Gait collection device and method

Abstract

The invention provides a gait acquisition device and method. The gait collecting device comprises a shell, a triggering module arranged in the shell and a processing module electrically connected with the triggering module. The trigger module comprises an acquisition board and a trigger unit arranged on the acquisition board, and the trigger unit can be triggered by external force to send out a trigger signal; an avoiding hole corresponding to the triggering unit is formed in the shell, so that the triggering unit can be triggered by external force; the processing module is configured to convert the trigger signal into position information of the trigger unit after receiving the trigger signal. According to the gait acquisition device, the gait acquisition accuracy can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of rehabilitation devices, and in particular to a gait acquisition device. The present invention also relates to a gait acquisition method using the gait acquisition device. Background Art

[0002] Clinical gait assessment is an important part of rehabilitation medicine and the diagnosis of motor dysfunction. It provides an objective basis for disease diagnosis, rehabilitation program formulation and efficacy evaluation through quantitative analysis of patients' walking posture, gait cycle, stride, speed and other parameters. Traditional clinical gait assessment mainly uses scale assessment methods. Although these scales can reflect the gait characteristics of patients to a certain extent, their assessment process has obvious limitations: first, scale assessment is highly dependent on the professional experience and subjective judgment of the assessor, and scoring deviations are prone to occur between different assessors, resulting in insufficient repeatability and objectivity of the assessment results; second, scale assessment requires patients to actively cooperate to complete specific actions. For patients with stroke sequelae, Parkinson's disease or severe motor dysfunction, some assessment items may not be completed smoothly due to insufficient cooperation; in addition, traditional scale assessment requires manual recording, analysis and scoring. The whole process is time-consuming and inefficient, and it is difficult to achieve real-time data collection and dynamic analysis.

[0003] With the development of medical technology, gait collection devices based on wearable devices are gradually used in the field of clinical gait assessment. Such devices can collect the patient's gait parameters in real time. However, the devices in the prior art may affect the patient's comfort when worn, causing gait abnormalities, so that the collected data cannot truly reflect the patient's natural walking state; secondly, the wearing position and fixing method of the device may limit the patient's joint range of motion and change their normal movement pattern, which is not conducive to improving the collection accuracy of the gait collection device. Summary of the invention

[0004] In view of this, the present invention aims to provide a gait collection device to improve the collection accuracy of the gait collection device.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] A gait collection device comprises a housing, a trigger module arranged in the housing, and a processing module electrically connected to the trigger module;

[0007] The trigger module includes an acquisition board and a plurality of trigger units arranged on the acquisition board, each of which can be triggered by an external force to send out a trigger signal;

[0008] The housing is provided with avoidance holes corresponding to each of the trigger units, so that the trigger units can be triggered by external forces;

[0009] The processing module is configured to convert the trigger signal into position information of the trigger unit after receiving the trigger signal.

[0010] Furthermore, the trigger units are arranged on the acquisition board at equal intervals.

[0011] Furthermore, the trigger unit includes a diode and a micro switch which are arranged in series, and the anode of the diode is connected to one side pin of the micro switch.

[0012] Furthermore, the distance between adjacent trigger units ranges from 1 cm to 1.5 cm.

[0013] Furthermore, a buffer layer is provided between the shell and the trigger module.

[0014] Furthermore, the buffer layer is a rubber pad.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] The gait acquisition device described in the present invention can send out a trigger signal when each trigger unit is triggered through the trigger unit arranged on the acquisition board when the patient applies external force to the gait acquisition device, and process the trigger signal into position information through the processing module, so as to obtain the gait information of the patient stepping on the gait acquisition device. In addition, through the setting of the shell, the protection effect of the trigger module can be improved, which is beneficial to ensuring the service life of the trigger module. The setting of the avoidance hole on the shell is beneficial to ensuring that the trigger unit can be triggered by external force, and at the same time, it can also prevent the acquisition board from being damaged by external force, which is beneficial to design implementation and improves the accuracy of gait acquisition.

[0017] In addition, the trigger units are arranged at equal intervals on the acquisition board, which is conducive to obtaining the position information of each trigger unit according to the trigger signal, and is convenient for calculating the relevant parameters of the gait, which is conducive to design implementation. The setting of the diode is conducive to avoiding the generation of false trigger signals, which helps to improve the accuracy of gait acquisition and is conducive to design implementation. The spacing between adjacent trigger units is 1cm-1.5cm, which is convenient for calculating the relevant data of gait acquisition and is conducive to design implementation. The setting of the buffer layer is conducive to improving the protection effect of the trigger module and helping to increase the service life of the gait acquisition device.

[0018] The present invention further proposes a gait collection method based on the above gait collection device, the method comprising:

[0019] Arranging a plurality of the gait collection devices in a test area;

[0020] Establishing a plane coordinate system for the test area, and sequentially numbering the gait collection devices along the positive direction of the X-axis;

[0021] Taking the row number and column number of each trigger unit in the test area as coordinate points, recording the coordinates of each trigger unit, and establishing a gait collection graph in a visual interface;

[0022] When the trigger unit is triggered by an external force, the coordinates of the triggered trigger unit are recorded as trigger coordinates, and the trigger time is recorded;

[0023] Marking the trigger coordinates on the gait collection graph to obtain a gait mark;

[0024] The time parameter and space parameter of gait are obtained according to the trigger coordinates and the trigger time of the key point in the gait mark.

[0025] Furthermore, when numbering the gait collection devices, the numbering starts from 0.

[0026] Furthermore, the temporal parameters of the gait include the gait cycle, the heel strike phase, the complete still phase, the heel leave phase and the swing phase; the spatial parameters of the gait include the step width and step length.

[0027] Furthermore, when the external force triggers the trigger unit, the coordinates of the triggered trigger unit are recorded as the trigger coordinates, and the trigger time is recorded, including: activating the trigger unit column by column according to the position of the trigger unit in the test area; when the activated trigger unit sends a trigger signal, the coordinates of the trigger unit are recorded as the trigger coordinates.

[0028] The gait collection method described in the present invention helps to improve the accuracy of gait collection by establishing a gait collection graph and establishing coordinates in rows and columns. By recording the coordinates of the trigger unit as trigger coordinates and recording the trigger time, gait information can be displayed in a visual interface, and the time parameters and spatial parameters of the gait can be obtained according to the key points of the gait, which helps to improve the use quality of the gait collection device and is conducive to improving the accuracy of gait collection.

[0029] In addition, by numbering the gait acquisition devices starting from 0, it is helpful to reduce the offset adjustment when calculating the code, which is helpful for design implementation. Activating the trigger unit column by column helps to improve the accuracy of acquisition, which is beneficial for design implementation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0031] Figure 1 It is a structural schematic diagram of a gait collection device according to an embodiment of the present invention;

[0032] Figure 2 for Figure 1 A magnified image of point A;

[0033] Figure 3 This is a flow chart of the gait collection method according to an embodiment of the present invention;

[0034] Description of reference numerals:

[0035] 1. Shell;

[0036] 2. Trigger module;

[0037] 201, acquisition board; 202, trigger unit. DETAILED DESCRIPTION

[0038] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0039] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0040] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0041] As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]", depending on the context.

[0042] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0043] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0044] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0045] Embodiment 1

[0046] This embodiment relates to a gait collection device, which aims to improve the accuracy of gait collection by optimizing the structure of the gait collection device.

[0047] In terms of overall structure, Figure 1 and Figure 2 As shown, the gait collection device in this embodiment includes a housing 1 , a trigger module 2 disposed in the housing 1 , and a processing module electrically connected to the trigger module 2 .

[0048] Among them, the trigger module 2 includes an acquisition board 201 and a plurality of trigger units 202 arranged on the acquisition board 201. Each trigger unit 202 can be triggered by an external force to send a trigger signal. An avoidance hole is provided on the shell 1 corresponding to each trigger unit 202 so that the trigger unit 202 can be triggered by an external force. The processing module is configured to convert the trigger signal into the position information of the trigger unit 202 after receiving the trigger signal.

[0049] As configured above, the gait acquisition device in this embodiment can send out a trigger signal when each trigger unit 202 is triggered through the trigger unit 202 arranged on the acquisition board 201 when the patient applies external force to the gait acquisition device, and process the trigger signal into position information through the processing module, so as to obtain the gait information of the patient stepping on the gait acquisition device, and through the setting of the shell 1, the protection effect of the trigger module 2 can be improved, which is beneficial to ensuring the service life of the trigger module 2, and the setting of the avoidance hole on the shell 1 is beneficial to ensuring that the trigger unit 202 can be triggered by external force, and at the same time, it can also prevent external force from damaging the acquisition board 201, which is beneficial to design implementation and improves the accuracy of gait acquisition.

[0050] Specifically, in this embodiment, as an exemplary structure, the shell 1 in this embodiment has a accommodating cavity for accommodating the trigger module 2, and an avoidance hole is provided on the surface of the shell 1 to expose the trigger unit 202 of the trigger module 2 to the outside world, so that external force can be applied to the trigger unit 202. The setting of the avoidance hole is helpful to ensure that the trigger unit 202 can be triggered by external force, and at the same time, it can also prevent external force from damaging the acquisition board 201.

[0051] In more detail, a buffer layer is provided between the housing 1 and the trigger module 2 in this embodiment. The provision of the buffer layer is conducive to improving the protection effect of the trigger module 2, and helps to improve the service life of the gait collection device. In this embodiment, the buffer layer can be, for example, a rubber pad, so that the buffer layer is a rubber pad, which helps to improve the protection effect of the housing 1 on the gait collection device, and through the provision of the rubber pad, the mechanical impact of the housing 1 on the trigger module 2 can be absorbed, which helps to improve the service life of the trigger module 2. The rubber pad is an insulating material, which can avoid affecting the normal use of the trigger module 2.

[0052] The trigger units 202 of the gait collection device in this embodiment are arranged on the collection board 201 in a determinant and at equal intervals. The trigger units 202 of each row are connected in series, and the trigger units 202 of each column are connected in series, and each is connected to the processing module, so that each trigger unit 202 is arranged at equal intervals on the collection board 201, which is conducive to obtaining the position information of each trigger unit 202 according to the trigger signal, and is convenient for calculating the relevant parameters of the gait, which is convenient for design implementation. The spacing range of each adjacent trigger unit 202 is 1cm-1.5cm, and in this embodiment, for example, it can be 1cm, 1.1cm, 1.2cm, 1.3cm, 1.4cm, 1.5cm, and it is only necessary to satisfy that each trigger unit 202 is arranged at equal intervals, so that the spacing between adjacent trigger units 202 is 1cm-1.5cm, which is convenient for calculating the relevant data of gait collection, which is convenient for design implementation.

[0053] In more detail, the trigger unit 202 in this embodiment includes a diode and a micro switch arranged in series, the positive pole of the diode is connected to one side pin of the micro switch, the negative pole of the diode is connected to the processing module, and the other side pin of the micro switch is also connected to the processing module. The setting of the diode is helpful to avoid the generation of false trigger signals, which helps to improve the accuracy of gait collection and facilitate design implementation.

[0054] The processing module in this embodiment is configured to convert the trigger signal into the position information of the trigger unit 202 after receiving the trigger signal. The processing module in this embodiment may be, for example, an STM32F103ZET6 processor, or of course other processors in the prior art. It only needs to be configured to convert the received trigger signal into the position information of the trigger unit 202.

[0055] The gait collection device of this embodiment can send out a trigger signal when each trigger unit 202 is triggered when the patient applies external force to the gait collection device, and process the trigger signal into position information to obtain the gait information of the patient stepping on the gait collection device. It can also protect the service life of the trigger module 2, facilitate design implementation, and improve the accuracy of gait collection.

[0056] Embodiment 2

[0057] This embodiment relates to a gait collection method. The gait collection method in this embodiment uses the gait collection device in the first embodiment. The method includes:

[0058] Step S1: Arrange multiple gait collection devices in a test area.

[0059] Among them, in this step S1, the gait collection device is the gait collection device in Example 1. When arranged, the trigger unit is arranged upward so that it can be stepped on by the patient to apply external force to the trigger unit. The edges of each gait collection device abut against each other to reduce the gap between the devices when arranged.

[0060] Step S2: establish a plane coordinate system for the test area, and number the gait collection devices in sequence along the positive direction of the X-axis.

[0061] Among them, in this step S2, when establishing a plane coordinate system for the test area, the plane coordinate system is established with the lower left corner of the gait collection device in the lower left corner as the origin, and each gait collection device is numbered, starting from 0 and numbering in sequence to the end of the first row, and then the second row is numbered in sequence from the second row continuing the number at the end of the first row until the numbering of the gait collection device in the upper right corner is completed.

[0062] Step S3: Taking the row number and column number of each trigger unit in the test area as coordinate points, record the coordinates of each trigger unit and establish a gait collection diagram in the visual interface.

[0063] Among them, in this step S3, the row position of each trigger unit is taken as the Y-axis coordinate, the column number is taken as the X-axis coordinate, the coordinates of each trigger unit are recorded, and the coordinates of each trigger unit are marked in the coordinate system in the visual interface to establish a gait collection diagram.

[0064] Step S4: When the external force triggers the trigger unit, the coordinates of the triggered trigger unit are recorded as the trigger coordinates, and the trigger time is recorded.

[0065] Wherein, in step S4, when the trigger unit is triggered by the patient stepping on the trigger unit and applying an external force, the coordinates of the triggered trigger unit are recorded, and the triggering time when the triggering coordinates are triggered is also recorded synchronously.

[0066] Step S5: Mark the trigger coordinates in the gait collection image to obtain a gait mark.

[0067] Among them, in step S5, after the trigger coordinates are collected, they are distinguished and marked in the gait collection map to intuitively display the gait marks of the patient's stepping.

[0068] Step S6: Obtain the time parameters and space parameters of the gait according to the trigger coordinates and trigger time of the key points in the gait mark.

[0069] Among them, in this step S6, according to the time parameters and spatial parameters of the gait that need to be obtained, the corresponding key points are selected in the gait mark to extract the gait features, and the time parameters and spatial parameters of the gait are calculated, wherein the time parameters of the gait may include, for example, the gait cycle, the heel strike phase, the completely still phase, the heel leave phase and the swing phase, and the spatial parameters of the gait may include, for example, the step width and step length.

[0070] In more detail, when calculating the gait cycle T, the time point at which the heel of the gait marker touches the ground can be set as t1, and the time point at which the next gait marker heel touches the opposite side can be set as t2. The gait cycle can be calculated using the relationship T=t2-t1. HS , completely stationary phase T FF , heel off the ground phase T HO and swing phase T SW When calculating the key point time HS of the heel hitting the ground, the key point time FF of the whole foot flattening, the key point time HO of the heel leaving the ground, and the key point time TO of the toe leaving the ground can be obtained, and according to the relationship T HS =FF-HS, T FF =HO-FF, T HO =TO-HO, T SW =HS'-TO, where HS' is the trigger time of the key point of the next heel touchdown.

[0071] When calculating the step length L and step width W, they are calculated according to the relationship L=b*(Y2-Y1) and W=b*(X2-X1), respectively, where Y1 is the vertical coordinate of the heel touchdown point on the current side, and Y2 is the vertical coordinate of the heel touchdown point on the opposite side. X1 is the horizontal coordinate of the heel touchdown point on the current side, and X2 is the horizontal coordinate of the heel touchdown point on the opposite side, and b is the sum of the side lengths and spacings of two adjacent trigger units.

[0072] The test area of ​​this embodiment may include, for example, 16 gait collection devices, each of which is numbered from 0 to 15. The gait collection device at the lower left corner is numbered 0, the gait collection device at the rightmost side of the first row is numbered 3, the gait collection device at the first column of the second row is numbered 4, and so on. The gait collection device at the upper right corner is numbered 15, that is, the gait collection devices numbered 0-3 are in the first row, the gait collection devices numbered 4-7 are in the second row, the gait collection devices numbered 8-11 are in the third row, and the gait collection devices numbered 12-15 are in the fourth row. The trigger units of each gait collection device are arranged in 10 rows and 30 columns. When calculating the coordinates of the trigger units, the coordinates of the trigger unit at the lower left corner of the gait collection device numbered 0 are set to (0, 0), and so on. The coordinates of each trigger unit are recorded according to the row number and column number of the trigger unit.

[0073] The gait collection method in this embodiment, by applying the gait collection device in Example 1, can obtain the trigger coordinates and trigger time when each trigger unit is triggered when the patient applies external force to the gait collection device, thereby obtaining the gait information of the patient stepping on the gait collection device, and can protect the service life of the trigger module, which is beneficial to design implementation and improves the accuracy of gait collection.

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A gait collection device, characterized in that: It comprises a housing (1), a trigger module (2) arranged in the housing (1), and a processing module electrically connected to the trigger module (2); The trigger module (2) comprises a collection board (201) and a plurality of trigger units (202) arranged on the collection board (201), and each of the trigger units (202) can be triggered by an external force to send out a trigger signal; The housing (1) is provided with avoidance holes corresponding to each of the trigger units (202), so that the trigger units (202) can be triggered by external forces; The processing module is configured to convert the trigger signal into position information of the trigger unit (202) after receiving the trigger signal.

2. The gait acquisition device according to claim 1, characterized in that: The trigger units (202) are arranged on the acquisition board (201) at equal intervals.

3. The gait acquisition device according to claim 2, characterized in that: The trigger unit (202) comprises a diode and a micro switch which are arranged in series, and the positive electrode of the diode is connected to a pin on one side of the micro switch.

4. The gait acquisition device according to claim 2, characterized in that: The distance between adjacent trigger units (202) ranges from 1 cm to 1.5 cm.

5. The gait acquisition device according to claims 1-4, characterized in that: A buffer layer is provided between the housing (1) and the trigger module (2).

6. The gait acquisition device according to claim 5, characterized in that: The buffer layer is a rubber pad.

7. The gait collection method according to any one of claims 1 to 6, characterized in that: The method includes: Arranging a plurality of the gait collection devices in a test area; Establishing a plane coordinate system for the test area, and sequentially numbering the gait collection devices along the positive direction of the X-axis; Taking the row number and column number of each trigger unit (202) in the test area as coordinate points, recording the coordinates of each trigger unit (202), and establishing a gait collection diagram in a visual interface; When the trigger unit (202) is triggered by an external force, the coordinates of the triggered trigger unit (202) are recorded as trigger coordinates, and the trigger time is recorded; Marking the trigger coordinates on the gait collection graph to obtain a gait mark; The time parameter and the space parameter of the gait are obtained according to the trigger coordinates and the trigger time of the key point in the gait mark.

8. The gait collection method according to claim 7, characterized in that: When numbering the gait collection devices, the numbering starts from 0.

9. The gait collection method according to claim 7, characterized in that: The time parameters of the gait include the gait cycle, the heel strike phase, the complete static phase, the heel off phase and the swing phase; The spatial parameters of the gait include step width and step length.

10. The gait collection method according to any one of claims 7 to 9, characterized in that: When the external force triggers the trigger unit (202), the coordinates of the triggered trigger unit (202) are recorded as trigger coordinates, and the trigger time is recorded, including: activating the trigger units (202) column by column according to the positions of the trigger units (202) in the test area; When the activated trigger unit (202) sends a trigger signal, the coordinates of the trigger unit (202) are recorded as trigger coordinates.

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