JPH0312182A - Weight transfer displaying and diagnosing device - Google Patents

Abstract

PURPOSE:To time-sequentially know the change of load in right and left feet and timing to hit a ball clearly at a glance by detecting the change of the load in the right and left feet to be measured in fixed time, displaying the change time-sequentially in response to the detection of swing for a golfer and displaying the timing to hit the ball in response to the detection of a ball hitting tone. CONSTITUTION:An A/D converter 40 respectively converts a sensor trigger signal, trigger signal at the time of impact and the changes in the weight data of the right and left feet, which are detected by weight move measuring panels 31 and 32, to digital signals. From the input of the sensor trigger signal to the lapse of set time, a CPU 40 samples the change in the load of the right and left feet and outputs the change to a CRT display 41. Namely, when a club 22 is set in a top position and the weight is loaded to the left foot, it can be known that a body is inclined to left. When the follow-through of the club 22 is executed and the weight is loaded to the right foot, it can be known that the body is inclined to right. Then, at the time of the impact, the delay of the weight to be transferred from the right foot to the left foot easily is known.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a weight shift display and diagnosis device, which measures the movement of the left and right legs when a golfer swings a golf club, or when a baseball batter swings a bat, for example. The present invention relates to a weight shift display diagnostic device for diagnosing weight shift.

[Prior Art] For example, when a golfer backswings the golf club from the address position, a load is applied to his right foot, and after he downswings from the top position and impacts the ball, You must swing so that your weight is transferred from your right foot to your left foot. This type of weight shift is essential for properly swinging a golf club.

As an apparatus capable of measuring such weight shift, there is a golf swing analysis apparatus disclosed in Japanese Patent Application Laid-Open No. 60-2573. This golf swing analysis device is equipped with a plurality of load cells on each of the left foot load measuring table and the right foot 61 weight measuring table, and connects these load cells to a processing unit to display the calculation results. It is designed to display how to apply weight toward the toes and heels of the left and right feet.

[Problems to be Solved by the Invention] However, the above-mentioned golf swing analysis device does not perform a backswing from the golfer's address position, then downswing from the top position to impact the ball, and from the time until the follow throw. It is not possible to display changes in the load on the left and right feet over time. This is not limited to golf, but also applies to measuring the weight shift between the left and right feet when a batter swings the bat.

Therefore, the main object of the present invention is to provide a weight shift display diagnostic device that can clearly tell at a glance the change in the load on the left and right feet and the timing of impact over time.

[Means for Solving the Problems] The present invention is a weight shift display diagnostic device for chronologically displaying and diagnosing the weight shift of the left and right legs when an athlete swings a batting stick to hit a ball. a load measuring means for measuring the load applied to each of the left and right feet on which the athlete places his/her left and right feet; a swing detecting means for detecting that the athlete swings the ball hitting stick; a ball hitting sound detection means for detecting the sound of a ball hit when the ball is hit; a display means for displaying changes in the load on the left and right feet in time series; and a load type measuring means for a certain period of time in response to the detection of a swing. control means for detecting a change in the load on the left and right feet measured by the controller and displaying the change in the load on the left and right feet on the display means in chronological order, and for displaying the time point at which the ball was hit in response to the ball hitting sound detection means detecting the ball hitting sound; It is composed of:

[Operation] The weight shift display diagnostic device according to the present invention detects changes in the loads of the left and right legs measured by the load type measuring means for a certain period of time in response to detecting the swing of the athlete. In addition to being displayed in chronological order, the time at which the ball was hit is also displayed in response to the detection of the sound of the ball, making it easy to see at a glance the changes in the load on the left and right feet over time and the timing at which the ball was hit. can. In other words, when you swing the batting stick up or down, you can easily tell whether your entire body is leaning to the left or right depending on how much weight is applied to your left foot. You can easily find out whether the weight shift from side to side is fast or slow.

[Embodiments of the Invention] The following embodiments are an example of a weight shift display diagnostic device.
A case will be described in which the present invention is applied to a device that diagnoses by displaying the weight shift between the left and right legs when a golfer swings a golf club, but the present invention is not limited to this. It should be pointed out in advance that the present invention can also be applied to a case where a diagnosis is made by displaying the weight shift between the left and right legs.

FIG. 1 is a schematic block diagram of a weight shift diagnostic device.

In the embodiment shown in FIG. 1, when the golfer 1 swings the club 22, the weight shift of the left foot and the right foot is displayed over time, and the timing of impact is also displayed. Referring to FIG. 1, weight shift measurement plates 31 and 32 are provided for golfer 1 to place his left and right calves individually.
The output of constant plate 31°32 is amplified by amplifier 33.34,
It is converted into a digital signal by an A/D converter 40 built into the CPU 35. Further, a sensor 9 is provided to detect the swing, and a light source 8 is provided to face the sensor 9. The sensor 9 outputs a signal when the golfer 1 backswings the club 22 and blocks the light from the light source 8, and provides the signal to the sensor trigger generation circuit 39.

The sensor trigger generation circuit 39 generates a sensor trigger signal based on the output signal of the sensor 9 and supplies it to the A/D converter 40 .

Furthermore, a microphone 36 is provided to capture the sound when the ball 10 is impacted by the club 22. The output signal of the microphone 36 is sent to the amplifier 37.
After being amplified by , the signal is applied to the trigger generation circuit 38 . The trigger generation circuit 38 generates the ball 10 by the club 22.
When the microphone 36 captures the sound of the impact, it generates a trigger signal and supplies it to the A/D converter 40. In relation to the CPU 40, a CRT display 4
1, a printer 42, and a memory 43 are provided. The memory 43 stores in advance a program based on a flowchart as shown in FIG. 2, which will be described later, and also stores weight shift data of the golfer 1. The CRT display 41 displays the amount of movement of the left and right weight of the golfer 1 over time, and also displays the timing of impact, and the printer 42 prints them out.

FIG. 2 is a flowchart for explaining the operation of the weight shift diagnostic device, and FIG. 3 is a diagram showing the results of weight shift diagnosis.

Next, the operation of the weight shift diagnostic device will be described with reference to FIGS. 1 to 3. First, the CPU 35 causes the golfer 1 to backswing the club 22 from the address position, downswing the club 22 from the top position, and
A longer time, for example 4 seconds, is set as the time from impact to follow-through. golfer
1 backswings the club 22, the club 22 blocks the light entering the sensor 9 from the light source 8, so the sensor 9
provides the sensor output to the sensor trigger generation circuit 39. In response, the sensor trigger generation circuit 39 provides a sensor trigger signal to the A/D converter 40 within the CPU 35.

On the other hand, the weight shift measurement plates 31 and 32 output voltages corresponding to the loads on the left and right feet of the golfer 1. This voltage is amplified by amplifiers 33 and 34 and input to the A/D converter 40. Further, the microphone 36 captures the sound when the head of the club 22 impacts the ball 10 and provides the audio signal to the amplifier 37. The amplifier 37 amplifies the audio signal and supplies it to the trigger generation circuit 38. Trigger generation circuit 38 generates a trigger signal and provides it to A/D converter 40 .

The A/D converter 40 converts the sensor trigger signal, the trigger signal at the time of impact, and the change in the weight data of the left and right feet detected by the weight movement measurement plates 31 and 32 into digital signals, respectively. The CPU 40 samples changes in the loads on the left and right feet from the input of the sensor trigger signal until the set time, and outputs the sampled changes to the CRT display 41.

As a result, as shown in FIG. 3, the CRT display 41 displays changes in the loads of the left and right feet in chronological order from address to top, impact, and follow-through.

Further, the CPU 35 displays the timing when the microphone 36 captures the impact sound.

Then, the CPU 35 uses the printer 42 to print out the changes in the load on the left and right feet shown in FIG. 7 in chronological order, and also prints the impact position.

As described above, according to this embodiment, it is possible to display in chronological order the movement of the load on the left and right feet from address to backswing, downswing, impact and follow-through. , the characteristics and shortcomings of the swing can be known at a glance. In other words, if the weight is on the left foot when the club 22 is at the top position, it means that the body is leaning to the left, and if the weight is on the right foot when the club 22 is followed through. You can see that your body is leaning to the right, and you can easily see the delay in shifting your weight from your right foot to your left foot upon impact.

[Effects of the Invention] As described above, according to the present invention, in response to detecting the swing of an athlete, changes in the loads of the left and right legs measured over a certain amount of time are detected and time-series At the same time, the timing at which the ball was hit is also displayed in response to the detection of the sound of the ball, making it possible to clearly see changes in the load on the left and right feet over time and the timing at which the ball was hit.

In other words, when you swing the batting stick up, if the weight is on your left foot, you can see that your entire body is leaning to the left.
When you swing the batting stick down, if the weight is on your right foot, you can tell that your entire body is leaning to the right. It is also easy to know whether the weight shifts from the right foot to the left foot when the batting stick hits the ball, whether it is fast or slow.

[Brief explanation of drawings]

FIG. 1 is a schematic block diagram of an embodiment of the present invention. FIG. 2 is a flow diagram for explaining the operation of one embodiment of the present invention. FIG. 3 is a diagram showing diagnostic results according to an embodiment of the present invention. In the figure, 1 is a golfer, 18 is a light source, 9 is a sensor,
22 is a golf club, 31.32 is a weight shift measurement board, 3
3, 34, 37 is an amplifier, 35 is a CPU, 36 is a microphone, 38 is a trigger generation circuit, 39 is a sensor trigger generation circuit, 40 is an A/D converter, 41 is a CRT display, 42 is a printer, and 43 is a memory. show. Figure 2 Figure 1 Figure 3

Claims (1)

[Scope of Claims] A weight shift display diagnostic device for chronologically displaying and diagnosing the weight shift of the left and right legs when an athlete swings a batting stick and hits a ball, the device comprising: A load measuring means for measuring the load applied to each of the left and right feet by placing the left and right feet, a swing detecting means for detecting that the exerciser swings the ball hitting stick, and a hitting ball when the hitting ball hits the ball. A ball hitting sound detection means for detecting a sound; a display means for displaying changes in the loads of the left and right feet in a time series; Detecting changes in the loads of the left and right feet measured by the load measuring means and displaying them in time series on the display means, and responding to the detection of a hitting sound by the hitting sound detecting means at the time when the ball is hit. A weight shift display diagnostic device equipped with a control means for displaying.