A training method and system based on a medical lower limb power car

Abstract

The present application relates to the technical field of rehabilitation training, and particularly relates to a training method and system based on a medical lower limb power car. The method comprises the following steps: in response to a treatment mode being an active training mode, determining an initial resistance according to input user information; the user information comprises body weight; collecting a rotating speed in a user training process; determining a target resistance according to a difference between the rotating speed and a target rotating speed; and outputting the target resistance so that the user trains based on the target resistance. The method can dynamically change the resistance according to real-time data of the user, can ensure that the user always trains within the range of the target rotating speed, and improves the safety and reliability of the training.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rehabilitation training. More particularly, the present application relates to a training method and system based on a medical lower limb power car. BACKGROUND

[0002] The medical lower limb power car is an auxiliary walking device that can help users perform lower limb exercise training and improve lower limb joint activity, muscle strength and coordination. Traditional medical lower limb power cars usually only provide active or passive training modes, which cannot meet the diverse rehabilitation needs of patients. Moreover, for rehabilitation patients, the existing training methods are mostly based on manual operation, lacking automation and intelligence, and therefore often require a large amount of human resources. For the rehabilitation population, due to insufficient muscle strength, limited joint activity and other problems, a resistance value and a target power are generally selected, and then training is performed based on the resistance and the target power. However, the setting of the resistance value and the target power is generally determined by the experience of a rehabilitation therapist, which is highly subjective and can easily result in overtraining or undertraining.

[0003] Therefore, how to adjust the training intensity according to the actual situation of the user to improve the safety and reliability of the training is a technical problem that needs to be solved in the field of rehabilitation medicine. SUMMARY

[0004] To solve the above technical problem of being unable to adjust the training intensity according to the actual state of the user, the present application provides solutions in the following aspects.

[0005] In a first aspect, the present application provides a training method based on a medical lower limb power car, comprising: in response to a treatment mode being an active training mode, determining an initial resistance according to input user information; the user information includes body weight; collecting the rotation speed during the user's training process; determining a target resistance according to the difference between the rotation speed and a target rotation speed; and outputting the target resistance to enable the user to train based on the target resistance.

[0006] Further, the user information further includes age, gender and height; the target rotation speed is obtained by matching the user information with a preset database to obtain a reference rotation speed; the average rotation speed of the user within a preset time is obtained; and the target rotation speed is determined according to the reference rotation speed and the average rotation speed.

[0007] Further, the calculation expression of the target rotation speed is:

[0008]

[0009] In the formula, r tar represents the target rotation speed, r nor represents the reference rotation speed, and r userwherein n represents the average rotation speed, k represents a resistance-rotation speed attenuation coefficient, and R0 represents the initial resistance.

[0010] Further, the initial resistance is calculated by the following expression:

[0011] R0=w×a

[0012] wherein R0 represents the initial resistance, w represents the weight of the user, and a represents a correction coefficient, which is between 0.5 and 1.5.

[0013] Further, the correction coefficient is calculated by the following expression:

[0014]

[0015] wherein a represents the correction coefficient, h represents the height of the user, w represents the weight of the user, and A represents the age of the user.

[0016] Further, the target resistance is determined according to the difference between the rotation speed and the target rotation speed, comprising:

[0017] R=R1-k0(r tar -r1);

[0018] wherein R represents the target resistance, R1 represents the current resistance, k0 represents a proportional coefficient, r tar represents the target rotation speed, and r1 represents the rotation speed.

[0019] Further, the target resistance is determined according to the difference between the rotation speed and the target rotation speed, comprising: if the rotation speed is greater than or equal to the target rotation speed, the target resistance is determined according to the current resistance and a first coefficient, the first coefficient being greater than 1; if the rotation speed is less than the target rotation speed, the target resistance is determined according to the current resistance and a second coefficient, the second coefficient being less than 1.

[0020] Further, in response to the treatment mode being a passive training mode, the motor is controlled to output corresponding power according to the input target rotation speed.

[0021] Further, the method further comprises: in response to the training being completed, generating a training report, the training report comprising the average rotation speed and the training time.

[0022] In a second aspect, the present application provides a training system based on a medical lower limb power car, comprising a processor and a memory, the memory storing computer program instructions, when the computer program instructions are executed by the processor, realizing a training method of a medical lower limb power car according to the first aspect.

[0023] The present application has the beneficial effect that the present application can ensure that the user trains within a safe range by determining the initial resistance corresponding to the user according to the user information, avoiding the cases of insufficient training or excessive training due to the empirical setting of the resistance value. The target rotating speed is determined according to the rotating speed difference between the user and the normal person corresponding to the user, so that the determined target rotating speed is more matched with the actual demand of the user, thereby improving the training effect. The resistance is dynamically changed according to the real-time rotating speed and the target rotating speed of the user, so as to ensure that the rotating speed of the user is always maintained within the target rotating speed range, avoiding the cases of muscle overfatigue caused by excessive training or poor training effect caused by insufficient training, thereby ensuring the safety and reliability of the training. BRIEF DESCRIPTION OF DRAWINGS

[0024] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which a number of embodiments of the application are illustrated by way of example and not limitation. Like or corresponding elements in the figures are denoted by like reference numerals, wherein:

[0025] Figure 1 is a flowchart schematically showing a training method based on a medical lower limb power car according to an embodiment of the present application;

[0026] Figure 2 is a structural block diagram schematically showing a training system based on a medical lower limb power car according to an embodiment of the present application. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be apparently and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0028] The specific embodiments of the present application will be described in detail below with reference to the drawings.

[0029] Figure 1 is a flowchart schematically showing a training method based on a medical lower limb power car according to an embodiment of the present application;

[0030] The medical lower limb power car is a kind of exercise training equipment, which can train lower limb muscles or joint activities by setting different resistances. For patients with lower limb injuries or users (such as the elderly) who need to improve lower limb strength or joint activities, different resistances can be set to meet different training needs. However, when training with the power car, the resistance is generally set by the therapist according to experience, and the resistance set by the therapist may be too large or too small. If the resistance is too large, it is easy to cause muscle fatigue of the user, and if the resistance is too small, it will not stimulate the muscles and joints enough, which will affect the training efficiency.

[0031] To solve the above problems, in a first aspect, the present application provides a training method based on a medical lower limb power car. The medical lower limb power car implementing the method of the present application can include a pedal, a frame, a flywheel, a touch screen, a motor, a resistance device and a main controller. Specifically, the height of the seat cushion of the medical lower limb power car is adjustable to enable users of different heights and weights to train and ensure user comfort. A fixing belt is provided on the pedal to prevent the user's feet from falling off during training, especially for users undergoing passive training or people needing rehabilitation training. Further, a speed sensor is installed on the pedal to collect the rotational speed of the pedal. The motor is used to output a specified power to drive the user to undergo passive training. The flywheel is installed in the middle of the frame to provide inertia. The resistance device adopts a magnetic resistance or mechanical resistance system to output a specified resistance to assist the user in active training. The main controller is installed inside the frame to control the motor, resistance device and sensor. The touch screen can display the user's rotational speed, training time and other information in real time.

[0032] Specifically, as shown in Figure 1 The method of the present application comprises:

[0033] S101, in response to the treatment mode being an active training mode, determining an initial resistance according to input user information.

[0034] In this embodiment, the user's information includes height, weight, age and gender. Specifically, the initial resistance corresponding to the user can be determined according to the user's weight. In one embodiment, the calculation expression of the initial resistance is:

[0035] R0=w×a;

[0036] In the formula, R0 is the initial resistance, w is the weight of the user, and a is a correction coefficient, which is between 0.5 and 1.5.

[0037] By determining the initial resistance according to the user's weight, it can be ensured that the set resistance is within a safe range for the user, thereby improving the safety of the user's training.

[0038] Further, since the situation of each user is different, the corresponding correction coefficient is also different, and in actual application, the correction coefficient can be determined according to the actual situation of the user. In an embodiment, the value of the correction coefficient can be determined according to the height, weight and age of the user. Specifically, the calculation expression of the correction coefficient can be:

[0039]

[0040] In the formula, a is the correction coefficient, h is the height of the user, w is the weight of the user, and A is the age of the user.

[0041] It can be understood that the greater the ratio of weight to height, the more developed the muscles, bones and the like of the user are, and the greater the power provided, so that appropriately increasing the initial resistance can ensure the effect of the training; further, since the older the age is, the weaker the body recovery ability is, and the smaller the power provided is, the training intensity needs to be reduced, and therefore, appropriately reducing the resistance can avoid muscle strains and the like caused by excessive resistance, thereby ensuring the safety of the user training. By setting the lower limit, the problem of excessively low resistance caused by excessively high age or excessively low weight can be avoided, and the basic training effect can be ensured.

[0042] For example, the weight of the user is 60 kg, the height is 1.70 m, and the age is 50 years old, and the initial resistance value can be set to 30-90 N. More specifically, according to the height, age and weight, the initial resistance value can be set to 42 N, wherein the correction coefficient is 0.70 (retaining two decimal places).

[0043] By setting the initial resistance value according to the age, height and weight of the user, it can be ensured that the resistance value matches the actual situation of the user, and the insufficient training or excessive training caused by setting a fixed resistance according to experience can be avoided, thereby improving the safety and reliability of the training.

[0044] In an optional embodiment, the initial resistance is also displayed, and the therapist can confirm or modify the initial resistance to ensure the reliability of the training.

[0045] In an embodiment, the method of the application further comprises: in response to the treatment mode being a passive training mode, controlling the motor to output corresponding power according to the input target rotating speed. Further, the training time can be input, and according to the input target rotating speed and training time, the user can be ensured to perform passive training, which is suitable for patients who cannot provide power for training themselves. It should be noted that the value of passive training input can be determined by the therapist.

[0046] By setting active training and passive training, the training needs of different users can be met, and the application range is wider.

[0047] S102, collect the rotating speed of the user during the training process, and output a target resistance according to the difference between the rotating speed and a target rotating speed, so that the user trains based on the target resistance.

[0048] In one embodiment, the rotating speed of the user during the training process can be collected by a speed sensor. It can be understood that the rotating speed refers to the speed (pedaling frequency, unit: revolutions per minute) of the user.

[0049] Further, before the training, it further includes determining a target rotating speed. In one embodiment, the target rotating speed is obtained by matching the user information with a preset database to obtain a reference rotating speed. Specifically, the rotating speed of normal people (relative to the rehabilitation population) of different ages, different genders, different heights, and different weights during the lower limb power car training can be collected or collected, and a database is established based on the obtained data. The rotating speed obtained by matching is the reference rotating speed. In an optional embodiment, age, gender, and BMI (body mass index) can also be set as three parameters. Specifically, according to the age, gender, and BMI, people are classified, and for the same category of people, the average value of the rotating speed is taken as the reference rotating speed. Among them, the BMI within a difference of 1 is set as a category. For example, 18.5-19.4 is classified into the same category, 19.5-20.4 is classified into a category, and so on.

[0050] It can be understood that the reference rotating speed obtained by matching represents the rehabilitation target of the user. By matching according to the age, gender, weight, and height, the reference rotating speed obtained can be more in line with the final rehabilitation needs of the user, thereby improving the accuracy of subsequent determination of the target rotating speed.

[0051] Further, the average rotating speed of the user within a preset time is obtained. It can be understood that the average rotating speed represents the user's exercise ability to some extent. Specifically, a small average rotating speed indicates that the user's exercise ability is poor, that is, the user's lower limb state is poor; a large average rotating speed indicates that the user's exercise ability is strong, that is, the user's lower limb state is good.

[0052] Specifically, the average rotating speed of the user within 3 minutes or 5 minutes can be collected to accurately represent the lower limb ability of the user. The rotating speed can be based on the rotating speed under no resistance or the rotating speed under resistance, corresponding to the conditions when the data in the database is collected. In this embodiment, the rotating speed is based on the rotating speed under no resistance.

[0053] Further, the target rotating speed is determined according to the reference rotating speed and the average rotating speed. In one embodiment, the calculation expression of the target rotating speed is:

[0054]

[0055] wherein r tar represents the target rotating speed, r nor represents the reference rotating speed, r user represents the average rotating speed, k represents a resistance-rotating speed attenuation coefficient, and R0 represents the initial resistance. The resistance-rotating speed attenuation coefficient can be obtained through experiments. In an embodiment, the resistance-rotating speed attenuation coefficient can be 0.057.

[0056] According to the above calculation expression of the target rotating speed, the greater the difference between the average rotating speed of the user and the reference rotating speed, the worse the state of the lower limbs of the user relative to normal people, and the smaller the target rotating speed should be set to ensure that the user can smoothly and safely perform the training.

[0057] In an optional embodiment, an adaptive adjustment stage can also be set. Specifically, a transition target value is set instead of the target rotating speed at the beginning of the training, and then the training is performed according to the target rotating speed calculated according to the above calculation expression of the target rotating speed after a period of transition training, so as to allow the user to have a gradual adaptation process and avoid muscle injury and the like. The transition target value can be set to 30% of the difference between the average rotating speed of the user and the target rotating speed calculated, i.e., the transition target value = average rotating speed + 30% (target rotating speed-average rotating speed), and a person skilled in the art can select a corresponding proportion according to actual needs.

[0058] Since the target value set according to experience is prone to being too large or too small, and the accuracy of the setting is limited by the experience of the rehabilitation therapist, the present application determines the target rotating speed according to the difference between the average rotating speed of the user and the rotating speed of normal people, which can avoid the subjectivity of setting the target rotating speed according to experience, so as to ensure that the target rotating speed of the user corresponds to the actual situation of the user, avoid the problem of muscle overfatigue caused by the target rotating speed being set too large, and the problem of insufficient stimulation of muscles and joints caused by the target rotating speed being set too small, thereby ensuring the safety and reliability of the training.

[0059] In an optional embodiment, the target rotating speed can also be corrected according to the rehabilitation stage of the user. Specifically, the calculation expression of the target rotating speed is:

[0060]

[0061] wherein r tar represents the target rotating speed, r nor represents the reference rotating speed, r user represents the average rotating speed, k represents a resistance-rotating speed attenuation coefficient, R0 represents the initial resistance, and k(s) represents a correction value corresponding to the rehabilitation stage s.

[0062] The rehabilitation stage can be determined by a rehabilitation instructor or the user. Specifically, the rehabilitation stage includes a rehabilitation early stage (s is 1), a rehabilitation middle stage (s is 2), and a rehabilitation late stage (s is 3). It can be understood that, since the user's state is poor in the rehabilitation early stage, the tolerance for the speed difference is low, so a larger correction value can be set to make the target speed decrease obviously. This decreased amplitude is more in line with the demand for body protection in the rehabilitation early stage, thereby ensuring the safe performance of the training. As the rehabilitation process advances to the middle and late stages, the user's physical function gradually recovers, and setting the correction value to gradually decrease can gradually increase the target speed to ensure that the muscles and joints are stimulated during the training, thereby ensuring the training effect.

[0063] In one embodiment, the correction value corresponding to the rehabilitation early stage (i.e., k(1)) can be set to 0.8, the correction value corresponding to the rehabilitation middle stage (i.e., k(2)) can be set to 0.6, and the correction value corresponding to the rehabilitation late stage (i.e., k(1)) can be set to 0.4. Those skilled in the art can change the number of rehabilitation stages and the corresponding values according to actual needs. By correcting the target speed according to the rehabilitation stage of the user, the target speed obtained can be more suitable for the user at the current stage, thereby ensuring the training effect.

[0064] Further, the target resistance can be determined according to the difference between the current speed and the target speed of the user and the current resistance. Specifically, the calculation expression of the target resistance is:

[0065] R = R1 - k0(r tar - r1);

[0066] In the formula, R is the target resistance, R1 is the current resistance, r tar is the target speed, r1 is the current speed, and k0 is a proportional coefficient, which is between 0.3 and 0.8. In one embodiment, k0 is 0.5.

[0067] It can be understood that the target speed represents the training intensity to some extent, and therefore, by adjusting the resistance according to the target speed and the current speed, the user can always train within the target intensity, thereby ensuring the training effect.

[0068] In another embodiment, the target resistance can also be directly determined according to the current resistance. Specifically, if the speed of the user is greater than or equal to the target speed, the target resistance is determined according to the current resistance and a first coefficient, and the first coefficient is greater than 1. In one embodiment, the calculation expression of the target resistance is:

[0069] R = R1 x k1;

[0070] In the formula, R is the target resistance, R1 is the current resistance, and k1 is the first coefficient.

[0071] It can be understood that when the rotation speed of the user is higher than the target rotation speed, it indicates that the current resistance is small, so that the user can complete the training more easily. Therefore, the resistance can be appropriately increased to ensure that the user can train within the target rotation speed, thereby ensuring the effect of the training.

[0072] In an embodiment, the first coefficient can be 1.1, and in an alternative embodiment, a person skilled in the art can set it according to actual needs.

[0073] Further, if the rotation speed of the user is less than the target rotation speed, the target resistance is determined according to the current resistance and a second coefficient, and the second coefficient is less than 1. In an embodiment, the calculation expression of the target resistance is:

[0074] R = R1 x k2;

[0075] In the formula, R is the target resistance, R1 is the current resistance, and k2 is the second coefficient.

[0076] It can be understood that when the rotation speed of the user is lower than the target rotation speed, it indicates that the current resistance is large, so that the user needs to exert more force to train, and it is easy to cause overfatigue or muscle strain. Therefore, the resistance can be appropriately reduced to ensure that the user can train within the target rotation speed, thereby ensuring the safety of the training.

[0077] In an embodiment, k2 is 0.9, and in an alternative embodiment, a person skilled in the art can set it according to actual needs.

[0078] By dynamically adjusting the resistance value according to the difference between the rotation speed of the user and the target rotation speed during the training of the user, the initial resistance can be corrected, so that the user can always train within the target rotation speed range, ensuring that the user can effectively train, avoiding the situation that the training is excessive or insufficient due to the experience setting of the resistance value, thereby improving the safety and reliability of the training. Further, by setting the first coefficient and the second coefficient, the resistance can be smoothly changed to adapt the user to the change of the resistance, avoiding the muscle strain caused by the too large change of the resistance, thereby ensuring the safety of the training.

[0079] Further, the method of the present application further comprises: in response to the end of the training, outputting a training report, the training report comprising: average rotation speed, training time, initial resistance, etc. By recording the training data of the user and generating the training report, a scientific reference can be provided for the next training of the user.

[0080] Figure 2 is a structural block diagram schematically showing a training system based on a medical lower limb power car according to an embodiment of the present application.

[0081] In a second aspect, the present application also provides a training system based on medical lower limb power car. As shown in the figure, the training system based on medical lower limb power car comprises a processor and a memory, the memory stores computer program instructions, when the computer program instructions are executed by the processor, a training method based on medical lower limb power car according to the first aspect of the present application is realized. Figure 2

[0082] The training system based on medical lower limb power car also comprises communication interface and other components which are well known to those skilled in the art, the setting and function of which are known in the art, so here is not described in detail.

[0083] In the present application, the aforementioned memory can be any tangible medium containing or storing programs, which can be used or combined with instruction execution system, device or instrument. For example, the computer readable storage medium can be any appropriate magnetic storage medium or magneto-optical storage medium, such as resistive random access memory RRAM (Resistive Random Access Memory), dynamic random access memory DRAM (Dynamic Random Access Memory), static random access memory SRAM (Static Random-Access Memory), enhanced dynamic random access memory EDRAM (Enhanced Dynamic Random Access Memory), high bandwidth memory HBM (High-Bandwidth Memory), hybrid memory cube HMC (Hybrid Memory Cube) and the like, or any other medium that can be used to store the required information and can be accessed by application programs, modules or both. Any such computer storage medium can be part of the device or accessible or connectable to the device. Any application or module described in the present application can be implemented using computer readable / executable instructions that can be stored or otherwise held by such computer readable medium.

[0084] In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three or more, etc., unless otherwise explicitly specified. In addition, the division of steps of the above method is only for the purpose of clear description, and can be combined into one step or some steps can be split and decomposed into multiple steps, as long as the same logical relationship is included.

[0085] ​While the specification has illustrated and described various embodiments of the application, it will be clear to those of ordinary skill in the art that various changes, modifications, and substitutions can be made thereto without departing from the spirit and scope of the application. It is understood that in the process of practicing the application, various alternatives, modifications, and equivalents can be employed.

Claims

1. A training method based on a medical lower limb power vehicle, characterized in that, include: The treatment mode is an active training mode, which determines the initial resistance based on the input user information; The user information includes weight; Collect rotational speed data during user training; The target resistance is determined based on the difference between the stated rotational speed and the target rotational speed; the calculation expression for the target rotational speed is: ； In the formula, This indicates the target rotational speed. Indicates the reference speed. Indicates the average rotational speed. This represents the drag-speed attenuation coefficient. This represents the initial resistance; The target resistance is output so that the user can train based on the target resistance.

2. The training method based on a medical lower limb power vehicle according to claim 1, characterized in that, The user information also includes age, gender, and height; the method for obtaining the target rotational speed is as follows: The user information is matched with a preset database to obtain a reference rotational speed; Obtain the user's average rotation speed over a preset time period; The target rotational speed is determined based on the reference rotational speed and the average rotational speed.

3. The training method based on a medical lower limb power vehicle according to claim 1, characterized in that, The formula for calculating the initial resistance is: ； In the formula, The initial resistance is w, the user's weight is a, and a is a correction factor, ranging from 0.5 to 1.

5.

4. The training method based on a medical lower limb power vehicle according to claim 3, characterized in that, The formula for calculating the correction factor is: ； In the formula, a is the correction coefficient. The user's height, The user's weight, The user's age.

5. The training method based on a medical lower limb power vehicle according to claim 1, characterized in that, Determining the target resistance based on the difference between the stated rotational speed and the target rotational speed includes: ； In the formula, R is the target resistance. As a current obstacle, This is the proportionality coefficient. The target rotational speed, The rotational speed is denoted as .

6. The training method based on a medical lower limb power vehicle according to claim 1, characterized in that, Determining the target resistance based on the difference between the stated rotational speed and the target rotational speed includes: If the rotational speed is greater than or equal to the target rotational speed, then the target resistance is determined based on the current resistance and a first coefficient, wherein the first coefficient is greater than 1; If the rotational speed is less than the target rotational speed, the target resistance is determined based on the current resistance and a second coefficient, where the second coefficient is less than 1.

7. The training method based on a medical lower limb power vehicle according to claim 1, characterized in that, In response to the treatment mode being passive training mode, the motor output power is controlled according to the input target speed.

8. The training method based on a medical lower limb power vehicle according to claim 1, characterized in that, Also includes: Upon completion of training, a training report is generated, which includes: average rotational speed and training time.

9. A training system based on a medical lower limb power vehicle, characterized in that, It includes a processor and a memory, the memory storing computer program instructions, which, when executed by the processor, implement a training method for a medical lower limb power vehicle according to any one of claims 1-8.

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