WO2023058864A1

WO2023058864A1 - Control method of exercise device using cable

Info

Publication number: WO2023058864A1
Application number: PCT/KR2022/010900
Authority: WO
Inventors: Jaehoon Lee
Original assignee: Lg Electronics Inc.
Priority date: 2021-10-07
Filing date: 2022-07-25
Publication date: 2023-04-13

Abstract

A control method of an exercise device using cable is proposed. The control method of an exercise device according to the present disclosure may include a posture detection step at which whether posture is incorrect is detected. Additionally, the control method of an exercise device according to the present disclosure may include a load decrease step at which an exercise load is decreased when incorrect posture is detected at the posture detection step. Accordingly, it is possible to prevent the occurrence of accidents by detecting that a user's posture is incorrect.

Description

CONTROL METHOD OF EXERCISE DEVICE USING CABLE

The present disclosure relates generally to an exercise device using cable and, more particularly, to a control method of an exercise device using cable in which an exercise load is transmitted through the cable such that exercise can be performed.

In general, an exercise device used for increasing muscular strength is designed to repeat muscle relaxation and contraction while a lever connected to a weight of a predetermined unit of weight is pushed or pulled.

Among such exercise devices, there are various types of exercise devices, such as an arm curl machine for biceps exercises, a chest press or butterfly machine for exercises for chest, such as pectoralis major, and a pull-up device for a muscle exercise.

Recently, as part of self-management, a home workout, which is exercise for health management at home which is my own resting place without jogging or visiting a fitness center has become an issue. In response to this issue, various types of exercise devices for a home workout have been proposed, and a new phrase called a home workout group has been created.

Among exercise devices for a home workout, an exercise device using cable is widely used. The exercise device includes a drive motor and a differential gear provided therein, and an exercise load supplied through the drive motor and the differential gear is transmitted through the cable to a user, and accordingly, a user exercises while pulling the cable.

Accordingly, in case of the exercise device using cable, when the exercise load transmitted through the cable is actively controlled according to a user's exercise situation, it is preferable for exercise efficiency and safety.

The present disclosure is intended to propose a control method of an exercise device using cable in which active control is performed according to a user's exercise situation.

The present disclosure is further intended to propose a control method of an exercise device using cable in which in an initial stage in which the exercise device is used, it is possible to detect a user's incorrect posture and take measures accordingly.

The present disclosure is still further intended to propose a control method of an exercise device using cable in which safe measures can be taken in the event of an emergency during the use of the exercise device.

The present disclosure is still further intended to propose a control method of an exercise device using cable in which exercise efficiency can be increased.

A control method of an exercise device using cable according to an embodiment of the present disclosure may include a posture detection step at which whether posture is incorrect is detected.

The control method of an exercise device according to the present disclosure may include a load decrease step at which an exercise load is decreased when incorrect posture is detected in the posture detection step.

The control method of an exercise device according to the embodiment of the present disclosure may include a load input step at which a target load is input. Additionally, the control method of an exercise device may include a load increase step at which an exercise load is increased in such a manner that the target load is transmitted through the cable.

Here, the posture detection step may be performed in the process of load increase in the load increase step.

According to the embodiment of the present disclosure, the posture detection step may include a speed detection step. In the speed detection step, the speed of movement of cable may be detected.

According to the embodiment of the present disclosure, the posture detection step may include an incorrect-posture determination step. At the incorrect-posture determination step, it may be determined that posture is incorrect when the speed of movement of the cable exceeds a preset threshold speed.

According to another embodiment of the preset disclosure, the posture detection step may include a position detection step. Here, at the position detection step, the present position of cable may be detected.

In another embodiment of the present disclosure, at the incorrect-posture determination step, it may be determined that a user's posture is incorrect when a distance between the present position and initial position of the cable exceeds a preset threshold distance.

According to the embodiment of the present disclosure, at the load decrease step, the exercise load may be reduced to a pre-registered basic load.

The control method of an exercise device according to the embodiment of the present disclosure may further include an initial detection step. At the initial detection step, it may be detected whether the position of the cable is moved to the initial position of the cable for exercise.

As an embodiment, the load increase step may be performed after the movement of the cable to the initial position of the cable for exercise is detected.

In the embodiment of the present disclosure, a guide alarm may be output to induce posture correction when incorrect posture is detected at the posture detection step.

The control method of an exercise device according to the present disclosure may further include a pull detection step. At the pull detection step, in a process in which exercise is performed in a state in which the exercise load transmitted through the cable reaches the target load, pulling speed at which the cable is pulled from a user may be detected.

As an embodiment, when the pulling speed exceeds preset dangerous speed, damping force applied when winding the cable may be increased.

In the embodiment of the present disclosure, the dangerous speed may be preset in inverse proportion to the target load.

In the embodiment of the present disclosure, the damping force may be adjusted in proportion to the target load.

The control method of an exercise device according to the present disclosure may further include the position detection step. At the position detection step, in the process in which exercise is performed in the state in which the exercise load transmitted through the cable reaches the target load, a final position to which a user pulls the cable may be detected.

In the embodiment, when the final position is decreased, the exercise load transmitted to the cable may be decreased from the target load.

In the embodiment, when the final position continuously decreases a preset number of times or more, the target load may be decreased.

In the embodiment, the exercise load may be decreased in proportion to the rate of the decrease of a final position.

The control method of an exercise device using cable according to the present disclosure may have one or more of the following effects.

First, active control may be performed according to a user's exercise situation.

Second, in the process of a user taking a posture at the beginning of exercise, a user's incorrect posture may be detected through the speed of cable or the position of cable, thereby preventing accidents.

Third, when a user's posture is incorrect, a situation in which the incorrect posture can be corrected may be provided, thereby enabling more effective exercise preparation.

Fourth, an emergency situation such as a situation in which a user misses a grip bar or a grip connected to cable or does not withstand an exercise load during exercise may be detected through the speed of cable, thereby preventing accidents.

Fifth, a user's exercise ability may be identified through the position of cable, and an exercise load may be adjusted according to a user's exercise ability, thereby improving exercise efficiency.

FIG. 1 is a view illustrating an example of an exercise situation in which exercise device using cable is used according to an embodiment of the present disclosure.

FIG. 2 is a control block diagram of the exercise device using cable according to the embodiment of the present disclosure.

FIG 3 is a control flowchart illustrating an example of the control method of the exercise device using cable according to the embodiment of the present disclosure.

FIGS. 4(a), 4(b), 4(c), 5(a), 5(b), and 5(c) are graphs for illustrating the control method of FIG. 3.

FIG. 6 is a control flowchart illustrating another example of the control method of the exercise device using cable according to the embodiment of the present disclosure.

FIGS. 7(a), 7(b), and 8 are graphs for illustrating the control method of FIG. 6.

The present disclosure relates to a control method of an exercise device using cable, and the control method may include a load input step at which a target load is input, a load increase step at which an exercise load is increased in such a manner that the target load is transmitted through the cable, a posture detection step at which whether posture is incorrect is detected in the process of increasing the exercise load at the load increase step, and a load decrease step at which the exercise load is decreased when a user's incorrect posture is detected at the posture detection step.

FIG. 1 is a view illustrating an example of an exercise situation in which an exercise device 10 using cable 120 is used according to an embodiment of the present disclosure.

In the embodiment illustrated in FIG. 1, the exercise device 10 on which a user climbs to exercise while the exercise device 10 is seated on a floor indoors or outdoors is an exercise device 10 in the form of a mat. In addition, like the exercise device 10 in which the cable 120 is pulled out forward therefrom while the exercise device 10 is mounted on a wall, other types of exercise devices 10 using the cable 120 may also be included in the technical idea of the present disclosure.

As illustrated in FIG. 1, the exercise device 10 according to the embodiment of the present disclosure may include a device body 110 and the cable 120.

The device body 110 may constitute the entire exterior of the exercise device 10. In addition, the cable 120 may extend from the inside of the device body 110 to the outside thereof and may transmit an exercise load provided by a drive module 210 to be described later.

In the embodiment of the present disclosure, the cable 120 is pulled out from each of opposite sides of the device body 110 in a longitudinal direction thereof, but the technical idea of the present disclosure is not limited thereto.

A gripping structure which a user grips to exercise may be connected to the cable 120. FIG. 1 illustrates a grip bar 130 installed such that the cable 120 is connected to each of opposite ends of the grip bar 130. Alternatively, a grip such as a D-grip may be connected to the cable 120 of each of opposite sides, and of course, various types of gripping structures for exercise may be connected to the cable 120.

FIG. 2 is a control block diagram of the exercise device 10 using the cable 120 according to the embodiment of the present disclosure.

Referring to FIG. 2, the exercise device 10 according to the embodiment of the present disclosure may include the drive module 210.

The drive module 210 according to the embodiment of the present disclosure may generate an exercise load to be transmitted through the cable 120. In the embodiment of the present disclosure, the drive module 210 may include a drive motor 211. The drive motor 211 according to the embodiment of the present disclosure may be installed inside the device body 110 and may rotate to supply an exercise load.

The drive module 210 according to the embodiment of the present disclosure may further include other components in addition to the drive motor 211. For example, the drive module 210 may include a differential gear installed inside the device body 110 such that the differential gear can rotate in cooperation with the drive motor 211. Additionally, the drive module 210 may include a bobbin for transmitting the rotational force of the drive motor 211 to the cable 120 extending from each of the opposite sides of the device body.

The exercise device 10 according to the embodiment of the present disclosure may include an exercise state detection part 220. The exercise state detection part 220 may detect whether a user's posture is incorrect during exercise preparation or an emergency situation occurs during exercise.

In the embodiment of the present disclosure, the exercise state detection part 220 may include at least one of a speed detection part 221 and a position detection part 222.

The speed detection part 221 according to the embodiment of the present disclosure may detect the speed of the cable 120. For example, the speed detection part 221 may detect speed at which the cable 120 is pulled out from the device body 110, that is, speed at which a user pulls the cable 120. For another example, the speed detection part 221 may detect speed at which the cable 120 is drawn into the device body 110, that is, speed at which the drive module 210 pulls the cable 120.

The position detection part 222 according to the embodiment of the present disclosure may detect the position of the cable 120. The position detection part 222 may detect the position of the cable 120 when a user pulls the cable 120 or the drive module 210 pulls the cable 120 and the position of the cable 120 changes.

Here, the speed and position of the cable 120 may be detected through the cable 120 pulled out from or drawn into the drive module 210. Alternatively, the speed and position of the cable 120 may be detected by detecting the rotation of the drive motor 211 or the differential gear. The method of detecting the speed and position of the cable 120 may be applied in various ways.

The exercise device 10 according to the embodiment of the present disclosure may include a device control part 230. The device control part 230 may control the overall operation of the exercise device 10. The device control part 230 may include hardware such as a processor and software such as firmware.

Here, in the embodiment of the present disclosure, for example, the device control part 230 performs an active control process according to an exercise situation through a control method to be described later, and this will be described in detail later.

The exercise device 10 according to the embodiment of the present disclosure may include an input part 240. For example, the input part 240 may be formed on the outer part of the device body 110. The input part 240 may be provided in the form of a button on the outer part of the device body 110 or in the touch screen method of a display on which an image is displayed.

For another example, the input part 240 may be embodied as a mobile phone such as a smart phone. The mobile phone may be connected to a radio communication part (not shown) provided in the device body 110. Of course, various types of mobile devices other than the mobile phone may be applied as the input part 240.

For example, a user may input a target load through the input part 240. The device control part 230 may control the drive module 210 such that the target load input through the input part 240 is provided through the cable 120.

The exercise device 10 according to the embodiment of the present disclosure may include an alarm output part 250. For example, the alarm output part 250 may include a speaker. The device control part 230 may provide various types of information to a user through the speaker.

For another example, the alarm output part 250 may include the display described above. The device control part 230 may provide information on a user's exercise state, etc. through the display.

For still another example, the alarm output part 250 may include a lamp such that the lamp is blinked or lighting color thereof is changed by the device control part 230. The device control part 230 may control the lamp according to a user's exercise situation. For example, the device control part 230 may control the lamp to emit green or blue light while a user exercises normally, but may control the lamp to emit red light while a user does not exercise normally.

Hereinafter, the control method of the exercise device 10 according to the embodiment of the present disclosure will be described in detail with reference to FIG. 3.

First, a user may input a target load, which is an exercise load that the user wants to exercise, through the input part 240 at S31. The device control part 230 may control the drive module 210 such that the exercise load reaches the target load input through the input part 240.

In the embodiment of the present disclosure, after recognizing the initial position of the cable for exercise at S32, the device control part 230 may control the drive module 210 such that the exercise load gradually increases at S33 and finally reaches the target load.

For example, a state in which the cable 120 is pulled by a predetermined length by a user and is moved to a predetermined position may be recognized as the cable being at the initial position. For another example, a case in which the cable is maintained for a predetermined period of time while being pulled by a predetermined length may be recognized as the cable being at the initial position.

FIGS. 4(a), 4(b), and 4(c) are graphs of the speed V (hereinafter, the same) of the cable 120, the position P (hereinafter, the same) of the cable 120, and the exercise load L (hereinafter, the same), respectively, appearing in a normal situation in the control method of the exercise device 10 according to the embodiment of the present disclosure.

Referring to FIG. 4(a), when a user pulls the cable 120 at time t_Sand the cable 120 is moved to the initial position at time t_P, as illustrated in FIG. 4(a), the speed of the cable 120 may gradually increase and when the cable 120 reaches the initial position, the speed of the cable 120 may decrease to be maintained.

As illustrated in FIG. 4(b), while a user pulls the cable 120, the cable 120 may extend, and at time t_Pat which the cable 120 reaches the initial position, a predetermined position of the cable 120 may be maintained.

In the embodiment of the present disclosure, as illustrated in FIG. 4(c), the device control part 230 may control the drive module 210 such that the exercise load is gradually increased from time t_L at which a predetermined period of time elapses after a user pulls the cable 120 at time t_S and reaches the target load L_R.

In FIG. 4(c), time t_Lat which the device control part 230 starts increasing the exercise load may be time at which a predetermined period of time elapses from time t_S at which the movement of the cable to the initial position starts. On the other hand, as described above, after recognizing that the cable is located at the initial position, the device control part 230 may increase the exercise load. For another example, the device control part 230 may be configured to gradually increase the exercise load even before the cable is located at the initial position. That is, the device control part 230 may be provided to gradually increase the exercise load before and after time t_P at which the cable abruptly reaches the initial position while the target load is not applied in a process in which a user moves the cable 120 to the initial position.

In the embodiment of the present disclosure, the device control part 230 provides a basic load L_I as the initial value of the exercise load. As illustrated in FIG. 4(c), the basic load is not 0 but is a load provided basically by the drive module 210. That is, the basic load is an exercise load which is basically provided even if a user does not input a target load into the exercise device 10.

FIGS. 5(a), 5(b), and 5(c) respectively are graphs of the speed of the cable 120, the position of the cable 120, and the exercise load appearing when a user's posture is incorrect in the control method of the exercise device 10 according to the embodiment of the present disclosure.

While a user takes an initial exercise posture, his or her posture may be incorrect due to his or her own fault. For example, in a case in which a target load input by a user is higher than a load at which a user thinks he or she can exercise, or in a case in which a target load is incorrectly input and is preset high, in a process in which an exercise load increasing to the target load, a user may not withstand the exercise load and the user's posture may be incorrect.

In this case, as illustrated in FIG. 5(a), after the cable 120 is moved to the initial position, the speed of the cable 120 is constantly maintained close to † and rises suddenly in response to a user's posture being incorrect at time t_d1.

As illustrated in FIG. 5(b), after the position of the cable 120 is also moved to the initial position and is maintained, the cable 120 is abruptly moved to a position to which the cable 120 is pulled toward the device body 110 in response to a user's posture being incorrect at time t_d1.

In the control method of the exercise device 10 according to the embodiment of the present disclosure, for an example, the device body 110 may detect that a user's posture is incorrect and may actively control an exercise load.

Referring to FIG. 3, in the process of increasing the exercise load at S33, the exercise state detection part 220 may detect whether a user's posture is incorrect. In FIG. 3, it is illustrated that whether a user's posture is incorrect is determined by detecting the moving speed of the cable 120 by the speed detection part 221. For another example, whether a user's posture is incorrect may be determined by detecting the position of the cable 120 by the position detection part 222.

Here, as illustrated in FIG. 5(a), when the moving speed V_S of the cable 120 detected by the speed detection part 221 exceeds a preset threshold speed V_R at time t_d2 at S35 after a user's posture is incorrect at time t_d1, the device control part 230 may determine that the incorrect posture is detected.

For another example, in a case in which the cable 120 is used at the present position, when a distance between the present position of the cable 120 and the initial position thereof exceeds a preset threshold distance P_R at time t_d2 after a user's posture is incorrect at time t_d1, the device control part 230 may determine that a user's posture is incorrect.

Here, when the incorrect posture is detected, the device control part 230 may control the drive module 210 such that the exercise load is decreased at S36. According to the present disclosure, for an example, when the incorrect posture is detected at time t_d2,the device control part 230 reduces a load being provided as the target load L_R to the basic load L_I as illustrated in FIG. 5(c).

In the embodiment of the present disclosure, after the device control part 230 reduces the exercise load, an alarm part may output a posture maintenance alarm at S37. For example, a posture maintenance alarm, such as Please correct your posture! and Is weight too heavy?, etc. to check a user's status may be output.

Next, the process of checking whether a user's posture has been corrected, that is, whether the posture is maintained to be correct, may be performed at S38, and in the embodiment of the present disclosure, whether the posture is maintained to be correct may be determined by detecting whether the moving speed of the cable increases in a direction in which a user pulls the cable, or whether the position of the cable 120 is moved back to the initial position.

Here, when it is determined that a user's posture is not maintained to be correct at S38, the device control part 230 may output an end alarm notifying a user of the end of exercise through the alarm output part 250 at S39, and may end the process of the exercise. On the other hand, when it is recognized that a user's posture is maintained to be correct, the device control part 230 may increase the exercise load at S33 so as to perform the process in which the exercise load reaches the target load.

Meanwhile, for example, when the moving speed of the cable does not exceed the threshold speed at S35, the process S33 of increasing the exercise load may be performed until the exercise load reaches the target load at S40. In this case, whether the movement speed exceeds the threshold speed may be continuously determined at S34 and S35.

In addition, when the exercise load reaches the target load, an exercise preparation process may be completed at S41, and an exercise process to be described later may be performed. Here, through the alarm output part 250, the device control part 230 may inform a user that the exercise preparation process has been completed.

Hereinafter, in the control method of the exercise device 10 according to the embodiment of the present disclosure, a process in which exercise is performed while the target load is provided after the completion of the exercise preparation process as described above will be described with reference to FIG. 6.

A user may exercise by overcoming the exercise load provided as the target load while pulling the cable 120. Additionally, when a user releases the pulled cable 120, the drive module 210 may pull the cable 120, and the cable 120 may be moved to the device body 110. Accordingly, exercise may be performed while repeating the process of pulling the cable 120 and moving the same back to the device body 110.

Here, the force of the drive module 210 by which the cable is pulled to the device body 110 may be adjusted by a damping force preset in the drive module 210. When the damping force increases, the force of the drive module by which the cable 120 is pulled toward the device body 110 may decrease, and the moving speed of the cable may decrease. Contrarily, when the damping force decreases, the force of the drive module by which the cable 120 is pulled and the moving speed of the cable may increase.

In the embodiment of the present disclosure, the device control part 230 may control the damping force by adjusting a damping factor. For example, when the device control part 230 according to the embodiment of the present disclosure controls the drive motor 211 through impedance control, a system may be modeled as a mass-damper-spring system to be controlled.

In this case, force which the device control part 230 wants to simulate, that is, an exercise load, may be expressed through [Equation 1].

[Equation 1]

In [Equation 1], F_dis a simulated force, that is, an exercise load, m_refis weight, g is acceleration of gravity, a is acceleration at which the cable 120 is pulled, v is speed at which the cable 120 is pulled, J_m is the coefficient of inertia of the system, B_m is the damping coefficient of the system, and F_f is the coefficient of friction of the system.

Based on [Equation 1], the device control part 230 may increase the damping force by increasing the damping coefficient B_m so as to decrease the exercise load and decrease the speed at which the cable 120 is pulled. Contrarily, the device control part 230 may decrease the damping force by decreasing the damping coefficient B_m so as to increase the exercise load and increase the speed at which the cable 120 is pulled.

However, when a user misses the cable 120, the pulling force of the drive module 210 may be transmitted to the cable 120, and the cable 120 may be moved to the device body 110 at high speed.

As described above, since the grip bar 130 or a grip to be gripped by a user may be connected to the cable 120, the same may hit the user in a situation in which the cable 120 moves to the device body 110 at high speed.

In a different situation in which exercise is performed in the form of a bench press, when a user misses the grip bar 130, a situation in which the grip bar 130 strikes the user's neck, chest, or face may also occur.

Accordingly, in the embodiment of the present disclosure, the speed detection part 221 may detect the pulling speed at S61. In the embodiment of the present disclosure, the pulling speed V_S(hereinafter, the same) indicates speed at which the cable 120 is wound by the drive module 210 and pulled from a user.

In addition, the device control part 230 may determine whether the pulling speed exceeds preset dangerous speed V_W (hereinafter, the same) at S62. Additionally, when the device control part 230 determines that the pulling speed exceeds the dangerous speed, the damping force of the drive module 210 may be adjusted at S67 to prevent the occurrence of a dangerous situation.

FIGS. 7(a) and 7(b) illustrate the moving speed of the cable 120 while a user is exercising.

As illustrated in FIG. 7(a), the moving speed of the cable 120 moves in an approximately constant waveform according to the process of a user pulling and releasing the cable 120.

However, when a user misses a grip, the pulling speed may increase abruptly as illustrated in FIG. 7(b). In this case, when the pulling speed exceeds the dangerous speed, the device control part 230 may increase the damping force so as to decrease the pulling speed at which the cable 120 is pulled to the device body 110, thereby eliminating the risk of accidents.

Here, in the embodiment of the present disclosure, the dangerous speed is preset step by step as illustrated in FIG. 7(b. For example, when the pulling speed reaches a first dangerous speed V_W1, the damping force may be increased, and a warning alarm may be provided to a user.

In addition, when the pulling speed reaches a second dangerous speed V_W2, the damping force may be abruptly increased, or the drive module 210 may be controlled so as not to pull the cable 120.

In FIGS. 7(a) and 7(b), although it is exemplified that the dangerous speed is divided into two stages, it is possible that the dangerous speed is one stage or is divided into three stages or more such that control is performed according thereto.

Here, in the embodiment of the present disclosure, the dangerous speed is preset in inverse proportion to the target load. When the target load is preset high, force by which the drive module 210 pulls the cable 120 may increase. Accordingly, by presetting the dangerous speed relatively low, even if the cable 120 is pulled at a relatively low speed, it may be determined that it is in a dangerous situation.

In addition, for example, damping force may be adjusted in proportion to the target load. As described above, when the target load is preset high, force by which the drive module 210 pulls the cable 120 may increase, and thus when the pulling speed exceeds the dangerous speed, the damping force may be relatively greatly increased so as to decrease speed at which the cable 120 is pulled.

Meanwhile, when the exercise is continuously performed without the pulling speed exceeding the dangerous speed, the device control part 230 may actively control an exercise load provided by the drive module 210 in consideration of the user's current exercise ability.

Referring to FIG. 8, the position of the cable 120 is repeatedly moved between a first position P_S to which a user completely pulls the cable 120, and a second position P_E, to which the cable 120 moves toward the device body 110.

However, at the beginning of exercise, as in a section ①, the exercise is performed by the cable reaching, to some extent, to the first position and the second position, but as the exercise is being performed, there may be sections (sections ② and ③) in which the cable moves to the second position even before reaching the first position.

In the embodiment of the present disclosure, the position detection part 222 may detect a final position to which a user pulls the cable 120 at S63. Additionally, the device control part 230 may determine whether the final position is decreased at S64, and when the final position is decreased, an exercise load transmitted to the cable 120 may be decreased from a target load at S65.

Accordingly, when a user cannot continuously exercise with the target load preset by him/her, the exercise load may be decreased such that the exercise is continuously performed, thereby increasing exercise efficiency.

For example, when the final position continuously decreases a preset number of times or more, the device control part 230 may be preset to decrease the exercise load. That is, when a user cannot pull the cable 120 up to the existing first position a predetermined number of times, the exercise load may be decreased, thereby providing an environment in which a user can exercise with a target load preset by the user as much as possible.

Here, the rate of reduction of the exercise load from the target load may be decreased in proportion to the rate of decrease of a final position. Accordingly, the control method of the exercise device 10 according to the embodiment of the present disclosure may be actively applied to a user's current exercise state may be applied.

In addition, as illustrated in FIG. 8, when a final position is gradually decreased, the exercise load may also be gradually reduced.

Through the above process, safer and more active exercise control according to a user's exercise state may be performed, thereby providing a more efficient exercise environment.

Although embodiments of the present disclosure have been described above with reference to the accompanying drawings, the present disclosure is not limited to the above embodiments, but may be embodied in various different forms, and those skilled in the art to which the present disclosure belongs will be able to understand that the present disclosure may be embodied in other concrete forms without changing the technical spirit or essential characteristics of the present disclosure. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

10: Exercise device 110: Device body

120: Cable 130: Grip bar

210: Drive module 211: Drive motor

212: Differential gear 210: Exercise state detection part

221: Speed detection part 222: Position detection part

230: Device control part 240: Input part

250: Alarm output part

The control method of an exercise device according to the present disclosure may be applied to an exercise device using a cable indoors or outdoors, such as a mat-type exercise device.

Claims

A control method of an exercise device using cable, the control method comprising:

a load input step at which a target load is input;

a load increase step at which an exercise load is increased in such a manner that the target load is transmitted through the cable;

a posture detection step at which whether posture is incorrect is detected while the exercise load is increased at the load increase step; and

a first load decrease step at which the exercise load is decreased when incorrect posture is detected at the posture detection step.
The control method of claim 1, wherein the posture detection step comprises:

a speed detection step at which a moving speed of the cable is detected, and

an incorrect-posture determination step at which it is determined that posture is incorrect when the moving speed exceeds a preset threshold speed.
The control method of claim 1, wherein the posture detection step comprises:

a position detection step at which a present position of the cable is detected, and

an incorrect-posture determination step at which it is determined that posture is incorrect when a distance between the present position of the cable and an initial position of the cable exceeds a preset threshold distance.
The control method of claim 1, wherein at the first load decrease step, the exercise load is reduced to a pre-registered basic load.
The control method of claim 1, further comprising: an initial detection step at which whether a position of the cable is moved to an initial position of the cable for exercise is detected,

wherein the load increase step is performed after movement of the cable to the initial position of the cable for exercise is detected.
The control method of claim 1, further comprising: an alarm output step at which a guide alarm is output to induce posture correction when incorrect posture is detected at the posture detection step.
The control method of claim 1, further comprising:

a pull detection step at which pulling speed at which the cable is pulled from a user is detected in a process in which exercise is performed in a state in which the exercise load transmitted through the cable reaches the target load, and

a damping adjustment step at which damping force applied when winding the cable is increased when the pulling speed exceeds a preset dangerous speed.
The control method of claim 7, wherein the dangerous speed is preset in inverse proportion to the target load.
The control method of claim 7, wherein the damping force is adjusted in proportion to the target load.
The control method of claim 1, further comprising:

a position detection step at which a final position to which a user pulls the cable is detected in a process in which exercise is performed in a state in which the exercise load transmitted through the cable reaches the target load, and

a second load decrease step at which the exercise load transmitted to the cable is decreased from the target load when the final position decreases.
The control method of claim 10, wherein the second load decrease step is performed when the final position continuously decreases a preset number of times or more.
The control method of claim 11, wherein at the second load decrease step, the exercise load is decreased in proportion to a rate of the decrease of the final position.