JP2003123051A - Electronic measuring equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide electronic measuring equipment capable of measuring a required time, a moving distance or a speed or the like by a unit of each repetitive operation in repetitive movement. SOLUTION: A repetitive operation detection sensor 11 detects the time at which the repetitive operation is performed respectively and outputs detection signals notifying detection. On the basis of the outputted detection signals, a repetitive operation time calculation part 12 calculates the time required for one repetitive operation for the respective repetitive operations. On the basis of the data of the repetitive operation time calculated by the repetitive operation time calculation part 12, a data calculation part 13 calculates either a distance having advanced in one repetitive operation or the speed for the respective repetitive operations. The distance having advanced in one repetitive operation or the speed calculated by the data calculation part 13 is displayed at a display part 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device that measures various data in repetitive exercise.

[0002]

2. Description of the Related Art Swimming has attracted attention as well as walking or jogging for maintaining or improving health. Conventionally, the skill of swimming was evaluated only at the lap time in the 25m pool or the 50m pool. In the competition,
Many people record the section record every 10 meters, but it is only measured at a large tournament once a year. Recently, as a method of providing data to athletes,
There is a need for a way to provide data immediately after the competition when the players still have the feeling of being in the competition. By comparing the player's own feelings with objective data, the player
I am beginning to feel that there is an advantage that I can grasp the weaknesses of the players that I have not been able to grasp until now. For this reason, there is an increasing demand for measuring every time in daily training. In addition, swimming is available at elementary schools, middle schools, high schools,
It is widely used in universities and the general public, and there is a great demand for a device that can scientifically indicate the skill of swimming.

As an apparatus for quantitatively measuring movement in water, for example, an apparatus to which a pedometer is applied is an actual Kaihei 6-70.
No. 041 (reference 1). In the underwater motion counter described in Document 1, it is detected that the repetitive motion in the repetitive motion in water is performed, and the number of repetitive motions is measured. In addition, the distance that the subject swims is calculated from the number of repeated movements and the repeated movement distance input in advance.

Japanese Unexamined Patent Publication No. 8-285967 (Reference 2)
In the swimmer goggles that perform electronic time measurement described in, the latest output value and the previous one output value of the accelerometer output by the repeated operation of the swimmer are compared by the comparator, and the swimming state And the turn are identified, and the lap time and the total time, which are section records from one end of the pool to the other end, are measured. Further, in the motion index measuring device described in Japanese Patent Application Laid-Open No. 10-290854 (Document 3), a change in acceleration with the passage of time of repetitive motion in repetitive motion is detected by an acceleration sensor, and a signal from the acceleration sensor is detected. The number of repeated operations per unit time (hereinafter referred to as the pitch) is obtained by performing the FFT process on the. Then, the velocity is obtained by using the pitch and the repeated movement distance. In the present specification,
The “repetitive operation distance” means a distance to advance in one repetitive operation.

[0005]

However, in the devices described in the above-mentioned respective documents, it is impossible to measure data such as required time, moving distance or speed in units of each repetitive motion in repetitive motion. There was a problem. First, in the underwater motion counter described in Document 1, it is detected that the repetitive motion in the repetitive motion in water is performed, and the number of repetitive motions is measured.
However, only the number of times is measured, and the time cannot be measured. In addition, the distance that the person swims is calculated from the number of repeated movements and the previously input repeated movement distances, but the repeated movement distances used here are average values, and for each of the repeated movements. The distance that the subject swims is not calculated accurately because it is not obtained.

In the swimmer goggles for electronic time measurement described in Reference 2, among the outputs of the accelerometer by the repeated operation of the swimmer, the latest output value and one previous output value are compared by the comparator. The swimming state and the turn are identified, and the lap time and the total time, which are section records from one end of the pool to the other end, are measured. However, only the time in a predetermined section is measured, and the time cannot be measured in units of each repeated operation. Also, reference 3
In the motion index measuring device described in [1], a change in acceleration with the passage of time of repetitive motion in repetitive motion is detected by an acceleration sensor, and a signal from the acceleration sensor is FF.
The pitch is obtained by performing T processing. However, the pitch obtained here is an average value in a predetermined section, and it is not possible to obtain the repetitive operation time in units of each repetitive operation. In addition, although the speed is obtained using the pitch and the repeated movement distance, the repeated movement distance used here is an average value and is not obtained for each of the repeated movements.
The speed cannot be calculated accurately. In the present specification, the “repeating operation time” means the time required for one repeating operation.

The present invention has been made in order to solve the above problems, and it is possible to measure data such as required time, moving distance, speed, etc. in units of each repetitive motion in repetitive motion. The purpose of the present invention is to provide a new electronic measuring device.

[0008]

In order to achieve such an object, the electronic measuring instrument according to the present invention detects each time when a repetitive motion is performed in repetitive motion and notifies the detection of the repetitive motion. Based on the repetitive motion detection sensor that outputs a detection signal and the repetitive motion detection sensor, the repetitive motion time is calculated for each repetitive motion, with the time required for one repetitive motion as the repetitive motion time. And a repeating operation time calculating means.

According to the electronic measuring instrument having the above-mentioned configuration, the repetitive motion detection sensor detects each time when the repetitive motion is performed in the repetitive motion, and the detection signal for notifying the detection of the repetitive motion is output. It Then, the repetitive operation time calculation means, based on the detection signal output from the repetitive operation detection sensor,
The time required for one repetitive operation is calculated for each repetitive operation time.

Further, the electronic measuring instrument according to the present invention, based on the data of the repetitive operation time calculated by the repetitive operation time calculating means, for each of the repetitive operations, one of the distance and the speed at which the repetitive operation advances. It is characterized by further comprising a data calculation means for calculating and a display means for displaying either one of the distance and the speed, which is calculated by the data calculation means, for one repetitive operation.

The inventor of the present application has found that there is a fixed relationship between the repetitive operation time and the repetitive operation distance in the repetitive operation in the repetitive motion. If this relationship is used, the data calculation unit can calculate the repetitive operation distance for each repetitive operation based on the repetitive operation time calculated by the repetitive operation time calculation unit. Therefore, the repetitive operation distance can be accurately calculated. Then, the speed is accurately calculated by calculating the accurate repeated movement distance. Further, the display means displays information on the distance or speed at which the repetitive operation is performed once.

In the electronic measuring instrument according to the present invention, the data calculation means removes the data of the repeated operation time exceeding the predetermined threshold value based on the data of the repeated operation time calculated by the repeated operation time calculation means. , The distance traveled in a repetitive operation time exceeding a predetermined threshold is subtracted from the total movement distance, and for each repetitive operation, one of the distance and the speed to advance in one repetitive operation is calculated.

In the calculation of the repetitive operation distance or speed, the data calculating means excludes the data of the repetitive operation time exceeding the predetermined threshold value based on the data of the repetitive operation time calculated by the repetitive operation time calculating means. Then, only the repetitive motion related to the normal repetitive motion is selected. Further, by subtracting the distance traveled during the repetitive operation time exceeding the predetermined threshold value from the total travel distance, only the travel distance related to the normal repetitive operation is obtained. Thus, by using the threshold value for the repetitive operation time, the normal repetitive operation and the special repetitive operation are discriminated and only the repetitive operation time related to the normal repetitive operation is selected. For each of the above, the repetitive movement distance or speed is accurately calculated.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of an electronic measuring instrument according to the present invention will be described in detail below with reference to the drawings. In the description of the drawings, the same elements will be denoted by the same reference symbols, without redundant description.

FIG. 1 is a block diagram showing the configuration of an embodiment of an electronic measuring device according to the present invention. The electronic measuring instrument 1 according to the present embodiment detects the time at which the repetitive motion in the repetitive motion is performed and outputs the detection signal for notifying the detection of the repetitive motion, and the repetitive motion detection time. A repetitive operation time calculation unit 12 for calculating, a data calculation unit 13 for calculating one of the repetitive operation distance and the speed, and a display unit 14 for displaying one of the repetitive operation distance and the speed are provided.

The repetitive motion detecting sensor 11 detects each time when the repetitive motion in the repetitive motion is performed and outputs a detection signal for notifying the detection of the repetitive motion. The repetitive operation time calculation unit 12 calculates the time required for one repetitive operation for each repetitive operation based on the detection signal output from the repetitive operation detection sensor 11. The data calculation unit 13 excludes the data of the repetitive operation time exceeding the predetermined threshold value based on the data of the repetitive operation time calculated by the repetitive operation time calculation unit 12, and proceeds in the repetitive operation time exceeding the predetermined threshold value. By subtracting the distance from the total movement distance, for each of the repeated motions, either one of the distance and the speed at which the repeated motion is advanced is calculated.
The display unit 14 displays one of the distance and the speed, which is calculated by the data calculation unit 13 and which advances in one repetitive operation.

Here, as the repetitive motion detection sensor 11, for example, an acceleration sensor is preferably used.
Further, an acceleration sensor may be attached to the headband of the swimming cap or goggles so that the time when the repeated motion is performed can be detected from the vertical motion of the head. It is also possible to use a sensor capable of detecting landing as the repetitive motion detection sensor 11 to detect the time at which the repetitive motion is performed. It is also good to take a video of the swimmer and detect the time when the swimmer's head is raised from the captured image as the time at which the repetitive motion is performed, and perform image processing on the captured image. The time when the repeated operation is performed may be automatically detected.

In the electronic measuring instrument 1, the repetitive motion detection sensor 11 detects each time when the repetitive motion is performed in the repetitive motion, and outputs a detection signal for notifying the detection of the repetitive motion. Based on the detection signal output from the repetitive motion detection sensor 11, the repetitive motion time calculation unit 12 calculates the time required for one repetitive motion for each repetitive motion. Then, the data calculation unit 13 removes the data of the repetitive operation time exceeding the predetermined threshold value based on the data of the repetitive operation time calculated by the repetitive operation time calculation unit 12, and the repetitive operation time exceeding the predetermined threshold value. The distance traveled in is subtracted from the total distance traveled,
Either one of the distance and the speed to travel is calculated by one repetition operation. Any one of the distance and the speed, which is calculated by the data calculation unit 13 and advances in one repetitive operation, is displayed by the display unit 14.

The effects of the electronic measuring device according to this embodiment will be described. In the electronic measuring instrument 1 described above, the repetitive motion detection sensor 11 detects each time when the repetitive motion is performed in the repetitive motion and outputs a detection signal for notifying the detection of the repetitive motion. Then, the repetitive operation time calculation unit 12 can calculate the time required for one repetitive operation for each repetitive operation time based on the detection signal output from the repetitive operation detection sensor 11.

If the relationship between the repetitive operation time and the repetitive operation distance is used, the repetitive operation distance is calculated for each repetitive operation by the data calculation unit 13 based on the repetitive operation time calculated by the repetitive operation time calculation unit 12. Is calculated, the repetitive movement distance is accurately calculated. Then, the speed is accurately calculated by calculating the accurate repeated movement distance. Further, the display unit 14 displays information on the distance or speed at which the repetitive operation is performed once.

Further, the data calculating unit 13 removes the data of the repetitive operation time exceeding the predetermined threshold value from the data of the repetitive operation time calculated by the repetitive operation time calculating unit 12, so that the normal repetitive operation is performed. Only repetitive motions related to are selected. Further, by subtracting the distance traveled during the repetitive operation time exceeding the predetermined threshold value from the total travel distance, only the travel distance related to the normal repetitive operation is obtained. in this way,
By using the threshold value for repetitive operation time, it is possible to distinguish between normal repetitive operation and special repetitive operation,
Since only the repetitive operation time relating to the normal repetitive operation is selected, the repetitive operation distance or speed is accurately calculated for each of the repetitive operations.

Here, the method of calculating the repetitive operation time using the electronic measuring device 1 described above will be specifically described by taking swimming as an example. First, in order to detect a repeated motion in swimming, the repeated motion detection sensor 11 is used to detect the time at which the repeated motion is performed. Specifically, an acceleration sensor is used as the repetitive motion detection sensor 11, and the accelerometer is attached to the wrist so that the time at which the repetitive motion is performed can be detected from the movement of the arm in the vertical direction or the front-back direction. . Here, the time when the arm extends forward is detected from the acceleration waveform.

FIG. 2 is a flow chart showing a flow in which the time at which the repetitive operation is performed is detected by the repetitive operation detecting sensor 11. First, the repetitive motion detection sensor 11 outputs an acceleration waveform according to the repetitive motion (step S1). Examples of the acceleration waveform output from the repetitive motion detection sensor 11 are shown in FIGS. 3 and 4. Figure 3
Is a graph showing an acceleration waveform when swimming by crawling, where the vertical axis represents acceleration and the horizontal axis represents time. See also FIG.
Is a graph showing an acceleration waveform when swimming in a breast (breaststroke), where the vertical axis represents acceleration and the horizontal axis represents time. Next, the acceleration waveform output from the repetitive motion detection sensor 11 is subjected to high frequency removal filter processing for removing high frequency components and extracting basic frequency components (step S2). Then, the minimum value or the maximum value in each cycle of the acceleration waveform is detected (step S3). Since the time at which the minimum value or the maximum value is detected in S3 corresponds to the time at which the repetitive operation is performed, the time at which the minimum value or the maximum value is detected at S3 is detected as the time at which the repeated operation is performed. (Step S4). Finally, a detection signal for notifying the detection of the repeated operation is output (step S5). In this way, based on the detection signal output from the repetitive motion detection sensor 11, the repetitive motion time calculation unit 12 calculates the repetitive motion time for each repetitive motion.

FIG. 5 shows 400 m in a 50 m pool.
It is a graph showing a part of the result of detecting repetitive movements during the individual medley competition, in which the vertical axis represents the repetitive movement time and the horizontal axis represents the number of repetitive movements. Further, the period T1 is a period of swimming with a butterfly, the period T2 is a period of swimming with a back (backstroke), the period T3 is a period of swimming with breasts, and the period T4 is a period of swimming with a crawl. In the repetitive motion in the swimming race, the repetitive motion time from the time after the turn is made until the normal repetitive motion is detected is longer than the repetitive motion time by the normal repetitive motion. That is, in FIG. 5, the part where the repetitive operation time is long in the middle is due to the operation after the turn is made and before the normal repetitive operation is started. The swimming distance between the portion where the repeated operation time is long and the portion where the repeated operation time is next long is 50 m, which is the length of the pool.

Further, it can be seen from FIG. 5 that the repeating operation time differs depending on the item. Specifically, the period T1 when swimming in the butterfly and the period T3 when swimming in the breast
Has a tendency to lengthen the repeated operation time because both hands are moved at the same time, and during the period T2 when swimming in the back and the period T4 when swimming in the crawl, the repeated operation time tends to be shortened because the arms are alternately moved to the left and right.

Further, a method of calculating the repetitive movement distance and the speed will be specifically described. In the data of the repeated operation time calculated by the repeated operation time calculation unit 12, the data calculation unit 13 determines the dive or turn period from the repeated operation time, and determines the pool length 5
It is divided into data of repeated operation time every 0 m. Here, for the determination of the dive or turn period, a determination method using a preset threshold value is used. For example, in the case of a swimming race, the repetitive operation time is about 2 seconds to 2.5 seconds, and the time required for diving or turning is 3 seconds to 4 seconds or more, depending on the event or the skill of the athlete. From this, it is considered that the repetitive operation time is at least 3 seconds or more when the user jumps or turns. Therefore, as a concrete threshold value, it is preferable to set the threshold value to 3 seconds. Alternatively, the threshold may be set to a numerical value other than the above in consideration of other conditions. In this way, the repetitive operation distance is calculated from the repetitive time data divided for each pool length.

The data calculator 13 can calculate the repetitive motion distance by using the relationship that the repetitive motion distance is substantially proportional to the repetitive motion time. That is, the pool length is D and the repeated operation time data string is s.
When st1, st2, ..., Stn are used, it is possible to calculate the repeated motion distance by internally dividing the pool length D using stn. Specifically, the integrated value of the time series is I
If S = Σ (stn), the repetitive operation distances d1 and d
2, ..., dn can be calculated by dn = D × (stn) / IS. However, it is necessary to deduct that amount from the pool length D for the distance to jump or turn.
For the distance to jump or turn, the relationship between the distance to jump or turn and the time required to jump or turn is measured in advance, and by using this relationship, the normal distance after diving or turning The distance to jump or turn can be calculated based on the time until the repeating operation starts.

FIG. 6 is a table showing the relationship between the time required for a dive or turn and the distance traveled by the dive or turn.
It is obtained by averaging after several trials. The time required for diving or turning means the time required for the swimmer to start a normal repetitive motion after diving or turning. The distance traveled by a dive or turn means the distance traveled after the swimmer dives or makes a turn before starting a normal repetitive motion. In the breast, one scratch and one strike can be performed underwater, but this is different from the normal repetitive motion, so it is included in the period during which the turn is performed. In addition, in the back and butterfly, it is Basaro (the technique of using the dolphin kick to dive after the start or turn)
Can move in water, and the number of repetitive operations and the moving distance during that time are considerably different. Therefore, the number of repetitive movements and the movement distance while moving in water with Basalo are separately measured, and the accuracy of calculating the repetitive movement distance is corrected by correcting the number of repetitive movements while moving in water with Basalo. Can be raised. Further, in order to improve the accuracy of calculating the repetitive movement distance, the moving distance according to the repetitive movement is obtained by performing image processing on the image captured by the video, and the movement distance thus obtained is used. May be.

FIG. 7 is a graph showing the results of calculating the repetitive movement distance when the breast travels 50 m back and forth in a 400 m individual medley competition, where the vertical axis is the repetitive movement distance and the horizontal axis is the number of repetitive movements. . Also, A
1 indicates the repetitive operation distance on the outward path, and A2 indicates the repetitive operation distance on the return path. It can be seen from FIG. 7 that the repeated motion distance can be calculated for each of the repeated motions.

The method used in the present invention is basically based on the time required for one repetitive motion in repetitive exercise, and can be applied not only to swimming but also to other sports. Further, the electronic measuring device according to the present invention is not limited to the above-described embodiment, and various modifications can be made. For example, the electronic measuring device according to the present invention may be configured so as to be separated into a repetitive motion detection device and a data calculation device. Here, the repetitive operation detecting device has a function of detecting the time when the repetitive operation is performed, a function of recording the detected time of the repetitive operation, and a function of outputting the recorded data. . Further, the data calculation device has a function of calculating a repetitive operation time based on the data output from the repetitive motion detection device, a function of calculating a repetitive operation distance or speed, and a function of displaying the repetitive operation distance or speed. Shall have.

Further, it is possible to calculate the energy consumption from the data such as the repeated operation time or the repeated operation distance calculated by the electronic measuring device according to the present invention. By calculating energy consumption, not only health management such as dieting but also grasping the amount of exercise of diabetic patients or grasping the amount of exercise of athletes can be used as objective information on lifestyle habits. It can be applied.

[0032]

As described in detail above, according to the electronic measuring apparatus of the present invention, the repeated motion detection sensor detects each time when the repeated motion is performed in the repeated motion, and the repeated motion is detected. A detection signal for notifying the detection of is output. Then, the repetitive operation time calculation means can calculate the time required for one repetitive operation for each repetitive operation time based on the detection signal output from the repetitive operation detection sensor.

By utilizing the relationship between the repetitive operation time and the repetitive operation distance, the data calculating means obtains the repetitive operation distance for each repetitive operation based on the repetitive operation time calculated by the repetitive operation time calculating means. Therefore, the repetitive operation distance is accurately calculated. Then, the speed is accurately calculated by calculating the accurate repeated movement distance. Further, the display means displays information on the distance or speed at which the repetitive operation is performed once.

Further, in the calculation of the repetitive operation distance or speed, the data calculating means removes the data of the repetitive operation time exceeding the predetermined threshold value based on the data of the repetitive operation time calculated by the repetitive operation time calculating means. By doing so, only the repetitive operation related to the normal repetitive operation is selected. Further, by subtracting the distance traveled during the repetitive operation time exceeding the predetermined threshold value from the total travel distance, only the travel distance related to the normal repetitive operation is obtained. Thus, by using the threshold value for the repetitive operation time, the normal repetitive operation and the special repetitive operation are discriminated and only the repetitive operation time related to the normal repetitive operation is selected. For each of the above, the repetitive movement distance or speed is accurately calculated.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of an electronic measuring device according to the present invention.

FIG. 2 is a flowchart showing a flow of detecting a time when a repeated operation is performed.

FIG. 3 is a graph showing an acceleration waveform when swimming by crawling.

FIG. 4 is a graph showing an acceleration waveform when swimming in a breast.

FIG. 5 is a graph showing a part of the result of detecting repetitive motions when a competition of 400 m individual medley was performed in a 50 m pool.

FIG. 6 is a table showing the relationship between the time required for a dive or turn and the distance traveled by the dive or turn.

FIG. 7 is a graph showing a result of calculating a repetitive movement distance when the breast travels 50 m back and forth in a 400 m individual medley competition.

[Explanation of symbols]

1 ... Electronic measuring instrument, 11 ... Repeated motion detection sensor, 1
2 ... Repeated operation time calculation unit, 13 ... Data calculation unit, 1
4 ... Display section.

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Claims (3)

[Claims] 1. A repetitive motion detection sensor that detects each time when a repetitive motion is performed in repetitive motion and outputs a detection signal that notifies the detection of the repetitive motion, and the repetitive motion detection sensor that outputs the repetitive motion detection sensor. An electronic measuring instrument, comprising: a repetitive operation time calculating means for calculating the repetitive operation time, based on a detection signal, for each of the repetitive operations, with a time required for one repetitive operation as a repetitive operation time. 2. A data calculation means for calculating, for each of the repetitive movements, one of a distance and a speed which the repetitive movement advances once based on the data of the repetitive movement time calculated by the repetitive movement time calculating means. The electronic measuring instrument according to claim 1, further comprising: a display unit that displays one of the distance and the speed calculated by the data calculation unit, the distance traveled in one repetitive operation. 3. The data calculating means removes data of repetitive operation time exceeding a predetermined threshold value based on the data of the repetitive operation time calculated by the repetitive operation time calculating means and sets the predetermined threshold value to the predetermined threshold value. Subtracting the distance traveled in the exceeding repetitive operation time from the total moving distance, for each of the repetitive operations,
The electronic measuring device according to claim 2, wherein either one of the distance traveled and the speed is calculated in one repetition operation.