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1. 发明申请

WO2002088628A1 LOAD MEASUREMENT DEVICE 审中-公开
标题翻译：负载测量装置
公开(公告)号：WO2002088628A1
公开(公告)日：2002-11-07
申请号：PCT/US2002/012550
申请日：2002-04-22
申请人： BBNT SOLUTION SLLC
发明人： MADDEN, Richard , McCARTY, Daniel, Joseph , THOMAS, Gary, L.
IPC分类号： G01B7/16
CPC分类号： G01L5/102 , G01G3/12 , G01L5/101
摘要： A variable reluctance load cell (10) for measuring the static or slowly fluctuating load, or tension, on devices is contained in a support tube (14). A sensor (12) in the tube utilizes opposing C and I shaped magnetic cores attached to opposing ends of the support tube (14). A magnetic circuit is formed having an inductance defined by the size of the gap between the magnetic cores with the reluctance dominated by the gap. The sensor inductance is coupled with a fixed, predetermined capacitance in a resonant LC circuit, and the resonant frequency is a function of the gap. The sensor is in a cavity within the tube, and the cavity is sealed in a manner that prevents water or other damaging agents from entering the sensor. In this manner, mounting the sensor and tube to a static device and measuring the AC voltage at the sensor, the amount of load, or stress can be determined.
摘要翻译：用于测量装置上的静态或缓慢波动的负载或张力的可变磁阻称重传感器（10）包含在支撑管（14）中。管中的传感器（12）利用连接到支撑管（14）的相对端的相对的C形和I形磁芯。形成磁路，其电感由磁芯之间的间隙的尺寸确定，其中磁阻以间隙为主。传感器电感在谐振LC电路中与固定的预定电容耦合，谐振频率是间隙的函数。传感器处于管内的空腔中，并且空腔以防止水或其它损坏剂进入传感器的方式被密封。以这种方式，将传感器和管安装到静态装置并测量传感器处的AC电压，可以确定负载量或应力。

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