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公开(公告)号：US4075559A
公开(公告)日：1978-02-21
申请号：US598611
申请日：1975-07-24
摘要： An input signal supplied to a signal measuring circuit is either amplified or attenuated as necessary to establish the magnitude of the input signal within the defined dynamic range of the measuring circuit and the output signal developed by the measuring circuit is subsequently readjusted through amplification or attenuation to develop an output signal which corresponds to the magnitude of the initial input signal.
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公开(公告)号：US4017766A
公开(公告)日：1977-04-12
申请号：US601898
申请日：1975-08-04
CPC分类号： G06G7/28 , H02H3/0935
摘要： The disclosure relates to a time-overcurrent relay utilizing successive linear time-current segments which approximate a non-linear, inverse time-current curve the linear segments are determined by subtracting a series of ramp like voltages of increasing magnitudes from a series of bias voltages, each of which is of substantially constant magnitude and which bias voltage magnitudes decrease in sequence by the peak magnitude of the preceding ramp voltage.
摘要翻译： 本公开涉及一种利用连续线性时间 - 电流段的时间过电流继电器，其接近非线性的反时限电流曲线，通过从一系列偏置电压中减去一系列增量幅度的斜坡电压来确定线性段 ，其中的每一个具有基本上恒定的幅度，并且偏置电压幅度依次减小前一个斜坡电压的峰值幅度。
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3.发明授权Method of mapping refrigerated containers in a power line carrier based monitoring system 失效在基于电力线载波的监控系统中映射冷藏集装箱的方法
公开(公告)号：US4896277A
公开(公告)日：1990-01-23
申请号：US189896
申请日：1988-05-03
IPC分类号： H02J13/00 , H04B3/54 , H04L12/403
CPC分类号： H04L12/403 , H02J13/0031 , H04B3/542 , H04B2203/5408 , H04B2203/5441 , H04B2203/5458 , H04B2203/5483
摘要： A method of mapping addresses of a plurality of refrigerated containers having remote monitoring units (RMUs) connected to a power line carrier based monitoring system which includes a master monitoring unit (MMU). The method adapts to the size of the expected number of containers to be mapped by any mapping command, to reduce the overall time to map either a large or small number of containers. The method includes the MMU selecting a modulo having a magnitude determined by the number of containers expected to be mapped, and the RMUs generating a random number within the range responsive to the modulo. The RMUs apply response messages to the power line, which include the addresses of the associated containers, at a time responsive to the magnitude of the random number.
摘要翻译： 一种映射具有连接到包括主监视单元（MMU）的基于电力线载波的监视系统的远程监视单元（RMU）的多个冷藏集装箱的地址的方法。 该方法适应于通过任何映射命令映射的预期容器数量的大小，以减少映射大量或少量容器的总体时间。 该方法包括MMU选择具有由预期映射的容器数确定的幅度的模，并且RMU在响应于该模的范围内生成随机数。 响应于随机数的大小，RMU将响应消息应用于电力线，其中包括相关联的容器的地址。
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公开(公告)号：US4057754A
公开(公告)日：1977-11-08
申请号：US684059
申请日：1976-05-06
摘要： A transducer is utilized to convert the eccentricity of a turbine shaft into a sinusoidal electrical voltage signal having a given frequency, amplitude and a DC bias. This electrical signal is provided to a circuit which periodically measures the maximum and minimum peaks of the sinusoidal signal. The frequency at which the latter measurements occur is related to the frequency of the sinusoidal input signal. The maximum and minimum levels of magnitude are stored periodically as DC levels and subtracted from each other to determine the absolute value of eccentricity. In addition the stored minimum value is compared with the sinusoidal signal to reduce the DC bias of the sinusoidal signal to a point where the negative peaks thereof are at zero.
摘要翻译： 传感器用于将涡轮轴的偏心度转换成具有给定频率，振幅和DC偏压的正弦电压信号。 该电信号被提供给周期性地测量正弦信号的最大和最小峰值的电路。 后一次测量发生的频率与正弦输入信号的频率有关。 周期性地将最大和最小电平值作为DC电平存储并相互减去以确定偏心率的绝对值。 此外，将存储的最小值与正弦信号进行比较，以将正弦信号的DC偏压减小到其负峰值为零的点。
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公开(公告)号：US3995719A
公开(公告)日：1976-12-07
申请号：US578304
申请日：1975-05-16
摘要： An elevator system including an elevator car mounted for movement in a building to serve the floors therein, and a car position indicator for indicating the position of the elevator car relative to the floors. A universal binary advanced car position signal is the input for a read-only memory programmed to output signals which drive the display portion of the position indicator to provide the notations desired for the specific building configuration. The power supply for the car position indicator intermittently activates the read-only memory to reduce the average power consumption thereof.
摘要翻译： 一种电梯系统，包括安装成用于在建筑物中运动以服务于其中的地板的电梯轿厢;以及轿厢位置指示器，用于指示电梯轿厢相对于楼层的位置。 通用二进制先进车位置信号是被编程为输出信号的只读存储器的输入，驱动位置指示器的显示部分以提供特定建筑物配置所需的符号。 汽车位置指示器的电源间歇地激活只读存储器以降低其平均功耗。
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公开(公告)号：US5317309A
公开(公告)日：1994-05-31
申请号：US948345
申请日：1992-09-21
申请人： Leonard C. Vercellotti , Alan F. Mandel , Richard J. Ravas , John C. Schlotterer , James A. Neuner
发明人： Leonard C. Vercellotti , Alan F. Mandel , Richard J. Ravas , John C. Schlotterer , James A. Neuner
IPC分类号： G01S13/74 , G01S5/04 , G01S13/82 , G06K7/08 , G06K17/00 , G06K19/07 , G06K19/073 , G07C9/00 , G08B3/10 , H04B1/59 , H04Q7/34 , G08C19/00 , G01S1/00
CPC分类号： G06K19/0712 , G01S13/825 , G01S5/04 , G06K19/0707 , G06K19/0723 , G06K19/07354 , G07C9/00111 , G08B3/1083
摘要： A dual mode electronic identification system using a tag which has a RF receiver and transmitter contained therein. In the first mode the tag responds to an interrogation signal by transmitting identification data to the interrogator. In the second mode the tag periodically transmits an identification beacon signal to a directional sensing antenna which uses the signal to compute the position of the tag. The power supply for the tag operates from an internal battery or from power received from a portal signal via a tag receiving antenna. The battery can be automatically turned off when the tag is in the portal area and the unit can be shifted into the battery operated beacon mode when the tag is removed from the portal area.
摘要翻译： 一种双模电子识别系统，其使用具有RF接收器和发送器的标签。 在第一模式中，标签通过将识别数据发送到询问器来响应询问信号。 在第二模式中，标签周期性地将识别信标信号发送到使用信号计算标签位置的方向感测天线。 标签的电源通过标签接收天线从内部电池或从门槛信号接收的电力工作。 当标签在门禁区域中时，电池可以自动关闭，并且当标签从门禁区域中移除时，电池可以移动到电池供电信标模式。
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公开(公告)号：US4912522A
公开(公告)日：1990-03-27
申请号：US232982
申请日：1988-08-17
IPC分类号： H04B10/00
CPC分类号： H04B10/807
摘要： A light driven remote system and power supply therefor that includes a laser diode that provides pulses of light to a fiber optic cable. The pulses of light are detected by a remote photodiode that is connected in parallel with a step-up transformer. The output of the step-up transformer is filtered to provide power for a remote system. Data transmission from the remote system is synchronized with transmission of light to the photodiode.
摘要翻译： 一种光驱遥控系统及其电源，包括向光纤电缆提供脉冲光的激光二极管。 光脉冲由与升压变压器并联连接的远程光电二极管检测。 过滤升压变压器的输出，为远程系统提供电源。 来自远程系统的数据传输与光传输到光电二极管同步。
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8.发明授权Power line carrier communication system for monitoring refrigerated containers 失效用于监控冷藏集装箱的电力线载波通信系统
公开(公告)号：US4885564A
公开(公告)日：1989-12-05
申请号：US189566
申请日：1988-05-03
申请人： Leonard C. Vercellotti , Arthur A. Anderson , David A. Christiansen , Dannis R. Johnson , Laurence R. Brickner , Robert G. Colclaser III , John G. Leddy
发明人： Leonard C. Vercellotti , Arthur A. Anderson , David A. Christiansen , Dannis R. Johnson , Laurence R. Brickner , Robert G. Colclaser III , John G. Leddy
CPC分类号： H04L29/06 , F25D29/008 , G05D23/1905
摘要： A power line carrier communication system for monitoring refrigerated containers which includes a master monitoring unit and a first power line interface which interchange messages in a first format. The first power line interface translates the first format to a second format suitable for power line environment, and messages in the second format are applied to a power line. Remote monitoring units receive the messages from the power line, and they return messages to the power line containing status data relative to refrigerated containers. The second format includes a message starting preamble having a duration and logic level which is not duplicated by normal operation of the apparatus, enhancing the probability of proper message synchronization and reception over noisy power line environments.
摘要翻译： 一种用于监视冷藏集装箱的电力线载体通信系统，其包括主监视单元和以第一格式交换消息的第一电力线接口。 第一电力线接口将第一格式转换为适合于电力线环境的第二格式，并且将第二格式的消息应用于电力线。 远程监控单元从电源线接收消息，并将消息返回给包含与冷藏集装箱相关的状态数据的电力线。 第二格式包括具有持续时间和逻辑电平的消息开始的前导码，该持续时间和逻辑电平不会由于装置的正常操作而被复制，从而增强了在噪声电力线路环境中适当的消息同步和接收的概率。
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9.发明授权Programmed overcurrent protection control apparatus and method of operating the same 失效编程过电流保护控制装置及其操作方法
公开(公告)号：US4722059A
公开(公告)日：1988-01-26
申请号：US725195
申请日：1985-04-19
申请人： Joseph C. Engel , Leonard C. Vercellotti , Richard A. Johnson , Seymour Salowe , William R. Verbanets, Jr.
发明人： Joseph C. Engel , Leonard C. Vercellotti , Richard A. Johnson , Seymour Salowe , William R. Verbanets, Jr.
CPC分类号： H02H3/0935
摘要： Programmed overcurrent protection control apparatus with selectable time-overcurrent operation to govern the interruption of current through at least one power line associated with either a ground phase or a power phase of a power system network is disclosed. A programmed processor is included to derive an overcurrent time-to-trip in accordance with sampled measurement current values of the power line and selected derivation constants stored in a memory look-up table. The derivation constants are selected from the look-up table based on derivation parameters which may be set and read by the programmed processor from time to time. The programmed processor utilizes the selected derivation constants to derive the time-to-trip over a number of predetermined time intervals during which the overcurrent condition persists. An alternate overcurrent time-to-trip relationship utilizing different derivation parameters selected from the look-up table may be utilized for the conditions in which overcurrent exists in an initial predetermined range. In some situations, both of the derivation relationships may be used concurrently to derive the overcurrent time-to-trip.
摘要翻译： 公开了一种编程过电流保护控制装置，其具有可选择的时间过流操作，以控制通过与电力系统网络的接地相或电力相关联的至少一个电力线的电流中断。 包括编程处理器以根据存储在存储器查找表中的电力线的采样测量电流值和选择的导出常数导出过电流时间跳闸。 基于可由编程的处理器不时地设置和读取的导出参数，从查找表中选择推导常数。 编程的处理器利用所选择的导出常数来导致在过电流状态持续的多个预定时间间隔内的跳闸时间。 使用从查找表中选择的不同推导参数的替代的过电流时间到跳闸关系可用于在初始预定范围内存在过电流的条件。 在某些情况下，两个推导关系可以同时使用以导出过电流跳闸。
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公开(公告)号：US5774000A
公开(公告)日：1998-06-30
申请号：US745981
申请日：1996-11-08
IPC分类号： H03K17/0814 , H03K17/10 , H03K17/12 , H03B1/00
CPC分类号： H03K17/08142 , H03K17/102 , H03K17/122
摘要： A semiconductor switch including a plurality of die assembled hybrid circuit packages. Each package includes a relatively large number of parallely connected semiconductor switch devices, more particularly metal oxide semiconductor field effect transistors (MOSFETs). An active snubber circuit is connected to the MOSFETs in order to remove the requirement for current sharing during circuit interruption where the MOSFETs turn-off. Each MOSFET package furthermore includes metallic arc barriers between MOSFETs to prevent an arc from propagating from one failed MOSFET to neighboring MOSFETs. Also all of the MOSFETs are turned on momentarily to extinguish arcs whenever the semiconductor switch is in an open or non-conducting condition and a current flow is detected. Clamping of the gate electrode drive bus of the MOSFETs is additionally provided to ensure fusing of gate bonding wires coupling the gate electrodes of the respective MOSFETs to the gate drive bus.
摘要翻译： 一种半导体开关，包括多个管芯组装的混合电路封装。 每个封装包括相对大量的平行连接的半导体开关器件，更具体地，金属氧化物半导体场效应晶体管（MOSFET）。 有源缓冲电路连接到MOSFET，以消除MOSFET关断的电路中断期间电流共享的要求。 每个MOSFET封装还包括MOSFET之间的金属电弧屏障，以防止电弧从一个故障MOSFET传播到相邻的MOSFET。 此外，只要半导体开关处于断开或非导通状态并且检测到电流，所有MOSFET都会瞬间导通，以熄灭电弧。 另外提供了MOSFET的栅电极驱动总线的钳位，以确保将各个MOSFET的栅电极耦合到栅极驱动总线的栅极接合线的熔合。
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