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41. 发明授权

US5343146A Combination coating thickness gauge using a magnetic flux density sensor and an eddy current search coil 失效
标题翻译：使用磁通密度传感器和涡流搜索线圈的组合涂层厚度计
公开(公告)号：US5343146A
公开(公告)日：1994-08-30
申请号：US956280
申请日：1992-10-05
申请人： Frank J. Koch , Leon C. Vandervalk , David J. Beamish
发明人： Frank J. Koch , Leon C. Vandervalk , David J. Beamish
IPC分类号： G01B7/00 , G01B7/06 , G01D3/028 , G01D5/20 , G01K13/00 , G01N27/72 , G01R33/12 , G01B7/10
CPC分类号： G01B7/105
摘要： A gauge probe for a handheld combination coating thickness gauge allows the combination coating thickness gauge to measure both nonferrous coatings on ferrous substrate and nonconductive coatings on conductive nonferrous substrate. The gauge probe enables the combination coating thickness gauge to determine automatically, with a single probe, the substrate characteristics, and to effect a measurement of the coating thickness on that substrate. The technique used to measure coatings on a ferrous substrate utilizes a permanent magnet to provide a constant magnetic flux and a Hall sensor and thermistor arranged to measure the temperature-compensated magnetic flux density at one of the poles of the permanent magnet. The flux density at the magnet pole can be related to a nonferrous coating thickness on a ferrous substrate. The technique used to measure nonconductive coatings on a conductive nonferrous substrate utilizes eddy current effects. A coil near the gauge probe tip is excited by an alternating current oscillating between about 6 MHz and about 12 MHz. The coil sets up eddy currents on the surface of the conducting substrate. The resulting eddy currents set up an opposing magnetic field which in turn have an effect on the excited coil. The eddy current effects on the coil are quantified, and the degree of the eddy current effects on the coil are related to the nonconductive coating thickness on a conductive substrate. The gauge probe detects the substrate type and automatically determines the coating thickness on the detected substrate.
摘要翻译：用于手持组合涂层厚度计的测量探头允许组合涂层厚度计测量有色金属基底上的有色涂层和导电有色基底上的非导电涂层。量规探头使得组合涂层厚度计可以通过单个探针自动确定基底特性，并对该基底上的涂层厚度进行测量。用于测量含铁基底上的涂层的技术利用永久磁铁提供恒定的磁通量，霍尔传感器和热敏电阻被布置成测量永久磁体的一个磁极处的温度补偿磁通密度。磁极处的磁通密度可以与铁基底上的有色涂层厚度有关。用于测量导电有色基底上非导电涂层的技术采用涡流效应。靠近测量头探头的线圈由约6MHz至约12MHz之间的交流振荡激发。线圈在导电基板的表面上设置涡流。所产生的涡流设置相反的磁场，这又对激励的线圈产生影响。量化线圈上的涡流效应，并且涡流对线圈的影响程度与导电衬底上的非导电涂层厚度有关。量规探头检测基板类型，并自动确定检测到的基板上的涂层厚度。

42. 发明授权

US5332965A Contactless linear angular position sensor having an adjustable flux concentrator for sensitivity adjustment and temperature compensation 失效
标题翻译：非接触式线性角位置传感器，具有可调式磁通集中器，用于灵敏度调节和温度补偿
公开(公告)号：US5332965A
公开(公告)日：1994-07-26
申请号：US902075
申请日：1992-06-22
申请人： Ronald J. Wolf , Larry Hedeen
发明人： Ronald J. Wolf , Larry Hedeen
IPC分类号： F02D9/00 , F02D35/00 , G01B7/00 , G01B7/30 , G01D3/02 , G01D3/028 , G01D3/036 , G01D5/14 , G01B7/14 , G01R35/00
CPC分类号： G01D3/02 , G01D3/0365 , G01D5/145
摘要： An angular position sensor for sensing the angular position of a pivotally mounted device includes a magnetically sensitive device, such as a Hall effect IC, and a plurality of flux concentrators, rigidly disposed relative to the Hall effect IC, forming an assembly. The assembly is disposed in a housing a fixed distance from a rotatably mounted standard magnet defining a fixed air gap therebetween. The magnet is disposed in rotatably mounted magnet holder which also acts as a drive arm that is adapted to be mechanically coupled to a pivotally mounted device. The configuration of the flux concentrators assembled to the magnetically sensitive device cause the output of the Hall effect IC to be generally linear. In order to avoid problems associated with electrically adjustable angular position sensors, the angular position sensor in accordance with the present invention is adjusted mechanically. In particular, a flux concentrator, preferably having a halo shape, is disposed adjacent the magnet. The sensor is calibrated by varying the distance between the halo-shaped flux concentrator and the magnet. In one embodiment of the invention, the halo-shaped flux concentrator is formed to provide temperature compensation for the sensor. The sensor is hermetically sealed and is thus unaffected by wear or vibration.
摘要翻译：用于感测枢转安装的装置的角位置的角度位置传感器包括一个磁性敏感装置，例如霍尔效应IC，以及相对于霍尔效应IC刚性地布置的多个磁通集中器。组件设置在与可旋转地安装的标准磁体固定距离的壳体中，在其间限定了固定的气隙。磁体设置在可旋转地安装的磁体保持器中，其也用作驱动臂，该驱动臂适于机械地联接到枢转安装的装置。组装到磁敏装置上的集流器的配置使得霍尔效应IC的输出通常是线性的。为了避免与电动可调角度位置传感器相关的问题，机械地调节了根据本发明的角度位置传感器。特别地，优选具有卤素形状的通量集中器设置在磁体附近。传感器通过改变卤素状集中器与磁铁之间的距离进行校准。在本发明的一个实施例中，形成了卤素状磁通集中器，以为传感器提供温度补偿。传感器密封，因此不受磨损或振动的影响。

43. 发明授权

US5239283A Circuit arrangement for compensating for the influence of temperature on coil quality 失效
标题翻译：用于补偿温度对线圈质量的影响的电路布置
公开(公告)号：US5239283A
公开(公告)日：1993-08-24
申请号：US901385
申请日：1992-06-19
申请人： Bernhard Wiesgickl
发明人： Bernhard Wiesgickl
IPC分类号： G01D3/028 , G01D3/036 , G01R27/02
CPC分类号： G01D3/036
摘要： To compensate for the temperature dependence of a resonant circuit, it is known to use an a.c. current source, with which the resonant circuit is excited in dependence upon the ohmic resistance of the coil conductor material. The task of compensating for temperature may to be solved without a costly closed-loop control process and with few losses. A magnetically coupled second coil is connected in parallel with the first coil to be compensated, and an NTC thermistor is connected in series with one of the two coils so that the series connection is connected in parallel with the other of the two coils. The NTC thermistor is selected so that, in conjunction with the two variable sized ohmic resistors of the two coils, the circuit arrangement has a specified total ohmic resistance, which is substantially independent of temperature.
摘要翻译：为了补偿谐振电路的温度依赖性，已知使用a.c. 电流源，谐振电路根据线圈导体材料的欧姆电阻而被激发。补偿温度的任务可以在没有昂贵的闭环控制过程并且几乎没有损失的情况下得到解决。磁耦合第二线圈与要补偿的第一线圈并联连接，并且NTC热敏电阻与两个线圈中的一个串联连接，使得串联连接与两个线圈中的另一个并联连接。选择NTC热敏电阻，使得与两个线圈的两个可变尺寸的欧姆电阻器相结合，电路装置具有特定的总欧姆电阻，其基本上与温度无关。

44. 发明授权

US5187475A Apparatus for determining the position of an object 失效
标题翻译：用于确定物体的位置的装置
公开(公告)号：US5187475A
公开(公告)日：1993-02-16
申请号：US712863
申请日：1991-06-10
申请人： Thomas J. Wagener , Paul E. Bjork , James E. Lenz
发明人： Thomas J. Wagener , Paul E. Bjork , James E. Lenz
IPC分类号： G01B7/00 , G01D3/028 , G01D5/22
CPC分类号： G01D3/028 , G01B7/003 , G01D5/22
摘要： A position sensor is provided which incorporates the first and second magnetic members which are attached to an object whose position is to be determined. First and second magnetic sensors are disposed at positions in association with the two magnetic members. As the object moves along a predetermined path, the first and second magnetic members dispose a predetermined amount of magnetic material in the zones of the two sensors. By measuring the changing impedance of the winding of one of the sensors and comparing that value to the impedance of the winding of the other sensor, corrections can be made to determine the position of the object notwithstanding the fact that external effects may have changed the conditions under which the measurements are being taken. For example, gaps between the magnetic members and the sensors can possibly change from one time to another or the ambient temperature surrounding the sensors and the magnetic members could have changed. By comparing the values of the two sensor readings, these variabilities can be factored out of the determination and the accurate position of the object can be measured.
摘要翻译：提供了一种位置传感器，其包括附接到要确定其位置的物体的第一和第二磁性构件。第一和第二磁性传感器设置在与两个磁性构件相关联的位置处。当物体沿预定路径移动时，第一和第二磁性构件在两个传感器的区域中设置预定量的磁性材料。通过测量其中一个传感器的绕组的变化的阻抗并将该值与另一个传感器的绕组的阻抗进行比较，可以进行校正来确定对象的位置，尽管外部影响可能改变了条件正在进行测量。例如，磁性构件和传感器之间的间隙可能会从一个时间改变到另一个，或者传感器周围的环境温度和磁性构件可能已经改变。通过比较两个传感器读数的值，可以将这些变量除以确定之外，并且可以测量对象的准确位置。

45. 发明授权

US5150049A Magnetostrictive linear displacement transducer with temperature compensation 失效
标题翻译：具有温度补偿的磁致伸缩线性位移传感器
公开(公告)号：US5150049A
公开(公告)日：1992-09-22
申请号：US719484
申请日：1991-06-24
申请人： John L. Schuetz
发明人： John L. Schuetz
IPC分类号： F15B15/28 , G01B7/02 , G01B17/00 , G01D3/028
CPC分类号： G01B7/02 , F15B15/2861 , F15B15/2884 , F15B15/2892 , G01B17/00 , G01D3/028
摘要： A method and apparatus for correcting thermally induced errors in the operation of a magnetostrictive linear displacement transducer used to monitor the piston position in a hydraulic cylinder. The transducer includes a processing head on one end of the cylinder, a waveguide extending from the processing head and a permanent magnet which encircles the waveguide and travels with the piston. Temperature compensation is provided by a washer which is beveled on its outside edge and a pair of rings which are beveled to mate with the bevels on the washer. The rings have a lower coefficient of thermal expansion than the washer to effect axial shifting of the magnet when the temperature changes in order to compensate for speed change in the waveguide signals with temperature changes.
摘要翻译：一种用于校正用于监测液压缸中的活塞位置的用于磁致伸缩线性位移传感器的操作中的热致误差的方法和装置。换能器包括在气缸一端的处理头，从处理头延伸的波导和环绕波导并与活塞一起行进的永磁体。温度补偿由在其外边缘上倾斜的垫圈和一对斜面提供，该垫圈被倾斜以与垫圈上的斜面相配合。这些环具有比垫圈更低的热膨胀系数，以在温度变化时实现磁体的轴向移动，以补偿波导信号随着温度变化的速度变化。

46. 发明授权

US5059916A Gauge driver for use with a remote sensor and having reduced offset potential response 失效
标题翻译：用于远程传感器并具有减少偏移电位响应的量规驱动器
公开(公告)号：US5059916A
公开(公告)日：1991-10-22
申请号：US462174
申请日：1990-01-08
申请人： Nick M. Johnson
发明人： Nick M. Johnson
IPC分类号： G01D3/028 , G01D3/02 , G01D5/16 , G01R1/28 , G01R5/16 , G01R7/06 , G01R15/00
CPC分类号： G01D5/16 , G01R7/06
摘要： A gauge circuit for use with a wide angle air core meter display having high linearity and adapted for use with a remote sensing resistor. A constant sense current is provided and its value is moudlated at a frequency that is high with respect to the frequencies associated with offset voltages that occur with a sense resistor that is grounded remotely from the gauge ground. A low duty cycle pulse modulation shape is disclosed for the purpose of minimizing electromagnetic interference radiation.

47. 发明授权

US4926123A Precision variable pitch compensation winding for displacement transducer 失效
标题翻译：用于位移传感器的精密可变螺距补偿绕组
公开(公告)号：US4926123A
公开(公告)日：1990-05-15
申请号：US332394
申请日：1989-03-31
申请人： Robert W. Redlich
发明人： Robert W. Redlich
IPC分类号： G01D3/028 , G01D5/20
CPC分类号： G01D3/028 , G01D5/202 , Y10T29/49071
摘要： A compensation winding for improving the linearity of a displacement transducer. The displacement transducer is the type having an electrically conducting non-ferromagnetic wall which moves in telescoping relation with the coil and is excited by a signal at a sufficiently high frequency that skin effect on the wall permits displacement of the wall to vary the reluctance of the coil flux path and thereby vary its inductance proportionally to displacement of the wall. The compensation winding is wound in telescoped, coaxial relationship to the coil in a fixed position. The compensation winding has a pitch which is a decreasing function of the distance from the end of the coil which is nearest the wall when the wall and the coil are in their least overlapping relationship.
摘要翻译：一种补偿绕组，用于提高位移传感器的线性度。位移传感器是具有导电非铁磁壁的类型，其与线圈伸缩关系地移动，并且以足够高的频率被信号激发，使得在壁上的皮肤效应允许壁的位移以改变磁阻的磁阻线圈磁通路径，从而使其电感与壁的位移成比例地变化。补偿绕组以固定位置与线圈以可伸缩的同轴关系缠绕。补偿绕组具有间距，该距离是当壁和线圈处于最小重叠关系时离线圈最靠近墙壁的距离的减小函数。

48. 发明授权

US4888818A Method and apparatus for the determination of the setting process in an inorganic aqueous binder system 失效
标题翻译：用于确定无机水性粘合剂体系中的凝固过程的方法和装置
公开(公告)号：US4888818A
公开(公告)日：1989-12-19
申请号：US43835
申请日：1987-04-28
申请人： Wolfgang Schmitt , Dietmar Bege
发明人： Wolfgang Schmitt , Dietmar Bege
IPC分类号： G01D1/10 , G01D3/028 , G01N27/00 , G01N27/04 , G01N33/38
CPC分类号： G01N33/383 , G01N27/04
摘要： A method for the determination of the setting process in an inorganic aqueous binder system, in that the electrical conductivity is constantly measured in the binder system, in that the variation of the electrical conductivity is differentiated according to time, in that the variation of the first derivative of the conductivity is monitored, and in that the temperature in the binder system is continously measured and the temperature dependence of the electrical conductivity is eliminated by means of the measured temperature values.
摘要翻译：一种用于确定无机水性粘合剂体系中的凝固过程的方法，其中在粘合剂体系中不断地测量导电性，因为电导率的变化根据时间而不同，因为第一监测电导率的导数，并且连续测量粘合剂体系中的温度，并通过测量的温度值消除导电性的温度依赖性。

49. 发明授权

US4883992A Temperature compensated voltage generator 失效
标题翻译：温度补偿电压发生器
公开(公告)号：US4883992A
公开(公告)日：1989-11-28
申请号：US240279
申请日：1988-09-06
申请人： Dennis M. Koglin , Mark B. Kearney
发明人： Dennis M. Koglin , Mark B. Kearney
IPC分类号： G01K7/01 , G01D3/028 , G01D3/036 , G01L19/04
CPC分类号： G01D3/0365 , G01L9/065
摘要： A temperature compensation circuit for a device with a voltage output affected by temperature in a predetermined manner and a null output for which the voltage is zero regardless of temperature comprises a voltage to current converter responsive to the generated voltage to produce a proportional current, a current generator comprising elements responsive to the temperature of the device to generate a pair of compensation currents varying therewith in a predetermined manner so that the ratio of the compensation currents embodies a desired temperature compensation, and a transconductance multiplier effective to multiply the proportional current by the ratio of the compensation currents to generate a compensated output current. It may further comprise a current to voltage converter responsive to the compensated output current to produce a compensated output voltage.

50. 发明授权

US4836027A Circuit for a sensor 失效
标题翻译：传感器电路
公开(公告)号：US4836027A
公开(公告)日：1989-06-06
申请号：US123974
申请日：1987-11-20
申请人： Joachim Hannappel , Thomas Pfeifer
发明人： Joachim Hannappel , Thomas Pfeifer
IPC分类号： G01D3/028 , G01D3/036 , G01D5/18 , G01L19/04 , G01R1/44
CPC分类号： G01D3/0365 , G01L9/065
摘要： In a circuit for a sensor the output signal of which is dependent not only on the variable to be determined but also on the temperature, an amplifier having a temperture-dependent amplification factor is connected to the output of the sensor, and the output of the amplifier is connected to an adder circuit to which a temperature-dependent voltage can be fed. The amplifier is preferably a differential amplifier within the feedback branch of which a temperature-dependent resistor is inserted. The adder circuit is preferably formed by another differential amplifier to the inputs of which the output signal of the differential amplifier with temperature-dependent amplification, the temperature-dependent voltage and a substantially temperature-independent voltage can be fed via resistors.
摘要翻译：在传感器的电路中，其输出信号不仅取决于要确定的变量，而且取决于温度，具有温度依赖性放大因子的放大器连接到传感器的输出，放大器连接到可以馈送温度相关电压的加法器电路。该放大器最好是反馈支路内的一个差分放大器，其中插入有温度依赖电阻器。加法器电路优选地由另一个差分放大器形成为具有温度依赖放大的差分放大器的输出信号，与温度相关的电压和基本上与温度无关的电压的输入，可以通过电阻馈送。

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