CN1963397A - Magnetic coder - Google Patents

Magnetic coder Download PDF

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Publication number
CN1963397A
CN1963397A CNA2006100676749A CN200610067674A CN1963397A CN 1963397 A CN1963397 A CN 1963397A CN A2006100676749 A CNA2006100676749 A CN A2006100676749A CN 200610067674 A CN200610067674 A CN 200610067674A CN 1963397 A CN1963397 A CN 1963397A
Authority
CN
China
Prior art keywords
magnet
coder
hall element
main part
chip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CNA2006100676749A
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Chinese (zh)
Other versions
CN100485319C (en
Inventor
桥本克博
梁川敏
浦崎雄三
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koyo Electronics Industries Co Ltd
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Koyo Electronics Industries Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koyo Electronics Industries Co Ltd filed Critical Koyo Electronics Industries Co Ltd
Publication of CN1963397A publication Critical patent/CN1963397A/en
Application granted granted Critical
Publication of CN100485319C publication Critical patent/CN100485319C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

The present invention provides a minitype high resolution (for example 10 bit) magnetic coder, which can be arranged even at scanty space. The magnetic coder of the present invention is provide with: a magnet (12) fixed on the top of the shaft (11); an IC chip (14) having a hall element (13) for detecting the variation of the magnetic field that rotates with the magnet (12), computing the rotation angle of the shaft (11) based on the detection for the hall element (13), and generating plurality of signals based on the rotation angle information; and plurality of circuit parts, for outputting the plurality of signals generated from the IC chip (14) respectively. The coder equips the magnet (12) provided with the shaft (11) and the IC chip (14) as the coder main body (10), connects the guide cable (20) to the coder main body (10), and equips the guide cables (20, 21) with a transfer part (30), which is provided with plurality of electric parts (32-34) and electrical source circuit part (31) for supplying electrical source to the coder main body (10).

Description

Magnetic encoder
Technical field
The anglec of rotation that the present invention relates to for example to be used in each joint of articulated robot detects, the small-sized magnetic encoder in the control of the position probing of automobile steering wheel or brushless DC motor.
Background technology
As existing magnetic encoder, the scrambler that is arranged in the stepper motor is for example arranged.It comprises: magnet is installed in the rotor yoke outer peripheral face on the turning axle that is arranged at stepper motor; The 1st track is installed in the outer peripheral face of magnet; The 2nd track is arranged on the end face with the 1st track quadrature; Multipole magnetization portion is arranged on the 1st track; The one pole portion of magnetizing is arranged on the 2nd track; 2 magnetic detecting elements are to be provided with multipole magnetization portion and the one pole opposed mode of portion that magnetizes respectively; And circuit substrate, the circuit block (for example with reference to patent documentation 1) of the output signal that is used to handle these 2 magnetic detecting elements is installed.
[patent documentation 1] spy open the 2004-144497 communique (the 6th page the-the 7th page, Fig. 1)
Though in the above-mentioned patent documentation 1 technology of record effectively utilized magnet periphery and with the end face of its quadrature, and the axial thickness of magnetic encoder is done thin,, seeking there is restriction in the miniaturization.
Summary of the invention
The present invention makes for solving above-mentioned problem, even its purpose is to provide a kind of size small-sized high resolution (for example 10bit) magnetic encoder that the little place narrow and small in the space also can be provided with.
Magnetic encoder of the present invention has: magnet, anchor at the axle the top; Arithmetic processing section has Hall element, and this Hall element detects the changes of magnetic field of the rotation of following this magnet, based on the detection of this Hall element the rotation angle of axle is carried out computing, and, generate a plurality of signals based on this rotary angle information; And a plurality of circuit parts, to output to the outside respectively by a plurality of signals that arithmetic processing section generates, wherein this scrambler will have the axle magnet and arithmetic processing section be provided as the scrambler main part, lead cable is connected on this scrambler main part, and then on lead cable, being equipped with transhipment department, this transhipment department has a plurality of circuit parts and the scrambler main part is carried out the power circuit part that power supply is supplied with.
In the present invention, be provided as the scrambler main part owing to will have the magnet and the arithmetic processing section of axle, on the lead cable that is connected on this scrambler main part, be equipped with transhipment department with a plurality of circuit parts and power circuit part, so, can make the shape of scrambler main part littler, even have the effect that the place narrow and small in the space also can be provided with.
Description of drawings
Fig. 1 is the outside drawing of the magnetic encoder of expression embodiments of the present invention.
Fig. 2 is the block diagram of the summary structure of expression magnetic encoder.
Embodiment
Fig. 1 is the outside drawing of the magnetic encoder of expression embodiments of the present invention, and Fig. 2 is the block diagram of the summary structure of expression magnetic encoder.
The magnetic encoder of present embodiment comprises: the lead cable 21 on scrambler main part 10, the other end that is connected to lead cable 20 on the scrambler main part 10, transhipment department 30 that an end is connected with this lead cable 20 and is connected to this transhipment department 30.This lead cable 21 is connected on the not shown controller.
As shown in Figure 2, scrambler main part 10 is equipped with: axle 11; Magnet 12 is installed in axle 11 top ends, has for example magnetic flux density of 12kGs; And IC chip 14 (arithmetic processing section), Hall element 13 is installed, this Hall element 13 detects the changes of magnetic field of the rotation of following magnet 12.Be mounted on the substrate though this IC chip 14 is not shown, scrambler main part 10 itself is covered by the covers 15 of magnetic material.By the influence of these cover 15 shieldings from the magnetic field of outside.
Described Hall element 13 serves as that axle is that arranged spaced is around it with 90 degree with the center of IC chip 14.IC chip 14 comes the rotation angle of axle 11 is carried out computing based on the signal from Hall element 13, and, form with pwm signal and digital signal (serial communication is used) is exported its absolute data (absolute data) (rotary angle information), simultaneously, generates increment signal.As this increment signal, the commutation signal (U phase V phase W phase signals) of A phase B phase signals, brushless DC motor etc. is arranged, set the switching of carrying out these signals by signal mode.
Transhipment department 30 constitutes: go up at substrate (not shown) power circuit part 31, low-pass filter portion 32, communication interface part 33 and output circuit 34 are installed, and covered by cover 35.Power circuit part 31 is the power supply 5V constant voltageization of self-controller in the future, and offers scrambler main part 10.Low-pass filter portion 32 is transformed to simulating signal with pwm signal.Be not provided with in transhipment department 30 under the situation of this low-pass filter portion 32, pwm signal is transmitted to controller.When communication interface part 33 receives the request of numerical data of rotation angle at slave controller, give IC chip 14, when the digital signal (definitely) that received according to this notice from IC chip 14, just this signal is passed on (serial) to controller with this advisory.Output circuit 34 will be exported to controller from the increment signal of IC chip 14.
Like this, be used as scrambler main part 10 owing to be equipped with magnet 12 and IC chip 14 with axle 11, between the lead cable 21 that is connected to the lead cable 20 on this scrambler main part 10 and is connected with controller, setting has the transhipment department 30 of power circuit part 31, low-pass filter 32, communication interface part 33 and output circuit 34, so, it is the scrambler main part 10 of 15mm * 15mm * 22mm that physical dimension can be provided, therefore, even have the effect that the place narrow and small in the space also can be provided with.

Claims (1)

1. magnetic encoder has: magnet anchors at the top of axle; Arithmetic processing section has Hall element, and this Hall element detects the changes of magnetic field of the rotation of following this magnet, based on the detection of this Hall element the rotation angle of axle is carried out computing, and, generate a plurality of signals based on this rotary angle information; And a plurality of circuit parts, will output to the outside respectively by a plurality of signals that this arithmetic processing section generates, wherein
Magnet and arithmetic processing section that this scrambler will have axle are provided as the scrambler main part, lead cable is connected on this scrambler main part, and then on described lead cable, being equipped with transhipment department, this transhipment department has described a plurality of circuit part and described scrambler main part is carried out the power circuit part that power supply is supplied with.
CNB2006100676749A 2005-11-11 2006-03-23 Magnetic coder Expired - Fee Related CN100485319C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005327876 2005-11-11
JP2005327876A JP2007132862A (en) 2005-11-11 2005-11-11 Magnetic encoder

Publications (2)

Publication Number Publication Date
CN1963397A true CN1963397A (en) 2007-05-16
CN100485319C CN100485319C (en) 2009-05-06

Family

ID=38082538

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2006100676749A Expired - Fee Related CN100485319C (en) 2005-11-11 2006-03-23 Magnetic coder

Country Status (4)

Country Link
JP (1) JP2007132862A (en)
KR (1) KR100804361B1 (en)
CN (1) CN100485319C (en)
TW (1) TWI298098B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101846531A (en) * 2010-05-28 2010-09-29 江苏斯沃特电气有限公司 Multipole combined-type magnetic encoder
WO2012031551A1 (en) * 2010-09-07 2012-03-15 江苏多维科技有限公司 Magnetic encoder using giant-hall-effect magnetic sensing element
CN102486384A (en) * 2010-12-06 2012-06-06 沈阳理工大学 Solar wireless multiturn coder
WO2013120374A1 (en) * 2012-02-17 2013-08-22 湖南三一智能控制设备有限公司 Multiturn rotary encoder
CN104567945A (en) * 2015-01-07 2015-04-29 北京龙邱智能科技有限公司 Magnetic encoder
CN104807482A (en) * 2015-04-29 2015-07-29 江苏亿嘉和信息科技有限公司 Encoder for measuring steering angles of inspection robots and method for correcting errors of steering angles

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009288125A (en) * 2008-05-30 2009-12-10 Koyo Electronics Ind Co Ltd Absolute encoder
FR2951265B1 (en) * 2009-10-14 2013-02-08 Electricfil Automotive MAGNETIC SENSOR FOR DETERMINING THE POSITION AND ORIENTATION OF A TARGET
CN111721329B (en) * 2020-07-07 2021-11-23 哈尔滨理工大学 three-Hall magnetoelectric encoder and arc-tangent-free calculation angle calculation method

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3550591B2 (en) * 1994-12-27 2004-08-04 株式会社ニコン Absolute encoder
JPH095116A (en) * 1995-06-15 1997-01-10 Nikon Corp Absolute encoder
US6762897B1 (en) * 1997-09-08 2004-07-13 Kabushiki Kaisha Yaskawa Denki Magnetic encoder apparatus
DE10047924B4 (en) * 2000-09-27 2004-08-05 Siemens Ag Drive control and method for networking a control unit with one or more encoder systems
JP2003279379A (en) * 2002-03-26 2003-10-02 Citizen Watch Co Ltd Optical displacement measuring instrument
JP2004178081A (en) * 2002-11-25 2004-06-24 Yaskawa Electric Corp Encoder system
JP4167092B2 (en) * 2003-02-28 2008-10-15 アイチ・マイクロ・インテリジェント株式会社 Steering angle detection device for automobile steering system
DE10312045B4 (en) 2003-03-18 2014-07-31 Anton Rodi Measuring system for absolute value recording of angles and paths

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101846531A (en) * 2010-05-28 2010-09-29 江苏斯沃特电气有限公司 Multipole combined-type magnetic encoder
WO2012031551A1 (en) * 2010-09-07 2012-03-15 江苏多维科技有限公司 Magnetic encoder using giant-hall-effect magnetic sensing element
CN102486384A (en) * 2010-12-06 2012-06-06 沈阳理工大学 Solar wireless multiturn coder
WO2013120374A1 (en) * 2012-02-17 2013-08-22 湖南三一智能控制设备有限公司 Multiturn rotary encoder
CN104567945A (en) * 2015-01-07 2015-04-29 北京龙邱智能科技有限公司 Magnetic encoder
CN104807482A (en) * 2015-04-29 2015-07-29 江苏亿嘉和信息科技有限公司 Encoder for measuring steering angles of inspection robots and method for correcting errors of steering angles

Also Published As

Publication number Publication date
CN100485319C (en) 2009-05-06
KR20070050748A (en) 2007-05-16
TW200718921A (en) 2007-05-16
KR100804361B1 (en) 2008-02-15
JP2007132862A (en) 2007-05-31
TWI298098B (en) 2008-06-21

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Granted publication date: 20090506

Termination date: 20190323