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    • 21. 发明公开
    • A transducer
    • Umsetzer。
    • EP0254445A1
    • 1988-01-27
    • EP87305932.3
    • 1987-07-03
    • Galasko, Philip Elliot
    • Kruger, Frans JohannesGalasko, Philip Elliot
    • G01D5/243
    • G01N29/036B60C23/0493G01D5/243G01K7/34G01L9/0008G01L17/00G01N2291/0256
    • A passive electrically operable monitoring means has an inherent resistance and a characteristic capacitance and inductance only, so that the monitoring means has a predetermined natural frequency of oscillation. Variations in a physical parameter being monitored by the monitoring means will cause the characteristic capacitance and/or inductance to vary thereby varying the natural frequency of oscillation of the monitoring means. A transducer includes an excitation means (32) for exciting the monitoring means and a sensing means for sensing the natural frequency of oscillation of the monitoring means. The excitation means (32) includes a pulse generating means for exciting the monito­ring means with a string of pulses having a repetition rate suitably lower than the natural frequency of oscillation of the monitoring means so that damped oscillations occur in the monito­ring means.
    • 无源电动可操作的监测装置仅具有固有电阻和特性电容和电感,使得监测装置具有预定的固有振荡频率。 由监视装置监视的物理参数的变化将导致特性电容和/或电感变化,从而改变监视装置的固有振荡频率。 换能器包括用于激励监视装置的激励装置(32)和用于感测监视装置的固有振荡频率的感测装置。 励磁装置(32)包括脉冲产生装置,用于以一串脉冲激励监测装置,该脉冲串具有适当地低于监测装置的固有振荡频率的重复频率,从而在监测装置中发生阻尼振荡。
    • 22. 发明公开
    • SENSOR APPARATUS
    • 传感器。
    • EP0211901A1
    • 1987-03-04
    • EP86901278.0
    • 1986-02-10
    • Sensor Technologies, Inc.
    • Fiori, David, Jr.
    • G01D5
    • G01D5/243
    • Un appareil capteur sans contact possède deux circuits résonnants parallèles (12a, 16; 12b, 16), à l'aide duquel on peut obtenir une indication de la position de la partie mobile du capteur (14) en mesurant les fréquences de résonance relatives des deux circuits de réservoir. Au fur et à mesure que la partie mobile du capteur (14) change de position, les fréquences de résonance relatives des deux circuits résonnants parallèles (12a, 16; 12b, 16) changent. Les sorties des deux circuits résonnants parallèles (12a, 16; 12b, 16) sont associées par multiplexage et excitent un générateur d'impulsions (18) qui crée une première série d'impulsions ayant un taux de répétition correspondant à la fréquence de résonance de l'un des circuits résonnants parallèles (12a, 16; 12b, 16) et une deuxième série d'impulsions ayant un taux de répétition correspondant à la fréquence de résonance de l'autre circuit résonnant parallèle (12a, 16; 12b, 16). Les temps relatifs requis pour compter le même nombre d'impulsions de chaque série d'impulsions donnent une indication de la position de la pièce mobile du capteur (14).
    • 23. 发明公开
    • Apparatus for digital position measurements
    • 数字位置测量装置。
    • EP0009339A1
    • 1980-04-02
    • EP79301777.3
    • 1979-08-30
    • OLIVETTI CONTROLLO NUMERICO S.p.A.
    • Lauro, Luciano
    • G01D5/243H03K13/02H03K13/11
    • G01D5/243H03M1/38
    • For each axis, a cyclic transducer has a scale supplied with a sinusoidal signal from a timing unit and a cursor which provides two output signals which are proportional to the sine and to the cosine, within the elementary interval of the transducer. Sineα and cosu and the corresponding inverted signals are supplied to squaring circuits and logic which generates a three-bit number in a register defining the octant (000 to 111, i.e. 0 to 7) within which a lies. The three-bit number controls multiplexers (32 and 33) each having inputs for quadrants (0 to 7) and feeding respective sample and hold circuits (34 and 36) whose signals are NUM and DEN. The multiplexer inputs are so selected from sinα, cosα, sina and cosa that is |tanα| in octants (0, 2, 4, 6) and is |cotα| in octants (1, 3, 5, 7). is thus always positive and in the range (0 to 1). An analog- to-digital converter system (40) forms the digital value n = and n along with the lowest order octant bit address a ROM (41) which outputs the value of a within the range of a quadrant. A microprocessor (42) responds to the higher two bits to add K where K = 0, 1, 2 or 3 so as to create the final value of α. The microprocessor also keeps count of the integral displacements of elementary intervals. The apparatus enables a to be determined instantaneously, thereby eliminating the following error of known apparatuses when a is changing.
    • 24. 发明公开
    • Verfahren zur digitalen Interpolation einer Periode eines dreiphasigen Analogsignals
    • 一种用于在周期的三相模拟信号的数字内插​​方法。
    • EP0006492A1
    • 1980-01-09
    • EP79101775.9
    • 1979-06-05
    • CONTRAVES AG
    • Guenin, Albert, Dipl.-El.-Ing.ETH
    • G08C19/48G01D5/243G01R25/00
    • G08C19/48G01D5/243G01R25/00
    • Die Werte der drei Komponenten des Analogsignals werden mit Null sowie zu zweien untereinander verglichen. Jeder möglichen Kombination der Vergleichsergebnisse wird im Bereich der Phasenargumente des Analogsignals je eine Zone zugeordnet, woraus sich eine Grob-Interpolation einer Periode des Analogsignals in Zonen ergibt. Die Komponenten werden digitalisiert und es werden die Komponenten mit dem kleinsten (X), dem mittleren (Y) und dem grössten (Z) Absolutwert ausgewählt. Es werden die digitalen Funktionen H = Y - X und K = Z - Y + X gebildet. Jeder möglichen Kombination (H, K) wird je eine bestimmte Anzahl Schritte des Phasenarguments innerhalb der Zone zugeordnet, woraus sich eine Fein-Interpolation der Zone in Schritte ergibt. Vorzugsweise wird anfangs von jeder analogen Komponente ein Drittel der Summe der drei Komponenten abgezogen.
      Das Verfahren wird insbesondere zur Interpolation von dreiphasigen Meßsignalen aus Fotozellen bei der Winkelmeßung in Flugbahnvermessungs-Theodoliten angewendet.
    • 模拟信号的三个分量的值将与零比较并彼此两两。 比较结果的任何可能的组合中的根据一个区中的模拟信号的相位参数的字段被分配,从而产生一个时期在区域中的模拟信号的结果的粗略的内插。 这些组件被数字化并且将被选择具有最小(X)组分的绝对值,中心(Y)和最大(Z)。 还有,数字函数H = Y - Y + X形成 - X和K = Z. 每个可能的组合(H,K)的每个被分配一定数量的区域内相角参数的步骤,从而导致在步骤区域结果的精插补。 优选地,这三种组分的总和的每一个模拟分量的三分之一被初始剥离。 该方法特别适用于三相检测信号中的所述Winkelmeßung在轨迹测量经纬仪的内插从光电池。
    • 29. 发明公开
    • INDUCTIVE POSITION-DETECTING DEVICE
    • VORRICHTUNGFÜRINDUKTIVE POSITIONSERKENNUNG
    • EP3009804A4
    • 2017-03-22
    • EP14811621
    • 2014-06-13
    • AMITEQ CO LTD
    • GOTO DAISUKESAKAMOTO KAZUYASAKAMOTO HIROSHIYUASA YASUHIRO
    • G01D5/20G01B7/00G01D5/22
    • G01D5/2258G01B7/003G01D5/2216G01D5/2275G01D5/2291G01D5/243G01R27/2611
    • A coil section (10) includes a primary coil (11) which is magnetically excitable by an AC signal, and secondary coils (12 - 15) which are provided so as to generate an inductive output in response to excitation of the primary coil. A self-oscillation circuit (20), including an inductance element and a capacitor, has incorporated therein the primary coil (11) as the inductance element for self-oscillation. A target section (1) is provided in such a manner that its relative position to the coil section (10) varies according to a position of a target of detection, and the target section includes a magnetically responsive member disposed so that inductance of the secondary coils (12 - 15) is varied according to the relative position. Amplitude levels of the output signals of the secondary coils (12 - 15) are extracted, and position data of the position of the target of detection is obtained on the basis of these amplitude levels.
    • 线圈部分(10)包括由AC信号磁激励的初级线圈(11)和次级线圈(12-15),其被设置成响应于初级线圈的激励而产生感应输出。 包括电感元件和电容器的自振荡电路(20)在其中并入作为用于自振荡的电感元件的初级线圈(11)。 目标部分(1)设置成使得其相对于线圈部分(10)的相对位置根据检测目标的位置而变化,并且目标部分包括磁响应部件,其被设置成使得次级 线圈(12-15)根据相对位置而变化。 提取次级线圈(12-15)的输出信号的幅度电平,并且基于这些振幅电平获得检测目标的位置的位置数据。
    • 30. 发明公开
    • FREQUENCY READOUT GYROSCOPE
    • FREQUENZAUSLESEGYROSKOP
    • EP2932192A4
    • 2016-08-10
    • EP13863507
    • 2013-12-12
    • UNIV CALIFORNIA
    • IZYUMIN IGORBOSER BERNHARD EKLINE MITCHELL H
    • G01C19/56G01C19/5755G01C19/5776
    • G01C19/5776G01C19/5755G01D5/243
    • A frequency readout gyroscope is provided, having 2 or 3 axes, in which the frequency of the carrier associated with the oscillation of the proof mass changes while the amplitude stays constant. The invention departs from conventional gyroscopes which rely on measuring transducer sense axis displacement (amplitude modulation) to determine angular input rate. The invention utilizes what could be termed a form of frequency modulation, such as evaluating frequency phase difference between the axes of modulation. Examples include gyroscopes having either a quadrature or Lissajous FM mode of operation, in which angle random walk contribution from the electronics is reduced by approximately two orders of magnitude.
    • 提供了具有2或3轴的频率读出陀螺仪,其中与振动的振荡相关联的载体的频率在振幅保持恒定的同时变化。 本发明离开常规陀螺仪,其依赖于测量换能器感测轴位移(幅度调制)以确定角度输入速率。 本发明利用可以被称为频率调制的形式,例如评估调制轴之间的频率相位差。 示例包括具有正交或者李萨如FM操作模式的陀螺仪,其中来自电子装置的角度随机游走贡献减少了大约两个数量级。