JP3021869B2 - Counting device and underwater glasses using the counting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention utilizes an orientation sensor,
The present invention relates to a counting device for counting the number of revolutions such as orbiting motion and reciprocating motion, or the number of reciprocating motions. And an underwater spectacle provided with the counting device and capable of automatically counting the number of reciprocations.

[0002]

2. Description of the Related Art In recent years, the number of people who repeatedly exercise regularly to maintain their health has increased. However, reciprocating exercises and orbital exercises performed at such times, for example, reciprocating exercises such as swimming in a pool, etc., have been repeated. In many cases, such as when running on an elliptical track many times, it is cumbersome to remember the number of round trips, and often the number of round trips or rounds is not accurately stored. . In the case of training as a sport, it is preferable to release the player from the hassle of remembering the number of round trips or the number of laps, so that the player can concentrate on the practice. The number of round trips must be counted using a container or the like.

[0003]

Whether exercise is performed for maintaining health or for voluntary training, exercise that is carried out regularly has a constant amount of exercise every time. It is said that it is effective to increase the amount of exercise each time by increasing the fixed amount, but in such a case,
If you do not remember exactly how many round trips or laps you have made,
The goal is not settled, and the effect cannot be expected even if you exercise regularly.

An object of the present invention is to provide a device which automatically counts the number of reciprocations or the number of rounds and informs the display.

[0005]

The means of the present invention are as follows. In the counting device according to the first aspect, first, the azimuth detecting means detects the azimuth of the geomagnetism. The means comprises, for example, a magnetic sensor or the like. Next, the rotation detecting means detects that the direction of the motion has made one rotation based on the change in the azimuth detected by the azimuth detecting means. The means includes, for example, a register for storing an azimuth signal, an oscillation circuit for generating a clock signal, and a C for performing an operation based on a program stored in a ROM (Read Only Memory).
It consists of a PU (Central Processing Unit) and the like. Further, the counting means counts the number of times the direction of the motion detected by the rotation detecting means has made one rotation. The means is, for example, RAM (Rando
m Access Memory).

In the counting device according to the present invention, the rotation detecting means detects that the direction of the motion has made one rotation since the azimuth has been reversed. For example, in the CPU, an operation for detecting inversion is performed.

According to a third aspect of the present invention, there is provided the underwater glasses having the counting device according to the first or second aspect, and the display means calculates and displays the number of reciprocations of the movement counted by the counting device. The means include, for example, a CPU (Central Processing Unit),
It consists of a liquid crystal display device and the like.

[0008]

The operation of the means of the present invention is as follows. First,
In the counting device according to the first aspect, the azimuth of the geomagnetism is detected by the azimuth detecting means, the rotation detecting means detects that the movement direction has made one rotation based on the change of the detected azimuth, and the counting means detects the azimuth. The number of rotations in the given movement direction is counted.

As a result, the number of revolutions of the reciprocating motion or the number of reciprocating motions of the reciprocating motion are automatically counted. Next, in the counting device according to claim 2, the rotation detecting means detects that the movement direction has made one rotation based on the reversal of the detected azimuth. Are counted.

Next, in the underwater glasses according to the third aspect, in addition to the operation of each means of the inversion detecting device according to the first or second aspect, the number of reciprocations of the counted movement is calculated by the display means. Is displayed.

Thus, the number of reciprocations of the exercise is automatically displayed, and the user can see the number of reciprocations.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1A is an external top view of the underwater glasses according to the first embodiment of the present invention, and FIG. 1B is a front view thereof.

1 (a) and 1 (b), an underwater spectacle 1 comprises a spectacle frame 3 on which a spectacle transparent plate 2 is mounted in front and a band 4 for mounting the spectacle frame 3 on a head. A counter 5 having a push button type switch 6 and a display device 7 connected to the counter 5 and having a display surface on the inner surface of the left frame of the spectacle frame 3 are provided at the front center of the spectacle frame 3. .

When the underwater glasses 1 are worn, the display device 7
FIG. 6 shows a display of the number of reciprocation times data described later, for example, “2” viewed from the inside. FIG. 2 is a block diagram showing the internal circuit configuration of the counter 5.

In FIG. 1, a control unit 20 is composed of a microprocessor or the like.
It operates according to a microprogram stored in an ead Only Memory (Ead Only Memory) and controls the entire system.

The sensor drive circuit 21 includes a reference voltage generation circuit, a constant current circuit, and the like, and applies an AC bias voltage and a constant current to a direction sensor 22 described later based on a control signal applied from the control unit 20.

The azimuth sensor 22 is composed of two magnetic sensors 22-1 and 22-2 arranged at right angles to each other. These two magnetic sensors 22-1, 22-2
Consists of, for example, a magneto-resistive element and a bias magnetic field coil.When an AC bias voltage is applied to the bias magnetic field coil, it corresponds to the geomagnetic component sensed separately for the constant current applied to the magneto-resistive element. The detected voltage resistance value is output to the detection circuit 23 or 24.

The detection circuits 23 and 24 each comprise a peak hold circuit, which detects the voltage resistance value output from the direction sensor 22 and detects the electrodes 25-1 and 25- respectively.
Output to 2.

The A / D converter 26 is a circuit for converting an analog electric signal into a digital electric signal, and outputs two kinds of analog voltage outputs applied to the electrodes 25-1 and 25-2 from the two detection circuits 23 and 24. , Switch 26-1 and electrode 26-2 based on a control signal applied from control unit 20.
And converts it into a digital signal while alternately switching it at an appropriate timing, and outputs the digital signal to the control unit 20.

As shown in FIG. 6, the display unit 27 includes a liquid crystal display device 7 comprising, for example, a two-digit seven-segment display unit. The display unit 27 decodes a display signal applied from the control unit 20 and converts the display data into liquid crystal. It is displayed on the display device 7.

The input unit 28 includes the push button type switch 6 shown in FIG. 1 and outputs an operation signal of the push button type switch 6 to the control unit 20. The control unit 20 is turned on by the first key input signal of the push button type switch 6 applied from the input unit 28 and starts control of the system.
1 and output a control signal to the A / D converter 26 to start up. An arithmetic operation is performed based on two kinds of digital signals indicating the strength of the voltage resistance alternately input from the A / D converter 26 and the direction in which the two magnetic sensors are arranged, and the geomagnetic north pole Is calculated, and the angle between the detected direction indicating the geomagnetic north pole and the mounting direction of the push button type switch 6 of the counter 5 is calculated, and the direction of the mounting direction of the push button type switch 6 is detected. The number of reciprocations is counted by counting the number of reversals, which will be described later, in detail, and the number of reciprocations is displayed, for example, as shown in FIG. It is displayed on the liquid crystal display device 7 of the section 27.
The control unit 20 repeats the above-described control at a constant period until a next key input signal of the push button type switch 6 is applied from the input unit 28.

Here, the direction sensor 22 will be described. FIG. 5A shows the direction sensor 22, FIG. 5B shows the direction of the geomagnetic north pole, and FIG. 5C shows the position of the direction sensor 22 shown in FIG. 22 to arrow C
When rotated in the direction of D or E, two magnetic sensors A
It is a characteristic diagram of the voltage resistance value respectively output by (22-1) and B (22-2). The solid line is the output of the magnetic sensor A,
The broken line is the output of the magnetic sensor B. Each output is
The direction sensor 22 moves in the direction of arrow C in the direction of north, east, south, west,
If it rotates north again, the output will have the characteristics shown from "0" to "H" on the horizontal axis corresponding to the rotational position.
When the azimuth sensor 22 rotates in the direction indicated by the arrow E in the direction of the arrow C, an output having characteristics indicated from “H” to “0” on the horizontal axis is obtained. Therefore, the difference between the output of the magnetic sensor A and the output of the magnetic sensor B is calculated, and the direction of the direction sensor 22 can be known from the value obtained by the calculation. That is, for example, if k is a coefficient obtained from the value of the constant current and the resistance characteristic of the magnetoresistive element, and α is the clockwise rotation angle of the azimuth sensor 22 from the north, the clock shown in FIG. The output value of the magnetic sensor A is k × sin α, and the output value of the magnetic sensor B is k × c
osα, and the value of the difference is k
(Sin α-cos α) or k (cos α-sin
α). Therefore, the direction sensor 22
From the calculation result of calculating the difference between the outputs of the two magnetic sensors A and B, the azimuth indicated by the azimuth sensor 22 can be detected using the characteristic values as transfer functions.

The azimuth sensor 22 is disposed inside the counter 5 so that the azimuth sensor 22 is horizontal when the person wears the underwater glasses 1 and is in a supine or down state. Therefore, if the person wearing the underwater glasses 1 is in the supine or down state on the water surface or in the water, the heading direction of the person can be detected, and the person turns over during swimming and turns his head. Is reversed, the direction is also reversed, and the reversed direction is detected.

Next, in the underwater glasses 1 having the above configuration,
The processing operation of counting the number of reciprocations performed under the control of the control unit 20 for displaying on the liquid crystal display device 7 of the display unit 27 during swimming will be described with reference to the flowchart of FIG.
In this process, the control unit 20 generates a clock signal of 1 Hz based on a clock signal output from a built-in oscillation circuit (not shown), and performs processing in synchronization with the clock signal. Also, this is not particularly shown in the RAM (Rando
m Access Memory) Flag data area A set in
F, BF, CF, DF, azimuth data areas A, B, C,
D, E, F, and G are used.

FIG. 4 is a diagram for explaining the relationship between the data stored in each flag data area and the data stored in each direction data area. First, the functions of each data area will be listed with reference to FIG.

The azimuth data area A stores the current azimuth data every second. For example, at times T0, T1, T in FIG.
At 2 (seconds), the azimuth data is “45” (the head direction is 45 degrees clockwise with respect to the azimuth of the geomagnetic north pole, and so on), T
3 is “135”, and from T4 to Ti is “22” respectively.
5 "," 110 "for Ti + 1, and Ti + 2, Ti
In the case of +3,...

In the flag data area AF, the value is "0" →
"1" → "2" → "3" → "0" is switched every second and takes a value that goes around every four seconds. Orientation data area B
Stores the azimuth data when the value of the flag data area AF is "0", that is, the azimuth data for the first one second of the cycle in 4 seconds, and stores the stored azimuth data and the value of the flag data area AF next. Is maintained for 4 seconds until becomes zero.

The azimuth data area C stores the azimuth data when the value of the flag data area AF is "1", that is, the azimuth data for the second one second circulating in four seconds. Next, it is maintained for 4 seconds until the value of the flag data area AF becomes "1".

The azimuth data area D stores the azimuth data when the value of the flag data area AF is "2", that is, the azimuth data for the third one second circulating in four seconds. Next, it is maintained for 4 seconds until the value of the flag data area AF becomes “2”.

The azimuth data area E stores the azimuth data when the value of the flag data area AF is "3", that is, the azimuth data for the fourth one second circulating in four seconds. Next, it is maintained for 4 seconds until the value of the flag data area AF becomes “3”.

The azimuth data area F stores the difference between the current azimuth data and the azimuth data three seconds ago. The azimuth data area G stores, when the current azimuth data is inverted with respect to the azimuth data three seconds before, the inverted current azimuth data.

The flag data area BF stores "1" when the azimuth is inverted, and sequentially increases the value by "1" when the azimuth data of the azimuth data area A and the azimuth data of the azimuth data area G match. When it becomes "3", it is cleared to "0" at the next processing timing.

When the value of the flag data area BF becomes "3", the flag data area CF switches to "1" if its value is "0" and to "0" if it is "1". . The flag data area DF becomes "1" each time the value of the flag data area CF switches from "1" to "0".
To increase.

Then, the value of the flag data area DF is displayed on the liquid crystal display device 7 of the display unit 27 as the number of times of reciprocating swimming. Next, a processing operation for realizing the above function will be described with reference to a flowchart of FIG.

In the figure, in step S301, first, the flag data areas AF, BF and CF are set to "0".
It is cleared and initialized, and "1" is substituted into DF (because the display value starts from "1"). Next, current azimuth data is calculated from two types of resistance voltage data input from the azimuth sensor 22 via the detection circuits 23 and 24 and the converter 26, and the calculated current azimuth data is stored in the azimuth data area C. , D and E for initialization.

Then, the flow advances to step S302 to store the current azimuth data calculated in the same manner as above in the azimuth data area A. Thereby, the function of storing the current azimuth data every second in the azimuth data area A shown in FIG. 4 is realized.

Next, the routine proceeds to step S303, where the value of the flag data area AF is referred to, and if the value is "0", the routine proceeds to step S304. As a result, immediately after the processing is started, or in the first processing of the next cyclic processing in which the processing from the first to the fourth in four seconds is completed,
Processing after step S304 is performed.

In step S304, the value of the direction data area A is transferred to the direction data area B. This implements a function of storing the azimuth data of the first one second in the azimuth data area B shown in FIG. 4 for the next four seconds.

Subsequently, the process proceeds to step S305, in which the value of the azimuth data area C is subtracted from the value of the azimuth data area A, and the result of the subtraction is stored in the azimuth data area F. Thus, a function of storing the value of the difference between the current azimuth data and the azimuth data three seconds before in the azimuth data area F shown in FIG. 4 is realized.

Following the above, the process proceeds to step S306,
The value of the flag data area AF is incremented by "1". Thereby, it is set that the processing at the next processing timing is the second processing of the cyclic processing.

At the next processing timing, it is confirmed in step S303 that the flag data area AF is "1", and the flow advances to step S307 to transfer the value of the azimuth data area A to the azimuth data area C. I do.
Thereby, the function of storing the azimuth data for the second one second in the azimuth data area C shown in FIG. 4 for the next four seconds is realized.

Subsequently, the process proceeds to step S308, where the value of the azimuth data area D is subtracted from the value of the azimuth data area A, and the result of the subtraction is stored in the azimuth data area F. Thus, a function of storing the value of the difference between the current azimuth data and the azimuth data three seconds before in the azimuth data area F shown in FIG. 4 is realized.

Following the above, the process proceeds to step S309,
The value of the flag data area AF is incremented by "1". Thereby, it is set that the processing at the next processing timing is the third processing of the cyclic processing.

At the next processing timing,
In step S303, it is confirmed that the flag data area AF is "2", and the process proceeds to step S310. In step S310, the value of the azimuth data area A is transferred to the azimuth data area D. Thus, a function of storing the azimuth data for the third one second in the azimuth data area D shown in FIG. 4 for the next four seconds is realized.

Subsequently, the flow advances to step S311 to subtract the value of the azimuth data area E from the value of the azimuth data area A and store the result of the subtraction in the azimuth data area F. Thus, a function of storing the value of the difference between the current azimuth data and the azimuth data three seconds before in the azimuth data area F shown in FIG. 4 is realized.

Following the above, the process proceeds to step S312,
The value of the flag data area AF is incremented by "1". Thereby, it is set that the processing at the next processing timing is the fourth processing of the cyclic processing.

Further, at the next processing timing, it is confirmed at step S303 that the flag data area AF is "3", and then at step S3
Proceeding to 13, the value of the azimuth data area A is transferred to the azimuth data area E. Thereby, the function of storing the azimuth data for the fourth one second in the azimuth data area E shown in FIG. 4 for the next four seconds is realized.

Next, in step S314, the value of the direction data area B is subtracted from the value of the direction data area A, and the result of the subtraction is stored in the direction data area F. Thereby, the azimuth data area F shown in FIG.
The function of storing the value of the difference between the current azimuth data and the azimuth data three seconds before is continuously realized.

Subsequently, the flow advances to step S315 to clear the value of the flag data area AF to "0". As a result, the processing returns to the beginning of the cyclic processing from the next processing timing and is set as the processing from the first processing.

Thus, the azimuth data areas B, C, D
And E, the direction data measured at the first, second, third, and fourth seconds, respectively, are stored, and the stored direction data is respectively stored until the next storage timing of each. Hold for 4 seconds. At each processing timing, the current azimuth data stored in the azimuth data area A and the azimuth measured at the processing timing three seconds before stored and held in the azimuth data areas B, C, D, or E The difference from the data is calculated and stored in the azimuth data area F.

Next, a description will be given of processing operations that follow each processing of the cyclic processing that makes one cycle in four seconds. In step S316 of the figure, it is determined with reference to the value of the flag data area BF whether or not inversion described below has been detected. If the flag data area BF is "0", it is determined that inversion has not been detected yet, and the flow advances to step S317. The difference between the current azimuth data stored in the azimuth data area F and the azimuth data three seconds ago is 170 degrees and 190 degrees.
Degrees, that is, whether or not it is approximately 180 degrees. Thus, it is determined whether or not the current direction is reversed with respect to the direction three seconds ago.

In step S317, if it is not inverted, the process returns to step S302, and the processing in steps S302 to S302 is repeated.
Step S317 is repeated. Then, step S31
If it is determined in step 7 that the data is inverted, the flow advances to step S318 to set "1" in the flag data area BF. Thus, if the azimuth is reversed, the first second after the reversal is counted.

Next, the flow advances to step S319 to transfer the current direction data of the direction data area A to the direction data area G. Thus, the azimuth data immediately after the inversion is stored in the azimuth data area G.

At the next processing timing, it is determined in step S316 that the value of the flag data area BF is "1". In this case, the process proceeds to step S320, where the azimuth data of the azimuth data area G is It is determined whether or not the orientation data in the orientation data area A matches. Thus, the azimuth data immediately after the reversal is compared with the azimuth data one second later.

If they match, step S3
Proceeding to 21, the value of the flag data area BF is still "3"
After confirming that it is not the same, proceed to step S322,
The flag data area BF is incremented by "1", and the process returns to step S302. Thereby, the second second after the direction reversal is counted.

At the next processing timing, the value of the flag data area BF is set to "2" in step S316.
Is determined, and also in this case, step S320
The azimuth data immediately after the reversal is compared with the azimuth data two seconds later to confirm the coincidence. In step S321, it is confirmed that the value of the flag data area BF is not yet "3". In S322, the flag data area BF
Is incremented by "1" and the process returns to step S302.
As a result, the third second after the azimuth inversion is counted, and immediately after the azimuth inversion, a period in which the inverted azimuth is the same as the current azimuth is measured for three seconds.

Then, at the next processing timing, it is determined in step S321 that the flag data area BF is "3", and step S323 is performed.
Proceed to. Thus, if the period in which the current orientation is the same as the inverted orientation continues for 3 seconds, it is determined that the inversion has been performed, and the processing in step S323 and subsequent steps is started.

If the azimuth data in the azimuth data area G does not match the azimuth data in the azimuth data area A in step S320, the flow advances to step S327.
The flag data area BF is cleared to "0". Accordingly, if the current direction is different from the reverse direction within 3 seconds immediately after the detection of the reverse, the detection of the reverse is determined, for example, only by shaking the head, that is, it is determined that it is not the actual reverse, and the detection of the reverse is performed during the reverse period. The count is canceled. As a result, at the next processing timing, the process proceeds from step S316 to step S317, and the azimuth reversal is detected again.

After confirming that the inversion has been performed, it is determined in step S323 whether or not the value of the flag data area CF is "0".
At 324, "1" is set. Thus, the function of the flag data area CF indicating that the first (or odd-numbered) inversion has been performed is realized.

Subsequently, the flow advances to step S327. Thus, when it is confirmed that the first (or odd-numbered) inversion has been performed, the next direction inversion is detected. In the above step S323, the flag data area CF is "1".
If so, the flow advances to step S325 to increment the flag data area DF by "1". Thus, after the first (or odd-numbered) inversion is performed, if the next inversion is confirmed, it is determined that one reciprocation has been made, and “1” indicating one reciprocation is added to the flag data area DF. You.

Subsequently, the flow advances to step S326 to clear the flag data area CF to "0", and then to step S30.
Return to 2. As a result, the function of the flag data area CF indicating that the even-numbered inversion has been performed is realized, and the processing for detecting the next round trip is repeated again.

In this way, the number of reciprocating movements during swimming is counted, the counted number of reciprocating times is stored in the flag data area DF, and the stored reciprocating number data is displayed on the liquid crystal display device 7 of the display unit 27. For example, "2" is displayed as shown in FIG.

Next, a second embodiment of the present invention will be described. In the second embodiment, the present invention is applied as a counting device for the number of laps in the motion of lapping a track many times as shown in FIG.

The present counting device has a counting device having a configuration as shown in FIG. 2 enclosed in a housing mountable on a human body. The function of each unit is the same as in the first embodiment. The display unit is exposed, and the wearer can view the display. Also, similarly to the first embodiment, having a push button type switch,
Its function is also the same as that of the first embodiment.

The process of counting the number of turns performed by the control unit in order to display on the liquid crystal display device of the display unit during the orbital movement in the counting device having the above configuration will be described with reference to the flowchart of FIG. I do. As in the first embodiment, the control unit generates a 1 Hz clock signal based on a clock signal output from a built-in oscillation circuit (not shown), and performs processing in synchronization with the clock signal. The flag data areas BF, CF, DF and the azimuth data areas A, H, and F set in the RAM (not shown) are also used.

FIG. 8 is a view for explaining the relationship between the data stored in each flag data area and the data stored in each direction data area. First, the functions of each data area will be listed with reference to FIG.

The direction data area A stores the current direction data every second. For example, at times T11 and T12 in FIG.
(Seconds), the direction data is “45”, and T21 is “25”.
0 "and" 70 "at T31. Note that T11 is immediately after the start, that is, near P in FIG. 9, T23 is at the time of direction reversal, that is, near Q in FIG. 9, and T33 is at the time of the second reversal, that is, near R in FIG.

The azimuth data area H stores the value of A immediately after the inversion, that is, the value that is used as a reference when determining the next inversion. The azimuth data area F contains the current azimuth data A
And the absolute value of the difference between the azimuth data H and the latest azimuth data H immediately after the inversion.

The flag data area BF stores “1” when the azimuth is reversed, and the value of the azimuth data area F is 170.
The time value of 190 or less is sequentially increased by "1", and when it becomes "3", "0" is cleared at the next timing.

When the value of the flag data area BF becomes "3", the value of the flag data area CF becomes "0".
If it is, it is switched to "1", and if it is "1", it is switched to "0". The flag data area DF has a flag data area C
Each time the value of F switches from “1” to “0”, the value increases by “1”.

Then, the value of the flag data area DF is displayed on the liquid crystal display device of the display unit as the number of times of the orbital movement. Next, a processing operation for realizing the above function will be described with reference to FIG.
This will be described with reference to the flowchart of FIG.

In the figure, in step S701, the flag data areas BF, CF and DF are cleared to "0" and initialized. Subsequently, in step S702, the current azimuth data is obtained by the same operation as in the first embodiment.
It is stored in the azimuth data area H.

Next, the flow advances to step S703, where the current azimuth data calculated in the same manner as above is stored in the azimuth data area A.
To be stored. As a result, a function of storing the current azimuth data every second in the azimuth data area A shown in FIG. 8 is realized.

Next, the flow advances to step S704 to store the absolute value of the difference between the value of the azimuth data area A and the value of H in the azimuth data area F. This implements a function of storing the absolute value of the difference between the current azimuth data and the latest azimuth data immediately after the inversion in the azimuth data area F shown in FIG.

Next, in step S705, it is determined with reference to the value of the flag data area BF whether or not inversion described later has been detected. If the flag data area BF is "0", it is determined that the inversion has not been detected yet, and step S
Proceed to 706.

In step S706, it is determined whether or not the difference between the current azimuth data stored in the azimuth data area F and the latest azimuth data immediately after the reversal is 170 degrees or more and 190 or less, that is, approximately 180 degrees. I do. Thereby, it is determined whether or not the current orientation is further inverted with respect to the latest orientation immediately after the inversion.

In step S706, if it is not inverted, the process returns to step S703, and steps S703 to S703 are executed.
Step S706 is repeated. Then, step S70
If it is determined in step S6 that the image is inverted, the process proceeds to step S707, and "1" is set in the flag data area BF. Thus, if the azimuth is reversed, the first second after the reversal is counted.

At the next processing timing, it is determined in step S705 that the value of the flag data area BF is "1", and in this case, the flow proceeds to step S708.

In step S708, the difference F between the current azimuth data and the azimuth data immediately after the previous inversion is 170 degrees or more and 1
It is determined whether the angle is 90 degrees or less. Thereby, it is determined whether or not the inversion state is continued.

If the inversion state is continued, the flow advances to step S709 to confirm that the value of the flag data area BF has not yet become "3", and then to step S71.
Go to 0.

In step S710, the flag data area BF is incremented by "1", and the flow returns to step S703. Thereby, the second second after the direction reversal is counted. Even at the next processing timing, the above-described step S7
At 05, it is determined that the value of the flag data area BF is “2”, and in this case also, the process proceeds to step S708,
Difference F between current bearing data and bearing data immediately after previous inversion
Is greater than or equal to 170 degrees and less than or equal to 190 degrees, it is confirmed that the value of the flag data area BF is not yet "3" in step S709, and the flag data area BF is incremented by "1" in step S710. hand,
It returns to step S703. As a result, 3
Seconds are counted, and immediately after the direction reversal, a period in which the reversed direction is the same as the current direction is measured for 3 seconds.

Then, at the next processing timing, it is determined in step S709 that the flag data area BF is "3", and step S711 is performed.
Proceed to. As a result, if a period in which the current orientation is the same as the inverted orientation continues for 3 seconds, it is determined that the inversion has been performed, and the processing from step S711 is performed.

In step S708, the difference F between the current azimuth data A and the azimuth data H immediately after the previous inversion is 1
If not more than 70 degrees and not more than 190 degrees, step S716
To clear the flag data area BF to "0". Thus, when the current direction is different from the reverse direction within 3 seconds immediately after the detection of the reverse, it is determined that the current direction is not the actual reverse, and the count of the reverse period is canceled.

As a result, at the next processing timing, the process proceeds from step S705 to step S706, and the azimuth reversal is detected again. After confirming that the inversion has been performed, in step S711, the current azimuth data A is stored in H as the latest azimuth data immediately after the inversion. As a result, H is updated every time inversion is detected, and the latest azimuth data immediately after inversion, which is a reference for inversion detection, can be always obtained.

Next, in step S712, it is determined whether or not the value of the flag data area CF is "0".
If "0", "1" is set in step S713.
Thus, the function of the flag data area CF indicating that the first (or odd-numbered) inversion has been performed is realized.

Subsequently, the flow advances to step S716. Thus, when it is confirmed that the first (or odd-numbered) inversion has been performed, the next direction inversion is detected. In the above step S712, the flag data area CF is "1".
If so, the flow advances to step S714 to increment the flag data area DF by "1". Thus, when the second (or even-numbered) inversion execution is confirmed, it is determined that one round has been made, and “1” indicating one round is added to the flag data area DF.

Subsequently, the flow advances to step S715 to clear the flag data area CF with "0".
Return to 03. As a result, the function of the flag data area CF indicating that the even-numbered inversion has been performed is realized, and the processing for detecting the next one round is repeated again.

In this way, the reciprocating motion during swimming is counted, the counted number of revolutions data is stored in the flag data area DF, and the stored number of revolutions data is displayed on the liquid crystal device of the display unit. .

In the above embodiment, the image is displayed on the left side of the underwater glasses, but may be displayed on the right side. In addition, although an example in which the present invention is applied to underwater spectacles has been described, a counting-only device that can be attached to, for example, the waist may be used.

[0090]

According to the present invention, reversal of motion is detected by using a direction sensor for detecting direction from geomagnetism, and the detected reversal is counted to calculate the number of reciprocations of the motion. Automatically shows the number of round trips,
This eliminates the hassle of remembering the number of reciprocating exercises, so that you can concentrate on exercises and training.

[Brief description of the drawings]

FIG. 1A is a top view of the appearance of underwater glasses according to a first embodiment of the present invention, and FIG. 1B is a front view thereof.

FIG. 2 is a block diagram showing an internal circuit configuration of a counter of the underwater glasses.

FIG. 3 is a flowchart illustrating a processing operation for counting the number of reciprocations during swimming.

FIG. 4 is a diagram illustrating a relationship between data stored in each flag data area and data stored in each azimuth data area in the first embodiment.

FIGS. 5A, 5B, and 5C are diagrams for explaining the function of the direction sensor.

FIG. 6 is a diagram showing a state where the display of the number of reciprocation times data displayed on the display device of the underwater glasses is viewed from the inside.

FIG. 7 is a flowchart of the second embodiment.

FIG. 8 is a diagram illustrating a relationship between data stored in each flag data area and data stored in each azimuth data area in the second embodiment.

FIG. 9 is a diagram illustrating the counting principle of the second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Underwater glasses 2 Glass 3 Glasses frame 4 Band 5 Counter 6 Push button type switch 7 Liquid crystal display device 20 Control part 21 Sensor drive circuit 22 Direction sensor 23, 24 Detection circuit 25-1, 25-2, 26-2 Electrode 26A / D converter 26-1 selector switch 27 display unit 28 input unit

Claims (3)

(57) [Claims] 1. An azimuth detecting means for detecting an azimuth of geomagnetism, a rotation detecting means for detecting that the azimuth detected by the azimuth detecting means makes one rotation, and counting the number of times the rotation detecting means makes one rotation. A counting device, comprising: counting means; 2. The counting device according to claim 1, wherein the rotation detecting means detects that the azimuth has made one rotation based on the inversion of the azimuth detected by the azimuth detecting means. 3. The counting device according to claim 1, further comprising: a display device that displays a number of times of one rotation of the azimuth counted by the counting device; Underwater glasses provided so as to be visible.