EP2183036B1 - Apparatus and method for monitoring golf club hitting accuracy - Google Patents
Apparatus and method for monitoring golf club hitting accuracy Download PDFInfo
- Publication number
- EP2183036B1 EP2183036B1 EP07802063.3A EP07802063A EP2183036B1 EP 2183036 B1 EP2183036 B1 EP 2183036B1 EP 07802063 A EP07802063 A EP 07802063A EP 2183036 B1 EP2183036 B1 EP 2183036B1
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- EP
- European Patent Office
- Prior art keywords
- sensor
- impact
- measuring
- plate
- golf club
- 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.)
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Classifications
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B69/00—Training appliances or apparatus for special sports
- A63B69/36—Training appliances or apparatus for special sports for golf
- A63B69/3623—Training appliances or apparatus for special sports for golf for driving
- A63B69/3632—Clubs or attachments on clubs, e.g. for measuring, aligning
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B69/00—Training appliances or apparatus for special sports
- A63B69/36—Training appliances or apparatus for special sports for golf
- A63B69/3617—Striking surfaces with impact indicating means, e.g. markers
- A63B69/362—Striking surfaces with impact indicating means, e.g. markers electrical or electronic
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B24/00—Electric or electronic controls for exercising apparatus of preceding groups; Controlling or monitoring of exercises, sportive games, training or athletic performances
- A63B24/0003—Analysing the course of a movement or motion sequences during an exercise or trainings sequence, e.g. swing for golf or tennis
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B24/00—Electric or electronic controls for exercising apparatus of preceding groups; Controlling or monitoring of exercises, sportive games, training or athletic performances
- A63B24/0021—Tracking a path or terminating locations
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
- A63B60/42—Devices for measuring, verifying, correcting or customising the inherent characteristics of golf clubs, bats, rackets or the like, e.g. measuring the maximum torque a batting shaft can withstand
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- 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
- A63B71/0619—Displays, user interfaces and indicating devices, specially adapted for sport equipment, e.g. display mounted on treadmills
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- 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
- A63B2220/10—Positions
- A63B2220/13—Relative positions
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- 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
- A63B2220/10—Positions
- A63B2220/16—Angular positions
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- 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
- A63B2220/30—Speed
- A63B2220/34—Angular speed
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- 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
- A63B2220/62—Time or time measurement used for time reference, time stamp, master time or clock signal
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- 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
- A63B2220/801—Contact switches
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- 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
- A63B2220/833—Sensors arranged on the exercise apparatus or sports implement
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- 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
Definitions
- the invention relates to a device and a method for controlling the accuracy with which a golf club hits a golf ball with the club face of its club head.
- This device for controlling the accuracy with which a golf club hits a golf ball with the face of its golf club head.
- This device comprises a plate-shaped sensor, which consists of two electrically conductive layers, which are spaced by an intermediate layer consisting of a flexible, under pressure conductive material. At the moment of a relatively large impact of a golf ball on the striking surface, the two conductive layers are electrically connected in the area of the impact by the intermediate layer, but never directly in contact with each other.
- the invention is therefore an object of the invention to provide a device of the type mentioned above, which can be attached to a conventional golf club, without changing its properties significantly, no disturbing side activity during playing only requires for measuring purposes, the impact of the golf ball more than registered so far and the recorded and according to the program evaluated measurement results in a form that they are always at hand.
- the plate-shaped sensor is so light and thin that it is virtually imperceptible when a strike is made. As a result of the attachment to the golf club's face, not on its back, every point of impact is registered very precisely.
- the preferably attachable to the shaft of the golf club measurement and calculation circuit increases its weight only minimally, because they need only perform the necessary functions to control the measurement process and to determine the coordinates of the impact point and spark the measurement results, for example, to a cell phone or smartphone. There they can be stored and evaluated by means of suitable programs. A cell phone, smartphone or the like with a radio module is usually available anyway and is regularly taken to the golf course. Suitable programs for the evaluation of the measurement results can be made available over the internet for download on the phone or smartphone.
- the plate-shaped sensor is constructed in the manner of a computer touchpad with a rectangular support plate with a first electrically conductive layer applied on its front side, which is connected along two opposite edge regions each with a printed conductor connected to a signal line, and one in front of the carrier plate arranged, flexible protective plate having a deposited on its back, the second electrically conductive layer, which is connected along two opposite edge regions in each case connected to a signal line, a printed conductor extending transversely to the interconnected with the first conductive layer interconnects, wherein the conductive layers are separated by elastic spacers, the restoring force is chosen so that it comes only temporarily when a blow to a golf ball at the point of impact to the contact between the conductive layers.
- Such a touchpad is for example in the US Pat. No. 6,239,790 B1 described herewith to describe the operation of the above-identified sensor for the sake of simplicity.
- a computer touchpad for example, on a laptop, properly mounted insoluble in the case of the computer and only relatively light and slow touched with the finger.
- the sensor of the measuring device according to the invention is mechanically much more heavily loaded by the blows against a hard golf ball.
- different requirements apply to the sensor because, in contrast to a computer touchpad, it should be easily detachable from the supporting surface.
- the advantage is achieved that it and with it the plate-shaped sensor becomes more flexible, so that when it is fastened with a double-sided adhesive film on the clubface of the golf club, it can be detached more easily.
- the support plate of the touchpad on its back or bottom is provided with tracks and carries electronic components.
- the sensor electronics are located in the housing, preferably mounted on the shaft of the golf club, of the measuring and calculating circuit.
- the thinner support plate and the displacement of the sensor electronics to the club shaft has the further advantageous consequence that the entire plate-shaped sensor need only have a thickness of about 1 to 2 mm and thus the clubface of the golf club is only minimally advanced.
- the sensor of the new device is more exposed to changing temperature and humidity than a computer touchpad. Therefore, it is expedient that the protective plate in the edge region materially connected firmly and tightly connected to the carrier plate except for a ventilation opening, z. B. is glued.
- the ventilation opening can be covered with a waterproof, but gas-permeable film or by an overlap, such. As in a labyrinth seal, be sealed so that the sensor is at least dust and splash-proof to IP54.
- the sensory-active area of the sensor only needs to be about 45 to 55 mm wide and about 16 to 20 mm for putter, and 20-30 mm for rackets for pitching and chipping.
- the sweet spot is preferably in the middle.
- the signal lines between the sensor and the measuring and computing circuit have a separable connector.
- one connector half is fixedly attached to the housing of the measuring or arithmetic circuit or fixed to the carrier plate, while the other half connector is located at the free end of a cable.
- this housing On the shaft of the golf club a variety of design variants are available. It may already be sufficient to fix the housing frictionally by means of at least one clamp or a tension band on the shaft, wherein a rubber-like contact surface or intermediate layer is advantageous.
- a golf club is shown, the club head with 10, 12 with shank and handle 14 are designated.
- a sensor 18 explained in more detail below is fixed, whose active sensitive area is designated 20.
- the directions of the coordinates x, y and z used below are also entered. Their common starting point is in Sweet Spot 22 of the clubface 16.
- the sensor 18 is connected via a plug connection 24 and to a cable 26 combined signal lines with a mounted in a protective housing 28, generally designated 30 sensor electronics with a measuring and arithmetic circuit, which is mounted by means of an easily detachable fastening mechanism 32 on the shaft 12 and a radio module 34, preferably Bluetooth, with a mobile evaluation device 36 in the manner of a mobile phone, smartphone or PDA is in communication, whose corresponding radio module with 38, flat screen with 40 and keyboard with 42 are designated.
- a mobile evaluation device 36 in the manner of a mobile phone, smartphone or PDA is in communication, whose corresponding radio module with 38, flat screen with 40 and keyboard with 42 are designated.
- an evaluation device 36 a laptop in question.
- the evaluation unit 36 are determined by the measuring and calculating circuit 30, referred to the sweet point 22 y and z-coordinates of the point of 18 registered by the sensor 18 impingement point of a golf ball together with the coordinates of the impact points of other ball strokes programmatically evaluated and graphed.
- the sensor 18 has the in Fig. 2 shown construction. It consists of a by means of a double-sided adhesive sheet 46 fastened to the striking surface 16 support plate 48 and a outside of this arranged protective plate 50.
- the support plate 48 may for example consist of glass fiber reinforced epoxy resin (preferably FR4 or FR5).
- the protective plate 50 may be made of plastic (preferably polyester).
- both sides adhesive film 46 come under the brand names Tesa, Herma or Scotch commercially available films in question, preferably the adhesive force on the side connected to the support plate 48 side of the adhesive film is slightly larger than on the side to be joined with the impact surface 16.
- the carrier plate 48 and the protective plate 50 are each provided with an electrically conductive layer 52 and 54, respectively.
- These may be semiconductor layers according to US Pat. No. 6,239,790 B1 act that have a certain linear electrical resistance.
- spacers 56 are arranged in sufficient size and distribution, which ensure that the conductive layers 52, 54 only come into mutual contact when the flexible protective plate 50 regional or punctual, such as In a blow to a golf ball, a sufficient pressure is applied.
- the protective plate 50 is firmly bonded in the edge region with the support plate 48, but at least one not shown ventilation and venting remains free, the manner of a Labyrinth seal is designed so that the sensor 18 is dustproof and splash-proof to IP54.
- the support plate 48 is provided on its inside with two other printed conductors extending longitudinally opposite edge regions at right angles to the first-mentioned interconnects and contact in the assembled state over its length, the electrically conductive layer 54 on the protective plate 50.
- the tracks electrically connected to the conductive layer 54 could also be printed on the guard plate 50.
- Each of the 4 tracks is connected to the measurement and calculation circuit 30 via a signal line continuing in the cable 26.
- the flexible protective plate 50 is pressed in a position so far that the conductive layer 54 contacts the other conductive layer 52 on the support plate 48, after applying a certain reference voltage to the conductor tracks connected to one of the two layers between the In each case, a voltage is measured which is proportional to a change in the distances of the impingement point from the interconnects connected to the reference voltage, so that the y and z coordinates can also be determined after a calibration.
- the distances of a pinch point from the perpendicularly aligned tracks are calculated based on the amount of time that the current takes to travel to certain tracks connected to the tracks Charge capacitors.
- a longer path of the current through one of the conductive layers is tantamount to a greater resistance, ie a lower current intensity and thus a longer period of time for charging the capacitor in question.
- the in Fig. 3 shown substitute circuit diagram, wherein denoted by Yl and Yr on the left and right edges, for example, the conductive layer 52 traces, with Zo and Zu at the top and bottom of the conductive layer 54 arranged tracks, with Ryl, Ryr, Rzo and R to the respective tracks associated fixed resistors and Rya and Ryb, and Rza and Rzb, the resistors in the k ⁇ region of the conductive layer 52 and the layer 54 are respectively designated between the impact point and the four interconnects.
- the resistance between a trace of the layer 52 and a trace of the layer 54 is infinite because of the spacers 56. Occurs selectively strong enough pressure on the protective plate 50, the two layers 52, 54 form the in Fig. 3 shown resistor network.
- a defined reference voltage V Ref is applied alternately between Y1 and Yr during the pressure and at the same time the voltage drop is measured with high resistance at one end of the other layer.
- the ratio between voltage and distance can be determined and thus calibrate the sensor so that from the voltage values a conversion of the position in mm, relative to the set on the sweet spot zero point 22 of the coordinate system, is possible.
- the measurements are carried out continuously with a suitable sampling frequency of 1 kHz to 4 kHz, preferably 2 kHz, in order to be able to reliably determine the position of a point of impact during the pressure duration in both coordinate directions.
- a suitable sampling frequency of 1 kHz to 4 kHz, preferably 2 kHz, in order to be able to reliably determine the position of a point of impact during the pressure duration in both coordinate directions.
- the time of impact of the golf ball and the pressure duration can be determined by the fact that valid measurements can be distinguished from 0 volts by the constant end resistors Ryl, Ryr, Rzo and Rzu.
- the voltages that can be measured when the pressure is triggered lie between for the z axis Vref x Rzo + Rza + rzb / Rzo + Rza + rzb + Rzu volt and Vref x Rzu / Rzo + Rza + rzb + Rzu volt and for the y-axis between Vref x Ryl + Rya + ryb / Ryl + Rya + ryb + Ryr volt and Vref x Ryr / Ryl + Rya + ryb + Ryr volt ,
- the sampling takes place with 8bit to 12bit, preferably with 10bit.
- Fig. 4 the essential parts of the measurement and calculation circuit 30 are shown. They are mounted in the housing 28 on a circuit board 60 and interconnected in the usual way.
- the microcomputer 62 controls the application of the reference voltage to the signal lines connected to the electrically conductive layers 52, 54, registers the voltages and associated times measured during the measurement processes, and calculates the coordinates of the points of impact. These are buffered and forwarded via the radio module 34 with an antenna, preferably a ceramic antenna 35, to the evaluation device 36.
- the power supply is a battery 64, the charge controller is shown at 66.
- the charging takes place via a socket 68, preferably a mini-B type USB socket or a 2.5 mm jack socket. About this socket and the microcomputer 62 can be reprogrammed.
- a quick-release mechanism for releasably attaching the housing 28 of the measuring and calculating circuit 30 is shown on the shaft 12 of the golf club, preferably according to Fig. 1 on the club head 10 or on the striking surface 16 opposite side of the shaft 12.
- the housing 28 is grooved on the side adjacent to the shaft 12 with a diameter slightly larger than the shaft diameter sized.
- a rubber insert 70 is used, which can also be glued to the housing 28 and can help to make the housing dustproof and splash-proof to IP54.
- the connection of the housing with the shaft 12 by means of a flexible plastic strap or a strap 72, z.
- a textile tape which can be rubberized on the inside.
- tension band 72 is fixed to a fixedly connected to the housing 28 deflection pin 74.
- deflection pin 74 On the opposite side of the deflecting pin of the housing 28 that is around the Shank 12 laid tension band connected to a clamping or locking lever 76 which engages in a recess 78 of the housing 28 and the clamping band 72 biases in its closing movement.
- a clamping or locking lever 76 On the opposite side of the deflecting pin of the housing 28 that is around the Shank 12 laid tension band connected to a clamping or locking lever 76 which engages in a recess 78 of the housing 28 and the clamping band 72 biases in its closing movement.
- hooks on at least one side of the housing 28 are hooked into the guided around the opposite side of the shaft 12 clamping rubbers.
- the evaluation unit 36 operates in the master mode in order, if necessary, to receive, store and evaluate the measurement data of a plurality of measurement and calculation circuits 30, which are each transmitted to the evaluation device 36 by means of Bluetooth via a suitable transmission protocol, preferably SPP or HDI and to visualize. In this way, for. B. Two or four players directly compare their evaluated data in a common graph.
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Description
Die Erfindung betrifft eine Vorrichtung und ein Verfahren zur Kontrolle der Genauigkeit, mit der ein Golfschläger mit der Schlagfläche seines Schlägerkopfes einen Golfball trifft.The invention relates to a device and a method for controlling the accuracy with which a golf club hits a golf ball with the club face of its club head.
Insbesondere beim Putten kommt es entscheidend darauf an, dass der hierfür benutzte Putter sehr genau geführt wird, so dass er mit dem unter Berücksichtigung des Schwerpunkts idealen Punkt der Schlagfläche, dem sog. Sweet Spot, auf den Golfball trifft. Ähnlich ist die Situation beim Chippen und Pitchen.Especially when putting, it is crucial that the putter used for this purpose is guided very precisely, so that it hits the golf ball with the ideal point of the face, the so-called sweet spot, taking into account the center of gravity. The situation is similar when chipping and pitching.
Normalerweise ist nur am Ergebnis einer Vielzahl von Putts zu erkennen, ob ein Golfspieler die Putt-Techniken beherrscht und regelmäßig den Sweet Spot trifft. Gelegentlich wird eine Kamera zur Hilfe genommen, um die Bewegungsabläufe zu optimieren, aber die Aufnahmen und die Auswertung der Filme sind zeitaufwendig und verursachen hohe Kosten, so dass sie nur als eine vorübergehende Maßnahme in Frage kommen können. Man kann auch vor jedem Putt eine sich unter Druck verfärbende Folie auf der Schlagfläche des Putters anbringen und anschließend die Folge der Folien auswerten. Dieses Verfahren ist ebenfalls viel zu umständlich, um über einen längeren Zeitraum praktiziert werden zu können.Normally, only the result of a large number of putts reveals whether a golfer masters the putt techniques and regularly hits the sweet spot. Occasionally, a camera is used to help optimize the movement, but shooting and evaluating the movies are time consuming and expensive, so they can only be considered as a temporary measure. It is also possible to apply a pressure-discoloring foil to the face of the putter before each putt and then to evaluate the sequence of the slides. This procedure is also too cumbersome to be practiced over a longer period of time.
Aus der
Bei der
Gleiches gilt für eine Kontrollvorrichtung nach der
Aus der
Schließlich wird von der Firma Alan Electronics GmbH, 63303 Dreieich mit der Internetadresse www.dixxgolf.de unter der Bezeichnung "DiXX Digital Instruction Putter" ein Golfschläger vertrieben, der die Möglichkeit bietet, an der Rückseite des Schlägerkopfes wahlweise ein Gehäuse, das Beschleunigungssensoren, eine Mess- und Auswerteelektronik und einen Flachbildschirm enthält, oder ein Gewicht, das ebenso schwer ist wie diese Einheit, austauschbar zu befestigen. Die Beschleunigungssensoren sind zwar in der Lage, mehrere Parameter der Bewegung des Golfschlägers während eines Schlagschwungs zu erfassen, u. a. auch die Lage des Auftreffpunktes auf der einen oder anderen Seite vom Sweet Spot. Eine punktgenaue Bestimmung derjenigen Stelle der Schlagfläche, mit der der Ball getroffen wurde, ist mit einem solchen Messverfahren jedoch nicht möglich.Finally, by the company Alan Electronics GmbH, 63303 Dreieich with the Internet address www.dixxgolf.de under the name "DiXX Digital Instruction Putter" a golf club sold, which offers the possibility, at the back of the club head either a housing, the acceleration sensors, a Includes metering and evaluation electronics and a flat panel display, or a weight that is as heavy as this unit to attach interchangeably. Although the acceleration sensors are capable of several parameters of the golf club movement during a swing swing including the location of the point of impact on one side or the other of the sweet spot. A precise determination of that point of the club face with which the ball was hit, however, is not possible with such a measuring method.
Der Erfindung liegt daher die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art zu schaffen, die an einem üblichen Golfschläger angebracht werden kann, ohne dessen Eigenschaften wesentlich zu verändern, keine störende Nebentätigkeit während des Spielens nur zu Messzwecken erfordert, die Auftreffpunkte des Golfballs genauer als bisher registriert und die aufgezeichneten und programmgemäß ausgewerteten Messergebnisse in einer Form darstellt, dass sie jederzeit zur Hand sind.The invention is therefore an object of the invention to provide a device of the type mentioned above, which can be attached to a conventional golf club, without changing its properties significantly, no disturbing side activity during playing only requires for measuring purposes, the impact of the golf ball more than registered so far and the recorded and according to the program evaluated measurement results in a form that they are always at hand.
Vorstehende Aufgabe wird erfindungsgemäß gelöst durch eine Vorrichtung mit den Merkmalen des beigefügten Anspruches 1, und auch durch ein Verfahren mit dem Merkmalen des beigefügten Anspruchs 8.The above object is achieved by a device having the features of the appended claim 1, and also by a method having the features of the appended claim 8.
Der plattenförmige Sensor ist so leicht und dünn, dass er bei der Ausführung eines Schlages praktisch nicht wahrnehmbar ist. Infolge der Anbringung auf der Schlagfläche des Golfschlägers, nicht auf dessen Rückseite, wird jeder Auftreffpunkt sehr präzise registriert. Auch die vorzugsweise am Schaft des Golfschlägers befestigbare Mess- und Rechenschaltung vergrößert sein Gewicht nur minimal, denn sie braucht nur die zur Steuerung des Meßvorgangs und zur Bestimmung der Koordinaten des Auftreffpunktes notwendigen Funktionen auszuführen und die Meßergebnisse zum Beispiel an ein Handy oder Smartphone zu funken. Dort können sie gespeichert und mittels geeigneter Programme ausgewertet werden. Ein Handy, Smartphone oder dergleichen mit Funkmodul ist meistens ohnehin vorhanden und wird regelmäßig auch auf den Golfplatz mitgenommen. Geeignete Programme zur Auswertung der Meßergebnisse können über das Internet zum Herunterladen auf das Handy oder Smartphone zur Verfügung gestellt werden. Somit kann unmittelbar nach einem Schlag vom Display des Handys abgelesen werden, welcher Punkt der Schlagfläche den Ball getroffen hat. Der Spieler kann dann bereits beim nächsten Schlag versuchen, einen eventuellen Fehler beim Halten und Führen des Schlägers zu korrigieren. Außerdem kann er jederzeit und bei allen sich bietenden Gelegenheiten, zum Beispiel während einer Eisenbahnfahrt oder in einem Restaurant, das Handy nehmen und allein oder mit anderen Golfspielern die über einen längeren Zeitraum gesammelten, ausgewerteten und zum Beispiel in Diagrammen dargestellten Treffgenauigkeiten betrachten, mit den anderen Spielern vergleichen und diskutieren.The plate-shaped sensor is so light and thin that it is virtually imperceptible when a strike is made. As a result of the attachment to the golf club's face, not on its back, every point of impact is registered very precisely. The preferably attachable to the shaft of the golf club measurement and calculation circuit increases its weight only minimally, because they need only perform the necessary functions to control the measurement process and to determine the coordinates of the impact point and spark the measurement results, for example, to a cell phone or smartphone. There they can be stored and evaluated by means of suitable programs. A cell phone, smartphone or the like with a radio module is usually available anyway and is regularly taken to the golf course. Suitable programs for the evaluation of the measurement results can be made available over the internet for download on the phone or smartphone. Thus, it can be read immediately after a blow from the display of the phone, which point of the club hit the ball. The player can then try on the next stroke to correct any mistake in holding and leading the racket. In addition, at any time and on any occasion, such as during a train ride or in a restaurant, he may take the mobile phone and, with others, view alone or with other golfers the level of accuracy he has collected, evaluated and displayed in graphs, for example Compare and discuss players.
Der plattenförmige Sensor ist nach Art eines Computer-Touchpads aufgebaut mit einer rechteckigen Trägerplatte mit einer auf ihrer Vorderseite aufgetragenen, ersten elektrisch leitfähigen Schicht, die entlang zweier gegenüberliegender Randbereiche jeweils mit einer an eine Signalleitung angeschlossenen, bedruckten Leiterbahn verbunden ist, und einer vor der Trägerplatte angeordneten, biegsamen Schutzplatte mit einer auf ihrer Rückseite aufgetragenen, zweiten elektrisch leitfähigen Schicht, die entlang zweier gegenüberliegender Randbereiche jeweils mit einer an eine Signalleitung angeschlossenen, gedruckten Leiterbahn verbunden ist, die sich quer zu den mit der ersten leitfähigen Schicht verbundenen Leiterbahnen erstreckt, wobei die leitfähigen Schichten durch elastische Abstandhalter getrennt sind, deren Rückstellkraft so gewählt ist, dass es erst bei einem Schlag gegen einen Golfball am Auftreffpunkt vorübergehend zum Kontakt zwischen den leitfähigen Schichten kommt.The plate-shaped sensor is constructed in the manner of a computer touchpad with a rectangular support plate with a first electrically conductive layer applied on its front side, which is connected along two opposite edge regions each with a printed conductor connected to a signal line, and one in front of the carrier plate arranged, flexible protective plate having a deposited on its back, the second electrically conductive layer, which is connected along two opposite edge regions in each case connected to a signal line, a printed conductor extending transversely to the interconnected with the first conductive layer interconnects, wherein the conductive layers are separated by elastic spacers, the restoring force is chosen so that it comes only temporarily when a blow to a golf ball at the point of impact to the contact between the conductive layers.
Ein derartiges Touchpad ist zum Beispiel in der
Es hat sich überraschend gezeigt, dass trotz der im Vergleich zu einem Touchpad höheren, schlagartigen Belastung bei Verwendung gleicher Materialen die Lösung der sich aus den anderen Vorraussetzungen ergebenden Probleme nicht in einer dickeren bzw. stärkeren Ausbildung des Sensors besteht, sondern gerade umgekehrt in einer Reduzierung der Plattenstärke. Während bei einem Touchpad der genannten Art die Trägerplatte normalerweise eine Dicke von etwa 1,6 mm hat, kann die Trägerplatte des neuen Sensors etwa halb so dick sein, denn sie wird über ihre gesamte Fläche auf der Schlagfläche des Golfschlägers abgestützt, so dass eine größere Stärke nicht erforderlich ist.It has surprisingly been found that despite the higher compared to a touchpad, sudden loading when using the same materials, the solution of the problems arising from the other requirements does not exist in a thicker or stronger training of the sensor, but just the other way around in a reduction the plate thickness. While in a touchpad of the type mentioned the support plate normally has a thickness of about 1.6 mm, the support plate of the new sensor can be about half as thick, because it is supported over its entire surface on the clubface of the golf club, so that a larger Strength is not required.
Gleichzeitig wird mit der Reduzierung der Dicke der Trägerplatte der Vorteil erzielt, dass sie und mit ihr der plattenförmige Sensor biegsamer wird, so dass er sich, wenn er mit einer beidseitig klebenden Folie auf der Schlagfläche des Golfschlägers befestigt ist, leichter ablösen lässt.At the same time, with the reduction of the thickness of the carrier plate, the advantage is achieved that it and with it the plate-shaped sensor becomes more flexible, so that when it is fastened with a double-sided adhesive film on the clubface of the golf club, it can be detached more easily.
Ein weiterer Unterschied zwischen dem Sensor der vorgeschlagenen Messvorrichtung und einem Computer-Touchpad besteht darin, dass die Trägerplatte des Touchpads auf ihrer Rückseite bzw. Unterseite mit Leiterbahnen versehen ist und elektronische Bauteile trägt. Bei dem vorgeschlagenen Sensor befindet sich dagegen die Sensorelektronik in dem vorzugsweise am Schaft des Golfschlägers angebrachten Gehäuse der Mess- und Rechenschaltung. Die dünnere Trägerplatte und die Verlagerung der Sensorelektronik an den Schlägerschaft hat die weitere vorteilhafte Folge, dass der gesamte plattenförmige Sensor nur eine Dicke von etwa 1 bis 2 mm zu haben braucht und damit die Schlagfläche des Golfschlägers nur minimal vorverlegt wird.Another difference between the sensor of the proposed measuring device and a computer touchpad is that the support plate of the touchpad on its back or bottom is provided with tracks and carries electronic components. In the case of the proposed sensor, by contrast, the sensor electronics are located in the housing, preferably mounted on the shaft of the golf club, of the measuring and calculating circuit. The thinner support plate and the displacement of the sensor electronics to the club shaft has the further advantageous consequence that the entire plate-shaped sensor need only have a thickness of about 1 to 2 mm and thus the clubface of the golf club is only minimally advanced.
Der Sensor der neuen Vorrichtung ist stärker als ein Computer-Touchpad wechselnder Temperatur und Feuchtigkeit ausgesetzt. Daher ist es zweckmäßig, dass die Schutzplatte im Randbereich bis auf eine Be- und Entlüftungsöffnung materialschlüssig fest und dicht mit der Trägerplatte verbunden, z. B. verklebt ist. Die Be- und Entlüftungsöffnung kann mit einer wasserdichten, aber gasdurchlässigen Folie abgedeckt oder durch eine Überdeckung, wie z. B. bei einer Labyrinthdichtung, so abgedichtet sein, dass der Sensor wenigstens staubund spritzwassergeschützt nach IP54 ist.The sensor of the new device is more exposed to changing temperature and humidity than a computer touchpad. Therefore, it is expedient that the protective plate in the edge region materially connected firmly and tightly connected to the carrier plate except for a ventilation opening, z. B. is glued. The ventilation opening can be covered with a waterproof, but gas-permeable film or by an overlap, such. As in a labyrinth seal, be sealed so that the sensor is at least dust and splash-proof to IP54.
Versuche haben gezeigt, dass die sensorisch aktive Fläche des Sensors nur etwa 45 bis 55 mm breit und für Putter etwa 16 bis 20 mm, für Schläger zum Pitchen und Chippen 20-30 mm hoch zu sein braucht. Der Sweet Spot befindet sich vorzugsweise in der Mitte.Tests have shown that the sensory-active area of the sensor only needs to be about 45 to 55 mm wide and about 16 to 20 mm for putter, and 20-30 mm for rackets for pitching and chipping. The sweet spot is preferably in the middle.
Darüber hinaus erscheint es zweckmäßig, dass die Signalleitungen zwischen dem Sensor und der Mess- und Rechenschaltung eine trennbare Steckverbindung aufweisen. Diese erlaubt es, die beiden Einheiten jeweils einzeln am Golfschläger anzubringen und auszuwechseln. Vorzugsweise ist die eine Steckerhälfte fest am Gehäuse der Mess- oder Rechenschaltung oder fest an der Trägerplatte angebracht, während sich die andere Steckerhälfte am freien Ende eines Kabels befindet. Für die Befestigung dieses Gehäuses am Schaft des Golfschlägers stehen eine Vielzahl von Ausführungsvarianten zur Verfügung. Es kann bereits genügen, das Gehäuse reibschlüssig mittels wenigstens einer Klammer oder eines Spannbandes am Schaft festzulegen, wobei eine gummiartige Anlagefläche oder Zwischenlage von Vorteil ist.In addition, it appears expedient that the signal lines between the sensor and the measuring and computing circuit have a separable connector. This allows the two units to be individually attached to the golf club and replaced. Preferably, one connector half is fixedly attached to the housing of the measuring or arithmetic circuit or fixed to the carrier plate, while the other half connector is located at the free end of a cable. For the attachment of this housing on the shaft of the golf club a variety of design variants are available. It may already be sufficient to fix the housing frictionally by means of at least one clamp or a tension band on the shaft, wherein a rubber-like contact surface or intermediate layer is advantageous.
Ein Ausführungsbeispiel der Erfindung wird nachstehend anhand der Zeichnung näher erläutert. Es zeigen:
- Fig. 1
- eine schematische Darstellung der Gesamtkonfiguration der vorgeschlagenen Vorrichtung;
- Fig. 2
- einen vereinfachten Querschnitt durch den Sensor;
- Fig. 3
- ein Ersatzschaltbild des Sensors;
- Fig. 4
- die wesentlichen Teile der am Schlägerschaft angebrachten Sensorelektronik und
- Fig. 5
- einen vereinfachten Querschnitt durch das Gehäuse der Sensorelektronik und den Schlägerschaft an einer Befestigungsstelle.
- Fig. 1
- a schematic representation of the overall configuration of the proposed device;
- Fig. 2
- a simplified cross section through the sensor;
- Fig. 3
- an equivalent circuit diagram of the sensor;
- Fig. 4
- the essential parts of the attached on the club shaft sensor electronics and
- Fig. 5
- a simplified cross section through the housing of the sensor electronics and the club shaft at an attachment point.
In
Der Sensor 18 ist über eine Steckverbindung 24 und zu einem Kabel 26 zusammengefasste Signalleitungen mit einer in einem Schutzgehäuse 28 montierten, insgesamt mit 30 bezeichneten Sensorelektronik mit einer Mess- und Rechenschaltung verbunden, die mittels eines leicht lösbaren Befestigungsmechanismus 32 am Schaft 12 angebracht ist und über ein Funkmodul 34, vorzugsweise Bluetooth, mit einem mobilen Auswertegerät 36 nach Art eines Handys, Smartphone oder PDA in Verbindung steht, dessen entsprechendes Funkmodul mit 38, Flachbildschirm mit 40 und Tastatur mit 42 bezeichnet sind. Gegebenenfalls kommt als Auswertegerät 36 auch ein Laptop in Frage.The
In dem Auswertegerät 36 werden die von der Mess- und Rechenschaltung 30 ermittelten, auf den Sweet Point 22 bezogenen y-und z-Koordinaten des von dem Sensor 18 punktgenau registrierten Auftreffpunktes eines Golfballs zusammen mit den Koordinaten der Auftreffpunkte weiterer Ballschläge programmgesteuert ausgewertet und graphisch dargestellt.In the
Der Sensor 18 hat den in
Auf ihren gegeneinander weisenden Innenseiten sind die Trägerplatte 48 und die Schutzplatte 50 jeweils mit einer elektrisch leitfähigen Schicht 52 bzw. 54 versehen. Es kann sich dabei um Halbleiterschichten gemäß
Ebenfalls nicht gezeigt sind zwei gedruckte Leiterbahnen, die sich längs gegenüberliegender Randbereiche der Trägerplatte 48 erstrecken und über ihre Länge mit der leitfähigen Schicht 52 elektrisch verbunden sind. Die Trägerplatte 48 ist auf ihrer Innenseite noch mit zwei weiteren gedruckten Leiterbahnen versehen, die sich längs gegenüberliegender Randbereiche im rechten Winkel zu den zuerst genannten Leiterbahnen erstrecken und im montierten Zustand über ihre Länge die elektrisch leitfähige Schicht 54 auf der Schutzplatte 50 kontaktieren. Alternativ könnten die mit der leitfähigen Schicht 54 elektrisch verbundenen Leiterbahnen auch auf die Schutzplatte 50 aufgedruckt sein. Jede der 4 Leiterbahnen ist über eine Signalleitung, die sich in dem Kabel 26 fortsetzt, mit der Mess- und Rechenschaltung 30 verbunden.Also not shown are two printed traces extending along opposite edge portions of the
Wenn die biegsame Schutzplatte 50 an einer Stelle so weit eingedrückt wird, dass die leitfähige Schicht 54 die andere leitfähige Schicht 52 auf der Trägerplatte 48 berührt, kann nach Anlegen einer bestimmten Referenz-Spannung an die mit einer der beiden Schichten verbundenen Leiterbahnen zwischen den mit der jeweils anderen Schicht verbundenen Leiterbahnen eine Spannung gemessen werden, die proportional zu einer Änderung der Abstände des Auftreffpunktes von den mit der Referenzspannung beaufschlagten Leiterbahnen steigt bzw. fällt, so dass nach einer Kalibrierung auch die y- und z-Koordinaten bestimmt werden können.If the flexible
Bei dem Computer-Touchpad der
Demgegenüber ist für das Arbeiten mit dem neuen Sensor wegen der schlagartigen Belastungen ein anderes, schnelleres Meßverfahren vorgesehen. Hierzu wird auf das in
Ohne Berührung der beiden Schichten 52, 54 im Auftreffpunkt ist der Widerstand zwischen einer Leiterbahn der Schicht 52 und einer Leiterbahn der Schicht 54 wegen der Abstandhalter 56 unendlich. Erfolgt punktuell ein ausreichend starker Druck auf die Schutzplatte 50, bilden die beiden Schichten 52, 54 das in
bzw. zwischen Yl und Zo
or between Yl and Zo
sind, wie ersichtlich, proportional zur Position des Auftreffpunktes in Z- und Y-Richtung auf der Sensorfläche. Durch Messung der Spannungen bei Druck auf z. B. vier symmetrisch um den Nullpunkt 22 des Koordinatensystems angeordnete Passermarken 44, die auf die Schutzplatte 50 im Bereich der aktiven Sensorfläche mit definiertem Abstand aufgedruckt sind, lässt sich das Verhältnis zwischen Spannung und Abstand feststellen und damit der Sensor kalibrieren, so dass aus den Spannungswerten eine Umrechnung der Position in mm, relativ zu dem auf den Sweet Spot gelegten Nullpunkt 22 des Koordinatensystems, möglich ist.are, as can be seen, proportional to the position of the impact point in the Z and Y directions on the sensor surface. By measuring the voltages at pressure on z. B. four symmetrically arranged around the
Die Messungen werden fortlaufend mit einer geeigneten Abtastfrequenz von 1kHz bis 4kHz, bevorzugt mit 2kHz, durchgeführt, um die Position eines Auftreffpunktes während der Andruckdauer in beiden Koordinatenrichtungen sicher bestimmten zu können. Außerdem sind auch der Zeitpunkt des Auftreffens des Golfballs und die Andruckdauer dadurch bestimmbar, dass valide Messwerte sich von 0 Volt durch die konstanten Endwiderstände Ryl, Ryr, Rzo und Rzu unterscheiden lassen. Die bei Druckauslösung messbaren Spannungen liegen für die z-Achse zwischen
und für die y-Achse zwischen
and for the y-axis between
In
Am wichtigsten ist ein mit 62 bezeichneter Mikrocomputer mit RAM, FLASH-Speicher, A/D-Wandlern, Ein- und Ausgängen (GPIOs) und seriellem Interface, bevorzugt UART und SPI. Der Mikrocomputer 62 steuert die Beaufschlagung der mit den elektrisch leitfähigen Schichten 52, 54 verbundenen Signalleitungen mit der Referenzspannung, registriert die während der Messvorgänge gemessenen Spannungen und zugehörigen Zeiten und berechnet die Koordinaten der Auftreffpunkte. Diese werden zwischengespeichert und über das Funkmodul 34 mit einer Antenne, bevorzugt einer Keramikantenne 35, an das Auswertegerät 36 weitergeleitet. Als Stromversorgung dient ein Akku 64, dessen Laderegler bei 66 gezeigt ist. Die Aufladung erfolgt über eine Buchse 68, bevorzugt eine USB-Buchse vom Typ Mini-B oder eine 2,5 mm Klinkenbuchse. Über diese Buchse kann auch der Mikrocomputer 62 umprogrammiert werden.Most important is a microcomputer labeled RAM of 62, FLASH memory, A / D converters, inputs and outputs (GPIOs) and serial interface, preferably UART and SPI. The
In
Das Auswertegerät 36 arbeitet im Master-Modus, um ggf. die Messdaten mehrerer Mess- und Rechenschaltungen 30, die zum Beispiel jeweils mittels Bluetooth über ein geeignetes Übertragungsprotokoll, bevorzugt SPP oder HDI, an das Auswertegerät 36 übertragen werden, entgegenzunehmen, zu speichern, auszuwerten und zu visualisieren. Auf diese Weise können z. B. zwei oder vier Spieler ihre ausgewerteten Daten in einem gemeinsamen Kurvendiagramm unmittelbar miteinander vergleichen. The
Claims (8)
- Device for monitoring the accuracy with which a golf club strikes a golf ball with the striking face (16) of its club head (10), comprising an electronic measuring and computing circuit (30) mounted, together with an electrical voltage source (64), in a housing (28) that can be releasably fastened on the shaft (12) or on the back of the head (10) of the golf club and cooperating with the sensor (18) via signal lines (26), by means of which circuit a measuring process for determining the impact site can be performed in the event of an impact on a golf ball, characterised by- a plate-shaped sensor (18) which can be releasably fastened on the striking face (16) in a defined position and by means of which the exact point of the position of the impact point when a golf ball is struck can be located,- the design of the plate-shaped sensor (18) as a touchpad comprising a rectangular support plate (48) having a first electrically conductive layer (52) applied to its front, which is connected along two opposing edge regions to a printed conductor trace connected to a signal line, and having a flexible protective plate (50) which is arranged in front of the support plate (48) and has a second electrically conductive layer (54) which has been applied to the reverse thereof and is connected along two opposing edge regions to respective printed conductor traces, which are connected to a signal line and extend transversely with respect to the conductor traces connected to the first conductive layer (52), the conductive layers (52, 54) being separated by resilient spacers (56), the restoring force of which has been selected in such a way that there is temporary contact between the conductive layers (52, 54) only in the event of an impact on a golf ball at the impact point, whereby the measuring process for determining the coordinates of the impact point in relation to the position of a predetermined reference point (22) can be performed, and- a radio module (34), connected to the measuring and computing circuit (30), for the wireless transmission of the measurement results to an evaluation device (36) in the manner of a mobile phone, smart phone or PDA for the program-controlled evaluation and display of the measurement results on its display screen (40).
- Device according to claim 1, characterised in that the protective plate (50) is securely integrally bonded to the support plate in the edge region, except for at least one air inlet and outlet opening.
- Device according to either claim 1 or claim 2, characterised in that the support plate (48) is at most 1 mm thick and is flexible.
- Device according to any of claims 1 to 3, characterised in that the active sensor face of the sensor (18) is approximately 45 to 55 mm wide, and for putters approximately 16 to 20 mm high, and for clubs for pitching and chipping 20 to 30 mm high.
- Device according to any of claims 1 to 4, characterised in that the plate-shaped sensor (18) can be releasably fastened to the striking face (16) by means of a foil (46), which is adhesive on both sides.
- Device according to claim 1, characterised in that the signal lines (26) have a disconnectable plug connection (24) between the sensor (18) and the measuring and computing circuit (30).
- Device according to claim 1, characterised in that the housing (28) of the measuring and computing circuit (30) can be fastened in a frictionally connected manner to the shaft (12) via a rubber-type contact face (70) by means of a clamping strip (72).
- Method for determining the position of the impact point of a golf ball on the striking face (16) of a golf club by means of a device according to claim 1, characterised in that, during the time of the contact between the conductive layers (52, 54) at the impact point, an electrical voltage is alternatingly applied between respective opposing edge regions of one of the conductive layers (52, 54), and a voltage measurement is performed at at least one of the edge regions of the respective other conductive layer (54, 52), and in that the voltage values are converted into coordinates of the impact point by means of a proportionality factor.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/EP2007/007646 WO2009026951A1 (en) | 2007-09-01 | 2007-09-01 | Apparatus and method for controlling the hitting accuracy in the case of a golf club |
Publications (2)
Publication Number | Publication Date |
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EP2183036A1 EP2183036A1 (en) | 2010-05-12 |
EP2183036B1 true EP2183036B1 (en) | 2014-06-04 |
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Application Number | Title | Priority Date | Filing Date |
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EP07802063.3A Not-in-force EP2183036B1 (en) | 2007-09-01 | 2007-09-01 | Apparatus and method for monitoring golf club hitting accuracy |
Country Status (6)
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US (1) | US20100222152A1 (en) |
EP (1) | EP2183036B1 (en) |
JP (1) | JP2010536514A (en) |
KR (1) | KR20100061710A (en) |
CA (1) | CA2696881A1 (en) |
WO (1) | WO2009026951A1 (en) |
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- 2007-09-01 KR KR1020107007063A patent/KR20100061710A/en not_active Application Discontinuation
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Also Published As
Publication number | Publication date |
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WO2009026951A1 (en) | 2009-03-05 |
KR20100061710A (en) | 2010-06-08 |
EP2183036A1 (en) | 2010-05-12 |
CA2696881A1 (en) | 2009-03-05 |
JP2010536514A (en) | 2010-12-02 |
US20100222152A1 (en) | 2010-09-02 |
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