公开(公告)号：US20020043106A1

公开(公告)日：2002-04-18

申请号：US09870025

申请日：2001-05-30

Applicant: SWANTECH, L.L.C.

Inventor： David B. Board

IPC: G01L001/00

CPC classification number: G01N29/42 ,  G01H1/003 ,  G01L1/255 ,  G01N29/045 ,  G01N29/12 ,  G01N29/227 ,  G01N29/36 ,  G01N2291/014 ,  G01N2291/015 ,  G01N2291/02827 ,  G01N2291/269

Abstract: A sensor for detecting stress waves for use in a stress wave analysis system. The stress waves are preferably detected in a narrow frequency range of 35-40 KHz. At this range, stress waves from friction and impact sources typically propagate through machine structures at detectable amplitudes. In order to maximize the signal to noise ratio of stress waves, relative to background noise and vibration, the sensor of the present invention is designed and calibrated with a frequency response and damping features that are specifically tailored for stress wave analysis. The sensor is a multi-functional sensor that can measure a number of logically related parameters for indicting the mechanical condition of a machine. It is often desirable to measure both friction and one or more other parameters appropriate for indication of a machine's health, where all of the measuring capability is contained in one sensor. The multi-functional capability of the present invention significantly reduces the acquisition, installation, and maintenance costs of the condition monitoring instrumentation system.

Abstract translation: 一种用于检测应力波分析系统应用的传感器。 应力波优选在35-40KHz的窄频范围内检测。 在这个范围内，来自摩擦和冲击源的应力波通常以可检测的振幅传播通过机械结构。 为了使应力波的相对于背景噪声和振动的信噪比最大化，本发明的传感器被设计和校准，其具有针对应力波分析专门定制的频率响应和阻尼特征。 传感器是一种多功能传感器，可以测量多个与逻辑相关的参数，用于指示机器的机械状态。 通常希望测量摩擦和适合于指示机器健康的一个或多个其它参数，其中所有测量能力都包含在一个传感器中。 本发明的多功能能力显着降低了状态监测仪表系统的采集，安装和维护成本。