Training system and load control unit

Abstract

A training system (1) comprises: a load control unit (10) for controlling a load applied to a user; a display device (20); and a management server (30). The load control unit (10) controls the magnitude of braking force and controls the load by adjusting strength of a magnetic field applied to a magnetic viscous fluid to change the viscosity of the magnetic viscous fluid. The management server (30) associates a training date and time and training content with the user and stores same. The display device (20) displays the training date and time and the training content stored in the management server (30) in association with the user.

Description

Training system and load control unit

[0001] The present invention relates to a training system and a load control unit.

[0002] Conventionally, there are training devices capable of electrically controlling a load. For example, Patent Document 1 describes a training system in which a control device controls an electric motor to control the load of a load generating device.

[0003] Japanese Patent Application Publication No. 2022-48052

[0004] In the training system of Patent Document 1, personal history, which associates personal identification data with usage data including the load on the electric motor when using the exercise equipment, is recorded on a management server.

[0005] However, the training system of Patent Document 1 does not disclose how specifically to display the training results.

[0006] An object of the present disclosure is to provide a training system and a load control unit that make it easy for users to analyze training results.

[0007] To solve the above problems, a training system according to one aspect of the present disclosure includes a load control unit that controls the load applied to a user of a training tool, a display device capable of communicating with the load control unit, and a management server capable of communicating with the display device. The load control unit controls the magnitude of the braking force and the load by adjusting the strength of a magnetic field applied to the magnetorheological fluid to change the viscosity of the magnetorheological fluid. The management server stores the date and time when the user trained using the training tool and the training content corresponding to the date and time, linking them to the user. The display device displays the date and time and the training content stored in the management server, corresponding to the user.

[0008] In order to solve the above problems, a load control unit according to one aspect of the present disclosure is a load control unit that controls the load applied to a user of a training device, and includes: a control unit that adjusts the strength of a magnetic field applied to a magnetorheological fluid to change the viscosity of the magnetorheological fluid, thereby controlling the magnitude of the braking force and thereby controlling the magnitude of the load; and a memory unit that stores the date and time when the user performed training using the training device and the training content corresponding to the date and time, linking them to the user. The control unit displays the date and time and the training content stored in the memory unit on a display device, corresponding to the user.

[0009] According to one aspect of the present disclosure, it is possible to make it easier for a user to analyze training results.

[0010] 1 is a schematic diagram showing the overall configuration of a training system according to a first embodiment of the present disclosure. FIG. 1 is a block diagram showing the configuration of a load control unit and a display device according to the first embodiment. FIG. 2 is a schematic diagram showing a general configuration of a training apparatus in which a load control unit according to the first embodiment is disposed. FIG. 3 is a cross-sectional view of the load control unit taken along line IV-IV of FIG. 3. FIG. 4 is a flowchart showing an example of a control flow in the training system according to the first embodiment. FIG. 5 is a diagram showing a state in which a setting screen for an additional braking force is displayed on the display device according to the first embodiment. FIG. 6 is a diagram showing an example of a display of training date and time displayed on the display device according to the first embodiment. FIG. 7 is a diagram showing an example of a display of training content displayed on the display device according to the first embodiment. FIG. 8 is a diagram showing an example of a performance graph displayed on the display device according to the first embodiment. FIG. 9 is a schematic diagram showing the overall configuration of a training system according to a second embodiment. FIG. 10 is a diagram explaining an error in a laser rangefinder. FIG. 11 is a diagram explaining cable replacement.

[0011] First Embodiment A training system 1 according to a first embodiment of the present disclosure will be described below with reference to FIGS.

[0012] [Configuration of the Training System] First, the general configuration of the training system 1 will be described with reference to Figures 1 and 2. Figure 1 is a schematic diagram showing the overall configuration of the training system 1. Figure 2 is a block diagram showing the configuration of a load control unit 10 and a display device 20.

[0013] 1, the training system 1 includes a load control unit 10, a display device 20, and a management server 30. The load control unit 10 is a device for applying additional braking force to the load generated by a weight 141 (described later) of the training device 100.

[0014] Training machine 100 has seat 300 for the user to sit on and handles 301 for the user to grasp with both hands to push open or lift up. Display device 20 is supported by support device 200 attached to training machine 100.

[0015] 2, the load control unit 10 has a control unit 15, an adjustment unit 16, a storage unit 17, and a communication unit 18. The control unit 15 controls each unit of the load control unit 10. The control unit 15 also controls the magnitude of the braking force added to the load generated by the weight 141. The load control unit 10 may be configured as, for example, a microcomputer.

[0016] Furthermore, adjustment unit 16 adjusts a load waveform that indicates a displacement of the braking force added to weight 141. Storage unit 17 stores various data used for controlling load control unit 10. Communication unit 18 is connected to be able to communicate with communication unit 25 of display device 20 via short-range wireless communication such as Bluetooth (registered trademark).

[0017] The display device 20 is, for example, a communication device such as a smartphone or a tablet carried by a user. As shown in FIG. 2 , the display device 20 includes a processing unit 21, a touch panel 22, a display 23, a memory 24, and a communication unit 25.

[0018] The processing unit 21 controls each unit of the display device 20. The touch panel 22 is arranged on the screen of the display 23, detects a pressed position on the screen, and outputs the detected position to the processing unit 21. The display 23 is a display screen such as a liquid crystal display or an organic EL (Electro Luminescence) display, and displays images. A dedicated application is stored in advance in the memory 24.

[0019] The communication unit 25 is connected to the communication unit 18 of the load control unit 10 so as to be able to communicate with the management server 30 via the network N.

[0020] The management server 30 stores the date and time when the user performed training using the training device 100 and the training content corresponding to the training date and time, in association with the user's ID.

[0021] [Configuration of Training Apparatus] Next, the general configuration of the training apparatus 100 will be described with reference to Figures 3 and 4. Figure 3 is a schematic diagram showing the general configuration of the training apparatus 100 in which the load control unit 10 is arranged. Figure 4 is a cross-sectional view of the load control unit 10 of Figure 3 taken along line IV-IV. For ease of explanation, the up-down direction, left-right direction, and front-rear direction of the training apparatus 100 are defined below as shown by the arrows in Figures 3 and 4.

[0022] As shown in Figure 3, training device 100 has a weight stack structure in which multiple weights 141 are stacked. Training device 100 is a weight stack type training device in which weights 141 move back and forth in the vertical direction, i.e., up and down, in response to the user's stroke. Here, the stroke refers to the action of the user operating handle 301 to pull out cable 120 and move weight 141 from its lowest position to its highest position. Furthermore, the stroke amount refers to the amount of cable pulled out in response to the user's stroke.

[0023] 3 and 4, training device 100 has a weight stack structure in which multiple weights 141 are stacked. Weights 141 are used as loads for training device 100 via cables 120 and pulleys 131 to 134, allowing for a variety of training styles depending on the type of training. This allows the user to perform effective muscle training.

[0024] The training device 100 allows a specific weight to be set by stacking multiple weights 141 to form a weight stack 140. The resistance control unit 10 detects the movement of the weight stack 140 in real time. The resistance control unit 10 then adds additional resistance to the weight selected by the user. This allows the user to fine-tune the resistance.

[0025] As shown in FIG. 3, the training device 100 has a right frame 111, an upper frame 112, a left frame 113, a lower frame 114, a cable 120, a pulley 131, a pulley 132, a pulley 133, a pulley 134, a weight stack 140, a lift shaft 151, a left guide shaft 152, and a right guide shaft 153.

[0026] The upper frame 112, the left frame 113, and the lower frame 114 form the framework for supporting the weight stack 140. The right frame 111 and the left frame 113 extend in the vertical direction and are connected by the upper frame 112 and the lower frame 114.

[0027] The cable 120 is used by the user to apply resistance to his or her body for training. One end 121 of the cable 120 is connected to a handle that the user holds with his or her hand. The other end 122 of the cable 120 is fixed to the upper frame 112.

[0028] Each of the pulleys 131 to 134 has a rotatable structure and is arranged to allow smooth movement of the cable 120. The pulley 134 is hung on the cable 120 and connected to the tip of the lift shaft 151. When one end 121 of the cable 120 is pulled, the pulley 134 rises because the other end 122 of the cable 120 is fixed to the upper frame 112. As the pulley 134 rises, the lift shaft 151 also rises.

[0029] The user can select any weight by replacing the pin P, allowing for quick and easy load adjustment. The lift shaft 151 is located in the center of the weight stack 140 and generates training load by raising and lowering it. The left guide shaft 152 and the right guide shaft 153 complement the lift shaft 151 and maintain the overall balance and stability of the weight stack 140.

[0030] The load control unit 10 is placed directly below the weight stack 140. This placement allows the load control unit 10 to detect the movement of the weight stack 140 in real time and make accurate load adjustments. The load control unit 10 can be retrofitted to training equipment already installed in a training facility, allowing for flexible compatibility with existing equipment.

[0031] This makes it easy to upgrade training equipment, allowing users to perform more effective training using the load control unit 10. The load control unit 10 may also be installed in training equipment before it is installed in a training facility, and may also be applied to newly introduced training equipment.

[0032] [Configuration of Load Control Unit] Next, the load control unit 10 will be described in detail with reference to Fig. 4. As shown in Fig. 4, the load control unit 10 includes a reel 11, a cable 12, a rotation detection unit 13, a magnetorheological fluid device 14, and a control unit 15.

[0033] The reel 11 has a rotating shaft member 11a. The cable 12 is connected to the lift shaft 151. The reel 11 is arranged to be rotatable around the rotating shaft member 11a as a rotation axis. The cable 12 is wound around the reel 11.

[0034] When the lift shaft 151 is raised, the cable 12 is unwound from the reel 11. On the other hand, when the lift shaft 151 is lowered, the cable 12 is wound onto the reel 11.

[0035] The rotation detection unit 13 detects the amount and direction of rotation of the rotating shaft member 11a and transmits the detection results to the control unit 15. The rotation detection unit 13 is, for example, a rotary encoder. The rotary encoder detects the rotation angle and rotation speed of the rotating shaft member 11a and transmits the detection results to the control unit 15. The control unit 15 controls the rotation of the reel 11 based on the amount and direction of rotation of the rotating shaft member 11a detected by the rotation detection unit 13.

[0036] Alternatively, a magnetic sensor or an optical sensor may be used as the rotation detector 13. The magnetic sensor detects the movement of a magnet attached to the rotating shaft member 11a and detects the amount and direction of rotation. The magnetic sensor transmits a control signal corresponding to the rotation of the rotating shaft member 11a to the controller 15.

[0037] The magnetorheological fluid device 14 includes a magnetorheological fluid 14 a and a container 14 b. The container 14 b contains the magnetorheological fluid 14 a. The magnetorheological fluid 14 a has a characteristic that its viscosity changes depending on the strength of the applied magnetic field.

[0038] An opening 14c is provided in the front surface of the container 14b. The rear portion 11b of the rotating shaft member 11a is inserted into the container 14b through the opening 14c. The magnetorheological fluid device 14 applies a braking force to the rear portion 11b of the rotating shaft member 11a inserted in the container 14b by changing the viscosity of the magnetorheological fluid 14a.

[0039] Specifically, the magnetorheological fluid device 14 has a rotor to which the rotating shaft member 11a is fixed and a coil that applies a magnetic field to the rotor. A magnetic field is generated by passing a current through the coil. This magnetic field changes the viscosity of the magnetorheological fluid 14a. The change in viscosity of the magnetorheological fluid 14a applies a braking force that prevents rotation of the rotor, i.e., the rotating shaft member 11a. The prevention of rotation of the rotating shaft member 11a prevents rotation of the reel 11.

[0040] The control unit 15 is a device for comprehensively controlling each component of the load control unit 10. The control unit 15 changes the viscosity of the magnetorheological fluid 14a by adjusting the strength of the magnetic field applied to the magnetorheological fluid 14a, for example, using PWM control. The control unit 15 adjusts the braking force applied to the rear portion 11b of the rotating shaft member 11a to precisely adjust the training load.

[0041] The control unit 15 realizes the training load set by the user by controlling the operation of the magnetorheological fluid device 14 based on the detection result by the rotation detection unit 13. The control unit 15 can adjust the load in real time according to the progress of the training or changes in the load.

[0042] A laser range finder 19 is provided at the front of the load control unit 10. The laser range finder 19 measures the distance to the weight 141 into which the user has inserted a pin P, out of the multiple weights 141 included in the weight stack 140. Based on this measurement result, the control unit 15 calculates the total weight of the weights 141 lifted by the user. This makes it possible to appropriately manage the load during training.

[0043] [Function of Load Control Unit] Next, the function of the load control unit 10 will be described with reference to Figures 2 and 3. When using the training device 100, the user determines the total weight by selecting each weight 141 to be lifted. Then, the user inserts a pin P through the pin insertion hole 141a of the lowest weight 141 of the weights 141 to be lifted and the pin insertion hole 151a of the lift shaft 151.

[0044] When a user grips the handles (not shown) of the training device 100 with both hands and performs a training motion, the lift shaft 151 rises, and the weights 141 selected by the user also rise.

[0045] When the user starts a stroke, the lift shaft 151 rises, and the cable 12 connected to the lower end of the lift shaft 151 also rises. At this time, the cable 12 is pulled out from the reel 11. When the cable 12 is pulled out from the reel 11, the rotary shaft member 11a of the reel 11 rotates.

[0046] The rotation detection unit 13 detects the amount and direction of rotation of the rotating shaft member 11a and transmits the detection result to the control unit 15. Based on the detection result by the rotation detection unit 13, the control unit 15 transmits to the magnetorheological fluid device 14 an instruction to change the strength of the magnetic field applied to the magnetorheological fluid 14a.

[0047] The magnetorheological fluid device 14 changes the strength of the magnetic field applied to the magnetorheological fluid 14a based on instructions from the control unit 15. The load control unit 10 adjusts the strength of the magnetic field applied to the magnetorheological fluid 14a to change the viscosity of the magnetorheological fluid 14a, thereby controlling the magnitude of the additional braking force that prevents rotation of the rear portion 11b of the rotating shaft member 11a.

[0048] [Control Flow in Training System] Next, the control flow of the training system 1 will be described with reference to the flowchart in Fig. 5. As shown in Fig. 5, first, the processing unit 21 of the display device 20 determines whether or not the user has operated the touch panel 22 to log in to a dedicated application (S1).

[0049] The processing unit 21 repeats step S1 until the user logs in by operating the touch panel 22 (S1: NO), and when the user logs in (S1: YES), a selection screen is displayed on the display 23 to allow the user to select a training mode (S2).

[0050] The selection screen displays a screen for selecting various modes, such as "beginning high mode" and "final high mode." "Beginning high mode" is a mode that applies maximum braking force in the first half of the user's stroke. "Final high mode" is a mode that applies maximum braking force in the second half of the user's stroke.

[0051] After step S2, processing unit 21 determines whether or not the training mode has been selected (S3). Processing unit 21 repeats step S3 until the training mode is selected (S3: NO). On the other hand, when the training mode is selected by the user (S3: YES), processing unit 21 starts load control unit 10 based on a start signal sent from communication unit 25 to communication unit 18 (S4).

[0052] After step S4, the adjustment unit 16 adjusts the additional braking force (S5). Here, Fig. 6 is a diagram showing a setting screen 230 for setting the additional braking force displayed on the display device 20. On the setting screen 230 shown in Fig. 6, the display device 20 displays the magnitude of the braking force during training in increments of 0.1 kg.

[0053] The user can then adjust the additional braking force in 0.1 kg increments up to 20.0 kg by moving their finger up or down along the setting screen 230. In this way, with the load control unit 10, the adjustment unit 16 appropriately adjusts the strength of the magnetic field applied to the magnetorheological fluid, thereby accurately controlling the magnitude of the additional braking force while taking into account the individual's physique, muscle strength, and other characteristics.

[0054] In this embodiment, the additional braking force is adjusted in increments of 0.1 kg, but this is not limited to this. By adjusting the additional braking force to less than the minimum unit of the weight stack 140, the user can adjust the load in a way that is not possible by changing the number of weights 141 being lifted. For example, if each weight 141 is 5.0 kg, the load generated by the weight 141 can only be adjusted in increments of 5.0 kg. By using the load control unit 10 to control the magnitude of the braking force less than 5.0 kg, the user can adjust the load more precisely.

[0055] After step S5, the user starts training by pressing a training start key displayed on the display 23 (S6). Specifically, the user moves each selected weight 141 back and forth in the up and down direction.

[0056] After step S6, the management server 30 starts recording the training (S7). In step S7, for example, the management server 30 stores the training content of the training performed by the user using the training device 100, in association with the user's ID.

[0057] After step S7, the management server 30 determines whether the training has ended (S8), and repeats step S8 until the training has ended (S8: NO).

[0058] When the user finishes the training (S8: YES), the management server 30 stores the date and time when the training was performed and the training content, in association with the user's ID (S9).

[0059] Here, Fig. 7 is a diagram showing an example of the training date and time displayed on the display device 20. The user selects the date and time for which they wish to understand the training content from the multiple dates and times shown in Fig. 7. Fig. 8 is a diagram showing an example of the training content displayed for the date and time selected on the screen of Fig. 7.

[0060] In Figure 8, "L" is the training data for the left arm, and "R" is the training data for the right arm. "Number of times" indicates the number of strokes performed in one training session, displayed for each date and time. "Set load" is a set value of the load during training that can be set for each stroke. For example, in "Beginning High Mode" and "Final High Mode," in which the magnitude of the braking force applied by the magnetorheological fluid device 14 changes depending on the stroke, the "Set load" is a load value that is the sum of the weight of the selected weight 141 and the peak value of the set braking force.

[0061] When any square is selected on the bar display section B1, which displays the number of strokes and the number of sets, the value of the load set for the number of strokes indicated in the selected square is displayed in "Set Load." In FIG. 8, the squares indicating the fifth stroke of the second set are selected on both the left and right sides, and the value of the load set for the fifth stroke of the second set is displayed in "Set Load." "Speed" is the speed at which the weight 141 moves. "Load" is the value of the load applied to the user during training, and is the sum of the weight of the weight 141 and the additional braking force. "Power" is the value obtained by multiplying the speed at which the weight 141 moves by the magnitude of the load applied to the user during training. In FIG. 8, "speed," "load," and "power" are values ​​for each training session.

[0062] Returning to FIG. 5, after step S9, the display device 20 displays the training date and time as shown in FIG. 7, and also displays the training content in association with the user's ID as shown in FIG. 8 (S10).

[0063] The training content displayed on the display 23 of the display device 20 includes the number of strokes, the average and peak values ​​of the magnitude of the load applied to the user during training, the average and peak values ​​of the speed of movement of the weight 141, or the average and peak values ​​of the power value. While these average and peak values ​​have been described as values ​​for one training session, this is not limitative. For example, values ​​for each stroke selected in the bar display section B1 shown in FIG. 8 may be displayed. The display 23 may also display a bar graph with the power value on the vertical axis and the number of strokes on the horizontal axis.

[0064] The user can then review the training history by checking the display on the display device 20.

[0065] The display 23 of the display device 20 may display a graph with the vertical axis representing the magnitude of the load (kg) applied to the user during training, the speed (m / s) of the movement of the weight 141, and the horizontal axis representing the stroke amount (mm). FIG. 9 is a diagram showing an example of a performance graph displayed on the display 23 of the display device 20. By checking the graph of FIG. 9 displayed on the display device 20, the user can visually recognize the load waveform of the load applied to the user, the actual movement speed of the weight 141, and the relationship between the target movement speed and the stroke for each stroke. This allows the user to fine-tune the magnitude of the braking force for each stroke to improve the quality of their training. Furthermore, the user can review their training by understanding the speed characteristics of the weight 141 for each position of the weight 141.

[0066] In the first embodiment, the user operates the display device 20, but this is not limiting. For example, an instructor who provides training guidance to the user may operate the display device 20. This allows the instructor to easily analyze the user's training results and provide optimal training guidance to the user.

[0067] According to the training system 1 of the first embodiment described above, each time a user trains, the training date and time and the training content are automatically stored in the management server 30 in association with the user's ID. After training, the user can easily analyze the training results by checking the past training history on the display 23 of the display device 20.

[0068] In particular, the display 23 displays the number of strokes, the magnitude of the load applied to the user, the speed of the movement of the weight 141, and a power value, which is the value obtained by multiplying the magnitude of the load applied to the user during training by the speed. This allows the user to quantitatively evaluate the quality of their training. In this way, the training system 1 allows training that incorporates velocity-based training (VBT), and further allows the quality of training to be improved by fine-tuning the additional braking force.

[0069] Furthermore, as shown in FIG. 8, a bar graph with the power value on the vertical axis and the number of strokes on the horizontal axis is displayed on the display device 20, so that the user can visually grasp the transition of the power value and easily evaluate the training effect.

[0070] Furthermore, the display device 20 displays the load applied to the user during training in 0.1 kg increments, allowing the user to fine-tune the braking force in 0.1 kg increments. This allows for fine adjustment of the load, which was difficult to achieve with conventional non-electric training machines. This allows the user to recognize small improvements in their daily training, helping to maintain their motivation.

[0071] [Embodiment 2] Next, a training system 1A according to embodiment 2 of the present disclosure will be described with reference to Fig. 10. For ease of explanation, components having the same functions as those described in embodiment 1 above will be denoted by the same reference numerals, and their description will not be repeated. The training system 1A of embodiment 2 differs from the training system 1 of embodiment 1 in that it does not include a management server 30.

[0072] Fig. 10 is a schematic diagram showing the overall configuration of the training system 1A. Note that the training device 100, the support device 200, the seat 300, and the handle 301 are omitted from Fig. 10.

[0073] 10 , the training system 1A includes a load control unit 10A and a display device 20. The load control unit 10A includes a control unit 11A and a storage unit 12A. The load control unit 10A controls the braking force applied to the user of the training device 100.

[0074] The training system 1A of the second embodiment differs from the training system 1 of the first embodiment in that the training date and time, training content, etc. of the user are stored in a storage unit 12A of a load control unit 10A instead of in a management server 30.

[0075] The load control unit 10A is a device that applies additional braking force to the weight 141 in a weight stack-type training device in which the weight 141 moves back and forth in a vertical direction. The control unit 11A controls the magnitude of the braking force by adjusting the strength of the magnetic field applied to the magnetorheological fluid 14a, thereby changing the viscosity of the magnetorheological fluid 14a. As a result, by appropriately adjusting the strength of the magnetic field applied to the magnetorheological fluid 14a by the control unit 11A, the viscosity of the magnetorheological fluid 14a can be changed, and the magnitude of the braking force can be accurately controlled.

[0076] The storage unit 12A stores the date and time when the user performed training using the training tool 100 and the training content corresponding to the training date and time, in association with the user's ID.

[0077] The control unit 11A causes the display 23 to display the training date and time and training content stored in the storage unit 12A in association with the user (see FIG. 8).

[0078] [Effects of Embodiment 2] The training system 1A of Embodiment 2 described above can achieve the same effects as the training system 1 of Embodiment 1. That is, with the training system 1A, each time a user trains, the training date and time and the training content are stored in the storage unit 12A in association with the user. Therefore, after training, the user can easily analyze the training results by checking the past training history on the display 23.

[0079] [Other Embodiments] In the above-described first and second embodiments, the training system 1, 1A is used by the user to perform training, but this is not limiting. For example, the user may use the training system 1, 1A to perform rehabilitation, or to play a game.

[0080] [Correction of Laser Rangefinder 19] As described above, the laser rangefinder 19 measures the distance to the weight 141 into which the pin P is inserted by the user. Here, an error may occur in the measurement by the laser rangefinder 19. If an error occurs, the total weight of the weight 141 lifted by the user may be calculated incorrectly. Therefore, if an error occurs in the measurement result of the laser rangefinder 19, the control unit 15 may correct the error by performing a predetermined calibration.

[0081] Before the load control unit 10, 10A is shipped as a product, the distance to the weight 141 into which the pin P of the training apparatus 100 is inserted is measured using a laser range finder 19, and the measurement result is stored in advance as a set value in the load control unit 10, 10A. When the training apparatus 100 is installed at a location where it will be used (such as a customer store), the distance to the weight 141 into which the pin P is inserted is measured again using the laser range finder 19. There is a risk of an error occurring between the distance stored in advance as a set value and the measurement result at the location where the training apparatus 100 will be used. For example, in FIG. 11 , "Distance (mm)" is the distance stored in advance as a set value before shipping, and "Actual Distance Measurement (mm)" is the actual value measured again using the laser range finder 19 at the location where the training apparatus 100 will be used.

[0082] The control unit 15 in the present disclosure compares the set value "distance (mm)" with the actual measurement value "actual distance measurement (mm)," and if these two pieces of data match, determines that the corresponding weight 141 has been selected by the user. Specifically, the user inserts a pin P into the weight 141 they wish to train with. The laser rangefinder 19 measures the distance to the weight 141 into which the user has inserted the pin P. The control unit 15 acquires the measurement result from the laser rangefinder 19 and compares the acquired measurement result with the set value "distance (mm)." If the comparison shows that these two pieces of data match, the control unit 15 determines that the corresponding weight 141 has been selected by the user.

[0083] Here, in FIG. 11 , we will explain the case where pin P is inserted into the top weight 141, i.e., where a 5 kg load has been selected by the user. As described above, the "Distance (mm)" shown in FIG. 11 is a value pre-stored as a preset value, and the "Actual Distance Measurement (mm)" is an actual measurement result obtained using the laser rangefinder 19. When the load is 5 kg, the "Distance (mm)" indicates that 466 mm is stored as the preset value. Therefore, if the measurement result by the laser rangefinder 19 is 466 mm, these two data points match, and the control unit 15 can determine that a 5 kg load has been selected. Here, as shown in FIG. 11 , if the measurement result by the laser rangefinder 19 is 465 mm, the two data points do not match, and the control unit 15 may not correctly determine that a 5 kg load has been selected. Therefore, when the two data points do not match, the control unit 15 corrects the error between the preset value and the actual measurement value. In the example shown in FIG. 11 , the error between the preset value and the actual measurement value is 1 mm, and this 1 mm is the target of correction.

[0084] As a calibration for error correction, so-called offset correction may be employed, in which the error (1 mm) is used as an offset value and the offset value is added to or subtracted from a set value, which is a distance stored in the load control unit 10, 10A. In the example shown in FIG. 11 , the control unit 15 can correct the error by subtracting the offset value (1 mm) from the set value (466 mm) and correcting the set value from 466 mm to 465 mm. By performing such calibration and correcting the error, the control unit 15 can correctly calculate the total weight of the weights 141, thereby making it possible to appropriately manage the load during training.

[0085] In the above examples, although the measurement timing is different, the measurement itself uses laser range finder 19. One cause of errors despite using the same laser range finder 19 is a slight deviation in the mounting position or angle of laser range finder 19 due to vibration or shock during shipping, for example. Therefore, the timing for performing calibration in the above examples is not particularly limited, but could be immediately after training apparatus 100 is installed in a training facility upon new opening, for example.

[0086] As another example, errors may occur due to aging of the laser rangefinder 19. Therefore, calibration may be performed a predetermined period of time (e.g., at a maintenance interval, such as a predetermined maintenance interval) after the training apparatus 100 is installed in a training facility, such as when the facility is newly opened. In this example, the "distance (mm)" in FIG. 11 indicates a preset value pre-stored in the load control unit 10, 10A (e.g., a measurement result measured using the laser rangefinder 19 before the load control unit 10, 10A is shipped as a product). The "actual distance measurement (mm)" indicates a measurement result measured using the laser rangefinder 19 at the location where the training apparatus 100 will be used, such as during the maintenance interval. For calibration, offset correction may be employed, as in the above example. That is, the control unit 15 subtracts an offset value (1 mm) from the preset value (466 mm) to correct the error by changing the preset value from 466 mm to 465 mm. By performing calibration periodically in this manner, the training apparatus 100 can be utilized for a long period of time.

[0087] In the above two cases, calibration using offset correction has been described, but calibration is not limited to offset correction. Another example of calibration is feedback control using PID (Proportional Integral Derivative).

[0088] By performing such calibration and correcting the error, the control unit 15 can correctly calculate the total weight of the weights 141, thereby making it possible to appropriately manage the load during training.

[0089] [Maintenance of Laser Rangefinder 19] The control unit 15 may monitor the voltage of the laser rangefinder 19 for the purpose of maintaining the laser rangefinder 19. The voltage of the laser rangefinder 19 can be detected, for example, using a voltage detection circuit installed on the circuit board constituting the microcomputer described above. The control unit 15 may notify the laser rangefinder 19 that an abnormality has occurred if the voltage of the laser rangefinder 19 obtained from the voltage detection circuit is outside a predetermined range. The notification may be sent to the display device 20 or another device. The notification is possible if the load control unit 10 is communicatively connected to not only the display device 20 but also other devices. Here, the other device may be, for example, a smartphone or tablet terminal carried by an administrator who manages the training apparatus 100. By the control unit 15 notifying a device carried by the administrator that an abnormality has occurred in the laser rangefinder 19, the administrator can properly maintain the training apparatus 100. In other words, such notifications improve engagement between the company selling the training device 100 and the customer who purchased it, and contribute to the safe use of the product.

[0090] The voltage monitoring target is not limited to the laser rangefinder 19. Other monitoring targets include the magnetorheological fluid device 14, an encoder used for A / D (Analog-Digital) conversion, etc. If the voltage of the magnetorheological fluid device 14, the encoder, etc. falls outside a preset range, the control unit 15 may notify that an abnormality has occurred in the magnetorheological fluid device 14, the encoder, etc. Such a notification can achieve the same effect as described above.

[0091] [Correction of braking force using magnetorheological fluid 14a] In the above, it has been described that the viscosity of the magnetorheological fluid 14a is changed by controlling the magnetic field, thereby adjusting the braking force. Here, the temperature of the magnetorheological fluid 14a may increase due to the influence of load motion, etc. Then, the braking force may decrease due to the increase in temperature of the magnetorheological fluid 14a. If the braking force decreases, the desired load cannot be obtained, so the control unit 15 may correct the decrease in braking force due to the increase in temperature of the magnetorheological fluid 14a.

[0092] Regarding the temperature of the magnetorheological fluid 14a, instead of directly using the temperature of the magnetorheological fluid 14a, the temperature of the magnetorheological fluid device 14 that contains the magnetorheological fluid 14a may be used. There is no particular limitation on the method for measuring the temperature of the magnetorheological fluid device 14, but one example is to provide a temperature sensor in the magnetorheological fluid device 14. When using the temperature of the magnetorheological fluid device 14, if the temperature of the magnetorheological fluid device 14 rises above a predetermined temperature, the control unit 15 may correct the reduction in braking force caused by the increase in temperature of the magnetorheological fluid device 14. Note that the "predetermined temperature" referred to here can be determined through experiments, simulations, etc.

[0093] A specific example of a method for correcting the reduced braking force will be described below. For example, the control unit 15 may perform feedback control by monitoring the temperature of the magnetorheological fluid device 14 in real time and adjusting the strength of the magnetic field when the temperature rises to correct the reduced braking force.

[0094] In a training environment, the temperature of the magnetorheological fluid 14a (the temperature of the magnetorheological fluid device 14) can change due to various factors, but by correcting the braking force in accordance with the increase in temperature as described above, it is possible to appropriately manage the load during training.

[0095] [Maintenance of Cable 120] When the number of uses of the cable 120 used for the reciprocating movement of the weight 141 (up and down movement in reference to FIG. 3 ) exceeds a predetermined number, the control unit 15 may issue a notification urging the user to replace the cable 120. The notification may be sent to the display device 20 or to another device as described above. Such a notification may be implemented by a dedicated application. FIG. 12 shows an example of the content of a notification displayed on the dedicated application. In FIG. 12 , the cable 120 will be described by dividing it into left and right cables. In FIG. 12 , "L" indicates the left cable of the cable 120, and "R" indicates the right cable.

[0096] As shown in FIG. 12 , the left cable has been used 72 times, and the right cable has been used 14,710 times. Here, it is assumed that the number of uses of the right cable exceeds the recommended number of uses for replacement. In this case, the control unit 15 notifies the user on a dedicated application that the right cable should be replaced. The notification method is not particularly limited, but the control unit 15 can, for example, notify the user by flashing a bar indicating the number of uses or by displaying a pop-up message stating "Replacement is recommended."

[0097] The "number of uses of the cable 120" here may be defined as follows: The rotation angle of the rotating shaft member 11a is detected by the rotation detection unit 13 (rotary encoder) described above, and the number of rotations of the rotating shaft member 11a is counted as the number of uses of the cable 120. The number of uses may be counted as one when the cable 120 is pulled out and rewound. Alternatively, the number of uses may be counted as one when the cable 120 is pulled out by a predetermined stroke or more. Note that counting one use when the cable 120 is pulled out and rewound is preferable because it allows the number of times the cable 120 rubs against the hole through which the cable 120 is inserted to be known, and the state of wear of the cable 120 to be known.

[0098] The object for which the replacement notification is to be sent is not limited to the cable 120. Another example is the magnetorheological fluid device 14. The number of uses of the magnetorheological fluid device 14 can be counted as follows: The rotation detector 13 (rotary encoder) detects the rotation angle of the rotating shaft member 11a, and the number of rotations of the rotating shaft member 11a is counted as the number of uses of the magnetorheological fluid device 14. The controller 15 may notify the user to replace the magnetorheological fluid device 14 when the number of rotations of the rotating shaft member 11a exceeds a predetermined number. This configuration promotes safe product use and improves customer engagement through maintenance services. Here, the greater the current input to the magnetorheological fluid device 14, the greater the viscosity of the magnetorheological fluid 14a and the greater the braking torque. However, repeated rotation of the rotating shaft member 11a with a high braking torque increases friction, facilitating wear within the magnetorheological fluid device 14. Therefore, it is preferable to evaluate the degree of wear inside the magnetorheological fluid device 14 by combining the number of times the magnetorheological fluid device 14 has been used with the amount of current (current value) input to the magnetorheological fluid device 14, as this allows for a more advanced understanding of the usage condition.

[0099] The method for counting the number of uses of the magnetorheological fluid device 14 is not limited to the above-described method. The number of uses of the magnetorheological fluid device 14 can be replaced by the number of uses of the magnetorheological fluid 14a. The number of uses of the magnetorheological fluid 14a can be replaced by the number of times the magnetic field strength has been adjusted. The number of times the magnetic field strength has been adjusted can be replaced by the number of times a current has been passed through the coil described above. The number of times a current has been passed through the coil can be counted using a memory built into the microcomputer described above. Therefore, the control unit 15 may notify the customer to replace the magnetorheological fluid device 14 when the number of times the magnetic field strength has been adjusted exceeds a predetermined number. This configuration promotes safe product use and improves customer engagement through maintenance services.

[0100] [Output of Training Content] Trainers generally manage trainee data using well-known software (e.g., Excel, OneTap, etc.). Therefore, the control unit 15 may output data indicating training content in a format compatible with such software. This facilitates management of training results and contributes to efficient analysis of training results. The "compatible format" is not particularly limited, but may be, for example, CSV format.

[0101] [Summary] A training system according to aspect 1 of the present disclosure includes a load control unit that controls the load applied to a user of a training tool, a display device capable of communicating with the load control unit, and a management server capable of communicating with the display device. The load control unit controls the magnitude of the braking force and the load by adjusting the strength of the magnetic field applied to the magnetorheological fluid to change the viscosity of the magnetorheological fluid. The management server stores the date and time when the user performed training using the training tool and the training content corresponding to the date and time, linking them to the user. The display device displays the date and time and the training content stored in the management server, corresponding to the user.

[0102] According to the above configuration, the load control unit appropriately adjusts the strength of the magnetic field applied to the magnetorheological fluid to change the viscosity of the magnetorheological fluid, thereby controlling the magnitude of the braking force and accurately controlling the load applied to the user. Furthermore, the user's training date and time and training content are displayed on the display device. This allows the user to accurately adjust the load during training, and further, by checking the training history on the display device, the user can easily analyze the training results.

[0103] A training system according to aspect 2 of the present disclosure is the above-mentioned aspect 1, wherein the braking force may be a braking force that is applied in addition to the load generated by a weight in a weight stack type training device in which the weight moves back and forth in a vertical direction.

[0104] According to the above configuration, the load control unit appropriately adjusts the strength of the magnetic field applied to the magnetorheological fluid to change the viscosity of the magnetorheological fluid and control the magnitude of the braking force added to the load generated by the weight, thereby enabling the load control unit to accurately control the load applied to the user.

[0105] In a training system according to aspect 3 of the present disclosure, in the above-mentioned aspect 1 or 2, the display device may display, as the training content, the number of strokes, the magnitude of the load, the speed of the weight movement, or a power value which is the value obtained by multiplying the speed by the magnitude of the load.

[0106] According to the above configuration, the display device displays the number of strokes, the magnitude of the load applied to the user, the speed of the weight movement, or the power value, which is the value obtained by multiplying the speed of the movement by the magnitude of the load applied to the user. This allows the user to quantitatively evaluate the quality of their training, and by fine-tuning the braking force, the quality of their training can be further improved.

[0107] A training system according to aspect 4 of the present disclosure is any one of aspects 1 to 3 above, wherein the display device displays a bar graph with the power value on the vertical axis and the number of strokes on the horizontal axis.

[0108] According to the above configuration, a bar graph with the power value on the vertical axis and the number of strokes on the horizontal axis is displayed on the display device, allowing the user to visually grasp the transition of the power value and easily evaluate the training results.

[0109] In a training system according to aspect 5 of the present disclosure, in any one of aspects 1 to 4 above, the display device may display a graph with the magnitude of the load or the speed during the training on the vertical axis and the stroke amount on the horizontal axis.

[0110] With this configuration, the user can visually recognize the relationship between the weight position and the magnitude of the load applied to the user or the speed of the weight movement by checking the graph displayed on the display device, which allows the user to fine-tune the magnitude of the braking force for each stroke to improve the quality of training.

[0111] A training system according to a sixth aspect of the present disclosure is the training system of the third aspect above, wherein the display device displays the magnitude of the load during training in increments of 0.1 kg.

[0112] According to the above configuration, the magnitude of the load applied to the user is displayed on the display device in increments of 0.1 kg, allowing the user to fine-tune the magnitude of the braking force in increments of 0.1 kg.

[0113] A training system according to a seventh aspect of the present disclosure is the training system of the third aspect above, wherein the display device may display the magnitude of the load in units smaller than the smallest unit of the weight stack.

[0114] According to the above configuration, the user can adjust the load, which cannot be achieved by changing the number of weights lifted.

[0115] A training system according to aspect 8 of the present disclosure is any one of aspects 1 to 7 above, wherein the load control unit further includes a laser rangefinder that measures the distance to a weight into which a pin is inserted, and may correct errors in the measurement results measured by the laser rangefinder at the location where the training equipment is used by the user.

[0116] According to the above configuration, the load control unit corrects the error, so that the total weight of the weights can be calculated correctly, and therefore the load during training can be managed appropriately.

[0117] In the training system according to aspect 9 of the present disclosure, in the above aspect 8, the load control unit may notify the user that an abnormality has occurred in the laser rangefinder if the voltage of the laser rangefinder falls outside a preset range.

[0118] According to the above configuration, it is possible to promote the safe use of laser rangefinders and improve customer engagement through maintenance services.

[0119] In a training system according to aspect 10 of the present disclosure, in any of aspects 1 to 9 above, the load control unit may correct the braking force that has decreased due to the increase in temperature of the magnetorheological fluid device that stores the magnetorheological fluid when the temperature of the magnetorheological fluid device that stores the magnetorheological fluid rises above a predetermined temperature.

[0120] According to the above configuration, the braking force is corrected in accordance with the temperature rise, making it possible to appropriately manage the load during training.

[0121] In a training system according to aspect 11 of the present disclosure, in the above-described aspect 10, the load control unit may notify that an abnormality has occurred in the magnetorheological fluid device if the voltage of the magnetorheological fluid device falls outside a predetermined range.

[0122] According to the above configuration, it is possible to promote the safe use of magnetorheological fluid devices and improve customer engagement through maintenance services.

[0123] In a training system according to aspect 12 of the present disclosure, in any of aspects 1 to 11 above, the load control unit may notify the user to replace the cable when the number of times the cable used to move the weight back and forth exceeds a predetermined number of times.

[0124] According to the above configuration, it is possible to promote the safe use of cables and improve customer engagement through maintenance services.

[0125] In a training system according to aspect 13 of the present disclosure, in the above-described aspect 10, the load control unit may notify the user to recommend replacing the magnetorheological fluid device when the number of times the magnetorheological fluid device has been used exceeds a predetermined number of times.

[0126] According to the above configuration, it is possible to promote the safe use of magnetorheological fluid devices and improve customer engagement through maintenance services.

[0127] A training system according to aspect 14 of the present disclosure, in any of aspects 1 to 13 above, may be such that the load control unit outputs data indicating the training content in a format compatible with specified software.

[0128] According to the above configuration, management of training results becomes easier, contributing to efficient analysis of training results.

[0129] A load control unit according to a fifteenth aspect of the present disclosure is a load control unit that controls the load applied to a user of a training device, and includes: a control unit that adjusts the strength of a magnetic field applied to a magnetorheological fluid to change the viscosity of the magnetorheological fluid, thereby controlling the magnitude of the braking force and thereby controlling the magnitude of the load; and a memory unit that stores the date and time when the user performed training using the training device and the training content corresponding to the date and time, linking them to the user. The control unit displays the date and time and the training content stored in the memory unit on a display device, corresponding to the user.

[0130] According to the above configuration, the user's training date and time and training content are displayed on the display device, which allows the user to easily analyze the training results by checking the training history on the display device.

[0131] In a load control unit according to aspect 16 of the present disclosure, in the above-described aspect 15, the braking force may be a braking force that is applied in addition to the load generated by a weight in a weight stack type training device in which the weight moves back and forth in a vertical direction.

[0132] According to the above configuration, the control unit appropriately adjusts the strength of the magnetic field applied to the magnetorheological fluid, thereby changing the viscosity of the magnetorheological fluid and accurately controlling the magnitude of the braking force added to the load generated by the weight, thereby allowing the load control unit to accurately control the load applied to the user.

[0133] The load control unit according to aspect 17 of the present disclosure, in accordance with aspect 15 above, further includes a laser rangefinder that measures the distance to the weight into which the pin is inserted, and the control unit may correct errors in the measurement results measured by the laser rangefinder at the location where the training equipment is used by the user.

[0134] According to the above configuration, the control unit corrects the error, so that the total weight of the weights can be calculated correctly, and therefore the load during training can be managed appropriately.

[0135] In the load control unit according to aspect 18 of the present disclosure, in aspect 17 above, the control unit may notify that an abnormality has occurred in the laser rangefinder if the voltage of the laser rangefinder falls outside a predetermined range.

[0136] According to the above configuration, it is possible to promote the safe use of laser rangefinders and improve customer engagement through maintenance services.

[0137] In the load control unit according to aspect 19 of the present disclosure, in any of aspects 15 to 18 above, the control unit may, when the temperature of the magnetorheological fluid device that stores the magnetorheological fluid rises above a predetermined temperature, correct the braking force that has decreased due to the increase in temperature of the magnetorheological fluid device.

[0138] According to the above configuration, the braking force is corrected in accordance with the temperature rise, making it possible to appropriately manage the load during training.

[0139] In the load control unit according to aspect 20 of the present disclosure, in the above aspect 19, the control unit may notify that an abnormality has occurred in the magnetorheological fluid device when the voltage of the magnetorheological fluid device falls outside a predetermined range.

[0140] According to the above configuration, it is possible to promote the safe use of magnetorheological fluid devices and improve customer engagement through maintenance services.

[0141] In the load control unit according to aspect 21 of the present disclosure, in any of aspects 15 to 20 above, the control unit may notify the user to replace the cable when the number of times the cable used to move the weight back and forth exceeds a predetermined number of times.

[0142] According to the above configuration, it is possible to promote the safe use of cables and improve customer engagement through maintenance services.

[0143] In the load control unit according to aspect 22 of the present disclosure, in the above-mentioned aspect 19, the control unit may notify the user to recommend replacing the magnetorheological fluid device when the number of times the magnetorheological fluid device has been used exceeds a predetermined number of times.

[0144] According to the above configuration, it is possible to promote the safe use of magnetorheological fluid devices and improve customer engagement through maintenance services.

[0145] In a load control unit according to aspect 23 of the present disclosure, in any of aspects 15 to 22 above, the control unit may output data indicating the training content in a format compatible with specified software.

[0146] According to the above configuration, management of training results becomes easier, contributing to efficient analysis of training results.

[0147] The present disclosure is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims. Embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the present invention. Furthermore, new technical features can be formed by combining the technical means disclosed in each embodiment.

[0148] REFERENCE SIGNS LIST 1, 1A Training system 10, 10A Load control unit 11A Control unit 12A Memory unit 14a Magnetorheological fluid 15 Control unit 16 Adjustment unit 17 Memory unit 20 Display device 30 Management server 100 Training equipment

Claims

1. A load control unit that controls the load applied to the user of the training equipment, A display device capable of communicating with the aforementioned load control unit, A management server capable of communicating with the aforementioned display device, Equipped with, The aforementioned load control unit is By adjusting the strength of the magnetic field applied to the magnetorheological fluid, the viscosity of the magnetorheological fluid is changed, thereby controlling the magnitude of the braking force and the load. The aforementioned management server The date and time on which the user performed training using the training equipment, and the training content corresponding to the date and time, are stored in association with the user. The aforementioned display device is The date and time and the training content stored on the management server are displayed in accordance with the user. The aforementioned load control unit is It is further equipped with a laser rangefinder that measures the distance to the weight into which the pin is inserted. A training system that corrects errors in measurement results measured by a laser rangefinder at a location where the training equipment is used by the user.

2. The aforementioned braking force is, The training system according to claim 1, wherein the braking force is applied in addition to the load generated by the weights in a weight stack type training device in which the weights move back and forth in the vertical direction.

3. The aforementioned display device is The training system according to claim 1 or 2, wherein the training content displays the number of strokes, the magnitude of the load, the speed of weight movement, or a power value which is the speed multiplied by the magnitude of the load.

4. The aforementioned display device is The training system according to claim 3, which displays a bar graph with the power value on the vertical axis and the number of strokes on the horizontal axis.

5. The aforementioned display device is The training system according to claim 3, which displays a graph with the magnitude of the load or speed during the training on the vertical axis and the stroke length on the horizontal axis.

6. The aforementioned display device is The training system according to claim 3, which displays the magnitude of the load during training in units of 0.1 kg.

7. The training system according to claim 3, wherein the display device displays the magnitude of the load in units less than the minimum unit of the weight stack.

8. The training system according to claim 1, wherein the load control unit notifies that an abnormality has occurred in the laser rangefinder when the voltage of the laser rangefinder falls outside a preset range.

9. The training system according to claim 1, wherein the load control unit outputs data indicating the training content in a format compatible with predetermined software.

10. A load control unit that controls the load applied to the user of training equipment, A display device capable of communicating with the aforementioned load control unit, A management server capable of communicating with the aforementioned display device, Equipped with, The aforementioned load control unit is By adjusting the strength of the magnetic field applied to the magnetorheological fluid, the viscosity of the magnetorheological fluid is changed, thereby controlling the magnitude of the braking force and the load. The aforementioned management server The date and time on which the user performed training using the training equipment, and the training content corresponding to the date and time, are stored in association with the user. The aforementioned display device is The date and time and the training content stored on the management server are displayed in accordance with the user. The aforementioned load control unit is When the temperature of the magnetoviscous fluid device containing the magnetoviscous fluid rises above a predetermined temperature, the braking force that has decreased due to the rise in temperature of the magnetoviscous fluid device is corrected. A training system that notifies the user to replace the magnetoviscous fluid device if the number of uses of the magnetoviscous fluid device exceeds a predetermined number.

11. The training system according to claim 10, wherein the load control unit notifies that an abnormality has occurred in the magnetoviscous fluid device when the voltage of the magnetoviscous fluid device falls outside a preset range.

12. A load control unit that controls the load applied to the user of training equipment, A display device capable of communicating with the aforementioned load control unit, A management server capable of communicating with the aforementioned display device, Equipped with, The aforementioned load control unit is By adjusting the strength of the magnetic field applied to the magnetorheological fluid, the viscosity of the magnetorheological fluid is changed, thereby controlling the magnitude of the braking force and the load. The aforementioned management server The date and time on which the user performed training using the training equipment, and the training content corresponding to the date and time, are stored in association with the user. The aforementioned display device is The date and time and the training content stored on the management server are displayed in accordance with the user. The aforementioned load control unit is A training system that notifies the user to replace a cable used for moving weights back and forth if the number of uses of the cable exceeds a predetermined number.

13. A load control unit that controls the load applied to the user of training equipment, A control unit controls the magnitude of the braking force and the magnitude of the load by adjusting the strength of the magnetic field applied to the magnetoviscous fluid, thereby changing the viscosity of the magnetoviscous fluid. A storage unit that stores the date and time when the user performed training using the training equipment, and the training content corresponding to the date and time, linked to the user; Equipped with, The control unit, The date and time and the training content stored in the memory unit are displayed on the display device in accordance with the user. It is further equipped with a laser rangefinder that measures the distance to the weight into which the pin is inserted. The control unit, A load control unit that corrects errors in measurement results measured by the laser rangefinder at the location where the training equipment is used by the user.

14. The aforementioned braking force is, The load control unit according to claim 13, which is a braking force applied in addition to the load generated by the weights in a weight stack type training device in which the weights move back and forth in the vertical direction.

15. The load control unit according to claim 13, wherein the control unit notifies that an abnormality has occurred in the laser rangefinder when the voltage of the laser rangefinder falls outside a preset range.

16. The load control unit according to claim 13, wherein the control unit outputs data indicating the training content in a format compatible with predetermined software.

17. A load control unit for controlling the load applied to a user of training equipment, A control unit controls the magnitude of the braking force and the magnitude of the load by adjusting the strength of the magnetic field applied to the magnetoviscous fluid, thereby changing the viscosity of the magnetoviscous fluid. A storage unit that stores the date and time when the user performed training using the training equipment, and the training content corresponding to the date and time, linked to the user; Equipped with, The control unit, The date and time and the training content stored in the memory unit are displayed on the display device in accordance with the user. When the temperature of the magnetoviscous fluid device containing the magnetoviscous fluid rises above a predetermined temperature, the braking force that has decreased due to the rise in temperature of the magnetoviscous fluid device is corrected. A load control unit that notifies the user to replace the magnetoviscous fluid device if the number of uses of the magnetoviscous fluid device exceeds a predetermined number of times.

18. The load control unit according to claim 17, wherein the control unit notifies the magnetoviscous fluid device that an abnormality has occurred in the magnetoviscous fluid device when the voltage of the magnetoviscous fluid device falls outside a preset range.

19. A load control unit for controlling the load applied to a user of training equipment, A control unit controls the magnitude of the braking force and the magnitude of the load by adjusting the strength of the magnetic field applied to the magnetoviscous fluid, thereby changing the viscosity of the magnetoviscous fluid. A storage unit that stores the date and time when the user performed training using the training equipment, and the training content corresponding to the date and time, linked to the user; Equipped with, The control unit, The date and time and the training content stored in the memory unit are displayed on the display device in accordance with the user. A load control unit that notifies the user to replace a cable used for the reciprocating movement of a weight if the number of uses of the cable exceeds a predetermined number.