-
公开(公告)号：US20100213929A1
公开(公告)日：2010-08-26
申请号：US12678036
申请日：2008-09-08
摘要： A rotor blade sensor for detecting a rotor blade (430) comprising an electrical oscillator arranged to generate an oscillating signal. An antenna (300) includes a coil (100) having one or two winding layers coupled to the electrical oscillator. The antenna (300) may instead or as well include a coil (100) comprising a plurality of winding layers, each layer being separated by al spacer for substantially reducing inter-layer capacitance, being coupled to the electrical oscillator. The antenna (300) is driven in use by the oscillating signal of the oscillator at substantially a resonant frequency of the antenna (300). The antenna generates an antenna electromagnetic field that interacts with a rotor blade (430) such that the electrical characteristics of the antenna (300) vary as the interaction between the antenna (300) and the rotor blade changes and a detector circuit is arranged to monitor these electrical characteristics.
摘要翻译： 一种用于检测转子叶片（430）的转子叶片传感器，其包括布置成产生振荡信号的电振荡器。 天线（300）包括线圈（100），其具有耦合到电振荡器的一个或两个绕组层。 天线（300）可以代替地或者包括包括多个绕组层的线圈（100），每个层被隔离层分隔开，用于实质上减少层间电容，耦合到电振荡器。 天线（300）在天线（300）的基本上共振频率下被振荡器的振荡信号驱动。 天线产生与转子叶片（430）相互作用的天线电磁场，使得天线（300）的电气特性随着天线（300）和转子叶片之间的相互作用发生变化并且检测器电路被布置成监测 这些电气特性。
-
公开(公告)号：US08614606B2
公开(公告)日：2013-12-24
申请号：US13144878
申请日：2010-01-18
CPC分类号： H03B5/1805 , H03K17/9542
摘要： An electrical, magnetic or electromagnetic delay line self oscillator is described with a delay line arrangement, an oscillator control circuitry, and a frequency selection impedance connecting the delay line arrangement and the oscillator control circuitry and presenting an impedance to the delay line arrangement. The oscillator control circuitry includes an amplifier, a non linear amplitude control element (N-LACE) such as an active device with a negative differential conductance that provides an output amplitude has a negative second derivative with respect to an input signal, and a driver. The modal characteristics of electromagnetic delay lines can thus be exploited across a wide range of instrumentation applications, and a means is provided to enhance the achievable functionality and/or performance of the instrumentation without the need for expensive additional electrical hardware or electronics.
摘要翻译： 用延迟线布置，振荡器控制电路和连接延迟线布置和振荡器控制电路并向延迟线布置呈现阻抗的频率选择阻抗来描述电，磁或电磁延迟线自振荡器。 振荡器控制电路包括放大器，非线性幅度控制元件（N-LACE），例如具有负差分电导的有源器件，其提供输出幅度相对于输入信号具有负二阶导数，以及驱动器。 因此，电磁延迟线的模态特性可以在广泛的仪器应用中被利用，并且提供了一种手段来增强仪器的可实现的功能和/或性能，而不需要昂贵的额外的电气硬件或电子设备。
-
公开(公告)号：US20120133448A1
公开(公告)日：2012-05-31
申请号：US13144886
申请日：2010-01-18
IPC分类号： H03B5/36
CPC分类号： G01N3/32 , G01N2203/0008 , G01N2203/0051 , G01N2203/0688 , G01Q60/52 , H03K17/95
摘要： A mechanical oscillator arrangement includes a mechanical structure (30) having at least one transmission path through it, and at least one mode. A controller (40) is provided with an amplifier (70) and a feedback network (80, 90) which together provide a positive feedback oscillator for exciting a mode of the mechanical structure (30). The feedback network (80, 90) comprises a non linear amplitude control element (N-LACE) (90), a frequency dependent gain element with an electronic transfer function, and a phase compensator (80). The mechanical oscillator arrangement also includes an actuator (606) which excites the mechanical structure (30) based upon an output from the controller (40), and a sensor (60a) which senses vibrations in the mechanical structure (30) and then outputs a signal to the controller (40) based upon the sensed vibrations. Such a stabilized positive feedback arrangement is self exciting at the effective resonance frequency of the mechanical structure and avoids the need for an external fixed or variable frequency driver.
摘要翻译： 机械振荡器装置包括具有穿过其的至少一个传输路径的机械结构（30）和至少一个模式。 控制器（40）设置有放大器（70）和反馈网络（80,90），其一起提供用于激励机械结构（30）的模式的正反馈振荡器。 反馈网络（80,90）包括非线性幅度控制元件（N-LACE）（90），具有电子传递函数的频率相关增益元件和相位补偿器（80）。 机械振荡器装置还包括基于来自控制器（40）的输出激励机械结构（30）的致动器（606）和感测机械结构（30）中的振动的传感器（60a），然后输出 基于感测的振动向控制器（40）发送信号。 这种稳定的正反馈装置在机械结构的有效共振频率下是自激的，并且避免了对外部固定或可变频率驱动器的需要。
-
公开(公告)号：US20110316638A1
公开(公告)日：2011-12-29
申请号：US13144878
申请日：2010-01-18
CPC分类号： H03B5/1805 , H03K17/9542
摘要： An electrical, magnetic or electromagnetic delay line self oscillator is described with a delay line arrangement, an oscillator control circuitry, and a frequency selection impedance connecting the delay line arrangement and the oscillator control circuitry and presenting an impedance to the delay line arrangement. The oscillator control circuitry includes an amplifier, a non linear amplitude control element (N-LACE) such as an active device with a negative differential conductance that provides an output amplitude has a negative second derivative with respect to an input signal, and a driver. The modal characteristics of electromagnetic delay lines can thus be exploited across a wide range of instrumentation applications, and a means is provided to enhance the achievable functionality and/or performance of the instrumentation without the need for expensive additional electrical hardware or electronics.
摘要翻译： 用延迟线布置，振荡器控制电路和连接延迟线布置和振荡器控制电路并向延迟线布置呈现阻抗的频率选择阻抗来描述电，磁或电磁延迟线自振荡器。 振荡器控制电路包括放大器，非线性幅度控制元件（N-LACE），例如具有负差分电导的有源器件，其提供输出幅度相对于输入信号具有负二阶导数，以及驱动器。 因此，电磁延迟线的模态特性可以在广泛的仪器应用中被利用，并且提供了一种手段来增强仪器的可实现的功能和/或性能，而不需要昂贵的额外的电气硬件或电子设备。
-
公开(公告)号：US20110109406A1
公开(公告)日：2011-05-12
申请号：US12934590
申请日：2009-03-27
申请人： John Francis Gregg , Mazhar Barl
发明人： John Francis Gregg , Mazhar Barl
IPC分类号： H01P7/06
CPC分类号： H03B5/1823 , G01N22/04
摘要： Apparatus comprising: a radio frequency (RF) Robinson oscillator comprising: a resonator comprising a sensor rhumbatron, the sensor rhumbatron comprising a cavity member, the cavity member having a re-entrant boss member, the re-entrant boss member being arranged to project into a cavity portion of the cavity member; a feedback element arranged to provide positive radio frequency (RF) feedback to the cavity member thereby to increase a quality factor Q of the cavity member, the feedback element having first and second terminals coupled to the cavity member, the apparatus being operable to cause the oscillator to oscillate at a resonant frequency; and an output arranged to provide a signal that varies according to a value of at least one electrical parameter of the oscillator, said at least one electrical parameter being selected from amongst an electromagnetic loss and a resonant frequency.
摘要翻译： 该装置包括：射频（RF）罗宾逊振荡器，包括：谐振器，其包括传感器，所述传感器包括空腔构件，所述空腔构件具有入口凸起构件，所述凹入构件布置成投射到 空腔构件的空腔部分; 反馈元件，布置成向空腔构件提供正射频（RF）反馈，从而增加空腔构件的质量因子Q，反馈元件具有联接到空腔构件的第一和第二端子，该装置可操作以使 振荡器以谐振频率振荡; 以及输出，被布置为提供根据所述振荡器的至少一个电参数的值而变化的信号，所述至少一个电参数从电磁损耗和谐振频率中选择。
-
公开(公告)号：US09752705B2
公开(公告)日：2017-09-05
申请号：US14116260
申请日：2012-05-10
IPC分类号： F16L55/00 , F16L9/14 , G01N22/00 , G01N29/22 , G01F1/58 , G01F1/32 , G01F1/44 , G01F1/66 , G01F15/14
摘要： A fluid conduit (2) comprises a wall (4) defining a fluid flow path (6) and a confinement feature (24) within the wall (4) and being configured to confine energy within a cavity (26), wherein at least a portion of the fluid flow path (6) extends through the cavity (26). The confinement feature (24) may be configured to confine electromagnetic energy. The fluid conduit (2) may comprise an oscillator defined by the cavity (26) and a positive feedback arrangement (34). The fluid conduit (2) may be configured for sensing a property of a fluid present in or flowing through the fluid conduit (2) or for use in sensing a property of a fluid present in or flowing through the fluid conduit (2). More specifically, the present invention deals with a microwave cavity sensor wherein the cavity member (24) is embedded in the wall (4) of the fluid conduit (2), the wall (4) including a composite region (20).
-
公开(公告)号：US20110316560A1
公开(公告)日：2011-12-29
申请号：US13144880
申请日：2010-01-18
IPC分类号： G01R27/28
CPC分类号： H03B5/1805 , H03B5/1817 , H03K17/9542
摘要： A self-oscillating remote sensor device includes a delay-line sensor system having at least one delay-line and at least one sensor element. The device also includes an oscillator control circuitry, and a frequency selection impedance connecting the delay-line sensor system and the oscillator control circuitry and presenting an impedance to the delay-line sensor system. The oscillator control circuitry includes an amplifier, a non linear amplitude control element (N-LACE) such as an active device with a negative differential conductance that provides an output whose amplitude has a negative second derivative with respect to an input signal, and a driver. Such a device permits successful interaction between electrical sensors and controlling (driving) electronics over long distances without the problems normally encountered when a delay-line is presented between an electrical sensor and its driver electronics.
摘要翻译： 自振荡远程传感器装置包括具有至少一个延迟线和至少一个传感器元件的延迟线传感器系统。 该装置还包括振荡器控制电路和连接延迟线传感器系统和振荡器控制电路并向延迟线传感器系统呈现阻抗的频率选择阻抗。 振荡器控制电路包括放大器，非线性幅度控制元件（N-LACE），例如具有负差分电导的有源器件，其提供其幅度相对于输入信号具有负二阶导数的输出，以及驱动器 。 这种设备允许电传感器和长距离控制（驱动）电子设备之间成功的相互作用，而没有在电传感器和其驱动器电子器件之间呈现延迟线时通常遇到的问题。
-
公开(公告)号：US20110314914A1
公开(公告)日：2011-12-29
申请号：US13144888
申请日：2009-01-18
IPC分类号： G01H17/00
CPC分类号： H03B5/30
摘要： An acoustic oscillator arrangement includes an acoustic system having at least one acoustic transmission path through it, and at least one mode. The acoustic transmission path is of variable length. A controller is provided with an amplifier and a feedback network which together provide a positive feedback oscillator for exciting a mode of the acoustic system. The feedback network comprises a non linear amplitude control element (N-LACE), a frequency dependent gain element with an electronic transfer function, and a phase compensator. The acoustic oscillator arrangement also includes an acoustic transmitter which launches an acoustic signal into the acoustic system based upon an output from the controller, and an acoustic receiver which receives an acoustic signal from the acoustic system which is fed back to the controller. Such a stabilized positive feedback arrangement is self exciting at the effective resonance frequency of the acoustic system and avoids the need for an external fixed or variable frequency driver.
摘要翻译： 声振荡器装置包括具有通过其的至少一个声传播路径的声学系统和至少一种模式。 声传播路径长度可变。 控制器设置有放大器和反馈网络，其一起提供用于激励声学系统的模式的正反馈振荡器。 反馈网络包括非线性幅度控制元件（N-LACE），具有电子传递函数的频率相关增益元件和相位补偿器。 声振荡器装置还包括声发射器，该声发射器基于来自控制器的输出将声信号发射到声系统中;以及声接收器，其接收来自声系的声信号，所述声信号被反馈到控制器。 这种稳定的正反馈装置在声学系统的有效谐振频率处是自激的，并且避免了对外部固定或可变频率驱动器的需要。
-
公开(公告)号：US08018222B2
公开(公告)日：2011-09-13
申请号：US12280908
申请日：2007-01-31
IPC分类号： G01B7/14
CPC分类号： G01D5/20
摘要： There is described a position sensor comprising a sensor electromagnetic field generator, a screen arranged to confine the sensor electromagnetic field, and an output. The output is arranged to provide a signal which varies in dependence upon an amount of flux compression of the electromagnetic field resulting from the presence of the screen. The amount of flux compression is related to a position of the screen in relation to the sensor electromagnetic field generator. There is also described a method of detecting a relative position of an electromagnetic field generator and a screen.
摘要翻译： 描述了一种位置传感器，其包括传感器电磁场发生器，布置成限制传感器电磁场的屏幕和输出。 输出被布置成提供根据由屏幕的存在导致的电磁场的磁通压缩量而变化的信号。 磁通压缩量与屏幕相对于传感器电磁场发生器的位置有关。 还描述了一种检测电磁场发生器和屏幕的相对位置的方法。
-
公开(公告)号：US06919608B2
公开(公告)日：2005-07-19
申请号：US10221566
申请日：2001-03-13
申请人： John Francis Gregg
发明人： John Francis Gregg
IPC分类号： H01L21/331 , H01L29/66 , H01L29/73 , H01L29/72
CPC分类号： H01L29/66984
摘要： A spin transistor (10) comprises a spin injector (50) formed of a ferromagnetic material and constituting the emitter (20) of a three-terminal device, a spin filter (70) also formed of a ferromagnetic material and constituting a collector (40), and a semiconductor base (30) region.A tunnelling barrier (60) is formed of an insulating metal oxide such as aluminium oxide between the emitter (20) and the base (30). The tunnelling barrier (60) reduces the degree of spin depolarization as carriers are injected into the base (30), and permits selection of spin injection energy. In preferred embodiments, a second tunnelling barrier (80) may be formed between the base (30) and the collector (40). A method of manufacture is also provided.
摘要翻译： 自旋晶体管（10）包括由铁磁材料形成并构成三端子器件的发射极（20）的旋转注入器（50），还由铁磁材料形成并构成集电极（40）的自旋滤波器 ）和半导体基底（30）区域。 隧道势垒（60）由发射极（20）和基极（30）之间的绝缘金属氧化物（例如氧化铝）形成。 隧道势垒（60）降低了离子去极化的程度，因为载体被注入到基底（30）中，并且允许选择自旋注入能量。 在优选实施例中，第二隧道势垒（80）可以形成在基座（30）和收集器（40）之间。 还提供了一种制造方法。
-
-
-
-
-
-
-
-
-
搜索结果
16 条记录 (耗时 0.023 秒)
