JP2019146024A - 近接センサ - Google Patents
近接センサ Download PDFInfo
- Publication number
- JP2019146024A JP2019146024A JP2018028652A JP2018028652A JP2019146024A JP 2019146024 A JP2019146024 A JP 2019146024A JP 2018028652 A JP2018028652 A JP 2018028652A JP 2018028652 A JP2018028652 A JP 2018028652A JP 2019146024 A JP2019146024 A JP 2019146024A
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- Prior art keywords
- detection
- circuit
- proximity sensor
- detection coil
- excitation
- 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.)
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- 238000001514 detection method Methods 0.000 claims abstract description 150
- 230000005284 excitation Effects 0.000 claims abstract description 65
- 230000000737 periodic effect Effects 0.000 abstract description 21
- 230000001360 synchronised effect Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 230000004907 flux Effects 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/945—Proximity switches
- H03K17/95—Proximity switches using a magnetic detector
- H03K17/952—Proximity switches using a magnetic detector using inductive coils
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/945—Proximity switches
- H03K17/95—Proximity switches using a magnetic detector
- H03K17/9502—Measures for increasing reliability
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
- G01D5/2006—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the self-induction of one or more coils
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
- G06F7/58—Random or pseudo-random number generators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/945—Proximity switches
- H03K17/95—Proximity switches using a magnetic detector
- H03K17/952—Proximity switches using a magnetic detector using inductive coils
- H03K17/9525—Proximity switches using a magnetic detector using inductive coils controlled by an oscillatory signal
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Remote Sensing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mathematical Optimization (AREA)
- Computational Mathematics (AREA)
- Mathematical Analysis (AREA)
- Pure & Applied Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Electromagnetism (AREA)
- Electronic Switches (AREA)
- Geophysics And Detection Of Objects (AREA)
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
Abstract
Description
20…励磁回路、21・22・23・24・SW…スイッチ、25・26…定電流回路
30…検出回路、31…増幅回路、32…同期検波回路、33…切換回路
34…ローパスフィルタ、35…ADコンバータ、比較部36
40…制御回路、50…乱数器
100…近接センサ、200…検出体、300…近接センサ
Claims (3)
- 磁界を利用して検出体を検出する近接センサであって、
磁界を発生させる検出コイルと、
前記検出コイルにパルス状の励磁電流を繰り返し供給する励磁回路と、
前記励磁電流の供給が遮断された後の所定期間に前記検出コイルの両端に生じた電圧に基づいて、検出体を検出する検出回路と、
前記検出コイルへの励磁電流の供給を遮断するタイミングが非周期的となるように前記励磁回路を制御する制御回路とを備える、近接センサ。 - 前記制御回路は、前記励磁回路が前記検出コイルに励磁電流を供給する供給期間と、前記励磁回路が前記検出コイルに励磁電流を供給しない遮断期間との少なくともいずれかを変動させることにより、前記検出コイルへの励磁電流の供給を遮断するタイミングが非周期的となるように前記励磁回路を制御する、請求項1に記載の近接センサ。
- 乱数を生成する乱数器を更に備え、
前記制御回路は、前記乱数器により生成された乱数に基づいて、前記検出コイルへの励磁電流の供給を遮断するタイミングが非周期的となるように前記励磁回路を制御する、請求項1又は2に記載の近接センサ。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018028652A JP6918284B2 (ja) | 2018-02-21 | 2018-02-21 | 近接センサ |
KR1020180137963A KR20190100842A (ko) | 2018-02-21 | 2018-11-12 | 근접 센서 |
EP18205573.1A EP3531557B1 (en) | 2018-02-21 | 2018-11-12 | Proximity sensor |
CN201811345645.3A CN110174126A (zh) | 2018-02-21 | 2018-11-13 | 接近传感器 |
US16/188,284 US20190257974A1 (en) | 2018-02-21 | 2018-11-13 | Proximity sensor |
KR1020200063306A KR20200062146A (ko) | 2018-02-21 | 2020-05-26 | 근접 센서 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018028652A JP6918284B2 (ja) | 2018-02-21 | 2018-02-21 | 近接センサ |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2019146024A true JP2019146024A (ja) | 2019-08-29 |
JP6918284B2 JP6918284B2 (ja) | 2021-08-11 |
Family
ID=64277523
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2018028652A Active JP6918284B2 (ja) | 2018-02-21 | 2018-02-21 | 近接センサ |
Country Status (5)
Country | Link |
---|---|
US (1) | US20190257974A1 (ja) |
EP (1) | EP3531557B1 (ja) |
JP (1) | JP6918284B2 (ja) |
KR (2) | KR20190100842A (ja) |
CN (1) | CN110174126A (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11360200B2 (en) * | 2019-04-02 | 2022-06-14 | Tennessee Technological University | Omnidirectional, electric near-field distance sensing device |
DE102021000157A1 (de) | 2021-01-15 | 2022-07-21 | Pepperl+Fuchs Se | lnduktive Annäherungssensoreinheit und Verfahren zur Störungsüberprüfung bei einer induktiven Annäherungssensoreinheit |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4219740A (en) * | 1979-01-12 | 1980-08-26 | Eldec Corporation | Proximity sensing system and inductance measuring technique |
US5592058A (en) * | 1992-05-27 | 1997-01-07 | General Electric Company | Control system and methods for a multiparameter electronically commutated motor |
WO2002075763A1 (fr) * | 2001-03-15 | 2002-09-26 | Omron Corporation | Capteur de proximite |
US20060221061A1 (en) * | 2005-03-31 | 2006-10-05 | Tyco Electronic Corporation | Touch sensor and control with random pulse spacing |
CN101316780A (zh) * | 2005-05-13 | 2008-12-03 | 蒂森电梯资产公司 | 包括超宽带装置的电梯系统 |
JP4978377B2 (ja) | 2007-08-30 | 2012-07-18 | オムロン株式会社 | 近接センサ |
DE102012010228B4 (de) * | 2012-05-24 | 2019-07-11 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Bamberg | Kapazitiver Sensor für eine Kollisionsschutzvorrichtung |
-
2018
- 2018-02-21 JP JP2018028652A patent/JP6918284B2/ja active Active
- 2018-11-12 KR KR1020180137963A patent/KR20190100842A/ko active Application Filing
- 2018-11-12 EP EP18205573.1A patent/EP3531557B1/en active Active
- 2018-11-13 CN CN201811345645.3A patent/CN110174126A/zh active Pending
- 2018-11-13 US US16/188,284 patent/US20190257974A1/en not_active Abandoned
-
2020
- 2020-05-26 KR KR1020200063306A patent/KR20200062146A/ko not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
EP3531557A1 (en) | 2019-08-28 |
JP6918284B2 (ja) | 2021-08-11 |
US20190257974A1 (en) | 2019-08-22 |
KR20200062146A (ko) | 2020-06-03 |
CN110174126A (zh) | 2019-08-27 |
EP3531557B1 (en) | 2024-05-08 |
KR20190100842A (ko) | 2019-08-29 |
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