Foot gait motion FSR measuring unit

Abstract

The utility model relates to a foot gait motion FSR measuring unit which comprises an ARM controller, a power supply module, a WIFI wireless communication module, a storage module, an interface module, an FSR sensor, an SD memory card and a lithium battery. The ARM controller is connected with a foot three-dimensional motion analysis system through the WIFI wireless communication module, stores received data to the SD memory card through the storage module, is connected with the lithium battery through the power supply module, and is connected with the two FSR sensors through the interface module; the two FSR sensors are used for collecting foot pressure information of a subject and uploading the foot pressure information to the ARM controller. The device can be widely applied to the field of biomechanics.

Description

Technical Field

[0001] The utility model relates to a foot gait motion FSR measurement unit, belonging to the field of biomechanics. Background Art

[0002] In human biomechanics research, it's often necessary to analyze various myoelectrical information, joint range of motion, and ground reaction forces within a gait cycle. Common gait cycle recognition methods utilize three-dimensional force platforms, optical motion capture, and plantar pressure devices to capture information such as ground reaction forces, joint motion angles, velocity, and plantar pressure during foot-to-ground contact, thereby identifying the moments of each gait cycle event. However, these methods are generally expensive and can only be performed in specialized biomechanics laboratories. Summary of the Invention

[0003] In view of the above problems, the purpose of the present invention is to provide a foot gait motion FSR measurement unit that can measure the occurrence time of each event in the gait cycle under real walking conditions in daily life environments.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A foot gait motion FSR measurement unit, comprising: an ARM controller, a power supply module, a WIFI wireless communication module, a storage module, an interface module, an FSR sensor, an SD memory card, and a lithium battery;

[0006] The ARM controller is connected to the foot three-dimensional motion analysis system through the WIFI wireless communication module, stores the received data to the SD memory card through the storage module, is connected to the lithium battery through the power supply module, and is connected to the two FSR sensors through the interface module;

[0007] The two FSR sensors are used to collect foot pressure information of the subject and upload it to the ARM controller.

[0008] Furthermore, the FSR measurement unit includes an ARM controller, a power supply module, a WIFI wireless communication module, a storage module, an interface module, an FSR sensor, an SD memory card and a lithium battery;

[0009] The ARM controller is connected to the foot three-dimensional motion analysis system via the WIFI wireless communication module, stores the received data into the SD memory card via the storage module, is connected to the lithium battery via the power supply module, and is connected to the two FSR sensors via the interface module;

[0010] The two FSR sensors are used to collect foot pressure information of the subject and upload it to the ARM controller.

[0011] Furthermore, two FSR sensors are placed at the heel and first metatarsophalangeal joint of the subject, respectively.

[0012] Furthermore, the ARM controller, power supply module, interface module, WIFI wireless communication module and storage module are all centrally packaged in a plastic control box.

[0013] Furthermore, the plastic control box is fixed to the subject's thigh via an elastic band.

[0014] Furthermore, a toggle switch is provided between the power supply module and the lithium battery for controlling the lithium battery to be in a power supply or charging state; the lithium battery is also connected to a USB interface provided on the control box for charging.

[0015] By adopting the above technical solution, the present invention has the following advantages: The 3D foot motion analysis system is connected to the FSR measurement unit via a wireless switch, and the 3D foot motion analysis system sends instructions to collect pressure information from the subject's foot. This allows for measuring the timing of various events in the gait cycle during actual walking in everyday life.

[0016] Therefore, the utility model can be widely applied in the field of biomechanics. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. Throughout the accompanying drawings, the same reference numerals are used to denote the same components. In the accompanying drawings:

[0018] Figure 1 Schematic diagram of the structure of the foot gait motion FSR measurement unit provided by an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the composition of the foot gait motion FSR measurement unit provided by an embodiment of the present utility model;

[0020] Figure 3 This is a physical diagram of the foot gait motion FSR measurement unit provided by an embodiment of the present utility model;

[0021] Figure 4 This is a circuit schematic diagram of a foot gait motion FSR measurement unit provided by an embodiment of the present utility model;

[0022] Figure 5This is a schematic diagram of the measurement results of the foot gait motion FSR measurement unit provided by an embodiment of the present utility model. DETAILED DESCRIPTION

[0023] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0024] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0025] FSR, or force-sensitive resistor, is a flexible thin-film pressure sensor that can be used to measure pressure on various irregular surfaces. It can be used in the design of foot switches. By detecting the pressure of heel strike and toe leave, it can calculate the time of heel strike and toe leave in the gait cycle based on a specific calculation method.

[0026] Based on this, the present invention provides a foot gait motion FSR measurement unit, comprising a three-dimensional foot motion analysis system and an FSR measurement unit. The three-dimensional foot motion analysis system is connected to the FSR measurement unit via a wireless switch, and the three-dimensional foot motion analysis system sends commands to collect pressure information from the subject's foot. This device can measure the timing of various events in the gait cycle during real-life walking in everyday environments.

[0027] Example 1

[0028] like Figures 1 to 4 As shown, this practical information provides a foot gait motion FSR measurement unit, which includes: a three-dimensional foot motion analysis system and an FSR measurement unit. The three-dimensional foot motion analysis system is connected to the FSR measurement unit via a wireless switch, and the three-dimensional foot motion analysis system sends instructions to collect pressure information from the subject's foot.

[0029] Furthermore, the FSR measurement unit includes an ARM controller, a power supply module, a Wi-Fi wireless communication module, a storage module, an interface module, an FSR sensor, an SD memory card, and a 3.7V lithium battery. The ARM controller connects to the 3D foot motion analysis system via the Wi-Fi wireless communication module, stores received data on the SD memory card via the storage module, connects to the lithium battery via the power supply module, and connects to the two FSR sensors via the interface module. The FSR sensors are used to collect pressure information from the subject's foot and upload it to the ARM controller.

[0030] Furthermore, two FSR sensors are placed at the heel and the first metatarsophalangeal joint, respectively, and can be directly fixed to the subject's foot or shoe sole. The positions of FSR sensor 1 placed at the heel and FSR sensor 2 placed at the first metatarsophalangeal joint cannot be reversed.

[0031] Furthermore, the ARM controller, power supply module, interface module, WIFI wireless communication module and storage module are all centrally packaged in a plastic control box.

[0032] Furthermore, the plastic control box that centrally encapsulates all modules can be fixed to the subject's thigh via an elastic band.

[0033] Furthermore, a toggle switch is provided between the power supply module and the lithium battery for controlling the lithium battery to be in a power supply or charging state; the lithium battery is also connected to a USB interface provided on the control box for charging.

[0034] Furthermore, the lithium battery uses a 3.7V lithium battery.

[0035] The working principle of this utility model is:

[0036] After the FSR measurement unit is powered, it establishes a link with the foot motion capture system through a wireless network. After the link is established, the foot motion analysis system can display the link status in real time;

[0037] The handheld controller of the foot motion capture system or the foot motion acquisition and analysis controller can send "start acquisition", "stop acquisition" or "data transmission" commands to the FSR measurement unit;

[0038] After receiving the "start acquisition" command, the FSR measurement unit begins to periodically collect pressure data from the two FSR sensors and writes it to the data file on the SD memory card;

[0039] After receiving the "stop acquisition" command, the FSR measurement unit stops collecting pressure data from the two FSR sensors and closes the data file read and write operations on the SD memory card;

[0040] After receiving the "data transmission" command, the FSR measurement unit cyclically sends the data file data of the SD memory card to the foot motion acquisition and analysis controller via TCP.

[0041] like Figure 5 , which is a diagram of foot pressure measurement results collected using the present invention.

[0042] 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 the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A foot gait motion FSR measurement unit, characterized in that: include: ARM controller, power supply module, WIFI wireless communication module, storage module, interface module, FSR sensor, SD memory card and lithium battery; The ARM controller is connected to the foot three-dimensional motion analysis system through the WIFI wireless communication module, stores the received data to the SD memory card through the storage module, is connected to the lithium battery through the power supply module, and is connected to the two FSR sensors through the interface module; The two FSR sensors are used to collect foot pressure information of the subject and upload it to the ARM controller.

2. A foot gait motion FSR measurement unit according to claim 1, characterized in that: Two FSR sensors were placed on the heel and first metatarsophalangeal joint of the subject, respectively.

3. The foot gait motion FSR measurement unit according to claim 1, characterized in that: The ARM controller, power supply module, interface module, WIFI wireless communication module and storage module are all centrally packaged in a plastic control box.

4. The foot gait motion FSR measurement unit according to claim 3, characterized in that: The plastic control box was fixed to the subject's thigh by an elastic band.

5. The foot gait motion FSR measurement unit according to claim 1, characterized in that: A toggle switch is also provided between the power supply module and the lithium battery for controlling the power supply or charging state of the lithium battery; the lithium battery is also connected to a USB interface provided on the control box for charging.

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