Artificial limb socket motion data acquisition device

Abstract

The invention discloses an artificial limb receiving cavity motion data acquisition device, and belongs to the field of data acquisition. The device comprises an inertial sensor used for collecting acceleration information and angular velocity information of an artificial limb receiving cavity; the data storage module is used for storing data information acquired by the inertial sensor; the data processing module is used for preprocessing the information stored in the data storage module; and the power supply module is used for supplying power to the inertial sensor, the data storage module and the data processing module.

Description

Technical Field

[0001] This invention relates to the field of data acquisition, and in particular to a device for acquiring motion data of a prosthesis receiving cavity. Background Technology

[0002] According to a report by the International Labour Organization, the total number of disabled people worldwide has exceeded 700 million, accounting for approximately 10% of the world's total population. Amputees can regain mobility and appearance by installing prostheses, which can, to a certain extent, replace the physiological functions and appearance of the amputated area. The prosthesis socket connects the prosthesis to the patient's residual limb, and it is in direct contact with the residual limb. The rationality of its structural design directly affects the comfort and functionality of the prosthesis. The residual limb is subjected to the force of the prosthesis socket for a long time, which can easily cause damage to the epidermis and muscles at the wearing site, leading to infection and deterioration of the condition at the amputation site. Currently commercialized intelligent bionic prostheses can significantly improve the gait of amputees and greatly help them resume daily activities. However, because their prosthesis socket structure is fixed, the impact of individual movement differences on the comfort of prosthesis use is not considered, resulting in a low tolerance for individual differences at the amputation site and a sharp decline in user experience. Therefore, when customizing individual prosthesis sockets, it is necessary to collect individual movement data to further customize the prosthesis socket based on the movement data, thereby improving the prosthesis wearing experience for disabled individuals. Summary of the Invention

[0003] In view of the above situation, in order to overcome the shortcomings of traditional prostheses that do not take into account the impact of individual movement differences on the comfort of prosthesis use, the present invention proposes a prosthesis receiving cavity motion data acquisition device, which can effectively solve the problem of traditional prostheses not taking into account individual movement differences.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A device for acquiring motion data of a prosthesis receiving cavity, comprising:

[0006] (1) Inertial sensor;

[0007] (2) Data storage module;

[0008] (3) Data processing module;

[0009] (4) Power supply module.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] This invention uses an inertial sensor to collect motion information from prosthesis wearers in real time, and performs noise reduction on the motion information through preprocessing, thereby improving the accuracy of real-time motion measurement. It adopts a modular design, making it simple to operate and convenient to collect data. Attached Figure Description

[0012] Figure 1 This is a block diagram of the components of the present invention. Detailed Implementation

[0013] This invention discloses a motion data acquisition device for a prosthesis receiving cavity. The device is used to collect motion information of the prosthesis receiving cavity, and the specific measurement parameters include: x, y, z axial acceleration and x, y, z axial angular acceleration.

[0014] The device includes: an inertial sensor, a data storage module, a data processing module, and a power supply module.

[0015] Inertial sensors include triaxial accelerometers and triaxial angular velocity sensors. The triaxial accelerometer measures the body's acceleration during movement; the acceleration in the x-direction can be used to detect the prosthesis's gait, the acceleration in the y-direction can be used to detect the prosthesis's steering, and the acceleration in the z-direction can be used to detect the prosthesis's vertical swing speed. The triaxial angular velocity sensor measures the angular velocity of the prosthesis in the x, y, and z directions during movement.

[0016] The data storage module is connected to the inertial sensor and is used to store the data information collected by the inertial sensor.

[0017] A data processing module, connected to the data storage module, is used to preprocess the information stored in the data storage module. A moving average filter is used to filter various noises in the motion data.

[0018] The formula for moving average filtering is:

[0019]

[0020] In the above formula, the filter window length is an odd number L = 2N + 1, where L represents the output value of the moving average filter at point i, and N represents the signal sample value at point i.

[0021] A power supply module, connected to the inertial sensor, the data storage module, and the data processing module, is used to supply power to these components. It converts external input voltage into the voltage required by the inertial sensor, data storage module, and data processing module.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A device for acquiring motion data of a prosthesis receiving cavity, characterized in that, include: Inertial sensors are used to collect acceleration and angular velocity information of the prosthesis receiving cavity; A data storage module, connected to the inertial sensor, is used to store the data information collected by the inertial sensor; A data processing module, connected to the data storage module, is used to preprocess the information stored in the data storage module; A power supply module, connected to the inertial sensor, the data storage module, and the data processing module, is used to supply power to the inertial sensor, the data storage module, and the data processing module.

Images