A foot arch data acquisition device based on non-contact thermal infrared imaging

Abstract

This invention relates to the field of data health monitoring and imaging technology, providing a foot arch data acquisition device based on non-contact thermal infrared imaging. The device includes an infrared thermal information acquisition pad, an infrared sensor, and a mobile device. The infrared thermal information acquisition pad has positioning marks on the human foot. The mobile device is placed on one side of the infrared thermal information acquisition pad, and the infrared sensor is slidably mounted on the mobile device. Utilizing non-contact thermal infrared imaging technology, the subject only needs to stand on the acquisition pad, without wearing complex equipment or direct contact with the device. Operation is simple and convenient, reducing tedious preparation work and improving acquisition efficiency. Furthermore, thermal infrared imaging technology acquires temperature information by detecting the infrared radiation emitted by objects, without generating radiation, posing no harm to the subject's body, avoiding the radiation risks that may exist with traditional data acquisition technologies, and ensuring the health and safety of the subject.

Description

Technical Field

[0001] This utility model belongs to the technical field, specifically relating to a foot arch data acquisition device based on non-contact thermal infrared imaging. Background Technology

[0002] With increasing health awareness in modern society, foot health has become a crucial area of ​​concern. As a vital support system for human movement, the health of the foot directly impacts postural stability, athletic ability, and overall health. The arch of the foot is a core component of the foot structure, and its shape and function are essential for normal foot function. Abnormalities in the arch, such as flat feet and high arches, can not only cause foot pain but also trigger a series of related problems, such as dysfunction of the knee, hip, and spine. Therefore, obtaining arch data has significant clinical and social value for accurate analysis and evaluation of subsequent arch monitoring.

[0003] Traditional methods for acquiring foot arch data typically rely on physical contact or imaging techniques, but these methods have many limitations. For example:

[0004] (1) Footprint method: The footprint method infers the arch shape of the foot by observing the pressure distribution on the sole of the foot. However, this method is greatly affected by the dynamic changes in pressure distribution, making it difficult to obtain stable and accurate results. In addition, the footprint method has high requirements for the operating environment, requiring the subject to maintain a specific posture, and is easily affected by human factors during use.

[0005] (2) X-ray imaging: X-ray imaging determines the arch status of the foot by capturing the skeletal structure of the foot. Although it is highly accurate, this method has significant radiation risks, which limits its application in special groups such as children and pregnant women. At the same time, X-ray equipment is expensive, making it difficult to popularize and promote in primary healthcare institutions and personal health management.

[0006] (3) Three-dimensional scanning technology: Three-dimensional scanning technology analyzes the arch of the foot by capturing the three-dimensional shape of the foot. Although it can provide rich morphological information, the equipment is expensive, the operation is complicated, and the requirements for the scanning environment are high. This method usually requires the subject to stand or walk barefoot, which is inconvenient to operate and difficult to realize in daily life and portability.

[0007] (4) Heat-sensitive plate: The heat-sensitive plate infers the arch shape by recording the contact pressure distribution on the sole of the foot, but its resolution is limited and it is difficult to identify fine arch features. In addition, the heat-sensitive plate is highly dependent on the pressure range and distribution, and cannot effectively evaluate the arch characteristics under static and dynamic conditions. Utility Model Content

[0008] This invention provides a foot arch data acquisition device based on non-contact thermal infrared imaging, which solves the technical problems of existing foot data acquisition technologies, such as limited accuracy, inconvenient operation, high equipment cost, poor applicability, high environmental requirements, and radiation risks.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A foot arch data acquisition device based on non-contact thermal infrared imaging includes an infrared thermal information acquisition pad, an infrared sensor, and a moving device. The infrared thermal information acquisition pad is provided with human foot positioning marks, the moving device is placed on one side of the infrared thermal information acquisition pad, and the infrared sensor is slidably mounted on the moving device.

[0011] The mobile device is equipped with a slide rail, and the infrared sensor is slidably mounted in the slide rail.

[0012] A stepper motor is installed on the slide rail, and an infrared sensor is mounted on the stepper motor. The infrared sensor is slidably mounted in the slide rail via the stepper motor.

[0013] The infrared sensor is equipped with a positioning status feedback device.

[0014] The lower end of the infrared sensor is configured as a height-adjustable optical tripod.

[0015] The lower end of the infrared sensor is also provided with an angle-adjustable spherical optical bracket, which is fixed to the upper end of the optical tripod.

[0016] The infrared sensor uses an uncooled infrared detector.

[0017] The infrared sensor has an imaging resolution of 0.1°C.

[0018] The infrared sensor has an imaging speed of 30 frames per second.

[0019] The surface of the infrared thermal information collection pad is treated with an anti-slip coating.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] This utility model discloses a foot arch data acquisition device based on non-contact thermal infrared imaging. The infrared thermal information acquisition pad is equipped with human foot positioning marks, allowing the subject to accurately place their feet, ensuring consistent foot position during each acquisition. This avoids data errors caused by positional deviations, improves data accuracy and repeatability, and makes data from different acquisitions comparable, providing a stable foundation for subsequent analysis. Utilizing non-contact thermal infrared imaging technology, the subject only needs to stand on the acquisition pad, without wearing complex equipment or direct contact with the device. Operation is simple and convenient, reducing tedious preparation work and improving acquisition efficiency. Furthermore, thermal infrared imaging technology acquires temperature information by detecting the infrared radiation emitted by objects, producing no radiation and posing no harm to the subject's body. This avoids the radiation risks that may exist with traditional data acquisition technologies, ensuring the health and safety of the subject.

[0022] Furthermore, the infrared sensor has an imaging resolution of 0.1°C, which can detect extremely small temperature changes. In foot arch data acquisition, it can accurately capture subtle temperature differences in different parts of the foot arch, providing detailed and accurate data for analyzing foot arch health, blood circulation, and other aspects.

[0023] Furthermore, a stepper motor on the slide rail controls the sliding of the infrared sensor, allowing for precise control of the sensor's movement speed and position. Combined with a positioning status feedback device that monitors the sensor's position in real time, this ensures that the sensor moves along a preset path and speed, completely and accurately collecting thermal information from various parts of the arch of the foot.

[0024] Furthermore, the lower end of the infrared sensor is equipped with a height-adjustable optical tripod and an angle-adjustable spherical optical support, which can flexibly adjust the height and angle of the sensor according to actual needs, adapt to the foot conditions of different subjects and the collection environment, and make the collection process more convenient.

[0025] Furthermore, using uncooled infrared detectors as infrared sensors is less expensive than cooled infrared detectors, reducing the overall cost of the data acquisition device and making it easier to promote and apply.

[0026] Furthermore, the surface of the infrared thermal information collection pad is treated with an anti-slip coating to ensure the safety of the subject when standing, making it suitable for people of different ages and physical conditions. At the same time, the device has relatively low environmental requirements and can work stably in various environments, demonstrating strong applicability. Attached Figure Description

[0027] Figure 1 : Structural diagram of a non-contact thermal infrared imaging foot arch data acquisition device;

[0028] Figure 2 Schematic diagram of infrared thermal information collection pad;

[0029] Figure 3Schematic diagram of the mobile device structure;

[0030] Figure 4 Schematic diagram of an infrared sensor structure.

[0031] Labeling Explanation: 1. Infrared thermal information acquisition pad; 2. Infrared sensor; 3. Mobile device; 4. Spherical optical bracket; 5. Optical tripod; 6. Stepper motor; 7. Positioning status feedback device. Detailed Implementation

[0032] To further understand the present invention, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. It should be understood that the embodiments are merely illustrative and not intended to limit the scope of the invention.

[0033] See Figures 1 to 4 This invention relates to a non-contact thermal infrared imaging foot arch data acquisition device, primarily used to achieve high-precision acquisition of foot thermal infrared data under radiation-free and non-contact conditions, providing reliable input data for subsequent foot arch analysis. The foot arch data acquisition device mainly comprises four parts: an infrared thermal information acquisition pad 1, an infrared sensor 2, and a moving device 3. The moving device 3 is placed on one side of the infrared thermal information acquisition pad 1, and the infrared sensor 2 is slidably mounted on the moving device 3, sliding along the moving device 3. The function and design of each part are described in detail below.

[0034] The infrared thermal information acquisition pad 1 is one of the core components of the entire arch data acquisition system. Its main function is to provide a standardized contact surface for the sole of the foot and record the thermal radiation information of the sole after it comes into contact with the pad. Figure 2 As shown, the infrared thermal information collection pad 1 is made of a highly thermally conductive and durable material with dimensions of 200cm x 70cm. It can be made of thermoplastic elastomer to rapidly and evenly conduct heat from the soles of the feet, thereby improving the accuracy of thermal information collection. The surface of the infrared thermal information collection pad 1 is treated with an anti-slip coating to ensure that the subject will not slip while standing or walking, enhancing the safety of the testing process. The material of the infrared thermal information collection pad 1 maintains stable performance under different ambient temperatures, ensuring accurate collection of thermal radiation information. The surface of the infrared thermal information collection pad 1 has clear, standardized human foot positioning marks to ensure that the subject can accurately place their feet, thus obtaining more consistent test data.

[0035] Infrared sensor 2 is responsible for capturing thermal infrared image data of the sole of the foot and converting this data into input data that can be analyzed. Infrared sensor 2 employs a high-sensitivity uncooled infrared detector, enabling it to capture the temperature distribution of the sole in real time without contact. With an imaging resolution as high as 0.1°C, infrared sensor 2 can capture subtle changes in the thermal distribution of the sole, laying the foundation for accurate analysis of the arch shape of the foot. Figure 4 As shown, the lower end of the infrared sensor 2 consists of a height-adjustable optical tripod 5 and an angle-adjustable spherical optical support 4. The spherical optical support 4 is fixed to the upper end of the optical tripod 5. The optical tripod 5 and the spherical optical support 4 provide the infrared sensor 2 with a sufficiently wide field of view to cover the entire sole area, avoiding image loss due to field-of-view limitations. The infrared sensor 2 achieves an imaging speed of 30 frames per second, which meets the needs of dynamic detection, such as recording changes in the thermal distribution of the sole of the foot during walking.

[0036] In this embodiment, the mobile device 3 uses a slide rail, and the infrared sensor 2 is slidably mounted on the slide rail. By sliding along the track, the infrared sensor 2 achieves a full-coverage scan of the subject's sole area. The slide rail employs high-precision electric control technology, enabling the sensor to move smoothly along a preset path, thereby obtaining continuous and consistent image data. Specifically, the high-precision electric control of the slide rail involves equipping it with a high-precision stepper motor 6 and a positioning feedback device 7. The stepper motor 6 controls the movement speed of the infrared sensor 2 on the slide rail, while the positioning feedback device 7 monitors the position information of the infrared sensor 2 on the slide rail. The stepper motor 6 and the positioning feedback device 7 ensure a highly stable movement path and speed for the infrared sensor 2, preventing data distortion caused by jitter or offset during the sliding process. The length and width of the slide rail are adjustable to accommodate the foot scanning needs of subjects of different body types, and it supports both single-foot and dual-foot modes. In this embodiment, the slide rail is 210cm long and 5cm wide, and the infrared sensor 2, which is slidably mounted on it, is 10cm wide. Figure 3 As shown in the diagram. The above structural design achieves a modular design for the slide rail, enabling rapid installation and commissioning, and facilitating its use in various locations.

[0037] The subject stands according to the standardized human foot positioning marks on the infrared thermal information acquisition pad 1, ensuring that the sole of the foot is perfectly aligned with the mark position. The subject remains still during this standing period, and the entire acquisition process lasts approximately 12 seconds. The heat emitted from the subject's sole, and the heat emitted from different parts of the sole, is evenly conducted through the infrared thermal information acquisition pad 1, leaving corresponding infrared thermal information on the pad. The staff sets the preset speed parameters for the stepper motor 6, which starts with the initial settings. The stepper motor 6 drives the infrared sensor 2 to move from heel to toe along the slide rail on the moving device 3, sequentially capturing the infrared thermal information of the sole area. The infrared sensor 2 converts the collected infrared thermal information into thermal infrared image data, providing reliable input data for subsequent arch analysis.

[0038] During the data collection process, the subject stood at the foot positioning mark on the infrared thermal information collection pad 1 to ensure consistency in foot position during each collection. This effectively avoided data errors caused by foot position deviations, making the data from different collections comparable and providing a stable and reliable foundation for subsequent analysis. The infrared sensor 2 scanned the thermal infrared information of the sole left on the infrared thermal information collection pad 1 to further generate thermal infrared image data. This avoided abnormal heat accumulation or dissipation caused by uneven local pressure on the sole or individual foot shape differences, resulting in a more stable and uniform presentation of the thermal signal across the entire sole. This helped the infrared sensor 2 capture comprehensive and accurate thermal infrared image data.

[0039] During the foot data acquisition process, the positioning status feedback device 7 reflects the position information of the infrared sensor 2 on the slide rail in real time. Based on this position information, the operator compares the position of the infrared sensor 2 with the preset scanning path to determine if it is moving along the predetermined trajectory. If the operator determines that the actual position of the infrared sensor 2 deviates from the preset path, they adjust the operating state of the stepper motor 6 to control the movement of the infrared sensor 2. By continuously monitoring and adjusting the infrared sensor 2, the operator ensures that it moves smoothly along the preset path on the slide rail, thereby achieving full coverage scanning of the subject's foot area and obtaining continuous and consistent image data. Simultaneously, based on the position information provided by the positioning status feedback device 7, the operator controls the infrared sensor 2 to acquire data at specific locations, improving the accuracy and reliability of the scan.

[0040] The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of this utility model. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this utility model should be covered within the protection scope of the claims of this utility model.

Claims

1. A foot arch data acquisition device based on non-contact thermal infrared imaging, characterized in that, It includes an infrared thermal information collection pad (1), an infrared sensor (2) and a mobile device (3). The infrared thermal information collection pad (1) is provided with a human foot positioning mark. The mobile device (3) is placed on one side of the infrared thermal information collection pad (1). The infrared sensor (2) is slidably mounted on the mobile device (3).

2. The foot arch data acquisition device based on non-contact thermal infrared imaging according to claim 1, characterized in that, The mobile device (3) is equipped with a slide rail, and the infrared sensor (2) is slidably installed in the slide rail.

3. The foot arch data acquisition device based on non-contact thermal infrared imaging according to claim 2, characterized in that, A stepper motor (6) is provided on the slide rail, and an infrared sensor (2) is installed on the stepper motor (6). The infrared sensor (2) is slidably disposed in the slide rail through the stepper motor (6).

4. The foot arch data acquisition device based on non-contact thermal infrared imaging according to claim 3, characterized in that, The infrared sensor (2) is equipped with a positioning status feedback device (7).

5. The foot arch data acquisition device based on non-contact thermal infrared imaging according to claim 4, characterized in that, The lower end of the infrared sensor (2) is configured as a height-adjustable optical tripod (5).

6. The foot arch data acquisition device based on non-contact thermal infrared imaging according to claim 5, characterized in that, The infrared sensor (2) is also provided with an angle-adjustable spherical optical bracket (4) at its lower end, which is fixed to the upper end of the optical tripod (5).

7. The foot arch data acquisition device based on non-contact thermal infrared imaging according to claim 6, characterized in that, The infrared sensor (2) is an uncooled infrared detector.

8. The foot arch data acquisition device based on non-contact thermal infrared imaging according to claim 7, characterized in that, The infrared sensor (2) has an imaging resolution of 0.1°C.

9. A foot arch data acquisition device based on non-contact thermal infrared imaging according to claim 7, characterized in that, The infrared sensor (2) has an imaging speed of 30 frames per second.

10. A foot arch data acquisition device based on non-contact thermal infrared imaging according to claim 1, characterized in that, The surface of the infrared thermal information collection pad (1) is treated with anti-slip treatment.

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