JP2010022740A - Device for measuring quantity of swimming - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for measuring the quantity of swimming, which correctly measures the quantity of swimming regardless of a peripheral environment, and also allows a swimmer to easily confirm a measurement result in water. <P>SOLUTION: The device 1 for measuring the quantity of swimming includes: a motion detecting means 7 for outputting a signal corresponding to the motion of a swimmer; an operation switch 5 for performing an operation and setting, etc.; a display panel 3; and also a control-calculation part 6 for performing various kinds of control and calculation. The control-calculation part 6 is connected to the motion detecting means 7, the operation switch 5 and the display panel 3. The device 1 recognizes a swimming state during the output of a regular signal from the motion detecting means 7, and determines the turns of the swimmer when the swimming state is restarted within a prescribed time after the interruption of the swimming state. The device 1 also determines that the swimmer terminates the swimming when the swimming state is interrupted for a prescribed timer or more. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a swimming amount measuring apparatus for measuring a swimming amount when swimming in a pool or the like.

  2. Description of the Related Art Conventionally, a device that can be worn on the body has been proposed as a swimming amount measuring device that measures the amount of swimming such as the number of turns when swimming in a pool or the like, and the distance swam (see, for example, Patent Document 1).

  A swimming volume measuring device 100 described in Patent Document 1 is shown in FIG. FIG. 8A shows a configuration of the swimming amount measuring apparatus 100, and FIG. 8B shows a state in which the swimming amount measuring apparatus 100 is attached to the swimmer's head. The swimming amount measuring apparatus 100 recognizes the swimmer's traveling direction by detecting the magnetic field lines such as the surrounding geomagnetism by the azimuth detecting means 101 by the magnetic force line direction detecting means, and recognizes that the turn has been made from the reversal of the traveling direction. To do. Alternatively, the swimming amount measuring apparatus 100 detects a change in the swimmer's acceleration by the azimuth detecting means 101 by the acceleration detecting means, and recognizes that the turn has been made from the reversal of the acceleration direction. The distance the swimmer has swam can be calculated from the number of turns made and the distance of one way in the pool.

  In addition, the swimmer performs measurement by attaching the swimming volume measuring device 100 to an extendable band 102a of a cap that covers the head as shown in FIG. 8B, for example. In Patent Document 1, it is also proposed to attach to a swimmer's pants band in addition to the head. Further, in the configuration using the direction detection means 101 by the direction of magnetic force direction detection means, a magnetism generator is disposed at a position separated from the swimmer in an environment where the geomagnetism is weak or an environment where the magnetic field lines are unstable, and the direction is determined by a stable magnetic field. A detection method has also been proposed.

Japanese Patent Laying-Open No. 2005-15296 (second page, FIGS. 1 to 4)

However, the above-described conventional technology has the following problems. The swimming volume measuring device described in Patent Document 1 cannot accurately detect the swimmer's traveling direction in an environment where the magnetic field is disturbed, such as an indoor pool, and accurately recognizes that a turn has been made. There is a problem that can not be. Therefore, it is necessary to dispose the magnetic generator in a place away from the swimmer, and there are problems such as securing the installation location of the magnetic generator and costs.
In addition, the swimming amount measuring device described in Patent Document 1 needs to be attached to a portion whose orientation is stable during swimming, such as the waist, feet, and head, and the measurement result cannot be easily confirmed underwater. is there.

  Therefore, the present invention provides a swimming volume measuring device that solves the above-described problems and can accurately measure the swimming amount regardless of the surrounding environment and can easily check the measurement result in water. Objective.

  In order to solve the above-described problems and achieve the object, the swimming volume measuring device of the present invention adopts the following configuration.

The swimming amount measuring apparatus according to the present invention recognizes a swimming state while an operation detection unit that outputs a signal corresponding to a swimmer's movement and a signal having a regularity is output from the movement detection unit. Computation means for judging that the swimmer has made a turn when the swimming state is resumed within a predetermined time after the interruption, and for calculating the number of turns is provided.

  In addition to the above-described configuration, the swimming amount measuring apparatus of the present invention is characterized in that the calculation means determines that the swimmer has finished swimming when the swimming state is interrupted for a predetermined time or more. is there.

  Furthermore, in addition to the configuration described above, the swimming amount measuring device of the present invention further includes setting means for setting the length of the pool, and the calculating means swims from the calculated number of turns and the length of the pool. The distance is calculated.

  Furthermore, the swimming volume measuring device of the present invention is characterized by comprising setting means for setting a predetermined time in addition to the configuration described above.

  Furthermore, the swimming volume measuring device of the present invention is characterized in that an acceleration sensor is provided as an operation detecting means in addition to the above-described configuration.

  Furthermore, in addition to the configuration described above, the swimming volume measuring device of the present invention is characterized by comprising display means for displaying the result of calculation by the calculation means.

  Furthermore, the swimming amount measuring device of the present invention is characterized by comprising a fixing means for fixing to the wrist of the swimmer in addition to the above-described configuration.

  The swimming amount measuring apparatus according to the present invention recognizes a swimming state while a regular signal is output from the motion detection means, and when the swimming state resumes within a predetermined time after the swimming state is interrupted, the swimmer Is determined to have made a turn. This makes it possible to accurately measure the number of turns regardless of the surrounding environment.

  Moreover, since the swimming amount measuring device of the invention can measure the amount of swimming while attached to the wrist of the swimmer, the measurement result can be easily confirmed without leaving the pool.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Below, the swimming amount measuring device worn on the wrist will be described as an example.

[Description of Configuration: FIGS. 1 to 3]
First, the configuration of the swimming volume measuring device of the present embodiment will be described. FIG. 1 is a configuration diagram of a swimming amount measuring apparatus 1 of the present embodiment. As shown in FIG. 1, the swimming amount measuring device 1 of the present embodiment includes an operation detection unit 7 that outputs a signal corresponding to the swimmer's operation. The motion detection means 7 is constituted by an acceleration sensor, for example. Moreover, the swimming amount measuring apparatus 1 of this embodiment is provided with the operation switch 5 for performing operation, a setting, etc. as a setting means. Furthermore, the swimming amount measuring apparatus 1 of this embodiment includes a display panel 3 that displays various types of information as display means.

Furthermore, the swimming amount measuring apparatus 1 according to the present embodiment includes a CPU, RAM, ROM, and the like as a calculation unit, and includes a control / calculation unit 6 that performs various controls and calculations. The ROM of the control / calculation unit 6 stores programs used for various types of control / calculation. The control / calculation unit 6 is connected to the operation detection means 7, the operation switch 5, and the display panel 3.
The control / arithmetic unit 6 performs a turn determination, a distance a swimmer has swam, a calorie consumption, and the like based on signals input from the motion detection unit 7 and the operation switch 5. Each calculation method will be described later. The control / calculation unit 6 displays information such as a calculation result on the display panel 3.

  Next, the external appearance of the swimming volume measuring device 1 of the present embodiment will be described. FIG. 2 is a perspective view of the appearance of the swimming volume measuring device 1. As shown in FIG. 2, the swimming amount measuring apparatus 1 of the present embodiment includes a waterproof case 2 provided with the display panel 3 described above, and a fixing band 4 (fixing means) for holding the waterproof case 2 on the wrist. The housing which becomes. The control / calculation unit 6 described above is disposed inside the waterproof case 2. The detailed configuration of the display panel 3 will be described later. Moreover, the swimming amount measuring device 1 of this embodiment includes the operation switch 5 in the waterproof case 2.

  The swimmer puts the fixing band 4 on his / her wrist so that the display panel 3 provided on the waterproof case 2 can be confirmed by the swimmer. The fixing band 4 is fixed with a force that does not shift the mounting position of the swimming amount measuring device 1 during swimming.

  Next, the structure of the display panel 3 in the swimming amount measuring apparatus 1 of the present embodiment will be described. FIG. 3 is an explanatory diagram illustrating a configuration example of the display panel 3. As shown in FIG. 3, the display panel 3 includes a one-way distance display unit 11 that indicates a one-way distance that the swimmer swims, and a turn number display unit 12 that indicates the number of times the swimmer has made a turn during swimming. The display panel 3 includes a swimming distance display unit 13 indicating the total distance that the swimmer has swam and a calorie consumption display unit 14 indicating the calorie consumption of the swimmer. The display positions, display sizes, and the like of the display units 11 to 14 shown in the present embodiment are not particularly defined, and may be freely determined from design, visibility, and the like.

[Description of Operation: FIGS. 4 to 6]
Next, operation | movement of the swimming amount measuring apparatus 1 of this embodiment is demonstrated. FIG. 4 is a flowchart showing an operation example of the swimming volume measuring device 1.

First, the swimming volume measuring device 1 displays a form for inputting a one-way distance (pool length) on the display panel 3 (step 1). The user operates the operation switch 5 to input a one-way distance (step 2).
Thereafter, the control / calculation unit 6 confirms the inputted one-way distance (step 3). If there is no mistake in the inputted one-way distance, the one-way distance display unit 11 of the display panel 3 displays the one-way distance, and the process proceeds to a mode for detecting a swimming state. If there is an error in the inputted one-way distance, the display returns to the input form display in step 1.

In the swimming state detection mode, the control / calculation unit 6 starts acquiring and analyzing the electrical signal from the motion detection means 7 (step 4). Here, a method for analyzing the signal from the motion detection means 7 by the control / calculation unit 6 in the processing after step 5 will be described.
First, the movements of the swimmer's arms during swimming will be described. FIG. 5 is an explanatory view of the movement of the arm while the swimmer is swimming. FIG. 5 shows, as an example, a state in which the movement (scrolling) of one arm when swimming in a crawl is continuously observed from the side. As shown in FIGS. 5A to 5F, the swimmer's arm 21 during swimming repeats a regular operation at a constant rhythm.

  FIG. 6 is an explanatory diagram showing the change over time of the signal output from the motion detection means 7. FIG. 6 shows an example of a signal output from the motion detection means 7 when the swimmer swims in the crawl as shown in FIG. FIG. 6 shows an example of an electrical signal 8 (output voltage) using an acceleration sensor as the motion detection means 7. When the swimmer performs swimming by attaching the swimming amount measuring device 1 of the present embodiment to the wrist, the acceleration sensor outputs an electrical signal corresponding to the movement of the wrist of the swimmer.

Here, when the acceleration sensor accelerates in the same direction as the swimmer's traveling direction, it outputs a positive voltage with respect to the reference voltage (output voltage in a state where acceleration is not applied). When accelerating in the opposite direction, it is assumed that a negative voltage is output relative to the reference voltage.

  In the state where the swimmer shown in FIGS. 5A to 5D rotates the arm in the direction opposite to the traveling direction, the wrist portion accelerates in the direction opposite to the traveling direction, and thus a negative voltage is output from the reference voltage. Further, in the state where the swimmer shown by D to A in FIG. 5 rotates his / her arm in the traveling direction, the wrist portion accelerates in the traveling direction, so that a positive voltage is output from the reference voltage.

While shown in S ₁ in FIG. 6, an arm fitted with a swimming quantity measuring apparatus 1 performs a scrolling operation of returning to the A through D from A in FIG. Also during a period in S ₂ in FIG. 6, the other arm performs a scroll operation. While shown in this S ₂ is arms fitted with swimming quantity measuring apparatus 1 is to take a posture in which almost stopped at the position shown by A in FIG. 5, the voltage of the reference voltage vicinity outputted from the acceleration sensor.
Arm fitted with swimming quantity measuring apparatus 1 is the period S ₁ to perform the scrolling operation, the other arm in the period S ₂ to perform the scrolling operation, a period S for performing one stroke operation.

As shown in FIG. 6, when the reference voltage is lower than the reference voltage, a second threshold voltage Vth2 higher than the reference voltage is provided. In the state shown in A through D in FIG. 5, a negative voltage is output from the reference voltage below the first threshold voltage Vth1 at point P _1. Further, in the state shown in A from D in FIG. 5, a positive voltage is output from the reference voltage exceeds the second threshold voltage Vth2 at point P _2.

Further, as shown in FIG. 6, the time between the point P ₁ and point P ₂ and T _1, the time between the point P ₁ at the point P ₁ and the next stroke motion in a certain stroke motion and T _2.
In step 5 of FIG. 4, the control / calculation unit 6 determines that the scroll operation has been performed if the time T ₁ is less than a predetermined time T _m1 (for example, 1 second) as in the following conditional expression (1). To do.
T ₁ <T _m1 (1)

The control and calculation unit 6 determines the state of the bathers from the time T _2. In Step 5, as in the condition (2), time T ₂ is less than T _{m @ 2 (e.g.,} 2 seconds), it is determined that the stroke motion is swimming state since it has been continuously performed.
T ₂ <T _m2 (2)
If it is determined in step 5 that the state is a swimming state from the conditional expressions (1) and (2), the process of step 5 is performed again.

If it is determined in step 5 that the vehicle is not in a swimming state, it is determined whether a turn operation has been performed (step 6). As in conditional expression (3), if the time T ₂ is equal to or greater than T _m2 (for example, 2 seconds) and less than T _m3 (for example, 5 seconds), it is determined that the swimming state has been resumed by performing the turn operation. To do.
T _m2 ≦ T ₂ <T _m3 (3)

  If it is determined in step 6 that a turn operation has been performed, the number of turns is updated (step 7), and the process of step 5 is performed again.

If it is not determined in step 6 that the turn motion has been performed, it is determined whether swimming has ended (step 8). As conditional expression (4), the time T ₂ is equal to T _{m3 (e.g.} 5 seconds), it is determined that swimming is finished.
T _m3 ≦ T ₂ (4)
If it is not determined in step 6 that swimming has ended, the process of step 5 is performed again.

  FIG. 7 shows an example of signals output from the motion detection means 7 from the start of swimming to the end of swimming. FIG. 7 shows an example of a signal output from the motion detection means 7 when the swimmer swims in the crawl using an acceleration sensor as the motion detection means 7 as in FIG.

The processing in steps 4 to 8 will be described with reference to FIG. After the start of the process of step 4, the swimmer starts swimming. While shown in G of FIG. 7, in step 5, with scrolling according to the conditional expression (1) is determined to have been performed, the time between the points P ₁ between each stroke (T _{g1, T g2,} · · _-Tgx ) satisfies the conditional expression (2), so that it is determined as a swimming state.

Further, after the end of the period indicated by G, the time T _h to the next swim state resumes not satisfy the conditional expression (2), at step 6 satisfies the conditional expression (3) and turning operation has been performed To be judged. Thereafter, in step 7, the number of turns is updated.
While indicated by I in FIG. 7, in step 5, the conditional expression (1) is satisfied, and the time (T _i1 , T _i2 ,... T _ix ) between the points P ₁ between the strokes is the conditional expression ( By satisfying 2), it is judged as a swimming state.

Since the time T _j after the end of the period indicated by I does not satisfy the conditional expressions (2) and (3) and satisfies the conditional expression (4), it is determined in step 8 that swimming has ended.

After determining the end of swimming, the control / calculation unit 6 calculates the total distance and calories burned by the swimmer (step 9). The total swimming distance Lt that the swimmer has swam is calculated from the following formula (5) from the one-way distance (pool length) Lp input in step 2 and the number of turns tn measured in step 7. be able to.
Lt = Lpx (tn + 1) (5)

The calorie consumption calculation is based on information such as calorie consumption per unit time, swimming time, swimmer's weight, and commonly known correction factors for age and gender. It can be calculated from
The swimming time can be obtained by storing the time that the control / calculation unit 6 determines to be in the swimming state. The weight, age, gender, and swimming events are input in advance (eg, step 2), and the calorie consumption is calculated by storing the correction coefficient and calorie consumption per unit time in the ROM of the control / calculation unit 6. It can be performed.

  After the calculation of the total distance and calorie consumption that the swimmer has swam, the display panel 3 displays the result of measurement and calculation (step 10). As shown in FIG. 3, the turn number display unit 12 displays the number of turns tn, the swimming distance display unit 13 displays the total swimming distance Lt, and the calorie consumption display unit 14 displays the calorie consumption. To do. As a result, the operation shown in FIG. 4 ends.

  In step 4 of FIG. 4 described above, it is determined that the scroll operation has been performed when the point between the points exceeding (or falling below) the two threshold values (the first and second threshold voltages) is less than a predetermined time. It may be determined that the scroll operation has been performed when the output voltage exceeds (or falls below) one threshold value.

Also the _{T m1, T m3, T} m3 used in the above-mentioned conditional expressions (1) to (4), may be set to any value by operating the operation switch 5. This makes it possible to measure the amount of swimming according to the swimmer's (user's) way of swimming, such as the speed of the stroke operation and the time required for the turn.

  Moreover, in the swimming amount measuring apparatus 1 of this embodiment mentioned above, although the example provided with an acceleration sensor as the motion detection means 7 was shown, this invention is not limited to this, For example, the angular velocity sensor which detects an angular velocity May be used as the motion detection means 7. In addition, in an outdoor environment where the magnetic field is stable, a magnetic sensor that detects magnetism is used as the motion detection means 7, and even if a swimmer's motion is detected from the change in the magnetic field detected by the magnetic sensor. Good.

  The swimming amount measuring apparatus according to the present invention recognizes a swimming state while a regular signal is output from the motion detection means, and swims when the swimming state resumes within a predetermined time after the swimming state is interrupted. Determines that the person has made a turn. Moreover, the swimming amount measuring device of the present invention determines that the swimmer has finished swimming when the swimming state is interrupted for a predetermined time or more. This makes it possible to accurately measure the number of turns and calculate the total distance that the swimmer has swam, regardless of the surrounding environment.

  Moreover, since the swimming amount measuring device of the invention can measure the amount of swimming while attached to the wrist of the swimmer, the measurement result can be easily confirmed without leaving the pool.

It is explanatory drawing which shows the structure of the swimming amount measuring apparatus of this embodiment. It is explanatory drawing which shows the external appearance of the swimming amount measuring apparatus of this embodiment. It is explanatory drawing which shows the structure of the display panel in the swimming amount measuring apparatus of this embodiment. It is a flowchart which shows the operation example of the swimming amount measuring apparatus of this embodiment. It is explanatory drawing which shows operation | movement of the swimmer's arm during swimming. It is explanatory drawing which shows the example of a signal output from the operation | movement detection means of this embodiment. It is explanatory drawing which shows the example of a signal output from the operation | movement detection means of this embodiment. It is explanatory drawing of the conventional swimming amount measuring apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Swimming amount measuring device 2 Waterproof case 3 Display panel 4 Fixed band 5 Operation switch 6 Control / calculation part 7 Motion detection means 8 Electric signal 11 One-way distance display part 12 Turn number display part 13 Swimming distance display part 14 Consumption calorie display part 21 Arm

Claims (7)

Motion detection means for outputting a signal corresponding to the motion of the swimmer;
While the regular signal is output from the motion detection means, it is recognized as a swimming state, and after the swimming state is interrupted, the swimmer makes a turn when the swimming state resumes within a predetermined time. And a calculating means for calculating the number of turns. The swimming amount measuring apparatus according to claim 1, wherein the calculation unit determines that the swimmer has finished swimming when the swimming state is interrupted for the predetermined time or longer. A setting means for setting the length of the pool;
The swimming amount measuring device according to claim 1 or 2, wherein the calculating means calculates a distance that the swimmer has swam from the calculated number of turns and the length of the pool. The swimming volume measuring device according to any one of claims 1 to 3, further comprising setting means for setting the predetermined time. The swimming volume measuring apparatus according to claim 1, further comprising an acceleration sensor as the motion detection unit. The swimming amount measuring apparatus according to claim 1, further comprising a display unit that displays a result of the calculation performed by the calculation unit. The swimming volume measuring device according to claim 1, further comprising a fixing unit that fixes the wrist of the swimmer.

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