Plantar pressure detector for diabetic patient

Abstract

The invention relates to the technical field of medical auxiliary equipment, and discloses a plantar pressure detector for diabetic patients, which comprises a multi-layer composite insole integrated with a plurality of functional modules and a cloud data analysis platform, and is characterized in that a flexible pressure sensor array is embedded in the multi-layer composite insole; the microprocessor control module is responsible for collecting and processing data from the sensor array; a wireless communication module; the alarm module is used for reminding a user through vibration, sound or visual signals when abnormal pressure is detected; and the cloud data analysis platform is used for receiving the data uploaded by the wireless communication module, further analyzing the foot health condition of the user and providing personalized health management suggestions. The system has the advantages of real-time monitoring, intelligent early warning, personalized health management, good wearing comfort and the like, through combination of the flexible sensor and the cloud platform, accurate detection and remote data analysis of foot pressure are achieved, foot complications are effectively prevented, and the life quality of a patient is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical auxiliary equipment, and in particular to a plantar pressure detector for diabetic patients. Background Art

[0002] Diabetes is a chronic metabolic disease. Long-term high blood sugar levels can lead to peripheral neuropathy and blood circulation disorders, causing patients to lose sensation in their feet and easily develop plantar ulcers, infections, and even amputations due to local high pressure. Currently, clinical assessment of foot health mainly relies on doctors' subjective judgment or regular examinations, and there is a lack of objective and continuous pressure monitoring methods. Although some plantar pressure detection devices have been used in clinical research, they generally have problems such as high price, large size, poor portability, and inability to continuously monitor, making it difficult to meet the actual needs of diabetic patients for daily home use. Therefore, the development of a low-cost, comfortable, wearable plantar pressure detection device with a data feedback mechanism is of great significance for the early detection and prevention of diabetic foot. Therefore, we propose a plantar pressure detector for diabetic patients. Summary of the Invention

[0003] The main purpose of the present invention is to provide a plantar pressure detector for diabetic patients, which can effectively solve the problems in the background technology.

[0004] To achieve the above object, the technical solution adopted by the present invention is:

[0005] A plantar pressure detector for diabetic patients, comprising a multi-layer composite insole integrating multiple functional modules and a cloud data analysis platform, wherein the multi-layer composite insole is embedded with:

[0006] Flexible pressure sensor array for real-time monitoring of pressure distribution in various areas of the sole of the foot;

[0007] a microprocessor control module that collects and processes data from the sensor array;

[0008] Wireless communication module, which uses Bluetooth to send processed data to external devices;

[0009] An alarm module that alerts the user through vibration, sound, or visual signals when abnormal pressure is detected;

[0010] The cloud data analysis platform is used to receive data uploaded by the wireless communication module, further analyze the user's foot health status, and provide personalized health management suggestions.

[0011] As a further improvement of the above-mentioned scheme, the multi-layer composite insole includes, from top to bottom, a contact layer, a pressure sensing layer, a control circuit layer, a support buffer layer, and an anti-slip and wear-resistant layer. The flexible pressure sensor array is arranged on the pressure sensing layer, and the microprocessor control module, alarm module, and wireless communication module are arranged on a flexible circuit board within the control circuit layer, wherein the flexible pressure sensor array is electrically connected to the microprocessor control module through a flexible cable.

[0012] Through this technical solution, the structural design achieves functional zoning of the insole, ensuring that each component is rationally arranged and non-interfering with each other. The contact layer directly contacts the skin, providing a comfortable experience. The pressure sensing layer carries the core monitoring function. The control circuit layer integrates key electronic components and uses a flexible circuit board to adapt to bending deformation. The support buffer layer and anti-slip and wear-resistant layer ensure wearer stability and safety. The flexible cable design ensures a good electrical connection and mechanical flexibility between the sensor and the main control module, improving the stability and durability of the entire system.

[0013] As a further improvement of the above solution, a power module is provided on the flexible circuit board, and a USB interface electrically connected to the power module is provided on the front of the multi-layer composite insole.

[0014] Through the above technical solution: the power module provides continuous and stable power support for the entire system. It is integrated on the flexible circuit board, which helps to simplify internal wiring and save space. The USB interface located on the front of the insole facilitates users to charge the device, avoiding the inconvenience caused by battery replacement. It also improves the maintainability and user experience of the device, which is in line with the modern design concept of smart wearable devices.

[0015] As a further improvement of the above solution, the contact layer is made of antibacterial and breathable fabric, the supporting buffer layer is made of EVA foam or silicone material, the anti-slip and wear-resistant layer is made of anti-slip rubber material, and the bottom of the anti-slip and wear-resistant layer is integrally formed with several evenly distributed protrusions.

[0016] Through the above technical solution: the contact layer uses antibacterial and breathable fabric to effectively prevent bacterial growth, reduce odor, and improve wearing comfort, which is especially suitable for the foot environment of diabetic patients that is prone to infection; the support and buffer layer uses EVA foam or silicone material, which has good shock absorption performance and resilience, and can reduce the pressure impact on the soles of the feet when walking; the anti-slip and wear-resistant layer uses rubber material and is designed with an evenly distributed convex dot structure to enhance ground grip, improve walking stability, and reduce the risk of falls, which is especially suitable for the elderly and people with mobility difficulties.

[0017] As a further improvement of the above solution, the flexible pressure sensor array is composed of a plurality of flexible pressure sensor units, and the plurality of flexible pressure sensor units are inlaid and installed in the pressure sensing layer in a grid shape.

[0018] The above technical solution, which arranges multiple flexible pressure sensor units in a grid pattern, enables refined pressure acquisition across different areas of the sole of the foot. This structure not only improves measurement accuracy but also more accurately identifies areas of abnormal pressure concentration, enabling timely detection of potential foot health issues. Furthermore, the grid layout enhances the overall flexibility and conformability of the sensor array, making it more adaptable to the complex curved surface structure of the sole of the foot.

[0019] As a further improvement of the above solution, the flexible pressure sensor unit is made of a conductive polymer film, carbon nanotubes or graphene-based materials, and has a flexibility with a bending radius of less than 5 mm.

[0020] Through the above technical solution: the flexible pressure sensor unit uses advanced conductive polymers, carbon nanotubes or graphene and other new materials, giving it excellent flexibility and sensitivity, and can maintain stable electrical properties under extremely small bending radius. This enables the sensor to fit closely to the surface of the sole of the foot and accurately capture pressure changes even during dynamic walking, meeting the monitoring needs of long-term wear and complex motion states, greatly improving the practicality and reliability of the equipment.

[0021] As a further improvement of the above solution, the microprocessor control module adopts an ARM Cortex-M series or ESP32 main control chip with a built-in real-time operating system, supporting data filtering, normalization processing, pressure threshold judgment and low power management functions.

[0022] Through the above technical solution: the microprocessor control module is the "brain" of the entire system, using the high-performance ARMCortex-M series or ESP32 chip, which not only has powerful data processing capabilities, but also supports real-time operating systems to ensure the efficient and orderly execution of various tasks. Through data filtering and normalization processing, it can eliminate noise interference and improve data accuracy; the pressure threshold judgment mechanism is used to identify high-risk areas and trigger early warnings; the low-power management function extends the battery life of the equipment, enabling it to achieve all-weather continuous monitoring.

[0023] As a further improvement of the above solution, the wireless communication module is a Bluetooth BLE module, which supports data interaction with a smartphone APP and communicates with a cloud data analysis platform through the MQTT or HTTP protocol.

[0024] Through the above technical solution: The Bluetooth BLE module, with its low power consumption, high speed, and short-distance transmission characteristics, is very suitable for the data communication needs of wearable devices. It can transmit processed pressure data to the user's smartphone APP in real time for users to view and analyze. At the same time, it establishes a connection with the cloud platform through the MQTT or HTTP protocol to realize data upload and remote access, facilitating doctors or professionals to conduct remote diagnosis and health management, and build a complete personal-device-cloud closed-loop system.

[0025] As a further improvement of the above solution, the alarm module includes at least one of a micro vibration motor, an LED indicator light and a buzzer, which is triggered by a microprocessor control module according to a preset pressure threshold to achieve multi-level early warning prompts.

[0026] Through the above technical solution: the alarm module is an important means for users to perceive abnormalities. It adopts a combination of design methods, such as vibration, light, and sound, and can adapt to different usage scenarios and personal preferences. When the microprocessor detects that the pressure on a certain part exceeds the set threshold, it will immediately activate the corresponding alarm device and issue a multi-level early warning signal to remind the user to adjust the gait or rest in time to prevent further deterioration of foot injuries, thereby playing a role of active protection.

[0027] As a further improvement of the above solution, the cloud data analysis platform is deployed on a cloud server and includes a database, AI analysis model and user / doctor interface for storing historical data, analyzing gait trends and generating personalized care recommendations.

[0028] Through the above technical solution: the cloud platform serves as the brain of the system, responsible for receiving large amounts of data from the insoles, and performing long-term storage and in-depth analysis. With the help of artificial intelligence algorithms, the platform can identify the user's gait characteristics and plantar pressure change trends, and predict potential health risks; at the same time, the platform provides dual interfaces for users and doctors. Users can view their own health reports, and doctors can obtain diagnosis and treatment data through professional interfaces to develop personalized rehabilitation or intervention plans, realizing a complete chain from data collection to medical decision-making.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. The greatest advantages of this invention lie in its real-time nature and portability. Through the flexible pressure sensor array embedded in the multi-layer composite insole, it can obtain real-time pressure data from various areas of the sole of the foot, allowing users to monitor their foot health at any time whether at home or away. This instant feedback mechanism helps to promptly detect the risk of complications such as plantar ulcers, allowing effective preventive measures to avoid worsening of the condition.

[0031] 2. The present invention utilizes the design of a cloud-based data analysis platform, which can not only store a large amount of historical data, but also use AI analysis models to analyze the user's gait trends, and then generate personalized care recommendations. This approach greatly improves the pertinence and effectiveness of health management, helping users to develop reasonable exercise plans and lifestyle habits based on their own circumstances, which is of great significance for improving overall health.

[0032] 3. The present invention also has a low-power management function and adopts an efficient power management strategy to ensure long-term use without frequent charging. The built-in Bluetooth BLE module supports seamless connection with the smartphone APP, making it convenient for users to view their personal health reports at any time. At the same time, it can also ensure data security and privacy protection, enhancing the user experience.

[0033] 4. The present invention takes into account the comfort and safety in practical applications. The contact layer uses antibacterial and breathable fabric, the support and buffer layer uses EVA foam or silicone material, and the anti-slip and wear-resistant layer uses anti-slip rubber material. The bottom is provided with raised points to further enhance friction. These design details not only improve the comfort of wearing, but also increase the safety of walking. It is especially suitable for the elderly and people with mobility difficulties. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 This is a schematic diagram of the overall structure of a plantar pressure detector for diabetic patients according to the present invention;

[0036] Figure 2 A partial schematic diagram of a multi-layer composite insole for a diabetic patient's plantar pressure detector according to the present invention;

[0037] Figure 3 This is a schematic diagram of the composition structure of a multi-layer composite insole of a plantar pressure detector for diabetic patients according to the present invention;

[0038] Figure 4 This is a schematic structural diagram of a pressure sensing layer of a plantar pressure detector for diabetic patients according to the present invention;

[0039] Figure 5 This is a structural diagram of a control circuit layer of a plantar pressure detector for diabetic patients according to the present invention;

[0040] Figure 6This is a schematic diagram of the bottom structure of the anti-slip and wear-resistant layer of a plantar pressure detector for diabetic patients according to the present invention;

[0041] Figure 7 This is a schematic diagram of the connection of the functional modules of a plantar pressure detector for diabetic patients according to the present invention.

[0042] In the figure: 1. Multi-layer composite insole; 11. USB interface; 2. Cloud data analysis platform; 3. Contact layer; 4. Pressure sensing layer; 41. Flexible pressure sensor array; 411. Flexible pressure sensor unit; 5. Control circuit layer; 51. Flexible circuit board; 52. Microprocessor control module; 53. Alarm module; 54. Wireless communication module; 55. Power module; 6. Support and buffer layer; 7. Anti-slip and wear-resistant layer; 71. Bump. DETAILED DESCRIPTION

[0043] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0044] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0046] The technical solution of the present invention is further described below with reference to the accompanying drawings.

[0047] like Figure 1-7 As shown, a plantar pressure detector for diabetic patients includes a multi-layer composite insole 1 integrating multiple functional modules and a cloud data analysis platform 2, wherein the multi-layer composite insole 1 is embedded with:

[0048] A flexible pressure sensor array 41 is used to monitor the pressure distribution in various areas of the sole of the foot in real time;

[0049] a microprocessor control module 52 , which is responsible for collecting and processing data from the sensor array;

[0050] Wireless communication module 54, which uses Bluetooth to send the processed data to an external device;

[0051] an alarm module 53 that alerts the user through vibration, sound, or visual signals when abnormal pressure is detected;

[0052] The cloud data analysis platform 2 is used to receive the data uploaded by the wireless communication module 54, further analyze the user's foot health status, and provide personalized health management suggestions.

[0053] In this embodiment, the multi-layer composite insole 1 includes, from top to bottom, a contact layer 3, a pressure sensing layer 4, a control circuit layer 5, a support buffer layer 6 and an anti-slip and wear-resistant layer 7. The flexible pressure sensor array 41 is arranged on the pressure sensing layer 4, and the microprocessor control module 52, the alarm module 53 and the wireless communication module 54 are arranged on the flexible circuit board 51 in the control circuit layer 5, wherein the flexible pressure sensor array 41 is electrically connected to the microprocessor control module 52 through a flexible cable; a power module 55 is provided on the flexible circuit board 51, and a USB interface 11 electrically connected to the power module 55 is provided on the front of the multi-layer composite insole 1; the flexible pressure sensor array 41 is composed of a plurality of flexible pressure sensor units 411, and the plurality of flexible pressure sensor units 411 are inlaid in the pressure sensing layer 4 in a grid shape; the flexible pressure sensor unit 411 is made of conductive polymer film, carbon nanotube or graphene-based material, and has a flexibility with a bending radius of less than 5 mm.

[0054] Through the above scheme: when the user puts on the multi-layer composite insole 1 integrated with multiple functional modules, the first thing to come into play is the flexible pressure sensor array 41. These flexible pressure sensor units 411 are carefully arranged in the pressure sensing layer 4 of the multi-layer composite insole 1, which can accurately capture the pressure exerted on various areas of the sole of the foot. With each step the user takes, the flexible pressure sensor unit 411 converts the real-time changes sensed into electrical signals, and transmits these signals to the microprocessor control module 52 located in the control circuit layer 5; in addition, the contact layer 3 uses antibacterial and breathable fabric, the support and buffer layer 6 uses EVA foam or silicone material, and the anti-slip and wear-resistant layer 7 uses anti-slip rubber material, and has bumps 71 on the bottom to further enhance friction. These design details not only improve the comfort of wearing, but also increase the safety of walking, and are particularly suitable for use by the elderly and people with mobility difficulties.

[0055] In this embodiment, the contact layer 3 is made of antibacterial breathable fabric, the supporting buffer layer 6 is made of EVA foam or silicone material, the anti-slip and wear-resistant layer 7 is made of anti-slip rubber material, and the bottom of the anti-slip and wear-resistant layer 7 is integrally formed with several evenly distributed protrusions 71.

[0056] Through the above scheme:.

[0057] In this embodiment, the microprocessor control module 52 adopts an ARM Cortex-M series or ESP32 main control chip, has a built-in real-time operating system, supports data filtering, normalization processing, pressure threshold judgment and low power management functions; the wireless communication module 54 is a Bluetooth BLE module, supports data interaction with smartphone APP, and communicates with the cloud data analysis platform 2 through the MQTT or HTTP protocol; the alarm module 53 includes at least one of a micro vibration motor, an LED indicator light and a buzzer, and is triggered by the microprocessor control module 52 according to a preset pressure threshold to achieve multi-level early warning prompts.

[0058] Through the above solution: the microprocessor control module 52 usually adopts the ARM Cortex-M series or ESP32 main control chip, which has powerful data processing capabilities. It performs a series of complex operations on the received data, including data filtering, normalization processing, etc. to ensure the accuracy and reliability of the information. At the same time, the module will also judge whether the current pressure situation is within a safe range based on the preset pressure threshold. If an abnormally high pressure point is detected, indicating that there may be a foot ulcer or other health risks, the microprocessor control module 52 will trigger the alarm module 53; the alarm module 53 is composed of one or more of a micro vibration motor, an LED indicator light and a buzzer. Once a command is received, it will immediately remind the user to take a rest or adjust the walking method by vibration, flashing or making a sound, thereby effectively preventing damage to the feet caused by long-term high pressure.

[0059] In this embodiment, the cloud data analysis platform 2 is deployed on a cloud server and includes a database, an AI analysis model, and a user-side / doctor-side interface for storing historical data, analyzing gait trends, and generating personalized care recommendations.

[0060] Through the above solution: the wireless communication module 54 uses Bluetooth BLE technology to send data to the user's smartphone APP or directly upload it to the cloud data analysis platform 2. On this platform, with the help of advanced AI analysis models, the user's gait trends and foot health status are further analyzed in depth, and personalized health management suggestions are generated based on these analysis results. These suggestions may involve daily activity adjustments, dietary guidance or medical intervention, etc., aiming to help users better manage their own health status.

[0061] This embodiment mainly consists of two parts: a multi-layer composite insole 1 and a cloud data analysis platform 2. When a user puts on the multi-layer composite insole 1 integrated with multiple functional modules, the first thing to play a role is the flexible pressure sensor array 41. These flexible pressure sensor units 411 are carefully arranged in the pressure sensing layer 4 of the multi-layer composite insole 1, which can accurately capture the pressure on various areas of the sole of the foot. With each step of the user, the flexible pressure sensor units 411 convert the real-time changes they feel into electrical signals and transmit these signals to the microprocessor control module 52 located in the control circuit layer 5; the microprocessor control module 52 usually adopts ARM The Cortex-M series or ESP32 main control chip has powerful data processing capabilities. It performs a series of complex operations on the received data, including data filtering and normalization, to ensure the accuracy and reliability of the information. At the same time, the module also determines whether the current pressure is within a safe range based on preset pressure thresholds. If an abnormally high pressure point is detected, indicating the possibility of foot ulcers or other health risks, the microprocessor control module 52 will trigger the alarm module 53. The alarm module 53 is composed of one or more of a micro vibration motor, an LED indicator light, and a buzzer. Upon receiving the instruction, it immediately reminds the user to take a break or adjust their walking style through vibration, flashing, or sound, thereby effectively preventing damage to the feet caused by prolonged high pressure. At the same time, the processed data is not only analyzed locally. The wireless communication module 54 uses Bluetooth BLE technology to send the data to the user's smartphone app or directly upload it to the cloud data analysis platform 2. On this platform, advanced AI analysis models are used to further analyze the user's gait trends and foot health status. Based on these analysis results, personalized health management recommendations are generated. These recommendations may involve adjusting daily activities, dietary guidance, or medical intervention, aiming to help users better manage their health status. The entire plantar pressure detector not only provides instant health monitoring and early warning functions, but also provides users with a comprehensive way to understand changes in their own health through continuous data accumulation and analysis, achieving a seamless connection from personal use to professional medical advice.

[0062] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A plantar pressure detector for diabetic patients, characterized by: The invention comprises a multi-layer composite insole (1) integrating multiple functional modules and a cloud data analysis platform (2), wherein the multi-layer composite insole (1) is embedded with: A flexible pressure sensor array (41) for real-time monitoring of pressure distribution in various areas of the sole of the foot; a microprocessor control module (52) responsible for collecting and processing data from the sensor array; a wireless communication module (54) for transmitting the processed data to an external device using Bluetooth; an alarm module (53) that alerts the user through vibration, sound, or visual signals when abnormal pressure is detected; The cloud data analysis platform (2) is used to receive data uploaded by the wireless communication module (54), further analyze the user's foot health status, and provide personalized health management suggestions.

2. The plantar pressure detector for diabetic patients according to claim 1, characterized in that: The multi-layer composite insole (1) comprises, from top to bottom, a contact layer (3), a pressure sensing layer (4), a control circuit layer (5), a support and buffer layer (6), and an anti-slip and wear-resistant layer (7); the flexible pressure sensor array (41) is arranged on the pressure sensing layer (4); the microprocessor control module (52), the alarm module (53), and the wireless communication module (54) are arranged on a flexible circuit board (51) within the control circuit layer (5); wherein the flexible pressure sensor array (41) is electrically connected to the microprocessor control module (52) via a flexible cable.

3. The plantar pressure detector for diabetic patients according to claim 2, characterized in that: A power module (55) is provided on the flexible circuit board (51), and a USB interface (11) electrically connected to the power module (55) is provided on the front of the multi-layer composite insole (1).

4. The plantar pressure detector for diabetic patients according to claim 2, characterized in that: The contact layer (3) is made of antibacterial breathable fabric, the supporting buffer layer (6) is made of EVA foam or silicone material, the anti-skid and wear-resistant layer (7) is made of anti-skid rubber material, and the bottom of the anti-skid and wear-resistant layer (7) is integrally formed with a plurality of evenly distributed protrusions (71).

5. The plantar pressure detector for diabetic patients according to claim 2, characterized in that: The flexible pressure sensor array (41) is composed of a plurality of flexible pressure sensor units (411), and the plurality of flexible pressure sensor units (411) are inlaid and installed in a grid-like manner on the pressure sensing layer (4).

6. The plantar pressure detector for diabetic patients according to claim 5, characterized in that: The flexible pressure sensor unit (411) is made of a conductive polymer film, carbon nanotubes or graphene-based materials and has flexibility with a bending radius of less than 5 mm.

7. The plantar pressure detector for diabetic patients according to claim 1, characterized in that: The microprocessor control module (52) adopts an ARM Cortex-M series or ESP32 main control chip, has a built-in real-time operating system, and supports data filtering, normalization processing, pressure threshold judgment and low power consumption management functions.

8. The plantar pressure detector for diabetic patients according to claim 1, characterized in that: The wireless communication module (54) is a Bluetooth BLE module, which supports data interaction with a smartphone APP and communicates with a cloud data analysis platform (2) via the MQTT or HTTP protocol.

9. The plantar pressure detector for diabetic patients according to claim 1, characterized in that: The alarm module (53) includes at least one of a micro vibration motor, an LED indicator light, and a buzzer, and is triggered by the microprocessor control module (52) according to a preset pressure threshold to achieve multi-level early warning prompts.

10. The plantar pressure detector for diabetic patients according to claim 1, characterized in that: The cloud data analysis platform (2) is deployed on a cloud server and includes a database, an AI analysis model, and a user / doctor interface for storing historical data, analyzing gait trends, and generating personalized care recommendations.

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