RU2365399C1 - Device for training to play billiards - Google Patents

Abstract

FIELD: games.

SUBSTANCE: invention is intended for teaching technique to play billiards. Device for teaching to play billiards contains billiard table, cues, balls, signal receiver and computer. Optical viewing devices are mounted on the outside surface of the cushion. They are designed for measuring values of liner movement of optical viewing devices. Electronic converters, power units, signal transmitters and capsules with liquid are placed in the hollow space of cue and inside of one or several balls. Bars and strain sensors are fixed in cantilever fashion on the inner surfaces of the capsules, marks reflecting orientation of bars are applied on the outside surfaces of cue and balls, strain sensors are connected with the computer through the transmitter and receiver.

EFFECT: possibility of teaching sportsmen of any level technique to play billiards is appeared.

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Description

The invention relates to simulators of sports games.

The device is designed to practice the technique of playing billiards for athletes of any skill level using a conventional billiard kit. Devices for this purpose do not currently exist.

The closest analogue can be considered a device (hereinafter referred to as the "simulator") for teaching golf (patent GB 2397533 A1, M. cl. 7 A 63B 69/36). The simulator consists of a platform for installing the ball, embedded in the platform of displacement sensors, a processor, a display and a video camera. The video camera and sensors detect the movement of the club and the ball when swinging the club and hitting the ball and transmit the corresponding signals to the processor. Based on the data received, the processor calculates the speed, direction of the ball’s flight and the point of its fall, and displays this information on the display screen. Similar tasks, as well as several other specific ones, are also faced by the billiard simulator. Therefore, this technical solution can be taken as a prototype.

The disadvantages of this solution in relation to the task of constructing a billiard simulator based on it are as follows.

1. The ball is hit in a strictly defined place on the platform, while in billiards the position of the cue ball within the table can be any. This will require the determination and introduction into the processor (hereinafter referred to as the "computer") of the initial coordinates of the ball.

2. A hit is made on only one ball, and only its motion parameters are calculated. In billiards, it is necessary to determine the motion parameters of the cue ball and the aiming ball. This will require the determination and input of the initial coordinates and the aiming ball.

There are no devices for determining coordinates in the prototype simulator.

3. The instantaneous positions of only one ball are measured; at least two balls simultaneously move in billiards. The sensor system of the golf simulator does not understand that there are several balls.

4. The angular fluctuations of the club, the angular velocity of rotation of the ball and the angles of the club and the axis of rotation of the ball relative to the platform are not measured. These parameters in billiards have a significant impact on both the accuracy of the hit and the tactics of moving balls.

5. The strength of a club hitting the ball is not measured, whereas in billiards the force of a cue hitting the ball affects the accuracy of the hit and the arrangement of the balls after the hit.

6. The nature of the movement of the club during a swing and stroke is completely different from the movement of the cue, which will require other equipment to determine the parameters of its movement.

7. The placement of sensors under the surface of the platform in relation to the pool table will require its special design and significantly increase the cost of the table.

8. The presence of a video camera increases the cost of the simulator and will require special software to filter out interference caused by people entering the training zone. Errors are possible due to the simultaneous movement of several balls.

The last two circumstances do not allow the use of existing pool tables for users to complete a billiard simulator.

Thus, to build a device for learning to play billiards on the basis of technical solutions of the prototype, only the general idea of combining real physical accessories of the game with measuring equipment can be used, which sends out through the computer information on the motion parameters of mobile game devices (in this case, cue and balls) external information devices.

The aim of the present invention is to provide a device for learning the game of billiards, suitable for use on any pool table.

This goal is achieved by the fact that in the device containing the billiard table, cues, balls, signal receiver and computer, on the outer surface of the billiard table, there are devices with optical sighting devices placed on them, designed to measure the linear displacements of optical sights, in the cavity of the Kiev cues and inside one or several balls are placed electronic converters, power supplies, a signal transmitter and capsules filled with liquid, beams are cantilevered on the inner surfaces of the capsules and strain gauges, on the outer surface of the cues and balls are marked showing the orientation of the beams labels, strain gauges through the transmitter and receiver are connected to the computer.

The device (Fig. 1) consists of a billiard table - 1, cues - 2, balls - 3, a signal receiver - 4 and a computer - 5. On the outer surface of the table - 1 devices are installed - 6, designed to measure the linear displacements of optical sights - 7. In the simplest case, devices - 6 are rulers that are attached to the table - 1 with clamps - 8. An optical sight in the simplest case is a mechanical sight attached to the ruler with a sliding clamp - 9.

In the cavity of the turnip cue - 2 (Fig. 2) and inside one or several balls - 3 (Fig. 3) capsules - 10, electronic converters - 11, power supplies - 12 and the signal transmitter - 13 are placed.

Capsules - 10 (figure 4) are filled with liquid and provided with membranes - 14 to compensate for the volume expansion of the liquid. On the inner surface of the capsule - 10 - beams are cantilevered - 15 ... 20 and their deformation sensors - 21 ... 26. The beams are fixed in pairs at opposite points on the surface along the axes of the rectangular coordinate system XYZ with the beginning in the center of the capsule. However, there may be another arrangement, for example, at the vertices of an inscribed polyhedron. Beams and deformation sensors can be made, for example, in the form of foil petals with strain gauges glued to them. Converters - 11 provide power to the sensors and transmitter - 13 and the conversion of the sensor signals in the form necessary for the transmitter. The transmitter - 13 may be a radio transmitter, in which case the receiver - 4 will be a radio receiver, but there may also be a transmitter and receiver in the form, for example, of ultrasonic devices.

On the outer surfaces of the cues and balls with the equipment marked (figure 5) marks, for example, in the form of intersecting arrows - 27, showing the orientation of the beams 15 ... 20. One arrow is directed along the Y axis, the other along the X axis of the ball, the point of their intersection shows the positive direction of the Z axis.

The proposed device operates as follows. Before starting the training, the user installs the device - 6 with the reticle - 7 on the outer surface of the billiard table - 1 and fastens it with clamps - 8. Then, moving the reticles - 7 along the devices - 6, they sight the first ball equipped with the equipment and enter the X11 values and Y11 samples on the rulers - 6 to the computer - 5. In the same way, it determines and enters the coordinates X21 and Y21 of the second ball into the computer. Further, the user through the keyboard asks the computer for advice or tells him his decision on the game plan. The computer analyzes the situation and issues its recommendations on the monitor screen. And so, in the dialogue mode, they come to some kind of solution, after which the user orientates the ball-cue ball and the aiming ball with marks along the corresponding sides of the table, and makes a strike with the point of intersection of the marks up. If you need to know the quality of the cue swing and the strength of the cue hit on the ball, the user takes the cue so that the point of intersection of the marks is directed upwards.

During the movement of the cue and balls, inertia forces proportional to their linear accelerations act on the beams of their equipment. Under the influence of these forces, the beams bend, and in each pair in one direction - against the direction of acceleration. For example, when (Fig. 4), the beams 15, 16 are bent along the X axis, their deformation sensors 21, 22 generate signals proportional to the bends, and therefore to the accelerations. At the same time, the balls rotate around the axes, the instantaneous position of which changes in time and space, and the cue makes angular oscillations. During the rotational movements of the cue and balls, the liquid contained in their capsules - 10, lags due to the low viscosity and inertia from the rotation of the walls of the capsules. As a result, for example, during rotation around the Z axis, the beams 15, 16 press on the liquid, trying to entrain it behind the capsule. This dynamic pressure is proportional to the angular velocity of the capsule and causes a deflection of the beams, and in the pair of beams they bend in different directions. The beam sensors also respond to these bends; as a result, one pair sensor produces a signal proportional to the sum of forces from linear acceleration and angular velocity, and the other proportional to their difference. These signals are transmitted through converter 11, transmitter 13 and receiver 4 to computer 5, where they are mathematically processed. The signals are divided into proportional to linear accelerations and angular velocities, and integrated, as a result, information is generated on the instantaneous values of linear and angular velocities, rotation angles, and distances covered by the corresponding ball or cue. Further processing of the information according to the algorithms known in the theory of “loose inertial navigation systems” provides information on the trajectories of the cue ball, sight ball, cue, ball hit points, cue hit force on the ball, direction and dynamics of the ball rotation axes. This information in a form predefined by the user of the computer is output to external information display devices.

Since the device directly measures all the movement parameters of the cue and balls, it provides the highest possible informational content of a workout, inaccessible even to a trainer of the highest qualification. And in combination with the software that such a trainer can develop, the proposed device will provide a very high quality workout. The design of the device allows you to use it on any pool table for learning any game of billiards.

Claims (1)

A device for teaching a game of billiards, containing a billiard table, cues, balls, a signal receiver and a computer, characterized in that on the outer surface of the board of the billiard table there are devices with optical sighting devices placed on them, designed to measure the linear displacements of optical sights in cavities turnies of cues and inside one or several balls are placed electronic converters, signal transmitters and liquid-filled capsules, on the inner surfaces of the capsules are cantilevered LCI and strain gauges, on the outer surfaces cues and balls plotted depicting the orientation of beams tags strain gauges are connected via the transmitter and receiver to the computer.

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