Kim, Ji-Sun
(Department of Biomedical Engineering, BK21 Plus Research Institute of Biomedical Engineering, College of Biomedical and Health Science, Konkuk University)
,
Kim, A-Hee
(Department of Biomedical Engineering, BK21 Plus Research Institute of Biomedical Engineering, College of Biomedical and Health Science, Konkuk University)
,
Oh, Han-Byeol
(Department of Biomedical Engineering, BK21 Plus Research Institute of Biomedical Engineering, College of Biomedical and Health Science, Konkuk University)
,
Kim, Jun-Sik
(Department of Biomedical Engineering, BK21 Plus Research Institute of Biomedical Engineering, College of Biomedical and Health Science, Konkuk University)
,
Goh, Bong-Jun
(Department of Biomedical Engineering, BK21 Plus Research Institute of Biomedical Engineering, College of Biomedical and Health Science, Konkuk University)
,
Lee, Eun-Suk
(Department of Biomedical Engineering, BK21 Plus Research Institute of Biomedical Engineering, College of Biomedical and Health Science, Konkuk University)
,
Choi, Ju-Hyeon
(Department of Biomedical Engineering, BK21 Plus Research Institu)
,
Baek, Jin-Young
,
Jun, Jae-Hoon
The monitoring and measurement of the motion of a human joint is very important in screening for degenerative brain diseases and tracking the rehabilitation process. Since there are various medical fields to benefit from angular motion measurement, the necessity for monitoring of human joint movemen...
The monitoring and measurement of the motion of a human joint is very important in screening for degenerative brain diseases and tracking the rehabilitation process. Since there are various medical fields to benefit from angular motion measurement, the necessity for monitoring of human joint movement is increasing. In this study, the optical sensor is composed of a light emission unit with a red LED and an optical fiber, and a reception unit with an arrangement of three photodiodes. The angular detection range was widened with the use of multiple photodiodes and the developed algorithm. The result will be useful for designing an effective angular sensor with low cost and small size.
The monitoring and measurement of the motion of a human joint is very important in screening for degenerative brain diseases and tracking the rehabilitation process. Since there are various medical fields to benefit from angular motion measurement, the necessity for monitoring of human joint movement is increasing. In this study, the optical sensor is composed of a light emission unit with a red LED and an optical fiber, and a reception unit with an arrangement of three photodiodes. The angular detection range was widened with the use of multiple photodiodes and the developed algorithm. The result will be useful for designing an effective angular sensor with low cost and small size.
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제안 방법
In this study, new measurement technology using light was proposed so that it could avoid the weaknesses of previous angle measurement methods. For this achievement, relatively inexpensive, small, and light optical fiber without abrasion by electrical resistance and photodiodes with high sensitivity were used so that specific angles could be detected precisely.
In order to measure joint angle with the change in intensity of radiation that is received from the three sensors, a functional formula was acquired with inverse mathematical modeling regarding the three output signals with the use of MATLAB. Then, the angle was detected through an algorithm as illustrated in Fig.
accuracy, abrasion, durability, and size. In this study, new measurement technology using light was proposed so that it could avoid the weaknesses of previous angle measurement methods. For this achievement, relatively inexpensive, small, and light optical fiber without abrasion by electrical resistance and photodiodes with high sensitivity were used so that specific angles could be detected precisely.
In this study, the optical sensor is composed of a light emission unit which emits the light and a light reception unit that receives the intensity of radiation. The light emission unit is combined of a red LED and an optical fiber.
Physical therapy and rehabilitation treatment can be of great assistance in improving the function of a joint by focusing on range of motion exercise [7, 8]. The objective of this exercise is not only to reduce the pain, swelling, and stiffness but also to smoothly increase the range of motion.
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