JP4914899B2 - 電気信号の振幅状態測定方法 - Google Patents
電気信号の振幅状態測定方法 Download PDFInfo
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- JP4914899B2 JP4914899B2 JP2008535494A JP2008535494A JP4914899B2 JP 4914899 B2 JP4914899 B2 JP 4914899B2 JP 2008535494 A JP2008535494 A JP 2008535494A JP 2008535494 A JP2008535494 A JP 2008535494A JP 4914899 B2 JP4914899 B2 JP 4914899B2
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- 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
- G01D5/24—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 capacitance
- G01D5/241—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 capacitance by relative movement of capacitor electrodes
- G01D5/2412—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 capacitance by relative movement of capacitor electrodes by varying overlap
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- 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
- G01D5/24—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 capacitance
- G01D5/241—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 capacitance by relative movement of capacitor electrodes
-
- 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
- G01D5/24—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 capacitance
- G01D5/2403—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 capacitance by moving plates, not forming part of the capacitor itself, e.g. shields
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- 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
- G01D5/24—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 capacitance
- G01D5/241—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 capacitance by relative movement of capacitor electrodes
- G01D5/2412—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 capacitance by relative movement of capacitor electrodes by varying overlap
- G01D5/2415—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 capacitance by relative movement of capacitor electrodes by varying overlap adapted for encoders
-
- 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
- G01D5/244—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 characteristics of pulses or pulse trains; generating pulses or pulse trains
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Description
・コンポジット信号内のオーバトーンをフィルタリングするのに先進的で高価な帯域フィルタが必要である。
・同一のフィルタを製作するのが困難である。
・システムはオフセットに敏感で、コンポジット信号のゼロ検出に影響を及ぼす。
・システムはクロストークに敏感で、コンポジット信号のゼロ検出に影響を及ぼす。
・ドップラー効果により、できるだけ望ましくフィルタリングを行うことはできず、コンポジット信号のゼロ検出に影響を及ぼす。
・小さい時間遅延を達成しながら高い測定解像度および高頻度の更新を達成するのが困難である。
図2aの電極21は右に移動すると電極Rと重複する度合いが増し、重複領域の大きさは電極21の位置(x)の関数となり、それは図2bに連続線Rで示されている。電極21および相互作用電極、ここではR、間の静電容量はこうして重複領域に直接比例する。
ここに、Lは容量関数(図2b)の1周期に対応する機械的長さである。
および互いに90度の位相変位を有する周期的方形波(図3)とすることができる。図3は図2bにおいてあるランダムに選択された(x)の値において現われることがあるコンポジット信号v0(x,t)も示している。
Claims (12)
- 長さまたは角度を測定するための容量性測定スケールの信号処理方法であって、一緒にコンデンサを形成する電極が設けられた互いに移動することができる2つの部分からなり、そのキャパシタンスの大きさは可変であって互いに移動することができる2つの部分間の正弦状関係(xC)により指定される相対的位置によって決まり、第1の部分は1測定周期にわたって均一に分布されたn(nは整数)電極を有し第2の部分は測定周期当たり1つの電極を有し、第1の部分内の電極にはnの交流電圧が供給され前記交流電圧の互いの時間変位はt0/nであり、t0は前記交流電圧の周期の長さであり、第2の移動部の電極は前記交流電圧の1つまたはいくつかにより構成される信号を容量性方法で捕捉し、コンポジット信号の振幅合成は2つの部分間の相対的位置(x)によって決まり、前記振幅合成へのnの信号全ての寄与が測定されてnのサンプリングの各々に対して個別に格納されることを特徴とする方法。
- 請求項1に記載の方法であって、振幅合成の前記測定は入力信号に関して固定され1信号周期全体にわたって均一に分布されたnの時間、T、において「サンプル・アンド・ホールド」として広く知られた方法により実施されることを特徴とする方法。
- 請求項2に記載の方法であって、サンプリングは入力信号と同期して実施されることを特徴とする方法。
- 請求項3に記載の方法であって、振幅値の前記「サンプル・アンド・ホールド」手順は基本周波数(f0)の各周期全体にわたり逐次実施され、その値はnのサンプリングの各々に対して個別に格納されることを特徴とする方法。
- 請求項4に記載の方法であって、電位の形で蓄積コンデンサ内に格納される振幅値は既知のA/D変換技術に従ってデジタル化されることを特徴とする方法。
- 請求項5に記載の方法であって、サンプリングおよびA/D変換は逐次実施されA/DコンバータはA/D変換中にセンサ信号から電気的に絶縁されることを特徴とする方法。
- 請求項6に記載の方法であって、入力位相の数nは4に等しいことを特徴とする方法。
- 請求項7に記載の方法であって、A/D変換は対として異なる方法で実施され、1番および3番サンプリングからの振幅値が1つの対を形成し2番および4番サンプリングからの振幅値が第2の対を形成することを特徴とする方法。
- 請求項9に記載の方法であって、相対的位置(xC)のデジタル化および計算は信号周期当たりn回実施され、計算に使用される振幅値は各計算に対して1つのサンプリングステップにより連続的に更新されることを特徴とする方法。
- 請求項10に記載の方法であって、A/D変換は2つのA/Dコンバータにより実施され、その一方は振幅値1および3をデジタル化し他方は振幅値2および4をデジタル化することを特徴とする方法。
- 請求項11に記載の方法であって、A/D変換は1つの多重化されたA/Dコンバータにより実施されることを特徴とする方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0502272-8 | 2005-10-14 | ||
SE0502272A SE529249C2 (sv) | 2005-10-14 | 2005-10-14 | Förfarande vid signalbehandling vid kapacitiva mätskalor |
PCT/SE2006/050369 WO2007043962A1 (en) | 2005-10-14 | 2006-10-03 | Method for signal processing of capacitive measurement scales |
Publications (2)
Publication Number | Publication Date |
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JP2009511902A JP2009511902A (ja) | 2009-03-19 |
JP4914899B2 true JP4914899B2 (ja) | 2012-04-11 |
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JP2008535494A Expired - Fee Related JP4914899B2 (ja) | 2005-10-14 | 2006-10-03 | 電気信号の振幅状態測定方法 |
Country Status (6)
Country | Link |
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US (1) | US7956622B2 (ja) |
EP (1) | EP1943482B1 (ja) |
JP (1) | JP4914899B2 (ja) |
CN (1) | CN101287964B (ja) |
SE (1) | SE529249C2 (ja) |
WO (1) | WO2007043962A1 (ja) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102009031664A1 (de) * | 2009-07-04 | 2011-01-05 | Camille Bauer Ag, Wohlen | Kapazitiver Drehwinkelsensor |
CN101949682B (zh) * | 2010-08-14 | 2012-10-24 | 桂林广陆数字测控股份有限公司 | 绝对位置测量容栅位移测量方法、传感器及其运行方法 |
EP2629061B1 (en) * | 2012-02-14 | 2014-09-17 | SICK STEGMANN GmbH | Method for operating a capacitive position sensor and capacitive position sensor |
JP5958318B2 (ja) * | 2012-12-12 | 2016-07-27 | 日立金属株式会社 | 放電電荷量測定方法及び放電電荷量測定装置 |
JP5880884B2 (ja) | 2013-05-31 | 2016-03-09 | 株式会社デンソー | 回転状態検出装置 |
EP3040689B1 (de) | 2014-12-04 | 2017-07-19 | Hexagon Technology Center GmbH | Absoluter kapazitiver Winkelencoder |
JP6823483B2 (ja) * | 2017-02-02 | 2021-02-03 | 株式会社ミツトヨ | 変位検出器 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
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SE411392B (sv) * | 1977-12-09 | 1979-12-17 | Inst Mikrovagsteknik Vid Tekni | Metanordning for kapacitiv bestemning av det inbordes leget hos tva relativt varandra rorliga delar |
DE3711062A1 (de) | 1987-04-02 | 1988-10-20 | Herbert Leypold | Kapazitive absolute positionsmessvorrichtung |
GB2237639B (en) * | 1989-10-31 | 1994-07-06 | British Gas Plc | Measurement system |
DE4016434A1 (de) * | 1990-05-22 | 1991-11-28 | Bosch Gmbh Robert | Kapazitiver stellungsgeber |
CH685214A5 (fr) * | 1991-10-15 | 1995-04-28 | Hans Ulrich Meyer | Capteur capacitif de position. |
US6492911B1 (en) * | 1999-04-19 | 2002-12-10 | Netzer Motion Sensors Ltd. | Capacitive displacement encoder |
JP3520233B2 (ja) * | 2000-01-21 | 2004-04-19 | 春夫 小林 | Ad変換回路 |
SE516952C2 (sv) * | 2000-09-04 | 2002-03-26 | Johansson Ab C E | Vinkelgivare |
US6873163B2 (en) * | 2001-01-18 | 2005-03-29 | The Trustees Of The University Of Pennsylvania | Spatially resolved electromagnetic property measurement |
GB2390167B (en) * | 2002-06-25 | 2005-07-13 | Hubbell Inc | Method and apparatus for testing an electrical component |
FR2844048B1 (fr) * | 2002-08-30 | 2005-09-30 | Nanotec Solution | Systeme et procede de mesure sans contact d'un deplacement ou positionnement relatif de deux objets adjacents par voie capacitive, et application au controle de miroirs |
US7196527B2 (en) * | 2004-02-17 | 2007-03-27 | Stridsberg Innovation Ab | Redundant compact encoders |
WO2006002311A2 (en) * | 2004-06-23 | 2006-01-05 | Fe Technical Services, Inc. | Capacitive sensing techniques |
US7545289B2 (en) * | 2006-07-17 | 2009-06-09 | Synaptics Incorporated | Capacitive sensing using a repeated pattern of sensing elements |
-
2005
- 2005-10-14 SE SE0502272A patent/SE529249C2/sv not_active IP Right Cessation
-
2006
- 2006-10-03 JP JP2008535494A patent/JP4914899B2/ja not_active Expired - Fee Related
- 2006-10-03 US US12/089,914 patent/US7956622B2/en not_active Expired - Fee Related
- 2006-10-03 EP EP06799829.4A patent/EP1943482B1/en not_active Not-in-force
- 2006-10-03 CN CN2006800380911A patent/CN101287964B/zh not_active Expired - Fee Related
- 2006-10-03 WO PCT/SE2006/050369 patent/WO2007043962A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
SE529249C2 (sv) | 2007-06-12 |
EP1943482A4 (en) | 2012-05-16 |
EP1943482A1 (en) | 2008-07-16 |
WO2007043962A1 (en) | 2007-04-19 |
SE0502272L (sv) | 2007-04-15 |
EP1943482B1 (en) | 2016-12-07 |
JP2009511902A (ja) | 2009-03-19 |
CN101287964A (zh) | 2008-10-15 |
US7956622B2 (en) | 2011-06-07 |
US20080300808A1 (en) | 2008-12-04 |
CN101287964B (zh) | 2011-10-26 |
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