TWI751775B - Evaluation method of the force ratio of exercise equipment - Google Patents

Abstract

A method for evaluating the force application ratio of sports equipment, comprising the following steps: detecting the current of a motor when a first crank is controlled to rotate by a user, so as to obtain a first current value; detecting that a second crank is rotated by the user's control the current of the motor to obtain a second current value; calculate the ratio of the first current value to a total current value to obtain a first force ratio, and calculate the ratio of the second current value to the total current value to obtain a second force application ratio, wherein the total current value is the sum of the first current value and the second current value; the first force application ratio and the second force application ratio are displayed on a screen. Thereby, the user can know the force application ratio of the two limbs, so that the user can adjust the force application of the two limbs.

Description

Evaluation method of force application ratio of sports equipment

The present invention is related to sports equipment; in particular, it refers to a method for evaluating the force application ratio of sports equipment.

It is known that in order to improve the muscle strength or muscular endurance of the user's limbs, exercise equipment is usually used for the user to exercise or rehabilitate. The conventional exercise equipment includes two cranks, two control members and a transmission mechanism. The two cranks are located on the left and right sides. On both sides, the two control pieces are connected with the two cranks, each of the control pieces can be a handle or a pedal, and the transmission mechanism is connected with the two cranks. The user operates the two control elements with both hands or feet to rotate the crank and then drive the transmission mechanism to act, thereby performing periodic revolving motions to stretch and move both limbs, thereby achieving limb muscle strength or muscle endurance exercise or rehabilitation.

However, when the user uses the exercise equipment, the left limb and the right limb exert force on the two control members respectively, and the user cannot feel whether the two limbs are evenly exerted, so that there may be one limb. When the force is heavy and the force on the other side is light, it is impossible to exercise or rehabilitate the two limbs equally.

Therefore, the design of the conventional sports equipment is still not perfect, and there is still room for improvement.

In view of this, the purpose of the present invention is to provide a method for evaluating the force application ratio of sports equipment, which can evaluate the force application ratio of the limbs on both sides of the user.

In order to achieve the above object, the present invention provides a method for evaluating the force application ratio of sports equipment, wherein the sports equipment includes a control module and a motor, and the control module includes a first crank located on two opposite sides, A second crank, a first control member and a second control member, the rotating shaft of the motor is coupled to the first crank and the second crank, the first control member and the second control member are respectively connected to the first control member A crank and the second crank, the first control member and the second control member are controlled by the user to drive the first crank and the second crank to rotate and drive the shaft of the motor to rotate; the evaluation method includes the following steps:

A. Detect the current of the motor when the first crank is rotated by the user's control to obtain a first current value; detect the current of the motor when the second crank is rotated by the user's control to obtain a first current value Two current values;

B. Calculate the ratio of the first current value to a total current value to obtain a first force application ratio, and calculate the ratio of the second current value to the total current value to obtain a second force application ratio, wherein , the total current value is the sum of the first current value and the second current value;

C. Display the first force ratio and the second force ratio on a screen.

The effect of the present invention is that the user can see the force application ratio of the two limbs when operating the control module on the screen, so that the user can adjust the force application of the two limbs.

In order to describe the present invention more clearly, preferred embodiments are given and described in detail with the drawings as follows. Please refer to FIG. 1 and FIG. 2 , which is an exercise device according to a preferred embodiment of the present invention, including a body 10 , a seat 12 , a first limb exercise device 14 , a second limb exercise device 26 , a control Device 28 and a screen 34.

The body 10 includes a first base 102 and a second base 104 . The first base 102 is disposed above the second base 104 . The seat 12 is disposed on the rear side of the body 10 , and the user can sit on the seat 12 .

The first limb exercise device 14 and the second limb exercise device 26 are disposed on the body 10 . In this embodiment, the first limb exercise device 14 is disposed on the first base 102 and the second limb exercise device 26 set on the second base 104 . The first limb exercise device 14 is used for the user to exercise the upper limb, and the second limb exercise device 26 is used for the user to exercise the lower limb.

The first limb movement device 14 includes a control module 16 and a motor 18 . The control module 16 includes a first crank 162 , a second crank 164 , a first control member 166 and a first crank 162 on two opposite sides. Two control members 168, the first crank 162 and the second crank 164 are coupled to the shaft 182 of the motor 18, the first control member 166 and the second control member 168 are respectively connected to the first crank 162 and the second Crank 164. In this embodiment, the first control member 166 and the second control member 168 are respectively a handle, and are controlled by the upper limbs of the user to drive the first crank 162 and the second crank 164 to rotate, thereby driving the motor 18 The shaft 182 rotates.

In addition, the first limb movement device 14 further includes a first position sensor 20 , a second position sensor 22 and an encoder 24 , the first position sensor 20 and the second position sensor 22 is disposed on an axis parallel to the rotating shaft 182 of the motor 18. The first position sensor 20 is used for generating a first signal when the first crank 162 passes through a first position P1, and the second position sensor is used for generating a first signal. A second signal is generated when the second crank passes through a second position P2. In this embodiment, the first position sensor 20 and the second position sensor 22 are respectively a reed switch, and a magnetic member 36 is respectively provided on the first crank 162 and the second crank 164 . When a crank 162 rotates and the magnetic element passes through the first position sensor 20, the reed switch is short-circuited to generate the first signal; the sensing action of the second position sensor 22 is the same, but when the second signal is generated, The second crank 164 is 180 degrees apart from the first crank 162 .

The encoder 24 is disposed on the shaft 182 of the motor 18 . When the shaft 182 of the motor 18 rotates, the encoder 24 is used for outputting a plurality of continuous pulse waves. In this embodiment, the encoder includes a first output end and a second output end, the first output end. Both the second output terminal and the second output terminal can output a plurality of pulse waves.

The second limb movement device 26 includes a control module 16, a motor 18, a first position sensor 20, a second position sensor 22, an encoder 24 and two magnetic elements 36, the second The configuration of the limb movement device 26 is the same as that of the first limb movement device 14 , but the first control member 262 and the second control member 264 are respectively a pedal, which will not be repeated here.

The control device 28 is disposed on the body 10 and includes a control module 30 and two motor driving modules 32. The control module 30 is electrically connected to the two motor driving modules 32, the two first position sensors 20, The two second position sensors 22 and the two encoders 24 . The two motor driving modules 32 are respectively connected to the two motors 18 . The control module 30 can be a microcontroller, and the control module 30 controls each of the motors 18 through each of the motor drive modules 32 . When each of the first cranks 162 and each of the second cranks 164 drives the rotating shaft of each of the motors 18 to rotate, each of the motors 18 generates a corresponding current. Each of the motor driving modules 32 has a current detection unit 322 , and each of the current detection units 322 is used to detect the current of each of the motors 18 and transmit a corresponding current signal to the control module 30 .

The screen 34 is disposed on the first base 102 and is electrically connected to the control module 30 .

With the above structure, the method for evaluating the force application ratio of the present embodiment can be performed, and the evaluation of the first limb movement device 14 will be described as an example below. The evaluation method includes the following steps as shown in Figure 3:

Step S01: Detect the current of the motor 18 when the first crank 162 is rotated by the user to obtain a first current value; and detect the current of the motor 18 when the second crank 164 is rotated by the user. current to obtain a second current value.

In this embodiment, the user controls the first crank 162 and the second crank 164 to rotate continuously. After the first crank 162 passes the first position P1, the control module 30 detects the current through the current detection unit 322. Measure the current of the motor 18 to obtain the first current value. After the second crank 164 passes through the second position P2, the control module 30 detects the current of the motor 18 through the current detection unit 322 to obtain the first current value. Obtain the second current value.

More specifically, please refer to FIG. 4 , the control module 30 receives the second signal generated by the second position sensor 22 after receiving the first signal generated by the first position sensor 20 . Before the signal, that is, between the first crank 162 passing the first position P1 and the second crank 164 passing the second position P2, the control module 30 continues to detect the motor through the current detection unit 322 18 current, and the control module 30 samples the measured current for a plurality of times (for example, 10 times), and then averages the obtained current to obtain the first current value. After that, after the control module 30 receives the second signal generated by the second position sensor 22 and before receiving the first signal generated by the first position sensor 20 , the control module transmits the The current detection unit 322 continuously detects the current of the motor 18, and the control module 30 samples the measured current for multiple times (for example, 10 times), and then averages the obtained current to obtain the second current value. The number of times of the above sampling is not limited to 10 times. The first signal and the second signal can be positive edge signals.

When the encoder 24 outputs the pulse wave, the control module 30 samples the current of the motor 18, for example, once at the positive edge of the pulse wave, or once at the high potential, after 10 consecutive pulse waves, that is, Sampling can be completed. Using the pulse wave output from the encoder 24 as the sampling time point, it can be ensured that the current of the motor 18 is obtained when the first crank 162 and the second crank 164 are rotating. In this embodiment, the pulse wave output by the first output end of the encoder 24 is taken as the sampling time point during the half-turn of the first crank 162, and the pulse wave output by the second output end of the encoder 24 is the first The sampling time points during the half-circle rotation of the two cranks 164 are not limited to this, and the pulse wave output from the same output terminal can also be used as the sampling time points during the half-circle rotating process of the two cranks. In practice, samples can also be sampled every predetermined time.

The aforementioned first current value is the average value of the current of the motor 18 obtained during the half-circle rotation of the first crank 162 by the user's right hand, and the second current value is obtained during the half-circle of the user's left-hand control of the second crank 164 The average value of the current of the motor 18 obtained.

Step S02: the control module 30 calculates the ratio of the first current value to a total current value to obtain a first force application ratio, and calculates the ratio of the second current value to the total current value to obtain a first Two force application ratios, wherein the total current value is the sum of the first current value and the second current value.

The calculation formula is as follows:

R1=I1/(I1+I2)×100%

R2=I2/(I1+I2)×100%

Wherein, R1 is the first force application ratio, R2 is the second force application ratio, I1 is the first current value, and I2 is the second current value.

Step S03 : the control module 30 displays the first force application ratio and the second force application ratio on the screen 34 .

For example, please cooperate with FIG. 5 to display on the screen 34 that “Right Hand Ratio” is the first force application ratio corresponding to the first limb movement device, and its value is 39%, and “Left Hand Ratio” corresponds to the first force application ratio of the first limb movement device. The value of the second force application ratio of the limb movement device 14 is 61%, and the first force application ratio and the second force application ratio are displayed by text display and a long image.

The above-mentioned method for evaluating the force application ratio can also be used to evaluate the second limb movement device, and the steps are the same, whereby the control module 30 can calculate the first force application ratio and the second force application ratio of the second limb movement device 26. force ratio. For example, in FIG. 5 , “Right Foot Ratio” is the first force application ratio corresponding to the second limb movement device 26 , and its value is 55%, and “Left Foot Ratio” is corresponding to the second limb movement device 26 . The second force application ratio of 26, its value is 45%, and the first force application ratio and the second force application ratio are displayed in a text display and a bar image.

With the above evaluation method, the user can see on the screen 34 whether the force exerted by the right limb and the right limb is average, and then adjust the force exerted by the right limb and the right limb. In addition, before step S01, the control module 30 can further control the motors 18 to provide a predetermined resistance through the motor drive modules 32, so that the user's limbs must exert more force. The force application ratio can be evaluated with a predetermined resistance.

In the second embodiment, in order to reduce the error of the sampling current, in step S01 , the first crank 162 may pass through the first position P1 to the second crank 164 passing through the second position P2 several times. , the current of the motor 18 is sampled multiple times and averaged to obtain the second current value; and multiple times between the second crank 164 passing through the second position P2 and the first crank 162 passing through the first position , the current of the motor 18 is sampled several times and averaged to obtain the second current value.

For example, take the average value of the current of the motor 18 obtained during two half-turns of the first crank 162 and the average value of the current of the motor 18 obtained during the second half-turn of the second crank 164 as an example. The control module 30 samples the current of the motor 18 a plurality of times (for example, 10 times per half-turn) and averages it after receiving the first signal and before receiving the second signal. ; and after the second signal is received in each of the two times and before the first signal is received, the current of the motor 18 is sampled a plurality of times (eg, 10 samples per half-turn) and averaged. In other words, in terms of the time sequence of actions, the first average current value is obtained during the first half-circle of the first crank 162, and the first current average value is obtained during the first half-circle of the second crank 164. Then, the second current average value is obtained during the second half-circle of the first crank 162, and the second current is obtained during the second half-circle of the second crank 164. times the current average value. Then, the control module 30 obtains the first and second current average values during the process of rotating the first crank 162 for two and a half turns, and then averages them to obtain the first current value, and the control module 30 will The second current value can be obtained by obtaining the average value of the current of the first time and the second time during the two half-turns of the second crank 164 and then averaging them.

In practice, it is also possible to average a plurality of currents sampled during the rotation of the first crank 162 for multiple half-turns, for example, average 20 currents sampled during the two-half-turn process of the first crank to obtain the first current. value. and averaging a plurality of currents sampled during several half-turns of the second crank 164, for example, averaging 20 currents sampled during two half-turns of the second crank 164 to obtain the first current value.

In another embodiment, the exercise equipment may also have one of the first limb movement device 14 and the second limb movement device 26 .

According to the above, the method for evaluating the force application ratio of the sports equipment of the present invention can let the user know the force application ratio of the two limbs when operating the control module, so that the user can adjust the force application of the two limbs.

The above descriptions are only preferred feasible embodiments of the present invention, and any equivalent changes made by applying the description of the present invention and the scope of the patent application should be included in the patent scope of the present invention.

[this invention] 10: Body 102: The first pedestal 104: Second base 12: Seat 14: First Limb Movement Device 16: Control module 162: First Crank 164: Second crank 166:First Control 168:Second control 18: Motor 182: Spindle 20: First position sensor 22: Second position sensor 24: Encoder 26: Second Limb Movement Device 262: Primary Control 264:Second Control 28: Control device 30: Control Module 32: Motor drive module 322: Current detection unit 34: Screen 36: Magnetics P1: first position P2: Second position S01~S03: Steps

FIG. 1 is a side view of the exercise equipment according to the first preferred embodiment of the present invention. FIG. 2 is a schematic diagram of the exercise equipment according to the first preferred embodiment of the present invention. FIG. 3 is a flow chart of the method for evaluating the force application ratio according to the first preferred embodiment of the present invention. FIG. 4 is a waveform diagram of the first preferred embodiment of the present invention. FIG. 5 is a user interface of the screen display of the first preferred embodiment of the present invention.

S01~S03: Steps

Claims (9)

A method for evaluating the force application ratio of sports equipment, wherein the sports equipment includes a control module and a motor, and the control module includes a first crank, a second crank, and a first control member located on two opposite sides and a second control member, the shaft of the motor is coupled to the first crank and the second crank, the first control member and the second control member are respectively connected to the first crank and the second crank, the first crank The control member and the second control member are controlled by the user to drive the first crank and the second crank to rotate and drive the rotation shaft of the motor to rotate; the evaluation method includes the following steps: A. Detect the current of the motor when the first crank is rotated by the user's control to obtain a first current value; detect the current of the motor when the second crank is rotated by the user's control to obtain a first current value Two current values; B. Calculate the ratio of the first current value to a total current value to obtain a first force application ratio, and calculate the ratio of the second current value to the total current value to obtain a second force application ratio, wherein , the total current value is the sum of the first current value and the second current value; C. Display the first force ratio and the second force ratio on a screen. The method for evaluating the force ratio of sports equipment as claimed in claim 1, wherein step A is to detect the current of the motor after the first crank passes a first position to obtain the first current value; and in the After the second crank passes through a second position, the current of the motor is detected to obtain the second current value. The method for evaluating the force ratio of sports equipment according to claim 2, wherein in step A, at least one time between the first crank passing through the first position and the second crank passing through the second position, the motor The current is sampled multiple times and averaged to obtain the first current value; and at least one time between the second crank passing the second position and the first crank passing the first position, sampling the current of the motor multiple times and average to obtain the second current value. The method for evaluating the force ratio of sports equipment according to claim 3, wherein the sports equipment comprises a first position sensor and a second position sensor, the first position sensor passing through the first crank The first position generates a first signal, and the second position sensor generates a second signal when the second crank passes through the second position; in step A, the evaluation method receives the first signal After the signal and before the second signal is received, the current of the motor is sampled multiple times and averaged; and after the second signal is received and before the first signal is received, the current of the motor is sampled multiple times times and averaged. The method for evaluating the force ratio of sports equipment according to claim 4, wherein the sports equipment includes an encoder, which is arranged on the shaft of the motor; when the shaft of the motor rotates, the encoder outputs a plurality of pulse waves; the In the evaluation method, in step A, the current of the motor is sampled when the encoder outputs a pulse wave. The method for evaluating the force ratio of sports equipment as claimed in claim 3, wherein in step A, the motor is performed for a plurality of times between the first crank passing through the first position and the second crank passing through the second position. The current of the motor is sampled multiple times and averaged; and between the second crank passing the second position and the first crank passing the first position, the current of the motor is sampled multiple times and averaged to obtain the second current value. The method for evaluating the force ratio of sports equipment according to claim 6, wherein the sports equipment includes a first position sensor and a second position sensor, the first position sensor passing through the first crank A first signal is generated when the first position, the second position sensor generates a second signal when the second crank passes the second position; the evaluation method in step A receives the After the first signal and before receiving the second signal, the current of the motor is sampled several times and averaged to obtain a first average current value, and then the obtained first average current values are averaged to obtain the first current value; and after the second signal is received for a plurality of times and before the first signal is received, the current of the motor is sampled for a plurality of times and averaged to obtain a second average current value, and then the The obtained second average current values are averaged to obtain the second current value. The method for evaluating the force ratio of sports equipment according to claim 7, wherein the sports equipment includes an encoder, which is arranged on the shaft of the motor; when the shaft of the motor rotates, the encoder outputs a plurality of pulse waves; the In the evaluation method, in step A, the current of the motor is sampled when the encoder outputs a pulse wave. The method for evaluating the force application ratio of the sports equipment according to claim 1, wherein before step A, the motor is controlled to provide a predetermined resistance.

Images