EP2136887A1 - Zone de déplacement pour un objet mobile et dispositif d'évaluation permettant de déterminer une position d'un objet mobile - Google Patents

Zone de déplacement pour un objet mobile et dispositif d'évaluation permettant de déterminer une position d'un objet mobile

Info

Publication number
EP2136887A1
EP2136887A1 EP08734703A EP08734703A EP2136887A1 EP 2136887 A1 EP2136887 A1 EP 2136887A1 EP 08734703 A EP08734703 A EP 08734703A EP 08734703 A EP08734703 A EP 08734703A EP 2136887 A1 EP2136887 A1 EP 2136887A1
Authority
EP
European Patent Office
Prior art keywords
magnetic field
area
field generating
conductor
distance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08734703A
Other languages
German (de)
English (en)
Inventor
Walter Englert
Tilman Bucher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cairos Technologies AG
Original Assignee
Cairos Technologies AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cairos Technologies AG filed Critical Cairos Technologies AG
Publication of EP2136887A1 publication Critical patent/EP2136887A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
    • A63B71/06—Indicating or scoring devices for games or players, or for other sports activities
    • A63B71/0605—Decision makers and devices using detection means facilitating arbitration
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B43/00—Balls with special arrangements
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B63/00—Targets or goals for ball games
    • A63B63/004—Goals of the type used for football, handball, hockey or the like
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G01V3/081—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices the magnetic field is produced by the objects or geological structures
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2209/00—Characteristics of used materials
    • A63B2209/08—Characteristics of used materials magnetic
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2220/00—Measuring of physical parameters relating to sporting activity
    • A63B2220/80—Special sensors, transducers or devices therefor
    • A63B2220/83—Special sensors, transducers or devices therefor characterised by the position of the sensor
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2220/00—Measuring of physical parameters relating to sporting activity
    • A63B2220/80—Special sensors, transducers or devices therefor
    • A63B2220/89—Field sensors, e.g. radar systems
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2225/00—Miscellaneous features of sport apparatus, devices or equipment
    • A63B2225/50—Wireless data transmission, e.g. by radio transmitters or telemetry
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2243/00—Specific ball sports not provided for in A63B2102/00 - A63B2102/38
    • A63B2243/0025—Football

Definitions

  • the present invention relates to a position detecting system, and more particularly, to detecting a position of a mobile object in a moving area with respect to an area in the moving area.
  • Any sport in which the goal of the game is to place a ball in a certain position with respect to a surface has more or less complicated rules as to when a ball crossed a line or was in a goal or not.
  • a ball or a mobile object moves relatively quickly, for example in football, handball, football, ice hockey, etc. is usually trusted on a referee who decides together with other referees, such as the linesmen, whether a goal has happened or not.
  • Such a decision is then not difficult if the ball remains in the goal, that is in the net, which clearly indicates a goal.
  • the ball bounces just behind the goal line in the goal and then jumps out of the goal it is not easy to tell if it was a goal.
  • certain sports allow a game interruption and it is determined by a high-speed camera evaluation, whether the ball has exceeded the line or not.
  • football for example, it is required that the ball Turn, ie with a total diameter has exceeded the goal line, so that a goal is scored.
  • Such optical evaluations using high-speed cameras are expensive, technically complex and require time for evaluation. Furthermore, it still needs a referee who looks at a television picture and then uses the television picture to decide. whether a goal has taken place or not.
  • the high-speed cameras thus do not provide a technically generated suggestion as to whether or not a goal has taken place, which can be taken over by a referee, or which can be used by an arbitrator, at least as an aid to his own decision.
  • optical evaluation systems can provide a relatively safe goal decision.
  • they have not yet reached a large extent, which is not least because they are expensive to purchase, lead to longer game interruptions and thus can cause an actually exciting game is torn by continuous evaluation breaks artificially, which ultimately neither the Players nor the clubs nor the spectators is served.
  • the object of the present invention is to provide an improved concept for position detection.
  • the present invention is based on the recognition that a simple, yet safe and accurate measurement in operation is to rely on magnetic fields. that players and other expected items on the field are relatively unaffected.
  • a set of at least two magnetic field generating objects are used, which are arranged on or in the ground in the vicinity of a surface with respect to which the position of the mobile object is to be determined. Specifically, a first elongated magnetic field generating object vcfrom a line of intersection of the surface with the ground is placed on or in the ground, and a second elongated electrically conductive magnetic field generating object is spaced from the cutting line from the second side of the cutting line in or on the Arranged underground.
  • Both magnetic generating objects since they are in the case of a simple conductor z.
  • B. capture only the outgoing conductor, a magnetic field that decreases radially.
  • the decrease characteristic of the magnetic field of a straight conductor is known and is proportional to l / r, where r is the distance from the conductor.
  • the position of the mobile object can be concluded solely on the basis of a comparison of the magnetic fields which are caused by the two conductors in a multiplex operation . If the magnetic field due to the conductor in front of the surface is greater than the magnetic field due to the conductor behind the surface, then it can be said that the mobile object lies in front of the surface or was at the time of measurement, whereas if the magnetic field is due to the magnetic field Head behind the surface is greater than the magnetic field due to the conductor in front of the surface, it can be said that the mobile object was located behind the surface at the time of measurement.
  • At least one other magnetic field generating object is also arranged, for example, in the form of a straight conductor, which is arranged at an acute angle or preferably perpendicular to the other two magnetic field generating objects.
  • This third magnetic field generating object is also excited in the multiplex mode and provides alone, via a threshold comparison, an indication of whether the object is inside or outside the boundary of the surface.
  • the area is also bounded upwards, as is the case with football, or limited downwards, it is preferred to make a threshold comparison for this purpose, in that if one of the potentially four magnetic fields or a subgroup of the four magnetic fields is smaller than a threshold is obtained, the result is that the ball was above the goal and was not in the goal. If, on the other hand, the value measured by a magnetic field is greater than a threshold, then it can be assumed that the ball has been located closer to the ground and thus has been below the bar.
  • Fig.l is a schematic representation of a first embodiment
  • Fig. 2 is a more detailed illustration of the arrangement of the magnetic field generating objects with respect to a gate; 3 shows a more detailed illustration to clarify the position of the line of rotation to the goal line and to the front and to the rear ladder;
  • FIG. 4 shows a time diagram for illustrating a time multiplex excitation of four magnetic field generating objects
  • FIG. 5a is a schematic illustration of various logical operations for determining certain positions with respect to an area in the movement area
  • 5b is a schematic representation of the evaluation device
  • FIG. 6 shows a representation of the magnetic field conditions in macroscopic dimensions with respect to a football goal with a goal width of 7.44 m;
  • FIG. 7 shows a schematic illustration of the magnetic field situations of two magnetic field generating objects with respect to the surface
  • 10a shows a schematic representation of the longitudinal field of a counter-wound long coil, in which the rotary field is compensated;
  • 10b is an enlarged view of a portion of the coil of Fig. 10a;
  • FIG. 11 is a schematic representation of the mobile object using the example of a ball
  • FIG. 12a shows a plan view of a movement range with neutral range, switch-off range, initial switch-on range
  • FIG. 12 shows a schematic representation of the possible state transitions, as they are used by the evaluation device in order to carry out a plausibility check, or to generally activate or deactivate a door signaling.
  • Fig.l shows a range of motion, such as a goal area of a soccer field 10, for a mobile object, such as a football 11, which is shown in Fig.l far away from the penalty area, so not yet in the range of motion in which is measured is arranged.
  • the area in the range of motion is, for example, a surface spanned by a gate whose goal post is shown at 12 or, more specifically, a surface which is parallel to the surface defined by the gate but offset by half a ball diameter towards the rear, when a goal is defined as a ball that has completely penetrated the area spanned by the goal, or has penetrated exactly halfway through the area spanned behind the goal.
  • the range of motion has a background, such as the football pitch in the penalty area, where the surface in question cuts the ground, ie, it is not parallel to the ground, but is preferably so. even arranged perpendicular to the ground.
  • a background such as the football pitch in the penalty area
  • the surface in question cuts the ground, ie, it is not parallel to the ground, but is preferably so. even arranged perpendicular to the ground.
  • the surfaces is not necessarily 100% perpendicular to the ground, but in a predetermined tolerance range perpendicular to the ground, this tolerance range depending on the implementation plus or minus 5 ° from the vertical or maybe plus or minus fl ⁇ ° from the vertical, depending on the size of the gate.
  • a first elongate conductive magnetic field generating object 14 is provided, which is arranged at a first distance di (FIG. 2) from the cutting line on a first side of the cutting line in or on the substrate.
  • a second elongate electrically conductive magnetic field generating object 15 is arranged, which is arranged at a second distance d 2 ( Figure 2 ) from the cutting line on a second side of the cutting line in or on the ground.
  • the two magnetic generating objects 14, 15 may be buried in the ground, so for example run below the football lawn, or rest on the lawn, depending on which alternative is safe.
  • first and second magnetic field generating articles 14, 15 are formed to generate a magnetic field detachable radially with increasing distance with respect to the magnetic field generating object.
  • a generator 16 is provided, which is designed to drive the two magnet-generating objects with an alternating current and in a multiplex operation.
  • the alternating current amplitude is plotted in FIG. 1 for both conductors at Ii, I 2 .
  • an AC or DC current is used.
  • the directions of the current amplitudes Ii, l2 are arbitrary, which is clear in the case of an alternating current anyway. In the case of a direct current, however, the directions are also arbitrary if this merely changes the direction of the magnetic field. However, it is preferable to use a non-directional magnetic field sensor in the ball 11 so that a direction of a magnetic field and thus a current direction of the current generated by the generator 16 is insignificant.
  • the multiplexing operation in which the generator 16 is operated may be a time multiplex, a frequency multiplex, a code multiplex or a combination of different types of multiplexing, such as a combined time and frequency multiplexing.
  • the generator as shown in Figure 8, provide an alternating current with a frequency which is between 500 and 10,000 Hz and preferably between 2500 and 3500 Hz. Further, the generator provides a voltage of about 100 to 1000 volts, which may be at about 400 to 600 volts in particular.
  • the current consumption of the conductor depends on various factors, in particular on the length of the conductor and is set to a value between 0.05 and 10 A depending on the implementation and door size, with values in the range of 0.5 to 1.5 A for many applications preferred become.
  • the switching frequency of the time-multiplexing operation is between 10 and 5000 Hz, but it is generally preferred that the multiplexing switching frequency fm «is less than or equal to half the alternating current frequency f AC , as indicated in FIG.
  • FIG. Fig.7 shows ift a section perpendicular to the gate the situation for two positions.
  • the first position A is not a goal, since the goal surface 19 lies to the right with respect to the position A.
  • the distance of the two conductors 14,15 from the section line 20 of the surface 19 with the substrate 21 is equidistant from both conductors. In the example shown in FIG. 7, therefore, the two distances di and d 2 are the same.
  • the magnetic field measured by a ball at the position A originating from the conductor 14 will be greater than the magnetic field originating from the conductor 15, since the position A is the distance Al is away from the conductor 14, this distance Al being smaller than the distance A2. Therefore, for example, signaling is output that there is no gate. This signaling is preferably performed solely on the basis of the comparison of the values Bl and B2, so that no absolute value measurements that would have to be calibrated are needed.
  • the distances di and d 2 of the two conductors may not necessarily be the same. However, for a simple comparison to work, the magnetic field should be exactly the same on the surface of both conductors be. In order to achieve this at non-equal intervals, a feed with two different current amplitudes can be made alternatively to the feeding of an identical current amplitude in the conductor. For example, if the distance d 2 is smaller than the distance di, the conductor 14 would have to be operated at a larger current amplitude to compensate for its "gap deficit.” Therefore, in one embodiment, the value of the current amplitude is used for calibration purposes.
  • this calibration can be dispensed with, and yet a simple comparison can be made, due to the fact that the characteristic of the magnetic field is known, that is, the magnetic field according to l / r decreases, even if only because of the knowledge of the two distances di, d 2, even if the distances are not equal and, for example, the same or any known amplitudes are passed through the conductors, a calculation could be made in the sense of a triangulation determination to determine if the position to be examined is in front of or behind the F 19 is located. However, it is preferred to take the same amplitudes, the same distances and only a comparison in order to be able to signal a state in front of or behind the gate.
  • FIG. 2 shows an enlarged detail of the situation in FIG. 1, wherein two further magnetizing objects 30, 40 are arranged in FIG. 2 whose functionality is analogous to the functionality of the magnetic generating objects 14, 15, but the arrangement is now perpendicular within one To the tolerance range of, for example, ⁇ 10 ° takes place.
  • a single third magnetic generating conductor arrangement in the middle between the two goal posts is sufficient, in which case a threshold comparison is sufficient to determine whether the magnetic field due to the third conductor 30 has dropped more than one threshold. If this is found, then the ball is outside the goalpost, so too far away from the centrally located conductor 3, as that a gate has taken place, while when the magnetic field due to the conductor 3 is greater than the threshold of one Gate is spoken.
  • the two conductors 30 in FIG. 2 may not be present, and only the two conductors 40 are present. Then again, it would be determined by a threshold comparison that the magnetic field is small enough that the ball is inside the goalpost.
  • the threshold is not a maximum threshold, but a minimum threshold.
  • a football goal also has an upper limit, which is indicated at 41 in FIG. 7 and is provided by the crossbar.
  • a threshold value comparison is made, namely a maximum threshold. If the magnetic field due to the conductor 14, 15 or, if other conductors are present, due to the conductor 30 or 40, for example, greater than the threshold corresponding to the crossbar position 41, it is assumed that the ball was in the gate while when a magnetic field is smaller than the threshold, it is assumed that the ball was above the upper limit 41.
  • both magnetic fields due to the first or the second conductor 14, 15 can be used. Alternatively, a single magnetic field would suffice.
  • the additional magnetic fields can also be used, for example in the form of a weighted averaging, a majority decision, etc.
  • the detection of whether a ball was above or below the crossbar is relatively unproblematic since, if it was below the crossbar and took a "normal" course, it remains in the net Crossbar was, so he will not land on the net and remain behind the goal, but if the ball in the sense of a "Wembley" -Tors, which makes the detection high demands, jumps, the detection in the vertical direction is unproblematic, and the main task is the relative comparison of the first and second conductors, which works with maximum accuracy and without threshold.
  • the upper threshold can therefore be readily used since this dimension is the least critical dimension of all the dimensions to be monitored.
  • FIG. 3 shows an even more detailed illustration of the situation in soccer, the football rule being that a ball must have crossed the goal line 35 with its total rotation. There is therefore a rotation line 36 which runs parallel to the goal line 35 and is spaced from the goal line by the radius of the ball.
  • the magnetic field sensor is arranged in the center of the ball, that is to say in the center of gravity of the ball, as shown at 9 in FIG. 3.
  • FIG. 11 A schematic representation of the ball 11 is shown in FIG. 11, it being assumed that a processor 8 is arranged in the center of the ball, this processor also preferably comprising the direction-independent magnitude magnetic field sensor 9 exactly in its center, and wherein the detection data are transmitted via an antenna 7 to a remote detection / evaluation unit, the example is arranged in the goal area area.
  • a processor 8 is arranged in the center of the ball, this processor also preferably comprising the direction-independent magnitude magnetic field sensor 9 exactly in its center, and wherein the detection data are transmitted via an antenna 7 to a remote detection / evaluation unit, the example is arranged in the goal area area.
  • Such an evaluation device 6 is shown in FIG. 1, this evaluation device preferably communicating wirelessly with the ball via an antenna 5 or receiving magnetic field measurements wirelessly from the ball.
  • FIGS. 1 A schematic representation of the ball 11 is shown in FIG. 11, it being assumed that a processor 8 is arranged in the center of the ball, this processor also preferably comprising the direction-independent magnitude magnetic field sensor 9 exactly
  • the ball can perform the complete number of comparator operations to provide a goal decision itself, for example via a radio signal , an infrared signal, an acoustic and / or optical signal, for example by means of an LED, which is visible on the ball itself, and which is e.g. to light up when a goal has been scored.
  • the ball 11 transmits magnetic field measurements, and that the entire evaluation in the evaluation device 6, which is located externally with respect to the ball takes place.
  • the evaluator could then send its information to, for example, a digital clock or other small indicator to the referee (s) along with a vibrating alarm or audible alarm to inform the referee that the ball indicates a goal to be dependent whistle or take this hint at least as an aid to decision.
  • Fig. 4 shows a time sequence as may be performed by the generator 16 to time serially actuate the four conductors 14, 15, 30, 40 in a second multiplexing operation.
  • the ball would then at the times ti, t2, t3, t4 measure the just current magnetic field and would, if correct synchronization has been done, know what comes reading of which ladder.
  • the ball could simply send a sequence and the evaluation device 6 would then be able to perform a further assignment due to the sequence of the sequence as generated by the generator and the order of received data.
  • a wired or wireless connection between the evaluation device 6 and the generator 16 would e- xistieren.
  • alternator 16 may alternatively operate in frequency division, code division, or a combination multiplexing mode, for example in a combined time / frequency multiplex.
  • frequency multiplexing each conductor would have its own frequency associated with it, so that generator 16 generates four different frequencies, eg, different by 200 Hz so that it can be conveniently filtered.
  • each conductor In the demultiplex, each conductor would have its own code sequence which is orthogonal to the other code sequences, so that interference-free operation can be achieved, which, however, when very fast ball movements are to be expected, one are waiting, a relatively high switching frequency and thus can cause a relatively high magnetic field frequency.
  • a straight conductor 14, 15 is used for magnetic field generation
  • the return conductor 140, 150 is placed too close to the outgoing conductor 14, 15, a magnetic field knnnation take place, so that no sensor signal is left.
  • the return conductor 140 and the return conductor 150 is arranged relatively far away from the two Hinleitern.
  • the aim is to achieve such a distance that, in the region of interest, that is to say in the area or vicinity of the area in the movement region, a field generated due to the return conductor is less than 10% and preferably less than 1% of the field, which is generated in the area of the movement range of the Hinleiter 14 and 15 respectively.
  • the generator 16 is an alternator with the required data and is connected to the grid. Under certain circumstances, a galvanic decoupling can take place, for example, for a transformer so that no network problems are generated or carried into the measurement.
  • FIG. 5a shows a schematic representation of the functionalities that must be performed by the evaluation device 6, which is shown in FIG. 1, and which is shown in more detail in FIG. 5b.
  • a first comparator function 60 is performed to compare the magnetic field value due to the first conductor 14 (Bl) with the magnetic field measured value due to the second conductor 15 (B2). If Bl is greater than B2, then the ball is in the penalty area so certainly before the goal line / while the ball is then when Bl is less than B2, the ball is behind the U-turn 36. However, whether or not the ball is in the goal is determined by the comparison made by the comparator 61.
  • the magnetic field values due to the conductors 30, 40 that is, B3, B4 are compared with each other, and then, if B3 is larger than B4, it is determined that the ball is between the posts, whereas if B3 is smaller than B4, then Ball is located outside the post.
  • the ball is far behind the goal, while if only B2, but no Bl is measured, the ball is relatively far away from the sensor, e.g. near the 11-meter point or even at the edge of the penalty area.
  • a gate is recognized when Bl is smaller than B2, when B3 is larger than B4, and when Bl or B2 or B3 or B4 or a majority vote from Bl to B4 or an average value is larger than a Schwe Vlle.
  • a gate is signalized.
  • the functionalities of the device 60, 61, 62 take place in the computer unit 65 in the exemplary embodiment shown in FIG. 5B for the evaluation device.
  • a post-correction device 66 which in one implementation is coupled to a memory 67, wherein the memory 67 stores either the last measured state or an earlier measured state or several such earlier states.
  • the functionality of the post-correction device 66 or a general plausibility check 60 also described independently of the reference to the preceding figures due to an earlier state and due to a prior knowledge of typical and untypical or unauthorized state changes Magnetic field generating method can be used. Even if a position is detected without magnetic fields, for example, due to wireless triangulation or optical methods, the prior knowledge of permitted or unauthorized lanes can also be used there to perform a plausibility check.
  • FIGS. 12a and 12b For a plausibility check, reference is made to FIGS. 12a and 12b. Again the situation of a football However, three areas are now shown in principle, namely a neutral area 120, a switch-off area 121 and a switch-on area 122.
  • the neutral area 120 has two areas, namely a region 120a in front of the gate, which optionally adjoins the switch-on area 122 and a neutral area between the start-up area and the goal line and a neutral area behind the goal line. Further, attention is drawn to the switch-on areas extending from the posts 12a, 12b into the gate-off.
  • ranges may vary depending on the port, implementation, magnetic conductor positioning, etc., and may also vary, especially if other than magnetic detection methods are used. In general, however, it will be possible everywhere signal a turn-off area that "crosses" an unauthorized ball track, so that a ball, when on such a track, will not trigger any door signaling despite the fact that it meets all "other" criteria.
  • the post-correction device .66 shown in FIG. 5b is therefore based on the table shown in FIG. may be stored as a look-up table, compare the currently determined state provided by the device 65 with the previous state to find a corresponding row of the table in Fig. 12b to disable or not affect a goal indication , So that the memory 67 is updated, z.
  • the post-correction device or the evaluation logic 65 determines the most recently detected state, or e.g. the state determined a certain time ago, as shown by the solid or dashed return line 68 and 69, respectively.
  • Fig. 6 shows a schematic representation of a field of a long conductor. It has been found that a conductor, e.g. a length of 25 m, as is preferred for a gate with a width of 7.44 m, has a sufficiently large plateau in the middle of the magnetic field, in which the same magnetic field results at the same distance from the gate. At the beginning and end of the conductor, however, the magnetic field decreases sharply. Thus, the magnetic field at the beginning of the conductor and at the end of the conductor has a value of only about 50% compared to the magnetic field value at the plateau 82. It has also been found that the magnetic field is still from the beginning of the conductor to the left or from the end of the conductor extends to the right, although there is no ladder left. The field has a 1 / r characteristic.
  • the width of the gate affects the length of the conductor, since the plateau becomes wider the longer the conductor becomes.
  • it is preferred to use a ladder length of at least 10 meters, and more preferably at least more than 20 meters, with a soccer goal having typical dimensions of at least 22 to 30 meters and more preferred, the quality of the plateau In other words, how close the plateau is to an ideal horizontal iso-B line is affected by the length of the conductor.
  • FIG. 8 shows an alternative implementation of the magnetic field generating objects 15, 16. While in FIG. 1 the return conductors are arranged far away from the region to be evaluated, in the embodiment shown in FIG. 8 the return conductors 150, 140 are moved around the playing field pulled the second goal area, there also with the same ladders to perform a gate monitoring. The same also applies to the vertically arranged conductors 30, 40, which can likewise extend from the upper region in FIG. 8 to the lower region in FIG. 8 and thus can be used for the evaluation of both gate regions. This saves resources and due to the large dimensions of a soccer field, a secure decoupling is given, to the effect that the first goal area does not disturb the second goal area.
  • FIG. 10a illustrates a further implementation of a fe magnetic field generating object in the form of a counter wound long coil 100, which is arranged as the first magnetic field generating object and / or a second magnetic field generating object, that is in the substrate before and / behind the goal 102nd Due to the fact that the coil is wound in opposite directions, a rotatory field, indicated at 104, is compensated and non-existent, while the coil as a whole develops a now longitudinal field 106 which also has an absolute decay characteristic proportional to 1 / r or has a characteristic which, depending on the implementation, is not exactly proportional l / r, but which decreases from inside to outside or from bottom to top.
  • Fig. 10b shows a specific schematic of such a counter-wound coil that is designed to compensate for the rotatory field while the longitudinal field exists.
  • the magneto-generational objects are, in general terms, straight conductors, in particular only the outgoing conductors, as shown in FIG. If there are two ranges of motion, then the return conductors may also be used as magnetic generation articles, as shown in FIG.
  • the diameter of the turn in the embodiments of Fig.l and Fig.8 is substantially larger than the area in the range of motion, with respect to which the position of the mobile object is to be detected.
  • the size ratio of the area to be monitored by the magnetic field generating objects is approximately such that the area of the conductor loop in the case of FIGs. 1 and 8 is about at least 5 times, and preferably still greater, a multiple of the door area.
  • the return conductor can be arranged close to the forward conductor, and the area of the conductor loop formed thereby is very small.
  • this is unprob- lematic in terms of magnetic effectiveness, since the return conductor is shielded and thus does not compensate for the magnetic field of the forward conductor.
  • a coil In the case of using the counter-wound long coil, a coil is used whose diameter is relatively small, for example less than 50 cm and preferably less than 10 cm.
  • the cross-sectional area of the coil in the transverse direction, ie perpendicular to the direction of extension of the coil, ie with respect to FIG. 10 a, the cross-section in the xz-direction is much smaller than the area to be examined, for example less than 1/50 or even smaller.
  • the length of the coil in the direction of extent that is to say in the y direction in FIG. 10a, is at least twice as large and preferably even greater than the length of the surface with respect to which the position of the mobile object can be determined.
  • the length of the coil is larger by at least a factor of 20 compared to the coil cross section in the xz direction, and is preferably even greater.
  • the method according to the invention can be implemented in hardware or in software.
  • the implementation may be on a digital storage medium, in particular a floppy disk or CD with electronically readable control signals, which may interact with a programmable computer system such that the method is performed.
  • the invention thus also consists in a computer program product with a program code stored on a machine-readable carrier for carrying out the method according to the invention, when the computer program product runs on a computer.
  • the invention can thus be realized as a computer program with a program code for carrying out the method when the computer program runs on a computer.

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  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

Pour déterminer une position d'un objet mobile par rapport à une surface dans une zone de déplacement, la zone de déplacement présentant un sol et la surface coupant ce sol le long d'une ligne de coupe, un champ magnétique d'un premier objet de forme allongée produisant un champ magnétique, qui est placé à une première distance de la ligne de coupe, est mesuré et un champ magnétique issu d'un second objet de forme allongée produisant un champ magnétique, qui est placé à une seconde distance d'un autre côté de la ligne de coupe dans ou sur le sol, est mesuré. Les champs magnétiques mesurés sont comparés, ce qui permet de déterminer si l'objet mobile se trouve devant ou derrière la surface. Un générateur est prévu pour distinguer quel champ magnétique provient de quel objet, lequel générateur commande en mode multiplex les objets produisant un champ magnétique. Les objets produisant un champ magnétique peuvent comporter des conducteurs aller d'une boucle conductrice ou des bobines enroulées de façon opposée ou des combinaisons de conducteurs aller/retour constituées d'un conducteur retour à blindage magnétique.
EP08734703A 2007-03-30 2008-03-20 Zone de déplacement pour un objet mobile et dispositif d'évaluation permettant de déterminer une position d'un objet mobile Withdrawn EP2136887A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007015493A DE102007015493A1 (de) 2007-03-30 2007-03-30 Bewegungsbereich für einen mobilen Gegenstand und Auswertungsvorrichtung zum Feststellen einer Position eines mobilen Gegenstands
PCT/EP2008/002270 WO2008119479A1 (fr) 2007-03-30 2008-03-20 Zone de déplacement pour un objet mobile et dispositif d'évaluation permettant de déterminer une position d'un objet mobile

Publications (1)

Publication Number Publication Date
EP2136887A1 true EP2136887A1 (fr) 2009-12-30

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Country Link
US (1) US20100181996A1 (fr)
EP (1) EP2136887A1 (fr)
DE (1) DE102007015493A1 (fr)
WO (1) WO2008119479A1 (fr)

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DE102007015493A1 (de) 2008-10-02
WO2008119479A1 (fr) 2008-10-09
US20100181996A1 (en) 2010-07-22

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