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91. 发明授权

US5055782A Method for determining the absolute position of a pointer in an indicating device, and indicating device 失效
标题翻译：用于确定指示装置中的指针的绝对位置的方法，以及指示装置
公开(公告)号：US5055782A
公开(公告)日：1991-10-08
申请号：US531034
申请日：1990-05-31
申请人： Klaus Kronenberg
发明人： Klaus Kronenberg
IPC分类号： G01D7/00 , G01D5/22 , G01D13/22 , G08C19/00
CPC分类号： G01D5/2216
摘要： A method determines the absolute position of a pointer in an indicating device in which the pointer is moved by a rotor (2) of a rotating-field (1) via a gearing (31). An indicating device is also disclosed. Indicating devices with gearing have the problem that no absolute reference between the position of the pointer (33) and the position of the rotor (2) in the rotating-field motor (1) is present when the device is started and the reference is lost. In order to restore the reference, the pointer (33) is moved by a rotating field in a rotating-field motor (1) in a predetermined direction of the rotating field against a stop (34). The rotating field is turned further in the direction of the rotating field. A signal induced in the field-generating part (4, 5) of the rotating-field motor by a movement of the rotor (2) contrary to the direction of the rotating field is detected, and from the angular position of the rotating field upon the occurrence of the induced signal, the angular position of the rotor at which the pointer rests against the stop is determined.
摘要翻译：方法确定指示装置中的指针的绝对位置，其中指针由旋转场（1）的转子（2）经由齿轮（31）移动。还公开了一种指示装置。具有齿轮传动装置的指示装置具有如下问题：当装置启动并且参考丢失时，在指针（33）的位置与转子（2）的位置之间不存在绝对参考，旋转场马达（1）。为了恢复基准，指针（33）通过旋转场马达（1）中的旋转场沿旋转场的预定方向相对于止挡（34）移动。旋转场沿旋转场的方向进一步转动。检测与旋转场方向相反的转子（2）的运动，在旋转场马达的场产生部（4,5）中感应的信号，并从旋转场的角位置确定感应信号的出现，指示器抵靠停止点的转子的角位置。

92. 发明授权

US5015998A Null seeking position sensor 失效
标题翻译：空寻找位置传感器
公开(公告)号：US5015998A
公开(公告)日：1991-05-14
申请号：US391430
申请日：1989-08-09
申请人： George H. Ellis , James C. Kirby
发明人： George H. Ellis , James C. Kirby
IPC分类号： G01B7/00 , G01D5/20 , G01D5/22
CPC分类号： G01D5/2053 , G01D5/2225
摘要： A position sensor includes of two primary sense windings for establishing a forward or drive field, two secondary sense windings in which a voltage may be induced in the presence of the drive field, and at least one conductive screen capable of blocking the magnetic coupling between the primary and secondary sense windings. When the screen blocks the magnetic coupling between one pair of sense windings to the same extent that ti does between the other pair of sense windings, the sensor circuitry generates a marker signal to indicate the position of the screen.
摘要翻译：位置传感器包括用于建立正向或驱动场的两个初级感测绕组，其中在存在驱动场的情况下可以感应出电压的两个次级感测绕组和至少一个能够阻挡初级和次级感应绕组。当屏幕将一对感测绕组之间的磁耦合阻挡到另一对感测绕组之间的相同程度时，传感器电路产生标记信号以指示屏幕的位置。

93. 发明授权

US4887465A Transducers for hostile environments 失效
标题翻译：恶劣环境的传感器
公开(公告)号：US4887465A
公开(公告)日：1989-12-19
申请号：US49578
申请日：1987-05-14
申请人： John V. Bryne , Francis McMullin
发明人： John V. Bryne , Francis McMullin
IPC分类号： G01D5/20 , G01D5/22 , G01D11/24
CPC分类号： G01D11/245 , G01D5/2225
摘要： A screened inductance level transducer has a drive winding for setting up a drive field, and a sense winding in which voltage is induced in the presence of the drive field. A conductive screen, which may be of stainless steel, is mounted on a float for movement in response to liquid level. In the presence of the screen, eddy currents are generated to establish a counter-field opposing the drive field and to thereby shade the sense winding to vary the voltage induced in it. The screen is contained within a tubular barrier which may also be of stainless steel, and the windings are located outside the barrier. In this way, the region within which liquid level is to be measured is isolated from the environment to the exterior of the unit, thus facilitating its use for recording liquid levels in hostile conditions.

94. 发明授权

US4833352A Linear inductive transducer 失效
标题翻译：线性感应传感器
公开(公告)号：US4833352A
公开(公告)日：1989-05-23
申请号：US209067
申请日：1988-06-20
申请人： Geoffrey L. Heathcote
发明人： Geoffrey L. Heathcote
IPC分类号： H01F7/16 , G01D5/22
CPC分类号： G01D5/22
摘要： A linear inductive transducer includes a cylindrical former about which is wound a winding. Surrounding the former is a magnetic sleeve having external flange means which is located against an end face of a first casing part. A core member is slidable within a bore in the former and the former has a head located against an end of the sleeve. A second casing part is located about the first casing part and defines a space in which the head is located. The space is filled with a synthetic resin which secures the casing parts together and retains the head in engagement with the sleeve and the flange means in engagement with the first casing part.

95. 发明授权

US4644570A Sensor amplification and enhancement apparatus using digital techniques 失效
标题翻译：使用数字技术的传感器放大和增强装置
公开(公告)号：US4644570A
公开(公告)日：1987-02-17
申请号：US778230
申请日：1985-09-20
申请人： Amnon Brosh , Wolf S. Landmann
发明人： Amnon Brosh , Wolf S. Landmann
IPC分类号： G01D5/22 , G01D5/243 , G01M3/00
CPC分类号： G01D5/243
摘要： There is disclosed a digital enhancement circuit which responds to the complementary inductance provided by a planar coil sensor which inductance varies in a complementary manner according to the position of a movable member associated with the planar coil configuration. The complementary inductance is coupled to an oscillator whereby the period of the oscillator is varied in a first mode according to a first inductance value and in a second mode according to a second inductance value. These signals are then processed by means of digital processing circuitry to develop a signal indicative of the difference of the periods as divided by the sum of the periods. This signal is a ratiometric signal, and by employing digital counters, one can provide an output signal having a predetermined gain factor and having the above noted ratiometric characteristic which signal is indicative of the position of the movable member as further enhanced by the gain factor.
摘要翻译：公开了一种数字增强电路，其响应由平面线圈传感器提供的互补电感，该电感根据与平面线圈配置相关联的可移动部件的位置以互补的方式变化。互补电感耦合到振荡器，由此振荡器的周期根据第一电感值以第一模式变化，并且根据第二电感值在第二模式中变化。然后，这些信号通过数字处理电路进行处理，以产生一个表示周期差异的信号除以周期的总和。该信号是比例信号，并且通过采用数字计数器，可以提供具有预定增益因子的输出信号，并且具有上述比率特性，该信号表示可移动部件的位置，由增益因子进一步增强。

96. 发明授权

US4642595A Contactless electric control-handle 失效
标题翻译：非接触式电控手柄
公开(公告)号：US4642595A
公开(公告)日：1987-02-10
申请号：US726690
申请日：1985-04-24
申请人： Geurt J. Ruumpol
发明人： Geurt J. Ruumpol
IPC分类号： G06F3/033 , G01B7/00 , G01B7/30 , G01D5/12 , G01D5/22 , G05B24/00 , H01F21/06
CPC分类号： G01D5/2258
摘要： A contactless electric control handle having a field coil for forming an electro-magnetic field, inductive pick-up coils angularly spaced apart around the axis of the field. The rod of the control handle constitutes the core of the field coil. The field coil and the pick-up coils have the shape of annular, concentric conductors, whereas ferrite is applied to the rod in order to employ high frequencies up to 1 MHz.
摘要翻译：具有用于形成电磁场的励磁线圈的非接触电控制手柄，围绕磁场轴线成角度间隔开的感应拾取线圈。控制手柄的杆构成励磁线圈的核心。励磁线圈和拾波线圈具有环形同心导体的形状，而将铁素体施加到杆上以便使用高达1MHz的高频。

97. 发明授权

US4574286A Controller of magnetically saturated type having programmed output characteristic 失效
标题翻译：具有编程输出特性的磁饱和型控制器
公开(公告)号：US4574286A
公开(公告)日：1986-03-04
申请号：US470165
申请日：1983-02-28
申请人： Herman J. Andresen
发明人： Herman J. Andresen
IPC分类号： G01D5/22 , G08C19/06 , G05G9/00 , H01H19/00
CPC分类号： G01D5/22 , Y10T74/20012
摘要： A position sensor for producing a variable electrical output signal in response to manipulation of a quadrant lever or the like. A pair of tubes of equal length made of magnetically saturable material are secured to a frame in parallel proximity to a sheet-like permanent magnet which is mounted on a carrier. The magnet has a pair of active angled edges and the tubes are oriented to transversely intersect the respective angled edges, being so spaced from one another that the tubes are magnetically saturated over complementary fractions of their length. Each tube is engaged by at least one turn of wire and a detector circuit is provided having its input connected to the turns of wire for producing an electrical output signal in accordance with the differential magnetic saturation of the tubes. Each tube is angled generally transversely with respect to the direction of relative movement. In addition the presented edges of the magnet are angled at such acute angle with respect to the direction of relative movement that, upon such movement the tubes are respectively engaged by successive portions of the angled edges, so that one of the tubes is progressively more saturated in its longitudinal dimension while the remaining tube is progressively less saturated, with the degree of saturation of the tubes in the longitudinal dimension remaining substantially complementary over the range of relative movement. The acute angle is sufficiently shallow so that the range of relative movement substantially exceeds the length dimension of the tubes. The magnet has a reference position with respect to the tubes in which each tube is saturated over such portion of its longitudinal dimension as will result in a zero output signal at the reference position.
摘要翻译：一种用于响应于象限杆等的操纵产生可变电输出信号的位置传感器。由磁性可饱和材料制成的一对等长的管被平行地固定在框架上，该框架安装在载体上的片状永久磁铁。磁体具有一对有效倾斜的边缘，并且管被定向成横向相交于各个成角度的边缘，彼此间隔开，使得管在其长度的互补部分上是磁饱和的。每个管由至少一匝的线接合，并且提供检测器电路，其输入端连接到线圈，以根据管的差动磁饱和度产生电输出信号。每个管相对于相对运动的方向大致横向倾斜。此外，磁体的呈现的边缘相对于相对运动的方向以这样的锐角成角度，在这种移动时，管分别由成角度的边缘的连续部分接合，使得管中的一个逐渐更饱和在其纵向尺寸上，而剩余的管逐渐变得不饱和，在相对运动的范围内，纵向尺寸的管的饱和度保持基本上互补。锐角足够浅，使得相对移动的范围基本上超过管的长度尺寸。磁体相对于管的参考位置，其中每个管在其纵向尺寸的这样的部分上饱和，这将导致在参考位置处的零输出信号。

98. 发明授权

US4467320A Measurement of a linear variable differential transformer signal by phase conversion 失效
标题翻译：通过相位转换测量线性可变差动变压器信号
公开(公告)号：US4467320A
公开(公告)日：1984-08-21
申请号：US375516
申请日：1982-05-06
申请人： Walter J. McPhee
发明人： Walter J. McPhee
IPC分类号： G01D5/22 , G01D5/245 , H03M1/00 , H03K13/00
CPC分类号： G01D5/2291 , H03M1/50 , H03M1/645
摘要： A measurement system for converting the outputs of dissimilar transducers into digital numbers by means of a phase conversion technique. The outputs of a plurality of dissimilar transducers are generated as pairs of amplitude modulated sinusoidal signals. All AM signal pairs are converted into phase modulated signal pairs by a plurality of identical conversion circuits where the phase difference between at least one PM signal pair is linearly related to the measured parameter of the transducer associated therewith. The phase differences for each transducer is converted into a digital number by counting increments of time between the zero crossings of each pair of phase modulated signals and outputting the resulting count to a data buss of a control processor. Transducer parameters which are nonlinearly related to their phase differences are compensated by a correction factor which is calculated by knowing the error between any particular measured input and the linear input.
摘要翻译：一种用于通过相位转换技术将不同换能器的输出转换为数字数字的测量系统。多个不同的换能器的输出被产生成一对调幅正弦信号。通过多个相同的转换电路将所有AM信号对转换成相位调制信号对，其中至少一个PM信号对之间的相位差与与之相关的换能器的测量参数线性相关。通过计数每对相位调制信号的过零点之间的时间增量，将每个换能器的相位差转换为数字数字，并将结果计数输出到控制处理器的数据总线。与其相位差非线性相关的传感器参数通过校正因子进行补偿，校正因子通过了解任何特定测量输入和线性输入之间的误差来计算。

99. 发明授权

US4365517A Linear differential foucault current detector serving for measuring small displacements of a metallic element 失效
标题翻译：用于测量金属元件的小位移的线性微分傅立叶电流检测器
公开(公告)号：US4365517A
公开(公告)日：1982-12-28
申请号：US224506
申请日：1980-11-12
申请人： Francois Ramel , Alain Rousseau
发明人： Francois Ramel , Alain Rousseau
IPC分类号： G01B7/00 , G01D5/20 , G01D5/22 , G01L9/00 , G01L9/10
CPC分类号： G01L9/0036 , G01D5/202 , G01D5/2291 , G01L9/007 , G01L9/105
摘要： Detector comprising two windings (1,2) disposed in two ferrite half-pots (3,4) opposite to two non-ferromagnetic metallic elements (5,6) one at least of which is movable. A pulse generator (9) feeds the two windings through resistances (7,8) coupled to a reference potential.Two circuits (10,11) detect the peak values of the resultant signals at the common points between the windings and their charging resistance. An operational amplifier (12) creates the difference of these peak values. A diode (13) permits the discharge of the windings through the resistances (7,8).Application to detectors of differential pressure, and to devices for the measurement of displacements.
摘要翻译： PCT No.PCT / FR80 / 00034 Sec。 371日期：1980年11月12日 102（e）1980年11月10日PCT PCT公布1980年3月11日PCT公布。出版物WO80 / 01951 日期：1980年9月18日。检测器包括两个绕两个铁氧体半锅（3,4）组成的绕组（1,2），两个铁氧体半锅（3,4）与两个非铁磁金属元件（5,6）相对，其中至少一个是可移动的。脉冲发生器（9）通过耦合到参考电位的电阻（7,8）馈送两个绕组。两个电路（10,11）检测绕组之间的公共点和其充电电阻之间的结果信号的峰值。运算放大器（12）产生这些峰值的差值。二极管（13）允许绕组通过电阻（7,8）放电。应用于差压检测器，以及用于测量位移的装置。

100. 发明授权

US4345230A Multiple rotary variable differential transformer on common shaft with leakage flux compensation 失效
标题翻译：共轴多回转可变差动变压器，漏磁补偿
公开(公告)号：US4345230A
公开(公告)日：1982-08-17
申请号：US230337
申请日：1981-02-02
申请人： Jacob Chass
发明人： Jacob Chass
IPC分类号： G01D5/22 , H01F21/06
CPC分类号： H01F21/06 , G01D5/2291
摘要： A rotary variable differential transformer is provided comprising a pair of RVDT units disposed along a common shaft. A third RVDT is positioned along the shaft between the two units. The third RVDT comprises two pairs of secondary coils each pair being connected in series opposition. One of the coil pairs is connected to the secondary coils of one of the RVDT units and the other pair is connected to the secondary coils of the other RVDT unit. The third RVDT unit does not contain a primary and its secondary coils are excited only by the leakage flux from the other units.
摘要翻译：提供一种旋转可变差动变压器，包括沿公共轴设置的一对RVDT单元。第三个RVDT沿着两个单元之间的轴定位。第三个RVDT包括两对次级线圈，每对二次线圈串联连接。线圈对中的一个连接到一个RVDT单元的次级线圈，另一对连接到另一个RVDT单元的次级线圈。第三个RVDT单元不包含初级绕组，其次级线圈仅由来自其他单元的漏磁通激励。

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