公开(公告)号：US20040245442A1

公开(公告)日：2004-12-09

申请号：US10483971

申请日：2004-07-23

发明人： Alexander Gruber ,  Michael Hermann ,  Wolfgang Holzapfel ,  Markus Kuhler ,  Herbert Pronold ,  Sebastien Tondorf

IPC分类号： G01D005/34

CPC分类号： G01D5/366 ,  G01D5/2457 ,  G01D5/38

摘要： A position measuring device having a scanning device and a scale, wherein the scanning device is movable in relation to the scale in a measuring direction. The scale including a measuring graduation, wherein periodic measuring signals are generated when the scanning device scans the measuring graduation and a reference marking, wherein a reference marking signal is generated when the scanning device scans the reference marking with a scanning beam bundle. The scale further includes a first optically scannable area marking next to the reference marking and a second optically scannable area marking next to the reference marking and which has a different optical deflection property than the first optically scannable area marking, wherein photoelectric scanning of the first and second optically scannable area markings with the scanning beam bundle from the scanning device generates an area signal that differentiates characteristics of the first and second optically scannable area markings. A first photo-receiver receives light from the first optically scannable area marking and a second photo-receiver receives light from the second optically scannable area marking.

公开(公告)号：US20040238727A1

公开(公告)日：2004-12-02

申请号：US10489694

申请日：2004-03-15

发明人： Fumio Kokubo ,  Keiji Sakai ,  Tetsuo Ueyama ,  Renzaburo Miki

IPC分类号： G01D005/34

CPC分类号： G11B7/13927 ,  G01B11/26 ,  G11B7/0956 ,  G11B7/131 ,  G11B7/1353 ,  G11B7/1367 ,  G11B7/1381

摘要： The object of the invention is to accurately detect the amount of tilt in the light reflector to the optical axis of an output light with a simple configuration. A tilt sensing apparatus includes a light reflector, a light source, a condensing unit for condensing an output light from the light source onto the light reflector, and a light sensing unit for sensing the reflected light from the light reflector. An optical device provided in the condensing unit for varying the light quantity of the transmitting light has first and second optical device strips that are formed at the positions of axial symmetry about the optical axis and have a predetermined shift in the direction of a straight line of connecting the axis of the light reflector to the condensed position where the light emitted from the light source is condensed onto the light reflector by the condensing unit.

摘要翻译： 本发明的目的是以简单的结构准确地检测光反射器中的输出光的光轴的倾斜量。 倾斜感测装置包括光反射器，光源，用于将来自光源的输出光聚光到光反射器上的聚光单元，以及用于感测来自光反射器的反射光的光感测单元。 设置在聚光单元中用于改变透射光的光量的光学装置具有第一和第二光学装置条，该光学装置条形成在围绕光轴的轴对称位置处，并且具有在直线方向上的预定偏移 将光反射器的轴线连接到从光源发射的光被冷凝单元聚光到光反射器上的聚光位置。

公开(公告)号：US20040227066A1

公开(公告)日：2004-11-18

申请号：US10768986

申请日：2004-01-30

发明人： Walter Huber ,  Udo Linnemann ,  Wolfgang Holzapfel

IPC分类号： G01D005/34

CPC分类号： G01D5/38 ,  G01D5/366

摘要： A position measuring system that includes a scale having an incremental graduation track of a defined incremental graduation period and on at least one defined reference position, a reference marking field with a mean reference marking graduation period. A scanning unit movable with respect to the scale, the scanning unit having a plurality of scanning elements for generating scanning signals, wherein at least two phase-shifted incremental signals are generated as scanning signals. A first evaluation device that determines a rough reference position. A second evaluation device that determines a beat signal phase. A third evaluation device, which is suitable for unequivocally marking a beat signal period from the rough reference position and, if a defined phase position exists, to issue a fine reference position from the beat signal phase.

摘要翻译： 一种位置测量系统，其包括具有限定的增量刻度周期的增量刻度轨迹和至少一个限定的参考位置的刻度，具有平均参考标记刻度周期的参考标记场。 扫描单元相对于刻度尺可移动，扫描单元具有用于产生扫描信号的多个扫描元件，其中产生至少两个相移的增量信号作为扫描信号。 确定粗略参考位置的第一评估装置。 确定拍频信号相位的第二评估装置。 第三评估装置，其适合于从粗略参考位置明确地标记拍频信号周期，并且如果存在定义的相位位置，则从拍子信号相位发出精细的参考位置。

公开(公告)号：US20040222365A1

公开(公告)日：2004-11-11

申请号：US10434508

申请日：2003-05-07

申请人： Mitutoyo Corporation

发明人： Joseph D. Tobiason

IPC分类号： G01D005/34

CPC分类号： G01D5/34723 ,  G01D5/268

摘要： A 2D fiber optic encoder readhead having multiple readhead portions for sensing the two-dimensional displacement of a scale grating is disclosed. The detector channels of the readhead portions are fiber optic detector channels having respective phase grating masks. At least two of the phase grating masks have different orientations so as to facilitate the detection of displacement in at least two different directions. The 2D fiber optic encoder readhead portions are configured to detect the displacement of a self-image pattern that results from a corresponding pattern on the scale grating. The self-image pattern allows for the detection of displacement in the at least two different directions. In various exemplary embodiments, the fiber optic readhead portions are constructed according to various design relationships that insure a robust signal-to-noise ratio. Accordingly, high levels of displacement signal interpolation may be achieved. The 2D fiber optic encoder readhead portions may be assembled in a particularly accurate and economical manner and may be provided in a package with dimensions on the order of 1-2 millimeters, resulting in a very small overall readhead dimension that is dependent on the number of readhead portions that are incorporated.

摘要翻译： 公开了具有用于感测刻度光栅的二维位移的多个读取头部分的2D光纤编码器读取头。 读取头部分的检测器通道是具有各自的相位光栅掩模的光纤检测器通道。 至少两个相位光栅掩模具有不同的取向，以便于在至少两个不同方向上检测位移。 2D光纤编码器读取头部分被配置为检测由比例光栅上的对应图案产生的自身图像图案的位移。 自图像图案允许检测至少两个不同方向上的位移。 在各种示例性实施例中，根据确保稳健的信噪比的各种设计关系来构造光纤读头头部分。 因此，可以实现高水平的位移信号插值。 2D光纤编码器读头部分可以以特别精确和经济的方式组装，并且可以设置在尺寸为1-2毫米量级的封装中，导致非常小的整体读取头尺寸，其取决于 读入头部分被并入。

公开(公告)号：US20040217269A1

公开(公告)日：2004-11-04

申请号：US10858949

申请日：2004-06-02

申请人： TRW Automotive Electronics & Components GmbH & Co. KG

发明人： Andreas Kall ,  Harald Koehnlein ,  Wolfgang Bruetsch ,  Ulf Mordau

IPC分类号： G01D005/34

CPC分类号： G01D5/34723

摘要： An optoelectronic angle-of-rotation sensor, in particular for detecting the steering angle in a vehicle steering system, comprises a light source, a photosensitive receiver, and a code disk which can be coupled to a component whose angle of rotation should be detected. The code disk is at least partly transparent for the light of the light source and is provided with an optical coding. The code disk constitutes a light guide and comprising a coupling surface via which the light of the light source enters the code disk, and comprising at least one deflection surface which deflects the light rays to the photosensitive receiver.

摘要翻译： 特别地，用于检测车辆转向系统中的转向角的光电转角传感器包括光源，感光接收器和可耦合到应该检测旋转角度的部件的代码盘。 代码盘对于光源的光至少是部分透明的，并且被提供有光学编码。 代码盘构成光导并且包括耦合表面，光源的光通过该耦合表面进入码盘，并且包括至少一个使光线偏转到光敏接收器的偏转表面。

公开(公告)号：US20040211890A1

公开(公告)日：2004-10-28

申请号：US10829546

申请日：2004-04-22

申请人： Renco Encoders, Inc.

发明人： Robert Malcolm Setbacken ,  Gary Thomas Rhodes ,  Kevin Michael Carbone ,  Gregg Richard Service

IPC分类号： G01D005/34

CPC分类号： G01D5/34707 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01L2924/00014

摘要： A lead frame assembly that includes a lead frame defining a cavity, a lead frame contact disposed within the cavity and a sensor disposed on the lead frame contact.

摘要翻译： 一种引线框架组件，其包括限定空腔的引线框架，布置在空腔内的引线框架触点和设置在引线框架触点上的传感器。

公开(公告)号：US20040188601A1

公开(公告)日：2004-09-30

申请号：US10403990

申请日：2003-03-31

申请人： Council of Scientific and Industrial Research

发明人： Surjit Singh Ahluwalia

IPC分类号： G01D005/34

CPC分类号： G01D5/247

摘要： A system for accurately sensing/determining the position of an uniformly rotating shaft characterized in using a single marker in tandem with a high frequency signal, said system comprising a shaft mounted with a disc having a single marker, an opto-electronic device placed in front of the disc for generating a nullmarker signalnull for every rotation of the disc, a means for producing a high frequency signal for sampling/slicing/slotting the time period between two consecutive marker signals, input terminals of a gating mechanism being connected to the opto-electronic device and the high frequency signal generator and an output terminal being connected to a counter such that the gating mechanism allows the high frequency signal to pass to the counter and said counter being configured for counting the number of pulses in the high frequency signal, a D/A converter connected to an output of the counter for converting the number of pulses counted into an analog signal and optionally, a display mechanism for displaying the analog signal in terms of the angle through which the shaft has rotated.

摘要翻译： 一种用于精确地感测/确定均匀旋转轴的位置的系统，其特征在于使用与高频信号串联的单个标记，所述系统包括安装有具有单个标记的盘的轴，放置在前面的光电装置 ，用于产生用于盘的每次旋转的“标记信号”的装置，用于产生用于对两个连续标记信号之间的时间段进行采样/分片/切换的高频信号的装置，门控机构的输入端连接到 光电器件和高频信号发生器以及输出端子连接到计数器，使得门控机构允许高频信号传递到计数器，并且所述计数器被配置为对高频信号中的脉冲数进行计数 连接到计数器的输出的D / A转换器，用于将计数的脉冲数转换为模拟信号，以及可选地，显示 根据轴旋转的角度显示模拟信号的机构。

公开(公告)号：US20040183701A1

公开(公告)日：2004-09-23

申请号：US10790785

申请日：2004-03-03

申请人： Harmonic Drive Systems Inc.

发明人： Muneo Mitamura ,  Yoshinori Ito ,  Sadaharu Kanamori

IPC分类号： H03M001/22 ,  G01D005/34

CPC分类号： H03M1/301 ,  G01D5/34715

摘要： A projection-type rotary encoder is provided which has a light source, an object grating plate in which a substantially fan-shaped object grating for transmitting light is arranged at constant angular intervals in the circumferential direction, a rotary scale plate in which a substantially fan-shaped scale grating for transmitting light is arranged at constant angular intervals in the circumferential direction, and a photodiode grating plate in which a substantially fan-shaped photodiode photosensitive surface grating is arranged at constant angular intervals in the circumferential direction. A scale grating 32A is formed in the rotary scale plate with a shape and size that correspond to a light image of the object grating 31A incident on the surface thereof. A photodiode photosensitive surface grating 33A is formed in the photodiode grating plate with a shape and size that correspond to a light image of the scale grating 32A incident on the surface thereof.

摘要翻译： 提供一种具有光源的投影式旋转编码器，其中用于透射光的大致扇形物体光栅在圆周方向上以恒定角度间隔布置的物体光栅板，旋转刻度板，其中基本上为风扇 在圆周方向以恒定的角度间隔布置用于透射光的鳞状光栅，以及光电二极管光栅板，其中大致扇形的光电二极管光敏表面光栅在圆周方向上以恒定的角度间隔布置。 刻度光栅32A形成在旋转刻度盘上，其形状和尺寸对应于入射在其表面上的物体光栅31A的光图像。 在光电二极管光栅板中形成光电二极管光敏表面光栅33A，其形状和尺寸对应于入射在其表面上的刻度光栅32A的光图像。

公开(公告)号：US20040173736A1

公开(公告)日：2004-09-09

申请号：US10783592

申请日：2004-02-20

申请人： Canon Kabushiki Kaisha

发明人： Akio Atsuta ,  Masahiko Igaki

IPC分类号： G01D005/34

CPC分类号： G01D5/34715

摘要： In an optical encoder, a plurality of light sources is controlled on and off so as to use light rays to irradiate an optical grating of a scale from a plurality of different directions. The light rays are received by a plurality of photoreceptor elements. Operations are performed using signals output from the photoreceptor elements. Accordingly, the relative position between the photoreceptor elements and the scale is detected precisely.

摘要翻译： 在光学编码器中，多个光源被控制开和关，以便使用光线从多个不同方向照射刻度的光栅。 光线被多个感光元件接收。 使用从感光体元件输出的信号进行操作。 因此，精确地检测感光元件与刻度之间的相对位置。

公开(公告)号：US20040031912A1

公开(公告)日：2004-02-19

申请号：US10004035

申请日：2001-10-31

发明人： Marvin Glenn Wong

IPC分类号： G01D005/34

CPC分类号： H01G5/18

摘要： In accordance with the invention, Brownian noise caused by molecular gas collisions in a micromachined varactor are substantially reduced, and even eliminated, by specialized packaging of the micromachined varactor. The packaging of the micromachined varactor provides for altering the environment of the micromachined varactor so that it is in a vacuum rather than in a gas. Accordingly, the random pressure fluctuations may be completely eliminated. Since a varactor is a device in which the moveable parts do not make contact with the fixed parts, and then separate, stiction is not a problem.

摘要翻译： 根据本发明，通过微加工变容二极管的专门包装，微机械变容二极管中由分子气体碰撞引起的布朗噪声大大降低，甚至消除。 微加工变容二极管的封装提供了改变微加工变容二极管的环境，使其处于真空而不是气体中。 因此，可以完全消除随机压力波动。 由于变容二极管是可移动部件不与固定部件接触的装置，因此分离，静止不成问题。