Distributed Photo-Plethysmograph Fingernail Sensors: Finger Force Measurement Without Haptic Obstruction
Distributed Photo-Plethysmograph Fingernail Sensors: Finger Force Measurement Without Haptic Obstruction
复制标题
分布式光电体积描记器指甲传感器：无触觉障碍的手指力测量
DOI：
10.1115/imece1999-0010
复制
发表时间：
1999
期刊：
影响因子：
--
通讯作者：
H. Asada
中科院分区：
文献类型：
--
作者：
S. Mascaro;H. Asada
对一种新型的用于检测指尖接触压力的触摸传感器进行了改进。指甲上装有微型LED和光电探测器的空间分布阵列，以便测量当指尖压在表面上时指甲颜色图案的变化。与传统的电子手套不同，传感器垫放置在手指和环境表面之间，这种新的传感器允许手指直接接触环境，而不会阻碍人类的自然触觉。通过测量指甲颜色的变化来检测手指触摸力，因此传感器安装在指甲上而不是指尖上。光反射体积描记法用于测量指甲颜色的模式-即指甲下的血液含量。血流动力学建模用于研究指甲下多个位置处的血容量变化的动力学。该模型进行了模拟，然后通过与传感器的实验动态响应的比较进行评估。
Improvement on a new type of touch sensor for detecting contact pressure at human fingertips is presented. A fingernail is instrumented with spatially distributed arrays of miniature LEDs and photodetectors in order to measure changes in the nail color pattern when the fingertip is pressed against a surface. Unlike traditional electronic gloves, in which sensor pads are placed between the fingers and the environment surface, this new sensor allows the fingers to directly contact the environment without obstructing the human’s natural haptic senses. The finger touch force is detected by measuring changes in the nail color, hence the sensor is mounted on the fingernail rather than on the fingertip. Photo-reflective plethysmography is used to measure the pattern of nail color — i.e. the blood content under the fingernail. Hemodynamic modeling is used to investigate the dynamics of the change in blood volume at multiple locations under the fingernail. The model is simulated and then evaluated by comparison with the experimental dynamic response of the sensor.