MXPA97006214A - Procedure to capture or feel the surface contact of an object used in a sport with a container base - Google Patents

Abstract

A procedure and an installation for carrying out the procedure to record and evaluate the recorded heat traces, which occur in a sport between an object used in that sport (person 4, ball 5) and a contact base (surface of game, 2, 9 or limit of field 3, 1

Description

PROCEDURE TO CAPTURE OR FEEL THE CONTACT SURFACE OF AN OBJECT USED IN A SPORTS WITH A BASE OF CONTACT. DESCRIPTION OF THE INVENTION The invention is based on a method for capturing a contact surface of an existing object in a sport and ball, player, ring, tub with a base contact floor, surface of table, boundaries of the field or similar) according to type a the main claim. A principal field of application of the method of this type is especially in tennis to determine the touch surface of the balls with the contact base, for example the covering of the floor or one edge of the net. During a game of Tennis it is necessary to be able to determine in a safe way the precise positions of the touch surface of the ball on the contact base. It is worth determining, for example, if the rebound position (contact surface or pressure) of the ball is still inside the field of play, or if I touch an outside line or if I am out of the field. It is also desirable to be able to know if there was a previous contact of the ball with a singing of the net.

According to the state of the technique, the contact coordinates of the ball on the contact base are determined by a line judge. However, this method has the disadvantage that it is inaccurate with the danger of false decisions. Place the ball with optical or electromagnetic surveillance devices. In a known installation for recognizing the position of a ball (De 42 33 541) a detector-emitter unit is arranged in the ball, where the receiver-emitter element is or is arranged in the vicinity of the line, the position fixation. of the ball takes place by the evaluation of the reflections of the impulses radiated by the active elements to the receivers. This installation for recognizing the position of the ball has the disadvantage that constructive variations of the ball or of the playing field are necessary. The ball itself is also observed instead of the contact surface of the ball with the contact base. Also in another known system for fixing the place of the ball (WO 39/00066) which applies especially to tennis, the course of a ball is monitored by a predetermined line. Here either emitters and / or receivers with electromagnetic waves are used above or below the floor of the tennis court, which evaluate a signal reflected by the ball. Thus the tennis ball must have special magnetic properties. Also with this system constructive variations are needed both in the ball and in the playing field. Here, too, the ball is watched and not the contact surface of the ball in the contact base. Another disadvantage of this known system is that the line to be monitored, especially a boundary line of the field, is considered an idealized geometric line. A true course, on the contrary, is frequently deviated by covering one and the same floor covering, notably one line. These deviations can not be taken into account or only with great complications in the known systems. Another disadvantage of these known systems is that the result is influenced in part by the very high velocities of the ball for faults in the course of time. Another disadvantage is that the receiving and transmitting system can be influenced by the person who hits the ball in a negative way and that a combination with independent television signals is hardly possible. The method according to the present invention or with the apparatus of the present invention with the features of the main claim or claim 7, has the advantage, however, that the position of the object, for example, is not explicitly determined. ball, but the contact surface of the object used in sport with the contact base. Here, the process according to the invention uses the heat traces produced due to the heat of friction of the object with the contact base. The process of acquiring with the invention measures the temperature difference between the heat footprint and the contact base., points it out and evaluates it, with which this contact surface is displayed on a screen. Since the method according to the invention determines little the position of the object used in the particular sport, but rather takes the pressure from the heat trace and evaluates it, the contact surfaces can be captured - especially those of the more different types, for example circular or oval in tennis ball pressures or automobile tire tracks in curves. This way a person can be captured or their pressure on the ground when running on the base of contact. an advantage of the process according to the invention that the contact surfaces captured. with the marks found in the contact base D, especially boundary lines, they can be relatively established, or their relative position from one to the other can be determined. A prerequisite for this is that the marks or lines are captured together with the procedure of the invention. This is made possible by the necessarily different conformation in color of the marks and lines in the normal case, since different colors have different reflection values of the thermal radiation and with this they can be captured together with the method according to the present invention. In case this is not sufficient then there is the possibility of providing the corresponding marks with metallic powder, for example aluminum, or with a visible lacquer in the infrared field, or something similar. Both methods of treatment are very simple and require minimal expense. Another advantage of the present invention is that it is not necessary to constructively change the existing object in the particular sport or the contact base. Another advantage of the present invention is that there are no inaccuracies of the measurement in relation to the high speed with which the object moves in the sport considered. A further advantage of the present invention is that accurate measurements are made possible by the relatively slow cooling of the heat tracks. After the cooling, a new measurement can take place there, while the measured measurement can be stored for a subsequent presentation. THIS makes it possible to make measurements at different times in the same places, comparing them with each other. For example, the path selected by a tennis player and how that path deviates from the ideal path. Another advantage of the present invention is that the geometrical accuracy of the surface course and the surface expansion of the marks and lines, especially the boundary lines, in the contact base are of no importance to the contact surfaces that have to be captured. Another important advantage of the invention is that due to the two-dimensional consideration of the contact base with the heat traces that are found there can be no parallax faults, which allows an exact determination of the position in relation to the marks of the contact base. While the degree of freedom for the placement of the measuring facility above the contact base is relatively large. The traces of heat captured will be visible, in addition, at the right time.

On the other hand, an advantageous nation-comer of the invention is the object existing in the ball, where the contact will be the retrieval of the ball and / or an area or edge of the ball. As a sport, it has been thought first of all in the Tennis, Ice Hockey, table tennis but change in billiards, with a common contact surface captured or sensed by a small number of thermographs in which a relatively high speed of the object takes place, with unexpected and difficult individual situations to catch. So much so that in tennis the limit cases are especially critical, if the ball is still inside the playing field or has touched the line or if it was just outside the line, in other games with ball, such as for example hand pelota and also football, it is interesting to measure whether the ball stopped in the goal was already inside the goal line or not yet. The base of contact would be, in the latter case, the goalkeeper's glove, where the signaling heat trace, although existing only for an extraordinarily short time, can be determined. According to an advantageous embodiment of the present invention, the existing object is a tire existing in a vehicle, where the contact base will be the covering of a roadway or the like, the problem of capturing the individual situations in such a sport type. As for example car racing, it consists first of all. in which it deals with long stretches, and independently of the previous one, if it is a four-wheeled vehicle such as a racing car or a motorcycle or bicycle. Measuring sites are provided first of all in those regions, in which extreme situations occur, such as for example braking or due to a curve, a displacement or sudden acceleration after a curve that produces a high friction against on the ground Such measurements in extreme situations can on the one hand be obtained to analyze accidents, but also for teaching to present optimal solutions. It is especially interesting that such indications can be combined with television presentations, in which individual critical situations can be clarified with the combination of the normal image on television and the presentation by the thermographs. Especially in car races, it is not possible for the spectator, with the high speeds that are presented, to appreciate the different qualities of the driver who wins when crossing a curve or something similar. Even when television is digitized and displayed in a delayed image, those differences are hardly reecnocioies. otherwise, a comparison of thermographic indication of different venicuios is presented. The observer can very quickly determine the qualitative differences and just as much from the point of view to the simple observation as from the point of view of the instruction. In addition, with another alternative conformation to the invention, the existing object in the sport will be a hoop that is in a sports and winter apparatus, where the contact base is a floor covering by the general frozen ice. In such types of sport, as for example with sliders or bobsled ee also present extraordinarily large speeds, for example of up to 150km / h and this on a track formed of ice tubes. At these high speeds, the ideal line naturally plays a decisive role. Any deviation from that ideal line means milliseconds of lost time, which then can cost the victory. Also here because of the length of the track, the heat trace measurement facility is arranged in such zones where the danger of deviations from the ideal trace is maximum. Here, too, the measurement and maintenance of the footprint selected by the athlete can be made for training reasons, but also for information of the spectators and precisely in a preferred way of the television. THUS can such thermographs be arranged in places, which in general are not achievable for the viewer. Also here, the application of the invention, as well as in most other sports, the popularity of each sport is increased, because the spectator can be put in another way within the role of the athlete, than what is possible in a normal presentation. of TV. Apart from the mentioned indication of the footprint, it is also possible to stop or show at what point the athlete has confronted and the athlete himself can judge whether that confrontation has been necessary or not. According to another advantageous alternative of the present invention is the existing object in the sport a ski, where the base of contact would be a snow track, naturally that track can also have ice as it happens in most cases. Especially in ios Short stretches of travel are made possible with relatively few thermographs to capture the heat traces, which the ski leaves behind on the runway. Also here the demonstration method can be used for training purposes and be of great advantage. But it can also be used first of all to give the television viewer the possibility of comparing the quality of the different competitors. It is possible to determine by means of the invention. If the skier for the frequent use of the supports has generated too much friction loss. or if by the distribution of the weight or other conformation of the oscillation it can reach ana better ideal line and higher speeds. It can also be determined, which travel styles are more risky and include a danger of damage. Thus the invention is left to determine, and this pressure is used to jump and as this acts on the length of the flight. According to another advantageous embodiment of the invention, visible marks in the infrared region which can be made recognizable are applied to the contact base. Apart from this, the comparison values that in general are invisible to the target, can be made recognizable, with which the procedure can find application also in the selection, so that selections are made that the normal eye can not do, and that by the superimposition of shots by means of the thermographs on the television screen, they will become visible According to an essential conformation of the invention, as already mentioned, the heat traces taken are critical to the observation, which can be to be done both by the projection on a cloth wall and by the transmission by television. By means of the present invention, the ability to not only make visible the signs of the heat traces in the sport is achieved, it is first of all to be linked with the indicator procedure to the television camera. This takes place especially by the indication of the data firstly by a thermograph and then by a television camera. Other advantages and advantageous configurations of the invention are captured by the following description and claims in reference to the drawings. DESCRIPTION OF THE DRAWINGS Several embodiments of the object of the invention are represented in the drawings. Sample: Figure 1 the application of the invention in a tennis court; Figure 2 a tennis court in a plan view: Figure 3 contact of the ball and the floor in the plan view; Figure 4 shows the application on a bobsied track; and Figure 5 the application in a racing section. Figure 1 shows the application of the invention for the sport of tennis and precisely in a strongly simplified perspective. In a place of tennis, there is a field of play 2 determined in the usual manner by line limitations 3. Very simplified players in their design 4 play with a ball d, which correspondingly has to be hit on a tennis net 6, and where they have to maintain the known regias for that sport of tennis. In an arbitrator seat 7 sits an arbitrator 6, who watches over the maintenance of the rules and can correspondingly intervene in the game. It is helped by other line judges, who must observe if the 5-ball has fallen or touched inside the game champion 2 or has played the line exactly or has arrived off the field of play. These observations are, as is well known, very difficult, since the ball, especially in sacks, can have an extraordinarily high speed, so that in limited cases, even an experienced line judge has problems to determine if the ball still touched the limit line. or it was already outside the playing field 2. It should also be noted by the line judge if the ball's exit was still in an intermediate field 9 or its limiting line 11 or if it had already landed on the remainder of the playing field 2. Even a television camera fails at these high speeds to almost miss the current shock point. In accordance with the invention, the chambers 12, which are supported in the bracket constructions 13, have been disposed at the center of each of the halves of the playing field and at a sufficient height. These cameras work with infrared and can also present a possibility of digital presentation or of another type, in each case it may be reproduced on a screen apparatus 14, which may be a television. The arbiter 8 is equipped in its place with a more specially constructed screen device, with which each shot is pointed out and which is also repeatable. This demonstration serves not only for the referee 8 to control the game faults in relation to the touch of the ground by the ball, but the signaling can be used at all times for the broadcast of television to the spectators, and thus be related to propaganda. As shown in Figure 2, the two chambers are mounted in the center of the two halves of the playing field 2, where the contact of the ball can be picked up by the central measuring points. The infrared image automatically shows the development of the friction heat in its place and stores it, and after a few seconds the heat of friction of the contact surface disappears. The velocity of the ball thus has no influence on the result, since only the heat of friction that remains and not proper to the ball is captured. The accuracy of the measurement is in the margin by one millimeter. In FIG. 3, a picture of the tennis ball and a contact surface of the tennis ball in the playing field are in a plan representation for the comparison to the left, the contact surface is ovate, since firstly The ball is blocked and the second one slides a determined section on the ground, in a non-elastic obstacle it will be a line. In the second embodiment shown in FIG. 4, it is an ice channel 16 of a Bobsled track, where two different tracks 17 and 18 of the bobsled are shown by the heat chamber and thus in the form represented can be given again at a later time. Here it is clearly recognized that trace 18 broadly runs on the ideai line, while trace 17 shows that the corresponding bobsled has moved somewhat outward and that it only has a longer path., which implies time, but also possibly a higher heat of friction. Here, too, there is the special advantage that such fingerprints can be shown on television, to give the athlete the possibility of criticism, on the one hand, and on the other hand, what spectator can explain, because one or the other did not win. . In the third exemplary embodiment shown in FIG. D, a running ventrician 19 d is shown on a running section 21, leaving behind heat traces 22 of the rims. As can be clearly seen here, the heat traces have variations 23, which have been attributed to braking, displacements or accelerations, which each time can have another heat development from the friction as a consequence. In this way, the fingerprint demonstrations as well as the demonstrations linked to the vehicles are captured or removed, as regards their faults and advantages for the behavior on the course. Thus, for example, an imprint of the heat is interrupted at the moment when the veniccule rises from the ground. All the characteristics that can be taken from the description, the claims and the drawings can be essential for the invention both individually as in any combination.

REFERENCE LIST 1 Place for tennis 2 Field of play 3 Lines of limits, d 4 Player 5 Ball 6 Red for Tennis. 7 Pedestal for the Judge. 8 Judge or arbitrator. 0 9 Intermediate field. 10 11 Boundary line of 9 12 Camera. 13 Corbel constructions, ld 14 Display device ld Arbiter device 16 Ice channel 17 Footprints 18 Footprints 20 19 Race cars 20 21 Race section 22 Heat tracks 23 Variations of 22. 25

Claims (8)

1. CLAIMS 1.- Procedure for the capture and visible formation of the contact surface of an object or sportsman existing in a sport with peiota, d motor sport, fencing, and riding, winter sport with a base of contact, characterized by ios Following steps, with at least one thermograph, the heating of the contact base resulting from the contact of the object or the athlete with the contact base is measured, and with the help of an image evaluation or elaboration device, the heating measured by The thermograph to obtain final images for the obsr.
2. 2. Method according to claim 1, characterized in that the object is a tire that is located in a vehicle and the contact base of a roadway.
3. 3. Method according to claim 1, characterized in that the object at least in a ring that is in a winter sport instrument and the contact base is ice.
4. 4. Method according to claim 1, characterized in that the object is a ski and the contact base a track.
5. 5. Procedure according to claim 1, characterized in that the object is a ball and the base of contact is the playing field of a sport with a peiota.
6. 6. Method according to one of the preceding claims, characterized in that the d infrared signals are recognizable to the obsr in the final image.
7. 7. Procedure for the uptake and visible formation of the contact surface of a tennis peiota used during that sport with the playing field or 10 network, characterized by the following steps: the limiting lines of the playing field and the edges of the net are marked with a recognizable material in the infrared region, with at least one thermograph measuring the heating produced in the playing field or in the network by the contact of the tennis player with the playing field or with the net, and with the help of an image evaluating device, the heating measured by the thermograph is evaluated or elaborated as recognizable final images for the obsr .
8. 8. Method according to one of claims 1-6 or 7. characterized in that the marking or marking is carried out with visible lacquer in the infrared area that can be picked up by the thermograph. . -Procedure according to one of the 2d claims 1-6 or 7, characterized in that, or marking or marking is done with metallic powder, visible in the infrared zone, especially aluminum, which is captured by the thermograph. 10. Method according to one of the preceding claims, characterized by the fact that the elaboration and evaluation of the images is carried out electronically to obtain the final images. 11. Method according to one of the preceding claims, characterized in that the final images are made available for advertising. R E S U E. A procedure and an installation for carrying out the procedure for registering and evaluating the registered footprints of caior, which occur in a sport between an object used in that sport (.person 4, peiota d) and a contact base t surface, is presented. of game, 2, 9 or limit of field 3, 11 j.