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公开(公告)号：US5835027A
公开(公告)日：1998-11-10
申请号：US745120
申请日：1996-11-07
摘要： The naturally occurring residual charge of a dielectric is utilized to establish a static electric field adapted to be disturbed by a conductive member upon occurrence of an event, such as, for example, the passage of a vehicle tire over the conductive member. Disturbance of the electric field results in the generation of a pulse that can be monitored. A traffic sensor for monitoring the number and speed of vehicles traveling in multiple lanes of a roadway employing dielectrics with naturally occurring residual charge includes a housing containing a cavity, a conductive mounting bar adapted to fit within the cavity, at least two sensing elements including the dielectrics mounted on the mounting bar so as to generate a signal when impacted by a vehicle tire. A transmission cable connects with the sensing elements for transmitting the electric signals generated by the sensing elements to analyzing equipment for evaluating, displaying, and recording the data generated by the sensing elements. Signals are transmitted through every other wire of the transmission cable to minimize cross-talk between the signal carrying wires.
摘要翻译： 电介质的天然存在的剩余电荷被用于建立一个静电场，该静电场适于在发生事件时被导电构件干扰，例如车辆轮胎通过导电构件。 电场的干扰导致可以监测的脉冲的产生。 用于监测使用具有自然产生的剩余电荷的电介质在车道的多个车道中行驶的车辆的数量和速度的交通传感器包括：包含空腔的壳体，适于装配在腔内的导电安装杆，至少两个感测元件，包括 安装在安装杆上的电介质，以便在被车辆轮胎撞击时产生信号。 传输电缆与感测元件连接，用于将由感测元件产生的电信号传输到用于评估，显示和记录由感测元件产生的数据的分析设备。 信号通过传输电缆的每隔一根线传输，以最小化信号传输线之间的串扰。
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公开(公告)号：US4365214A
公开(公告)日：1982-12-21
申请号：US190464
申请日：1980-09-24
申请人： Robert W. Shillady
发明人： Robert W. Shillady
摘要： A semiconductor mounting and matching assembly capable of performing over a frequency range to 20 GHz and higher comprising a coaxial transmission line having a first portion with a first end for receiving radio-frequency signals and providing an input impedance and a second portion with a second signal output end providing a termination characteristic impedance. A semiconductor diode which is hermetically sealed within and removable with the second portion is mounted at the second end and has a load resistance terminating the transmission line. The transmission line has a plurality of sections for providing elements of a network which transforms the input impedance and matches the termination characteristic impedance of the second end of the transmission line to the load resistance of the semiconductor device. The elements of the network are provided by the configurations and discontinuities of the sections of the transmission line and the capacitive and inductive properties provided by the semiconductor device, whereby the network incorporates therein the parasitic reaction elements of the semiconductor device so that said assembly transmits radio-frequency signals from its input end to the semiconductor device at its output end with low reflection and attenuation over a wide-band of frequencies.
摘要翻译： 一种能够在20GHz及更高频率范围内执行的半导体安装和匹配组件，包括具有第一部分的同轴传输线，第一部分具有用于接收射频信号的第一端并提供输入阻抗，第二部分具有第二信号 输出端提供端接特性阻抗。 密封在第二部分内并可移除的半导体二极管安装在第二端，并具有终止传输线的负载电阻。 传输线具有用于提供变换输入阻抗并将传输线的第二端的终端特性阻抗与半导体器件的负载电阻相匹配的网络元件的多个部分。 网络的元件由传输线的部分的配置和不连续性以及由半导体器件提供的电容和电感特性提供，由此网络中包含半导体器件的寄生反应元件，使得所述组件传输无线电 在其输出端从其输入端到半导体器件的频率信号在宽带频带上具有低反射和衰减。
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公开(公告)号：US6130627A
公开(公告)日：2000-10-10
申请号：US144102
申请日：1998-08-31
摘要： A residual charge traffic sensor for monitoring the number and speed of vehicles traveling in multiple lanes of a roadway includes a housing containing a cavity, a conductive mounting bar adapted to fit within the cavity, at least two sensing elements mounted on the mounting bar which generate a signal when impacted by a vehicle tire, a transmission cable connected with the sensing elements for transmitting the electric signals generated by the sensing elements, and analyzing equipment for evaluating, displaying, and recording the data generated by the sensing elements. Signals are transmitted through every other wire of the transmission cable to minimize cross-talk between the signal carrying wires.
摘要翻译： 用于监测在道路的多个车道中行驶的车辆的数量和速度的残余充电交通传感器包括容纳空腔的壳体，适于装配在空腔内的导电安装杆，安装在安装杆上的至少两个感测元件，其产生 当由车辆轮胎撞击时的信号，与感测元件连接的传输电缆，用于传输由感测元件产生的电信号，以及分析用于评估，显示和记录由感测元件产生的数据的设备。 信号通过传输电缆的每隔一根线传输，以最小化信号传输线之间的串扰。
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公开(公告)号：US4912471A
公开(公告)日：1990-03-27
申请号：US548316
申请日：1983-11-03
CPC分类号： B61L25/045 , B61L25/048 , G01S13/758
摘要： An interrogator-responder communication system in which responders are carried by vehicles (such as railroad vehicles) travelling along a route and in which an interrogating station situated along the route operates each passing responder to recall data from a memory in the passing responder. In one embodiment, the responder is equipped to receive data transmitted from a transmit station and to store the received data, for later recall, in a non-volatile, electrically erasable read/write memory.
摘要翻译： 一种询问器响应者通信系统，其中响应者由沿着路线行进的车辆（例如铁路车辆）携带，并且其中沿着路线位于的询问站操作每个经过的响应者以从经过的响应者中的存储器调用数据。 在一个实施例中，应答器被配备为接收从发送站发送的数据并存储接收到的数据，以供以后调用在非易失性电可擦除读/写存储器中。
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公开(公告)号：US5437184A
公开(公告)日：1995-08-01
申请号：US144131
申请日：1993-10-27
申请人： Robert W. Shillady
发明人： Robert W. Shillady
IPC分类号： G01F23/26
CPC分类号： G01F23/266 , G01F23/268
摘要： A capacitive liquid level sensor having phase detecting circuitry incorporates a capacitive sensor array, an oscillator generating an input signal, a switching circuit sequentially coupling the input signal to the input plates of the capacitive sensor, one at a time, a pair of phase lock loop circuits (PLLs) each having voltage controlled oscillators (VCOs), a second switching circuit selectively coupling the output plates of the capacitive sensor array, in sequential fashion, to the PLLs, and an exclusive OR-gate (XOR) receiving the outputs of the VCOs from each of the PLLs. The XOR generates a first logic level signal when a difference in the phase of two signals from any two adjacent output plates indicates that a phase difference is present. A second logic signal is generated if no phase difference is detected. The signals are perfectly in phase when any two adjacent output plates are either submerged in fluid or both disposed in air. The phases of the output signals differ, however, when the two adjacent output plates are such that one is submerged in fluid while the other is at least partially disposed in air. Signal conditioning means including a pair of D flip flops and a resistive ladder coupled through a switching network provide an output signal to an optional display device for indicating a corresponding fluid level within a fluid reservoir within which the capacitive sensor array is disposed. In an alternative embodiment an integrator is included for determining the composition of the fluid being sensed.
摘要翻译： 具有相位检测电路的电容液位传感器包括电容传感器阵列，产生输入信号的振荡器，将输入信号顺序地耦合到电容式传感器的输入板的开关电路，一次一个，一对锁相环 每个电路（PLL）具有压控振荡器（VCO），第二开关电路以顺序的方式将电容传感器阵列的输出板选择性地耦合到PLL，以及接收输出的异或门（XOR） 每个PLL的VCO。 当来自任何两个相邻输出板的两个信号的相位差出现相位差时，异或产生第一逻辑电平信号。 如果没有检测到相位差，则产生第二逻辑信号。 当任何两个相邻的输出板被浸没在流体中或两者都设置在空气中时，信号是完全同相的。 然而，输出信号的相位不同，当两个相邻的输出板使得一个被浸没在流体中而另一个输出板至少部分地设置在空气中时。 包括一对D触发器和通过开关网络耦合的电阻梯形图的信号调节装置向可选显示装置提供输出信号，用于指示其中设置电容传感器阵列的流体储存器内的对应流体水平。 在替代实施例中，包括积分器以确定被感测的流体的组成。
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公开(公告)号：US4594557A
公开(公告)日：1986-06-10
申请号：US754059
申请日：1985-07-11
申请人： Robert W. Shillady
发明人： Robert W. Shillady
IPC分类号： H03D1/10
CPC分类号： H03D1/10
摘要： A traveling wave video detector utilizing microwave integrated circuit techniques provides increased dynamic range, increased rf bandwidth up to 100 Ghz and improved impedance matching at high input power levels. The video detector comprises an artificial transmission line wherein the shunt elements are spaced semiconductor detector diodes which lie in a substantially common plane. In the microwave integrated circuit (MIC) embodiment, the diodes are interconnected by arc shaped wire inductance elements which also lie in a substantially common plane. The particular planar arrangement and location of elements in the present invention provides the desired dynamic range, impedance matching and rf bandwidth.
摘要翻译： 利用微波集成电路技术的旅行波视频检测器提供了增加的动态范围，增加了高达100Ghz的rf带宽，并在高输入功率电平下提高了阻抗匹配。 视频检测器包括人造传输线，其中分路元件是位于基本上共同的平面中的半导体检测器二极管。 在微波集成电路（MIC）实施例中，二极管通过也位于基本共同的平面中的弧形线电感元件互连。 本发明的元件的特定平面布置和位置提供期望的动态范围，阻抗匹配和rf带宽。
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