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1.再颁专利Dormant oscillator ground to neutral protection for ground fault interrupters 失效休眠振荡器接地到中断保护接地故障断路器
公开(公告)号：USRE30678E
公开(公告)日：1981-07-14
申请号：US670851
申请日：1976-03-26
IPC分类号： H02H3/33
CPC分类号： H02H3/331
摘要： Ground to neutral fault protection employing dormant oscillators which are only energized and function on the .[.occurance.]. .Iadd.occurrence .Iaddend.of such type of a ground fault. Combined with known types of two and three wire single phase AC ground fault interrupters to provide circuit interruption regardless of which wire is faulted to ground.
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公开(公告)号：US4543527A
公开(公告)日：1985-09-24
申请号：US367493
申请日：1982-04-12
CPC分类号： G01V3/102
摘要： A new and improved method and apparatus is disclosed for detecting a target location with respect to an inductive tank circuit. A sensing field such as an electromagnetic field is established having an amplitude which changes in value due to the presence of a target in the sensing field. A first energy level is provided to maintain the field at an amplitude. A second energy level is provided to achieve a value for the field within the predetermined amount of time after initiation of the field.
摘要翻译： 公开了一种新的和改进的方法和装置，用于检测相对于感应箱电路的目标位置。 建立了诸如电磁场的感测场，其具有由于感测场中的目标的存在而导致值的变化的幅度。 提供第一能量水平以将场保持在振幅。 提供第二能量水平以在场开始之后的预定时间量内实现该场的值。
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公开(公告)号：US06933693B2
公开(公告)日：2005-08-23
申请号：US10065688
申请日：2002-11-08
CPC分类号： F04B49/065 , F04D15/0209
摘要： The present invention is directed to a centrifugal pump wherein voltage and current data are detected from voltage and current sensors in the motor controller of a pump motor. A power signal is then generated from the voltage and current data and spectrally analyzed to determine the presence of unwanted harmonics which are indicative of mechanical disturbances in the pump. As such, anomalies resulting from mechanical interference may be detected and a warning flag provided without additional transducers and other instruments on the motor or pump.
摘要翻译： 本发明涉及一种离心泵，其中从泵电动机的电动机控制器中的电压和电流传感器检测电压和电流数据。 然后从电压和电流数据产生功率信号并进行光谱分析，以确定是否存在指示泵中的机械干扰的不需要的谐波。 因此，可以检测到由机械干扰引起的异常，并且在马达或泵上没有附加换能器和其他仪器提供警告标志。
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公开(公告)号：US06202016B1
公开(公告)日：2001-03-13
申请号：US09371686
申请日：1999-08-10
IPC分类号： G06F1700
CPC分类号： F16H61/0403 , F16H47/02 , F16H61/16 , F16H61/46 , F16H61/478 , F16H2061/161 , Y10T477/6936 , Y10T477/69373
摘要： A method of shifting a transmission having both a hydrostatic portion, including a variable pump (15), and a hydraulic motor (29), and a mechanical transmission (33) portion, including a shift cylinder (37). The method includes relieving the output torque of the motor (29), shifting the mechanical transmission to neutral, and controlling the. displacement of the pump (15) to synchronize motor output speed with the required input speed to the desired gear ratio of the mechanical transmission (33). Then fluid flow to the shift cylinder (37) occurs to shift to the desired gear ratio. The shifting method includes a series of steps in which the feasibility of the prospective shift is determined, and only when the prospective shift can be completed, without detriment to the operation of the vehicle, will the shift be completed. As a result, the shifting between low gear and high gear can occur without bringing the vehicle to a stop each time.
摘要翻译： 一种包括具有可变泵（15）的液压静力部分和液压马达（29）的变速器的换档方法以及包括变速缸（37）的机械变速器（33）部分。 该方法包括减轻电动机（29）的输出转矩，将机械变速器转移到空档，并控制。 使泵（15）的位移使电动机输出速度与所需的输入速度同步到机械传动装置（33）的所需传动比。 然后发生流到变速缸（37）的流体以转移到期望的传动比。 移动方法包括确定预期班次的可行性的一系列步骤，并且只有当可以完成预期班次而不损害车辆的操作时，才能完成班次。 结果，低速档和高档之间的换档可以在每次不使车辆停止的情况下发生。
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公开(公告)号：US6021373A
公开(公告)日：2000-02-01
申请号：US217267
申请日：1998-12-21
CPC分类号： B60Q9/006
摘要： A back-up proximity sensor for a vehicle is formed with an array of sensor pairs. Each sensor pair includes a lower passive infrared sensor (PIR) having a first field of view and an upper PIR having a second field of view. Each lower PIR and upper PIR is vertically mounted with respect to one another. The lower PIR and upper PIR of each sensor pair are angularly directed such that the respective fields of view intersect, thereby establishing a detection zone in a region behind a vehicle. The sensor pairs are arranged in a substantially adjacent, semicircular configuration to provide a continuous area of coverage behind a vehicle. A detection circuit receives output signals from each sensor pair and generates an output signal indicative of a warm body being detected by both the upper and lower sensors in a selected sensor pair, eliminating false alarms generated by warm bodies outside the region of the desired detection zone.
摘要翻译： 用于车辆的备用接近传感器由传感器对阵列形成。 每个传感器对包括具有第一视野的下部无源红外传感器（PIR）和具有第二视场的上部PIR。 每个下部PIR和上部PIR相对于彼此垂直地安装。 每个传感器对的下部PIR和上部PIR成角度地定向，使得各个视场相交，从而在车辆后面的区域中建立检测区域。 传感器对布置成基本上相邻的半圆形构造，以在车辆后面提供连续的覆盖区域。 检测电路接收来自每个传感器对的输出信号，并且产生一个表示在所选择的传感器对中的上传感器和下传感器都检测到的温暖体的输出信号，消除了在所需检测区域之外的温暖物体产生的假警报 。
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公开(公告)号：US4144410A
公开(公告)日：1979-03-13
申请号：US841219
申请日：1977-10-11
IPC分类号： H04J3/24 , H04L12/423 , H04L12/437 , H04J3/08
CPC分类号： H04J3/245 , H04L12/423 , H04L12/437
摘要： A reconfigurable serial loop multiplex communication system for communication of digital and analog status and control information between field terminal locations or to a central control location via a twisted pair line. Input modules in a first terminal station communicate signals received at their input to output modules having the same byte address in other terminal stations. At the central control locaton, signals from an input module may be readdressed for communication to output modules having a different byte address.
摘要翻译： 一种用于通过双绞线在现场终端位置或中央控制位置之间通信数字和模拟状态和控制信息的可重新配置的串行环路复用通信系统。 第一终端站中的输入模块将在其输入处接收到的信号传送到在其它终端站中具有相同字节地址的输出模块。 在中央控制位置，来自输入模块的信号可以被读取以用于与具有不同字节地址的输出模块进行通信。
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公开(公告)号：US5960694A
公开(公告)日：1999-10-05
申请号：US28218
申请日：1998-02-23
申请人： David W. Thomas , David E. Ewel , Timothy A. Hjelsand , Jerry F. Carlin , Russell P. Schuchmann
发明人： David W. Thomas , David E. Ewel , Timothy A. Hjelsand , Jerry F. Carlin , Russell P. Schuchmann
摘要： A hydrostatic power steering system comprising a fluid motor (19) which receives pressurized fluid from a controller (17) in response to the rotation of a vehicle steering wheel (W). As the motor (19) or the steered wheels reach the stops, control logic (31) receives signals (37,77) representing steered wheel and steering wheel position, respectively, and generates appropriate command signals (33,27) to a pressure reducing/relieving valve (15) and to a proportional electromagnetic valve (23), respectively, closing the valve (15) somewhat, and opening the valve (23). A pressure differential is built between an additional fluid path (21) and the high pressure conduit (15c) between the controller (17) and the fluid motor (19). Pressure is communicated through the valve (23) into the conduit (51c), and back into the fluid meter (43) of the controller, preventing any further rotation thereof in response to an attempt to turn the steering wheel, thus eliminating travel limit slip.
摘要翻译： 一种液压动力转向系统，包括响应于车辆方向盘（W）的旋转而从控制器（17）接收加压流体的流体马达（19）。 当电动机（19）或转向轮到达停止点时，控制逻辑（31）分别接收表示转向轮和方向盘位置的信号（37,77），并产生适当的指令信号（33,27）以减压 分流阀（15）和比例电磁阀（23），分别关闭阀（15）并打开阀（23）。 在控制器（17）和流体马达（19）之间的附加流体路径（21）和高压管道（15c）之间建立压力差。 压力通过阀门（23）传递到导管（51c）中，并返回到控制器的流量计（43）中，以防止任何进一步的旋转，以防止转向方向盘，从而消除行驶限制滑移 。
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公开(公告)号：US4845627A
公开(公告)日：1989-07-04
申请号：US103616
申请日：1987-10-01
CPC分类号： G05B19/052 , G05B19/054 , G05B2219/1101 , G05B2219/1162
摘要： Automated manufacturing equipment (10) such as robot arms for performing a manufacturing operation on a work piece (12) have a relatively stationary host machine (14) with central programmable logic means (16) which receive various parametric inputs (26) and thereby control movement and operation of a machine element (18) suspended at the end of an articulated arm (20) for positioning with respect to the work piece in response to the control signals. A small programmable logic controller (30) disposed for movement with the machine element receives inputs and performs local AND/OR logic on a number of input signals from transducers (28) measuring various parameters associated with movable machine elements. The local I/O device then performs selective AND/OR ladder logic functions on the transducer output signals and outputs a single resultant signal as a function thereof in real-time to the central logic means.
摘要翻译： 用于在工件（12）上执行制造操作的自动化制造设备（10）具有相对固定的主机（14），其具有接收各种参数输入（26）的中央可编程逻辑装置（16），从而控制 悬挂在铰接臂（20）的端部处的机构元件（18）的运动和操作，用于响应于控制信号相对于工件定位。 设置用于与机器元件一起运动的小型可编程逻辑控制器（30）接收输入并对来自换能器（28）的多个输入信号执行本地“与/或”逻辑，测量与可移动机器元件相关联的各种参数。 本地I / O设备然后在换能器输出信号上执行选择性AND / OR梯形图逻辑功能，并将其作为其功能的单个结果信号实时地输出到中央逻辑装置。
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9.发明授权公开(公告)号：US06709240B1
公开(公告)日：2004-03-23
申请号：US10065734
申请日：2002-11-13
IPC分类号： F04B4906
CPC分类号： F04B49/065 , F04D15/0236 , F04D29/669
摘要： The present invention is directed to a centrifugal pump wherein voltage and current data are detected from voltage and current sensors in the pump motor. A power signal is then generated from the voltage and current data and spectrally analyzed to determine the low flow or cavitation in the pump. As such, unwanted operational conditions resulting from improper pump operation may be detected and a warning or maintenance flag provided without additional transducers and other instruments on the motor or pump.
摘要翻译： 本发明涉及一种离心泵，其中从泵电动机中的电压和电流传感器检测电压和电流数据。 然后从电压和电流数据产生功率信号并进行光谱分析，以确定泵中的低流量或气蚀。 因此，可能检测到由于不正确的泵操作而导致的不期望的操作条件，并且在马达或泵上没有附加换能器和其它仪器提供警告或维护标志。
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公开(公告)号：US6044632A
公开(公告)日：2000-04-04
申请号：US18873
申请日：1998-02-05
CPC分类号： G05D1/0242 , G05D1/0272
摘要： A backup proximity sensor for a vehicle includes a first passive infrared sensor (PIR) and a second PIR vertically mounted with respect to one another on a pivotal support member. The first PIR and second PIR are angularly directed such that the respective fields of view converge, establishing a detection zone in a region behind a vehicle. A drive motor and scanning gear box are coupled to the pivotal support member and pivotally drive the first and second PIR in an oscillatory fashion about a predetermined arc. This establishes relative motion between the PIRs and a stationary warm body in the field of view of the two sensors, allowing the stationary body to be detected. A detection circuit receives output signals from the first PIR and second PIR and generates an output signal indicative of a warm body being detected by both the first and second PIRs. This eliminates false alarms generated by warm bodies outside the region of the desired detection zone.
摘要翻译： 用于车辆的备用接近传感器包括在枢转支撑构件上相对于彼此垂直安装的第一被动红外传感器（PIR）和第二PIR。 第一PIR和第二PIR被成角度地定向，使得各个视场会聚，在车辆后面的区域中建立检测区域。 驱动电动机和扫描齿轮箱联接到枢转支撑构件并以围绕预定弧的振荡方式枢转地驱动第一和第二PIR。 这在两个传感器的视场中建立了PIR和静止的暖身之间的相对运动，允许检测静止体。 检测电路接收来自第一PIR和第二PIR的输出信号，并产生指示由第一和第二PIR两者检测到的温暖体的输出信号。 这消除了在所需检测区域之外的温暖物体产生的假警报。
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