Control device of myoelectric hand

Abstract

The utility model discloses a control device of a myoelectric hand, which is applied to the field of bionic hand development and comprises a controller and a parameter regulator electrically connected with the controller in a selective adsorption mode, a control unit is arranged in the controller, a touch display screen is arranged on the parameter regulator, the control unit is electrically connected with the touch display screen in a selective mode, and the touch display screen is electrically connected with the controller. The input end of the control unit is electrically connected with an extensor sensor and a flexor sensor which are arranged on muscles, and the output end of the control unit is connected with the bionic flashlight. The bionic hand is simple and easy to use, high in adjusting speed and high in adjusting efficiency, use of the bionic hand cannot be affected by individual differences of users, and various requirements of the users are met; according to the bionic hand, the controller and the parameter adjusting device are arranged in a split mode for control of the bionic hand for the first time, the parameter adjusting device is used for parameter adjustment and control debugging, the controller is placed in the receiving cavity and used for program operation and processing, and the whole bionic hand looks smaller, more durable, attractive and elegant and is deeply loved by users.

Description

Technical Field

[0001] This utility model relates to the development of bionic hands, specifically a control device for a myoelectric hand. Background Technology

[0002] Due to various factors such as work-related injuries, traffic accidents, war, natural disasters, or congenital defects, a large number of people inevitably lose their upper limbs, and a large proportion of them need to be fitted with myoelectrically controlled prosthetic hands.

[0003] Using electromyography (EMG) signals to control the grasping action of a bionic hand is called an electromyographic hand. When the extensor or flexor muscle signals reach a certain amplitude, they will control the grasping of the bionic finger. The opening and closing speed and the speed of the movement of the finger are fixed, and the grip strength after gripping is also fixed, which can easily lead to damage to the fragile items being grasped. Another control method is to use the intensity of the EMG signal to control the speed and grip strength of the finger. This type of electromyographic hand requires amputees to have strong EMG signals. However, a large proportion of upper limb amputees have weak EMG signals due to muscle damage, atrophy, excessive subcutaneous fat, and other reasons, which cannot meet the requirements. They cannot adjust the speed and grip strength of the electromyographic hand by generating stable and changing EMG signals through the contraction of the residual limb muscles.

[0004] Furthermore, most existing prosthetic control systems use factory settings, establishing a correspondence between electromyographic (EMG) signals and the required movement commands. This system cannot be adjusted based on individual user differences. Even when adjustments are made, they are often simple and fuzzy, time-consuming, and ineffective. Consequently, the EMG signals collected from an individual for the same movement differ from the preset EMG signals in the control system. This leads to the control system issuing incorrect commands to the prosthesis, causing the prosthesis's movements to fail to accurately reflect the user's intentions and negatively impacting the user experience. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a control device for a myoelectric hand that can intuitively display the strength of the user's electromyographic signal and adjust the signal parameters as needed. The adjustment efficiency is high, which can meet the various needs of users. Moreover, the parameter adjuster and the controller can be detachably connected by adsorption, which greatly reduces the size of the controller and makes it easier to install in the receiving cavity. The structure of the bionic hand is more compact and easier to wear.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] This utility model includes a controller and a parameter adjuster selectively adsorbed and electrically connected to the controller. The controller is equipped with a control unit, and the parameter adjuster is equipped with a touch screen. The control unit is selectively electrically connected to the touch screen. The input terminal of the control unit is electrically connected to an extensor sensor and a flexor sensor installed on the muscle, respectively. The output terminal of the control unit is connected to a bionic flashlight.

[0008] A further improvement of this utility model is that: the controller is provided with a connector electrically connected to the control unit, and the parameter adjuster is provided with a screen connector electrically connected to the touch screen. The electrical connection between the connector and the screen connector enables data transmission between the control unit and the touch screen.

[0009] A further improvement of this utility model is that the connector is a magnetic connector, and the screen connector is connected to the magnetic connector by a data cable with a magnetic connector at one end, and the other end is connected to the screen connector through a USB interface.

[0010] A further improvement of this utility model is that: the connector is electrically connected to the battery and the control unit respectively; the battery is charged by connecting the connector to the charger with a magnetic connector; and the control unit is connected to the connector by a parameter adjuster with a magnetic connector to realize data communication between the controller and the parameter adjuster.

[0011] A further improvement of this utility model is that the controller is provided with a raised switch.

[0012] A further improvement of this utility model is that the controller is equipped with a buzzer.

[0013] A further improvement of this utility model is that the controller is equipped with an indicator light.

[0014] A further improvement of this utility model is that the parameter adjuster is equipped with a data synchronization switch.

[0015] A further improvement of this utility model is that the data synchronization switch is located on the touch screen.

[0016] The beneficial effects achieved by this utility model due to the adoption of the above technical solution are as follows:

[0017] This invention features a simple structure and novel design, being the first to separate the controller and parameter adjuster. It allows direct input and adjustment of the signal threshold and amplification factor based on the strength of electromyographic signals, providing intuitive control over the bionic hand's grasping motion and speed. Individual user differences do not affect the use of the bionic hand; its signal adjustment speed is fast, its adjustment efficiency is high, and it is simple to use. Each user can adjust it according to their needs, meeting a variety of individual requirements.

[0018] After the adjustment is completed, the controller and the parameter adjuster, which are attached together by the magnetic connector, are removed to separate the controller from the parameter adjuster. The controller then calculates and processes the movements of the bionic hand according to the program settings. Its small size makes it more suitable for storage in the receiving cavity. The entire bionic hand looks more compact, durable, beautiful and elegant, which is very popular with users. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the external structure of the controller of this utility model;

[0020] Figure 2 This is a schematic diagram of the external structure of the parameter adjuster of this utility model;

[0021] Figure 3 This is a schematic diagram of the working circuit structure of the bionic hand of this utility model;

[0022] Figure 4 This is a schematic diagram of the communication status circuit structure between the control unit and the parameter tuner of this utility model;

[0023] Figure 5 This is a schematic diagram of the battery charging state circuit structure of this utility model.

[0024] The components include: 1. Controller; 1-1. Switch; 1-2. Indicator light; 1-3. Buzzer; 1-4. Connector; 1-5. Control unit; 2. Parameter tuner; 2-1. Screen connector; 2-2. Touch screen; 2-3. Data synchronization switch; 3. Extensor sensor; 4. Flexor sensor; 5. Bionic hand; 6. Battery; 7. Charger. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to embodiments:

[0026] A control device for a myoelectric hand, such as Figure 1-5 As shown, it includes a controller 1 and a parameter adjuster 2 that is selectively adsorbed and electrically connected to the controller 1. When the parameter adjuster 2 and the controller 1 are adsorbed together and reliably electrically connected, data communication between the parameter adjuster 2 and the controller 1 can be realized. The data information of the controller 1 is displayed intuitively on the parameter adjuster 2, and the parameter information input on the parameter adjuster 2 is directly synchronized to the control unit 1-5. When the electromyographic signal is weak and below the threshold, which is insufficient to control the movement of the bionic hand 5, the user can amplify the electromyographic signal and adjust the parameter information according to the real-time data information on the parameter adjuster 2 to realize the control of the bionic hand 5. After the parameter adjustment is completed, the controller 1 and the parameter adjuster 2 that are adsorbed together are separated.

[0027] The separate parameter adjuster 2 can be stored and reused easily. At this point, only the controller 1 needs to be placed inside the receiving cavity to achieve effective movement of the bionic hand 5. This facilitates parameter adjustment and significantly reduces the size of the bionic hand 5, making it aesthetically pleasing, durable, and easy to carry. If the controller 1 and parameter adjuster 2 were integrated, the controller would be large, occupying a significant amount of space inside the receiving cavity, resulting in a bulky, unattractive, and inconveniently portable finished product.

[0028] like Figure 2As shown, the parameter adjuster 2 displays the real-time values ​​of the extensor signal collected by the extensor sensor and the flexor signal collected by the flexor sensor. When the extensor signal and / or flexor signal is less than the extensor threshold or flexor threshold, the bionic hand 5 cannot move. It is necessary to input and adjust the required amplification factor and threshold in the extensor amplification and / or flexor amplification, and extensor threshold and / or flexor threshold boxes according to the actual situation. This ensures that the amplified extensor signal and / or flexor signal is greater than the corresponding threshold during muscle movement, allowing the bionic hand 5 to move normally. For example, if the parameter adjuster 2 displays an extensor signal of 10 and an extensor threshold of 50 during muscle movement, the bionic hand 5 cannot move. In this case, an amplification factor of 6 needs to be input in the extensor amplification box, so that the extensor signal is 60, which is greater than the extensor threshold of 50, allowing the bionic hand 5 to move. Alternatively, the threshold can be appropriately reduced; as long as the electromyographic signal is greater than the threshold during muscle movement, the bionic hand 5 can be controlled. The settings of parameter tuner 2 intuitively realize human-computer interaction, making parameter adjustment simple and easy to use, greatly shortening the adjustment time and greatly improving the adjustment efficiency.

[0029] like Figure 4 As shown, the controller 1 contains a control unit 1-5, and the parameter adjuster 2 has a touch screen 2-2. The control unit 1-5 and the touch screen 2-2 are selectively electrically connected. The control unit 1-5 and the touch screen 2-2 are connected together. The control unit 1-5 communicates with the touch screen 2-2 through the electrical connector 1-4 and the screen connector 2-1. The data information in the control unit 1-5 is displayed intuitively on the touch screen 2-2, facilitating intuitive analysis and adjustment of the data information in the control unit 1, and allowing for adjustment of the movement of the bionic hand 5 as needed. After the data parameters are adjusted and the bionic hand 5 is in normal operation, the control unit 1-5 can be separated from the touch screen 2-2, ensuring the small size of the controller 1 and the aesthetics and durability of the bionic hand 5.

[0030] like Figure 3 As shown, the input terminals of the control unit 1-5 are electrically connected to the extensor sensor 3 and the flexor sensor 4, which are respectively installed on the muscle. The output terminal of the control unit 1-5 is electrically connected to the bionic hand 5. The extensor signal detected by the extensor sensor 3 can control the extension of the bionic hand 5, and the flexor signal detected by the flexor sensor 4 can control the bending of the bionic hand 5. Under the action of the control unit 1-5, the two combine to control the grasping action of the bionic hand 5. The control unit 1-5 is an intelligent control unit, which is pre-programmed to control the grasping speed, shifting, locking and other functions of the bionic hand 5 according to the program.

[0031] like Figure 1 and Figure 2As shown, the controller 1 is equipped with a connector 1-4 electrically connected to the control unit 1-5, and the parameter adjuster 2 is equipped with a screen connector 2-1 electrically connected to the touch screen 2-2. The electrical connection between connector 1-4 and screen connector 2-1 enables data transmission and power supply between the control unit 1-5 and the touch screen 2-2. Data information within the control unit 1-5 is displayed intuitively on the touch screen 2-2 through connector 1-4 and screen connector 2-1. The parameter information set and adjusted on the parameter adjuster 2 can be transmitted to the control unit 1-5 in real time to participate in the motion control of the bionic hand 5.

[0032] like Figure 2 As shown, the parameter tuner 2 is equipped with a data synchronization switch 2-3, which is located on the touch screen 2-2. Clicking the data synchronization switch 2-3 button enables real-time data communication between the controller 1 and the parameter tuner 2.

[0033] like Figure 1 As shown, connector 1-4 is a magnetic connector. This magnetic connector is magnetic and can achieve electrical connection using the principle of magnetic attraction. This is a new type of electrical connection, making connection and disassembly more convenient and reliable. Connector 1-4 is a magnetic connector; electrical connection is achieved simply by the magnetic connector and the magnetic plug being attracted to each other. The screen connector 2-1 is connected to the magnetic connector via a data cable with a magnetic plug at one end, achieving a perfect electrical connection. The other end is connected to the screen connector 2-1 via a USB interface. Connector 1-4 is electrically connected to control unit 1-5, and then the parameter adjuster 2 with a magnetic plug is attracted to connector 1-4, completing the reliable electrical connection between connector 1-4 and screen connector 2-1, enabling data communication between controller 1 and parameter adjuster 2.

[0034] like Figure 5 As shown, the connector 1-4 is connected to the battery 6. The battery 6 is placed in the receiving cavity to power the entire device. The battery 6 is charged by the charger 7 with a magnetic connector. The magnetic connector is magnetically connected to the connector 1-4 to facilitate the charging of the battery 6 and the disconnection and separation of the charger 7 from the battery 6 after charging is completed.

[0035] like Figure 1 As shown, the controller 1 is equipped with a raised switch 1-1, which facilitates blind operation by the user.

[0036] The controller 1 is equipped with a buzzer 1-3. When the battery is low, the gear is shifted, the speed is adjusted, or the device is locked, the buzzer 1-3 can be controlled to sound once, twice, three times, or continuously according to the internal program of the control unit 1-5. The controller 1 is equipped with an indicator light 1-2. When the indicator light 1-2 is lit, it indicates that the bionic hand 5 is in working condition.

[0037] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are by no means intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description; it is impossible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom still fall within the protection scope of this invention.

Claims

1. A control device for a myoelectric hand, characterized by: The device includes a controller (1) and a parameter adjuster (2) selectively adsorbed and electrically connected to the controller (1). The controller (1) is equipped with a control unit (1-5). The parameter adjuster (2) is equipped with a touch screen (2-2). The control unit (1-5) is selectively electrically connected to the touch screen (2-2). The input terminal of the control unit (1-5) is electrically connected to the extensor sensor (3) and flexor sensor (4) set on the muscle, respectively. The output terminal of the control unit (1-5) is electrically connected to the bionic hand (5).

2. The control device for a myoelectric hand according to claim 1, characterized in that: The controller (1) is provided with a connector (1-4) electrically connected to the control unit (1-5), and the parameter tuner (2) is provided with a screen connector (2-1) electrically connected to the touch screen (2-2). The connector (1-4) and the screen connector (2-1) are electrically connected to realize data transmission between the control unit (1-5) and the touch screen (2-2).

3. The control device for a myoelectric hand according to claim 2, characterized in that: The connector (1-4) is a magnetic connector. The screen connector (2-1) is connected to the magnetic connector by a data cable with a magnetic connector at one end, and the other end is connected to the screen connector (2-1) through a USB interface.

4. The control device for a myoelectric hand according to claim 3, characterized in that: The connectors (1-4) are electrically connected to the battery (6) and the control unit (1-5) respectively. The battery (6) is connected to the connectors (1-4) through the charger (7) with the magnetic connector to charge the battery (6). The control unit (1-5) is connected to the connectors (1-4) through the parameter tuner (2) with the magnetic connector to realize data communication between the controller (1) and the parameter tuner (2).

5. The control device for a myoelectric hand according to claim 2, characterized in that: The controller (1) is provided with a raised switch (1-1).

6. The control device for a myoelectric hand according to claim 5, characterized in that: The controller (1) is equipped with a buzzer (1-3).

7. The control device for a myoelectric hand according to claim 6, characterized in that: The controller (1) is equipped with indicator lights (1-2).

8. The control device for a myoelectric hand according to claim 2, characterized in that: The parameter adjuster (2) is equipped with a data synchronization switch (2-3).

9. The control device for a myoelectric hand according to claim 8, characterized in that: The data synchronization switch (2-3) is located on the touch screen (2-2).

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