来自韩国的科学家Daegu Gyeongbuk科学技术学院(DGIST) have developed low-cost multi-directional pressure sensors using 3D printed conductive polymer composites as their building blocks.
该传感器的设计目的是克服3D印刷传感器的当前局限性在温度对电阻的影响以及仅沿单个方向上施加力的能力。
低成本3D打印压力传感器嵌入了温度传感成分以进行电阻校准，据报道可以大规模生产用于能源，生物医学和制造扇区的广泛应用，例如机器人抓地力和触觉传感器。
DGIST的Hoe Joon Kim教授说：“我们的多轴压力传感器即使使用了标题的力量，也能成功捕获读数。”“此外，温度感应组件可以随温度变化来校准电阻变化。
“In addition, the scalable and low-cost fabrication process is fully compatible with commercial printers.”
3D打印传感器
Artificial Intelligence (AI) sensors have been named asone of the top emerging technologiesto watch in 2021 by勒克斯研究. Researchers and industry players alike are increasingly leveraging 3D printing to produce a wide array of light, motion, and bacteria-sensitive devices for a whole host of applications within healthcare, robotics, and consumer goods.
Recent research developments in this area include3D printed biosensorscapable of protecting wearers from UV overexposure,flexible wearable motion sensorsdesigned for soft robotics and wound dressing applications, and3D打印传感器这使人能够与可变形的软机器人系统进行远程相互作用。
就在上个月，总部位于中国的科学家，巴基斯坦和香港开发了新颖的3D印刷传感器，可以用作basis for “smart beds” of the future，使员工能够监视患者的福祉并跟踪他们的睡眠方式。
3D打印传感器的潜在好处也引起了Google的注意Advanced Technology and Projects(ATAP) division, which has leveraged 3D printer OEMStratasys’PolyJet 3D打印技术以其可穿戴状态原型雅加德electronic motion sensors.
dgist’s 3D printed multifunctional sensor
Flexible pressure sensors that are simple, lightweight, and low-cost, have gained increasing attention for their ability to accurately sense applied pressure during the treatment of medical issues such as abnormal gait and muscular disorders.
但是，根据DGIST科学家的说法，到目前为止生产的3D印刷传感器仅限于沿单个方向的传感应用力，这涉及现实世界应用的需求，这些应用程序涉及可以在各个角度和方向上应用力的情况。此外，他们确定大多数导电聚合物的电阻随温度而变化，需要解决以实现准确的压力感应。
为了克服这些传感器的局限性，科学家踏上设计多轴压力传感器，并使用3D打印技术结合温度感应组件。
They began by preparing a printable conductive polymer using multi-walled carbon nanotubes and PLA. The resulting composite filament was then 3D printed alongside a commercial elastomer and sensing material to form the body of the sensor, which is based on a bumper structure with a hollow trough beneath. The 3D printed sensor employs three pressure-sensing elements to allow for multi-axis pressure detection and a temperature-sensing element for calibration of electrical resistance.
在测试过程中，将传感器安装在3D打印的触发器和手抓手中，并能够通过评估每个压力感应元件的响应来校准施加力的大小和方向。因此，传感器能够检测到人类运动和抓紧动作之间的明显区别。
Kim说：“拟议的3D打印技术在能源，生物医学和制造业方面具有广泛的应用。”“通过在机器人握手和触觉传感器中掺入所提出的传感元素，可以实现多向力以及温度的检测，这使机器人技术新时代的发作预示着。”
有关该研究的更多信息可以在标题为：“Additive manufacturing of high-performance carbon-composites: An integrated multi-axis pressure and temperature monitoring sensor”，发表于复合材料B部分：工程。该研究由H. Kim，S。Hajra，D。Oh，N。Kim和H. J. Kim合着。
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特色图片显示dgistscientists have developed a novel, multi-directional pressure sensor using 3D printing technology that is low-cost and scalable to large-scale production of smart robotic systems. Photo via DGIST.
