WO2008136588A1 - Apparatus and method for controlling load of rotational sporting goods - Google Patents

Apparatus and method for controlling load of rotational sporting goods Download PDF

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Publication number
WO2008136588A1
WO2008136588A1 PCT/KR2008/002413 KR2008002413W WO2008136588A1 WO 2008136588 A1 WO2008136588 A1 WO 2008136588A1 KR 2008002413 W KR2008002413 W KR 2008002413W WO 2008136588 A1 WO2008136588 A1 WO 2008136588A1
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WO
WIPO (PCT)
Prior art keywords
resistor
permanent magnet
magnet generator
rotary type
training machine
Prior art date
Application number
PCT/KR2008/002413
Other languages
French (fr)
Inventor
Sang Bae Jung
Hee Jae Park
Original Assignee
Sang Bae Jung
Hee Jae Park
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 Sang Bae Jung, Hee Jae Park filed Critical Sang Bae Jung
Publication of WO2008136588A1 publication Critical patent/WO2008136588A1/en

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Classifications

    • 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
    • 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
    • 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
    • A63B21/005—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using electromagnetic or electric force-resisters
    • A63B21/0053—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using electromagnetic or electric force-resisters using alternators or dynamos

Definitions

  • the present invention relates to an apparatus and method for controlling an exercise load of rotary sporting goods such as a cycle for fitness and an elliptical machine, and more particularly, to an apparatus and method for controlling an exercise load of a rotary type training machine through an on/off switching control of a circuit composed of a permanent magnet generator and a resistor.
  • Training machines for health promotion are generally classified into four types, that is, a weight type using gravity, a hydraulic cylinder type using resistance of fluidic viscosity, a brake type applying a frictional force to a rotation wheel, and a magnetic type generating induced current by approaching a magnetic substance to a rotating conductor.
  • a training machine of weight type is hardly used as a load in exercises except for weight and resistance training.
  • the training machine of weight type is inconvenient to use it in a narrow space, since it is heavy.
  • the training machine of weight type can adjust a degree of strength in load step by step, so that it is not possible to continuously adjust the degree of strength.
  • a training machine of hydraulic cylinder type is light and small because of its simple principle. However, it is difficult for a user to easily adjust the training load.
  • a training machine of brake type has the durability lower than other types, and generates noise and dust. Also, since a static frictional force is larger than a kinetic frictional force, it is difficult to simulate actual exercise.
  • a training machine of magnetic type employs a heavy flywheel to obtain sufficient load from an induced current. Therefore, the weight of the appliance is increased, and the maximum load to be applied to a user is relatively low.
  • a device such as a mechanical actuator should be added to control the load, and additional sensors should be added to obtain the information on the exercise of a user.
  • An object of the present invention is to provide an apparatus and method for controlling a load of rotary type training machine which can reduce the volume and weight of the rotary type training machine, linearly control a magnitude of the load of the rotary type training machine, easily control an exercise load by a user of the rotary type training machine or a personal computer to simulate actual outdoor exercise, and easily measure an exercise amount of the user operating the rotary type training machine.
  • an apparatus for controlling an exercise load of a rotary type training machine which includes a permanent magnet generator, coupled to a rotor of the rotary type training machine, for generating an electric power using electromagnetic induction produced when the rotor is rotated; a resistor adapted to consume the electric power generated by the permanent magnet generator; a switching circuit unit for performing an on/off switching of a circuit including the permanent magnet generator and the resistor; and a switching circuit control unit for adjusting an on/off ratio of the switching circuit unit.
  • a method for controlling an exercise load of a rotary type training machine which includes the steps of generating an electric power by using a permanent magnet generator coupled to a rotor of the rotary type training machine based on electromagnetic induction produced when the rotor is rotated; consuming the electric power generated by the permanent magnet generator using a resistor; determining an on/off ratio of a circuit including the permanent magnet generator and the resistor; and performing an on/off switching of the circuit including the permanent magnet generator and the resistor in accordance with the determined on/off ratio.
  • FIG. 1 is a block diagram illustrating the construction of a load control apparatus according to an embodiment of the present invention
  • FIG. 2 is a circuit diagram illustrating the construction of a switching circuit unit and a switching circuit control unit in a load control apparatus according to an embodiment of the present invention.
  • FIG. 3 is a flowchart explaining a load control method according to an embodiment of the present invention. Best Mode for Carrying Out the Invention
  • the term “connected to” or “coupled to” that is used to designate a connection or coupling of one element to another element includes both a case that an element is “directly connected or coupled to” another element and a case that an element is “electrically connected or coupled to” another element via still another element.
  • the term “directly connected to” or “directly coupled to” means that an element is connected or coupled to another element without intervention of any other element.
  • the term “comprises” and/or “comprising” used in the description means that one or more other components, steps, operation and/or existence or addition of elements are not excluded in addition to the described components, steps, operation and/or elements.
  • the load control apparatus includes a permanent magnet generator 100, a resistor 200, a switching circuit unit 300, and a switching circuit control unit 400.
  • the load control apparatus may include a hall sensor 500 and an exercise amount calculation unit 600.
  • the permanent magnet generator 100 is coupled to a rotor of the rotary type training machine to generate an electric power through electromagnetic induction produced when the rotor is rotated.
  • the rotor of the rotary type training machine is rotated by the exercise of the user, and thus the permanent magnet generator coupled to the rotor generates the electric power through the electromagnetic induction.
  • the resistor 200 is adapted to consume the electric power generated by the permanent magnet generator 100. That is, the resistor 200 consumes the electric power generated by the permanent magnet generator 100 while the user rotates the rotor of the permanent magnet generator 100. By controlling the amount of power being consumed in the resistor 200 through the switching of the circuit, the load of the training machine connected to the permanent magnet generator 100 can be controlled.
  • the resistor 200 may be a light emitting element, such as an LED, a lamp, or the like, or a heating element. In the case of using the light emitting element, the light emitting element emits light during the exercise of the user. If an exercise amount of the user is increased, the amount of power generated by the permanent magnet generator 100 becomes larger, so that brighter light is emitted. Consequently, the user can intuitively recognize his/her exercise amount based on the intensity of the light emitted from the light emitting element.
  • the switching circuit unit 300 is adapted to perform an on/off switching of the circuit including the permanent magnet generator 100 and the resistor 200.
  • the switching circuit unit 300 may include an SCR (Silicon-Controlled Rectifier Thyristor) , an FET (Field Effect Transistor) or a transistor.
  • the switching circuit control unit 400 is adapted to adjust the on/off ratio of the switching circuit unit 300.
  • the switching circuit control unit 400 determines the on/off ratio of the switching circuit unit 300 to control the load of the training machine, and drives the switching circuit unit 300 in accordance with the determined on/off ratio.
  • the switching circuit unit 300 performs the on/off switching of the circuit in accordance with the on/off ratio adjusted by the switching circuit control unit 400.
  • a digital device such as a PC, a PDA or a mobile terminal
  • the switching circuit control unit 400 can adjust the on/off ratio on the basis of the signal output from the digital device.
  • the switching circuit unit 300 and the switching circuit control unit 400 according to the present invention will now be described in detail with reference to FIG. 2.
  • the switching circuit unit 300 includes a 3-pole thyristor 320 and a DIAC (Diode AC Switch) 310, and the switching circuit control unit 400 includes a variable resistor 410 and a capacitor 420.
  • DIAC Diode AC Switch
  • the 3-pole thyristor 320 is adapted to perform an on/off switching of the circuit including the permanent magnet generator 100 and the resistor 200.
  • a TRIAC Triode AC Switch
  • an SCR may be used as the 3-pole thyristor.
  • the DIAC 310 is adapted to control the on/off switching of the 3-pole thyristor 320 in accordance with a voltage at both terminals of the variable resistor 410.
  • the variable resistor 410 is adapted to determine the on/off ratio by adjusting the level and the phase of the voltage for triggering the DIAC 310.
  • the variable resistor 410 includes an analog type resistor or a digital type resistor such as an electronic volume.
  • the capacitor 420 is connected in series with the variable resistor 410 to form an RC circuit.
  • the resistance value of the variable resistor 410 is "highest", the voltage V R at both terminals of the variable resistor 410 becomes highest, and the trigger voltage V 0 becomes lowest. Accordingly, the DIAC 310 does not reach the trigger level, and thus the 3-pole thyristor 320 is not turned on. In this case, since the whole circuit is in an off state and no energy is consumed in the resistor 200, the user cannot feel a load, except for the load generated due to a mechanical friction.
  • the resistance value of the variable resistor 410 is "high"
  • the voltage V R at both terminals of the variable resistor 410 becomes high
  • the trigger voltage V c becomes low. Accordingly, the time for the DIAC 310 to reach the trigger level is delayed, and thus the turn-on time of the three-pole thyristor 320 becomes shorter than the turn-off time thereof. Consequently, the turn-on time of the whole circuit becomes shorter than the turn-off time thereof, and a small amount of energy is consumed in the resistor 220, so that the user feels a weak exercise load.
  • the resistance value of the variable resistor 410 is "middle"
  • the voltage V R at both terminals of the variable resistor 410 becomes middle
  • the trigger voltage V c also becomes middle. Accordingly, the DIAC 310 is triggered at a middle speed, and thus the turn-on time of the three-pole thyristor 320 becomes equal to the turn-off time thereof. Consequently, the turn-on time of the whole circuit becomes equal to the turn-off time thereof, and a middle amount of energy is consumed in the resistor 220, so that the user feels a miidle exercise load.
  • the resistance value of the variable resistor 410 is "low", the voltage V R at both terminals of the variable resistor 410 becomes low, and the trigger voltage V c becomes high. Accordingly, the DIAC 310 is triggered at a high speed, and thus the turn-on time of the three-pole thyristor 320 becomes larger than the turn-off time thereof. Consequently, the turn-on time of the whole circuit becomes longer than the turn-off time thereof, and a large amount of energy is consumed in the resistor 220, so that the user feels a great exercise load. If the resistance value of the variable resistor 410 is "lowest", the voltage V R at both terminals of the variable resistor 410 becomes lowest, and the trigger voltage V c becomes highest.
  • the DIAC 310 is always in a triggered state, and thus the 3-pole thyristor 320 is always in an on state.
  • the whole circuit is always a closed circuit and maximum energy is consumed in the resistor 200, the user cannot feel the greatest exercise load.
  • the hall sensor 500 is adapted to detect an intensity of the magnetic field generated by the electric current flowing in the circuit including the permanent magnet generator 100 and the resistor 200, and a magnetic field is formed around the circuit due to the electromagnetic induction. At this time, the hall sensor 500 detects the generated magnetic field.
  • the exercise amount calculation unit 600 calculates and displays the exercise amount of the user who operates the rotary type training machine based on the intensity of the magnetic field detected by the hall sensor 500.
  • the intensity of the magnetic field detected by the hall sensor 500 is in proportion to the exercise amount of the user who operates the rotary type training machine. Consequently, the exercise amount calculation unit 600 calculates the exercise amount of the user based on the intensity of the magnetic field, and displays the result of calculation to allow the user to confirm his/her exercise amount.
  • the load control apparatus can reduce the volume and weight of the rotary type training machine, linearly control the magnitude of the load of the rotary type training machine, easily control the exercise load by the user of the rotary type training machine or a personal computer to simulate actual outdoor exercise, and easily measure the exercise amount of the user operating the rotary type training machine.
  • the load control method according an embodiment of the present invention will now be described in detail with reference to FIG. 3.
  • the permanent magnet generator 100 coupled to the rotor of the rotary type training machine generates the electric power based on the electromagnetic induction produced when the rotor is rotated (S310) .
  • the rotor of the rotary type training machine is rotated by the exercise of the user, and the permanent magnet generator coupled to the rotor generates the electric power using the electromagnetic induction.
  • the resistor 200 consumes the electric power generated from the permanent magnet generator 100 (S320) .
  • the resistor 200 consumes the electric power generated by the permanent magnet generator 100 when the user rotates the rotor.
  • the LED emits light during the user exercises.
  • the exercise amount of the user is increased, the amount of the electric power generated by the permanent magnet generator becomes larger, and thus the LED emits more bright light. Consequently, the user knows his/her exercise amount on the basis of the intensity of light emitted from the LED.
  • the on/off ratio of the circuit including the permanent magnet generator 100 and the resistor 200 is determined
  • the intensity of the magnetic field generated by the electric current flowing in the circuit including the permanent magnet generator 100 and the resistor 200 is detected (S350) .
  • the electric current flows in the circuit based on the electric power generated by the permanent magnet generator 100, and the magnetic field is generated around the circuit through the electromagnetic induction. At this time, the generated magnetic field is detected.
  • the exercise amount of the user operating the rotary type training machine is calculated based on the intensity of the detected magnetic field (S360) , and the calculated exercise amount is displayed (S370) . Since the intensity of the detected magnetic field is in proportion to the exercise amount of the user operating the rotary type training machine, the exercise amount of the user can be calculated based on the intensity of the magnetic field, and the calculated exercise amount is displayed to allow the user to confirm his/her exercise amount.
  • the load control method can reduce the volume and weight of the rotary type training machine, linearly control the magnitude of the load of the rotary type training machine, easily control the exercise load by the user of the rotary type training machine or a personal computer to simulate an actual outdoor exercise, and easily measure the exercise amount of the user operating the rotary type training machine.
  • the present invention can reduce the volume and weight of the rotary type training machine, linearly control the magnitude of the load of the rotary type training machine, easily control the exercise load by the user of the rotary type training machine or a personal computer to simulate an actual outdoor exercise, and easily measure the exercise amount of the user operating the rotary type training machine.

Abstract

An apparatus and method for controlling an exercise load of a rotary type training machine, such as a health cycle and an elliptical machine, is provided, which can control the exercise load of the rotary type training machine by performing an on/off switching of a circuit including a permanent magnet generator and a resistor.

Description

APPARATUS AND METHOD FOR CONTROLLING LOAD OF ROTATIONAL
SPORTING GOODS
Technical Field
The present invention relates to an apparatus and method for controlling an exercise load of rotary sporting goods such as a cycle for fitness and an elliptical machine, and more particularly, to an apparatus and method for controlling an exercise load of a rotary type training machine through an on/off switching control of a circuit composed of a permanent magnet generator and a resistor.
Background Art Training machines for health promotion are generally classified into four types, that is, a weight type using gravity, a hydraulic cylinder type using resistance of fluidic viscosity, a brake type applying a frictional force to a rotation wheel, and a magnetic type generating induced current by approaching a magnetic substance to a rotating conductor.
A training machine of weight type is hardly used as a load in exercises except for weight and resistance training. The training machine of weight type is inconvenient to use it in a narrow space, since it is heavy. In addition, the training machine of weight type can adjust a degree of strength in load step by step, so that it is not possible to continuously adjust the degree of strength.
A training machine of hydraulic cylinder type is light and small because of its simple principle. However, it is difficult for a user to easily adjust the training load.
A training machine of brake type has the durability lower than other types, and generates noise and dust. Also, since a static frictional force is larger than a kinetic frictional force, it is difficult to simulate actual exercise.
Finally, a training machine of magnetic type employs a heavy flywheel to obtain sufficient load from an induced current. Therefore, the weight of the appliance is increased, and the maximum load to be applied to a user is relatively low.
In addition, with the above-described training machines, it is difficult to control the degree of load using a computer and to transmit information on the exercise of user to the computer interactively. A device such as a mechanical actuator should be added to control the load, and additional sensors should be added to obtain the information on the exercise of a user.
Disclosure of the Invention
Therefore, the present invention has been made in view of the above-mentioned problems.
An object of the present invention is to provide an apparatus and method for controlling a load of rotary type training machine which can reduce the volume and weight of the rotary type training machine, linearly control a magnitude of the load of the rotary type training machine, easily control an exercise load by a user of the rotary type training machine or a personal computer to simulate actual outdoor exercise, and easily measure an exercise amount of the user operating the rotary type training machine.
According to an aspect of the present invention, there is provided an apparatus for controlling an exercise load of a rotary type training machine, which includes a permanent magnet generator, coupled to a rotor of the rotary type training machine, for generating an electric power using electromagnetic induction produced when the rotor is rotated; a resistor adapted to consume the electric power generated by the permanent magnet generator; a switching circuit unit for performing an on/off switching of a circuit including the permanent magnet generator and the resistor; and a switching circuit control unit for adjusting an on/off ratio of the switching circuit unit.
According another aspect of the present invention, there is provided a method for controlling an exercise load of a rotary type training machine, which includes the steps of generating an electric power by using a permanent magnet generator coupled to a rotor of the rotary type training machine based on electromagnetic induction produced when the rotor is rotated; consuming the electric power generated by the permanent magnet generator using a resistor; determining an on/off ratio of a circuit including the permanent magnet generator and the resistor; and performing an on/off switching of the circuit including the permanent magnet generator and the resistor in accordance with the determined on/off ratio.
Brief Description of the Drawings The foregoing and other objects, features and advantages of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which:
FIG. 1 is a block diagram illustrating the construction of a load control apparatus according to an embodiment of the present invention;
FIG. 2 is a circuit diagram illustrating the construction of a switching circuit unit and a switching circuit control unit in a load control apparatus according to an embodiment of the present invention; and
FIG. 3 is a flowchart explaining a load control method according to an embodiment of the present invention. Best Mode for Carrying Out the Invention
Before describing the embodiment of the present invention, a principle of controlling load of a rotary type training machine according to the present invention will now be described.
In a circuit composed of a permanent magnet generator, a resistor, and a switch, which are connected in series, if the permanent magnet generator is operated after the switch is turned on to form a closed circuit, a great load is applied to the rotary type training machine. By contrast, if the permanent magnet generator is operated after the switch is turned off to form an open circuit, a load is not applied to the rotary type training machine since the circuit becomes a circuit with no resistor consuming energy. Accordingly, it is possible to linearly control the degree of load required to rotate the permanent magnet generator at predetermined revolutions through adjustment of an on/off ratio of the switch. In this instance, if the number of on/off operations is above 100 times per second, the user cannot feel variation of the load. The present invention controls the load of the rotary type training machine using the above principle.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The aspects and features of the present invention and methods for achieving the aspects and features will be apparent by referring to the embodiments to be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed hereinafter, but can be implemented in diverse forms. In the entire description of the present invention, the same drawing reference numerals are used for the same elements across various figures. In the entire description of the present invention, the term "connected to" or "coupled to" that is used to designate a connection or coupling of one element to another element includes both a case that an element is "directly connected or coupled to" another element and a case that an element is "electrically connected or coupled to" another element via still another element. In this case, the term "directly connected to" or "directly coupled to" means that an element is connected or coupled to another element without intervention of any other element. Also, the term "comprises" and/or "comprising" used in the description means that one or more other components, steps, operation and/or existence or addition of elements are not excluded in addition to the described components, steps, operation and/or elements. A load control apparatus according to an embodiment of the present invention will now be described in detail with reference to FIG. 1.
The load control apparatus includes a permanent magnet generator 100, a resistor 200, a switching circuit unit 300, and a switching circuit control unit 400. The load control apparatus may include a hall sensor 500 and an exercise amount calculation unit 600.
The permanent magnet generator 100 is coupled to a rotor of the rotary type training machine to generate an electric power through electromagnetic induction produced when the rotor is rotated. In the case where a user operates the rotary type training machine, the rotor of the rotary type training machine is rotated by the exercise of the user, and thus the permanent magnet generator coupled to the rotor generates the electric power through the electromagnetic induction.
The resistor 200 is adapted to consume the electric power generated by the permanent magnet generator 100. That is, the resistor 200 consumes the electric power generated by the permanent magnet generator 100 while the user rotates the rotor of the permanent magnet generator 100. By controlling the amount of power being consumed in the resistor 200 through the switching of the circuit, the load of the training machine connected to the permanent magnet generator 100 can be controlled. The resistor 200 may be a light emitting element, such as an LED, a lamp, or the like, or a heating element. In the case of using the light emitting element, the light emitting element emits light during the exercise of the user. If an exercise amount of the user is increased, the amount of power generated by the permanent magnet generator 100 becomes larger, so that brighter light is emitted. Consequently, the user can intuitively recognize his/her exercise amount based on the intensity of the light emitted from the light emitting element.
The switching circuit unit 300 is adapted to perform an on/off switching of the circuit including the permanent magnet generator 100 and the resistor 200. The switching circuit unit 300 may include an SCR (Silicon-Controlled Rectifier Thyristor) , an FET (Field Effect Transistor) or a transistor. The switching circuit control unit 400 is adapted to adjust the on/off ratio of the switching circuit unit 300.
The switching circuit control unit 400 determines the on/off ratio of the switching circuit unit 300 to control the load of the training machine, and drives the switching circuit unit 300 in accordance with the determined on/off ratio. The switching circuit unit 300 performs the on/off switching of the circuit in accordance with the on/off ratio adjusted by the switching circuit control unit 400. By connecting the switching circuit control unit 400 with a digital device, such as a PC, a PDA or a mobile terminal, the switching circuit control unit 400 can adjust the on/off ratio on the basis of the signal output from the digital device. The switching circuit unit 300 and the switching circuit control unit 400 according to the present invention will now be described in detail with reference to FIG. 2. The switching circuit unit 300 includes a 3-pole thyristor 320 and a DIAC (Diode AC Switch) 310, and the switching circuit control unit 400 includes a variable resistor 410 and a capacitor 420.
The 3-pole thyristor 320 is adapted to perform an on/off switching of the circuit including the permanent magnet generator 100 and the resistor 200. In the embodiment of the present invention, a TRIAC (Triode AC Switch) is used as the 3-pole thyristor. However, alternatively, an SCR may be used as the 3-pole thyristor.
The DIAC 310 is adapted to control the on/off switching of the 3-pole thyristor 320 in accordance with a voltage at both terminals of the variable resistor 410.
The variable resistor 410 is adapted to determine the on/off ratio by adjusting the level and the phase of the voltage for triggering the DIAC 310. The variable resistor 410 includes an analog type resistor or a digital type resistor such as an electronic volume.
The capacitor 420 is connected in series with the variable resistor 410 to form an RC circuit.
The operation of the switching circuit unit 300 and the switching circuit control unit 400 will now be described in detail on the assumption that the resistance value of the variable resistor 410 is classified into "highest", "high",
"middle", "low", and "lowest" values.
If the resistance value of the variable resistor 410 is "highest", the voltage VR at both terminals of the variable resistor 410 becomes highest, and the trigger voltage V0 becomes lowest. Accordingly, the DIAC 310 does not reach the trigger level, and thus the 3-pole thyristor 320 is not turned on. In this case, since the whole circuit is in an off state and no energy is consumed in the resistor 200, the user cannot feel a load, except for the load generated due to a mechanical friction.
If the resistance value of the variable resistor 410 is "high", the voltage VR at both terminals of the variable resistor 410 becomes high, and the trigger voltage Vc becomes low. Accordingly, the time for the DIAC 310 to reach the trigger level is delayed, and thus the turn-on time of the three-pole thyristor 320 becomes shorter than the turn-off time thereof. Consequently, the turn-on time of the whole circuit becomes shorter than the turn-off time thereof, and a small amount of energy is consumed in the resistor 220, so that the user feels a weak exercise load.
If the resistance value of the variable resistor 410 is "middle", the voltage VR at both terminals of the variable resistor 410 becomes middle, and the trigger voltage Vc also becomes middle. Accordingly, the DIAC 310 is triggered at a middle speed, and thus the turn-on time of the three-pole thyristor 320 becomes equal to the turn-off time thereof. Consequently, the turn-on time of the whole circuit becomes equal to the turn-off time thereof, and a middle amount of energy is consumed in the resistor 220, so that the user feels a miidle exercise load.
If the resistance value of the variable resistor 410 is "low", the voltage VR at both terminals of the variable resistor 410 becomes low, and the trigger voltage Vc becomes high. Accordingly, the DIAC 310 is triggered at a high speed, and thus the turn-on time of the three-pole thyristor 320 becomes larger than the turn-off time thereof. Consequently, the turn-on time of the whole circuit becomes longer than the turn-off time thereof, and a large amount of energy is consumed in the resistor 220, so that the user feels a great exercise load. If the resistance value of the variable resistor 410 is "lowest", the voltage VR at both terminals of the variable resistor 410 becomes lowest, and the trigger voltage Vc becomes highest. Accordingly, the DIAC 310 is always in a triggered state, and thus the 3-pole thyristor 320 is always in an on state. In this case, since the whole circuit is always a closed circuit and maximum energy is consumed in the resistor 200, the user cannot feel the greatest exercise load.
Referring again to FIG. 2, the hall sensor 500 and the exercise amount calculation unit 600 will now be described.
The hall sensor 500 is adapted to detect an intensity of the magnetic field generated by the electric current flowing in the circuit including the permanent magnet generator 100 and the resistor 200, and a magnetic field is formed around the circuit due to the electromagnetic induction. At this time, the hall sensor 500 detects the generated magnetic field.
The exercise amount calculation unit 600 calculates and displays the exercise amount of the user who operates the rotary type training machine based on the intensity of the magnetic field detected by the hall sensor 500. The intensity of the magnetic field detected by the hall sensor 500 is in proportion to the exercise amount of the user who operates the rotary type training machine. Consequently, the exercise amount calculation unit 600 calculates the exercise amount of the user based on the intensity of the magnetic field, and displays the result of calculation to allow the user to confirm his/her exercise amount.
According to the load control apparatus according to an embodiment of the present invention, it can reduce the volume and weight of the rotary type training machine, linearly control the magnitude of the load of the rotary type training machine, easily control the exercise load by the user of the rotary type training machine or a personal computer to simulate actual outdoor exercise, and easily measure the exercise amount of the user operating the rotary type training machine. The load control method according an embodiment of the present invention will now be described in detail with reference to FIG. 3.
Firstly, the permanent magnet generator 100 coupled to the rotor of the rotary type training machine generates the electric power based on the electromagnetic induction produced when the rotor is rotated (S310) . When the user operates the rotary type training machine, the rotor of the rotary type training machine is rotated by the exercise of the user, and the permanent magnet generator coupled to the rotor generates the electric power using the electromagnetic induction.
The resistor 200 consumes the electric power generated from the permanent magnet generator 100 (S320) . The resistor 200 consumes the electric power generated by the permanent magnet generator 100 when the user rotates the rotor. In the case where an LED is used as the resistor 200, the LED emits light during the user exercises. In the case where the exercise amount of the user is increased, the amount of the electric power generated by the permanent magnet generator becomes larger, and thus the LED emits more bright light. Consequently, the user knows his/her exercise amount on the basis of the intensity of light emitted from the LED.
The on/off ratio of the circuit including the permanent magnet generator 100 and the resistor 200 is determined
(S330) , and then the circuit including the permanent magnet generator 100 and the resistor 200 is switched on/off in accordance with the determined on/off ratio (S340) .
The intensity of the magnetic field generated by the electric current flowing in the circuit including the permanent magnet generator 100 and the resistor 200 is detected (S350) . The electric current flows in the circuit based on the electric power generated by the permanent magnet generator 100, and the magnetic field is generated around the circuit through the electromagnetic induction. At this time, the generated magnetic field is detected.
The exercise amount of the user operating the rotary type training machine is calculated based on the intensity of the detected magnetic field (S360) , and the calculated exercise amount is displayed (S370) . Since the intensity of the detected magnetic field is in proportion to the exercise amount of the user operating the rotary type training machine, the exercise amount of the user can be calculated based on the intensity of the magnetic field, and the calculated exercise amount is displayed to allow the user to confirm his/her exercise amount.
According to the load control method according to an embodiment of the present invention, it can reduce the volume and weight of the rotary type training machine, linearly control the magnitude of the load of the rotary type training machine, easily control the exercise load by the user of the rotary type training machine or a personal computer to simulate an actual outdoor exercise, and easily measure the exercise amount of the user operating the rotary type training machine.
While this invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiment and the drawings. On the contrary, it is intended to cover various modifications and variations within the spirit and scope of the appended claims. Industrial Applicability
As can be seen from the foregoing, the present invention can reduce the volume and weight of the rotary type training machine, linearly control the magnitude of the load of the rotary type training machine, easily control the exercise load by the user of the rotary type training machine or a personal computer to simulate an actual outdoor exercise, and easily measure the exercise amount of the user operating the rotary type training machine.

Claims

Claims
1. An apparatus for controlling an exercise load of a rotary type training machine, comprising: a permanent magnet generator, coupled to a rotor of the rotary type training machine, for generating an electric power using electromagnetic induction produced when the rotor is rotated; a resistor adapted to consume the electric power generated by the permanent magnet generator; a switching circuit unit for performing an on/off switching of a circuit including the permanent magnet generator and the resistor; and a switching circuit control unit for adjusting an on/off ratio of the switching circuit unit.
2. The apparatus as claimed in claim 1, wherein the switching circuit unit comprises any one of a thyristor, an FET, and a transistor.
3. The apparatus as claimed in claim 1, further comprising a hall sensor for detecting an intensity of a magnetic field generated by an electric current flowing in the circuit including the permanent magnet generator and the resistor.
4. The apparatus as claimed in claim 1, wherein the switching control unit comprises a variable resistor for adjusting a level and phase to trigger a DIAC, and a capacitor connected in series to the variable resistor to form an RC circuit; and wherein the switching circuit unit comprises a 3-pole thyristor for performing an on/off switching of the circuit including the permanent magnet generator and the resistor, and a DIAC for controlling an on/off switching of the 3-pole thyristor in accordance with a voltage at both terminals of the variable resistor.
5. The apparatus as claimed in claim 4, wherein the variable resistor is an electronic volume.
6. The apparatus as claimed in claim 5, wherein the electronic volume is connected to a digital device to adjust the resistance value of the resistor.
7. The apparatus as claimed in claim 1, wherein the resistor comprises any one of an LED and a lamp.
8. The apparatus as claimed in claim 3, further comprising an exercise amount calculation unit for calculating an exercise amount of a user who operates the rotary type training machine based on the intensity of the magnetic field detected by the hall sensor, and displaying the calculated exercise amount.
9. The apparatus as claimed in claim 1, wherein the rotary type training machine is any one of a cycle for fitness and an elliptical machine.
10. A method for controlling an exercise load of a rotary type training machine, comprising the steps of: generating an electric power by using a permanent magnet generator coupled to a rotor of the rotary type training machine based on electromagnetic induction produced when the rotor is rotated; consuming the electric power generated by the permanent magnet generator using a resistor; determining an on/off ratio of a circuit including the permanent magnet generator and the resistor; and performing an on/off switching of the circuit including the permanent magnet generator and the resistor in accordance with the determined on/off ratio.
11. The method as claimed in claim 10, further comprising the step of detecting an intensity of a magnetic field generated by an electric current flowing in the circuit including the permanent magnet generator and the resistor.
12. The method as claimed in claim 11, further comprising the steps of calculating an exercise amount of a user who operates the rotary type training machine based on the intensity of the magnetic field detected by a hall sensor, and displaying the calculated exercise amount.
13. The method as claimed in claim 10, wherein the resistor is any one of an LED and a lamp.
14. The method as claimed in claim 10, wherein the rotary type training machine is any one of a health cycle and an elliptical machine.
PCT/KR2008/002413 2007-05-04 2008-04-29 Apparatus and method for controlling load of rotational sporting goods WO2008136588A1 (en)

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KR1020070043547A KR100865810B1 (en) 2007-05-04 2007-05-04 Apparatus and method for controlling load of rotational sporting goods

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US11711035B2 (en) 2018-04-08 2023-07-25 Kompan A/S Exercise machine with a variable load provided by an electric motor

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Publication number Priority date Publication date Assignee Title
KR102271943B1 (en) 2019-11-12 2021-07-02 백범준 Prefabricated body exercise device

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JP2000116816A (en) * 1998-10-16 2000-04-25 Senoh Corp Load control device of cordless ergometer
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US5310392A (en) * 1993-07-27 1994-05-10 Johnson Metal Industries Co., Ltd. Magnet-type resistance generator for an exercise apparatus
JP2000116816A (en) * 1998-10-16 2000-04-25 Senoh Corp Load control device of cordless ergometer
KR20020063770A (en) * 2001-01-30 2002-08-05 글로벌에너지텍주식회사 A bicycle sports equipment using an electric generator

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Publication number Priority date Publication date Assignee Title
US11711035B2 (en) 2018-04-08 2023-07-25 Kompan A/S Exercise machine with a variable load provided by an electric motor

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