Cognisense
Cognisense
复制标题
DOI：
10.1145/3485730.3492879
复制
发表时间：
2021-11
期刊：
影响因子：
--
通讯作者：
M. Heggo;Laksh Bhatia;J. Mccann
中科院分区：
文献类型：
--
作者：
M. Heggo;Laksh Bhatia;J. Mccann
一些工程应用需要可靠的转速测量来确保其正常运行。转速测量可用于增强机器的振动信号分析，并且还可以引出单独通过振动监测无法检测到的故障。用于转速测量的现有技术传感器是光学、磁性和机械转速计。这些传感器需要视线和直接进入机器，这限制了它们的用例。在本演示中，我们展示了Cognisense，这是一种基于RF的软硬件传感系统，它使用轨道角动量（OAM）波来精确测量机器的转速。Cognisense在单基地雷达配置中使用了一种新型的紧凑型贴片天线，能够在5GHz免许可频段发送和接收OAM波。演示将显示Cognisense在不同数量的刀片，尺寸和材料的机器上工作。我们还将介绍Cognisense如何在传统转速计失效的非视距场景中可靠地运行。我们演示了Cognisense如何在高散射场景中工作，并且不受转子叶片材料的影响。与光学转速计需要正面面对机器不同，我们的演示还将展示Cognisense在系统和机器之间存在倾斜角的情况下可靠地运行，这是光学转速计无法实现的。
Several engineering applications require reliable rotation speed measurement for their correct functioning. The rotation speed measurements can be used to enhance the machines' vibration signal analysis and can also elicit faults undetectable by vibration monitoring alone. The current state of the art sensors for rotation speed measurement are optical, magnetic and mechanical tachometers. These sensors require line-of-sight and direct access to the machine which limits their use-cases. In this demo, we showcase Cognisense, an RF-based hardware-software sensing system that uses Orbital Angular Momentum (OAM) waves to accurately measure a machine's rotation speed. Cognisense uses a novel compact patch antenna in a monostatic radar configuration capable of transmitting and receiving OAM waves in the 5GHz license-exempt band. The demo will show Cognisense working on machines with varied numbers of blades, sizes and materials. We will also present how Cognisense operates reliably in non-line-of-sight scenarios where traditional tachometers fail. We demonstrate how Cognisense works well in high-scattering scenarios and is not impacted by the material of rotor blades. Unlike optical tachometers that require one to face the machine head-on, Our demo will also show Cognisense performing reliably in the presence of a tilt angle between the system and the machine which is not possible with optical tachometers.