论文标题
一种治疗压力球来监测手部敏感性和电肌活动
A Therapeutic Stress Ball to Monitor Hand Dexterity and Electrodermal Activity
论文作者
论文摘要
这项工作介绍了基于Triboelectric nananogenerator（TENG）治疗应力球，以提供需要各种程度物理治疗的患者的手势监测和生理数据。该设备利用5层的硅胶和编织银色涂层的尼龙绳电极来建立一个传感器网络，该网络可在半球形原型的整个表面上监视40点。使用标准ECG电路的修改版本可提供适当的载荷，噪声排斥，过滤和teng信号的相位，以及许多电极的多路复用。考虑到最终嵌入式系统，所有系统组件均选择。使用Arduino Uno和ADAD5940BIOZ评估板进行了对设备的测试，用于运动后的压力和/或疼痛。包括用于设备激活和手动震颤检测的加速度计。测试后，自动teng传感器在接触时会产生正冲动，并在从球表面释放接触后会产生负冲动。此外，通过在调节电路中维持双极信号来捕获相关的负脉冲来证明手指去除检测。 EDA结果表明银色涂层的尼龙作为潜在的良好干电极，可以与更多的电极一起用于生物阻抗或ECG捕获，以进一步扩大设备功能。基于MATLAB的GUI旨在通过微控制器的串行通信为用户提供数据跟踪和视觉监视。最后，应该注意的是，这为低成本低功耗手势跟踪提供了一种手段，而无需使用柔性电容网格阵列，并为用户提供了令人愉悦的触觉体验，人们期望由于其独特的材料设计而形成压力球。
This work presents a triboelectric nanogenerator-based (TENG) therapeutic stress ball to provide gesture monitoring and physiological data on patients requiring physical therapy of various degrees. The device utilizes a 5-layer stack of silicone and braided silver-coated nylon rope electrodes to create a sensor network that monitors 40-points across the surface of a semi-spherical prototype. A modified version of a standard ECG circuit was utilized to provide proper loading, noise rejection, filtering, and phase of the TENG signals along with multiplexing of the many electrodes. All system components were selected with a final embedded system in mind. Testing of the device was conducted utilizing an Arduino Uno and an EVAL-AD5940BIOZ evaluation board for electrodermal activity for stress and/or pain after exercise. An accelerometer was included for device activation and hand tremor detection. Upon testing, the self-powered TENG sensors produce positive impulses upon contact and negative impulses upon release of contact from the surface of the ball. Furthermore, finger removal detection was demonstrated by capturing the associated negative impulse by maintaining the bipolar signal in our conditioning circuit. EDA results indicate silver-coated nylon as a potentially good dry-electrode which can be used with even more electrodes for bio-impedance or ECG capture to further expand the device functionality. A MATLAB-based GUI was designed to provide the user with data tracking and visual monitoring of the data via serial communication from the microcontrollers. Finally, it should be noted that this provides a means for low-cost low-power gesture tracking without the use of flexible capacitive grid arrays and provides the user with a pleasant tactile experience that one expects form a stress ball due to its unique material design.
