JPS62233175A - Running data detector - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Object of the Invention] (Field of Industrial Application) The present invention provides a running data detection device for detecting running data such as running speed, running distance, and IJ expenditure calories of a runner during running, jogging, etc. Regarding.

(Prior art) Conventionally, as this type of device, for example, Japanese Patent Application Laid-Open No. 59-171
No. 564 is disclosed.

This conventional example focuses on the proportional relationship between the length of time that a runner's feet are in contact with the running surface and the runner's running speed, and the time that the runner's feet are in contact with the running surface is a foot contact detection device that outputs an output, a transmitting device that wirelessly transmits a foot contact signal based on the contact time, a receiving device that receives the foot contact signal, and a processing circuit that calculates the running speed of the runner from the foot contact signal; The runner is equipped with a display device that displays the running speed, and is configured so that a runner carrying this device can arbitrarily know running data such as the instantaneous speed while running and the distance traveled based on this speed. .

(Problems to be Solved by the Invention) However, this conventional device must be set in a calibration mode before being used for the first time.

In other words, this device is based on the proportional relationship between the time a runner's foot is in contact with the running surface and the running speed, and there are individual differences in the relationship between this contact time and running speed. Generally, there is a relationship between 1i1x at the time of contact and the traveling speed y as expressed by the following -dimensional equation: V - AX + 8 (A and 8 are constants that vary depending on the individual). Therefore, in order to find the constants A and B of this -dimensional equation, the user must travel a certain distance twice at clearly different speeds. Then, from these two runs, calculate the average contact time and average speed, calculate the constants A and B, and set the constants △ and B to the device before using this device for the first time. can.

However, in order to set this calibration mode, it is extremely troublesome for the user to travel at different speeds twice in advance. In other words, if the vehicle is not traveling at a constant speed, the constant is A.

If an error occurs in the value of B, and there is no obvious difference in the two running speeds, it is difficult to obtain accurate constants A and B because the difference between the two different points at which the above-mentioned -order culm equation is analyzed is small. Can not.

Therefore, there is a problem in that an accurate running speed cannot be obtained depending on how the calibration mode is set.

The present invention has been made based on the above-mentioned problems, and an object of the present invention is to provide a traveling data detection device that does not require complicated calibration and can always obtain accurate traveling data such as traveling speed. It is something.

[Structure of the Invention] (Means for Solving the Problems) The present invention provides two or more devices that are arranged at a distance from each other near the heel and near the ball of the foot of a runner's foot, and output a ground contact signal with the road surface. a ground sensor, an arithmetic circuit that calculates running data such as the running speed of the runner based on ground contact time and non-ground contact time determined from contact signals of these ground sensors, and a display that displays this running data. It is something to be prepared for.

(Function) By simply inputting the pre-measured distance between the runner's hip height and the two ground contact sensors, the running data such as running speed will be automatically calculated based on the relationship between the ground contact time and non-ground contact time during running. will be displayed.

(Example) Hereinafter, one embodiment of the present invention will be described in detail based on the drawings.

The insole of the shoe 2 worn by the runner 1 is equipped with a first ground sensor 3 and a second ground sensor at two points on the heel and the big toe of the runner's foot, respectively.
A ground sensor 4 is disposed and is configured to generate a ground signal that turns on and off depending on the pressure of the runner's feet coming into contact with the road surface. In addition, at an appropriate position of the shoe 2,
These first. A transmitter 5 that wirelessly transmits a grounding signal from the second grounding sensor 3.4 and a small battery 6 that supplies driving power to the second grounding sensor 3. It is connected to the second ground sensors 3 and 4 and arranged.

A portable detector main body 7 is attached to the arm of the runner 1 in the form of a wristwatch, for example. This detector body 7 includes a receiver 8 that receives the grounding signal transmitted by the transmitter 5, a CPU (microprocessor) 9 that calculates data such as the running speed of the runner 1 based on the grounding signal, and a CPU (microprocessor) 9 that calculates data such as the running speed of the runner 1 based on the grounding signal. A display device 11 such as a liquid crystal display element that displays data via a display drive circuit 10, a clock circuit 12, a keyboard that can input the waist height H of the runner 1 and the distance S between the first sensor 3 and the second sensor 4; Operation switch 13 having reset 1 to switch etc., and these operation switches 13
The interface 14 outputs the signal to the CPL 19.

Next, the operating principle of the present invention will be explained.

Generally, the running speed of a runner while running is determined by pitch and stride. Since pitch is the number of steps taken within a certain fixed time, it is also expressed as the time required to take one step (hereinafter referred to as stride rate), so stride rate and stride If you know this, you can find the traveling speed. Generally, the stride rate is determined by the contact time of a ground sensor installed on the sole of the foot, but it has been said that it is difficult to determine the stride rate because it is a positional relationship at a spatially different time. A second ground sensor 3.4 is provided, and when the foot touches the ground, f! Stride is also determined from II (hereinafter referred to as on time) and non-ground contact time (time during which both feet are in the air, hereinafter referred to as off time), and running speed is determined from these.

In other words, as shown in Fig. 4, when runner 1 looks at heel P (one foot is in contact with the ground), the angle formed by the body (hip) and the perpendicular to the ground is B1, and then the body becomes perpendicular to the ground. A is the distance traveled until the toe Q and the body become perpendicular to the ground. B1 is the angle of the body when the toe Q leaves the ground. B2 is the distance the body moves. Letting D be the distance traveled by the person's feet until they touch the ground, the distance traveled by the body during the on-time is determined by A+B+C, and the distance traveled by the body during the off-time is determined by D.

Also, while driving, if you see 14J cycles as shown in Figure 4, you will try to maintain the running speed from before.
A, B, C.

It is thought that the traveling speeds in section D are almost the same.

Distance 1! IB is the size of the foot, distance is C is the height to the waist (H), and if angles θ1 and B2 are solved, Hta
Determined by nθ1 and Htanθ2, waist height (leg length) H
is a value that can be measured before driving, but the angle θ1. θ2 is difficult to obtain. However, the angle θ1 is as shown in FIG.
This is the angle of incidence at which the foot touches the ground. If B1 becomes too large, it acts as a brake on running, resulting in extremely poor efficiency and unreasonable running that looks jerky. Since there is no such thing, the angles that can be taken are determined to a certain extent.

Furthermore, since the angle θ2 includes the kick-off period, it has a considerable degree of freedom depending on the degree of freedom of the ball of the foot, the structure of the shoe, the inclination of the body, etc.

Therefore, in the present invention, no ground sensor is provided on the toe Q,
As shown in Figures 3 and 6, there is a second
A ground sensor 4 is provided. Then, the influence of the degree of freedom of the big toe 1111 node, the structure of the shoe, the inclination of the body, etc. is eliminated, and since this angle θ2' cannot be 0°, the possible angles are determined to a certain extent.

Therefore, since the position of the ground sensor has been defined, FIG. 4 changes as shown in FIG. 7. Then, when runner 1 runs in long strides, the angle θ1. It is clear that θ2' is large and becomes smaller if the vehicle runs in short steps. Now, with reference to FIG. 8, consider the case where two runners with the same leg length and foot size run with the same stride and stride ray 1- (same running speed).

Since the slides are the same, the moving distance is A+S-+C
-+O- is equal for both, and since B- is equal because they have the same foot size, A+C"+D- is also equal. Also, since both have the same foot length, the slide is the same. , the angles θ1 and θ2' are almost the same in both. This is because the angles θ1 and 02' are made thicker (and the stride becomes larger, and the angles θ1 and θ2- are made larger to try to make the stride the same). In this case, the running becomes unreasonable and the stride rate changes. Therefore, the distances A+B-+C'' are equal for both, and the distance 111D- is also equal, so the on time and off time of both become equal.

Looking at the on-time and off-time and the distance traveled by the body during running, the distance the body moves during the on-time is fixed to some extent depending on the angle of the joints of the legs, TI, etc., but compared to that, the distance traveled during the off-time is fixed. There is considerable freedom in the distance the body moves. Therefore, the length of the foot and the size of the foot are equal 2
Figure 9 shows the relationship when people run at the same speed but one strides faster than the other. Here, E is the distance traveled by short-stride runner 1 during the on-time, F is the distance traveled during the off-time, E' is the distance traveled by the long-stride runner 1- during the on-time, and E' is the distance traveled during the off-time. It shows the distance traveled, and compared to the distance traveled during the on-time, the rate of increase in the distance traveled during the off-time is greater for runner 1', who takes long strides.In other words, the distance traveled during the off-time The rate of increase in Beoff time is greater than the rate of increase. As a result, by looking at the increase ratio of on time and off time, it is possible to know the long stride/short stride degree 2 of runner 1 (difference in stride among people with the same foot).

Next, when changing the running speed, the speed will change by changing the stride rate and stride rate, or both, but if the stride rate is the same and the stride rate is different, the length of the foot will change. Runners with the same foot size have the same stride and short stride, so the angle θ1. θ2' is the same, it just speeds up the cycle, and is the on time.

The off-time ratios are the same, and only the on-time quantum off time is different. Therefore, the different stride rays I- of the two can be determined from the difference in the on-time quantum off time of the two.

In addition, if the stride rate is the same and the speed is changed by changing the stride, the on time and off time are the same for both, because only the stride and short strides are changed, and the on time and off time are the same. Since the only difference is the ratio to time, this difference in ratio tells us the different strides of the two.

Furthermore, if one runner is the standard and the other runner has different stride rates and strides, and the speed is different, the difference in on time + off time between the two is a difference of 1 - stride ray. From this, we can determine how much the stride rate is different based on the ratio of the quantum off times when both are on, and if we multiply the on time and off time of the runners as a reference by this ratio, the quantum off times when on will be the same for both. By doing this, it is possible to determine how much the slides have changed from the ratio of the on time to the off time.

Therefore, it is possible to determine how much the speed differs from that of the reference person. In this way, if you run a reference runner appropriately and know the on and off times and the speed at that time, you can find all the speeds of a runner with the same leg length and size as this runner.

The above details are about people whose legs are the same length and size,
If the length of the legs is different, as shown in Figure 10, the angle θ1
, 02' are the same for both, the distance 11 [A, C= is larger for a person with long legs, and even if the on time and off time are the same as a person with short legs, the distance traveled in that time is Since people with long legs are larger, their speed is faster. However, even if the length of the legs is different, the angle θ1. If θ2′ is the same for both, the stride/short stride is the same for both (the stride/short stride is the size of the stride for people with the same leg length, but (It's not a matter of stride size for people with different stride lengths), but leg length can be corrected by adding the same factor for leg length to the above theory.

Also, the difference in foot size is the difference in distance 111B-,
Even if the on-time and off-time are the same for people with larger feet, the distance traveled during that time will be greater and the speed will be faster. This can also be corrected by adding a function based on the size of the foot to the theory mentioned above.

Therefore, in order to find the running speed of Runner 1, determine in advance the person who will serve as the reference, and determine the length of his legs (H) and the 9-legged serration (S).
), and also measure the on time when this person runs once.

Let the off time be T2- and its speed be SP', and calculate these by actually running the vehicle. If the stride rate at this time is t and the stride is M, then C=TI −+72−...■ M −(T2 −/T+ −) ・Z−f (H
-)・f (8M...■ Z: Stride/short stride coefficient f(H-): Function based on leg length f(8-): Function based on leg size. Speed SP= is SP--M/l-[(T2-/T+-)・Z-f
(1-1”)・f (S-)]/(TI −-1-T
2-)...■, and these SP-, T2', T+-, f(Hl,
Since f (S') is measured in advance, Z-[SP-・TI −・ (TI −+T2 −
)]/[T2 ′ ・r (H−) ・f
(S->1...■, so 2 is found.

On the other hand, the speed SP of the runner to be measured is similarly SP= [, (T2 /TI) ・Z ・r (H
) ・r (S) ] / (TI + T2 )'・
...■, and by substituting the stride/short stride coefficient 7 found by formula ■ into formula 2 of ■, the speed of runner 1 becomes T1, T2, and so on. f(
H) and f(S), and this (0 equation) is a function of CPU9
Calculated at

In other words, Runner 1 has his own waist height (leg length),
Distance S between the first sensor 3 and the second sensor 4 (size of foot)
When inputted from the operation switch 13, the CPLJ 9 calculates f(H) and f(S) from these and substitutes them into equation (2).

Further, when the runner 1 runs, the first sensor 3 and the second sensor 4 generate a grounding signal shown in FIG. 11, and this grounding signal is sent from the transmitter 115 to the receiver vA8. Normally, the runner 1 looks from the heel to the ground and eventually releases the toe, so the on time 1 is as shown in FIG. 11. Furthermore, since the detector main body 7 has a clock circuit 12,
The time until the next ground signal is input, ie, the off time T2, is also determined. Therefore, the always-on rR interval T1 and 17:01alT2 are input to CPLI9L in accordance with the running of Runner 1, and CPtJ9 calculates the formula (2) at every fixed sampling time during running to find the running speed SP of Runner 1. It will be done. Incidentally, if the distance S between the first sensor 3 and the second sensor 4 is determined in advance by the manufacturer who sets these sensors 3 and 4 on the sole of the shoe, there is no need to input this distance S.

Moreover, if the CPU 9 calculates the traveling speed SP, from this,
Since travel data such as distance traveled and calories burned can be easily calculated, these values can be freely displayed on the display 11 by adjusting the operation switch 13.

In this way, the runner 1 can determine the running speed by inputting the distance S between the hip aH and the ground contact sensor only once in advance. Therefore, unlike the conventional example, there is no need to perform two calibration modes before using the device. Then, the ground contact time and non-ground contact time are accurately determined from the two ground sensors 3 and 4, and from these, the accurate running speed can be determined.

Although one embodiment of the present invention has been described above, it can be modified as appropriate within the scope of the gist of the present invention. For example, in the above embodiment, the ground signal is transmitted wirelessly, but the ground sensors 3 and 4 may be connected to the detector main body 7 by a cord if the cord does not get in the way.

[Advantageous Effects of the Invention 1] As detailed above, the present invention provides a driving data detection device that can be used easily without requiring calibration before use, and can obtain accurate driving data such as driving speed. can.

[Brief explanation of drawings]

Fig. 1 is a front view of a runner showing gMI14, which is a part of the device of the present invention, Fig. 2 is a block diagram, Fig. 3 is a plan view showing the arrangement of the ground sensor, and Figs. 4 and 5 are the principles of the present invention. FIG. 6 is a side view showing the arrangement of the ground sensor, FIGS. 7 to 10 are explanatory diagrams showing the principle, and FIG. 11 is a time chart of the ground signal. 1...Runner 3.4...Earth runner 7...Detector body 9...CPU <Arithmetic circuit) 11...Display device patent applicant Takei Kiki Kogyo Co., Ltd. Representative Patent attorney Ushiki Protection number 1
Figure 2 Figure 3 Figure 4 Δ Figure 6 g6 Figure 17 W1 118 Figure W9 Figure 1810 Figure 1111t

Claims (1)

[Scope of Claims] Two or more ground sensors arranged at a distance from each other near the heel and near the ball of the sole of a runner's foot and output ground contact signals with the road surface, and contact signals from these ground sensors. A running data detection device comprising: a calculation circuit that calculates running data such as the running speed of the runner based on the ground contact time and the non-ground contact time determined from the above, and a display that displays this running data.