JP2013208382A - Device, system and method for calculation of momentum - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a momentum calculating device or the like capable of calculating a momentum when riding on a vehicle with high accuracy.SOLUTION: A momentum calculating device includes a first acceleration acquisition unit 101 for acquiring the acceleration of an upper half body of a rider of a vehicle, a second acceleration acquisition unit 102 for acquiring the acceleration of the vehicle, and an upper half body momentum calculation unit 103 for calculating the momentum of the upper half body of the rider of the vehicle by using the acceleration by removing the acceleration of the vehicle from the acceleration of the upper half body of the rider of the vehicle.

Description

  The present invention relates to an exercise amount calculation device, an exercise amount calculation system, and an exercise amount calculation method. For example, the present invention relates to a momentum calculation device that calculates and outputs the momentum of a rider riding a vehicle such as a bicycle or a motorcycle.

  Conventionally, as a technique for calculating the amount of exercise of a bicycle rider, for example, detecting the crankshaft torque and the crankshaft rotation speed of the bicycle, calculating the work rate obtained by the product of the crankshaft torque and the crankshaft rotation speed, An electrically assisted bicycle that converts the work rate into calories is known (see, for example, Patent Document 1). Moreover, a bicycle meter that calculates the amount of exercise by a regression equation of the work rate and the amount of exercise (or calorie consumption) obtained experimentally is known (for example, see Patent Document 2).

JP 2004-338653 A Japanese Patent Laid-Open No. 10-035567

  Bicycle riders use upper body muscles such as arms, abdominal muscles, or back muscles to maintain the upper body posture above the saddle.

  However, in the prior art, paying attention only to the pedaling motion of the lower body of the rider below the saddle (hereinafter referred to as the lower body motion), the work rate obtained by the product of the crankshaft torque of the bicycle and the crankshaft speed is calculated as the momentum. It is calculated as For this reason, the amount of exercise of the whole body could not be calculated with high accuracy.

  The present invention has been made in view of the above-described conventional circumstances, and it is an object of the present invention to provide a momentum calculation device, a momentum calculation system, and a momentum calculation method capable of accurately calculating the amount of exercise while riding in a vehicle. .

  The momentum calculation device according to the present invention includes a first acceleration acquisition unit that acquires acceleration of an upper body of a rider of the vehicle, a second acceleration acquisition unit that acquires acceleration of the vehicle, and an acceleration of the upper body of the rider. An upper body exercise amount calculation unit that calculates an upper body exercise amount using the acceleration from which the acceleration is removed.

  According to this configuration, the momentum of the upper body while riding a vehicle such as a bicycle or a motorcycle can be calculated. In addition, it is possible to accurately calculate the whole body exercise amount by calculating the sum of the lower body exercise amount.

  The momentum calculation system of the present invention is a momentum calculation system that communicates between a momentum calculation device and a portable terminal, and the momentum calculation device obtains an acceleration vector of an upper body of a rider of a vehicle. Using the acceleration vector obtained by removing the acceleration vector of the vehicle from the acceleration vector of the upper body of the rider of the vehicle with the coordinate axes matched, the second acceleration acquisition unit for acquiring the acceleration vector of the vehicle, An upper body momentum calculating unit for calculating the upper body momentum of the vehicle rider, a lower body momentum calculating unit for calculating the lower body momentum of the vehicle rider, and the upper body momentum of the vehicle rider and the lower body momentum of the vehicle rider. And a first output unit that outputs the amount of exercise of the rider of the vehicle, and the portable terminal includes the exercise amount calculating device. A momentum acquisition unit for acquiring the momentum of the rider of the vehicle output from the vehicle, an activity amount calculation unit for calculating a basal metabolism based on information on the rider of the vehicle, and the momentum of the rider of the vehicle and the basal metabolism A second output unit that outputs information based on the quantity.

  According to this configuration, the momentum of the upper body while riding a vehicle such as a bicycle or a motorcycle can be calculated. When the vehicle is a bicycle, the total amount of exercise while riding the bicycle can be accurately calculated by calculating the sum of the amount of exercise with the lower half of the body. When the vehicle is a motorcycle, the momentum of the lower body is almost equal to zero, so that the momentum of the upper body can be calculated as the momentum of the whole body. Furthermore, in consideration of the basal metabolic rate, useful information can be presented to the vehicle rider.

  Further, the momentum calculation method of the present invention is a momentum calculation method in the momentum calculation device, the step of acquiring the acceleration of the upper body of the rider of the vehicle, the step of acquiring the acceleration of the vehicle, and the upper body of the rider of the vehicle Calculating the momentum of the upper body of the rider of the vehicle using the acceleration obtained by removing the acceleration of the vehicle from the acceleration.

  According to this method, it is possible to calculate the momentum of the upper body while riding a vehicle such as a bicycle or a motorcycle. When the vehicle is a bicycle, the total amount of exercise while riding the bicycle can be accurately calculated by calculating the sum of the amount of exercise with the lower half of the body. When the vehicle is a motorcycle, the momentum of the lower body is almost equal to zero, so that the momentum of the upper body can be calculated as the momentum of the whole body.

  According to the present invention, it is possible to accurately calculate the amount of exercise while getting on the vehicle.

The block diagram which shows the structural example of the exercise amount calculation apparatus in the 1st Embodiment of this invention. The block diagram which shows the structural example of the exercise amount calculation apparatus in the 2nd Embodiment of this invention. The figure which shows an example of a mode that the rider gets on the bicycle and pedals in the 2nd Embodiment of this invention. (A), (B) The figure which shows an example of the relationship between the direction of the coordinate axis in each time of each of the 1st acceleration acquisition part and the 2nd acceleration acquisition part in FIG. 3, and the acceleration vector which each acquires. The figure which shows an example of the mode of the acceleration vector which arises in the upper body when a rider gets on the bicycle in the 2nd Embodiment of this invention, and pedals strongly, and the bicycle The figure which shows an example of the relationship between the direction of the coordinate axis in each time of each of the 1st acceleration acquisition part in FIG. 5, and the 2nd acceleration acquisition part, and the acceleration vector which each acquires. The flowchart which shows an example of the coordinate axis adjustment process in the 2nd Embodiment of this invention. The flowchart which shows an example of the process which calculates the exercise amount of the upper body in the upper body exercise amount calculation part in the 2nd Embodiment of this invention. The block diagram which shows the structural example of the exercise amount calculation apparatus in the 3rd Embodiment of this invention. The block diagram which shows the structural example of the exercise amount calculation apparatus in the 4th Embodiment of this invention. The flowchart which shows an example of the process which matches the coordinate axis of the 1st acceleration vector and the 2nd acceleration vector in the 4th Embodiment of this invention. The block diagram which shows the structural example of the exercise amount calculation apparatus in the 5th Embodiment of this invention. (A)-(C) The figure which shows an example of the relationship between the 1st acceleration vector in the 5th Embodiment of this invention, the 2nd acceleration vector, and crankshaft torque. The flowchart which shows an example of the coordinate axis adjustment process in the 5th Embodiment of this invention. (A) to (C) Relationship between the first acceleration vector, the second acceleration vector, and the crankshaft torque when the crankshaft rotation period is smaller than the predetermined time interval Δt in the fifth embodiment of the present invention. Figure showing an example The block diagram which shows the structural example of the exercise amount calculation apparatus in the 6th Embodiment of this invention. The flowchart which shows an example of the coordinate axis adjustment process in the 6th Embodiment of this invention. The block diagram which shows the structural example of the exercise amount calculation apparatus in the 7th Embodiment of this invention. The block diagram which shows the structural example of the exercise amount calculation system in the 8th Embodiment of this invention. The flowchart which shows an example of the process which calculates momentum with the portable terminal in the 8th Embodiment of this invention.

  Applicants noted that there is an upper body momentum above the saddle when driving a bicycle. This is because a bicycle rider uses muscles of each part to maintain the posture of the upper body above the saddle against the force of inertia that occurs when starting, decelerating, climbing and the like. That is, in the present invention, the rider's momentum is calculated as the sum of the upper body's momentum and the lower body's momentum. By calculating the amount of exercise of the upper body, the amount of exercise of the whole body can be calculated with high accuracy.

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

(First embodiment)
The first embodiment of the present invention is an example of the basic aspect of the present invention.

  FIG. 1 is a block diagram illustrating a configuration example of an exercise amount calculation apparatus according to the first embodiment of the present invention. The exercise amount calculation device 100 illustrated in FIG. 1 includes a first acceleration acquisition unit 101, a second acceleration acquisition unit 102, and an upper body exercise amount calculation unit 103.

  The first acceleration acquisition unit 101 acquires, from, for example, an acceleration sensor (first acceleration sensor) (not shown) mounted on the upper body of a bicycle rider, the first acceleration including the upper body motion and the acceleration due to the bicycle motion. The movement of the bicycle is, for example, a vertical movement due to road surface unevenness, a forward / backward movement accompanying acceleration / deceleration / turning, and a left / right movement.

  As a method for acquiring the first acceleration from the first acceleration sensor, for example, a wireless transmission device is provided in the first acceleration sensor (not shown). Then, it is assumed that the first acceleration acquisition unit 101 is a wireless receiver, and the first acceleration acquisition unit 101 receives information from the first acceleration sensor.

  The second acceleration acquisition unit 102 acquires a second acceleration due to the movement of the bicycle from an acceleration sensor (second acceleration sensor) (not shown) fixed to the bicycle.

  As a method for acquiring the second acceleration from the second acceleration sensor, a wireless transmission device is provided in the second acceleration sensor (not shown). Then, it is assumed that the second acceleration acquisition unit 102 is a wireless reception device, and the second acceleration acquisition unit 102 receives information from the second acceleration sensor.

  The upper body exercise amount calculation unit 103 calculates the acceleration based on only the upper body exercise by removing the second acceleration from the first acceleration (hereinafter referred to as the upper body exercise acceleration), and the upper body exercise acceleration and the upper body obtained experimentally. The amount of exercise of the upper body is calculated using a regression equation of the amount of exercise. As for the method of calculating the upper body exercise amount from the upper body exercise acceleration, for example, the upper body exercise is experimentally performed, and the absolute value of the upper body exercise acceleration is calculated from the average value over a certain period of time and the oxygen intake from the breath gas analysis. A known method such as a regression equation between the obtained upper body exercise amount and the like may be used.

  The exercise amount calculation apparatus 100 includes a storage medium such as a CPU (Central Processing Unit) and a ROM (Read Only Memory) storing a control program. Further, the exercise amount calculation device 100 has a working memory such as a RAM (Random Access Memory). In this case, each functional unit described above is realized by the CPU executing the control program.

  The exercise amount calculation apparatus 100 can acquire the acceleration of the upper body exercise by removing the second acceleration from the first acceleration. Therefore, the amount of exercise of the upper body can be calculated. That is, since the amount of exercise of the upper body while riding a bicycle can be calculated, the amount of exercise of the whole body can be accurately calculated by calculating the sum of the amount of exercise of the lower body.

  Although the first embodiment has been described as an application example to a bicycle, it can also be applied to a vehicle such as a motorcycle.

(Second Embodiment)
FIG. 2 is a block diagram showing a configuration of an exercise amount calculation apparatus according to the second embodiment of the present invention. The exercise amount calculation apparatus 100B illustrated in FIG. 2 includes a first acceleration acquisition unit 201, a second acceleration acquisition unit 202, a torque acquisition unit 203, a coordinate axis adjustment unit 204, and an upper body exercise amount calculation unit 205.

  The first acceleration acquisition unit 201 acquires, from the first acceleration sensor, a first acceleration vector including an acceleration vector due to upper body exercise and bicycle motion. The method for obtaining the first acceleration from the first acceleration sensor is the same as that described above.

  The second acceleration acquisition unit 102 acquires a second acceleration vector due to the movement of the bicycle from the second acceleration sensor. The method for obtaining the second acceleration from the second acceleration sensor is the same as that described above.

  The torque acquisition unit 203 acquires the torque applied to the crankshaft of the bicycle. This torque (crankshaft torque) is acquired from a torque sensor (not shown) attached to the crankshaft. For the torque sensor, for example, a method using a magnetostrictive effect combining a magnetostrictive element and a solenoid is used.

  The coordinate axis adjustment unit 204 monitors the torque value acquired from the torque acquisition unit 203. The coordinate axis adjustment unit 204 uses the first acceleration vector and the second acceleration vector to determine the coordinate axis (first coordinate axis) of the first acceleration vector and the coordinate axis (second coordinate axis) of the second acceleration vector. Match. Details of the process of matching the coordinate axes (hereinafter also referred to as coordinate axis adjustment process) will be described later. Note that the process of matching the coordinate axes means to increase the accuracy of the degree of coincidence between the first coordinate axis and the second coordinate axis, and is not necessarily in a completely matched state.

  In the present embodiment, the first acceleration vector is an acceleration vector acquired from the first acceleration acquisition unit 201 when the torque value exceeds a predetermined threshold. The second acceleration vector is an acceleration vector acquired from the second acceleration acquisition unit 202 when the torque value exceeds a predetermined threshold.

  The upper body exercise amount calculation unit 205 calculates the acceleration vector of the upper body exercise by removing the second acceleration vector from the first acceleration vector whose coordinate axes are matched by the coordinate axis adjustment unit 204. Further, the upper body exercise amount is calculated using a regression equation between the acceleration of the upper body exercise and the upper body exercise amount obtained experimentally as described above. Detailed description will be described later.

  By the way, when the first acceleration sensor is mounted on the upper body, the rider feels bothered if the direction of the first acceleration sensor is designated and mounted. For this reason, for example, it is desirable that the momentum calculation device can accurately calculate the momentum of the upper body even when the first acceleration sensor is in the pocket. Below, the detail of such a structure is demonstrated.

  FIG. 3 shows a rider riding a bicycle and pedaling. In FIG. 3, the case where the 1st acceleration sensor is put in the rider's upper body pocket, for example is assumed.

  The direction of the coordinate axis (X, Y, Z direction) of the first acceleration acquisition unit 201 is the same as the direction of the coordinate axis (X, Y, Z axis direction) of an acceleration vector acquired from a first acceleration sensor (not shown). belongs to. The direction of the coordinate axis of the first acceleration acquisition unit 201 changes from time to time with respect to the bicycle coordinate system as the first acceleration sensor moves in the pocket due to movement of the upper body while riding the bicycle, vibration received from the bicycle, etc. To do.

  On the other hand, the direction of the coordinate axis (X, Y, Z axis direction) of the second acceleration acquisition unit 202 is the direction of the coordinate axis of the acceleration vector (X, Y, Z axis direction) acquired from the second acceleration sensor (not shown). Is the same. The direction of the coordinate axis of the second acceleration acquisition unit 202 is also fixed relative to the coordinate system of the bicycle because the second acceleration sensor is fixed to the bicycle. It does not change basically due to upper body movements while riding a bicycle or vibrations received from the bicycle.

  Accordingly, the direction of the coordinate axis (first coordinate axis) of the first acceleration acquisition unit 201 changes from time to time with respect to the direction of the coordinate axis (second coordinate axis) of the second acceleration acquisition unit 202.

  FIG. 4 is a diagram for explaining the relationship between the coordinate axes at the two different time points of the first acceleration acquisition unit 201 and the second acceleration acquisition unit 202, and the first acceleration vector and the second acceleration vector. is there.

  FIG. 4A shows the first coordinate axis 401 and the second coordinate axis 402 at a predetermined time point. FIG. 4B shows the first coordinate axis 411 and the second coordinate axis 412 at a time point different from the time point of FIG.

  As described above, the first coordinate axis 401 in FIG. 4A and the first coordinate axis in FIG. 4B are considered in consideration that the direction of the first coordinate axis changes from time to time with respect to the direction of the second coordinate axis. The coordinate axis 411 will be described using an example in which the direction of the coordinate axis is different. FIG. 4A shows a case where the directions of the first coordinate axis 401 and the second coordinate axis 402 are the same. FIG. 4B shows a case where the directions of the first coordinate axis 411 and the second coordinate axis 412 are different.

  First, a case where the direction of the first coordinate axis and the direction of the second coordinate axis coincide with each other as shown in FIG.

  The first acceleration acquisition unit 201 acquires a combined vector (acceleration vector) 405 obtained by combining an acceleration vector 404 representing upper body motion and an acceleration vector 403 representing bicycle motion. The combined vector 405 is an example of a first acceleration vector.

  The second acceleration acquisition unit 202 acquires an acceleration vector 406 representing a bicycle motion. The acceleration vector 406 is an example of a second acceleration vector.

The components of each acceleration vector described above can be defined as follows when decomposed into X-axis, Y-axis, and Z-axis components.
Acceleration vector 403 (X1, Y1, Z1)
Acceleration vector 404 (X2, Y2, Z2)
Acceleration vector 405 (X1 + X2, Y1 + Y2, Z1 + Z2)
Acceleration vector 406 (X1, Y1, Z1)

  The upper body exercise amount calculation unit 205 removes the second acceleration vector from the first acceleration vector. Specifically, the acceleration vector 406 is subtracted from the acceleration vector 405. When the direction of the first coordinate axis and the direction of the second coordinate axis match, the components of the acceleration vectors 403 and 406 representing the movement of the bicycle have the same value, so the acceleration vector 404 representing the upper body motion. Can be calculated as is.

  Next, a case where the direction of the first coordinate axis is different from the direction of the second coordinate axis as shown in FIG.

  The first acceleration acquisition unit 201 acquires a combined vector (acceleration vector) 415 obtained by combining an acceleration vector 414 representing upper body motion and an acceleration vector 413 representing a bicycle motion. The combined vector 415 is an example of a first acceleration vector.

  The second acceleration acquisition unit 202 acquires an acceleration vector 416 representing a bicycle motion. The acceleration vector 416 is an example of a second acceleration vector.

The components of each acceleration vector described above can be defined as follows when decomposed into X-axis, Y-axis, and Z-axis components.
Acceleration vector 413 (X4, Y4, Z4)
Acceleration vector 414 (X5, Y5, Z5)
Acceleration vector 415 (X4 + X5, Y4 + Y5, Z4 + Z5)
Acceleration vector 416 (X6, Y6, Z6)

  The upper body exercise amount calculation unit 205 removes the second acceleration vector from the first acceleration vector. Specifically, the acceleration vector 416 is subtracted from the acceleration vector 415. When the direction of the first coordinate axis is different from the direction of the second coordinate axis, the components of the acceleration vectors 413 and 416 representing the movement of the bicycle have different values. Therefore, the upper body exercise amount calculation unit 205 cannot directly calculate the acceleration vector 414 representing the upper body exercise.

  In order to calculate the acceleration vector 414 representing the motion of the upper body, it is necessary to match the direction of the first coordinate axis 411 and the direction of the second coordinate axis 412. That is, it is necessary for the upper body exercise amount calculation unit 205 to subtract the acceleration vectors after the coordinate axis adjustment unit 204 matches the directions of the coordinate axes.

As a method for matching the directions of the coordinate axes, for example, there are the following methods.
FIG. 5 is a diagram for explaining the upper body and the acceleration vector applied to the bicycle when the bicycle rider strongly presses the bicycle pedal.

  FIG. 5 shows a first acceleration sensor 501 placed in the pocket of the upper body of the rider and a second acceleration sensor 502 installed on the bicycle. In addition, when the rider strongly presses the pedal, the acceleration vector 423 in the bicycle forward direction that the first acceleration acquisition unit 201 acquires from the first acceleration sensor 501 and the second acceleration acquisition unit 202 the second acceleration sensor 502. The acceleration vector 426 in the bicycle forward direction obtained from the above is shown.

  In FIG. 6, the acceleration vector 424 representing the acquired upper body motion on the first coordinate axis 421 of the first acceleration acquisition unit 201 at the time when the rider of FIG. A vector 423 and a composite vector 425 thereof are shown.

  Further, FIG. 6 shows the acquired acceleration vector 426 in the bicycle forward direction on the second coordinate axis 422 of the second acceleration acquisition unit 202 at the time when the rider of FIG.

  When the rider strongly pushes the pedal of the bicycle, the torque applied to the crankshaft is converted into a propulsive force in the forward direction of the bicycle, so that the second coordinate axis 422 of the second acceleration acquisition unit 202 accelerates in the forward direction of the bicycle. A vector 426 is generated (FIG. 6). The case where the rider strongly pushes the pedal of the bicycle is, for example, a case where the acceleration vector 426 in the bicycle forward direction becomes larger than when the pedal is pushed so that the bicycle maintains a constant speed.

  In this case, a large acceleration in the bicycle forward direction that is the same size and direction as the acceleration vector 426 in the bicycle forward direction is also generated on the upper body of the rider. That is, as shown in FIG. 6, an acceleration vector 423 in the bicycle forward direction is generated on the first coordinate axis 421 of the first acceleration acquisition unit 201.

  Note that the acceleration vector acquired by the first acceleration acquisition unit 201 from the first acceleration sensor 501 is a combined vector 425. However, when the pedal is strongly pedaled, the acceleration vector 424 representing the upper body motion can be considered to be sufficiently smaller than the acceleration vector 423 in the bicycle forward direction, so the combined vector 425 approximates the acceleration vector 423 in the bicycle forward direction. it can. Hereinafter, the first acceleration acquisition unit 201 will be described as acquiring the acceleration vector 423 in the bicycle forward direction.

In FIG. 6, since the direction of the first coordinate axis 421 and the direction of the second coordinate axis 422 are different from each other, the X-axis, Y-axis, and Z-axis components of the acceleration vectors 423 and 426 are different. The acceleration vectors 423 and 426 can be defined as follows.
Acceleration vector 423 (X7, Y7, Z7) on the first coordinate axis 421
Acceleration vector 426 (X8, Y8, Z8) on the second coordinate axis 422

  Here, as shown in FIG. 6, an acceleration vector 427 on the first coordinate axis 421 having the same components as the X-axis, Y-axis, and Z-axis components of the acceleration vector 426 is prepared. The coordinate axis adjustment unit 204 converts the acceleration vector 427 to the acceleration vector 423. That is, the coordinate axis adjustment unit 204 calculates a coordinate adjustment parameter for rotating the acceleration vector 427 along the X axis, the Y axis, and the Z axis to match the acceleration vector 423.

  The conversion using the coordinate adjustment parameter by the coordinate axis adjustment unit 204 is equivalent to matching the direction of the coordinate axis from the first coordinate axis 421 to the second coordinate axis 422. Each component of the acceleration vector 427 is an acceleration vector 426 (X8, Y8, Z8) on the first coordinate axis 421. Therefore, if the coordinate adjustment parameter is R, R that satisfies the following (Equation 1) may be calculated.

Note that the constants 1 / √ (X7 ² + Y7 ² + Z7 ² ) and 1 / √ (X8 ² + Y8 ² + Z8 ² ) in (Equation 1) are norms (sizes) of the acceleration vectors 423 and 426, respectively.

  Next, calculation of the upper body exercise amount by the upper body exercise amount calculation unit 205 will be described in detail.

  First, the upper body exercise amount calculation unit 205 uses the coordinate adjustment parameter calculated by the coordinate axis adjustment unit 204 to convert the first acceleration vector into an acceleration vector (hereinafter referred to as the second coordinate axis) of the second acceleration acquisition unit 202. (Acceleration vector after coordinate adjustment). An example of the coordinate adjustment parameter is a rotation transformation matrix.

  Subsequently, the upper body exercise amount calculation unit 205 removes the second acceleration vector acquired by the second acceleration acquisition unit 202 from the coordinate vector after the coordinate adjustment. The acceleration vector obtained by the removal includes acceleration information of the upper body movement from which the bicycle movement is removed. As a method for calculating the momentum from the acceleration vector, the known method described above may be used.

Next, the operation of the exercise amount calculation apparatus 100B will be described.
FIG. 7 is a flowchart showing coordinate axis adjustment processing by the coordinate axis adjustment unit 204.

  First, the coordinate axis adjustment unit 204 acquires the torque applied to the crankshaft from the torque acquisition unit 203 (step S701). The left and right cranks are configured 180 degrees symmetrical with respect to the crankshaft. When the rider pedals with both feet, the torque acquisition unit 203 acquires the torque indicated by a waveform that changes periodically so that two torque peaks occur during one revolution of the crankshaft. Will do.

  The coordinate axis adjustment unit 204 checks whether or not the acquired torque is a peak value (step S702). When the acquired torque is not the peak value (step S702: NO), nothing is done and the process returns to S701.

  On the other hand, when the acquired torque is a peak value (step S702: YES), the coordinate axis adjustment unit 204 determines that the rider is pedaling strongly. In this case, the coordinate axis adjustment unit 204 calculates coordinate adjustment parameters using the acceleration vector 423 and the acceleration vector 426 (step S703).

  The acceleration vector 423 is an acceleration vector acquired by the first acceleration acquisition unit 201 when a torque peak value is detected. The acceleration vector 426 is an acceleration vector acquired by the second acceleration acquisition unit 202 at the time when the peak value of torque is detected.

  The coordinate axis adjustment unit 204 updates the coordinate adjustment parameters while performing the processes in steps S701 to S703 as needed or periodically. As a result, even when the direction of the first coordinate axis of the first acceleration acquisition unit 201 changes while riding a bicycle, the direction of the first coordinate axis can be made to coincide with the direction of the second coordinate axis with high accuracy at any time. Accordingly, the calculation accuracy of the momentum can be improved. Note that the direction of the first coordinate axis and the direction of the second coordinate axis do not necessarily coincide completely, and actually include an error.

  In the above-described example, the acceleration vectors 423 and 426 in the bicycle forward direction acquired by the first acceleration acquisition unit 201 and the second acceleration acquisition unit 202 when the peak value of the torque is detected are used. Instead, the acceleration vectors 423 and 426 in the bicycle forward direction, which are obtained by the first acceleration acquisition unit 201 and the second acceleration acquisition unit 202 when the torque peak value is detected, and whose absolute values are equal to or greater than a predetermined value, are obtained. It may be used. This predetermined value is an example of a second predetermined value.

  As this predetermined value, for example, it is defined that the absolute value of the acceleration vector in the bicycle forward direction by strongly pedaling is sufficiently larger than the absolute value of the acceleration vector representing the upper body motion.

  As a result, the acceleration vector 424 representing the upper body motion can be considered to be sufficiently smaller than the acceleration vector 423 in the bicycle forward direction. Therefore, the combined vector 425 acquired by the first acceleration acquisition unit 201 can be handled as the acceleration vector 423 in the bicycle forward direction.

  FIG. 8 is a flowchart showing processing (upper body exercise amount calculation processing) for calculating the upper body exercise amount by the upper body exercise amount calculation unit 205.

  First, the upper body exercise amount calculation unit 205 checks whether the coordinate adjustment parameter is calculated by the coordinate axis adjustment unit 204 (step S801). If the coordinate adjustment parameter has not been calculated (step S801: NO), step S801 is repeated until it is calculated.

  On the other hand, when the coordinate adjustment parameter is calculated (step S801: YES), the upper body exercise amount calculation unit 205 converts the first acceleration vector into the coordinate vector after coordinate adjustment using the coordinate adjustment parameter. (Step S802).

  Subsequently, the upper body exercise amount calculation unit 205 removes the second acceleration vector from the coordinate vector after the coordinate adjustment, and calculates an acceleration vector of the upper body exercise (step S803).

  Subsequently, the upper body exercise amount calculation unit 205 calculates the upper body exercise amount from the calculated acceleration vector (step S804). As a method for calculating the momentum from the acceleration vector, the known method described above may be used.

  According to the momentum calculation apparatus 100B, when the directions of the first coordinate axis and the second coordinate axis coincide with each other at any time, it is possible to grasp from the peak value of the torque applied to the crankshaft that the rider has pushed the pedal strongly. Therefore, by using the acceleration vector in the bicycle forward direction at the peak time of the torque, it becomes possible to match the direction of the first coordinate axis with the direction of the second coordinate axis with high accuracy.

  Accordingly, the second acceleration vector is removed from the first acceleration vector in which the directions of the coordinate axes are accurately matched, and the acceleration vector of the upper body motion is calculated to calculate the upper body exercise amount. That is, the momentum of the upper body while riding a bicycle can be calculated.

(Third embodiment)
FIG. 9 is a block diagram illustrating a configuration example of an exercise amount calculation apparatus according to the third embodiment of the present invention. FIG. 9 corresponds to FIG. 2 of the second embodiment. 9, the same components as those in FIG. 2 are denoted by the same reference numerals, and description thereof is omitted.

  The exercise amount calculation apparatus 100C illustrated in FIG. 9 includes a first acceleration acquisition unit 201, a second acceleration acquisition unit 202, a braking instruction acquisition unit 1406, a coordinate axis adjustment unit 1404, and an upper body exercise amount calculation unit 205.

  The braking instruction acquisition unit 1406 acquires a braking instruction for generating a braking force on the bicycle. As a method for obtaining a braking instruction, for example, there is a method in which a switch or a potentiometer is attached to a lever of a bicycle brake and a judgment is made based on a voltage change that occurs when a rider holds the lever to apply a brake. .

  The coordinate axis adjustment unit 1404 monitors the braking instruction acquired by the braking instruction acquisition unit 1406, and uses the first acceleration vector and the second acceleration vector to determine the direction of the first coordinate axis and the second coordinate axis. Match the direction.

  In the present embodiment, the first acceleration vector is an acceleration vector acquired from the first acceleration acquisition unit 201 when a braking instruction is acquired. The second acceleration vector is an acceleration vector acquired from the second acceleration acquisition unit 202 when the braking instruction is acquired.

  A difference between the coordinate axis adjustment unit 1404 and the coordinate axis adjustment unit 204 is that a braking instruction is used instead of torque. For example, it is assumed that the rider gives a braking instruction (that is, a brake) when a bicycle is traveling at a certain speed. At this time, in the first acceleration vector and the second acceleration vector, a large acceleration vector in the direction of decelerating the bicycle, that is, rearward of the bicycle is generated. This acceleration vector is a vector whose direction is 180 degrees opposite to the large acceleration vector in the bicycle forward direction that occurs when the rider strongly presses the pedal, as described in the second embodiment. Therefore, as a method of matching the direction of the first coordinate axis of the first acceleration acquisition unit 201 with the direction of the second coordinate axis of the second acceleration acquisition unit 202, the method described in the coordinate axis adjustment unit 204 in the second embodiment. The coordinate adjustment parameter may be calculated based on the braking instruction instead of the torque.

  It should be noted that the coordinate axis adjustment unit 1404 is only when the absolute value of the first acceleration vector and the absolute value of the second acceleration vector generated at the rear of the bicycle obtained at the time when the braking instruction is acquired exceed a predetermined value. The direction of the first coordinate axis may coincide with the direction of the second coordinate axis. This predetermined value is an example of a third predetermined value.

  This predetermined value is defined so that the absolute value of the acceleration vector in the rearward direction of the bicycle resulting from the application of the brake is sufficiently larger than the absolute value of the acceleration vector representing the upper body motion.

  As a result, the acceleration vector representing the upper body motion can be considered sufficiently smaller than the acceleration vector in the rearward direction of the bicycle. Therefore, the combined vector acquired by the first acceleration acquisition unit 201 can be handled as an acceleration vector in the rearward direction of the bicycle.

  Further, both acceleration vectors in the forward and backward directions of the bicycle generated when the rider accelerates with a strong pedal and when the brake is applied may be used. Even in this case, the direction of the first coordinate axis can be matched with the direction of the second coordinate axis with high accuracy.

  The coordinate axis adjustment unit 1404 updates the coordinate adjustment parameters as needed or periodically when the bicycle accelerates or decelerates. As a result, even when the direction of the first coordinate axis of the first acceleration acquisition unit 201 changes while riding a bicycle, the direction of the first coordinate axis is changed to the direction of the second coordinate axis of the second acceleration acquisition unit 202 at any time with high accuracy. They can be matched, and the calculation accuracy of momentum can be improved.

  According to the momentum calculation device 100C, when the directions of the first coordinate axis and the second coordinate axis coincide with each other at any time, the acceleration vector to the rear of the bicycle generated when the vehicle decelerates is used. Therefore, the direction of the first coordinate axis can be accurately matched with the direction of the second coordinate axis.

  Accordingly, the second acceleration vector is removed from the first acceleration vector in which the directions of the coordinate axes are accurately matched, and the acceleration vector of the upper body motion is calculated to calculate the upper body exercise amount. That is, the momentum of the upper body while riding a bicycle can be calculated with high accuracy.

  Although the third embodiment has been described as an application example to a bicycle, it can also be applied to a vehicle such as a motorcycle.

(Fourth embodiment)
FIG. 10 is a block diagram illustrating a configuration example of an exercise amount calculation apparatus according to the fourth embodiment of the present invention. FIG. 10 corresponds to FIG. 2 of the second embodiment. 10, the same components as those in FIG. 2 are denoted by the same reference numerals, and description thereof is omitted.

  The exercise amount calculation device 100D illustrated in FIG. 10 includes a first acceleration acquisition unit 201, a second acceleration acquisition unit 202, a coordinate axis adjustment unit 904, and an upper body exercise amount calculation unit 205.

  The coordinate axis adjustment unit 904 monitors the first acceleration vector acquired from the first acceleration acquisition unit 201 and the second acceleration vector acquired from the second acceleration acquisition unit 202 in advance. The coordinate axis adjustment unit 904 uses the first acceleration vector and the second acceleration vector at the time when the absolute values of both acceleration vectors simultaneously reach the peak value, and the direction between the first coordinate axis and the second coordinate axis. Match. As a method for matching the directions of the coordinate axes, for example, there are the following methods.

  As described in the second embodiment, when the rider strongly pedals the bicycle, a large acceleration is generated in the bicycle forward direction. At the same time, the upper body of the rider above the saddle also has a large acceleration in the forward direction of the bicycle with almost the same size. That is, as shown in FIG. 6, when the pedal is strongly pushed, acceleration vectors 423 and 426 are generated at the same time in the same direction and substantially the same magnitude.

  As described above, when the pedal is pedaled with both feet, the torque indicated by the periodic waveform in which the peak value of the torque is generated twice during one rotation of the crankshaft is acquired. Therefore, an acceleration vector whose absolute value is indicated by a periodic waveform is acquired in the same manner for the acceleration vector in the bicycle forward direction.

  Accordingly, the coordinate axis adjustment unit 904 determines that the acceleration vector at the time when the peak value is detected at the same time for the absolute value of the first acceleration vector and the absolute value of the second acceleration vector is a large acceleration in the bicycle forward direction. it can. The coordinate axis adjustment unit 904 assumes that the first acceleration vector (acceleration vector 423 in FIG. 6) and the second acceleration vector (acceleration vector 426 in FIG. 6) at this time point are the same in both magnitude and direction. A coordinate adjustment parameter that matches the direction of one coordinate axis 421 and the direction of the second coordinate axis 422 is calculated.

  Note that the coordinate axis adjustment unit 904 includes the first acceleration vector and the second acceleration vector when the absolute value peak value of the first acceleration vector and the absolute value peak value of the second acceleration vector simultaneously exceed a predetermined value. The direction of the coordinate axes may be matched using the acceleration vector. This predetermined value is an example of a first predetermined value.

  For example, as shown in FIG. 6, the predetermined value is set so that the absolute value of the acceleration vector 423 in the bicycle forward direction by strongly pedaling is sufficiently larger than the absolute value of the acceleration vector 424 representing the upper body motion. Define it.

  Thus, the acceleration vector 424 representing the upper body motion can be regarded as sufficiently smaller than the acceleration vector 423 in the bicycle forward direction. Therefore, the combined vector 425 acquired by the first acceleration acquisition unit 201 can be handled as the acceleration vector 423 in the bicycle forward direction.

Next, an operation example of the exercise amount calculation apparatus 100D will be described.
FIG. 11 is a flowchart showing coordinate adjustment processing by the coordinate axis adjustment unit 904.

  First, the coordinate axis adjustment unit 904 acquires a first acceleration vector from the first acceleration acquisition unit 201 and acquires a second acceleration vector from the second acceleration acquisition unit 202 (step S1001).

  Subsequently, the coordinate axis adjustment unit 904 confirms whether or not the peak value of the absolute value of the acquired first acceleration vector and the peak value of the absolute value of the second acceleration vector are detected simultaneously (step S1002). ). The term “simultaneous” here means a time (about 0.5 seconds) that the crank rotates 180 degrees. This is because the left and right cranks are symmetrically rotated 180 degrees with respect to the crankshaft, and a torque peak occurs once while the crank rotates 180 degrees. That is, the absolute value of either the first acceleration vector or the second acceleration vector first shows the peak value, and the absolute value of the other acceleration vector shows the peak within 0.5 seconds. .

  In step S1002, when at least one is not a peak value (step S1002: NO), nothing is done and the process returns to step S1001.

  On the other hand, if both are peak values at the same time (step S1002: YES), the coordinate axis adjustment unit 904 causes the bicycle to move forward when the first acceleration vector and the second acceleration vector push the pedal strongly. It is determined that the acceleration vectors 423 and 426 are directions, and a coordinate adjustment parameter is calculated (step S1003).

  The coordinate axis adjustment unit 904 updates the coordinate adjustment parameters while performing the processing of steps S1001 to S1003 as necessary or periodically. As a result, even when the direction of the first coordinate axis of the first acceleration acquisition unit 201 changes while riding a bicycle, the direction of the first coordinate axis is changed to the direction of the second coordinate axis of the second acceleration acquisition unit 202 at any time with high accuracy. They can be matched, and the calculation accuracy of momentum can be improved.

  In the present embodiment, the description has been given focusing on the acceleration of the bicycle when the pedal is strongly squeezed. Furthermore, the method of matching the directions of the coordinate axes using the acceleration vector generated behind the bicycle during braking as described in the third embodiment can also be applied to this embodiment.

  That is, the direction of the coordinate axes may be made coincident with each other by using the first acceleration vector in the rearward direction of the bicycle and the second acceleration vector that are generated simultaneously on both the upper body and the bicycle when the rider generates a brake. In this case, the absolute value peak value of the first acceleration vector and the absolute value peak value of the second acceleration vector simultaneously exceed a predetermined value.

  According to the momentum calculation apparatus 100D, when the directions of the coordinate axes of the first acceleration sensor and the second acceleration sensor coincide with each other at any time, the forward movement of the bicycle that occurs simultaneously when the rider strongly pushes the pedal or generates a braking instruction or A backward acceleration vector is used. Therefore, the directions of the coordinate axes can be matched with high accuracy.

  Therefore, the acceleration vector of the upper body motion can be calculated by removing the second acceleration vector from the first acceleration vector in which the directions of the coordinate axes are made to coincide with each other with high accuracy, and the momentum of the upper body can be calculated. That is, the momentum of the upper body while riding a bicycle can be calculated with high accuracy.

  Although the fourth embodiment has been described as an application example to a bicycle, it can also be applied to a vehicle such as a motorcycle.

(Fifth embodiment)
FIG. 12 is a block diagram illustrating a configuration example of an exercise amount calculation apparatus according to the fifth embodiment of the present invention, and FIG. 12 corresponds to FIG. 2 of the second embodiment. 12, the same components as those in FIG. 2 are denoted by the same reference numerals, and description thereof is omitted.

  An exercise amount calculation apparatus 100E illustrated in FIG. 12 includes a first acceleration acquisition unit 201, a second acceleration acquisition unit 202, a torque acquisition unit 203, an acceleration peak detection unit 1105, a coordinate axis adjustment unit 1104, and an upper body exercise amount calculation unit 205.

  The acceleration peak detection unit 1105 monitors the torque acquired from the torque acquisition unit 203, and determines that the time when the peak value of the torque is detected is the time when the rider strongly presses the pedal. This time is defined as time T0 (see FIG. 13C).

  Further, the acceleration peak detection unit 1105 monitors the first acceleration vector and the second acceleration vector during a predetermined time interval Δt from the time T0. The acceleration peak detection unit 1105 stores the time point when the peak value of the absolute value of both acceleration vectors is detected and the acceleration vector at that time point. The time point when the peak value of the absolute value of the first acceleration vector is detected is defined as time T1 (see FIG. 13A). A time point when the peak value of the absolute value of the second acceleration vector is detected is defined as time T2 (see FIG. 13B).

  The coordinate axis adjustment unit 1104 uses the first acceleration vector at time T1 and the second acceleration vector at time T2 stored by the acceleration peak detection unit 1105 to determine the direction of the first coordinate axis of the first acceleration acquisition unit 201. The second acceleration acquisition unit 202 is made to coincide with the second coordinate axis.

  Next, the operation principle of the acceleration peak detection unit 1105 and the coordinate axis adjustment unit 1104 will be described with reference to FIG.

  FIGS. 13A to 13C are graphs showing the relationship between the first acceleration vector, the second acceleration vector, and the torque acquired from the torque acquisition unit 203. FIG. 13A is a graph showing the time change of the absolute value of the first acceleration vector. FIG. 13B is a graph showing the time change of the absolute value of the second acceleration vector. FIG. 13C is a graph showing the time change of the torque acquired by the torque acquisition unit 203.

  When the rider pushes the pedal strongly with a bicycle, the upper body is not integrated with the bicycle, so that the inertial force acting on the rear of the bicycle may act and the upper body may take a posture facing the back of the bicycle. Then, in order to maintain the posture of the upper body, the rider generates a force that pulls back the upper body in the forward direction using the arms, abdominal muscles, and back muscles. This pulling force causes a large acceleration in the forward direction also in the upper body, but this force may be generated later than the point in time when the acceleration in the forward direction of the bicycle is generated.

  This state will be described with reference to FIGS. 13 (A) to 13 (C), it is assumed that the pedal is pushed hard for acceleration at time T0 from the state where the rider pushes the pedal so as to maintain a constant speed. At this time, the torque acquisition unit 203 detects the peak value of the torque. Since the bicycle is a rigid body, acceleration occurs immediately after torque is detected. Therefore, as shown in FIG. 13B, the absolute value of the second acceleration vector has a peak value at time T2 (T2 = T0).

  On the other hand, since the upper body is not integrated with the bicycle, as described above, inertial force toward the rear of the bicycle acts at time T0, and based on the force to pull the upper body forward at time T1 (T0 <T1) later than time T0. The peak value of the absolute value of the acceleration vector in the bicycle forward direction is detected. Therefore, the acceleration peak detection unit 1105 stores the first acceleration vector at time T1 and the second acceleration vector at time T2 (= T0).

  The time from when the peak value of the torque is detected until the peak value of the absolute value of the first acceleration vector is detected and the time until the peak value of the absolute value of the second acceleration vector is detected, A time limit (predetermined time interval Δt) may be provided.

  The predetermined time interval Δt may be set to one cycle by measuring the average crankshaft rotation cycle of the rider with a rotation speed sensor (not shown). For example, since the crankshaft rotation speed of a general rider is 60 to 70 rotations per minute, the crankshaft rotation cycle may be set to about 0.8 to 1.0 seconds. Alternatively, the crankshaft rotation period may be acquired in real time by a rotation speed sensor, and the predetermined time interval Δt may be set each time.

  The coordinate axis adjustment unit 1104 uses the first acceleration vector and the second acceleration vector stored in the acceleration peak detection unit 1105 to match the direction of the first coordinate axis with the direction of the second coordinate axis. An example of this method is the same as that according to the second embodiment. That is, the coordinate axis adjustment unit 1104 has a first acceleration vector (corresponding to the acceleration vector 423 in FIG. 6) stored in the acceleration peak detection unit 1105, a second acceleration vector (corresponding to the acceleration vector 426 in FIG. 6), Are vectors of the same size and direction. Then, the coordinate axis adjustment unit 1104 calculates a coordinate adjustment parameter that matches the direction of the first coordinate axis 421 with the direction of the second coordinate axis 422.

  In the above-described example, the torque acquisition unit 203 has been described as detecting the torque peak value. However, the detected torque peak value may exceed the predetermined value Cp. As the predetermined value Cp, the absolute value of the acceleration vector in the forward direction of the bicycle is such that the absolute value of the acceleration vector in the forward direction of the bicycle by pedaling strongly is sufficiently larger than the absolute value of the acceleration vector representing the upper body movement. After defining (minimum acceleration), the torque (torque value) is defined so that the minimum acceleration can be obtained. The calculation method is as follows.

F = M × αp
αp: Minimum acceleration in the forward direction of the bicycle M: Sum of the bicycle weight and the rider's weight F: Bicycle propulsion force that provides the minimum acceleration Cp = F × r / G
Cp: predetermined torque value r: tire radius G: gear ratio

  The coordinate axis adjustment unit 1104 also determines the first acceleration vector and the first acceleration vector when the absolute value peak value of the first acceleration vector and the absolute value peak value of the second acceleration vector exceed a predetermined value αp. The directions of the coordinate axes may be matched using the second acceleration vector. The predetermined value αp is an example of a first predetermined value.

  The predetermined value αp is defined such that the absolute value of the acceleration vector in the bicycle forward direction by strongly pedaling is the aforementioned minimum acceleration. As a result, the acceleration vector 424 representing the upper body motion can be considered to be sufficiently smaller than the acceleration vector 423 in the bicycle forward direction. Therefore, the combined vector 425 acquired by the first acceleration acquisition unit 201 can be handled as the acceleration vector 423 in the bicycle forward direction.

  In addition, a predetermined time interval Δt is set, and during the predetermined time interval Δt, the peak value of the absolute value of the first acceleration vector and the peak value of the absolute value of the second acceleration vector are detected, and at least one of them is detected. Consider a case where the predetermined value αp is not reached. In this case, the acceleration peak detection unit 1105 ends the detection of the peak values of the absolute values of the first acceleration vector and the second acceleration vector in the predetermined torque before the predetermined time interval Δt elapses, and the next torque Shift to detection of peak value at.

  If the peak value of the absolute value of the first acceleration vector is less than the minimum acceleration αp, the acceleration vector 424 representing the upper body motion is not negligible compared to the acceleration vector 423 in the bicycle forward direction. The combined vector 425 acquired by the first acceleration acquisition unit 201 cannot be approximated as the acceleration vector 423 in the bicycle forward direction. As a result, the coordinate axis adjustment unit 1104 uses the combined vector 425 having different sizes and directions and the acceleration vector 426 in the bicycle forward direction acquired by the second acceleration acquisition unit 202 to match the coordinate axes, thereby acquiring the first acceleration. Deviation occurs in the direction of the coordinate axes of the unit 201 and the second acceleration acquisition unit 202. If the peak value of the absolute value of the first acceleration vector and the peak value of the absolute value of the second acceleration vector are both greater than or equal to the minimum acceleration αp, the following first acceleration acquisition unit 201 in the coordinate axis adjustment unit 1104 It is possible to suppress the deterioration of the matching accuracy of the direction of the coordinate axis of the second acceleration acquisition unit 202.

  Next, an operation example of the exercise amount calculation apparatus 100E will be described.

  FIG. 14 is a flowchart showing coordinate axis adjustment processing by the acceleration peak detection unit 1105 and the coordinate axis adjustment unit 1104. Here, description will be made assuming that the predetermined time interval Δt shown in FIG. For example, it is assumed that a predetermined time interval Δt is set for one average crankshaft rotation period of the rider.

  First, the acceleration peak detection unit 1105 acquires the torque applied to the crankshaft from the torque acquisition unit 203 (step S1301). The acceleration peak detection unit 1105 confirms that the acquired torque is a peak value (step S1302). If the acquired torque is not the peak value (step S1302: NO), nothing is done and the process returns to S1301.

  On the other hand, when the acquired torque is the peak value (S1302: YES), the acceleration peak detection unit 1105 determines that the rider has strongly pressed the pedal. The acceleration peak detection unit 1105 initializes the timer t (sets it to 0), and initializes both the first acceleration vector storage flag F1 and the second acceleration vector storage flag F2 to “False”. (Step S1303). The timer t is held in the acceleration peak detection unit 1105, for example.

  Subsequently, the acceleration peak detection unit 1105 confirms whether the absolute value of the first acceleration vector is a peak value (step S1304). If the absolute value of the first acceleration vector is not the peak value (step S1304: NO), the process proceeds to step S1306.

  On the other hand, if the absolute value of the first acceleration vector is the peak value (step S1304: YES), the acceleration peak detection unit 1105 generates the acceleration vector in the bicycle forward direction generated in response to a strong pedal. It is judged that. The acceleration peak detection unit 1105 stores the first acceleration vector in a memory or the like (not shown), and changes the storage flag F1 of the first acceleration vector to “True” (step S1305).

  Subsequently, the acceleration peak detection unit 1105 confirms whether the absolute value of the second acceleration vector is a peak value (step S1306). If the absolute value of the second acceleration vector is not the peak value (step S1306: NO), the process proceeds to step S1308.

  On the other hand, if the absolute value of the second acceleration vector is a peak value (step S1306: YES), the acceleration peak detection unit 1105 generates an acceleration vector in the bicycle forward direction generated in response to a pedal with a strong second acceleration vector. It is judged that. The acceleration peak detection unit 1105 stores the second acceleration vector in a memory (not shown) or the like, and changes the storage flag F2 of the second acceleration vector to “True” (step S1307).

  Subsequently, the acceleration peak detection unit 1105 determines whether or not the first acceleration vector and the second acceleration vector are stored by referring to the storage flags F1 and F2 (step S1308).

  If both the first acceleration vector and the second acceleration vector are stored (step S1308: YES), the acceleration peak detection unit 1105 uses the stored first acceleration vector and second acceleration vector as coordinate axes. The data is sent to the adjustment unit 1104 (step S1309). The case where both are stored is a case where the storage flags F1 and F2 are both “True”.

  Subsequently, the coordinate axis adjustment unit 1104 transmits the first acceleration vector (that is, the acceleration vector 423 in the bicycle advance direction (see FIG. 6)) sent from the acceleration peak detection unit 1105 and the second acceleration vector (that is, the bicycle advancement). Using the direction acceleration vector 426 (see FIG. 6)), coordinate adjustment parameters are calculated (step S1310), and the processing in FIG. 14 is terminated.

  On the other hand, if at least one of the first acceleration vector and the second acceleration vector is not stored in the acceleration peak detection unit 1105 (step S1308: NO), the acceleration peak detection unit 1105 detects the acceleration vector in the bicycle forward direction. It is determined that at least one of 423 and 426 (see FIG. 6) has not been acquired. The case where at least one is not stored is a case where at least one of the storage flags F1, 2 is “False”. Then, the acceleration peak detection unit 1105 counts up the timer t (step S1311).

  Subsequently, the acceleration peak detection unit 1105 confirms whether or not the counted timer t is equal to or less than the predetermined time interval Δt (step S1312). If the timer t is less than or equal to the predetermined time interval Δt (step S1312: NO), the process returns to step S1304.

  On the other hand, if the timer t exceeds the predetermined time interval Δt (S1312: YES), the acceleration peak detection unit 1105 detects the first acceleration vector (ie, the acceleration vector 423 in the bicycle forward direction) by the strong pedaling motion of the rider. And the second acceleration vector (that is, the acceleration vector 426 in the bicycle forward direction) are not detected, and the processing of FIG.

  Incidentally, the crankshaft rotation period varies according to the speed of the bicycle and the gear ratio. Therefore, if the predetermined time interval Δt is set as one cycle of the average crankshaft rotation period of the rider, the crankshaft rotation period becomes smaller than the predetermined time period Δt when the bicycle is high speed or the transmission gear ratio is large. There is. This case has been described with reference to FIGS.

  FIG. 15A is a graph showing the time change of the absolute value of the first acceleration vector. FIG. 15B is a graph showing the time change of the absolute value of the second acceleration vector. FIG. 15C is a graph showing the time change of the torque acquired by the torque acquisition unit 203.

  In the example of FIGS. 15A to 15C, the crankshaft rotation cycle is ½ of the predetermined time interval Δt. Since the left and right cranks are configured to be 180 degrees symmetrical with respect to the crankshaft, when the rider steps on the pedal with both feet, the peak value of the torque is generated twice during one revolution of the crankshaft. 15A to 15C, torque peak values occur at time T0 and time T3 (= T0 + Δt / 2) during a predetermined time interval Δt.

  As described above, even when the torque peak value occurs a plurality of times, the acceleration peak detection unit 1105 determines that the absolute value of the acceleration vector that appears first after the time T0 when the torque peak value is detected is the peak value. The first acceleration vector and the second acceleration vector may be stored.

  That is, as shown in FIG. 15C, the acceleration peak detection unit 1105 confirms whether the torque generated by the strong pedaling at the time T0 is the peak value. As shown in FIG. 15B, the acceleration peak detection unit 1105 checks whether or not the peak value of the absolute value of the second acceleration vector has been detected at time T2 (T2 = T0). Further, as shown in FIG. 15 (A), the acceleration peak detector 1105 detects the absolute value of the first acceleration vector at time T1 (T0 <T1) when the rider pulls back the upper body facing back from the bicycle. Check if peak value is detected. When the peak value of the absolute value of each acceleration vector is detected, the acceleration peak detector 1105 stores the first acceleration vector at time T1 and the second acceleration vector at time T2.

  Further, as shown in FIGS. 15A to 15C, predetermined values Cp and αp are set, and the peak value of the absolute value of the first acceleration vector or the second acceleration vector at time T1 or time T2. An operation when the predetermined value αp is not exceeded will also be described. The predetermined value Cp is a predetermined value of torque. The predetermined value αp is a predetermined value of the first acceleration vector and the second acceleration vector.

  In FIGS. 15A to 15C, the peak value of the torque exceeds a predetermined value Cp at time T0 when the rider strongly pedals, and the absolute value of the second acceleration vector is substantially the same as time T at time T2. Is acquired exceeding a predetermined value αp. In addition, the peak value of the absolute value of the first acceleration vector appearing at time T1 is less than the predetermined value αp due to the detection error of the acceleration sensor. FIGS. 15A to 15C show the relationship between the absolute values of the first acceleration vector and the second acceleration vector and the torque in such a case.

  In the example of FIGS. 15A to 15C, the acceleration peak detector 1105 does not store the first acceleration vector at time T1 that first appears after time T0. Further, the acceleration peak detection unit 1105 ends the detection of the peak values of the absolute values of the first acceleration vector and the second acceleration vector even if the predetermined time interval Δt has not elapsed.

  Subsequently, when a torque peak value exceeding the predetermined value Cp is detected at time T3, the acceleration peak detecting unit 1105 sets the predetermined time interval Δt again as shown in FIG.

  As shown in FIG. 15B, the acceleration peak detector 1105 detects the peak value at which the absolute value of the second acceleration vector exceeds the predetermined value αp at time T5 (T5 = T3) after time T3. And Further, as shown in FIG. 15A, it is assumed that the acceleration peak detection unit 1105 detects the first acceleration vector as a peak value exceeding a predetermined value αp at time T4 (T5 <T4 <T3 + Δt).

  In this case, the acceleration peak detection unit 1105 stores the first acceleration vector at time T4 and the second acceleration vector at time T5 (T5 = T3 = T0 + Δt / 2).

  The acceleration peak detection unit 1105 and the coordinate axis adjustment unit 1104 update the coordinate adjustment parameters while performing the processing of steps S1301 to S1312 as needed or periodically. As a result, even when the direction of the first coordinate axis of the first acceleration acquisition unit 201 changes during riding on the bicycle, the direction of the first coordinate axis can be made to coincide with the direction of the second coordinate axis with high accuracy at any time. The calculation accuracy of can be improved.

  In the fifth embodiment, the description has been made focusing on the acceleration of the bicycle when the pedal is strongly pushed using the torque applied to the crankshaft. Furthermore, the same method can be used when the bicycle decelerates using the braking instruction when the brake lever described in the third embodiment is pulled.

  In this case, the momentum calculation device 100E may further include a braking instruction acquisition unit and the following acceleration peak detection unit in the configuration of FIG. The acceleration peak detection unit stores a first acceleration vector and a second acceleration vector whose absolute values acquired during a predetermined time interval Δt from when the braking instruction is acquired are peak values.

  According to the momentum calculation apparatus 100E, when the directions of the first coordinate axis and the second coordinate axis coincide with each other at any time, the acceleration vector in the bicycle forward direction is detected and used at a certain time from when the rider strongly pushes the pedal. be able to. Therefore, even if the acceleration vector in the bicycle forward direction generated in the upper body is generated with a delay, the directions of the first coordinate axis and the second coordinate axis can be made to coincide with each other with high accuracy.

  Accordingly, the second acceleration vector is removed from the first acceleration vector in which the directions of the coordinate axes are accurately matched, and the acceleration vector of the upper body motion is calculated to calculate the upper body exercise amount. That is, the momentum of the upper body while riding a bicycle can be calculated with high accuracy.

(Sixth embodiment)
FIG. 16 is a block diagram illustrating a configuration example of an exercise amount calculation apparatus according to the sixth embodiment of the present invention. FIG. 16 corresponds to FIG. 2 of the second embodiment. In FIG. 16, the same components as those in FIG.

  The exercise amount calculation device 100F illustrated in FIG. 16 includes a first acceleration acquisition unit 201, a second acceleration acquisition unit 202, a torque acquisition unit 203, a speed acquisition unit 1506, a coordinate axis adjustment unit 1504, and an upper body exercise amount calculation unit 205.

  The speed acquisition unit 1506 acquires the speed of the bicycle on which the rider is riding. As a method of acquiring the speed, for example, a magnetic marker is installed on the wheel. And it is mentioned that a magnetic marker acquires the magnetic field change at the time of passing the magnetic sensor installed in the vehicle body as an electric pulse signal, and calculates speed from the generation cycle of the acquired electric pulse signal.

  The coordinate axis adjustment unit 1504 monitors the bicycle speed acquired from the speed acquisition unit 1506 and the torque value acquired from the torque acquisition unit 203 in advance. The coordinate axis adjustment unit 1504 uses the first acceleration vector and the second acceleration vector at that time when detecting that the acquired bicycle speed is equal to or less than a predetermined value and the acquired torque is a peak value. Thus, the directions of the first coordinate axis and the second coordinate axis are matched. An example of a method for matching the directions of the coordinate axes is the same as the method described in the coordinate axis adjustment unit 204 in the second embodiment.

  The difference between the coordinate axis adjustment unit 1504 of the exercise amount calculation device 100F and the coordinate axis adjustment unit 204 of the exercise amount calculation device 100B in the second embodiment is that the bicycle speed information is newly used. If the speed of the bicycle is less than or equal to a predetermined value, the acceleration in the vertical direction on the bicycle due to the unevenness of the road surface is relatively small, so that it is easy to detect an acceleration vector based on the strong pedaling of the rider.

Next, an operation example of the exercise amount calculation apparatus 100F will be described.
FIG. 17 is a flowchart showing the coordinate axis adjustment processing by the coordinate axis adjustment unit 1504.

  First, the coordinate axis adjustment unit 1504 acquires bicycle speed information from the speed acquisition unit 1506, and acquires torque information from the torque acquisition unit 203 (step S1601).

  The coordinate axis adjustment unit 1504 confirms the acquired speed information (step S1602). If the acquired speed information exceeds a predetermined threshold value (step S1602: NO), the process returns to step S1601.

  On the other hand, if the acquired speed information is equal to or less than a predetermined threshold value (step S1602: YES), the coordinate axis adjustment unit 1504 reduces the acceleration in the vertical direction with respect to the bicycle due to the unevenness of the road surface, thereby reducing the bicycle front and rear. It is determined that the direction acceleration vector is likely to be detected, and it is confirmed whether the torque has a peak value (step S1603). Whether it is a peak value or not is determined, for example, by whether or not it is equal to or more than a threshold value as a peak value.

  If the torque is not the peak value (step S1603: NO), the process returns to S1601 without doing anything. On the other hand, when the torque has a peak value (step S1603: YES), the coordinate axis adjustment unit 1504 determines that it is a time when the rider strongly pedals the pedal. The coordinate axis adjustment unit 1504 calculates a coordinate adjustment parameter using the acceleration vector 423 and the acceleration vector 426 at the time when the torque is a peak value (step S1604).

  The coordinate axis adjustment unit 1504 updates the coordinate adjustment parameters while performing the processes of steps S1601 to S1604 as needed or periodically. As a result, even when the direction of the first coordinate axis of the first acceleration acquisition unit 201 changes during riding on the bicycle, the direction of the first coordinate axis can be made to coincide with the direction of the second coordinate axis with high accuracy at any time. The calculation accuracy of can be improved.

  Note that the method of matching the directions of the coordinate axes using the speed of the bicycle can also be applied to the second to fifth embodiments. In this case, the momentum calculation device of each embodiment may include a speed acquisition unit and a coordinate axis adjustment unit that matches the directions of the coordinate axes when the acquired speed information is equal to or less than a predetermined threshold.

  According to the momentum calculation apparatus 100F, when the directions of the first coordinate axis and the second coordinate axis coincide with each other at any time, the influence of acceleration vectors such as the vertical direction due to road surface unevenness is suppressed when the speed of the bicycle is low. Bicycle longitudinal acceleration vectors can be used. Therefore, the directions of the coordinate axes can be matched more accurately.

  Therefore, the acceleration vector of the upper body motion can be calculated by removing the second acceleration vector from the first acceleration vector in which the directions of the coordinate axes are made to coincide with each other with high accuracy, and the momentum of the upper body can be calculated. That is, the momentum of the upper body while riding a bicycle can be calculated with high accuracy.

  Although the fifth embodiment has been described as an application example to a bicycle, it can also be applied to a vehicle such as a motorcycle. Furthermore, you may combine the content of 3rd-5th embodiment.

(Seventh embodiment)
FIG. 18 is a block diagram illustrating a configuration example of an exercise amount calculation apparatus according to the seventh embodiment of the present invention. FIG. 18 corresponds to FIG. 2 of the second embodiment. 18, the same components as those in FIG. 2 are denoted by the same reference numerals, and description thereof is omitted.

  The exercise amount calculation device 100G illustrated in FIG. 18 includes a first acceleration acquisition unit 201, a second acceleration acquisition unit 202, a torque acquisition unit 203, a coordinate axis adjustment unit 204, an upper body exercise amount calculation unit 205, a crankshaft rotation number acquisition unit 1707, and a lower body exercise amount. A calculation unit 1708 and an output unit 1709 are provided.

  The crankshaft rotation speed acquisition unit 1707 acquires the rotation speed of the crankshaft per unit time. As a method of acquiring the crankshaft rotation speed, for example, the fact that the magnitude of the torque applied to the crankshaft periodically changes depending on the rotation angle of the pedal is used. For example, the crankshaft rotation speed acquisition unit detects the generation period of the torque peak value, and obtains the reciprocal of the value obtained by doubling the generation period as the crankshaft rotation speed. This is because there are two pedals 180 degrees symmetrical with respect to the crankshaft.

  Alternatively, a magnetic marker is installed on the crankshaft, the magnetic field change when passing through a magnetic sensor installed in the rotation operating area of the crankshaft is acquired as an electrical pulse signal, and the reciprocal of the generation cycle of the acquired electrical pulse signal By taking the above, the rotational speed of the crankshaft may be calculated.

  The lower body exercise amount calculation unit 1708 calculates the exercise rate of the lower body exercise of the rider using the torque acquired by the torque acquisition unit 203 and the crankshaft rotation number acquired by the crankshaft rotation number acquisition unit 1707. The work rate of the rider's lower body exercise is calculated using the following formula.

  Power [W] = torque [Nm] × crankshaft rotation speed [rad / sec]

  The lower body exercise amount calculation unit 1708 calculates the exercise amount (calorie consumption) of the lower body of the rider by accumulating the work rate [W] per unit time. Alternatively, it can also be calculated by using a known method such as using a regression equation between the work rate [W] and the amount of exercise determined from the oxygen intake by breath gas analysis.

  The output unit 1709 outputs at least one of the exercise amount of the upper body of the rider calculated by the upper body exercise amount calculation unit 205 and the exercise amount of the lower body of the rider calculated by the lower body exercise amount calculation unit 1708. That is, the output unit 1709 outputs the amount of exercise while riding the bicycle based on the amount of exercise of the upper body and the amount of exercise of the lower body. The exercise amount of the upper body is, for example, an exercise amount for maintaining the upper body posture. Further, the output unit 1709 may output the whole-body exercise amount of the bicycle exercise indicated by the sum of the upper-body exercise amount and the lower-body exercise amount.

  Examples of the output destination include a display having a liquid crystal screen (not shown) and a small portable terminal (for example, an activity meter via a wired connection means or a wireless connection means).

  Note that the method of calculating and outputting the amount of exercise of the lower body can also be applied to the amount of exercise calculation device in the second to sixth embodiments. In this case, a crankshaft rotation speed acquisition unit 1707, a lower body exercise amount calculation unit 1708, and an output unit 1709 may be provided.

  According to the exercise amount calculation device 100G, by removing the second acceleration from the first acceleration, it is possible to acquire acceleration indicating the exercise of only the upper body, and to calculate the exercise amount of the upper body. Furthermore, by calculating the amount of exercise of the lower body and calculating the sum of the amount of exercise of the upper body and the amount of exercise of the lower body, it is possible to calculate the exact amount of exercise of the whole body while riding the bicycle.

(Eighth embodiment)
FIG. 19 is a block diagram illustrating a configuration example of an exercise amount calculation system according to the eighth embodiment of the present invention. In FIG. 19, the same components as those of FIG.

  The so-called activity meter currently on the market detects the motion of a user wearing the activity meter as an acceleration by a built-in acceleration sensor, and calculates the amount of exercise using the fact that the acceleration is proportional to the amount of exercise. The activity meter calculates the user's walking exercise amount, running exercise amount and exercise amount in daily life using an acceleration sensor, and displays or records the exercise amount.

  The exercise amount calculation system 1 illustrated in FIG. 19 includes a portable terminal 1801 and an exercise amount calculation apparatus 100G. The portable terminal 1801 and the exercise amount calculation device 100G are connected via wired communication means or wireless communication means.

  According to the exercise amount calculation system 1, it is possible to accurately calculate the total exercise amount of one day that combines the walking exercise amount, the running exercise amount, the exercise amount in daily life, and the exercise amount while riding the bicycle.

  The exercise amount calculation device 100G corresponds to the exercise amount calculation device 100G described in the seventh embodiment. The exercise amount calculation device 100G outputs at least one of the exercise amount of the upper body while riding the bicycle, the exercise amount of the lower body, or the sum of the exercise amount of the upper body and the lower body (the exercise amount of the whole body while riding the bicycle) as an output unit. 1709.

  The portable terminal 1801 is a small and light device that is worn on the upper body of a user, for example, and is an activity meter, for example. The portable terminal 1801 calculates a walking exercise amount, a running exercise amount, an exercise amount in daily life, or a calorie consumption based on the acceleration acquired by the built-in acceleration sensor.

  The portable terminal 1801 includes a first acceleration detector 1811, a first acceleration transmitter 1812, a receiver 1813, an activity amount calculator 1814, and an output unit 1815.

  For example, when the user is on a bicycle, the first acceleration detection unit 1811 obtains an acceleration vector due to upper body motion and bicycle motion. When the user is not riding a bicycle, the user's walking exercise, running exercise and exercise in daily life are acquired as an acceleration vector. In general, an acceleration sensor is used to acquire the acceleration vector. Since the portable terminal 1801 is worn on the upper body, the acceleration vector acquired by the first acceleration detection unit 1811 when the user is on a bicycle is the first acceleration acquisition unit described in the above embodiment. 201 is the same as the first acceleration vector acquired.

  The first acceleration transmission unit 1812 transmits the upper body motion detected by the first acceleration detection unit 1811 and the acceleration vector due to the bicycle motion during the period when the user is on the bicycle to the first acceleration acquisition unit 201 of the momentum calculation device 100G. Then, transmission is performed using wired communication means or wireless communication means. It should be noted that the transmission of the acceleration vector by the upper body exercise and the bicycle movement may be performed in real time while riding the bicycle, or may be performed periodically while riding, or may be performed collectively after getting off the bicycle.

  The receiving unit 1813 is calculated by the exercise amount calculation device 100G and output by the output unit 1709, and the user is at least one of the upper body exercise amount, the lower body exercise amount, and the whole body exercise amount while riding the bicycle. Is received using wired communication means or wireless communication means.

  The activity amount calculation unit 1814 calculates the basal metabolic rate of the user.

  In addition, the activity amount calculation unit 1814 calculates the upper body exercise amount, the lower body exercise amount while riding the bicycle acquired by the reception unit 1813, or the whole body exercise amount while riding the bicycle, and the activity amount calculation unit 1814 calculates. The sum with the basal metabolism during the period when the user is riding the bicycle is calculated. The activity amount calculating unit 1814 appropriately combines the sum of these, the amount of exercise of the upper body, the amount of exercise of the lower body, the amount of exercise of the whole body, and the amount of basal metabolism in the bicycle acquired by the receiver 1813 (hereinafter referred to as a bicycle). The amount of activity during the boarding period) is output to the output unit 1815. That is, the activity amount calculation unit 1814 outputs information based on each exercise amount and the basal metabolism amount while riding a bicycle.

  The basal metabolic rate can be calculated by using, for example, a known estimation formula using information such as age, sex, height, and weight presented by the National Institute of Health and Nutrition. Therefore, the activity amount calculation unit 1814 calculates a basal metabolic rate based on the information of the user.

  On the other hand, the activity amount calculation unit 1814, in addition to the basal metabolic rate of the user outside the period during which the user is riding on a bicycle, further from the acceleration vector of the user detected by the first acceleration detection unit 1811, It calculates walking momentum, running momentum, and momentum in daily life. The activity amount calculation unit 1814 calculates the sum of each of the walking exercise amount, the running exercise amount, and the exercise amount in daily life, and the basal metabolism calculated by the activity amount calculation unit 1814. Information (hereinafter, the amount of activity during a period when the bicycle is not ridden) is appropriately output to the output unit 1815 by combining these sums with walking exercise amount, running exercise amount, exercise amount in daily life, and basal metabolic rate.

  According to the activity amount calculation unit 1814, it is possible to accurately calculate the amount of exercise of the whole body while riding a bicycle, which cannot be calculated with high accuracy by a conventional activity meter. In addition, by calculating the sum of the whole-body exercise amount while riding this bicycle and the walking exercise amount, running exercise amount, exercise amount in daily life, and basal metabolism amount outside the period while riding the bicycle, an accurate total of the day is calculated. You can get momentum.

  The output unit 1815 is a display device (for example, a liquid crystal display) or a storage medium (for example, a non-volatile memory). The output unit 1815 includes the amount of activity during the period of riding the bicycle calculated by the amount of activity calculating unit 1814, the amount of activity during the period of not riding the bicycle, and the total amount of exercise per day as the sum of all of these. At least one is input from the activity amount calculation unit 1814. When the output unit 1815 is a storage medium, it is read later and displayed on a liquid crystal display, for example, so that the user can check the history of the amount of exercise.

  Next, an operation example of the exercise amount calculation system 1 will be described. FIG. 20 is a flowchart illustrating an operation example of the portable terminal 1801. The operation of the exercise amount calculation device 100G is the same as the operation of the exercise amount calculation device 100G in the seventh embodiment, and thus the description thereof is omitted.

  First, the activity amount calculation unit 1814 checks whether or not it is a period during which the user is riding a bicycle (step S1901). Specifically, the activity amount calculation unit 1814 checks whether data is transmitted and received in real time between the first acceleration transmission unit 1812 and the first acceleration acquisition unit 201 of the exercise amount calculation apparatus 100G. Alternatively, the activity amount calculation unit 1814 checks whether data is transmitted and received in real time between the reception unit 1813 and the output unit 1709 of the exercise amount calculation apparatus 100G. Alternatively, by pressing a button (not shown) or the like prepared in the portable terminal 1801 or the exercise amount calculation device 100G, it is confirmed whether the start and end of riding are within a specified period.

  When the above-mentioned period is a period during which the user is on the bicycle (step S1901: YES), the receiving unit 1813 calculates the amount of exercise for the upper body, the amount of exercise for the lower body, or the amount of exercise for the bicycle calculated by the exercise amount calculation device 100G. At least one of the exercise amounts of the whole body while riding is acquired (step S1902).

  Subsequently, the activity amount calculating unit 1814 calculates a basal metabolic rate during a period in which the user is on the bicycle (step S1903). Subsequently, the activity amount calculation unit 1814 includes an upper body exercise amount, a lower body exercise amount, or a whole body exercise amount while riding the bicycle, a basal metabolic rate during the bicycle ride, Is calculated (step S1904). The activity amount calculation unit 1814 calculates the sum of these values, the amount of exercise of the upper body while riding the bicycle, the amount of exercise of the lower body, the amount of exercise of the whole body while riding the bicycle, and the user calculated by the activity amount calculation unit 1814 is riding the bicycle. At least one of the basal metabolic rate during the period (hereinafter, the amount of activity during the period of riding the bicycle) is output to the output unit 1815. The output unit 1815 outputs the amount of activity during the period of riding the bicycle to a display device such as a liquid crystal display or a storage medium such as a nonvolatile memory (step S1905).

  On the other hand, when the user is out of the period of riding the bicycle (step S1901: NO), the activity amount calculation unit 1814 calculates the walking momentum and the running from the acceleration vector of the user detected by the first acceleration detection unit 1811. The amount of exercise and the amount of exercise in daily life are calculated (step S1906). Next, the activity amount calculation unit 1814 calculates a basal metabolic rate outside the period during which the user is on the bicycle (step S1907). The activity amount calculation unit 1814 calculates the sum of each of the walking exercise amount, the running exercise amount, and the exercise amount in daily life, and the basal metabolism calculated by the activity amount calculation unit 1814 (step S1908). The activity amount calculation unit 1814 outputs at least one of these sums, walking exercise amount, running exercise amount, exercise amount in daily life, and basal metabolism amount (hereinafter referred to as an activity amount during a period of not riding a bicycle) to the output unit 1815. Output. The output unit 1815 outputs the amount of activity during a period when the bicycle is not ridden to a display device such as a liquid crystal display or a storage medium such as a nonvolatile memory (step S1905).

  In the present embodiment, during the period when the user is riding a bicycle, the user's basal metabolic rate is included in the user's upper body exercise amount, lower body exercise amount, or whole body exercise amount calculated by the exercise amount calculation device 100G. Although described as not included, it can also be applied to cases where a basal metabolic rate is included as in the first to seventh embodiments. In this case, the activity amount calculation unit 1814 does not calculate the basal metabolic rate of the user. The upper body exercise amount including the basal metabolic rate is determined by experimentally exercising the upper body, and by calculating the average value of the acceleration vector of the upper body movement over a certain period of time and the oxygen intake obtained from the breath gas analysis. It can be calculated by a regression equation between the momentum. The amount of exercise of the lower body including the basal metabolic rate can be calculated by a regression equation between the work rate of the exercise of the lower body and the amount of exercise obtained from the oxygen intake amount by breath gas analysis.

  Similarly, in the present embodiment, the basal metabolic rate of the user is included in the walking exercise amount, the running exercise amount, and the exercise amount in daily life calculated by the activity amount calculating unit 1814 outside the period when the user is on the bicycle. Although it has been described that there is no basal metabolic rate, it can also be applied. In this case, the activity amount calculation unit 1814 does not calculate the basal metabolic rate outside the period when the user is on the bicycle. The amount of gait, running, and exercise in daily life, including basal metabolism, is the average of the acceleration vector absolute values for each of these exercises and the amount of exercise determined from the oxygen uptake by breath gas analysis. It can be calculated by the regression equation between.

  According to the exercise amount calculation system 1, the activity meter and the exercise amount calculation apparatus 100G in the seventh embodiment are connected by wired communication means or wireless communication means. Therefore, it is possible to accurately calculate the total daily exercise amount including the exact whole body exercise amount and the basal metabolic rate while riding the bicycle.

  In addition, while the activity meter is in a vehicle (for example, a bicycle or a motorcycle), it calculates the amount of exercise by regarding the acceleration of the vehicle as the user's motion. In some cases, calculation was not possible. According to the exercise amount calculation system 1, this point is improved, and an accurate exercise amount performed by the user using the activity meter can be calculated even when the vehicle is in the vehicle.

  Thus, according to the exercise amount calculation device of the above-described embodiment, the exercise amount of the upper half of the bicycle rider can be calculated with high accuracy. Further, by calculating the sum of the amount of movement of the upper body and the amount of movement of the lower body, it is possible to accurately know the amount of movement of the whole body while riding the bicycle. For example, it can be applied as a function of a cycle meter that displays the speed, travel distance, and crankshaft torque of a bicycle, and a portable navigation system for bicycles.

  In addition, by outputting the exercise amount of the whole body while riding the bicycle to the activity meter incorporating the acceleration sensor described in the eighth embodiment, walking exercise amount, running exercise amount, exercise amount in daily life, basal metabolism amount The total amount of exercise per day can be managed.

  Although the eighth embodiment has been described as an application example to a bicycle, it can also be applied to a vehicle such as a motorcycle.

  The present invention is not limited to the configuration of the above-described embodiment, and any configuration can be used as long as the functions indicated by the claims or the functions of the configuration of the present embodiment can be achieved. Is also applicable.

  Although cases have been described with the above embodiment as examples where the present invention is configured by hardware, the present invention can also be realized by software in cooperation with hardware.

  Each functional block used in the description of the above embodiment is typically realized as an LSI that is an integrated circuit. These may be individually made into one chip, or may be made into one chip so as to include a part or all of them. The name used here is LSI, but it may also be called IC, system LSI, super LSI, or ultra LSI depending on the degree of integration.

  Further, the method of circuit integration is not limited to LSI's, and implementation using dedicated circuitry or general purpose processors is also possible. For example, a Field Programmable Gate Array (FPGA) that can be programmed after manufacturing the LSI, connection of circuit cells in the LSI, or a reconfigurable processor whose settings can be reconfigured may be used.

  Further, if integrated circuit technology comes out to replace LSI's as a result of the advancement of semiconductor technology or a derivative other technology, it is naturally also possible to carry out function block integration using this technology. Biotechnology can be applied.

  INDUSTRIAL APPLICABILITY The present invention is useful for an exercise amount calculation device, an exercise amount calculation system, an exercise amount calculation method, and the like that can accurately calculate the amount of exercise while riding in a vehicle.

100, 100B to 100G Exercise amount calculation device 101, 201 First acceleration acquisition unit 102, 202 Second acceleration acquisition unit 103, 205 Upper body exercise amount calculation unit 203 Torque acquisition unit 204, 904, 1104, 1404, 1504 Coordinate axis adjustment unit 501 First Acceleration sensor 502 Second acceleration sensor 1105 Acceleration peak detection unit 1406 Braking instruction acquisition unit 1506 Speed acquisition unit 1707 Crankshaft rotation number acquisition unit 1708 Lower body exercise amount calculation unit 1709 Output unit 1801 Portable terminal 1811 First acceleration detection unit 1812 First One acceleration transmission unit 1813 Reception unit 1814 Activity amount calculation unit 1815 Output unit 1 Exercise amount calculation system

Claims (11)

A first acceleration acquisition unit for acquiring acceleration of an upper body of a vehicle rider;
A second acceleration acquisition unit for acquiring acceleration of the vehicle;
An upper body momentum calculation unit for calculating an amount of momentum of the upper body of the rider of the vehicle using an acceleration obtained by removing the acceleration of the vehicle from the acceleration of the upper body of the vehicle rider;
A momentum calculation device comprising: A first acceleration acquisition unit for acquiring an acceleration vector of an upper body of a vehicle rider;
A second acceleration acquisition unit for acquiring an acceleration vector of the vehicle;
A coordinate axis adjusting unit that matches the coordinate axes of the acceleration vector of the upper body of the rider of the vehicle and the acceleration vector of the vehicle when the vehicle is accelerated or decelerated under a predetermined condition;
An upper body momentum calculating unit that calculates an momentum of the upper body of the vehicle rider using an acceleration vector obtained by removing the acceleration vector of the vehicle from the acceleration vector of the upper body of the vehicle rider having the coordinate axes matched;
A momentum calculation device comprising: The exercise amount calculation apparatus according to claim 2,
The predetermined condition is a momentum calculation device in which an acceleration vector of an upper body of the rider of the vehicle and an acceleration vector of the vehicle simultaneously exceed a first predetermined value. The exercise amount calculation apparatus according to claim 2, further comprising:
A torque acquisition unit for acquiring torque applied to the crankshaft of the vehicle;
The predetermined amount condition is a momentum calculation device in which the torque exceeds a second predetermined value. The momentum calculation device according to claim 2, further comprising:
A braking instruction acquisition unit for acquiring a braking instruction for the vehicle;
The predetermined condition is the momentum calculation device in which the braking instruction exceeds a third predetermined value. The momentum calculation device according to claim 4 or 5, further comprising:
When the torque exceeds the second predetermined value or within a predetermined time from the time when the braking instruction exceeds the third predetermined value, the upper body of the rider of the vehicle exceeding the first predetermined value An acceleration peak detector for detecting an acceleration vector and an acceleration vector of the vehicle;
The coordinate axis adjustment unit uses the acceleration vector of the upper body of the rider of the vehicle and the acceleration vector of the vehicle detected by the acceleration peak detection unit, and the acceleration vector of the upper body of the rider of the vehicle and the acceleration vector of the vehicle Momentum calculation device for matching the coordinate axes of The momentum calculation device according to any one of claims 2 to 6, further comprising:
A speed acquisition unit for acquiring the speed of the vehicle;
The predetermined amount condition is a momentum calculation device including that the speed of the vehicle is equal to or lower than a predetermined value. The exercise amount calculation device according to claim 4, further comprising:
A lower-body exercise amount calculation unit for calculating the lower-body exercise amount of the vehicle rider,
Based on the momentum of the upper body of the rider of the vehicle and the momentum of the lower body of the rider of the vehicle, an output unit that outputs the momentum of the rider of the vehicle riding on the vehicle;
A momentum calculation device comprising: The momentum calculation apparatus according to claim 8, further comprising:
A crankshaft rotation speed acquisition unit for acquiring the rotation speed of the crankshaft per unit time;
The lower body exercise amount calculation unit calculates the exercise amount of the lower body of the rider of the vehicle using the torque acquired by the torque acquisition unit and the crankshaft rotation number acquired by the crankshaft rotation number acquisition unit. apparatus. An exercise amount calculation system that communicates between an exercise amount calculation device and a portable terminal,
The momentum calculation device comprises:
A first acceleration acquisition unit for acquiring an acceleration vector of an upper body of a vehicle rider;
A second acceleration acquisition unit for acquiring an acceleration vector of the vehicle;
An upper body momentum calculation unit for calculating the momentum of the upper body of the rider of the vehicle using an acceleration vector obtained by removing the acceleration vector of the vehicle from the acceleration vector of the upper body of the rider of the vehicle with the coordinate axes matched;
A lower-body exercise amount calculation unit for calculating the lower-body exercise amount of the vehicle rider,
A first output unit that outputs the momentum of the rider of the vehicle based on the momentum of the upper body of the rider of the vehicle and the momentum of the lower body of the rider of the vehicle;
With
The portable terminal is
A momentum acquisition unit for acquiring a momentum of a rider of the vehicle output from the momentum calculation device;
Based on the information on the rider of the vehicle, an activity amount calculating unit for calculating a basal metabolic rate,
A second output unit for outputting information based on the amount of exercise of the vehicle rider and the basal metabolic rate;
A momentum calculation system comprising: A method for calculating momentum in an apparatus for calculating momentum, comprising:
Obtaining acceleration of the upper body of the vehicle rider;
Obtaining acceleration of the vehicle;
Using the acceleration obtained by removing the acceleration of the vehicle from the acceleration of the upper body of the vehicle rider to calculate the momentum of the upper body of the vehicle rider;
A method of calculating momentum.

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