride input by the user is stored in the data storage unit 3.

  As described above, in this embodiment, the average stride is obtained from the number of steps per unit time. Compared with the case where the time is measured for each step or the step length is calculated as in the conventional devices described in Patent Documents 1 to 3, the calculation amount (load) is further suppressed and the calculation is suppressed. This is to maintain the accuracy of the stride to be performed. By further reducing the amount of calculation, power consumption can be further suppressed.

  The walking distance calculation processing unit 7 receives the average stride W ′ and the number of steps from the stride correction processing unit 6 and calculates the walking distance per unit time (here 1 minute). The calculation of the walking distance is performed by the following formula, where N is the number of steps.

Walking distance [cm] = N x W '[cm] (2)
Further, in order to calculate the total walking distance in a preset time range, the walking distance obtained by the calculation is integrated. The total of walking distance is performed by adding the walking distance of this unit time to the total walking distance obtained so far. The total walking distance is stored in the data storage unit 3. The time range is, for example, one day, and the total walking distance is integrated in units of one day. Note that the time range can be, for example, one week.

  The walking distance per unit time corresponds to the walking speed per unit time. The exercise intensity calculation unit 8 receives the average stride W ′ and the number of steps N from the walking distance calculation processing unit 7, and calculates the walking speed per unit time by the following formula.

Walking speed [m / min] = N x W '[cm] ÷ 100 (3)
After calculating the walking speed, the exercise intensity (METs) corresponding to the walking speed is determined with reference to the exercise intensity calculation table shown in FIG. The exercise intensity calculation table defines the relationship between the walking speed and the corresponding exercise intensity, and an upper limit value of the walking speed with respect to the exercise intensity is set. The exercise intensity is determined by identifying the walking speed in the exercise intensity calculation table that is closest to the calculated walking speed and extracting the exercise intensity defined by the specified walking speed. The exercise intensity thus determined is stored in the data storage unit 3 and is output to the calorie consumption calculation unit 9.

  The calorie consumption calculation unit 9 calculates the calorie consumption per unit time using the exercise intensity input from the exercise intensity calculation unit 8 as follows. In order to calculate the total calories consumed in the above time range, the calories consumed are calculated. The total calorie consumption is calculated by adding the calorie consumption for the current unit time to the total calorie consumption obtained so far. The total calorie consumption (data) is stored in the data storage unit 3.

Calories burned [kcal] = exercise intensity [METs] x O x body weight [kg] x C x T (4)
Where O: oxygen consumption at rest (fixed value: eg 3.5 [ml / (kg · min)]),
C: amount of heat when oxygen 1 [ml] is consumed (fixed value: for example, 0.005 [kcal / ml]),
T: walking time (here, a value corresponding to one minute which is a unit time),
It is. Like the standard stride W, the weight is data input by the user and is stored in the data storage unit 3.

The calorie consumption calculating unit 9 calculates the amount of exercise in addition to the calorie consumption. The momentum is calculated by the following equation.
Momentum [METs / hour] = Exercise intensity [METs] / 60 (5)
In order to calculate the total momentum in a certain time range, the momentum obtained by the calculation is integrated. The amount of exercise is accumulated by adding the amount of exercise of this unit time to the total amount of exercise obtained so far. The total amount of exercise is stored in the data storage unit 3. Hereinafter, description will be made assuming that the time range is one day.

  The calculation results by the above units 6 to 9 are stored in the data storage unit 3 via the data storage / acquisition processing unit 4. The notification processing unit 11 performs processing for acquiring and notifying a necessary calculation result from the data storage unit 3 via the data storage / acquisition processing unit 4 in response to a user instruction, for example. The notification is performed using a display device (not shown).

The calorie consumption calculation unit 9 integrates the calories consumed and the amount of exercise according to the following logic.
When walking is started after a gait interruption of 1.4 minutes or longer, calories consumed and the amount of exercise corresponding to the first minute of walking are not accumulated (changes in oxygen intake are transient in a walking exercise of less than 1 minute) )
2. If the exercise intensity is not greater than or equal to a preset threshold value, calories burned and exercise amount are not accumulated (if the exercise intensity is above a certain level, it is considered that effective exercise is being performed).
3. The first one-minute walk from the start of walking does not accumulate as calories and exercise amount due to normal walking (reason: In a walking exercise of less than one minute, the change in oxygen intake is in a transient state (about 30-40% of the total change amount) )
4). If you are not walking, including when you stop walking for less than 4 minutes after walking for more than 1 minute, do not count as calories or exercise.
5). After “interruption of walking within 4 minutes after walking for 1 minute or longer”, if the walking time is 1 minute or longer, it is integrated as calories and exercise amount from normal walking.
6). The criterion for determining walking interruption is “whether or not the number of steps per minute is zero”.

  FIG. 4 is a diagram for explaining the time to be accumulated such as calories consumed. The walking flag on the vertical axis indicates whether or not walking has been performed as effective exercise, H indicates that walking has been performed as effective exercise, and L indicates such walking. It shows no. Whether or not walking, which can be said to be an effective exercise, has been determined based on, for example, the above exercise intensity. According to the logic 1, the period corresponding to one unit time after the interruption of walking is not subject to integration, but only the time shown by hatching in FIG. . As a result, only the time during which walking, which is an effective exercise, is performed according to the walking situation is targeted for integration. The same applies to logic 2. In the present embodiment, the age is input in order to set an appropriate threshold according to the user. The input age is stored in the data storage unit 3.

  FIG. 5 is a diagram showing an example of the contents of walking actually performed for 5 minutes. Here, when walking with the contents shown in FIG. 5, the calculation results obtained by the stride correction processing unit 6, the walking distance calculation processing unit 7, the exercise intensity calculation unit 8, and the calorie consumption calculation unit 9 are specifically described. explain. In the example of FIG. 5, it is assumed that the conditions of logic 1 and logic 2 are satisfied. The calculation results are based on the assumption that the user's reference stride W is 50 [cm] and the weight is 60 [kg]. As shown in FIG. 5, "0-1 [min]", "1-2 [min]", "2-3 [min]", "3-4 [min]", "4-5 [min]" The number of steps of the user (pedestrian) per unit time is 70 steps, 100 steps, 130 steps, 70 steps, and 140 steps, respectively.

  If the stride correction processing unit 6 does not perform interpolation of the stride count and uses a stride coefficient corresponding to the closest step count in the table shown in FIG. 2 for calculation, the average stride per unit time, which is the correction result of the reference stride, is It becomes as follows.

0-1 [min]: 50 [cm] × 1.00 = 50.0 [cm]
1-2 [min]: 50 [cm] × 1.09 = 54.5 [cm]
2-3 [min]: 50 [cm] × 1.46 = 73.0 [cm]
3-4 [min]: 50 [cm] × 1.00 = 50.0 [cm]
4-5 [min]: 50 [cm] × 1.51 = 75.5 [cm]
When the exercise intensity calculation unit 8 calculates the average speed (walking speed, unit [m / min]) per unit time using the average stride output by the stride correction processing unit 6, the following is obtained.

0-1 [min]: 70 [steps] × 50.0 [cm] ÷ 100 = 35.0 [m / min]
1-2 [min]: 100 [steps] x 54.5 [cm] ÷ 100 = 54.5 [m / min]
2-3 [min]: 130 [steps] × 73.0 [cm] ÷ 100 = 94.9 [m / min]
3-4 [min]: 70 [steps] x 50.0 [cm] ÷ 100 = 35.0 [m / min]
4-5 [min]: 140 [steps] × 75.5 [cm] ÷ 100 = 105.7 [m / min]
When the exercise intensity calculation unit 8 calculates the exercise intensity [METs] based on the walking speed [m / min] for one minute, the following is obtained.

0-1 [min]: 2.2 [METs]
1-2 [min]: 2.4 [METs]
2-3 [min]: 3.7 [METs]
3-4 [min]: 2.2 [METs]
4-5 [min]: 5.2 [METs]
When the calorie consumption calculation unit 9 calculates the calorie consumption [kcal] for 1 minute, it is as follows.
0-1 [min]: 2.2 [METs] × 3.5 [ml / (kg · min)] × 60 [kg] × 0.005 [kcal / ml] × 1 [min] = 2.310 [ kcal]
1-2 [min]: 2.4 [METs] × 3.5 [ml / (kg · min)] × 60 [kg] × 0.005 [kcal / ml] × 1 [min] = 2.520 [ kcal]
2-3 [min]: 3.7 [METs] × 3.5 [ml / (kg · min)] × 60 [kg] × 0.005 [kcal / ml] × 1 [min] = 3.885 [ kcal]
3-4 [min]: 2.2 [METs] × 3.5 [ml / (kg · min)] × 60 [kg] × 0.005 [kcal / ml] × 1 [min] = 2.310 [ kcal]
4 to 5 [min]: 5.2 [METs] × 3.5 [ml / (kg · min)] × 60 [kg] × 0.005 [kcal / ml] × 1 [min] = 5.460 [min] kcal]

  Moreover, in the calorie consumption calculation part 9, when the calorie consumption [kcal] for 5 minutes from 0 to 5 [min] is integrated, 16.485 [kcal] is obtained. In addition, if calorie consumption is integrated without correcting the stride, 13.440 [kcal] is obtained. As a result of not performing the stride correction, a value of about 20% smaller is calculated, so it can be understood that the stride correction greatly affects the final calculation result.

  The portable device 1 according to the present embodiment assumes an example in which the units 3 to 9 and 10 shown in FIG. The reason why the configuration according to the present embodiment is applied to a mobile phone is that the mobile phone is always carried by a user. By applying this embodiment to such a mobile phone, the user can check the result of exercise by walking (including running here) as needed. When the user always carries the mobile phone, the calorie consumption per day or the amount of exercise can be accurately calculated. The mobile device 1 may be other than a mobile phone. Specifically, it may be realized as a dedicated device for counting the number of steps and calculating the exercise intensity (or the exercise amount or the calorie consumption). It may be a player, a camera, a game machine, or the like.

FIG. 9 is a diagram illustrating a hardware configuration of the mobile phone that is the mobile device according to the present embodiment. For convenience, FIG. 9 shows only a portion corresponding to the functional configuration shown in FIG.
As shown in FIG. 9, the cellular phone includes an acceleration sensor 31, an ADC 32, a CPU 33, a Sab-LCD 34, a Main-LCD 35, a nonvolatile memory 36, and an operation unit 37.

  The acceleration sensor 31 can detect an acceleration of at least two axes. For each axis, a signal representing the acceleration detected on that axis is output. The ADC 32 performs AD conversion of the signal from the acceleration sensor 31 for each axis, and outputs a digitized signal to the CPU 33.

  The nonvolatile memory 36 is, for example, a flash memory, and various programs executed by the CPU 33 are stored in the memory 36. The functions of the units 4, 6 to 9, and 11 shown in FIG. 1 are realized by executing a program in which functions for realizing them are installed. Hereinafter, the program will be referred to as a “walking exercise program”. The function of analyzing the signal from the ADC 32, detecting walking and counting the number of steps is stored in another program. The program is hereinafter referred to as a “walking detection program”. The CPU 33 executes the walking detection program at the sampling interval of the ADC 32 and the walking motion program at the unit time interval. The number of steps may be detected by connecting a processing device (such as an inexpensive CPU or DSP) having a processing function to the ADC 32 and causing the processing device to perform the detection.

  The Sab-LCD 34 and the Main-LCD 35 are used for notification of calculation results. What is used for the notification is selected according to the state of the mobile phone, for example. The operation unit 37 includes a plurality of keys and a detection circuit that detects operations on the keys. The CPU 33 is notified of the key whose operation is detected by the detection circuit and the operation content. The reference stride, weight, and age are input via the operation unit 37. When the input is not performed, a default value set in advance in the mobile phone is adopted.

  The data storage unit 3 in FIG. 1 corresponds to the nonvolatile memory 36 in FIG. The functions of the units 4 and 6 to 9 are realized by the CPU 33 and the nonvolatile memory 36. The notification processing unit 11 is realized by the CPU 3, the nonvolatile memory 26, and the two LCDs 34 and 35. The step count detection unit 5 is realized by the acceleration sensor 31, the ADC 32, the CPU 33, and the nonvolatile memory 36. The tables shown in FIGS. 2 and 3 exist on the nonvolatile memory 36 in a form stored in, for example, a walking exercise program.

  Since the walking exercise program only needs to be executable by the CPU 33, it may be distributed in a storage medium accessible by a mobile device such as a mobile phone. Or you may enable it to acquire from an external apparatus via a communication network. Thereby, the recording medium may be accessible by an external device.

  Next, referring to FIG. 6 to FIG. 8, it is executed to realize the function of each unit (step length correction processing unit 6, walking distance calculation processing unit 7, exercise intensity acquisition unit 8, calorie consumption calculation unit 9) in FIG. 1. The processing to be performed will be described in detail. The processing is realized by the CPU 33 executing the walking exercise program stored in the nonvolatile memory 36. The execution is controlled by, for example, an interrupt signal output by the timer at unit time intervals.

  FIG. 6 is a flowchart of the walking process within the unit time. First, the walking process will be described in detail with reference to FIG. The walking process is realized by the CPU 33 executing a walking exercise program. In addition, the walk process by FIG. 6 is repeated for every unit time. This is because the walking process is activated by the interrupt signal output by the timer at unit time intervals.

  First, in step S101, a reference stride, weight, age, and exercise level input in advance by the user are acquired, and a threshold is automatically set from the acquired age or exercise level. When the user does not input such personal data, a default value is acquired. The number of steps counted per unit time is also acquired here. The threshold value to be set is the lower limit of the exercise intensity that should be regarded as an effective exercise. As the threshold, for example, 2.0 [METs] if it is 65 years old or older, 2.5 [METs] if it is 55 years old or older and less than 65 years, and if it is 45 years old or older and less than 55 years old. Set 0 [METs] and 3.5 [METs] if under 45 years old. The setting is performed with reference to, for example, a table that defines the correspondence between age and threshold.

  In subsequent step S102, a walking distance calculation process for realizing the functions of the stride correction processing unit 6 and the walking distance calculation processing unit 7 is executed. In the next step S103, a calorie consumption calculation process for realizing the functions of the exercise intensity calculation unit 8 and the calorie consumption calculation unit 9 is executed. Thereafter, the process proceeds to step S104.

  In step S104, the number of steps acquired within the unit time is cleared. In the next step S105, for example, by referring to a hard timer built in the CPU 33, it is determined whether it is time to back up the calculation result, and backup is performed according to the determination result.

  By performing the backup, the user can confirm the total calorie consumption per day and the total exercise amount for a predetermined period. After performing the backup, the total calories burned and the total amount of exercise are each cleared. Thereby, the calculation of the total calorie consumption and the total amount of exercise is performed on a daily basis.

FIG. 7 is a flowchart of the walking distance calculation process executed within the unit time as step S102. Next, the walking distance calculation process will be described in detail with reference to FIG.
First, in step S201, it is determined whether or not the number of steps acquired within a unit time is greater than zero. In the present embodiment, if the number of steps is 1 or more, it is considered that walking has been performed. From this, when the number of steps is larger than 0, it is determined that the user has walked, the determination is Yes, and the process proceeds to step S202. If not, that is, if the number of steps is 0 or less, the determination is no, and the walking distance calculation process ends here.

  In step S202, the stride coefficient calculation table shown in FIG. 2 is referred to using the acquired number of steps within the unit time. In the subsequent step S203, a step coefficient corresponding to the acquired number of steps is acquired from the step coefficient coefficient calculation table according to the reference result of the step coefficient calculation table. In step S204 that moves to the subsequent step, a step correction process for calculating an average step according to equation (1) is executed using the reference step and the step coefficient acquired in step S203. After the execution, the process proceeds to step S205.

  In step S205, the walking distance per unit time (1 minute) is calculated by the equation (2) using the average stride (W ') and the acquired number of steps (N). In the subsequent step S206, the walking distance is integrated. The total of walking distance is calculated by adding the walking distance calculated by the formula (2) to the current value to “current day information_walking distance” which is a variable prepared for calculating the total walking distance of the day. This is done by assigning. After the walking distance is substituted, the walking distance calculation process in the unit time is finished.

FIG. 8 is a flowchart of the calorie consumption calculation process executed as step S103. Finally, the calculation process will be described in detail with reference to FIG.
First, in step S301, it is determined whether or not the number of steps acquired within a unit time is greater than zero. If the number of steps is greater than 0, the determination is yes and the process moves to step S302. If not, that is, if the number of steps is 0 or less, the determination is no and the process proceeds to step S305.

  In step S305, the walking interruption time that is a variable is counted up, that is, incremented. The walking interruption time is counted up using a timer, and the walking interruption time is counted up until it is determined in S301 that the number of steps is 0 or more. That is, the walking interruption time indicates the duration of the state where the number of steps is zero. In a succeeding step S306, it is determined whether or not the value of the walking interruption time is 4 or more. If the walking interruption time is 4 or more, the determination is yes, and a walking interruption state is set in step S307.

  The state during walking interruption is information indicating that the state of the walking interruption time (number of steps = 0) has continued for 4 unit hours or more. Further, “walking state” described later is information indicating a state other than the walking interruption state. Thereby, as a state, any one of the state during a walk and the state during a walk interruption is set. The setting of the state during walking or the state during interruption of walking is performed, for example, by updating the values of variables for state management. That is, it is performed by substituting a value indicating either the walking state or the walking interruption state into the variable.

  Thereafter, the calorie consumption calculation process in the unit time is terminated. On the other hand, if the walking interruption time is less than 4, the determination is no, and the calorie consumption calculation process in the unit time is ended here.

  The walking interruption time is a variable prepared for detecting the above logic 1, that is, a walking interruption of 4 minutes or more. When the walking is interrupted for 4 minutes or more, the first minute after the start of walking is the exercise intensity, etc. Not subject to calculation. The “walking interruption state” is set so that the first minute after the start of walking is excluded from integration. .

  In step S302, it is determined whether a walking state is set. If the walking state is set, the determination is yes and the process proceeds to step S303. Otherwise, in other words, if the walking interruption state is set, the determination is no, the process proceeds to step S304, the state during walking is set as the state at that time, and the calorie consumption in the unit time The calculation process ends. Thereby, when the state in which walking is interrupted is set, the unit time considered to have walked is excluded from the calorie accumulation target once. As a result, when the walking is resumed from a state where the walking is interrupted for four minutes or more, the first one-minute walking is ignored.

  In step S303, the walking interruption time is cleared, that is, the value is set to zero. In a succeeding step S308, it is determined whether or not the acquired number of steps is 30 or more. If the acquired number of steps is less than 30, the determination is no, and the calorie consumption calculation process ends here. If the acquired number of steps is 30 or more, the determination is yes and the process proceeds to step S309. Since the contents of the processing executed in steps S309 to S311 are basically the same as those in steps S202 to S204, the description thereof is omitted. After execution of the process of step S311, the process proceeds to step S312.

  As shown in FIG. 3, the exercise intensity calculation table defines the exercise intensity when the walking speed per unit time is 30 m / min or more. The reason why it is determined in step S302 whether or not the number of steps is 30 or more is to exclude a unit time whose walking speed is clearly less than 30 m / min from the target. That is, if the number of steps per unit time is less than 30, the walking speed is considered to be less than 30 m / min. As a result, when the walking speed is considered to be less than 30 m / min, calculation of exercise intensity or the like is avoided to reduce the load.

  In step S312, the walking speed per unit time is calculated using equation (3) using the acquired number of steps and the average stride (W '). In the next step S313, the exercise intensity calculation table shown in FIG. 3 is referred to using the calculated walking speed, and the exercise intensity is determined in the next step S314. After the exercise intensity is determined, the process proceeds to step S315.

  In step S315, it is determined whether the determined exercise intensity is greater than or equal to the threshold set in step S101. If the determined exercise intensity is greater than or equal to the threshold, the determination is yes and the process moves to step S316. Otherwise, the determination is no, and the calorie consumption calculation process in the unit time is finished here.

  In step S316, the calorie consumption per unit time and the amount of exercise are calculated by the equations (4) and (5) using the determined exercise intensity. In subsequent step S317, the calculated calorie consumption and the amount of exercise are integrated. The total calories burned per day and the total amount of exercise are updated by the integration. After updating the total calorie consumption and the total amount of exercise, after clearing the calorie consumption and the amount of exercise calculated in step S316, the calorie consumption calculation process in the unit time is ended.

  In the present embodiment, METs are calculated as the exercise intensity, but another type of exercise intensity may be calculated as long as the magnitude of the exercise load is reflected. The user may be notified of the exercise intensity, the amount of exercise, or the calorie consumption by, for example, the corresponding activity content, that is, what is expressed by jogging, running, aerobics, swimming, or the like.

Claims (20)

In portable devices that are assumed to be carried by users,
A step counting means for counting the number of steps of the user within the unit time;
A step calculation unit that calculates an average step within the unit time using the number of steps counted by the step counting unit;
The user's walking speed is calculated using the average step length calculated by the stride calculation means and the step counts counted by the step count counting means, and the exercise intensity for calculating the user's exercise intensity in the unit time from the calculated walking speed. A calculation means;
A portable device comprising: The stride calculation means calculates the average stride by correcting a standard stride using the steps counted by the step count counting means.
The portable device according to claim 1. Using the exercise intensity calculated by the exercise intensity calculating means, the exercise result calculating means for calculating at least one of the amount of exercise of the user in the unit time and the calorie consumption as an exercise result;
The mobile device according to claim 1, further comprising: The exercise result calculation means also performs integration of the exercise results calculated in the unit time unit.
The portable device according to claim 3. The exercise result calculation means integrates the exercise results for a unit time when the exercise intensity calculated by the exercise intensity calculation means is equal to or greater than a preset threshold value.
The portable device according to claim 4. The threshold value is changed according to personal data input by the user.
The portable device according to claim 5. The exercise result calculating means determines whether or not the user is walking from the number of steps counted by the step counting means for each unit time, and the unit time determined not to walk is a predetermined number of times or longer In addition, until a predetermined time has elapsed since resumption of walking, the exercise result calculated for the predetermined time is excluded from the exercise result integration target,
The portable device according to claim 4. The mobile device is a mobile phone.
The portable device according to claim 1. A method for calculating a user's exercise intensity within a unit time,
Counting the number of steps of the user within the unit time;
By using the counted number of steps, a step coefficient for correcting the step length to be used as a user's reference is determined, and the step length to be used as the reference is obtained by multiplying the step length to be used as the reference by the determined step coefficient. Calculating a corrected stride corrected for,
Calculating the walking speed of the user using the calculated corrected stride and the counted number of steps;
Calculating the exercise intensity of the user in the unit time from the calculated walking speed;
An exercise intensity calculation method comprising: Using the calculated exercise intensity, calculating the exercise amount of the user in the unit time and at least one of calorie consumption as an exercise result,
The exercise intensity calculation method according to claim 9, further comprising: In addition to integrating the exercise results calculated in the unit time unit,
The exercise intensity calculation method according to claim 10. On the computer,
A step acquisition function for acquiring the number of steps of the user counted per unit time;
A step calculation function that calculates an average step within the unit time using the number of steps acquired by the step acquisition function;
Exercise that calculates the user's walking speed using the average step length calculated by the step length calculation function and the number of steps acquired by the step number acquisition function, and calculates the exercise intensity of the user in the unit time from the calculated walking speed Intensity calculation function,
A program to realize A step correction method for correcting a step during walking,
Counting steps in unit time;
Obtaining a step correction coefficient based on the counted number of steps;
Multiplying the reference stride by the stride correction coefficient to correct the stride;
A step correction method comprising the steps of: In the stride correction method,
Further comprising receiving an input of the reference stride,
The method according to claim 13, wherein the inputted reference stride is multiplied by the stride correction coefficient. In the stride correction method,
The correspondence between the number of steps and the stride correction coefficient is registered in advance,
The step of obtaining the stride correction coefficient searches the registered correspondence relationship based on the counted number of steps to obtain a stride correction coefficient corresponding to the counted number of steps. The described stride correction method. A method for calculating a user's exercise intensity within a unit time,
Counting steps in unit time;
Obtaining a step correction coefficient based on the counted number of steps;
Multiplying a reference stride by the stride correction coefficient to calculate a corrected stride by correcting the reference stride;
Calculating the exercise intensity of the unit time using the counted steps and the corrected stride;
An exercise intensity calculation method comprising: An information device for calculating exercise intensity by a user,
Counting means for counting the number of steps of the user within a unit time;
A first storage unit that stores the number of steps and a step correction value for correcting the reference step in association with each other;
Based on the number of steps counted by the counting means, a step length correction value corresponding to the counted number of steps is obtained from the first storage unit, and a corrected step length is calculated by correcting a preset reference step length. A calculation means;
An information device comprising: exercise intensity calculation means for calculating an exercise intensity of a user within a unit time based on the counted number of steps and the corrected stride. The information device further includes
A second storage unit that stores information related to walking distance within unit time and exercise intensity in association with each other,
The exercise intensity calculation unit obtains information related to a walking distance within a unit time based on the counted number of steps and the corrected stride, and the second storage based on information related to the obtained walking distance. The information equipment according to claim 17, wherein the corresponding exercise intensity is acquired from the unit. The information device further includes
The information device according to claim 17 or 18, further comprising: a calorie consumption calculating unit that calculates calorie consumption within a unit time based on the calculated exercise intensity. In the information device,
The information related to the walking distance is walking speed,
The information apparatus according to claim 18, wherein the exercise intensity calculation unit calculates a walking speed within a unit time based on the counted number of steps and the corrected stride.

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