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公开(公告)号：EP3964789A1
公开(公告)日：2022-03-09
申请号：EP21194823.7
申请日：2021-09-03
摘要： A strain gauge (200) includes a resistor (250) formed of a doped silicon material, a conductive shield (260), and an isolation element (270) disposed between the resistor (250) and the conductive shield (260). The isolation element (270) electrically isolates the resistor (250) from the conductive shield (260).
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公开(公告)号：EP3865833A1
公开(公告)日：2021-08-18
申请号：EP21156750.8
申请日：2021-02-12
发明人： Pedrick, Michael , Liu, Shenghua , Wang, Benxiang , Qiu, Ling , Luo, Zhong , Fu, Weixing
IPC分类号： G01G19/02
摘要： Weigh-in-motion sensor (200) comprising a beam (104) with a load-bearing top surface (110), and including a base wall (208) and a cover (210) with a cavity (116) therebetween. A sensing package (106) is disposed within the cavity (116) and is under pre-load between the cover (210) and the base wall (208). The sensing package (106) comprises a piezoelectric element (228) disposed in a guide (238) and interposed between an upper or first electrode (224) and a lower or second electrode (226). Insulators (244, 246) are interposed between the respective electrodes (224, 226) and the cover (210) and the base wall (208). An aperture (248) is formed within the base wall (208) and a fastener (244) is disposed in the aperture (248) and in contact with a substrate (229) to impose a preload on the sensing package (106). The fastener (244) has a diameter (D1) which is larger than a transverse dimension (D2) of the piezoelectric element (228) (e.g., about 10 percent larger) to provide an improved degree of beam stress reduction without sacrificing sensor measurement sensitivity.
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公开(公告)号：EP3287758B1
公开(公告)日：2020-09-23
申请号：EP17001428.6
申请日：2017-08-24
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公开(公告)号：EP3186593B1
公开(公告)日：2020-06-24
申请号：EP14900551.4
申请日：2014-10-31
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公开(公告)号：EP3620768A2
公开(公告)日：2020-03-11
申请号：EP19191897.8
申请日：2019-08-15
发明人： Mei, Hai , Hu, Qineng
摘要： A load cell (200) that includes a beam (202) extending from a fixed section (204) to a load section (206) including a deflection section (208) that moves under a load and a central beam section (211) spaced from the deflection section (208). At least one strain gauge (216) is coupled to the beam (202) for detecting movement of the beam (202). Stop elements (234, 238, 242) each include a respective bearing surface (244, 246, 248) and are coupled to the beam (202) and configured such that each bearing surface (244, 246, 248) does not engage the beam (202) in a first position and engages the beam (202) in a second position.
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公开(公告)号：EP3111184A1
公开(公告)日：2017-01-04
申请号：EP15755847.9
申请日：2015-02-27
IPC分类号： G01L9/00
CPC分类号： G01L9/0054 , G01L9/0042 , G01L9/0052 , G01L13/025 , G01L19/0038 , H01L2224/48091 , H01L2224/73265 , H01L2924/00014
摘要： A differential pressure sensor includes a pressure sensing die comprising a semiconductor die, having a thinned portion forming a diaphragm. The diaphragm includes piezo-resistive elements that exhibit varying resistance based on force exerted on the diaphragm. A first support structure is bonded to a first surface of the semiconductor die, having an aperture defined through the support structure such that a first surface of the diaphragm is exposed through the aperture. A second support structure is bonded to the opposite side of the semiconductor die having an aperture aligned with the opposing side of the diaphragm. Electrical components in electrical communication with the piezo-resistive elements are arranged outside the region defined by the bond between the first and second support structures and the semiconductor die. An oil-filled volume may be defined between the semiconductor die and a harsh medium which transmits a fluid pressure to the die without the harsh medium contacting the die.
摘要翻译： 差压传感器包括具有形成隔膜的变薄部分的半导体管芯的压力检测管芯。 隔膜包括基于施加在隔膜上的力而呈现变化的阻力的压电元件。 第一支撑结构被结合到半导体管芯的第一表面，具有通过支撑结构限定的孔，使得隔膜的第一表面通过该孔露出。 第二支撑结构被结合到具有与隔膜的相对侧对准的孔的半导体管芯的相对侧。 与压电元件电连通的电气部件设置在由第一和第二支撑结构与半导体管芯之间的接合限定的区域的外部。 可以在半导体管芯和粗糙介质之间限定充油体积，该苛性介质将流体压力传递到模具，而没有与模具接触的粗糙介质。
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公开(公告)号：EP3111182A1
公开(公告)日：2017-01-04
申请号：EP15754730.8
申请日：2015-02-27
IPC分类号： G01L9/00
CPC分类号： G01L9/0054 , G01F1/34 , G01F1/38 , G01L13/025 , G01L19/0627 , G01L2009/0066
摘要： A differential pressure sensor includes a pressure sensing die including a semiconductor die, having a thinned portion forming a diaphragm. The diaphragm includes piezo-resistive elements that exhibit varying resistance based on force exerted on the diaphragm. A first support structure is bonded to a first surface of the semiconductor die, having an aperture defined through the support structure such that a first surface of the diaphragm is exposed through the aperture. A second support structure is similarly bonded to the opposite side of the semiconductor die. Electrical components in electrical communication with the piezo-resistive elements are arranged outside the region defined by the bond between the first and second support structures and the semiconductor die. An oil-filled volume may be defined between the semiconductor die and a harsh medium which transmits a fluid pressure to the die without the harsh medium contacting the die.
摘要翻译： 压差传感器包括压力传感管芯，该压力传感管芯包括半导体管芯，其具有形成膜片的变薄部分。 隔膜包括基于施加在隔膜上的力而表现出不同阻力的压阻元件。 第一支撑结构接合到半导体管芯的第一表面，具有限定穿过支撑结构的孔，使得隔膜的第一表面通过孔暴露。 类似地将第二支撑结构结合到半导体管芯的相对侧。 与压电电阻元件电连通的电部件布置在由第一和第二支撑结构与半导体管芯之间的结合限定的区域的外部。 可以在半导体管芯和将苛性介质接触管芯的情况下将流体压力传递到管芯的刺激介质之间限定充油体积。
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公开(公告)号：EP1816956A2
公开(公告)日：2007-08-15
申请号：EP05847978.3
申请日：2005-11-23
发明人： PETRUCELLI, Steven
IPC分类号： A61B5/05
CPC分类号： A61B5/053
摘要： An apparatus for determining body impedance comprising: first and second electrodes suitable for being electrically coupled to the body; and a variable frequency relaxation oscillator coupled to the electrodes; wherein, the period of oscillation is indicative of the body impedance.
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29.发明公开Load cell with bossed sensor plate for an electrical weighing scale 有权与驼背传感器磁盘负载细胞用于电Wägeanalagen的称重装置
公开(公告)号：EP0984251A3
公开(公告)日：2001-04-11
申请号：EP99410107.9
申请日：1999-09-02
发明人： Gross, Chris , Germanton, Damon
IPC分类号： G01G3/12
CPC分类号： G01G3/12
摘要： A sensor plate for use in a load cell for use in an electronic scale comprising a planar first surface; a planar second surface opposite the first surface having a depression formed therein defining a flexure area; a load cavity formed in the second surface having a conical receptacle end for receiving a strut; and sensors disposed over the flexure area for generating a signal in response to a load applied to the loading cavity wherein the strut has a first conical projection end coupled to the conical receptacle end of the loading cavity and a second end coupled to a footer member such that the strut mechanically floats therebetween for providing the applied load at a substantially central position at the load cavity.
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公开(公告)号：EP3814737A1
公开(公告)日：2021-05-05
申请号：EP19721824.1
申请日：2019-04-01
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