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公开(公告)号：US20100024545A1
公开(公告)日：2010-02-04
申请号：US12481245
申请日：2009-06-09
申请人： JEFFREY P. RUDD
发明人： JEFFREY P. RUDD
IPC分类号： G01F23/68
CPC分类号： G01F23/70
摘要： An inductive liquid-level sensor employs a central shaft supporting multiple independent electrical loops that may be interrogated to detect the proximity of the conductive element in the float rising and falling with changes in liquid height outside of the shaft.
摘要翻译： 感应式液位传感器采用支撑多个独立电气回路的中心轴，可以通过询问来检测浮子内的导电元件与轴外部液体高度的变化的上升和下降的接近程度。
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公开(公告)号：US5995347A
公开(公告)日：1999-11-30
申请号：US37210
申请日：1998-03-10
申请人： Jeffrey P. Rudd , Byron T. Yarboro
发明人： Jeffrey P. Rudd , Byron T. Yarboro
CPC分类号： H02H7/0822 , H02H7/0852
摘要： A multi-function protection system (8) for protecting electrical equipment such as a screw compressor motor is shown having a housing (10, 20) mounting current sensing toroids (CT1, CT2, CT3) and associated circuitry as well as associated circuitry for temperature sensing PTC resistors (S1, S2, S3) adapted to be placed in heat conductive relation with respective windings of the motor. The circuitry is connected to an analog-to-digital converter or ADC (U6) which provides a binary coded input to a micro-controller (U5). The micro-controller performs protection sub-routines to control an output switch (Q4) which in turn controls the state of energization of a relay (K1) coupled to the screw compressor motor. The circuitry includes a current unbalance section (30a, 30b), an over temperature section (32), a low voltage cut-out circuit (33), a current transducer section (35), a signal conditioning circuit (36a, 36b, 36c), a micro-controller section (40) incorporating a shorted sensor protection system, current overload calibration section (41) and fault diagnostic section (42). A fault bank routine filters transient voltages resulting from industrial or environmental electromagnetic interference (EMI) for current overload, current imbalance and over temperature transient voltages to distinguish real fault conditions from EMI transients.
摘要翻译： 示出了用于保护诸如螺杆式压缩机马达的电气设备的多功能保护系统（8），其具有安装电流检测环形线圈（CT1，CT2，CT3）和相关电路的壳体（10,20）以及相关联的温度电路 感测PTC电阻器（S1，S2，S3），其适于与电动机的各个绕组处于导热关系。 电路连接到模数转换器或ADC（U6），它为微控制器（U5）提供二进制编码输入。 微控制器执行保护子程序来控制输出开关（Q4），输出开关又控制与螺杆式压缩机马达耦合的继电器（K1）的通电状态。 电路包括电流不平衡部分（30a，30b），过温部分（32），低压切断电路（33），电流传感器部分（35），信号调理电路（36a，36b，36c ），包含短路传感器保护系统的微控制器部分（40），电流过载校准部分（41）和故障诊断部分（42）。 故障库例程可以过滤由工业或环境电磁干扰（EMI）引起的瞬态电压，用于电流过载，电流不平衡和过温瞬态电压，以将真实故障条件与EMI瞬变区分开来。
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公开(公告)号：US08549911B2
公开(公告)日：2013-10-08
申请号：US12994857
申请日：2009-05-27
IPC分类号： G01F23/74
CPC分类号： G01F23/74
摘要： A liquid level sensor employs a set of axially displaced magnetic sensing switches and a magnet on a float that may rise and fall on liquid level to activate and deactivate the switches. The switches and magnet are configured so that movement of the magnetic float activates a new switch before deactivation of an adjacent previously activated switch. An electronic circuit provides a signal based on the uppermost activated switch to provide a signal that is monotonic with liquid level. The design may be readily implemented using reed switches and a resistive ladder.
摘要翻译： 液位传感器使用一组轴向移位的磁感应开关和浮子上的磁体，其可以在液面上升和下降以启动和停用开关。 开关和磁体被配置为使得磁浮子的移动在相邻的先前激活的开关停用之前激活新的开关。 电子电路提供基于最上面激活的开关的信号，以提供与液位单调的信号。 可以使用簧片开关和电阻梯来容易地实现该设计。
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公开(公告)号：US20100101921A1
公开(公告)日：2010-04-29
申请号：US12527367
申请日：2008-04-18
申请人： David M. Howie , Jeffrey P. Rudd
发明人： David M. Howie , Jeffrey P. Rudd
IPC分类号： H01H9/00
CPC分类号： B60Q1/1469 , B60Q1/343 , B60R16/005 , B60S1/08
摘要： A combined mechanical and switch activation stalk provides a vehicle driver independent control of a vehicle system that heretofore has not been separately controllable, such as the turn signal system and the wiper and washer system. The lever may be moved to make a first input to the vehicle system and a touch pad incorporated into the body of the lever may be touched to signal a second input that either overrides an input made with movement of the activation stalk or to activate/deactivate the vehicle system in a manner not available with movement of the activation stalk.
摘要翻译： 组合的机械和开关激活杆提供车辆驾驶员对迄今为止不能单独控制的车辆系统的独立控制，例如转向信号系统和刮水器和洗涤器系统。 可以移动杠杆以对车辆系统进行第一输入，并且可以触摸并入到杠杆的主体中的触摸板以通知第二输入，该第二输入覆盖由激活杆的移动而进行的输入或者激活/去激活 车辆系统以不能与活动杆移动的方式进行。
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公开(公告)号：US08203466B2
公开(公告)日：2012-06-19
申请号：US12527587
申请日：2008-04-18
IPC分类号： H03M11/00
CPC分类号： H03K17/962 , H03K2017/9615 , H03K2217/960705 , H03K2217/960755 , H03K2217/960775
摘要： A capacitive touch switch suitable for use in areas with high environmental and electrical contamination employs a complex excitation signal that is demodulated to better distinguish it from environmental effects. Improved discrimination allows these sensed signals to be offset against a signal developed by a reference electrode to allow the system to operate robustly with contamination on the electrodes that would otherwise trigger or obscure pulses.
摘要翻译： 适用于具有高环境和电气污染的区域的电容式触摸开关采用解调的复合激励信号，以更好地区别于环境影响。 改进的鉴别允许这些感测信号抵消由参考电极产生的信号，以允许系统鲁棒地操作电极上的污染物，否则将会触发或模糊脉冲。
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公开(公告)号：US08082785B2
公开(公告)日：2011-12-27
申请号：US12481245
申请日：2009-06-09
申请人： Jeffrey P. Rudd
发明人： Jeffrey P. Rudd
CPC分类号： G01F23/70
摘要： An inductive liquid-level sensor employs a central shaft supporting multiple independent electrical loops that may be interrogated to detect the proximity of the conductive element in the float rising and falling with changes in liquid height outside of the shaft.
摘要翻译： 感应式液位传感器采用支撑多个独立电气回路的中心轴，可以通过询问来检测浮子内的导电元件与轴外部液体高度的变化的上升和下降的接近程度。
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公开(公告)号：US5585990A
公开(公告)日：1996-12-17
申请号：US444446
申请日：1995-05-19
CPC分类号： H02H7/09 , H02H1/06 , H02H7/0852 , H02H11/007
摘要： An electronic motor protection system is shown having a power supply usable with multivoltage supplies and providing protection from over-temperature conditions caused by various fault conditions. The system also has optional features of a time delay for re-energization and for low voltage protection. The system is mounted on a circuit board and encased in potting material which also locks the two housing parts together. A miswiring feature is also provided to prevent connecting line voltage to the control circuit or sensor terminals.
摘要翻译： 电子电动机保护系统被示出具有可用于多电压供应的电源并且提供由各种故障条件引起的过温条件的保护。 该系统还具有延时重新通电和低电压保护的可选功能。 该系统安装在电路板上并封装在灌封材料中，该灌封材料也将两个壳体部件锁定在一起。 还提供了误接线功能，以防止将线路电压连接到控制电路或传感器端子。
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公开(公告)号：US20110138907A1
公开(公告)日：2011-06-16
申请号：US12994857
申请日：2009-05-27
IPC分类号： G01F23/30
CPC分类号： G01F23/74
摘要： A liquid level sensor employs a set of axially displaced magnetic sensing switches and a magnet on a float that may rise and fall on liquid level to activate and deactivate the switches. The switches and magnet are configured so that movement of the magnetic float activates a new switch before deactivation of an adjacent previously activated switch. An electronic circuit provides a signal based on the uppermost activated switch to provide a signal that is monotonic with liquid level. The design may be readily implemented using reed switches and a resistive ladder.
摘要翻译： 液位传感器使用一组轴向移位的磁感应开关和浮子上的磁体，其可以在液面上升和下降以启动和停用开关。 开关和磁体被配置为使得磁浮子的移动在相邻的先前激活的开关停用之前激活新的开关。 电子电路提供基于最上面激活的开关的信号，以提供与液位单调的信号。 可以使用簧片开关和电阻梯来容易地实现该设计。
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公开(公告)号：US20100109917A1
公开(公告)日：2010-05-06
申请号：US12527587
申请日：2008-04-18
IPC分类号： H03M11/00 , H03K17/975
CPC分类号： H03K17/962 , H03K2017/9615 , H03K2217/960705 , H03K2217/960755 , H03K2217/960775
摘要： A capacitive touch switch suitable for use in areas with high environmental and electrical contamination employs a complex excitation signal that is demodulated to better distinguish it from environmental effects. Improved discrimination allows these sensed signals to be offset against a signal developed by a reference electrode to allow the system to operate robustly with contamination on the electrodes that would otherwise trigger or obscure pulses.
摘要翻译： 适用于具有高环境和电气污染的区域的电容式触摸开关采用解调的复合激励信号，以更好地区别于环境影响。 改进的鉴别允许这些感测信号抵消由参考电极产生的信号，以允许系统鲁棒地操作电极上的污染物，否则将会触发或模糊脉冲。
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