ES2199686A1 - Sensor optico de la posicion absoluta, con un fotodetector de imagen. - Google Patents

Sensor optico de la posicion absoluta, con un fotodetector de imagen.

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Publication number
ES2199686A1
ES2199686A1 ES200201836A ES200201836A ES2199686A1 ES 2199686 A1 ES2199686 A1 ES 2199686A1 ES 200201836 A ES200201836 A ES 200201836A ES 200201836 A ES200201836 A ES 200201836A ES 2199686 A1 ES2199686 A1 ES 2199686A1
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ES
Spain
Prior art keywords
photodetector
absolute position
graduation
translation
optical sensor
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
ES200201836A
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English (en)
Other versions
ES2199686B1 (es
Inventor
Calvo Tomas Morlanes
Luis Miguel Sanchez-Brea
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.)
Fagor Electrodomesticos SCL
Original Assignee
Fagor Electrodomesticos SCL
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.)
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Application filed by Fagor Electrodomesticos SCL filed Critical Fagor Electrodomesticos SCL
Priority to ES200201836A priority Critical patent/ES2199686B1/es
Publication of ES2199686A1 publication Critical patent/ES2199686A1/es
Application granted granted Critical
Publication of ES2199686B1 publication Critical patent/ES2199686B1/es
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

Sensor óptico (1) de la posición absoluta de un objeto móvil, mediante el uso de una única pista de graduación (2) pseudoaleatoria representando un código (Rm) binario, y un solo fotodetector (7) con una sola formación lineal de fotodiodos (K1- Kn) cuyo paso "p" es ligeramente diferente del paso "p" de la graduación (2) codificada. Las franjas de luz obtenidas como imagen sobre el fotodetector (7), son convertidas a una señal digital de puntos de intensidad de luz o "pixels" de lectura de la graduación (2), para introducir fotodiodos (Kf) ficticios en el fotodetector (7) y establecer una correspondencia unívoca entre marcas de graduación (2) y "pixels". Para la determinación de una medida de la posición absoluta (Xabs) son combinados los valores entero (Xente) y fraccionario (Xfrac) determinados mediante un procesador (8) de señales del sensor (1) siguiendo procesos paralelos.
ES200201836A 2002-08-02 2002-08-02 Sensor optico de la posicion absoluta, con un fotodetector de imagen. Expired - Fee Related ES2199686B1 (es)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES200201836A ES2199686B1 (es) 2002-08-02 2002-08-02 Sensor optico de la posicion absoluta, con un fotodetector de imagen.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES200201836A ES2199686B1 (es) 2002-08-02 2002-08-02 Sensor optico de la posicion absoluta, con un fotodetector de imagen.

Publications (2)

Publication Number Publication Date
ES2199686A1 true ES2199686A1 (es) 2004-02-16
ES2199686B1 ES2199686B1 (es) 2005-09-16

Family

ID=31897094

Family Applications (1)

Application Number Title Priority Date Filing Date
ES200201836A Expired - Fee Related ES2199686B1 (es) 2002-08-02 2002-08-02 Sensor optico de la posicion absoluta, con un fotodetector de imagen.

Country Status (1)

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ES (1) ES2199686B1 (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2758525T3 (es) 2008-12-17 2020-05-05 Fagor Automation S Coop Encoder de posición absoluta

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991010288A2 (en) * 1990-01-03 1991-07-11 Adrian March Limited Position sensor
US5889280A (en) * 1996-01-23 1999-03-30 Mitutoyo Corporation Apparatus for measuring displacement
US20010017349A1 (en) * 1999-12-23 2001-08-30 Wolfgang Holzapfel Position measuring system
US20020008195A1 (en) * 2000-07-03 2002-01-24 Mitutoyo Corporation Optical encoder and method of fabricating its sensor head

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991010288A2 (en) * 1990-01-03 1991-07-11 Adrian March Limited Position sensor
US5889280A (en) * 1996-01-23 1999-03-30 Mitutoyo Corporation Apparatus for measuring displacement
US20010017349A1 (en) * 1999-12-23 2001-08-30 Wolfgang Holzapfel Position measuring system
US20020008195A1 (en) * 2000-07-03 2002-01-24 Mitutoyo Corporation Optical encoder and method of fabricating its sensor head

Also Published As

Publication number Publication date
ES2199686B1 (es) 2005-09-16

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