WiForceSticker：无电池、薄贴纸式柔性力传感器
WiForceSticker: Batteryless, Thin Sticker-like Flexible Force Sensor
摘要：
任何两个相互接触的物体都会产生一个力，这个力可能仅仅是由于重力或机械接触造成的，比如机械臂抓住一个物体，甚至是我们膝关节处两块骨头之间的接触。自然测量和监测这些接触力的能力允许从仓库管理（根据重量检测有缺陷的包裹）到机器人（使机器人手臂的抓握像人类皮肤一样敏感）和医疗保健（膝盖植入物）的大量应用。设计一种可以自然地用于所有这些应用的无处不在的力传感器具有挑战性。首先，传感器应该足够小，以适应狭窄的空间。接下来，我们不想铺设笨重的电缆来读取传感器的力值。最后，我们需要有一个无电池的设计，以满足体内应用。我们开发了WiForceSticker，这是一种无线、无电池、类似贴纸的力传感器，可以无处不在地部署在任何表面上，例如所有仓库包裹、机器人手臂和膝关节。WiForceSticker首先设计了一款微型$4$ ~mm~ $\times$ ~ $2$ ~mm~ $\times$ ~ $0.4$ ~mm电容式传感器设计，配备了设计在柔性PCB基板上的$10$ ~mm~ $\times$ ~ $10$ ~mm天线。其次，它引入了一种新的机制，通过将传感器与COTS RFID系统连接，可以通过远程读取器无线读取周围RF辐射上的力信息，而无需在力传感器处使用任何电池或有源组件。该传感器可以检测$0$ - $6$ ~N范围内的力，在多种测试环境中具有$<0.5$ ~N的感测精度，并且在传感器上按压超过$10,000$的力水平的情况下进行评估。我们还展示了我们设计的传感器的两个应用案例研究，称重仓库包装和传感骨关节施加的力。
英文摘要：
Any two objects in contact with each other exert a force that could be simply due to gravity or mechanical contact, such as a robotic arm gripping an object or even the contact between two bones at our knee joints. The ability to naturally measure and monitor these contact forces allows a plethora of applications from warehouse management (detect faulty packages based on weights) to robotics (making a robotic arms' grip as sensitive as human skin) and healthcare (knee-implants). It is challenging to design a ubiquitous force sensor that can be used naturally for all these applications. First, the sensor should be small enough to fit in narrow spaces. Next, we don't want to lay cumbersome cables to read the force values from the sensors. Finally, we need to have a battery-free design to meet the in-vivo applications. We develop WiForceSticker, a wireless, battery-free, sticker-like force sensor that can be ubiquitously deployed on any surface, such as all warehouse packages, robotic arms, and knee joints. WiForceSticker first designs a tiny $4$~mm~$\times$~$2$~mm~$\times$~$0.4$~mm capacitative sensor design equipped with a $10$~mm~$\times$~$10$~mm antenna designed on a flexible PCB substrate. Secondly, it introduces a new mechanism to transduce the force information on ambient RF radiations that can be read by a remotely located reader wirelessly without requiring any battery or active components at the force sensor, by interfacing the sensors with COTS RFID systems. The sensor can detect forces in the range of $0$-$6$~N with sensing accuracy of $<0.5$~N across multiple testing environments and evaluated with over $10,000$ varying force level presses on the sensor. We also showcase two application case studies with our designed sensors, weighing warehouse packages and sensing forces applied by bone joints.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
