公开(公告)号：EP2459977B1

公开(公告)日：2018-06-13

申请号：EP10739795.2

申请日：2010-07-28

申请人： Vishay Precision Group, Inc.

发明人： ZANDMAN, Felix ,  WATSON, Robert B. ,  KIEFFER, Thomas P.

IPC分类号： G01B21/04 ,  G01B7/16 ,  G01L1/22

CPC分类号： G01L1/2243 ,  G01B7/18 ,  G01B21/045 ,  G01L1/2262 ,  G01L1/2281 ,  Y10T29/49007

摘要： A methodology for selecting and properly placing foil strain gages on a transducer in a Wheatstone bridge, which provides a more consistent creep response, especially when the transducer temperature is changed. A transducer includes a counterforce subjected to a predetermined physical load that provides tension and compression strains (positive and negative, respectively). The transducer also includes a plurality of strain gage grids that are operatively attached to the counterforce in the tension and compression strain areas of the counterforce and generate electrical signals. The plurality of strain gages are electrically connected in a Wheatstone bridge circuit where their electrical signals due to creep are cancelled.

公开(公告)号：EP2941777A1

公开(公告)日：2015-11-11

申请号：EP14735238.9

申请日：2014-01-03

申请人： Vishay Precision Group, Inc.

发明人： WATSON, Robert B. ,  KIEFFER, Thomas P. ,  SHOWALTER, Rebecca L.

IPC分类号： H01C17/23 ,  G01L1/22 ,  G01B7/16

CPC分类号： G01L1/2287 ,  H01C17/23

摘要： An electrical resistance strain gage includes a uniformly distributed electrical resistance of the active measuring area and a discrete electrical trim resistance within an active measuring are. The trim resistance may include an electrical conductor in an electrically parallel circuit such that the electrical conductor may be selectively electrically removed from the strain gage to trim the electrical resistance of the strain gage. The trim resistance does not modify the active strain sensing area or uniform grid length.

公开(公告)号：EP2459977A1

公开(公告)日：2012-06-06

申请号：EP10739795.2

申请日：2010-07-28

申请人： Vishay Precision Group, Inc.

发明人： ZANDMAN, Felix ,  WATSON, Robert B. ,  KIEFFER, Thomas P.

IPC分类号： G01L1/22 ,  G01B5/30

CPC分类号： G01L1/2243 ,  G01B7/18 ,  G01B21/045 ,  G01L1/2262 ,  G01L1/2281 ,  Y10T29/49007

摘要： A methodology for selecting and properly placing foil strain gages on a transducer in a Wheatstone bridge, which provides a more consistent creep response, especially when the transducer temperature is changed. A transducer includes a counterforce subjected to a predetermined physical load that provides tension and compression strains (positive and negative, respectively). The transducer also includes a plurality of strain gage grids that are operatively attached to the counterforce in the tension and compression strain areas of the counterforce and generate electrical signals. The plurality of strain gages are electrically connected in a Wheatstone bridge circuit where their electrical signals due to creep are cancelled.

摘要翻译： 选择和适当地将薄片应变计放置在惠斯通电桥中的传感器上的方法，其提供更一致的蠕变响应，特别是当换能器温度改变时。 换能器包括经受预定物理负荷的反作用力，其提供张力和压缩应变（分别为正和负）。 换能器还包括多个应变计格栅，其可操作地连接到反作用力的张力和压缩应变区域中的反作用力并产生电信号。 多个应变片在惠斯登电桥电路中电连接，其中由于蠕变而导致的电信号被消除。