公开(公告)号：WO1992004598A1

公开(公告)日：1992-03-19

申请号：PCT/EP1991001674

申请日：1991-09-04

Applicant: JENOPTIK CARL ZEISS JENA GMBH ,  SCHUCHARDT, Gerd ,  FREITAG, Hans-Joachim

Inventor： JENOPTIK CARL ZEISS JENA GMBH

IPC: G01D05/249

CPC classification number: G01D5/366 ,  G01D5/2457

Abstract: The invention concerns a method of measuring lengths, in which a scanning device scans a substrate (1) with a graduated scale (2), having a graduation band, and reference marks (7) various distances apart along at least one other band (3). The signals from the scanning device are processed in a processing unit and in a display unit, the various distances between the reference marks (7) being determined in graduation-band units by scanning the graduated scale (2). From these interval-measurement signals, information is obtained in coded form on the absolute position values of the reference marks (7). The absolute value of a reference mark (7) obtained by decoding a coded value is related to a particular position (Pn) on the graduation band, the position being shifted, in the direction of travel (8), by a whole number (zo) of units, where zo is >/= 1, with respect to the position on the graduation band at which the last reference mark (7) in the respective code generated its code pulse. In addition, the decoded absolute value at this position (Pn) is fed to the display unit as the current position of the measurement device, and the shift of the position (Pn) with respect to the last code pulse is determined from the graduation signals in the graduation band to provide the absolute value decoded by the processing device.

Abstract translation: 本发明涉及一种测量长度的方法，其中扫描装置用具有刻度带的刻度（2）扫描基板（1），并沿着至少一个其它带（3）分开各种距离的参考标记（7） ）。 来自扫描装置的信号在处理单元和显示单元中进行处理，通过扫描刻度尺（2），以刻度带单位确定参考标记（7）之间的各种距离。 从这些间隔测量信号，以参考标记（7）的绝对位置值的编码形式获得信息。 通过对编码值进行解码而获得的参考标记（7）的绝对值与分度带上的特定位置（Pn）相关，该位置沿行进方向（8）偏移整数（zo ），其中zo为> / = 1，相对于在相应代码中最后一个参考标记（7）产生其代码脉冲的刻度带上的位置。 此外，该位置（Pn）的解码绝对值作为测量装置的当前位置被馈送到显示单元，并且从刻度信号确定位置（Pn）相对于最后的代码脉冲的偏移 在刻度带中提供由处理装置解码的绝对值。

公开(公告)号：WO1991010113A1

公开(公告)日：1991-07-11

申请号：PCT/DE1990000870

申请日：1990-11-14

Applicant: ROBERT BOSCH GMBH ,  LÖFFLER, Alf

Inventor： ROBERT BOSCH GMBH

IPC: G01D05/249

CPC classification number: G01D5/2457

Abstract: A transmitter for recognising the positions of cylinders and/or camshafts in which, in order to pinpoint the position, a pseudo-random code is read into a register and the current position is found from the current content of the register. The code is displayed in an assessment arrangement in which the pulse sequences from one or two sensors are evaluated, whereby the sensors scan the suitably surfaced transmitter wheels connected to the crank or camshaft.

公开(公告)号：WO1990000720A1

公开(公告)日：1990-01-25

申请号：PCT/JP1989000693

申请日：1989-07-10

Applicant: FURUNO ELECTRIC COMPANY, LIMITED ,  MINOHARA, Kiyomi ,  ABE, Atsushi ,  NIIDOME, Toshihiro

Inventor： FURUNO ELECTRIC COMPANY, LIMITED

IPC: G01D05/249

CPC classification number: G01D5/34776 ,  G01D5/2497 ,  H03M1/143 ,  H03M1/26

Abstract: This invention relates to a rotary encoder for detecting a rotating angle. The rotary encoder of this invention consists of a rotary member having digital code patterns representing an absolute angle range and patterns representing relative angles formed on its surface, higher order angle data generation means (1, 2, 5, 7) for reading the absolute angle patterns and generating higher order angle data and lower order angle data generation means (1, 2, 5, 7) for reading the relative angle patterns and generating lower order angle data. The rotary encoder of the present invention secures resolution of a medium level by digital codes and improves resolution of a rotating angle to be detected by resolution of a level higher than the medium level obtained by the relative angle patterns.

Abstract translation: 本发明涉及一种用于检测旋转角度的旋转编码器。 本发明的旋转编码器由具有表示绝对角度范围的数字码图形和表示在其表面上形成的相对角度的图案的旋转构件组成，用于读取绝对角度的高阶角数据生成装置（1,2,5,7） 生成高阶角数据和低阶角数据生成装置（1,2,5,7），用于读取相对角度图形并生成低阶角数据。 本发明的旋转编码器通过数字代码确保中等水平的分辨率，并且通过高于通过相对角度图形获得的中等水平的分辨率来提高待检测的旋转角度的分辨率。

公开(公告)号：WO1993025865A1

公开(公告)日：1993-12-23

申请号：PCT/NL1993000130

申请日：1993-06-15

Applicant: BOOTSMAN HOLDING B.V. ,  OOSTERWIJK, Alexander ,  BOOTSMAN, Gerrit

Inventor： BOOTSMAN HOLDING B.V.

IPC: G01D05/249

CPC classification number: G01D5/366 ,  F15B15/28 ,  G01D5/2492

Abstract: Position detection system for a body which changes position, comprising a series of markings made at a mutual distance from one another and a scanner unit, which is movable with respect to said series of markings, for scanning said markings, the series of markings or the scanner unit being connected to the body, the markings (7) being made in various groups of a predetermined number of adjacent markings in the series, the markings per group always being made in a sequence such that said sequence belongs to only one group.

Abstract translation: 用于改变位置的身体的位置检测系统，包括彼此相互距离地制成的一系列标记和可相对于所述一系列标记移动的扫描器单元，用于扫描所述标记，所述一系列标记或 扫描器单元连接到身体，标记（7）被制成具有预定数量的串联的相邻标记的各种组，每组的标记总是按照这样的顺序制成，使得所述序列仅属于一个组。

公开(公告)号：WO1989012213A1

公开(公告)日：1989-12-14

申请号：PCT/JP1989000506

申请日：1989-05-22

Applicant: FANUC LTD ,  TANIGUCHI, Mitsuyuki

Inventor： FANUC LTD

IPC: G01D05/249

CPC classification number: G01D5/24476 ,  G01D5/24409

Abstract: A difference operation unit (6) calculates a difference DELTACi between the data of upper six bits of the interpolation data (D4) in a lower channel (e.g., a 4096lambda channel) having a large number of cycles and the data of lower six bits of the interpolation data (D3) in an upper channel (e.g., a 256lambda channel) having a small number of cycles. A corrected data operation unit (8) finds a corrected data Ci such that the difference becomes smaller than a predetermined value or becomes minimal. Using the corrected data Ci, the angle data correction units (3a to 3c) correct the interpolation data (D3) in the neighboring upper channel, and the upper four bits of interpolation data (D4' to D1') of the channels after corrected are synthesized in order to detect an absolute position of the rotary shaft.

公开(公告)号：WO1988006717A1

公开(公告)日：1988-09-07

申请号：PCT/GB1988000119

申请日：1988-02-24

Applicant: RENISHAW PLC ,  McMURTRY, David, Roberts ,  CHANEY, Raymond, John ,  WILSON, David

Inventor： RENISHAW PLC

IPC: G01D05/249

CPC classification number: G01D5/2457 ,  G01B5/0009 ,  G01B21/042

Abstract: A scale (10) is fixed to one part of the apparatus (12), and a read head (14) is relatively movable on the other part of the apparatus. Incremental scale marks (34, 35, 42, 44) are regularly spaced along the scale (10) and are counted in a counter (28) to give an indication of relative position of the scale and read head. The marks may for example be recorded magnetically. Some scale marks (34, 42, 44) are distinguishable from the others (35), e.g. by having different amplitudes (L1, L2). Positioning information can then be encoded in a binary word (40). This can either be absolute position values, or error correction information.

Abstract translation: 秤（10）固定在设备（12）的一部分上，并且读头（14）可在设备的另一部分上相对移动。 增量刻度标记（34,35,42,44）沿着刻度（10）规则地间隔开并且被计数在计数器（28）中，以给出刻度尺和读取头的相对位置的指示。 标记可以例如磁性地记录。 一些刻度标记（34,42,44）可以与其他刻度标记（35）区分开。 通过具有不同的振幅（L1，L2）。 定位信息然后可以用二进制字编码（40）。 这可以是绝对位置值或错误校正信息。

公开(公告)号：WO1997045705A1

公开(公告)日：1997-12-04

申请号：PCT/JP1997001758

申请日：1997-05-23

Applicant: SEIKO EPSON CORPORATION ,  AKAHANE, Hidehiro ,  SHIMURA, Noriaki

Inventor： SEIKO EPSON CORPORATION

IPC: G01D05/249

CPC classification number: G01D5/2492 ,  G04C3/14

Abstract: A small size high precision position detector for automatically detecting a hand position which is necessary for adding a function such as automatic time setting of a timer. An identification pattern (20) where identification marks are provided discretely is made of a hard magnetic thin film. The surface of the center wheel (17) moved interlockingly with the minute hand (12) serves as an encoder face. The existence of the identification marks are sampled by a magnetic sensor (21b) at a plurality of sampling points. The detection signals of the magnetic sensor at the respective sampling points are sorted into three types of data, "1" meaning that the identification mark exists, "0" meaning that the identification mark does not exist and "*" meaning that the identification mark is indefinite. The sampling codes which are obtained by the data of a plurality of the sampling points are compared with a reference identification code to determine the position. Further, by arranging the identification patterns regularly in relation to the sampling points, the errors of the indefinite data can be corrected.

Abstract translation: 一种小尺寸的高精度位置检测器，用于自动检测用于添加定时器的自动时间设置等功能所必需的手位置。 其中识别标记离散地提供的识别图案（20）由硬磁性薄膜制成。 与分针（12）互动地移动的中心轮（17）的表面用作编码器面。 通过多个采样点处的磁传感器（21b）对识别标记的存在进行采样。 在各采样点的磁传感器的检测信号被分为三种类型的数据：表示识别标记存在的“1”，意味着识别标记不存在，“*”表示识别标记 是无限的 将通过多个采样点的数据获得的采样码与参考识别码进行比较以确定位置。 此外，通过相对于采样点规则地布置识别图案，可以校正不确定数据的误差。

公开(公告)号：WO1993021499A1

公开(公告)日：1993-10-28

申请号：PCT/JP1993000506

申请日：1993-04-20

Applicant: COPAL COMPANY LIMITED ,  TAKAGI, Masaaki ,  FUKUDA, Takumi

Inventor： COPAL COMPANY LIMITED

IPC: G01D05/249

CPC classification number: G01D5/34792 ,  G01D5/2497 ,  H03M1/26

Abstract: An absolute encoder comprises a moving member in which track groups (T2 and T1) consisting of a plurality of slit patterns bit-coded in accordance with digital code representing an absolute address such as a binary-coded quaternary code are parallelly arranged in a form from higher bits to lower bits; a light source for illuminating the member; photodetecting elements (1 and 2) which output detection signals (A0 to A3 ) for each track by receiving the illuminated light through the slit patterns; and processing means for processing the detected signals to generate bit reproducing signals (P0 to P3) and read the absolute addresses of the moving member by decoding. This processing means is provided with operating means (3 to 20) for generating the high order bit reproducing signals (P2 and P3) which are synchronized with the rising or falling of the low order bit reproducing signal (P0) by operating the low order detection signals (A0 to A0 ) obtained from the lower bit track (T1) and the high order detection signals (A2 to A3 ) obtained from the higher order bit track (T2). If the number of the tracks is increased, it is necessary to provide an arrangement in which the light which illuminates the lower order bit track is received through a magnifying optical system and at the same time, the light which illuminates the track on the high order bit side is received directly.

Abstract translation: 绝对编码器包括移动构件，其中由多个狭缝图案组成的轨道组（T2和T1）由根据表示诸如二进制编码的四进制代码之类的绝对地址的数字代码而被位编码的多个狭缝模式并行地以 较高位到较低位; 用于照亮所述构件的光源; 通过接收经过狭缝图案的照明光，对每个轨道输出检测信号（A0 +至A3 < - ）的光检测元件（1和2） 以及处理装置，用于处理所检测的信号以产生位再现信号（P0至P3），并通过解码读取移动部件的绝对地址。 该处理装置设置有用于通过操作低阶检测来产生与低位位再现信号（P0）的上升或下降同步的高位位再现信号（P2和P3）的操作装置（3至20） 从较低位轨迹（T1）获得的信号（A0 +至A0 < - ）和从高位位轨迹（T2）获得的高阶检测信号（A2 <+>至A3 < - >）。 如果轨道的数量增加，则需要提供通过放大光学系统接收照亮低阶位轨道的光并且同时以高次序照亮轨道的光的布置 位边直接接收。

公开(公告)号：WO1991000984A1

公开(公告)日：1991-01-24

申请号：PCT/JP1990000072

申请日：1990-01-23

Applicant: KABUSHIKI KAISHA YASKAWA DENKI SEISAKUSHO ,  NAGASE, Takashi ,  HIGASHI, Kouichi

Inventor： KABUSHIKI KAISHA YASKAWA DENKI SEISAKUSHO

IPC: G01D05/249

CPC classification number: H03M1/282 ,  G01D5/2495 ,  G01D5/34792

Abstract: This invention relates to an absolute value encoder with which an arbitrary resolution can be realized by preparing a random number sequence of any length by the application of an algorithm that shifts binary codes by M bits and adds 0 or 1 such that the codes are all different from each other. Further, when a slit pattern of codes of random numbers of M-series is used, a resolution of 2K can be realized by the use of a circuit that generates a pattern of a combination of zero and a code of random numbers of M-series.

公开(公告)号：WO1996023198A1

公开(公告)日：1996-08-01

申请号：PCT/US1995016815

申请日：1995-12-22

Applicant: BOURNS, INC.

Inventor： BOURNS, INC. ,  BRANDESTINI, Marco

IPC: G01D05/249

CPC classification number: G01D5/2492 ,  H03M1/285

Abstract: An encoder to convert absolute angular or linear position to digital information, and a method to derive code sequences to produce such encoders. A sensor-detectable code, such as a binary, ternary or quaternary code, is arranged along a single track (11), and sensors (21, 22, 23, 24) are positioned in a prescribed manner along the track to sense the code. The sensors may be mechanical contacts, optical detectors, magnetic detectors, or capacitive detectors. The sensors (21, 22, 23, 24) and the information elements (12, 13, 14) of the code are arranged such that the digital output sequence produced by the sensors (as the track is moved relative to the sensors) is Gray-encoded, and such that a high level of code efficiency is obtained. Codes sequences are derived using a method which involves the generation and ordering of necklaces.

Abstract translation: 将绝对角度或线性位置转换为数字信息的编码器，以及导出代码序列以产生这种编码器的方法。 沿着单个轨道（11）布置诸如二进制，三进制或四进制代码的传感器可检测代码，并且沿着轨道以规定的方式定位传感器（21,22,23,24）以感测代码 。 传感器可以是机械接触件，光学检测器，磁性检测器或电容式检测器。 代码的传感器（21,22,23,24）和信息元件（12,13,14）被布置成使得由传感器产生的数字输出序列（当轨道相对于传感器移动时）为灰色 并且使得获得高水平的代码效率。 代码序列使用涉及项链生成和排序的方法得出。