TWI769088B - Fitness system and weight value marking method - Google Patents

Abstract

A fitness system and a weight value marking method are provided. The fitness system includes a weight-configurating device and an electronic device. The weight-configurating device includes a plurality of levers, a holding shaft, a magnetic field disk, and a magnetic field sensor. The holding shaft rotates in the first direction to increase a number of the levers that are engaged by the holding shaft. The holding shaft rotates in the second direction to reduce the number of the levers that are engaged by the holding shaft. The magnetic field disk provides a plurality of first polarity magnetic fields and a plurality of second polarity magnetic fields. A plurality of first positions of the first polarity magnetic fields and A plurality of second positions of the second polarity magnetic fields are alternately arranged in the first direction. When the holding shaft rotates, the magnetic field sensor increases or decreases a weight value of the weight-configurating device according to the experienced change of polarity of the magnetic field. The electronic device displays the weight value.

Description

Fitness system and weight value marking method

The present invention relates to a fitness system, and more particularly, to a fitness system with a weight value marking function and a weight value marking method for the fitness system.

Existing fitness equipment, such as assembled dumbbells or barbells, cannot immediately provide the changed weight value when the number of installed bars is changed. Users often need to calculate by themselves to obtain the weight value of the fitness equipment. Such an operation is very inconvenient. Therefore, how to make the fitness equipment provide the weight value in real time when the number of installed bars is changed is one of the research focuses of those skilled in the art.

The "prior art" paragraph is only used to help understand the present disclosure, so the content disclosed in the "prior art" paragraph may contain some that do not constitute the prior art known to those with ordinary skill in the art. The content disclosed in the "prior art" paragraph does not represent the content or the problem to be solved by one or more embodiments of the present invention, and has been known or recognized by those with ordinary knowledge in the technical field before the application of the present invention.

The present invention provides a fitness system and a weight value marking method, which can instantly provide the weight value of the counterweight device when the number of installed bar pieces is changed.

Other objects and advantages of the present invention can be further understood from the technical features disclosed in the present invention.

To achieve one or part or all of the above objectives or other objectives, an embodiment of the present invention provides a fitness system. The fitness system includes a weight device and an electronic device. The counterweight device includes a plurality of bar pieces, a holding shaft, a magnetic field disk and a magnetic field sensor. The holding shaft is rotated in the first direction to increase the number of the plurality of lever pieces engaged by the holding shaft. The holding shaft is rotated in the second direction to reduce the number of the plurality of lever pieces engaged by the holding shaft. The weight value of the counterweight device is equal to the sum of the first weight value of the holding shaft and the second weight value of the engaged bar pieces of the plurality of bar pieces. The second direction is opposite to the first direction. The magnetic disk is arranged on the holding shaft. The magnetic field disk provides a plurality of first polarity magnetic fields and a plurality of second polarity magnetic fields. The plurality of first positions of the plurality of first polarity magnetic fields and the plurality of second positions of the plurality of second polarity magnetic fields are alternately arranged in the first direction. The polarities of the plurality of first polarity magnetic fields are different from the polarities of the plurality of second polarity magnetic fields. The magnetic field sensor senses the magnetic field on the magnetic disk. As the gripping shaft rotates, the magnetic field sensor increments or decrements the weight value depending on the change in the polarity of the magnetic field experienced. The electronic device communicates with the counterweight device to receive the weight value and display the weight value.

In one embodiment, the weight value is initialized when the grip shaft is rotated to the initial position.

In one embodiment, when the holding shaft rotates in the first direction from the initial position and the first polarity magnetic field among the plurality of first polarity magnetic fields and the plurality of second polarity magnetic fields is sensed, the magnetic field senses The tester enters increment mode to start incrementing the weight value.

In one embodiment, the magnetic field sensor currently in incremental mode increments the weight value when successively sensing magnetic fields of different polarities. When the magnetic field of the same polarity is continuously sensed, the magnetic field sensor currently in the increment mode enters the decrement mode to decrement the weight value.

In one embodiment, the magnetic field sensor currently in the decrement mode decrements the weight value when continuously sensing magnetic fields of different polarities. When the magnetic field of the same polarity is continuously sensed, the magnetic field sensor currently in the decreasing mode enters the increasing mode to increase the weight value.

In one embodiment, the weight device further includes a motion sensor. The motion sensor senses the displacement operation of the holding shaft and the rotation operation of the holding shaft to provide operation data related to the displacement operation and the rotation operation. The electronic device communicates with the counterweight device to receive operational data.

To achieve one or part or all of the above objectives or other objectives, an embodiment of the present invention provides a weight value marking method. The weight value marking method is used in a fitness system with a weight device and an electronic device. The counterweight device includes a plurality of bar pieces, a holding shaft, a magnetic field disk and a magnetic field sensor. The magnetic disk is arranged on the holding shaft. The weight value marking method includes: providing a plurality of first-polarity magnetic fields and a plurality of second-polarity magnetic fields by a magnetic disk, wherein a plurality of first positions of the plurality of first-polarity magnetic fields and a plurality of the plurality of second-polarity magnetic fields are provided. a plurality of second positions are alternately arranged in a first direction, wherein the polarity of the plurality of first polarity magnetic fields is different from the polarity of the plurality of second polarity magnetic fields; rotating along one of the first direction and the second direction Holding the shaft to adjust the number of the plurality of bar pieces engaged by the holding shaft, wherein the weight value of the counterweight device is equal to the first weight value of the holding shaft and the first weight value of the engaged bar piece among the plurality of bar pieces. The sum of two weight values, wherein the second direction is opposite to the first direction; the magnetic field on the magnetic field disk is sensed through the magnetic field sensor, and when the holding shaft rotates, according to the magnetic field polarity change experienced by the magnetic field sensor Increase or decrease the weight value of the counterweight device; and display the weight value through the electronic device.

In one embodiment, the weight value marking method further includes: rotating the holding shaft to an initial position to initialize the weight value.

In one embodiment, when the gripping shaft rotates, the step of increasing or decreasing the weight value of the counterweight device according to the change in the polarity of the magnetic field experienced by the magnetic field sensor includes: when the gripping shaft rotates from the initial position along the first When rotating in one direction and sensing the first magnetic field of the plurality of first polarity magnetic fields and the plurality of second polarity magnetic fields, the magnetic field sensor enters an increment mode to start incrementing the weight value.

In one embodiment, when the holding shaft rotates, the step of increasing or decreasing the weight value of the counterweight device according to the change in the polarity of the magnetic field experienced by the magnetic field sensor further includes: when continuously sensing different polarities When a magnetic field is present, the magnetic field sensor currently in the increment mode increments the weight value; and when the magnetic field of the same polarity is continuously sensed, the magnetic field sensor currently in the increment mode enters the decrement mode to decrement the weight value.

In one embodiment, when the grip shaft rotates, increasing or decreasing the weight value of the counterweight device according to the change in the polarity of the magnetic field experienced by the magnetic field sensor further includes: when magnetic fields of different polarities are continuously sensed , the magnetic field sensor currently in the decreasing mode decreases the weight value; and when the magnetic field of the same polarity is continuously sensed, the magnetic field sensor currently in the decreasing mode enters the increasing mode to increase the weight value.

Based on the above, the embodiments of the present invention have at least one of the following advantages or effects. When the gripping shaft is rotated to adjust the number of the bars being engaged, the magnetic field sensor increases or decreases the weight value in real time according to the change in the polarity of the magnetic field experienced, and displays the weight value through the electronic device. In this way, the present invention can improve the convenience in use of the counterweight device.

In order to make the above-mentioned features and advantages of the present invention more obvious and easy to understand, the following embodiments are given and described in detail with the accompanying drawings as follows.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Element symbols quoted in the following description will be regarded as the same or similar elements when the same element symbols appear in different drawings. These examples are only a part of the invention and do not disclose all possible embodiments of the invention. Rather, these embodiments are only examples within the scope of the patent application of the present invention. The foregoing and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment with reference to the drawings.

Please refer to FIG. 1 and FIG. 2 at the same time. FIG. 1 is a schematic diagram of a fitness system according to an embodiment of the present invention. FIG. 2 is a schematic diagram of a magnetic disk according to an embodiment of the present invention. The fitness system 10 includes a weight device 100 and an electronic device 200 . The weight device 100 may be fitness equipment such as assembled dumbbells or barbells. The electronic device 200 may be a desktop computer, a notebook computer, a tablet computer, a smart phone and other portable electronic devices or wearable electronic devices.

In this embodiment, the counterweight device 100 includes bar pieces L1 - L6 , a holding shaft 110 , a magnetic field disk 120 and a magnetic field sensor 130 . The gripping shaft 110 operates to be rotated along the central axis of the gripping shaft 110 , thereby adjusting the number of engaged lever pieces L1 to L6 . For example, the gripping shaft 110 includes an engaging portion 111 . The engaging portion 111 has a plurality of engaging mechanisms (not shown) corresponding to the lever pieces L1 to L6. The engaging portion 111 may increase or decrease the number of engaging portions L1 to L6 based on the rotation angle of the holding shaft 110 . In this embodiment, the holding shaft 110 is rotated along the first direction D1 to increase the number of lever pieces L1 to L6 engaged by the holding shaft 110 . The holding shaft 110 is rotated along the second direction D2 to reduce the number of lever pieces L1 to L6 engaged by the holding shaft 110 . The second direction D2 is opposite to the first direction D1.

The weight value of the counterweight device 100 is equal to the sum of the first weight value of the holding shaft 110 and the second weight value of the bar pieces engaged with the bar pieces L1 ˜ L6 .

In this embodiment, the magnetic disk 120 is disposed on the holding shaft 110 . For example, the magnetic disk 120 is sleeved and fixed on the holding shaft 110 . When the holding shaft 110 is rotated, the magnetic field disk 120 is also rotated. The magnetic field disk 120 provides the first polarity magnetic fields M1_1 ˜ M1_3 and the second polarity magnetic fields M2_1 ˜ M2_3 . The polarities of the first polarity magnetic fields M1_1 ˜ M1_3 are different from those of the second polarity magnetic fields M2_1 ˜ M2_3 . In other words, the polarities of the first polarity magnetic fields M1_1 ˜ M1_3 are opposite to the polarities of the second polarity magnetic fields M2_1 ˜ M2_3 . In this embodiment, the polarities of the first polarity magnetic fields M1_1 to M1_3 are the south poles. The polarities of the second polarity magnetic fields M2_1 to M2_3 are the north pole. The positions of the first polarity magnetic fields M1_1 to M1_3 and the positions of the second polarity magnetic fields M2_1 to M2_3 are alternately arranged in the first direction D1. For example, the first polarity magnetic fields M1_1 ˜ M1_3 and the second polarity magnetic fields M2_1 ˜ M2_3 are established on the disk surface of the magnetic field disk 120 . In the first direction D1, the first polarity magnetic field M1_1, the second polarity magnetic field M2_1, the first polarity magnetic field M1_2, the second polarity magnetic field M2_2, the first polarity magnetic field M1_3, and the second polarity magnetic field M2_3 are established in sequence. The positions of the first polarity magnetic fields M1_1 ˜ M1_3 and the positions of the second polarity magnetic fields M2_1 ˜ M2_3 are related to the positions where the holding shaft 110 is engaged with the lever pieces L1 ˜ L6 . The first polarity magnetic fields M1_1 ˜ M1_3 and the second polarity magnetic fields M2_1 ˜ M2_3 may be implemented by magnets, respectively.

In this embodiment, the magnetic field sensor 130 senses the magnetic field on the magnetic field disk 120 . The position of the magnetic field sensor 130 is fixed at a position and senses the magnetic field on the disk surface of the magnetic field disk 120 . When the holding shaft 110 is rotated, the magnetic field sensor 130 increments or decrements the weight value of the counterweight device 100 according to the experienced change in the polarity of the magnetic field. That is, when the holding shaft 110 is rotated, the number of the lever pieces L1 to L6 engaged by the holding shaft 110 will be adjusted. In addition, the magnetic field sensor 130 provides the weight value according to the change in the polarity of the magnetic field experienced by the magnetic field sensor 130 itself. In this way, when the holding shaft 110 is rotated, the weight device 100 can provide the weight value in real time. In addition, the electronic device 200 communicates with the weight device 100 to receive the weight value and display the weight value. Therefore, the user can use the electronic device 200 to view the weight value of the counterweight device 100 in real time. In this way, the present invention can improve the convenience in use of the counterweight device 100 . In this embodiment, the magnetic field sensor 130 may be implemented by a Hall sensor.

It should be noted that the present embodiment only uses the magnetic field sensor 130 to sense the change of the magnetic field polarity to increase or decrease the weight value. This embodiment does not need to encode multiple positions or rotation angles on the magnetic field disk 120, nor does it need to install sensing elements on the bars L1-L6. As such, the present embodiment provides a very low-cost weight value marking mechanism.

For the convenience of description, the number of magnetic fields and the number of bar pieces in this embodiment are respectively 6 as an example. The number of the magnetic field and the number of the bar pieces of the present invention may be multiple respectively, which is not limited to this embodiment. The present invention is not limited to the shape of the lever piece and the engagement/disengagement mechanism.

In this embodiment, when the grip shaft 110 is rotated to the initial position, the weight value is initialized. For example, when the holding shaft 110 is rotated along the second direction D2, the weight value will be decremented. When the holding shaft 110 is rotated to the initial position, the weight value is initialized to be equal to the first weight value (ie, the weight of the holding shaft 110 itself).

Please refer to FIG. 1 , FIG. 2 and FIG. 3 at the same time. FIG. 3 is a flowchart of a method for marking a weight value according to an embodiment of the present invention. In this embodiment, the weight value marking method is applicable to the fitness system 10 . In step S110 , a plurality of first-polarity magnetic fields M1_1 ˜ M1_3 and a plurality of second-polarity magnetic fields M2_1 ˜ M2_3 are provided by the magnetic field disk 120 . The positions of the first polarity magnetic fields M1_1 to M1_3 and the positions of the second polarity magnetic fields M2_1 to M2_3 are alternately arranged in the first direction D1. In step S120 , the holding shaft 110 is rotated to adjust the number of lever pieces L1 to L6 engaged by the holding shaft 110 . In step S130, the magnetic field sensor 130 increments or decrements the weight value according to the magnetic field polarity change experienced by the magnetic field sensor 130 itself. In step S140, the weight value is received through the electronic device 200, and the weight value is displayed. The implementation details of steps S110 - 140 can be sufficiently taught from the embodiments of FIG. 1 and FIG. 2 , so they are not repeated here.

The implementation details of step S130 will be further described below.

Please refer to Figure 1, Figure 2, Figure 3 and Figure 4 at the same time. FIG. 4 is a flow chart of the method of FIG. 3 for the steps of rotating the holding shaft to adjust the number of the lever pieces engaged by the holding shaft. In this embodiment, step S130 includes steps S131 to S135. In step S131, when the holding shaft 110 rotates along the first direction D1 from the initial position, and the magnetic field sensor 130 senses the first magnetic field among the first polarity magnetic fields M1_1 ˜ M1_3 and the second polarity magnetic fields M2_1 ˜ M2_3 , that is, the first polarity magnetic field M1_1. Next, the magnetic field sensor 130 will enter the increment mode in step S132 to increment the weight value. Therefore, after step S131 is completed, the magnetic field sensor 130 will first enter the incremental mode.

For example, the weight of the holding shaft 110 and the weights of the bars L1 to L6 are respectively 2 kg. When the holding shaft 110 is in the initial position, the weight value is the weight value of the holding shaft 110 , that is, 2 kilograms. In step S131 , when the holding shaft 110 rotates along the first direction D1 from the initial position, the holding shaft 110 is engaged with the bar L1 . The magnetic field disk 120 is rotated in conjunction with the holding shaft 110 , so that the magnetic field sensor 130 senses the first polarity magnetic field M1_1 . Therefore, in step S132, the magnetic field sensor 130 will enter the increment mode to increment the weight value by 2 kg for the first time. Therefore, the weight value is 4 kg.

In step S133 , when the holding shaft 110 is rotated, the magnetic field sensor 130 determines whether magnetic fields with different polarities are continuously sensed when the magnetic field sensor 130 is in the incremental mode. When the magnetic field sensor 130 continuously senses magnetic fields of different polarities, the magnetic field sensor 130 currently in the increment mode will increment the weight value again in step S132 . For example, the magnetic field sensor 130 senses the first polarity magnetic field M1_1 in step S131 and senses the second polarity magnetic field M2_3 in step S133. This means that the grip shaft 110 rotates in the first direction D1 and is engaged with the lever pieces L1, L2. Therefore, the magnetic field sensor 130 currently in the incremental mode will increase the weight value to 6 kg.

On the other hand, in the case where the holding shaft 110 is rotated, when the magnetic field sensor 130 in the incremental mode continuously senses the magnetic field of the same polarity (ie, "No"), the magnetic field sensor 130 will In S134, the decreasing mode is entered to decrease the weight value. For example, the magnetic field sensor 130 senses the first polarity magnetic field M1_1 in step S131 and senses a magnetic field with the same polarity as the first polarity magnetic field M1_1 in step S133. Based on the positional relationship between the first polarity magnetic fields M1_1 ˜ M1_3 and the second polarity magnetic fields M2_1 ˜ M2_3 , it means that the magnetic field sensor 130 continuously senses the first polarity magnetic field M1_1 . That is, the grip shaft 110 rotates in the second direction D2 and disengages the lever piece L1. Therefore, the magnetic field sensor 130 currently in the increment mode will enter the decrement mode to reduce the weight value from 4kg to 2kg.

In step S135 , when the holding shaft 110 is rotated, the magnetic field sensor 130 determines whether magnetic fields of different polarities are continuously sensed when the magnetic field sensor 130 is in the decreasing mode. When the magnetic field sensor 130 continuously senses magnetic fields of different polarities, the magnetic field sensor 130 currently in the decreasing mode will decrease the weight value again in step S134 . For example, the magnetic field sensor 130 in the decreasing mode first senses the first polarity magnetic field M1_3 and then senses the second polarity magnetic field M2_3. Therefore, the magnetic field sensor 130 currently in the decreasing mode will decrease the weight value again.

It should be noted here that the magnetic field sensor 130 senses an earlier magnetic field of the two consecutive magnetic fields in the first mode, and senses a later magnetic field of the two consecutive magnetic fields in the second mode. The first mode may be different from the second mode. Therefore, in some cases, the magnetic field sensor 130 may continuously sense two magnetic fields of the same polarity or different polarities in different modes. This embodiment only judges the current mode when the later one of the two consecutive magnetic fields is sensed, and does not consider the previous mode when the earlier one of the two consecutive magnetic fields is sensed.

On the other hand, when the holding shaft 110 is rotated, when the magnetic field sensor 130 continuously senses the magnetic field of the same polarity (ie, "No"), the magnetic field sensor 130 currently in the decreasing mode will In step S132, the increment mode is entered to increment the weight value.

Please refer to FIG. 1 and FIG. 5 at the same time. FIG. 5 is a circuit block diagram of a counterweight device according to an embodiment of the present invention. In this embodiment, the circuit structure of the counterweight device 100 includes a magnetic field sensor 130 and a motion sensor 140 . The motion sensor 140 senses the displacement operation and the rotation operation of the holding shaft 110 to provide operation data related to the displacement operation and the rotation operation. The electronic device 200 communicates with the counterweight device 100 to receive operation data. In this embodiment, the motion sensor 140 may be an inertial measurement unit (IMU) with a multi-axis (eg, 6-axis or 9-axis) dynamic sensing function.

In this embodiment, the weight device 100 further includes a battery 150 , a processor 160 and a communication unit 170 . The battery 150 can power the magnetic field sensor 130 , the motion sensor 140 , the processor 160 and the communication unit 170 . The communication unit 170 of this embodiment is provided inside the processor 160 . The processor 160 receives the weight value, the operation data and the power information of the battery 150 , and controls the communication unit 170 to provide the weight value, the operation data and the power information to the electronic device 200 . Therefore, the electronic device 200 can obtain the weight value, the operation data and the power information. In addition, the processor 160 can also perform pairing settings with the electronic device 200 through the communication unit 170 .

In some embodiments, the communication unit 170 may be provided external to the processor 160 .

In this embodiment, the electronic device 200 is equipped with an application program. The app will provide fitness classes for the weight device 100 . The fitness class will standardize the operation weight, operation action and operation frequency of the weight device 100 . For example, through the app, the user learns the operation weight, operation movement and number of operations specified in the fitness course. Therefore, the user can operate the counterweight device 100 according to the operation weight, the operation action and the number of operations.

During the operation of the counterweight device 100 by the user, the magnetic field sensor 130 will sense the change of the polarity of the magnetic field M to provide the weight value of the counterweight device 100 . The motion sensor 140 senses operation data such as displacement operation and rotation operation of the holding shaft 110 . The processor 160 controls the communication unit 170 to provide the weight value and the operation data to the electronic device 200 . Therefore, the application program of the electronic device 200 can know the weight value and the operation data. The app will judge whether the weight value conforms to the operation weight specified by the fitness course, and judge whether the operation data conforms to the operation action specified by the fitness course. When the weight value conforms to the operation weight specified by the fitness course and whether the operation data conforms to the operation action specified by the fitness course, it means that the user operates the counterweight device 100 according to the fitness course and completes a single operation action. Therefore, the application counts the completed actions. Once the maneuver count reaches the number of maneuvers, the fitness session ends.

On the other hand, when the weight value does not conform to the operation weight and/or operation data specified in the fitness course, the application will not count the completed operation and propose the corresponding Warning.

In addition, the application program also records the fitness history associated with the user's operation of the weight device 100 .

It is worth mentioning here that, in the process of operating the weight device 100 , the user can use the application program of the electronic device 200 to know the weight value and whether the operation method conforms to the specifications of the fitness course. In addition, the user does not need to calculate the weight value and the number of operations by himself. In this way, the fitness system 10 can improve the user's experience of using the weight device 100 .

In this embodiment, the application program can also display the current power level of the battery 150 . When the current level of the battery 150 is lower than a threshold, the application will provide a corresponding warning to remind the user.

In addition, when the application program is activated, the application program will prompt the user to rotate the grip shaft 110 back to the initial position, thereby initializing the weight value.

To sum up, the embodiments of the present invention have at least one of the following advantages or effects. The present invention only uses the magnetic field sensor to sense the change of the polarity of the magnetic field to increment or decrement the weight value. This embodiment does not need to encode multiple positions or rotation angles on the magnetic field disk, nor does it need to install sensing elements on the bar. As such, the present invention provides a very low cost weight value marking mechanism. The user can use the electronic device to view the weight value of the counterweight device. In this way, the present invention can improve the convenience in use of the counterweight device. In addition, the application of the electronic device will provide fitness classes. In the process of operating the weight device, the user can use the application program of the electronic device to know the weight value and whether the operation method conforms to the specifications of the fitness course. Users also do not need to count the number of operations by themselves. In this way, the fitness system can enhance the user's experience of using the weight device.

However, the above are only preferred embodiments of the present invention, and should not limit the scope of the present invention, that is, any simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the contents of the description of the invention, All still fall within the scope of the patent of the present invention. In addition, it is not necessary for any embodiment of the present invention or the claimed scope of the present invention to achieve all of the objects or advantages or features disclosed in the present invention. In addition, the abstract section and the title are only used to aid the search of patent documents and are not intended to limit the scope of the present invention. In addition, terms such as "first" and "second" mentioned in this specification or the scope of the patent application are only used to name the elements or to distinguish different embodiments or scopes, and are not used to limit the number of elements. upper or lower limit.

10: Fitness System 100: Counterweight device 110: Holding the shaft 111: Engagement part 120: Magnetic disk 130: Magnetic Field Sensor 140: Motion Sensor 150: battery 160: Processor 170: Communication Unit 200: Electronics D1: first direction D2: Second direction L1~L6: bar piece M: Magnetic field M1_1~M1_3: The first polarity magnetic field M2_1~M2_3: The second polarity magnetic field S110~S140: Steps S131~S135: Steps

FIG. 1 is a schematic diagram of a fitness system according to an embodiment of the present invention. FIG. 2 is a schematic diagram of a magnetic disk according to an embodiment of the present invention. FIG. 3 is a flow chart of a method for marking a weight value according to an embodiment of the present invention. FIG. 4 is a flow chart of the method according to the steps of rotating the holding shaft to adjust the number of the lever pieces engaged by the holding shaft in FIG. 3 . FIG. 5 is a circuit block diagram of a counterweight device according to an embodiment of the present invention.

10: Fitness System

100: Counterweight device

110: Holding the shaft

111: Engagement part

120: Magnetic disk

130: Magnetic Field Sensor

200: Electronics

D1: first direction

D2: Second direction

L1~L6: bar piece

Claims (11)

A fitness system, comprising: a weight device, including: a plurality of bar pieces; a holding shaft, rotated along a first direction to increase the number of the bar pieces engaged by the holding shaft, and along a second direction Rotate to reduce the number of the lever pieces engaged by the holding shaft, wherein a weight value of the counterweight device is equal to a first weight value of the holding shaft and a first weight value of the engaged lever pieces among the lever pieces. The sum of two weight values, wherein the second direction is opposite to the first direction; a magnetic field disk, disposed on the grip shaft, configured to provide a plurality of first polarity magnetic fields and a plurality of second polarity magnetic fields, wherein the A plurality of first positions of the first polarity magnetic field and a plurality of second positions of the second polarity magnetic fields are alternately arranged in the first direction, wherein the polarities of the first polarity magnetic fields are different from those of the second polarity magnetic fields. polarity; and a magnetic field sensor configured to sense the magnetic field on the magnetic disk and increment or decrement the weight value depending on the experienced change in magnetic field polarity as the gripping shaft rotates; and An electronic device communicates with the weight device to receive the weight value and display the weight value. The fitness system of claim 1, wherein the weight value is initialized when the grip shaft is rotated to an initial position. The fitness system of claim 1, wherein when the holding shaft rotates along the first direction from an initial position and senses the first polarity magnetic field among the first polarity magnetic fields and the second polarity magnetic fields , the magnetic field sensor enters an increment mode to start incrementing the weight value. The fitness system of claim 3, wherein: the magnetic field sensor currently in the incremental mode increments the weight value when magnetic fields of different polarities are continuously sensed, and when magnetic fields of the same polarity are continuously sensed , the magnetic field sensor currently in the increasing mode enters a decreasing mode to decrease the weight value. The fitness system of claim 4, wherein: when magnetic fields of different polarities are continuously sensed, the magnetic field sensor currently in the decrement mode decrements the weight value, and when magnetic fields of the same polarity are continuously sensed , the magnetic field sensor currently in the decreasing mode enters the increasing mode to increase the weight value. The fitness system of claim 1, the weight device further comprising: a motion sensor configured to sense a displacement operation of the grip shaft and a rotational operation of the grip shaft to provide a motion sensor associated with the grip shaft An operation data of the displacement operation and the rotation operation, and wherein the electronic device communicates with the counterweight device to receive the operation data. A weight value marking method for a fitness system having a weight device and an electronic device, wherein the weight device includes a plurality of bar pieces, a holding shaft, A magnetic field disk and a magnetic field sensor, wherein the magnetic field disk is disposed on the holding shaft, wherein the weight value marking method includes: providing a plurality of first-polarity magnetic fields and a plurality of second-polarity magnetic fields from the magnetic field disk, wherein the A plurality of first positions of the first polarity magnetic fields and a plurality of second positions of the second polarity magnetic fields are alternately arranged in a first direction, wherein the polarities of the first polarity magnetic fields are different from those of the second polarity magnetic fields polarity; rotate the holding shaft along one of the first direction and a second direction to adjust the number of the bars engaged by the holding shaft, wherein a weight value of the counterweight device is equal to the holding shaft The sum of a first weight value of the shaft and a second weight value of the engaged bar pieces among the bar pieces, wherein the second direction is opposite to the first direction; the magnetic field disk is sensed through the magnetic field sensor and when the holding shaft rotates, the weight value of the counterweight device is incremented or decremented according to the change in the polarity of the magnetic field experienced by the magnetic field sensor; and the weight is displayed through the electronic device value. The weight value marking method according to claim 7, further comprising: rotating the holding shaft to an initial position to initialize the weight value. The weight value marking method as claimed in claim 7, wherein when the holding shaft rotates, incrementing or decrementing the weight value of the counterweight device according to the polarity change of the magnetic field experienced by the magnetic field sensor comprises: : When the holding shaft rotates along the first direction from an initial position and senses the first magnetic field of the first polarity magnetic fields and the second polarity magnetic fields, the magnetic field sensor enters an incremental mode to start incrementing the weight value. The weight value marking method according to claim 9, wherein when the holding shaft rotates, the weight value of the counterweight device is incremented or decremented according to the polarity change of the magnetic field experienced by the magnetic field sensor. Including: when magnetic fields of different polarities are continuously sensed, the magnetic field sensor currently in the incremental mode increments the weight value; and when magnetic fields of the same polarity are continuously sensed, the magnetic field sensor currently in the incremental mode The magnetic field sensor enters a decrement mode to decrement the weight value. The weight value marking method as claimed in claim 10, wherein when the holding shaft rotates, the weight value of the counterweight device is incremented or decremented according to the change in the polarity of the magnetic field experienced by the magnetic field sensor. Including: when continuously sensing magnetic fields of different polarities, the magnetic field sensor currently in the decreasing mode decrements the weight value; and when continuously sensing magnetic fields of the same polarity, the magnetic field sensor currently in the decreasing mode The magnetic field sensor enters the increment mode to increment the weight value.

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