Upper limb push training device and muscle strength detection method and device

Abstract

The present application discloses an upper limb push training device and a muscle strength detection method and device; it relates to the technical field of medical devices. When the host computer of the present application receives a push rod movement stop signal, it obtains the first position information of the push rod detected by the distance sensor, controls the servo reducer to apply a reverse force to the push rod through the sliding mechanism; when the push rod reversely moves to meet the preset detection conditions, it controls the servo reducer to hold the brake; and obtains the detected muscle strength value according to the monitoring data of the pull pressure sensor during the movement of the push rod. The push rod is directly rigidly connected to the pull pressure sensor, and a DC servo motor is used to apply force to the test object. The pressure data monitored by the pull pressure sensor can accurately obtain the pressure value felt by the test object during the test, and there is no need to use a counterweight block, which solves the problems of low detection accuracy using a counterweight block, easy loss of the counterweight block, and unsafe use of the counterweight block by the patient.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to an upper limb press trainer and a muscle strength detection method and device. Background Art

[0002] For patients with decreased upper limb muscle strength, it is necessary to test the maximum strength level of the patient's upper limb muscles, monitor the changes in upper limb muscle strength during the rehabilitation process, understand the improvement of upper limb muscle strength, and adjust the treatment plan in time.

[0003] Traditional muscle strength assessment methods are mostly in the form of counterweights. Counterweight torque sensors are usually installed on a rotatable shaft, with one end connected to the counterweight and the other end connected to the human limb. When the muscle contracts and generates torque, it will cause the shaft to rotate by measuring the object acting on the shaft. The torque sensor indirectly assesses the strength of the muscle by measuring the torque generated by this rotation.

[0004] The muscle force value is obtained by relying solely on the torque sensor at the front end. Due to the resistance of the transmission system itself and the different installation precision, the measured muscle force value has low accuracy.

[0005] It can be seen that how to solve the low accuracy of measuring muscle strength values ​​is a technical problem that needs to be solved urgently by people in this field. Summary of the invention

[0006] The purpose of this application is to provide an upper limb press trainer and a muscle strength detection method and device to solve the problem of low accuracy in measuring muscle strength values.

[0007] In order to solve the above technical problems, the present application provides an upper limb press training device, comprising:

[0008] Distance sensor, tension and pressure sensor, sliding mechanism, servo reducer, push rod, host computer;

[0009] The host computer is connected with the distance sensor, the tension and pressure sensor, and the servo reducer;

[0010] The sliding mechanism is fixedly connected to the push rod, the output shaft of the servo reducer is connected to the sliding mechanism, and the servo reducer drives the push rod to move through the sliding mechanism;

[0011] When the upper computer receives the push rod movement stop signal, it obtains the first position information of the push rod detected by the distance sensor, and controls the servo reducer to apply a reverse force to the push rod through the sliding mechanism; when the push rod reverse movement meets the preset detection conditions, the servo reducer is controlled to hold the brake; the detection muscle force value is obtained according to the monitoring data of the pull and pressure sensor during the movement of the push rod.

[0012] Preferably, in the above-mentioned upper limb press trainer, the sliding mechanism comprises: a guide rail, a slider, and a bottom plate;

[0013] The guide rail is fixed on the bottom plate, a slider is slidably arranged on the guide rail, and a push rod is connected with the slider.

[0014] Preferably, the upper limb press trainer further comprises: a synchronous pulley and a synchronous belt;

[0015] The servo reducer is fixed to the second end of the base plate, an active synchronous pulley is fixedly connected to the output shaft of the servo reducer, a passive synchronous pulley is fixedly installed on the first end of the base plate, an open synchronous belt is wound around the active synchronous pulley and the passive synchronous pulley, both ends of the opening of the synchronous belt are connected by a connecting plate, one end of the pull pressure sensor is fixedly connected to the connecting plate, and the other end of the pull pressure sensor is fixedly connected to the push rod.

[0016] Preferably, in the upper limb press trainer, the distance sensor is a laser distance sensor, and further comprises: a distance sensor baffle;

[0017] The distance measuring sensor baffle is arranged on the sliding block, the laser distance measuring sensor is arranged on the second end of the bottom plate, and the laser distance measuring sensor is connected to the upper computer.

[0018] Preferably, the upper limb press trainer further comprises: a human-computer interaction interface;

[0019] The human-computer interaction interface is connected to the host computer and is used to display the detected muscle strength value.

[0020] In order to solve the above technical problems, the present application also provides a muscle strength detection method, which is applied to the above upper limb push trainer, and the method includes:

[0021] When a push rod movement stop signal is received, first position information of the push rod detected by the distance sensor is acquired;

[0022] Control the servo reducer to apply reverse force to the push rod through the sliding mechanism;

[0023] Based on the first position information, when the push rod moves in the opposite direction and meets the preset detection condition, the servo reducer brake is controlled;

[0024] The muscle force value is obtained according to the monitoring data of the tension and pressure sensor during the movement of the push rod. Preferably, in the above muscle force detection method, when a push rod movement stop signal is received, the method comprises:

[0025] After the push rod moves, it is determined whether the push rod has been stationary for more than a preset time;

[0026] If so, it is determined that a push rod movement stop signal is currently received.

[0027] Preferably, in the above muscle strength detection method, the muscle strength value is obtained according to the monitoring data of the tension and pressure sensor during the movement of the push rod, including:

[0028] Acquire monitoring data of the tension and pressure sensors during the movement of the push rod;

[0029] The maximum value in the monitoring data is taken as the detected muscle strength value.

[0030] Preferably, in the above muscle strength detection method, based on the first position information, when the push rod moves in the opposite direction and meets the preset detection condition, the servo reducer brake is controlled, including:

[0031] monitoring the displacement distance of the push rod in real time according to the first position information;

[0032] When the displacement distance reaches the preset displacement value, the servo reducer brake is controlled.

[0033] In order to solve the above technical problems, the present application also provides a muscle strength detection device, which is applied to the above upper limb push trainer, including:

[0034] A receiving module, configured to obtain first position information of the push rod detected by the distance sensor when receiving a push rod movement stop signal;

[0035] The pressure module is used to control the servo reducer to apply reverse force to the push rod through the sliding mechanism;

[0036] A detection module, configured to control the servo reducer brake when the push rod moves in the opposite direction and satisfies a preset detection condition based on the first position information;

[0037] The analysis module is used to obtain the detected muscle force value according to the monitoring data of the tension and pressure sensor during the movement of the push rod.

[0038] The upper limb push training device provided by the present application includes: a distance sensor, a pulling pressure sensor, a sliding mechanism, a servo reducer, a push rod, and a host computer; the host computer is connected with the distance sensor, the pulling pressure sensor, and the servo reducer; the sliding mechanism is fixedly connected with the push rod, the servo reducer output shaft is connected with the sliding mechanism, and the servo reducer drives the push rod to move through the sliding mechanism; when the host computer receives the push rod movement stop signal, the first position information of the push rod detected by the distance sensor is obtained, and the servo reducer is controlled to apply a reverse force to the push rod through the sliding mechanism; when the push rod reversely moves to meet the preset detection conditions, the servo reducer brake is controlled; according to the monitoring data of the pulling pressure sensor during the movement of the push rod, the muscle force value is detected. The push rod of the present invention is directly rigidly connected with the pulling pressure sensor, and a DC servo motor is used to apply force to the test object. The pressure data monitored by the pulling pressure sensor can accurately obtain the pressure value felt by the test object during the test, and there is no need to use a counterweight, which solves the problems of low detection accuracy using a counterweight, easy loss of the counterweight, and unsafe use of the counterweight by the patient.

[0039] In addition, the present application also provides a muscle strength detection method and device, which corresponds to the above-mentioned upper limb push trainer and has the same effect as above. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0041] Figure 1 A schematic diagram of an upper limb press training device provided in an embodiment of the present application;

[0042] Figure 2 A top view of an upper limb press trainer provided in an embodiment of the present application;

[0043] Figure 3 A flowchart of a muscle strength detection method provided in an embodiment of the present application;

[0044] Figure 4 A structural diagram of a muscle strength detection device provided in an embodiment of the present application.

[0045] Reference numerals:

[0046] 11-laser distance measuring sensor; 12-tension pressure sensor; 13-servo reducer; 14-push rod; 15-guide rail; 16-synchronous pulley; 17-slider; 18-synchronous belt; 19-base plate; 20-distance measuring sensor baffle; 21-servo driver; 22-power module. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0048] The core of this application is to provide an upper limb press trainer and a muscle strength detection method and device.

[0049] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0050] With the advancement of medical technology and the development of rehabilitation medicine, the demand for accurate assessment of muscle strength and rehabilitation training is increasing. This muscle strength detection system can meet the needs of accurate and quantitative assessment of muscle strength in the medical and rehabilitation fields.

[0051] Traditional muscle strength assessment methods are mostly in the form of counterweights, which are easy to lose and unsafe for patients to use. Factors such as the system's own friction and inertia make the assessment results subjective. Muscle strength assessment methods usually require professional equipment and personnel, are costly, and are not intuitive and accurate enough.

[0052] In order to improve the accuracy of muscle strength detection, the present application embodiment provides an upper limb press training device, Figure 1 A schematic diagram of an upper limb press training device provided in an embodiment of the present application, such as Figure 1 As shown, including:

[0053] Distance sensor 11, tension and pressure sensor 12, sliding mechanism, servo reducer 13, push rod 14, host computer;

[0054] The host computer is connected with the distance sensor 11, the tension and pressure sensor 12, and the servo reducer 13;

[0055] The sliding mechanism is fixedly connected to the push rod 14, the output shaft of the servo reducer 13 is connected to the sliding mechanism, and the servo reducer 13 drives the push rod to move through the sliding mechanism;

[0056] When the upper computer receives the signal that the push rod 14 stops moving, it obtains the first position information of the push rod 14 detected by the distance sensor 11, and controls the servo reducer 13 to apply a reverse force to the push rod 14 through the sliding mechanism; when the reverse movement of the push rod 14 meets the preset detection conditions, the servo reducer 13 is controlled to brake; the muscle force value is detected according to the monitoring data of the tension and pressure sensor 12 during the movement of the push rod 14.

[0057] In this embodiment, the sliding mechanism drives the push rod 14 to move, and the tester pushes the push rod with the left arm or the right arm when testing. This embodiment does not limit the specific structure of the sliding mechanism, which can be a gear sliding mechanism or a pulley sliding mechanism, and can be designed according to actual needs.

[0058] Preferably, the sliding mechanism comprises: a guide rail 15, a slider 17, and a bottom plate 19;

[0059] The guide rail 15 is fixed on the bottom plate 19 , a slider 17 is slidably arranged on the guide rail 15 , and the push rod 14 is connected to the slider 17 .

[0060] The servo reducer 13 mentioned in this embodiment drives the push rod 14 to move through the sliding mechanism, that is, the host computer can drive the servo reducer 13 to actively move the push rod 14 to form an antagonistic force with the tester to test the muscle strength value.

[0061] As a preferred embodiment, it also includes a synchronous pulley 16 and a synchronous belt 18;

[0062] The servo reducer 13 is fixed to the second end of the base plate 19, and an active synchronous pulley 16 is fixedly connected to the output shaft of the servo reducer 13. A passive synchronous pulley 16 is fixedly installed on the first end of the base plate 19. An open synchronous belt 18 is wound around the active synchronous pulley 16 and the passive synchronous pulley 16. The two open ends of the synchronous belt 18 are connected by a connecting plate. One end of the pull pressure sensor 12 is fixedly connected to the connecting plate, and the other end of the pull pressure sensor 12 is fixedly connected to the push rod 14.

[0063] In this embodiment, the sliding mechanism is driven by the synchronous pulley 16 and the synchronous belt 18 , which further drives the push rod 14 .

[0064] Figure 2 A top view of an upper limb press trainer provided in an embodiment of the present application.

[0065] like Figure 1 , 2 As shown, in this embodiment, the base plate 19 serves as the foundation of the entire training device, and the guide rail 15 and other components are fixedly mounted thereon. The guide rail 15 is used to provide a sliding path for the slider 17. The slider 17 slides on the guide rail 15 and is connected to the push rod 14 to transmit the movement of the push rod 14. The push rod 14 is the main part of the force applied by the test object. When the test object is tested, a force is applied to the push rod 14 to make it move along the guide rail 15.

[0066] The open synchronous belt 18 is tightened by the active synchronous pulley 16 and the passive synchronous pulley 16. The connecting plate is used to connect the two ends of the open synchronous belt 18 to form a closed loop so that the synchronous belt 18 can remain closed when subjected to tension or pressure. The active synchronous pulley 16 is connected to the output shaft of the servo reducer 13 to drive the synchronous belt 18. The passive synchronous pulley 16 is fixed to the other end of the bottom plate 19 and supports the synchronous belt 18 together with the active synchronous pulley 16.

[0067] One end of the tension and pressure sensor 12 is fixedly connected to the connecting plate, and the other end is fixedly connected to the push rod 14 , so that the tension or pressure exerted on the push rod 14 can be measured.

[0068] The distance sensor 11 is fixed on the bottom plate 19, and is used to measure the position of the push rod 14, especially the position when the push rod 14 stops moving. Further, the displacement distance of the push rod 14 can be measured. As a preferred embodiment, the distance sensor 11 is a laser distance sensor. Preferably, it also includes a distance sensor baffle 20, which is arranged on the slider, and the laser distance sensor is arranged at the second end of the bottom plate, and the laser distance sensor is connected to the host computer. It is used for positioning measurement of the laser distance sensor.

[0069] The servo reducer 13 is a precision reduction device, which is mainly used to reduce the rotation speed of the motor to a speed suitable for work needs, and can also amplify the output torque of the motor to meet work needs. The servo reducer 13 is usually composed of a servo motor and a reducer, wherein the servo motor is a motor that can accurately control the speed and torque, and the reducer is a device that reduces the speed of the motor and amplifies the torque.

[0070] In this embodiment, the servo reducer 13 drives the open synchronous belt 18 via the active synchronous belt pulley 16 , thereby controlling the movement of the push rod 14 .

[0071] In this embodiment, the host computer serves as a control center, connected to the servo reducer 13 and the distance sensor, receives signals and issues control instructions. Figure 2 As shown, it also includes a servo driver 21 for driving the servo reducer 13.

[0072] It should be noted that the trainer also includes a power module 22 for supplying power to the host computer, the servo reducer 13 , the distance sensor 11 , and the tension and pressure sensor 12 .

[0073] When a training test is required, the test subject needs to actively use the left arm or the right arm to apply force to the push rod 14 to move it along the guide rail 15 until the push rod 14 is pushed to its maximum displacement.

[0074] The data provided by the distance sensor 11 is used to determine the first position information of the push rod 14. The upper computer controls the servo reducer 13 to output torque in torque mode, and applies a reverse force to the patient to simulate the process of muscle resistance. The patient needs to try his best to operate. When the push rod 14 moves in the reverse direction and meets the preset detection conditions, it is considered that the patient's upper limb strength has reached the limit. The upper computer issues a stop command, and the upper computer controls the servo reducer 13 to brake and stop applying the reverse force. The pull pressure sensor 12 transmits the resistance force applied by the patient to the push rod 14 to the upper computer. It should be noted that when the push rod 14 moves in the reverse direction and meets the preset detection conditions, it can be when the displacement distance meets the preset displacement value, or when a stop signal is received.

[0075] During the whole process, the tension and pressure sensor 12 continuously monitors and records the tension or pressure data of the push rod 14. The muscle strength value can be obtained by monitoring the data. For example, the maximum value can be used as the muscle strength value, and the average value can also be used as the muscle strength value.

[0076] The upper limb press trainer provided by the embodiment of the present application includes: a distance sensor 11, a tension and pressure sensor 12, a sliding mechanism, a servo reducer 13, a push rod 14, and a host computer; the host computer is connected to the distance sensor 11, the tension and pressure sensor 12, and the servo reducer 13; the sliding mechanism is fixedly connected to the push rod 14, the output shaft of the servo reducer 13 is connected to the sliding mechanism, and the servo reducer 13 drives the push rod to move through the sliding mechanism; when the host computer receives a stop signal of the push rod 14, the first position information of the push rod 14 detected by the distance sensor 11 is obtained, and the servo reducer 13 is controlled to apply a reverse force to the push rod 14 through the sliding mechanism; when the reverse movement of the push rod 14 meets the preset detection condition, the servo reducer 13 is controlled to brake; and the detected muscle strength value is obtained according to the monitoring data of the tension and pressure sensor 12 during the movement of the push rod 14. The push rod 14 of the present invention is directly rigidly connected to the tension and pressure sensor 12, and cooperates with a DC servo motor to apply force to the test object. The pressure data monitored by the tension and pressure sensor 12 can accurately obtain the pressure value felt by the test object during the test, without the need to use a counterweight block, thereby solving the problems of low detection accuracy when using a counterweight block, easy loss of the counterweight block, and unsafe use of the counterweight block by the patient.

[0077] As a preferred embodiment, it also includes: a human-computer interaction interface;

[0078] The human-computer interaction interface is connected to the host computer and is used to display the detected muscle strength value.

[0079] The test results are displayed intuitively to the test subjects, making it convenient for users and doctors to view and analyze.

[0080] It also includes: a stop button of the push rod 14; the stop button of the push rod 14 is connected to the host computer, and when the stop button of the push rod 14 is operated, it indicates that a stop signal of the movement of the push rod 14 is received.

[0081] Correspondingly, the embodiment of the present application also provides a muscle strength detection method, which is applied to the above-mentioned upper limb press training device. Figure 3 A flow chart of a muscle strength detection method provided in an embodiment of the present application is as follows: Figure 3 As shown, the method includes:

[0082] S11: when a push rod movement stop signal is received, obtaining first position information of the push rod detected by the distance sensor;

[0083] S12: Control the servo reducer to apply reverse force to the push rod through the sliding mechanism;

[0084] S13: When the push rod moves in the opposite direction and meets a preset detection condition based on the first position information, the servo reducer brake is controlled;

[0085] S14: Obtain the detected muscle force value according to the monitoring data of the tension and pressure sensor during the movement of the push rod.

[0086] The muscle strength detection method provided by the embodiment of the present application is applied to the above-mentioned upper limb push training device, and the method includes: when receiving a signal to stop the movement of the push rod 14, obtaining the first position information of the push rod 14 detected by the distance sensor 11; controlling the servo reducer 13 to apply a reverse force to the push rod 14 through the synchronous pulley 16; when the reverse movement of the push rod 14 meets the preset detection conditions, the servo reducer 13 is controlled to hold the brake; and the muscle strength value is detected according to the monitoring data of the tension and pressure sensor 12 during the movement of the push rod 14. The push rod 14 of the present invention is directly rigidly connected to the tension and pressure sensor 12, and a DC servo motor is used to apply force to the test object. The pressure data monitored by the tension and pressure sensor 12 can accurately obtain the pressure value felt by the test object during the test, without the need to use a counterweight, which solves the problems of low detection accuracy using a counterweight, easy loss of the counterweight, and unsafe use of the counterweight by the patient.

[0087] In a specific embodiment, receiving a signal for stopping the movement of the push rod 14 includes:

[0088] After the push rod 14 moves, it is determined whether the push rod 14 has been stationary for more than a preset time;

[0089] If yes, it is determined that a signal for stopping the movement of the push rod 14 is currently received.

[0090] In this embodiment, whether the push rod 14 has reached the maximum displacement is determined by the time the push rod 14 remains stationary. For example, when the push rod 14 starts to move and remains stationary at a certain position for 3 seconds, it is considered that the test object has pushed the push rod 14 to its maximum displacement, and it is determined that the push rod 14 movement stop signal is currently received, and the next test action is performed. The user can also send a push rod 14 stop signal to the upper computer by clicking.

[0091] Specifically, the muscle force value is obtained according to the monitoring data of the tension and pressure sensor 12 during the movement of the push rod 14, including:

[0092] Acquire monitoring data of the tension and pressure sensor 12 during the movement of the push rod 14;

[0093] The maximum value in the monitoring data is taken as the detected muscle strength value.

[0094] During the evaluation process, the maximum value uploaded by the tension pressure sensor 12 to the host computer is the maximum muscle strength value of the patient's upper limb.

[0095] Specifically, the muscle force detection method, when the push rod 14 moves in the reverse direction and meets the preset detection conditions, controls the servo reducer 13 to hold the brake, including:

[0096] Monitoring the displacement distance of the push rod 14 in real time according to the first position information;

[0097] When the displacement distance reaches the preset displacement value, the servo reducer 13 is controlled to brake.

[0098] During the assessment, the patient needs to use his left or right arm to push the push rod 14 to his maximum displacement, and the distance sensor 11 records the position at this time. The patient needs to hold the push rod 14. At this time, the servo reducer 13 torque mode applies a reverse force to the patient's arm through the synchronous pulley 16. The patient needs to try his best to operate it. When the push rod 14 slides backward a certain distance (2cm or 5cm, etc., this value can be adjusted according to actual conditions), the servo reducer 13 brakes, and it is judged that the assessment is completed. During the evaluation process, the distance sensor 11 is used to test and record the maximum displacement of the patient's push rod 14, and the data is uploaded to the host computer to record the position of the push rod 14 at this time; the servo reducer 13 outputs torque in torque mode to apply a reverse force to the patient, and the pull pressure sensor 12 uploads the resistance force applied by the patient to the push rod 14 to the host computer. When the push rod 14 slides backward for a certain distance (2cm or 5cm, etc., this value can be adjusted according to actual conditions), the distance sensor 11 reports the displacement information to the host computer. At this time, it is considered that the patient's upper limb strength has reached its limit, and the host computer issues a stop command, the servo motor is braked, and the evaluation is completed; during the evaluation process, the maximum value uploaded to the host computer by the pull pressure sensor 12 is the patient's maximum upper limb muscle strength value.

[0099] In the above embodiments, the muscle strength detection method is described in detail, and the present application also provides embodiments corresponding to the muscle strength detection device. It should be noted that the present application describes the embodiments of the device part from two perspectives, one is based on the functional module perspective, and the other is based on the hardware perspective.

[0100] From the perspective of functional modules, Figure 4 A structural diagram of a muscle strength detection device provided in an embodiment of the present application, such as Figure 4 As shown, a muscle strength detection device is applied to the upper limb push training device, comprising:

[0101] The receiving module 31 is used to obtain the first position information of the push rod 14 detected by the distance sensor 11 when receiving the movement stop signal of the push rod 14;

[0102] A pressure module 32, used to control the servo reducer 13 to apply a reverse force to the push rod through a sliding mechanism;

[0103] The detection module 33 is used to control the servo reducer 13 to brake when the push rod 14 moves in the reverse direction and meets the preset detection condition;

[0104] The analysis module 34 is used to obtain the detected muscle force value according to the monitoring data of the tension and pressure sensor 12 during the movement of the push rod 14.

[0105] Since the embodiments of the apparatus part correspond to the embodiments of the method part, please refer to the description of the embodiments of the method part for the embodiments of the apparatus part, which will not be repeated here.

[0106] The upper limb press trainer and muscle strength detection method and device provided by the present application are introduced in detail above. The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

[0107] It should also be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

Claims

1. A muscle strength detection method, characterized in that: The invention is applied to an upper limb press training device, the upper limb press training device comprising: a distance sensor (11), a tension and pressure sensor (12), a sliding mechanism, a servo reducer (13), a push rod (14), and a host computer; the host computer is connected to the distance sensor (11), the tension and pressure sensor (12), and the servo reducer (13); the sliding mechanism is fixedly connected to the push rod (14), the output shaft of the servo reducer (13) is connected to the sliding mechanism, and the servo reducer (13) drives the push rod to move through the sliding mechanism; the sliding mechanism comprises: a guide rail (15), a slider (17), and a base plate (19); the guide rail (15) is fixed on the base plate (19), the slider (17) is slidably arranged on the guide rail (15), and the push rod (14) is connected to the slider (17); and the device also comprises: a synchronous pulley and a synchronous belt (18); the servo reducer (13) is fixed on the base plate (19) and the slider (17) is slidably arranged on the guide rail (15), and the push rod (14) is connected to the slider (17); ), an active synchronous pulley is fixedly connected to the output shaft of the servo reducer (13), a passive synchronous pulley is fixedly installed on the first end of the base plate (19), an open synchronous belt (18) is wound around the active synchronous pulley and the passive synchronous pulley, the two open ends of the synchronous belt (18) are connected via a connecting plate, one end of the tension and pressure sensor (12) is fixedly connected to the connecting plate, and the other end of the tension and pressure sensor (12) is fixedly connected to the push rod (14); the distance sensor (11) is a laser distance sensor, and further comprises: a distance sensor baffle (20); the distance sensor baffle (20) is arranged on the slider (17), the laser distance sensor is arranged on the second end of the base plate (19), and the laser distance sensor is connected to the host computer; further comprises: a human-computer interaction interface; the human-computer interaction interface is connected to the host computer and is used to display the detected muscle force value; The method comprises: When the host computer receives a signal that the push rod (14) stops moving, the host computer acquires first position information of the push rod (14) detected by the distance sensor (11); Controlling the servo reducer (13) to apply a reverse force to the push rod (14) via a sliding mechanism; Based on the first position information, when the push rod (14) moves in the opposite direction and satisfies a preset detection condition, the servo reducer (13) is controlled to brake; Obtaining a detected muscle force value according to data monitored by the tension and pressure sensor (12) during the movement of the push rod (14); The step of receiving a signal for stopping the movement of the push rod (14) comprises: After the push rod (14) moves, determining whether the push rod (14) remains stationary for more than a preset time; If so, it is determined that a push rod (14) movement stop signal is currently received; The muscle force value is obtained by monitoring data from the tension and pressure sensor (12) during the movement of the push rod (14), including: Acquiring monitoring data of the tension and pressure sensor (12) during the movement of the push rod (14); The maximum value in the monitoring data is used as the detected muscle strength value; Wherein, when the push rod (14) moves in the opposite direction and satisfies a preset detection condition based on the first position information, the servo reducer (13) is controlled to brake, comprising: monitoring the displacement distance of the push rod (14) in real time according to the first position information; When the displacement distance reaches a preset displacement value, the servo reducer (13) is controlled to brake.

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