JPH0444778A - Ultrasonic strike judging device - Google Patents

Abstract

PURPOSE:To quantitatively clearly perform strike judgment every pitching to the strike zone of each batter by arranging ultrasonic transmitter/receiver element parts in a home base plate, and measuring the vertical distance from the home base plate of a passing material such as a ball and a bat from vertical reflecting time. CONSTITUTION:From the time when a pitcher puts his axial foot on a pitcher's plate, brings a ball by both hands, and throws the ball to batter after a stop, set signal is turned on to start periodic transmission output of ultrasonic waves, and the set signal is turned off, after a proper time is measured, or after a sufficient time for the ball to reach a catcher, to stop the transmission output. The united time difference between the transmission output reflected by the ball and a bat and received is converted 5 to the vertical distance from a base plate every ultrasonic transmitter/receiver element part 1, 3. The strike range every batter is preliminarily registered, and compared with the orbit of the vertical distance of the above ball to conduct the strike/ball judgment 12 of the ball, further, the presence of a bat swing is judged from the orbit of the above bat, and as the integrated result, strike judgment of the pitching is determined.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention utilizes the output of ultrasonic waves and its reflected human force σ) waveform deformation and time difference to improve pitching by a pitcher and batting and swinging by a batter in baseball. In contrast, the present invention relates to a strike and ball determination device.

(Prior Art) The Umpire Act of the Baseball Rules stipulates that one of the special duties of the five umpires is to declare a ball and a strike. However, when it comes to +'9!' F balls, the above-mentioned umpire's judgment of the ball and strikes has traditionally been based solely on the visual estimation of the umpire standing behind the catcher, which can lead to inaccurate judgments. Because of the difficulties that arise and the absence of an objective judgment in such cases, it is difficult to respond to protests against identification after the implementation of the Hall and Strike Declaration. The problem was that it was impossible to present any evidence.

The present invention solves the problems as described above, and accurately, fairly, and quickly determines pitched balls and strikes, and
It is an object of the present invention to provide an ultrasonic strike determination device that can determine the swing of an L-bat and display the determination results.

(Means for Solving the Problems) In order to achieve the above object, the present invention transmits and generates ultrasonic waves in the vertical direction from the hose and base plate surface, and the ultrasonic waves No. 15 are reflected by the balls and the roses 1 to 1. Arrange a means to receive the No. 15 that returns, calculate the position of the reflecting object from the round trip time length and wave number factor, calculate the trajectory of the ball and the ball at the strike sea〉', 7. Depending on the pattern, the taste course, the strike zone (σ) relationship for each batter, the presence or absence of the batter's baratos ink, etc. ．． 1- Make a like judgment,
Furthermore, the present invention provides an ultrasonic strike detection and judgment display device that detects the type of pitch, ball speed, etc., and displays the results.

That is, in the present invention, the water hose base play 1.
The means for emitting ultrasonic waves in the direction perpendicular to the sphere and receiving the reflected signals (g means) are embedded in a matrix at intervals equal to or less than the diameter of the sphere, including the boundary line of the base.

When the pitcher puts his pivot foot on the pitcher's plate, holds the ball with both hands, and pitches it to the batter, the set signal is turned on, and the ultrasonic waves shown in - In other words, the set signal is turned off at a sufficient time to reach the catcher, and the transmission is stopped. The above fλ output is a sphere and a bar.
The time difference between being reflected and being received is converted into a vertical distance from the base play 1 for each ultrasonic transmitter/receiver element.

In addition, the strike/like range for each batter is registered in advance, and this is compared with the trajectory of the vertical distance of the ball mentioned above to determine whether the ball is a strike or a ball. The presence or absence is determined, and the pitch is judged as a strike based on the overall result.

In addition, based on the above-mentioned r-stage pattern calculation, the arithmetic circuit displays the ball's strike, linear velocity, and pitch type.

2) This is an ultrasonic strike-like determining device characterized by displaying the bat's strike, swing speed, trajectory distance between the ball and the ball, etc. (Function) tLA shows a configuration block diagram of an embodiment of the present invention.

The present invention has the following effects due to the configuration as described below.

A portion of the transmitter/receiver element section that generates and receives various types of ultrasonic waves in a direction perpendicular to the base plate is buried within the home base grate at one interval less than the diameter of the sphere. The shape of the home base grate is a pentagon as shown in Figure 2, and the transmitter/receiver element part (A11 to Am) is set to have a ball diameter of 7.29 to 1/4 from the circumference of a hard ball according to baseball regulations (9 inches to 9 inches 1/4). If the length is 7.48 cm, the minimum distance is 7/I from A11 to A1 in FIG. Of course, the third item 1 is an example, and Δ11~. A17, A2, i\2
7. Δ3, Δ37, Δ4, A/, 7 alone can realize the [I objective of the - part of the present invention;
It is clear that a detailed data analysis is not possible.

The receiver element section described in L is buried in a direction perpendicular to the surface of the Bohm base plate to prevent signal refraction and interference with other signals9.
The configuration is such that a transparent protective cover can be used to protect the transmitting/receiving element and strengthen the structure. When the ultrasonic wave No. 13 is emitted from the ultrasonic transmitter/receiver element, for example A, 11 and is reflected by the ball J or the bat, the signal is received by All.The frequency of ultrag$ (f), The wavelength (input) and propagation velocity (V) are expressed by the following equation (1).

v-"x person...-(1) For example, when a player plays a base, the ultra-F1 wave that is transmitted vertically from 1m to 2l is reflected by his sister or the bat and received (ha). J for 2 (i.e. t) and velocity (
From V), A11 buried in the base plate and the ball or bar...? The vertical distance (S) from - is given by equation (2).

S2t, Xv - (2) Vertical pressure of the ball #
Based on t (height), it is possible to determine whether a ball is struck or hit by comparing each batter's vertical strike zone, that is, the height between the top of the batter's kneecap and the armpit (see Figure 5b). If no reflected signal is received within a certain period of time after transmission, it is determined that the ball or bat did not pass through A11.

A lot of soil buried in Pombase 1/-to, J:
The ultrasonic wave transmitting/receiving element unit analyzes the pitch and performs calculations, thereby making it possible to physically display the trajectory of the ball 'N'f. To judge whether a pitch is a strike or a ball based on the trajectory of a pitch, a program is created based on the baseball rules.9For example, if the pentagonal prism 111 in Fig. 5(a) is pitched from the surface, enters the ball from the top, passes up or down, or hits the ball from the top. Pitches that pass through one corner of rectangle A11A17Δ47Δ/11 in Figure 3 on the horizontal plane as shown in Figures 6a and 6b and pass through the strike width of the batter's vertical plane are determined to be strikes. .

Meanwhile, at the same time, each of the above ultrasonic wave transmitters and receivers traces the trajectory of the batter's bat swing, and the tip to the ball 1 is in front of the home base plate (A11 in Figure 3).
If the pitcher passes A17) backwards, it will be determined as a strike regardless of whether it is a half swing or whether the ball is judged to be pitched.

Furthermore, in addition to determining strikes and balls as described above, the present invention is capable of image-processing data on pitching trajectories and determining the type of pitch by pattern recognition. For example, the balls A12, A22, A32, A42, A5 in Fig.
2, each passing time t after A12. t 3゜t4. If it deviates from t5, the speed of one ball is ``
It is obtained from the average of "distance ÷ time".

Therefore, according to the present invention, due to the above-described effects, a strike determination can be clearly and regularly performed for each pitched pitch in the strike zone of each batter, and the results can be displayed and made available to third parties. Because it can be confirmed, strikes can be judged more accurately and easily compared to the judgment made by the umpire's visual judgment in the past, and it is also possible to display the ball speed, pitch type, 21st pitch, bat trajectory, etc. This is a variation of the possible effects.

(Example) One embodiment of the present invention, f-series, will be described below using l. As shown in FIG. 3, ultrasonic transmitter/receiver elements (A11 to A m ) are embedded in the base plate of the PONO 1 at intervals less than the direct path of the ball. An example of embedding Ho 1, base play 1-, /\ is as shown in Figures 3a to 3C, where the ultrasonic transmitter/receiver elements (A11 to A+n) are emitted perpendicularly to the home base plate surface and one reflection f3 is generated. The part 5 of the true home base plate width dimension 3 (see Figure 2) is a white object, and the outside 6 is black. The ultrasonic transmitting/receiving element part (All-Am) is fixed, surrounded by an object based on the structure, an auxiliary object 4 for the effect of collecting the Buddha Buddha signal and preventing the interference of external signals, The lead wire 7 of the element connects it to the operating section.

To transmit ultrasonic waves, when a set signal is turned on as shown in FIG. 7, ultrasonic waves are simultaneously and periodically output from each ultrasonic wave transmitter/receiver element section (A11 to Am). It is assumed that the output period is sufficiently larger than the frequency of the ultrasonic wave.

Next, in order to show an embodiment for measuring the height of a pitcher or a bat in the vertical direction, the operation of one of the ultrasonic wave transmitting/receiving elements A11 will be explained with reference to FIG. When the pitcher starts pitching, the Sera 1 signal is turned on, and ultrasonic waves of two different wavelengths, input and input 2, are simultaneously transmitted from the 811. Input 1〉〉Person 2, the propagation speed Vl of the ultrasonic waves of wavelength input 1 and input 2, V2 is Vl >
>V2 >> Output signal (1) to (T
I> is transmitted, and the input 2 ultrasonic waves are emitted from (5) to (6) (
When the ball was directly above A11 during M, Vl
>>V2>2 (ball speed), so reflected fS number 1 and reflected signal 2
Half of which time difference (2t) (i.e. t) and speed (■2
), the height (S) from A11 to ball J is given by formula (3).

S=t×■2... (3) Of course, strictly speaking, 5=tX'\71 xV2 / (vl
-V2), but since ■1>>\12, it can be converted to equation (3).

Therefore, as another embodiment, it is obvious that it is possible to emit an ultrasonic wave 1 with a wavelength of 1 from A11 and measure the time it takes for this reflected signal to be received.

When there is no reflected signal, it can be determined that there was no reflecting object vertically to the receiving element during that time period.

In the above embodiment, the ultrasonic transmitting/receiving elements are arranged in the home base plate as shown in Fig. 3, but as an applied example, the ultrasonic transmitting/receiving elements are also arranged and buried in the periphery of the home base plate. It is clear that it is possible to grasp the trajectory of the ball outside the base range.

(Effects of the Invention) As is clear from the embodiments described above, the present invention arranges an ultrasonic transmitting/receiving element section in a Bohm base play I- in baseball, and from the reflection time in the vertical direction, etc. Utilizing a method that measures the vertical distance from the home base of passing objects, it is possible to accurately determine pitches and bats in each batter's strike zone between their feet. The present invention provides a device for performing the above-mentioned judgment, and has the effect of eliminating the inaccuracy and difficulty caused by the conventional umpire's judgment of strikes and balls based on only 11 measurements. As a result, the pitching speed, type of pitch, trajectory of the ball, and trajectory of the ball can be displayed, which has the effect of being clearly visible to a third party and objectively confirmable.

Also, because it is numerical data, it can be recorded and analyzed.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of the configuration of an embodiment of the present invention, Fig. 2 is a shape diagram of the Bohm base plate according to the baseball regulations, and Fig. 3 is an ultrasonic wave within the home plate 2λ rate in an embodiment of the present invention. Examples of arrangement of transmitting/receiving element parts, Figures 4a-4c
The figure shows an example of a horn according to an embodiment of the present invention, a part of which is embedded in the ultrasonic optical receiver fi:+ in the base plate, and part 5a.
Figures 6a and 5) are explanatory diagrams of each batter's strike zone, Figures 6a and 6)J are explanatory diagrams of strike examples of pitching trajectories in the baseball regulations, and Figure 71 is an explanatory diagram of an example of a strike of a pitching trajectory according to the baseball regulations. FIG. 8 is a diagram illustrating the operation of one ultrasonic transmitting/receiving element section in an embodiment of the present invention. In FIG. 1, 1.--Ultrasonic emitting element part, 2. Ultrasonic reflection receiving element part, 3... Ultrasonic emitting part, 5 sending part,
44. Ultrasonic reflection receiving circuit section, 5... 5'1 part of vertical distance and time to reflecting object, 6-. Set signal control section, 7. Batch I~trajectory counting section, 8... - Bat strike judgment section, 9... Bat trajectory and speed display section, 1o
-・Strike zone data for each batter, 11... Pitching trajectory counting section, 12... Pitching strike determination section for each batter, 13... Pitching strike determining section, 1
4-- Pitching strike determination display section, 15-- Pitching type and course determining section, 16- Pitching type and course display section In Figures 4a to 4c, 1. Ultrasonic transmission Receiving element part, 2-・Protective cover・, 3・・True port 1,
Method to base play 1, 4...Reinforcement part, 5...True ho 11, Base play-1~dimension part, 6-...True Bauhm base plate X [law peripheral part, 7...Saw 1~line. 1-'J Applicant Urasabe (and 3 others) Engraving of the drawings (no changes to the content) 1st drawing: Block diagram of the configuration of an embodiment of the present invention 1...Ultrasonic transmitting element section 2... Ultrasonic reflection/reception element section 3...Ultrasonic transmission/transmission section
4...Ultrasonic reflection receiving circuit unit 5...Vertical distance and time counting unit to the reflecting object, 6...Set signal control unit 7...Bat trajectory counting unit 8
... Bat strike determination section 9. Bat trajectory and speed display section 10. Strike zone data for each batter 11. Pitching trajectory counting section 12. Pitching strike determination section for each batter, 13. Pitching. Strike judgment section 14... Pitching strike judgment display section 15... Pitch type and course judgment section
16. Pitching pitch type and course display part Fig. 2, Fig. 4a to Fig. 4C: Example 1 of embedding an ultrasonic transmitting/receiving element section in the home base plate according to an embodiment of the present invention... Ultrasonic transmitting/receiving Element part 3... True home base plate dimension 5... True home base plate dimension part 6... Home base plate dimension peripheral part 2... Protective cover 4... Reinforcement part 7... Lead wire procedure correction (method) Person amending the name of the indicated invention in the case Address (residence) related to the case 1990 Patent application No. 150632 Ultrasonic strike determination device

Claims (1)

[Claims] A first counter that counts the output, the reflected received signal, the wave number, and the time, comprising means for transmitting and generating ultrasonic waves in a direction perpendicular to the home base plate surface, and means for receiving signals reflected from the pitch and the bat. a second counting means for counting the height from the home base plate based on the first counting result; and a third counting means for converting the vertical distance from the home base plate of the strike zone width of each batter into a time width.
counting means, means for determining whether a ball passes through the strike zone of each batter by calculating the second count value and the third count value, and determining a strike from the trajectory of the bat by the first counting means. A means for determining a strike is installed, and these three-dimensional detection signals are used to display a strike determination display, a ball speed display,
An ultrasonic strike determination device characterized by displaying pitch type, course, bat trajectory, etc.