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公开(公告)号：EP2574735A1
公开(公告)日：2013-04-03
申请号：EP12186718.8
申请日：2012-09-28
CPC分类号： F01D21/003 , F01D21/04 , F05D2260/80 , F05D2270/804 , G01B7/14 , H03K17/9545 , H03K2017/9527
摘要： Target sensor comprising: sensor probe having a resonance frequency that changes as the separation of the sensor probe and a target changes. Oscillator arranged to apply a radio frequency (RF) signal to the sensor probe, the oscillator having: control circuitry configured to regulate the frequency of the RF signal applied to the sensor probe to below the resonance frequency of the sensor probe. Detector arranged to detect an electrical characteristic of the oscillator that varies with the impedance of the sensor probe indicating an interaction of the sensor probe with the target.
摘要翻译： 目标传感器包括：传感器探头，其具有随着传感器探针和目标的分离改变而改变的共振频率。 振荡器被布置为向传感器探针施加射频（RF）信号，振荡器具有：控制电路，其被配置为将施加到传感器探针的RF信号的频率调节到传感器探头的谐振频率以下。 检测器被布置成检测振荡器的电特性，其随传感器探头的阻抗指示传感器探头与目标的相互作用而变化。
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公开(公告)号：EP2338032A2
公开(公告)日：2011-06-29
申请号：EP09757757.1
申请日：2009-06-02
IPC分类号： G01D5/14
摘要： Position sensor (10') and method for measuring the position of an object comprising, a sensing element and an oscillator (30) coupled to the sensing element such that an electromagnetic field is emitted from the sensing element. An output, arranged to provide a signal, varies in dependence upon a change in an electrical property of the oscillator (30). Change in object position relative to the sensing element alters the electrical property of the oscillator (30). Sensing element comprises at least one discontinuity arranged to perturb the signal at a predetermined object position. Alternatively, there is a temperature compensator in proximity to the sensing element and arranged to compensate the signal for changes in temperature.
摘要翻译： 位置传感器（10'）和用于测量物体位置的方法，包括传感元件和耦合到传感元件的振荡器（30），使得从传感元件发射电磁场。 布置成提供信号的输出根据振荡器（30）的电特性的变化而变化。 物体相对于传感元件的位置变化改变了振荡器（30）的电特性。 感测元件包括至少一个不连续点，该不连续点被布置成干扰预定对象位置处的信号。 或者，在感测元件附近有一个温度补偿器，用于补偿温度变化的信号。
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公开(公告)号：EP2201221A2
公开(公告)日：2010-06-30
申请号：EP08806212.0
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 a 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： 一种用于检测包括电振荡器的转子叶片（430）的转子叶片传感器，所述电振荡器被设置为产生振荡信号。 天线（300）包括具有耦合到电振荡器的一个或两个绕组层的线圈（100）。 天线（300）可以替代地或者也可以包括包括多个绕组层的线圈（100），每个绕组层通过用于显着减小层间电容的间隔件分开，耦合到电振荡器。 天线（300）在基本上是天线（300）的谐振频率的情况下由振荡器的振荡信号在使用中被驱动。 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）的电特性随着天线（300）和转子叶片之间的相互作用改变并且检测器电路被布置为监测 这些电气特性。
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4.发明公开DEVICE FOR DETERMINING PROPERTIES OF A FLUID BY MEANS OF A COAXIAL RESONATOR SHORTED AT ONE END BY A PLATE THROUGH WHICH THE FLUID FLOWS 审中-公开装置用于确定与一个液体的性质，在其一端由流板SHORT CLOSED同轴谐振器
公开(公告)号：EP2598862A2
公开(公告)日：2013-06-05
申请号：EP11745944.6
申请日：2011-07-22
发明人： PARKER, Alan
CPC分类号： G01N27/00 , G01N22/00 , G01N33/2847 , H01P7/06
摘要： Cavity resonator comprising: a cavity having a fluid entrance and a fluid exit forming a fluid flow path through the cavity. A shorting plate within the cavity arranged within the fluid flow path. The cavity resonator may be used in a system for detecting properties of a fluid, where the system also comprises a fluid supply, a high frequency supply, and a detector for detecting one or more resonant frequencies of the cavity resonator.
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公开(公告)号：EP2593780A2
公开(公告)日：2013-05-22
申请号：EP11745566.7
申请日：2011-07-13
发明人： WHERRITT, Peter
IPC分类号： G01N27/22
CPC分类号： G01N27/221 , G01N33/2829
摘要： Method of measuring the composition of a fuel comprising the steps of: measuring a real permittivity of the fuel. Measuring an imaginary permittivity of the fuel. Determining a proportion of biodiesel in the fuel based on the measured real permittivity. Determining a proportion of unrefined oil in the fuel based on the measured imaginary permittivity.
摘要翻译： 电容率传感器和方法，包括：具有工作特性（F，V）的振荡器（L，40） 耦合到所述振荡器并且布置成响应于呈现给所述介电常数感测元件的介电常数的变化而改变所述振荡器的操作特性的介电常数感测元件（30） 可切换地（220）的参考元件（220）耦合到所述振荡器和所述电容率感测元件并被布置成改变所述振荡器的操作特性。 测量燃料组成的方法，包括以下步骤：测量燃料的实际介电常数; 测量燃料的虚拟介电常数; 基于所测量的实际介电常数确定燃料中生物柴油的比例。 基于测量的虚拟介电常数确定燃料中未精炼油的比例。
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公开(公告)号：EP2284478A1
公开(公告)日：2011-02-16
申请号：EP10251315.7
申请日：2010-07-23
IPC分类号： G01B7/14
摘要： Proximity sensor 10 for detecting the proximity of a conductive component 40 comprising an oscillator having electrical properties and arranged to provide an oscillating signal. First coil 20 arranged to receive the oscillating signal and alter the electrical properties of the oscillator by a first variation in response to the proximity of the conductive component to the proximity sensor. Second coil 30 arranged to receive the oscillating signal and alter the electrical properties of the oscillator by a second variation in response to the proximity of the conductive component 40 to the proximity sensor, wherein the first coil 20 and the second coil 30 cause a different variation to the electrical properties of the oscillator for the same proximity of the conductive component 40 to the proximity sensor 10. Proximity output arranged to provide a proximity signal which varies in dependence upon the proximity of the conductive component 40 to the proximity sensor and based on a comparison of the first variation to the second variation.
摘要翻译： 接近传感器10，用于检测导电部件40的接近度，导电部件40包括具有电性能的振荡器，并被布置成提供振荡信号。 第一线圈20被布置成响应于导电部件与接近传感器的接近而通过第一变化来接收振荡信号并改变振荡器的电特性。 第二线圈30被布置成响应于导电部件40与接近传感器的接近而通过第二变化来接收振荡信号并改变振荡器的电特性，其中第一线圈20和第二线圈30产生不同的变化 涉及用于导电部件40到接近传感器10相同接近的振荡器的电气特性。接近输出被布置成提供接近信号，该接近信号根据导电部件40与接近传感器的接近度而变化，并且基于 第一个变化与第二个变化的比较。
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公开(公告)号：EP2380275A1
公开(公告)日：2011-10-26
申请号：EP10702155.2
申请日：2010-01-18
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.
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公开(公告)号：EP2380274A1
公开(公告)日：2011-10-26
申请号：EP10702156.0
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.
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