Development of various health monitoring devices for health monitoring applications such as spine monitoring, respiration rate, heart rate, as well as upper and lower limb motion detections are at increasing rate. The use of optical fiber-based devices provides significant contribution in this area due to their advantages such as immunity to electromagnetic interference, lightweight and possibly small sensor setup. However, the application of intensity-based optical fiber sensor for human joint motion detections resulted in limited detection angle, where most sensor are not able to detect more than 90 deg. angle. To improve this limitation, we propose an optical sensor approach with mechanical-assisted components assembly that translates angular movement to linear movement. The light detection on the photodiode array at different pixels is analyzed to represent the angle movement of the knee. Based on our study, the proposed device can be applied to detect angle between 0 - 160⁰ with an accuracy of 0.08⁰. The obtained results make it possible to apply this technique as knee monitoring device.

用于健康监测应用的各种健康监测设备（例如脊柱监测，呼吸频率，心率以及上肢和下肢运动检测）的开发正在不断增加。由于基于光纤的设备具有诸如抗电磁干扰，重量轻和可能的传感器设置小等优点，因此在此领域的使用为该领域做出了重大贡献。但是，基于强度的光纤传感器在人体关节运动检测中的应用导致检测角度受到限制，其中大多数传感器无法检测到超过90度的角度。角度。为了改善此限制，我们提出了一种具有机械辅助组件的光学传感器方法，该方法将角运动转换为线性运动。分析在不同像素处的光电二极管阵列上的光检测，以表示膝盖的角度运动。根据我们的研究，该装置可用于检测0-160⁰之间的角度，精​​度为0.08⁰。所获得的结果使得可以将该技术用作膝盖监测装置。