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公开(公告)号：US5761238A
公开(公告)日：1998-06-02
申请号：US676013
申请日：1996-07-05
申请人： John Anderson Fergus Ross , Irfan Ali , John Erik Hershey , Stephen Michael Hladik , Gary Jude Saulnier , Michael Paul Weir
发明人： John Anderson Fergus Ross , Irfan Ali , John Erik Hershey , Stephen Michael Hladik , Gary Jude Saulnier , Michael Paul Weir
CPC分类号： H04B1/707
摘要： A low complexity and low cost transmitted reference spread spectrum communications system provides several methods of generating a suitable wideband carrier, a method for combining the wideband carrier with a narrowband modulated wideband carrier, and a number of implementations of a simple, inexpensive receiver for the transmitted reference communications system. The transmitter includes a balanced modulator for modulating a wideband spreading signal with a narrowband message signal to generate a wideband carrier. A signal combiner combines the wideband carrier with a narrowband modulated wideband carrier to generate a transmitted reference spread spectrum signal. The receiver includes a selectable time delay device having a plurality of taps for receiving a detected received signal from the transmitter. A tap selector selects a delayed signal from the selectable time delay device. A mixer combines output signals of the selectable time delay device and the tap selector, and a leaky integrator receives the mixer output signal and controls the tap selector. The leaky detector generates the narrowband message signal.
摘要翻译： 低复杂度和低成本传输的参考扩频通信系统提供了几种产生合适的宽带载波的方法，一种用于将宽带载波与窄带调制宽带载波组合的方法，以及用于传输的简单，便宜的接收机的多种实施方式 参考通信系统。 发射机包括用于利用窄带消息信号调制宽带扩频信号以产生宽带载波的平衡调制器。 信号组合器将宽带载波与窄带调制宽带载波组合以产生发射的参考扩展频谱信号。 接收机包括具有多个抽头的可选择的时间延迟装置，用于从发射机接收检测到的接收信号。 分接选择器选择来自可选时延装置的延迟信号。 混频器组合可选时延装置的输出信号和分接选择器，泄漏积分器接收混频器输出信号并控制分接选择器。 泄漏检测器产生窄带消息信号。
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2.发明授权Automatic serialization of an array of wireless nodes based on coupled oscillator model 失效基于耦合振荡器模型的无线节点阵列的自动序列化
公开(公告)号：US6144900A
公开(公告)日：2000-11-07
申请号：US62018
申请日：1998-04-17
CPC分类号： B61L15/0027 , B61L15/0054
摘要： A linking process allows a head-end unit (HEU) of a railroad train to determine the sequence of cars in the train using wireless links between nodes on the cars, and requires no physical connection between the nodes or cars. Each car in the train is equipped with a wireless communication device which models an oscillator i. Each oscillator is phase-variable, the phase .theta..sub.i linearly increasing from 0 to 1 such that, when the i.sup.th oscillator "fires", transmitting a packet, and phase .theta..sub.i then jumps back to zero. When a car receives the transmission of another car, it changes the phase of its oscillator according to a phase-response curve function, setting up a wave pattern of transmission from nodes, from one end of the train to the other end. The wave pattern, along with protocol logic, enables each car to determine the sequence in which cars are arranged in its vicinity. The protocol logic also enables each car to forward or relay this "local map" from all cars to the HEU, allowing the HEU to construct the entire train map which is the sequence of cars in the train. The compiled train map is compared with consist information and the operator is notified of any discrepancy.
摘要翻译： 链接过程允许铁路车站的头端单元（HEU）使用汽车上的节点之间的无线链路来确定列车中的轿厢的顺序，并且不需要节点或汽车之间的物理连接。 列车中的每辆车配备了一个无线通信设备，可以对振荡器进行建模。 每个振荡器是相位可变的，相位θi从0线性增加到1，使得当第i个振荡器“发射”时，发送一个分组，然后相位θi跳回到零。 当汽车接收到另一辆车的发射时，根据相位响应曲线函数改变其振荡器的相位，从节点的一端建立从列车的一端到另一端的传输波形。 波形与协议逻辑一起使每辆车能够确定汽车在其附近排列的顺序。 协议逻辑还使每辆车能够将所有车辆的“本地地图”转发或传递到HEU，从而允许HEU构建列车中的列车序列的整个列车地图。 将编译的火车地图与组合信息进行比较，并向运营商通报任何差异。
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3.发明授权Apparatus and method for motor overload protection using an elapsed-time signal for enabling computation of motor temperature data independently of temporary power interruption 失效使用经过时间信号进行电动机过载保护的装置和方法，用于独立于临时电力中断而能够计算电动机温度数据
公开(公告)号：US5644510A
公开(公告)日：1997-07-01
申请号：US344912
申请日：1994-11-25
申请人： Michael Paul Weir
发明人： Michael Paul Weir
摘要： Apparatus for electrically coupling a motor to a power source and providing overload protection to the motor includes a controller having a programmable module for periodically computing data indicative of motor temperature based upon motor current. The controller supplies an output signal based at least upon the computed motor temperature data. A contactor, responsive to the controller output signal, deenergizes the motor whenever any last-computed motor temperature data reaches or exceeds a threshold temperature. The last-computed motor temperature data is stored in a memory prior to the motor being deenergized. A signal from a timer circuit indicative of elapsed time after the motor is deenergized, together with the stored motor temperature data, enable the programmable module to compute fresh date indicative of motor temperature subsequent to the motor being deenergized. The programmable module, upon initialization with the fresh motor temperature data, can readily resume periodic computation of motor temperature data based upon current now drawn by the motor.
摘要翻译： 用于将电动机电耦合到电源并为电动机提供过载保护的装置包括具有可编程模块的控制器，用于基于电动机电流周期性地计算指示电动机温度的数据。 控制器至少基于计算的电机温度数据提供输出信号。 每当任何最后计算的电机温度数据达到或超过阈值温度时，接触器响应于控制器输出信号，使电机断电。 最后计算的电机温度数据在电机断电之前存储在存储器中。 指示电动机断电之后的经过时间的定时器电路的信号与存储的电动机温度数据一起使得可编程模块能够计算指示电动机断电之后的电动机温度的新鲜日期。 可编程模块在使用新鲜电机温度数据初始化时，可以根据电机现在绘制的电流，轻松恢复电机温度数据的周期性计算。
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公开(公告)号：US5817943A
公开(公告)日：1998-10-06
申请号：US823261
申请日：1997-03-24
CPC分类号： G01L11/008
摘要： A pressure sensor having structure for generating a magnetic force to balance forces on opposing sides of a flexible diaphragm centered within a pressure chamber allows fluid pressure to be introduced into the chamber on one side of the diaphragm. A first magnetic coil is positioned on another side of the diaphragm and a second coil is mounted to the diaphragm. When fluid pressure is introduced into the pressure chamber, the diaphragm deflects, and the magnitude of current required to generate a recentering magnetic force which causes the diaphragm to be recentered constitutes a measure of the fluid pressure. Since the recentering magnetic force is substantially unaffected by temperature, the fluid pressure measurement obtained is substantially independent of temperature.
摘要翻译： 具有用于产生磁力以平衡在压力室内的柔性隔膜的相对侧上的力的结构的压力传感器允许流体压力被引入隔膜一侧的室中。 第一电磁线圈位于隔膜的另一侧，第二线圈安装在隔膜上。 当流体压力被引入压力室时，隔膜偏转，并且产生引起隔膜重新调整的重新产生磁力所需的电流大小构成流体压力的量度。 由于重新调制的磁力基本上不受温度的影响，所获得的流体压力测量基本上与温度无关。
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公开(公告)号：US5751779A
公开(公告)日：1998-05-12
申请号：US495188
申请日：1995-06-27
申请人： Michael Paul Weir
发明人： Michael Paul Weir
CPC分类号： G11C19/285 , G06G7/25 , H04N3/155 , H04N5/335
摘要： A general absolute value circuit for developing a true, symmetric or bipolar, absolute value output signal from an input charge signal, compact enough to be used on a sensor chip incorporated into (or used in combination with) a pixel processor of the type used in imaging and other systems that collect electromagnetic radiation as part of on-chip circuitry, includes a balanced differential amplifier combined with a merged dual shelf transistor structure. The balanced differential amplifier, in response to an input charge signal, drives the merged dual shelf transistor structure which in turn generates the desired true absolute value output signal. Such circuitry may be used in imaging systems to implement focal-plane processing algorithms or may be used for performing a single read true absolute value computation by a pixel processor located on a sensor chip. The merged dual shelf transistor structure enhances performance and speed of the processor in which it is incorporated.
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公开(公告)号：USD381633S
公开(公告)日：1997-07-29
申请号：US44407
申请日：1995-09-25
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公开(公告)号：USD380737S
公开(公告)日：1997-07-08
申请号：US44485
申请日：1995-09-25
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