公开(公告)号：US06985046B2

公开(公告)日：2006-01-10

申请号：US10425558

申请日：2003-04-29

申请人： Harry Schilling

发明人： Harry Schilling

IPC分类号： H01P1/06

CPC分类号： G08C19/10

摘要： In a device for the transmission of electrical signals between at least two units mobile relative to each other, such as a slip ring or a sliding path, a shielding surface of an electrically conductive material is provided to reduce interference radiation and interference sensitivity, and to diminish a coupling with adjacent paths.

摘要翻译： 在用于在至少两个相对于彼此移动的单元（例如滑环或滑动路径）之间传输电信号的装置中，提供导电材料的屏蔽表面以减少干扰辐射和干扰灵敏度，并且 减少与相邻路径的耦合。

公开(公告)号：US20030214421A1

公开(公告)日：2003-11-20

申请号：US10425558

申请日：2003-04-29

申请人： Schleifring und Apparatebau GmbH

发明人： Harry Schilling

IPC分类号： G08C019/10 ,  G08C019/16

CPC分类号： G08C19/10

摘要： What is described here is a device for the transmission of electric signals between at least two units mobile relative to each other, such as a slip ring or a sliding path, respectively. For a reduction of unwanted radiation or of cross-sensitivity, respectively, and for a reduction of the coupling with neighbouring paths, a shielding surface of electrically conductive material is provided.

摘要翻译： 这里描述的是用于在至少两个相对于彼此移动的单元之间传输电信号的装置，例如滑环或滑动路径。 为了分别减少不需要的辐射或交叉敏感性，并且为了减少与相邻路径的耦合，提供导电材料的屏蔽表面。

公开(公告)号：US5705978A

公开(公告)日：1998-01-06

申请号：US536766

申请日：1995-09-29

申请人： Roger L. Frick ,  Ahmed H. Tewfik ,  John P. Schulte

发明人： Roger L. Frick ,  Ahmed H. Tewfik ,  John P. Schulte

IPC分类号： G08C19/02 ,  G08C19/10 ,  G08B29/00

CPC分类号： G08C19/10 ,  G08C19/02

摘要： A transmitter in a process control system includes input/output circuitry for coupling to a process control loop. A first sensor having a first impedance is responsive to a first sensed parameter. A second sensor having a second impedance is responsive to a sensed parameter. First and second excitation signals are applied to the first and second sensors. A summing node sums the outputs of the first and second sensors. An analog to digital converter provides a digital output representative of the summed signals. Digital signal processing circuitry coupled to the analog to digital converter provides an output related to the outputs of the first and second sensors to the input/output circuitry for transmission over the process control loop.

摘要翻译： 过程控制系统中的变送器包括用于耦合到过程控制回路的输入/输出电路。 具有第一阻抗的第一传感器响应于第一感测参数。 具有第二阻抗的第二传感器响应感测参数。 第一和第二激励信号被施加到第一和第二传感器。 求和节点对第一和第二传感器的输出求和。 模数转换器提供代表求和信号的数字输出。 耦合到模数转换器的数字信号处理电路将与第一和第二传感器的输出相关的输出提供给输入/输出电路，以便在过程控制环路上传输。

公开(公告)号：US4250490A

公开(公告)日：1981-02-10

申请号：US4764

申请日：1979-01-19

申请人： Charles J. Dahlke

发明人： Charles J. Dahlke

IPC分类号： G08C19/10 ,  G06G7/20

CPC分类号： G08C19/10

摘要： A two wire current transmitter provides a current signal representative of a parameter measured by a variable reactance sensor which may be located in a hostile environment, remote from the signal conditioning and transmitter electronics through transmission circuitry from the electronics including a separate transformer winding energized by a pair of twisted cables to reduce the capacitive, inductive and resistive effects of long wires. The transformer circuitry provides power to the sensor which provides the signal conditioning and transmitter electronics a signal, representing the parameter measured, which controls the current control, to modify the total current through the same two wires used to carry power to the signal conditioning and transmitter electronics, so that the total current is representative of the measured parameter.

摘要翻译： 双线电流变送器提供代表由可变电抗传感器测量的参数的电流信号，该可变电抗传感器可以位于恶劣环境中，远离信号调理和发射机电子设备，通过来自电子器件的传输电路，包括由 双绞电缆，以减少长电线的电容，电感和电阻效应。 变压器电路为传感器提供电力，其向信号调理和发射器电子装置提供一个信号，其表示所测量的参数，其控制电流控制，以通过用于将功率传送到信号调理和发射器的相同的两条电线来修改总电流 电子元件，使总电流代表测量参数。

公开(公告)号：US5159335A

公开(公告)日：1992-10-27

申请号：US661247

申请日：1991-02-26

申请人： John E. Veneruso

发明人： John E. Veneruso

IPC分类号： G01D5/241 ,  G08C19/10

CPC分类号： G08C19/10 ,  G01D5/2412

摘要： A humidity and temperature resistant apparatus for determining the orientation of a rotatable meter hand relative to a dial spaced apart from a meter hand that creates and depletes a charge between a center electrode, a meter hand, and an outer electrode ( a pad) very rapidly to transport electrons through a resistor capacitor combination, attached to a positive power supply, whereby the average current drawn through the resistor capacitor combination creates a voltage across the resistor capacitor combination that corresponds proportionally to the magnitude of the capacitance being measured.

摘要翻译： 一种用于确定可旋转仪表手相对于与仪表手间隔开的表盘的方向的耐湿温度设备，其非常快速地在中心电极，仪表手和外部电极（垫）之间产生和消耗电荷 以将电子传送通过电阻器电容器组合，连接到正电源，由此通过电阻器电容器组合引出的平均电流在电阻器电容器组合上产生与被测电容的大小成正比的电压。

公开(公告)号：US5030950A

公开(公告)日：1991-07-09

申请号：US425702

申请日：1989-10-23

申请人： John E. Veneruso

发明人： John E. Veneruso

IPC分类号： G08C19/10

CPC分类号： G08C19/10

摘要： An apparatus for remotely monitoring the position of a rotatable member, relative to a substrate spaced apart from the rotatable member, as the rotatable member is rotated about an axis of rotation by an axle, including an array of spaced-apart, outer electrodes delimiting a center portion, a center electrode in the center portion and first and second transistors in contact with the center electrode; each outer electrode is in contact with a transistor used to selectively connect an outer electrode to ground; the first transistor, when turned on, supplies current to the center electrode to form a charge to a capacitor formed by the center electrode, rotatable member, and predetermined outer electrode, and the second transistor, when turned on, supplies current proportional to the formed charge to a current-to-voltage converter; a clock is connected to and controls the first and second transistors, turning them on and off so that when one is off and the other is on, in a repetitive cycle; the average voltage output of the current-to-voltage converter is proportional to the capacitance formed by the center electrode, rotatable member, and the predetermined outer electrode and the converter's output is connected to a low-pass filter, the voltage output of the low-pass filter is compared to one or more fixed voltage references by a comparator, which generates an output voltage that reflects the results of the comparison and, a microprocessor scans the output of the comparator, changes the fixed reference to another value if there is more than one, selects the outer electrodes one at a time, and determines the rotational position of the rotatable member.

摘要翻译： 一种用于远程监视可旋转构件相对于与可旋转构件间隔开的衬底的位置的装置，因为可旋转构件通过轴围绕旋转轴线旋转，包括间隔开的外部电极阵列，其限定 中心部分，中心部分的中心电极和与中心电极接触的第一和第二晶体管; 每个外部电极与用于选择性地将外部电极连接到地的晶体管接触; 当第一晶体管导通时，向中心电极提供电流以对由中心电极，可旋转构件和预定的外部电极形成的电容器形成电荷，并且第二晶体管在导通时提供与所形成的电流成比例的电流 对电流 - 电压转换器充电; 时钟连接到并控制第一和第二晶体管，使其接通和断开，使得当一个断开而另一个在导通时，在重复的周期中; 电流 - 电压转换器的平均电压输出与由中心电极，可旋转构件和预定外部电极形成的电容成比例，并且转换器的输出连接到低通滤波器，低电平的电压输出 通过滤波器通过比较器与一个或多个固定电压基准进行比较，该比较器产生反映比较结果的输出电压，并且微处理器扫描比较器的输出，如果存在更多的则将固定参考值改变为另一个值 一个选择一个一个的外部电极，并且确定可旋转构件的旋转位置。

公开(公告)号：US4193063A

公开(公告)日：1980-03-11

申请号：US905688

申请日：1978-05-15

申请人： James J. Hitt ,  George C. Mergner

发明人： James J. Hitt ,  George C. Mergner

IPC分类号： G01L9/00 ,  G01L9/12 ,  G01R27/26 ,  G08C19/10 ,  G08C19/00

CPC分类号： G08C19/10 ,  G01L9/0072 ,  G01L9/12 ,  G01R27/2605

摘要： The displacement of the diaphragm in a differential pressure sensor of the differential capacitor type produces an output signal substantially linearly related to the displacement. The capacitors are charged in parallel from a constant current source for a fixed period of time and discharged through separate discharge circuits for another fixed period of time. An integrating differential amplifier connected to the two capacitors as they discharge produces an output signal related to the area between the two discharge curves which is substantially linearly related to the extent of displacement of the diaphragm of the differential pressure sensor. The output from the amplifier is used to control the current output from the device.

摘要翻译： 差分电容器类型的差压传感器中的隔膜的位移产生与位移基本线性相关的输出信号。 电容器从恒定电流源并联充电一段固定的时间，并通过单独的放电电路放电一段固定的时间。 在放电时，与两个电容器连接的积分差分放大器产生与两个放电曲线之间的区域相关的输出信号，该输出信号基本上与差压传感器的隔膜的位移程度线性相关。 放大器的输出用于控制器件的电流输出。

公开(公告)号：US3975719A

公开(公告)日：1976-08-17

申请号：US542124

申请日：1975-01-20

申请人： Roger L. Frick

发明人： Roger L. Frick

IPC分类号： G08C19/02 ,  G01L9/12 ,  G01R27/26 ,  G08C19/10

CPC分类号： G08C19/10 ,  G01L9/12 ,  G01R27/2605

摘要： A two wire current transmitter providing a current signal representing a parameter measured by a variable reactance transducer along the same two wires that are used to carry excitation power to the circuit. The reactance is measured by a circuit providing a DC signal which controls a current control stage to modify the total current through the two wires. The current control stage has a small number of components and operates on a relatively low voltage.

摘要翻译： 双线电流变送器，其提供表示由可变电抗传感器测量的参数的电流信号，沿着用于将电力传递到电路的相同的两根导线。 通过提供DC信号的电路来测量电抗，该DC信号控制电流控制级以修改通过两条电线的总电流。 电流控制级具有少量的部件并且在相对低的电压下工作。

公开(公告)号：US3961318A

公开(公告)日：1976-06-01

申请号：US541983

申请日：1975-01-17

申请人： Robert W. Farrand ,  Joseph Elbling

发明人： Robert W. Farrand ,  Joseph Elbling

IPC分类号： G01D5/24 ,  G01B7/30 ,  G01D5/245 ,  G08C19/10 ,  H03M1/64 ,  G08C19/16

CPC分类号： H03M1/645 ,  G01B7/30 ,  G08C19/10

摘要： Two relatively movable, spaced elements having electrostatically coupled sets of uniformly spaced interdigitated electrodes form a precision, high gain linear or angular position-measuring transducer. Coupling electrodes on one element capacitively couple to portions of the electrodes on the other element so that electrical connections to external excitation and detection circuitry need be made to only one of the two elements. The shape and dimensions of the electrodes can be arranged to reduce or eliminate undesired impedance variations, capacitive coupling and unwanted harmonic coupling wave frequency components.

摘要翻译： 具有静电耦合的均匀间隔的叉指电极的两个相对可移动的间隔元件形成精确的高增益线性或角度位置测量换能器。 一个元件上的耦合电极电容地耦合到另一元件上的电极的部分，使得到外部激励和检测电路的电连接仅需要作为两个元件之一。 电极的形状和尺寸可以布置成减少或消除不期望的阻抗变化，电容耦合和不需要的谐波耦合波频率分量。

公开(公告)号：US20170316683A1

公开(公告)日：2017-11-02

申请号：US15431584

申请日：2017-02-13

申请人： Ideation Systems LLC

发明人： Lukasz Leszek Pietrasik ,  Adam Waldemar Golinski ,  Filip Mateusz Kaklin ,  Ahmad Hani Zaatari ,  Daniel James Yee ,  Mohsen Nakhaeinejad

IPC分类号： G08C19/10 ,  G01D21/02 ,  G01D11/24 ,  G01D18/00 ,  G08C19/22 ,  G01R19/00

CPC分类号： G08C19/10 ,  G01D11/245 ,  G01D11/30 ,  G01D18/008 ,  G01D21/02 ,  G01R19/0023 ,  G08C19/22 ,  H04L67/10 ,  H04L67/12 ,  H04W4/38 ,  H04W4/60 ,  H04W4/80

摘要： In some embodiments, a sensor device can include a base module including a battery and including a transceiver configured to communicate with a computing device. The sensor device may further include one or more sensor modules configured to releasably couple to the base module. Each sensor module may be configured to receive power from the base module and to provide data to the base module