EP4208267B1 - Bewegungsdetektionsmodul, griff und verfahren - Google Patents

Bewegungsdetektionsmodul, griff und verfahren

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Publication number
EP4208267B1
EP4208267B1 EP21749728.8A EP21749728A EP4208267B1 EP 4208267 B1 EP4208267 B1 EP 4208267B1 EP 21749728 A EP21749728 A EP 21749728A EP 4208267 B1 EP4208267 B1 EP 4208267B1
Authority
EP
European Patent Office
Prior art keywords
detection module
motion detection
force
signal
handle
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.)
Active
Application number
EP21749728.8A
Other languages
English (en)
French (fr)
Other versions
EP4208267A1 (de
EP4208267C0 (de
Inventor
Willem Albertus DE GIER
Martin Gerhard Philip DE GIER
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.)
Gieral BV
Original Assignee
Gieral BV
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 Gieral BV filed Critical Gieral BV
Publication of EP4208267A1 publication Critical patent/EP4208267A1/de
Application granted granted Critical
Publication of EP4208267C0 publication Critical patent/EP4208267C0/de
Publication of EP4208267B1 publication Critical patent/EP4208267B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
    • A63B22/0076—Rowing machines for conditioning the cardio-vascular system
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
    • A63B21/15—Arrangements for force transmissions
    • A63B21/151—Using flexible elements for reciprocating movements, e.g. ropes or chains
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
    • A63B21/40—Interfaces with the user related to strength training; Details thereof
    • A63B21/4027—Specific exercise interfaces
    • A63B21/4033—Handles, pedals, bars or platforms
    • A63B21/4035—Handles, pedals, bars or platforms for operation by hand
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
    • A63B21/40—Interfaces with the user related to strength training; Details thereof
    • A63B21/4041—Interfaces with the user related to strength training; Details thereof characterised by the movements of the interface
    • A63B21/4049—Rotational movement
    • 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
    • A63B24/0087—Electric or electronic controls for exercising apparatus of groups A63B21/00 - A63B23/00, e.g. controlling load
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
    • A63B22/0076—Rowing machines for conditioning the cardio-vascular system
    • A63B2022/0079—Rowing machines for conditioning the cardio-vascular system with a pulling cable
    • 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
    • A63B24/0087—Electric or electronic controls for exercising apparatus of groups A63B21/00 - A63B23/00, e.g. controlling load
    • A63B2024/0093—Electric or electronic controls for exercising apparatus of groups A63B21/00 - A63B23/00, e.g. controlling load the load of the exercise apparatus being controlled by performance parameters, e.g. distance or speed
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
    • A63B21/15—Arrangements for force transmissions
    • A63B21/151—Using flexible elements for reciprocating movements, e.g. ropes or chains
    • A63B21/153—Using flexible elements for reciprocating movements, e.g. ropes or chains wound-up and unwound during exercise, e.g. from a reel
    • 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
    • A63B2220/20—Distances or displacements
    • 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
    • A63B2220/50—Force related parameters
    • A63B2220/51—Force
    • 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
    • A63B2220/803—Motion sensors
    • 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
    • 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 motion detection module and method.
  • the invention relates to a motion detection module for indoor rowing machines.
  • Performance in many sports, including rowing is measured by the amount of energy over time or work exerted by the athlete.
  • a fluid mechanical device being either a fan, turning in air, or a set of paddles turning in a liquid.
  • these machines are provided with a flywheel and a dissipator, where the dissipator is either a set of paddles moving through an amount of water or a fan mounted on the flywheel moving through air.
  • the ambient conditions can have a substantial impact on the fluid dynamics of both air and water, introducing unpredictable and over time varying errors.
  • this flywheel may be in the form of a fan turning in air, or a set of paddles turning in a liquid, or a metal disc with magnetic brakes.
  • this method Since the amount of power is thus deduced or obtained indirectly, this method is prone to inaccuracies due to varying ambient conditions like pollution, temperature, altitude, amount of water, friction etc. Furthermore, it also allows each manufacturer to have his own method of calculation of the methods and formulae to calculate the amount of exerted power by the athlete from the acceleration and deceleration of the flywheel and thus may introduce a factory biased way of the calculation of the power exerted by the athlete.
  • the US patent application US2011/0118086 discloses a control system and method for exercise equipment to provide an accurate simulation. More specific a stationary exercise bike is claimed having a flywheel with a variable resistance force and two sensors; a resistance force measuring sensor and a flywheel velocity and position sensor.
  • the object of the invention can be seen in providing a highly accurate and relatively inexpensive built in or add on motion detection module for fitness devices, e.g. rowing machines that can accurately detect the motion of the handle, the force exerted on the handle and thus calculate the amount of work or energy exerted by a user.
  • a highly accurate and relatively inexpensive built in or add on motion detection module for fitness devices e.g. rowing machines that can accurately detect the motion of the handle, the force exerted on the handle and thus calculate the amount of work or energy exerted by a user.
  • a motion detection module according to claim 1.
  • the detection of the motion of the flexible power transfer and/or the handle or grip at its distal end can be obtained directly and accurately.
  • the motion detection module can comprise a sensor configured for sensing variations in the vibrations, accelerations, the acoustics, the exerted force and/or variations in any other dynamic property of the flexible power transfer, due to the polygon effect.
  • the sensor can for instance be a force sensor.
  • the module can comprise a signal processor wherein the signal processor may comprise a frequency band width filter configured to separate the measured signal from the force sensor in a first relative low frequency force signal and a second relative high frequency motion signal.
  • the signal processor may comprise a frequency band width filter configured to separate the measured signal from the force sensor in a first relative low frequency force signal and a second relative high frequency motion signal.
  • the relative high frequency signals can serve for measuring the distance or time of travel, while the relative low frequency signal can serve for measuring the force exerted by the user.
  • the relative high frequency signals can serve for measuring the distance or time of travel
  • the relative low frequency signal can serve for measuring the force exerted by the user.
  • the force sensor can be mounted in a handle or a grip of a fitness device, such as a rowing machine.
  • the force sensor is mounted between the handle or grip and the flexible power transfer, such as a cable or chain, wherein the flexible power transfer is configured to be retractably connected to a base of a rowing machine at its proximal end.
  • the flexible power transfer such as a cable or chain
  • the signal processor can be configured to deduce the amount of force exerted by a user from the first relative low frequency repetitive force signal, and the signal processor can be further configured to deduce the travel of the handle from the second relative high frequency repetitive force signal.
  • the separate signals can serve for their separate purposes, one being the calculation of travel, the other being for the measurement of the exerted force.
  • the module may be equipped with a wireless transmission to a computer or mobile device. Thus, no cables or connections are needed, that may interfere with the usage of the fitness device in question.
  • the module can be equipped with an automatic off switch, configured to switch off when e.g. over a prolonged time, no force is detected. Thus the use of power of the module can be saved.
  • the signal processor in the module can be configured to perform various other functions, such as a gaming console, radio or television operation.
  • the use of the fitness device can be integrated in a game surrounding, where during the use of the fitness device, the user may experience a video/audio or 3D game interface, through which he or she has to move by using the machine.
  • the invention further encompasses a method of deducing the distance of travel of a flexible power transfer of a fitness device, such as a rowing machine during its use, according to claim 12.
  • the motion detection module can comprise a force sensor, such that the measurement of both travel and exerted power can be obtained by one and the same sensor.
  • the method of deducing the distance of travel of a flexible power transfer of a fitness device can be further comprising the steps of: Obtaining a signal from the force sensor during the use of the device; splitting the measured signal of the motion detection module in a high and a low frequency band, using the low frequency band signal as the force signal; using the high frequency band signal in a counter to count the number of cycles resulting from the polygon effect; calculating the distance of travel by the number of high frequency cycles; Using the obtained force signal and the calculated travel of the handle or grip to calculate the amount of work or energy that is exerted by the user during the motion of the grip or the handle of the fitness device.
  • the signals of the sensor can be calculated and processed within the hard- and/or software of the signal processor of the motion detection module, and the obtained data about the amount of work or energy exerted by a user can be transmitted to a centralised or distributed application for competition rowing, either real time or in a specific time delay period independent of the location of the users.
  • training and competition can be done independently or in a competition environment, where competition can be performed while the specific location of the users and the specific time the users on which they perform their races or training can be irrelevant for the competition.
  • a once performed race by a first user can be used in a time delayed race for a second user.
  • the measurement device can be integrated in the handle of the rowing machine, and no further adaptations are needed or necessary.
  • the various external factors such as temperature, air pressure and air humidity, system friction etc. do not interfere with the accuracy of the measured values.
  • Polygon effect used herein is to be understood as, though not to be considered limited to the effect occurring where a flexible power transfer such as a chain or a toothed belt is running over a rotating body, such as a pulley, a gear wheel or a sprocket, and any divergence of roundness in the rotating body expresses a slight variation in force, motion and/or acceleration, due to the divergence in the roundness.
  • a chain guided over a sprocket for the transfer of force experiences a typical variation in speed of travel of the chain at the passing of each chain link of that chain at each dent of the sprocket.
  • the sprocket In the case a sprocket has for example 17 teeth, the sprocket actually represents a polygon having 17 angles. The effect in variation of speed with these 17 angles is just below 2%.
  • flexible power transfer used herein is to be understood as, though not to be considered limited to an elongated element, having a longitudinal axis which is at least flexible in one axis, perpendicular to its longitudinal axis, such that it can run over a substantially round rotating body, such as pulley, a sprocket or a gear wheel.
  • the flexible power transfer is a chain, a toothed belt, a rope or the like, where the power is transferred from a substantially linear traction to a rotating motion and/or vice versa.
  • distal end used herein is to be understood as, though not to be considered limited to an end of a flexible power transfer that is extending, connected or connectable to a handle or grip, and that is configured to be moved from a retracted into an extracted or extended position back and forth.
  • proximal end used herein is to be understood as, though not to be considered limited to an end of a flexible power transfer that is connected to e.g. a base of a fitness device, such as a rowing machine, and that remains relative proximal to the machine, even when the distal end is in an extracted position.
  • a base of a fitness device such as a rowing machine
  • the proximal end is connected to the base by means of a spring or a elastically extendable material, such as a rubber band.
  • FIG 1 a schematic perspective view of a rowing machine 1 is shown.
  • the rowing machine 1 is operated by a user U, who holds in his hands H a handle 2, which is described in more detail herein below.
  • the User U is seated on a sliding seat 3, which can slide over a hollow beam of base 4.
  • Base 4 is provided with some adjustably mounted footholds 5, on which the feet F of the user U can be strapped.
  • the handle 2 is connected to a first end of chain 6, which chain 6 runs over a sprocket 7.
  • the sprocket 7 is mounted inside the base 4 of the rowing machine 1 and is directly coupled and connected to a flywheel 8, which can rotate inside a housing 9.
  • the housing 9 is mounted on the base 4, and typically the flywheel 9 in the housing is connected to a dissipator, typically a fan that can rotate in a volume of air.
  • the user U is exerting a pulling force in his arms and a pushing force in his legs.
  • the handle 2 is moved in a direction D away from the sprocket 7 and the flywheel 8.
  • the chain 6 runs over and engages with the sprocket 7, during the stretching motion of the user the sprocket 7 and the flywheel 8 commence to rotate.
  • This rotating motion is dissipated by the fan or by any other means e.g. an eddy current disk.
  • a first end of a spring or an elastic cord mounted inside the base 4 at the distal end.
  • the spring or the cord is at its other end connected to the second end of the chain.
  • FIG 2 a schematic perspective view of a handle 2 is depicted.
  • the handle is provided with two grips 10 and 11, to be held by the user with his left hand and right hand respectively.
  • the grips 10 and 11 can be provided with a soft cover 12 and 13 respectively, for improving the cushioning between the inside of the hands of the user and the handle 2.
  • the handle 2 comprises a rod 14 extending from the grip 10 to grip 12 and is provided with a housing 15.
  • the housing 15 can be closed of with a cover 16, and inside the housing 15 a force sensor 17 and a signal processor 18 are provided.
  • the signal processor 18 is equipped with a logic circuitry for performing its tasks.
  • the logic circuitry can be equipped with a battery holder 19.
  • the chain 6 is attached to the handle through the force sensor 17, such that the force exerted on the handle by user U can be measured.
  • the chain 6 may be connected by means of a connector 20, which connector 20 is attached to the force sensor 17.
  • FIG 3 a detail of the chain 6 is depicted.
  • the chain 6 runs over and engages with sprocket 7.
  • the lines 22, 23, 24, 25 and 26 show that the motion of the chain around the sprocket 7, while the chain 6 is being pulled actually is slightly uneven.
  • the chain 6 is during the active stretching of the user experiencing a nett force in the direction 27, towards its first end and the handle 2.
  • the chain 6 is experiencing a nett force in the direction 28, towards the second end of the chain 6 by the force of the spring or rubber cord inside the base 4 exerted on the chain 6.
  • phase III When the user starts pulling, he exerts a force during the extension of his legs and the retraction of his arms up to a maximum in phase II.
  • phase III At the end of the motion of the user U, in phase III, the user U has fully stretched his legs and maximally retracted his arms, and the force is again relative low in phase III. After this phase III, the user U relaxes, and moves back towards the fly wheel 8 of the rowing machine 1.
  • Curve 29 comprises a sinusoidal variation.
  • the high frequency, relative small variation can be electrically separated from the main force characteristic by applying a frequency band pass filter.
  • FIG. 5 a schematic modular design diagram is depicted showing how the measured force is processed.
  • the motion sensor generates a signal that is magnified in a first amplifier 33, than split at junction 34 and sent to a frequency band pass filter 35, where the relative low frequency, relative large force characteristic is filtered out such that a naked high relative frequency signal remains, which is sent to a second amplifier 36 and then to a signal processor 37.
  • the signal processor 37 is provided with a power source 38, typically a battery, and a series of functional switches 39 like an on switch and/or an off switch.
  • the number of undulations in the relative high frequency signal are counted and added up during each rowing motion of the user U.
  • the obtained number represents the motion of travel of the handle 2, and can be calculated by multiplying this number with the length of a link 21A-21C.
  • the main characteristic force signal is sent through an analogue digital converter 40, which is sending this digital signal to the signal processor 37.
  • the signal processor 37 the amount of work exerted by user U is calculated, by aggregating the exerted force, obtained by the relatively low frequency signal, over the travelled distance of the handle, obtained by the relatively high frequency signal.
  • the module is equipped with a transmitter 41 and an antenna 42.
  • a transmitter 41 and an antenna 42 This can be e.g. a blue tooth transmitter or any other suitable transmitter.
  • the thus obtained values representing the personal performance of user U can be used in a web application to store and compare with the user performance of other users. Since the obtained exerted energy is now highly accurate, a fair comparison and a fair competition between users on a real time basis or on a delayed time basis can now be performed, totally independent from their location and totally independent from any locally existing ambient conditions.
  • FIG 6 an alternative design of a handle 2 for a rowing machine 1 is depicted.
  • the handle 2 has a rounded off wedge shape, wherein for example an extruded rod 14 is provided with two grips 10 and 11, each having a cover 12 and 13 respectively.
  • two battery holders 19A and 19B can be inserted for providing the power to the signal processor 18.
  • the signal processor 18 comprises a series of integrated circuits 46, 47 and 48, mounted on a printed circuit board 43, which is connected by a set of brackets 49 and 50 to a base 51.
  • a force sensor 17 mounted on the base 51 is a force sensor 17, which is in its middle connected through an opening in the base 51 by means of connector 52 to a chain 6.
  • two strain gauges 44 and 45 are providing a force signal to the signal processor 18.
  • the application of the polygon effect may also be integrated in e.g. a bicycle for determination of the distance of travel of the bicycle or the power exerted on it by a user.
  • An additional calculation may be integrated in the invention for conversion to the amount of bodily fat being converted in energy.
  • the invention is furthermore applicable in various power lifting applications, where force and distance can be measured and distance or time specific work can be calculated.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Cardiology (AREA)
  • Vascular Medicine (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)

Claims (15)

  1. Bewegungserfassungsmodul zum Erfassen von Bewegung, umfassend:
    - einen einziehbaren Handgriff (2) oder Griff (11, 12), der an einem distalen Ende einer flexiblen Leistungsübertragung (6) angebracht ist,
    - -einen rotierenden Körper (7), über den die flexible Leistungsübertragung (6) läuft, wobei der rotierende Körper (7) einen Umfang aufweist, der ein oder mehrere Segmente eines Polygons umfasst,
    dadurch gekennzeichnet, dass das Bewegungserfassungsmodul dazu konfiguriert ist, die Bewegung der flexiblen Leistungsübertragung (6) durch Erfassen von Variationen in einer oder mehreren dynamischen Eigenschaften, die durch den Polygoneffekt verursacht werden, zu erkennen.
  2. Bewegungserfassungsmodul nach Anspruch 1, umfassend einen Sensor, der dazu konfiguriert ist, Variationen in den Vibrationen, Beschleunigungen, der Akustik, der ausgeübten Kraft und/oder Variationen in einer anderen dynamischen Eigenschaft der flexiblen Kraftübertragung (6) aufgrund des Polygoneffekts zu erfassen.
  3. Bewegungserfassungsmodul nach Anspruch 1 oder 2, wobei das Modul einen Kraftsensor (17) umfasst.
  4. Bewegungserfassungsmodul nach Anspruch 3, wobei das Modul einen Signalprozessor (18, 37) umfasst, wobei der Signalprozessor (18, 37) einen Frequenzbandbreitenfilter (35) umfasst, der dazu konfiguriert ist, das gemessene Signal von dem Kraftsensor (17) in ein erstes relativ niederfrequentes Kraftsignal und ein zweites relativ hochfrequentes Bewegungssignal zu trennen.
  5. Bewegungserfassungsmodul nach Anspruch 3 oder 4, wobei der Kraftsensor (17) in dem Handgriff (2) oder Griff (11, 12) eines Fitnessgeräts (1), wie einem Rudergerät (1), montierbar ist.
  6. Bewegungserfassungsmodul nach Anspruch 5, wobei der Kraftsensor (17) zwischen dem Handgriff (2) oder Griff (11, 12) und der flexiblen Leistungsübertragung (6), wie etwa einem Kabel oder einer Kette (6), montierbar ist, wobei die flexible Leistungsübertragung (6) dazu konfiguriert ist, an ihrem proximalen Ende mit einer Basis (4) eines Rudergeräts (1) einziehbar verbunden zu sein.
  7. Bewegungserfassungsmodul nach einem der Ansprüche 4 bis 6, wobei der Signalprozessor (18, 37) dazu konfiguriert ist, aus dem ersten relativen niederfrequenten, sich wiederholenden Kraftsignal den Betrag der von einem Benutzer ausgeübten Kraft abzuleiten, und der Signalprozessor (18, 37) ferner dazu konfiguriert ist, aus dem zweiten relativen hochfrequenten, sich wiederholenden Kraftsignal den Weg des Handgriffs (2) abzuleiten.
  8. Bewegungserfassungsmodul nach einem der vorstehenden Ansprüche, wobei das Modul mit einer drahtlosen Übertragung zu einem Computer oder einer mobilen Vorrichtung ausgestattet ist.
  9. Bewegungserfassungsmodul nach einem der vorstehenden Ansprüche, wobei das Modul mit einem elektronischen Einschalter (39) ausgestattet ist, um seinen Signalprozessor (18) mit Strom zu versorgen.
  10. Bewegungserfassungsmodul nach einem der vorstehenden Ansprüche, wobei das Modul mit einem automatischen Ausschalter (39) ausgestattet ist, der dazu konfiguriert ist, sich auszuschalten, wenn z. B. über einen längeren Zeitraum keine Kraft erfasst wird.
  11. Bewegungserfassungsmodul nach einem der vorstehenden Ansprüche, wobei der Signalprozessor (18, 37) dazu konfiguriert ist, verschiedene andere Funktionen auszuführen, wie z. B. den Betrieb einer Spielkonsole, eines Radios oder eines Fernsehers.
  12. Verfahren zum Ableiten der Wegstrecke einer flexiblen Leistungsübertragung (6) eines Fitnessgeräts (1), wie etwa eines Rudergeräts (1), während seiner Benutzung, umfassend die folgenden Schritte, die in jeder geeigneten Reihenfolge auszuführen sind:
    a) Bereitstellen eines Fitnessgeräts (1), wie etwa eines Rudergeräts (1),
    b) Bereitstellen des Bewegungserfassungsmoduls nach Anspruch 1, das ausgestattet ist
    mit einem einziehbaren Handgriff (2) oder Griff (11, 12) an einem distalen Ende einer flexiblen Leistungsübertragung (6), wobei die flexible Leistungsübertragung (6) über einen rotierenden Körper (7) verläuft, wobei der rotierende Körper (7) einen Umfang aufweist, der ein oder mehrere Segmente eines Polygons umfasst;
    c) Verwenden des Fitnessgeräts (1), wie etwa eines Rudergeräts (1);
    d) Erfassen des Polygoneffekts mit dem Bewegungserfassungsmodul;
    e) Zählen der Anzahl von Phasen in einem Signal, das Variationen aufgrund des Polygoneffekts enthält;
    f) Berechnen der Wegstrecke der flexiblen Leistungsübertragung (6) durch Multiplizieren der gezählten Anzahl von Phasen in dem Signal mit der Länge der Segmente des Polygons des rotierenden Körpers (7).
  13. Verfahren nach Anspruch 12, wobei das Bewegungserfassungsmodul einen Kraftsensor (17) umfasst.
  14. Verfahren nach Anspruch 13, umfassend die folgenden zusätzlichen Schritte:
    A) Erhalten eines Signals von dem Kraftsensor (17) während der Benutzung des Geräts;
    B) Aufspalten des gemessenen Signals des Bewegungserfassungsmoduls in ein hohes und ein niedriges Frequenzband;
    C) Verwenden des Niederfrequenzbandsignals als Kraftsignal;
    D) Verwenden des Hochfrequenzbandsignals in einem Zähler zum Zählen der Anzahl von Zyklen, die sich aus dem Polygoneffekt ergeben, wie in Anspruch 12, Schritt d) angegeben;
    E) Berechnen der Wegstrecke anhand der Anzahl von Hochfrequenzzyklen, wie in Anspruch 12, Schritt e) und f) angegeben;
    F) Verwenden des erhaltenen Kraftsignals und des berechneten Weges des Handgriffs (2) oder des Griffs (11, 12) zum Berechnen der Menge an Arbeit oder Energie, die von dem Benutzer während der Bewegung des Griffs (11, 12) oder des Handgriffs (2) des Fitnessgeräts (1) ausgeübt wird.
  15. Verfahren nach einem der Ansprüche 12 bis 14, wobei die Signale des Sensors in der Hard- und/oder Software des Signalprozessors (18, 37) des Bewegungserfassungsmoduls berechnet und verarbeitet werden und die erhaltenen Daten über die von einem Benutzer ausgeübte Arbeit oder Energie an eine zentrale oder verteilte Anwendung für Wettkampfrudern übertragen werden, entweder in Echtzeit oder in einer bestimmten Zeitverzögerungsperiode unabhängig von dem Standort der Benutzer.
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JPH0669500B2 (ja) 1987-10-19 1994-09-07 コンビ株式会社 ロ−イングマシ−ン
US7976434B2 (en) * 2005-12-22 2011-07-12 Scott B. Radow Exercise device
US20180339196A1 (en) * 2017-05-26 2018-11-29 Cleveland State University Powered machine and control method
US10307631B2 (en) * 2017-09-01 2019-06-04 Bojan Jeremic Electronically controlled mechanical resistance device for rowing machines
CN207627861U (zh) 2017-11-01 2018-07-20 北京奥图无线技术有限公司 划船机智能手柄
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CN109847263B (zh) 2018-12-29 2020-11-24 中国科学院合肥物质科学研究院 一种基于划船器的柔韧协调性训练系统

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