Department of Electronic Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea.
Institute of Nano Science and Technology, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea.
Sensors (Basel). 2021 Jun 22;21(13):4274. doi: 10.3390/s21134274.
In this article we report on a 3 × 3 mm tactile interaction sensor that is able to simultaneously detect pressure level, pressure distribution, and shear force direction. The sensor consists of multiple mechanical switches under a conducting diaphragm. An external stimulus is measured by the deflection of the diaphragm and the arrangement of mechanical switches, resulting in low noise, high reliability, and high uniformity. Our sensor is able to detect tactile forces as small as ~50 mgf along with the direction of the shear force. It also distinguishes whether there is a normal pressure during slip motion. We also succeed in detecting the contact shape and the contact motion, demonstrating potential applications in robotics and remote input interfaces. Since our sensor has a simple structure and its function depends only on sensor dimensions, not on an active sensing material, in comparison with previous tactile sensors, our sensor shows high uniformity and reliability for an array-type integration.
本文报道了一种 3×3 毫米的触觉交互传感器，它能够同时检测压力水平、压力分布和剪切力方向。该传感器由多个机械开关组成，位于导电膜下方。外部刺激通过膜片的挠度和机械开关的布置来测量，从而实现低噪声、高可靠性和高均匀性。我们的传感器能够检测小至约 50mgf 的触觉力以及剪切力的方向。它还能区分在滑动运动期间是否存在正压力。我们还成功地检测到了接触形状和接触运动，展示了在机器人和远程输入接口中的潜在应用。由于我们的传感器结构简单，其功能仅取决于传感器尺寸，而不取决于主动感测材料，与以前的触觉传感器相比，我们的传感器在阵列式集成方面具有更高的均匀性和可靠性。
