Sole pressure distribution detector based on total internal reflection principle
A plantar pressure and distribution detection technology, applied in the field of biomedical engineering, can solve the problems of fragile sensors, complicated leads, and low position resolution
Inactive Publication Date: 2004-05-26
TSINGHUA UNIV
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The methods for detecting plantar pressure distribution mainly include: 1) The plantar pressure distribution detection device of special piezoelectric and piezoresistive force sensing arrays. This device can be made into insoles and placed in shoes due to its thin thickness. It is widely used in foreign countries, but its disadvantage is that it is expensive, the sensor is easily damaged, and it needs to be replaced after several tests, the test consumption is high, and the position resolution is also low. The sensor size is 5mm×7mm
2) A plantar pressure distribution detection device composed of a plurality of common force sensors, such as the three-dimensional distribution force tester proposed by the utility model patent with the patent publication number CN2234088Y, the sensor is composed of 6 strain gauges with an inner section of 12mm × 12mm Not only the position resolution is low, but also the leads are very complicated
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[0009] Such as figure 1 As shown, the plantar pressure distribution detection device based on the principle of total internal reflection designed by the present invention includes a transparent film 1 , a transparent rigid plate 3 , an imaging lens 6 , a light receiver 7 and an image processing system 8 . The transparent film 1 is placed on the transparent rigid plate 3, the imaging lens 6 is placed below the transparent rigid plate 3, the light receiver 7 under the lens 6 receives the image formed by the lens, and the image processing system 8 receives the image for processing . Light sources 4 are arranged on both sides of the transparent rigid plate 3, and mark points 2 are arranged on the plate.
[0010] The working principle of the device of the present invention is: the light emitted by the light source 4 on both sides of the transparent rigid plate 3 enters the plate from the side of the plate to produce total reflection, and the film 1 is closely attached to the rigid...
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The planta pressure distribution detecting device includes transparent film, transparent rigid plate, imaging system, light receiver and image processing system. The transparent film is placed on the transparent rigid plate, the imaging system is placed under the transparent rigid plate, and the light receiver positioned under the lens can be used for receiving image formed through the lens, the image processing system can receive image and process said image, and can be combined with computer processing system and optical image collecting equipment to create a set of planta pressure image test and analysis system to make continuous collection and processing of pressure image of walking whole process and implement test and analysis of planta dynamic and static pressure distribution.
Description
technical field [0001] The invention relates to a human body plantar pressure distribution detection device based on the principle of total internal reflection, which belongs to the field of biomedical engineering. Background technique [0002] Plantar pressure distribution reflects information about the structure and function of the foot, as well as the posture of movement of the whole body. Test and analyze the plantar pressure, which can obtain the physiological and pathological parameters of the human body in various postures and sports postures, and is widely used in competitive sports training, joint disease diagnosis, surgical effect evaluation, rehabilitation process evaluation, sports biomechanics research and other fields . The methods for detecting plantar pressure distribution mainly include: 1) The plantar pressure distribution detection device of special piezoelectric and piezoresistive force sensing arrays. This device can be made into insoles and placed in s...
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IPC IPC(8): A61B5/22G01L1/24
Inventor 王人成姜明文金德闻刘勇徐琰恺
Owner TSINGHUA UNIV