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公开(公告)号：US09483674B1
公开(公告)日：2016-11-01
申请号：US14200122
申请日：2014-03-07
CPC分类号： G06K7/10366 , F16B31/028 , G01L5/243
摘要： The present invention provides an RFID-based torque sensor that can be used to quickly monitor off the shelf fasteners including fasteners that are used in expensive satellites or other uses where fastener failure can be very costly. In one embodiment, an antenna, RFID ring and spring comprise a sensor tag that can be interrogated with an interrogation signal produced by an interrogator device. When sufficient torque is applied to the fastener, an RFID circuit is connected, and produces a radio frequency (RF) signal that can be read by the interrogator. In one embodiment, the RFID circuit does not transmit when the spring member is not compressed, thereby indicating insufficient tensioning of the fastener. The present invention offers the ability to remotely, quickly, and inexpensively verify that any number of fasteners are torqued properly upon initial installation. Where applicable, the present invention allows low cost monitoring over the life of the fastener.
摘要翻译： 本发明提供了一种基于RFID的扭矩传感器，其可用于快速监视搁架紧固件，包括紧固件，其用于昂贵的卫星或紧固件故障可能非常昂贵的其它用途。 在一个实施例中，天线，RFID环和弹簧包括传感器标签，该传感器标签可以由询问器装置产生的询问信号询问。 当紧固件施加足够的扭矩时，连接RFID电路，并产生可由询问器读取的射频（RF）信号。 在一个实施例中，当弹簧构件未被压缩时，RFID电路不传输，从而指示紧固件的张力不足。 本发明提供远程，快速和廉价地验证在初始安装时任何数量的紧固件被适当扭转的能力。 在适用的情况下，本发明允许在紧固件的使用寿命内进行低成本监控。
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公开(公告)号：US09410860B2
公开(公告)日：2016-08-09
申请号：US13670820
申请日：2012-11-07
申请人： EATON CORPORATION
发明人： John J. Shea
CPC分类号： G01L5/243 , G01F23/263 , G01L1/142 , G01M13/005
摘要： A washer assembly is for use with a fastener. The washer assembly includes a first conductive portion, a second conductive portion, and an insulating portion disposed between the first conductive portion and the second conductive portion. The first conductive portion, the second conductive portion, and the insulating portion form a variable capacitor having a capacitance based on an amount of force applied thereto by the fastener. A wireless transponder unit includes a control unit electrically connected to the variable capacitor and an antenna electrically connected to the control unit. The control unit is configured to sense the capacitance of the variable capacitor, to generate information representing the capacitance, and to output the information to a wireless reader unit via the antenna.
摘要翻译： 垫圈组件用于紧固件。 垫圈组件包括第一导电部分，第二导电部分和布置在第一导电部分和第二导电部分之间的绝缘部分。 第一导电部分，第二导电部分和绝缘部分形成基于由紧固件施加到其上的力的电容的可变电容器。 无线应答器单元包括电连接到可变电容器的控制单元和电连接到控制单元的天线。 控制单元被配置为感测可变电容器的电容，以产生表示电容的信息，并且经由天线将信息输出到无线读取器单元。
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3.发明授权公开(公告)号：US09016991B2
公开(公告)日：2015-04-28
申请号：US13863473
申请日：2013-04-16
CPC分类号： H02K1/16 , B23P19/067 , F16B31/028 , G01D5/35316 , G01L1/246 , G01L5/243 , H02K11/20
摘要： A generator stator core through-bolt tensioning device that automatically tightens the nut on the through-bolts that hold together and compress laminate plates of the stator core in a high voltage generator. A controller receives a signal from a measuring device, such as a fiber Bragg grating that measures the strain on the bolt, and based on that signal determines whether the nut needs to be tightened. If the controller determines that tightening is necessary, it will cause the tensioning device to automatically tighten the nut while the generator is in service, and use the measuring device to provide feedback of the tensioning of the through-bolt to know when to stop the device from tightening the nut.
摘要翻译： 发电机定子铁心贯通螺栓张紧装置，自动拧紧固定在一起的螺栓上的螺母，并将高压发生器中的定子铁心的压板压缩。 控制器接收来自测量装置的信号，例如测量螺栓上的应变的光纤布拉格光栅，并且基于该信号确定螺母是否需要拧紧。 如果控制器确定需要紧固，则会在发电机使用时使张紧装置自动拧紧螺母，并使用测量装置提供贯穿螺栓张紧的反馈信息，以知道何时停止装置 拧紧螺母。
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4.发明申请公开(公告)号：US20140306574A1
公开(公告)日：2014-10-16
申请号：US13863473
申请日：2013-04-16
CPC分类号： H02K1/16 , B23P19/067 , F16B31/028 , G01D5/35316 , G01L1/246 , G01L5/243 , H02K11/20
摘要： A generator stator core through-bolt tensioning device that automatically tightens the nut on the through-bolts that hold together and compress laminate plates of the stator core in a high voltage generator. A controller receives a signal from a measuring device, such as a fiber Bragg grating that measures the strain on the bolt, and based on that signal determines whether the nut needs to be tightened. If the controller determines that tightening is necessary, it will cause the tensioning device to automatically tighten the nut while the generator is in service, and use the measuring device to provide feedback of the tensioning of the through-bolt to know when to stop the device from tightening the nut.
摘要翻译： 发电机定子铁心贯通螺栓张紧装置，自动拧紧固定在一起的螺栓上的螺母，并将高压发生器中的定子铁心的压板压缩。 控制器接收来自测量装置的信号，例如测量螺栓上的应变的光纤布拉格光栅，并且基于该信号确定螺母是否需要拧紧。 如果控制器确定需要紧固，则会在发电机使用时使张紧装置自动拧紧螺母，并使用测量装置提供贯穿螺栓张紧的反馈信息，以知道何时停止装置 拧紧螺母。
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公开(公告)号：US20140305223A1
公开(公告)日：2014-10-16
申请号：US13863426
申请日：2013-04-16
IPC分类号： G01N3/08
CPC分类号： G01N3/08 , B23P19/067 , F16B31/028 , G01B11/18 , G01D5/35316 , G01L1/246 , G01L5/243 , G02B6/02076 , H02K1/16 , H02K11/20
摘要： A generator stator core that includes a plurality of through-bolts extending through the stator core. Each through-bolt includes a threaded end on which is positioned a conical washer and a through-bolt nut, where the through-bolt nuts are tightened against the washers to compress laminate plates and hold the stator core together. The stator core further includes a through-bolt tension monitoring system including a fiber Bragg grating sensor mounted to one or more of the conical washers and being provided in at least one optical fiber. The monitoring system further includes a monitoring device providing an optical signal to each of the fiber Bragg grating sensors and receiving a reflected signal from the fiber Bragg grating sensors where the reflected signal provides an indication of strain on the washer to provide an indication of how tight the nut is on the through-bolt.
摘要翻译： 发电机定子铁心，其包括延伸穿过定子铁心的多个贯穿螺栓。 每个贯穿螺栓包括螺纹端，锥形垫圈和贯穿螺栓螺母在其上定位，其中贯穿螺栓螺母紧固垫圈以压缩层压板并将定子芯保持在一起。 定子芯还包括贯穿螺栓张力监测系统，该系统包括安装在一个或多个锥形垫圈上并设置在至少一根光纤中的光纤布拉格光栅传感器。 监测系统还包括监测装置，其向光纤布拉格光栅传感器中的每一个提供光信号，并且接收来自光纤布拉格光栅传感器的反射信号，其中反射信号提供垫圈上的应变指示以提供如何紧密的指示 螺母在螺栓上。
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公开(公告)号：US20140129158A1
公开(公告)日：2014-05-08
申请号：US13670820
申请日：2012-11-07
申请人： EATON CORPORATION
发明人： JOHN J. SHEA
CPC分类号： G01L5/243 , G01F23/263 , G01L1/142 , G01M13/005
摘要： A washer assembly is for use with a fastener. The washer assembly includes a first conductive portion, a second conductive portion, and an insulating portion disposed between the first conductive portion and the second conductive portion. The first conductive portion, the second conductive portion, and the insulating portion form a variable capacitor having a capacitance based on an amount of force applied thereto by the fastener. A wireless transponder unit includes a control unit electrically connected to the variable capacitor and an antenna electrically connected to the control unit. The control unit is configured to sense the capacitance of the variable capacitor, to generate information representing the capacitance, and to output the information to a wireless reader unit via the antenna.
摘要翻译： 垫圈组件用于紧固件。 垫圈组件包括第一导电部分，第二导电部分和布置在第一导电部分和第二导电部分之间的绝缘部分。 第一导电部分，第二导电部分和绝缘部分形成基于由紧固件施加到其上的力的电容的可变电容器。 无线应答器单元包括电连接到可变电容器的控制单元和电连接到控制单元的天线。 控制单元被配置为感测可变电容器的电容，以产生表示电容的信息，并且经由天线将信息输出到无线读取器单元。
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公开(公告)号：US08391561B2
公开(公告)日：2013-03-05
申请号：US12667313
申请日：2008-07-03
申请人： Olle Takman , Jonas Nilsagård
发明人： Olle Takman , Jonas Nilsagård
IPC分类号： G06K9/00
CPC分类号： G01B11/165 , F16B31/02 , G01L3/12 , G01L5/243 , Y10T29/49764
摘要： The present invention relates to a tension monitoring system comprising: —at least one camera for acquiring at least one image of at least one pattern located on an object of interest, wherein the pattern comprises a plurality of points and where each point is arranged on the object in such as way as to follow the movement of the object; —a computational device; wherein the computational device is arranged to analyze the acquired image for detecting the position of each pattern point using an image analysis algorithm arranged to determine the geometrical center of a point using a contrast detection method, determining the distance between at least two pattern portions, and calculating the tension induced in the object using a reference value of distance between the two pattern portions when the object is mechanically relaxed.
摘要翻译： 张力监测系统技术领域本发明涉及一种张力监测系统，包括： - 至少一个相机，用于获取位于感兴趣对象上的至少一个图案的至少一个图像，其中所述图案包括多个点，并且其中每个点布置在 对象以如下方式跟随物体的移动; - 计算设备 其中所述计算装置被布置成使用图像分析算法来分析所获取的图像以检测每个图案点的位置，所述图像分析算法被布置为使用对比度检测方法确定点的几何中心，确定至少两个图案部分之间的距离，以及 当物体被机械地松弛时，使用两个图案部分之间的距离的参考值来计算在物体中引起的张力。
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公开(公告)号：US20110123288A1
公开(公告)日：2011-05-26
申请号：US12780145
申请日：2010-05-14
申请人： Ivan Wayne Wallace
发明人： Ivan Wayne Wallace
IPC分类号： F16B31/02
CPC分类号： G01L5/243 , F16B31/028
摘要： A direct tension indicating washer includes a first surface having a plurality bumps formed thereon; a second surface having a plurality of discrete indentations, each indentation formed opposite one of said protuberances; an indicating material positioned in at least one indentation, the indicating material including an indicating material having a first color and an indicating material having a second color; and a channel leading from the at least one indentation to an outer edge of said direct tension indicating washer.
摘要翻译： 直接张力指示垫圈包括其上形成有多个凸块的第一表面; 具有多个离散凹陷的第二表面，与所述突起中的一个形成的每个凹口; 位于至少一个压痕中的指示材料，所述指示材料包括具有第一颜色的指示材料和具有第二颜色的指示材料; 以及从所述至少一个凹陷引导到所述直接张力指示垫圈的外边缘的通道。
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公开(公告)号：US07698949B2
公开(公告)日：2010-04-20
申请号：US11222720
申请日：2005-09-09
CPC分类号： G01L5/243 , G01L5/246 , G01N29/043 , G01N29/223 , G01N29/2475 , G01N2291/02827 , G01N2291/0422 , G01N2291/044 , G01N2291/101
摘要： Apparatus, systems, and methods for inspecting and monitoring bolted joints of metallic and composite structures for defects such as delamination and fatigue cracking are provided that incorporate ultrasonic transducers with load bearing washers. These active washers may be used for inspecting and monitoring a structure beneath such load bearing fasteners as bolts and nuts. Active washers may be used for continuous, periodic, and controlled inspections of bolted joints. Ultrasonic transducers may be permanently applied to a surface of a washer or recessed in a cavity on a surface of the washer. Inspection signals may be transmitted from ultrasonic transducers into a structure and reflected in pulse-echo application or received by another active washer on the opposing side of the structure in a through-transmission application.
摘要翻译： 提供用于检查和监测金属和复合结构的螺栓接头的装置，系统和方法，用于诸如分层和疲劳裂纹的缺陷，其包括具有承载垫圈的超声波换能器。 这些主动式垫圈可以用于检查和监测在诸如螺栓和螺母的承载紧固件之下的结构。 主动式垫圈可用于螺栓接头的连续，周期和受控检查。 超声波换能器可以永久地施加到垫圈的表面或凹进在垫圈的表面上的空腔中。 检查信号可以从超声波换能器传输到结构中并在脉冲回波应用中反射或由通过传输应用的结构的相对侧上的另一个有源垫圈接收。
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公开(公告)号：US20070025823A1
公开(公告)日：2007-02-01
申请号：US11160618
申请日：2005-06-30
申请人： Ron Hockersmith
发明人： Ron Hockersmith
IPC分类号： F16B31/02
CPC分类号： G01L5/243 , A61B6/102 , A61B6/56 , A61B2090/064 , A61B2560/0271 , G03B42/02
摘要： A computed tomography assembly is provided comprising at least one clamped imaging component and a clamping fastener having a clamping head attached thereto. A load-sensing washer is positioned between the clamping head and the at least one clamped imaging component and includes a pressure sensor element in communication with a wireless transmitter transmitting a fastener load value. A wireless receiver is adapted to remotely receive the fastener load value and a processor in communication with the wireless receiver includes logic adapted to monitor the fastener load value in real time.
摘要翻译： 提供了一种计算机断层摄影组件，其包括至少一个夹持的成像组件和具有附接到其上的夹紧头的夹紧紧固件。 负载感测垫圈位于夹紧头和至少一个夹紧成像部件之间，并且包括与传送紧固件负载值的无线发射器通信的压力传感器元件。 无线接收器适于远程接收紧固件负载值，并且与无线接收器通信的处理器包括适于实时监测紧固件负载值的逻辑。
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