IT1263789B - Metodo e apparecchio comprendente due sensori magnetici ed un misuratore laser per misurare lo spessore di un film - Google Patents

Metodo e apparecchio comprendente due sensori magnetici ed un misuratore laser per misurare lo spessore di un film

Info

Publication number
IT1263789B
IT1263789B ITMI930092A ITMI930092A IT1263789B IT 1263789 B IT1263789 B IT 1263789B IT MI930092 A ITMI930092 A IT MI930092A IT MI930092 A ITMI930092 A IT MI930092A IT 1263789 B IT1263789 B IT 1263789B
Authority
IT
Italy
Prior art keywords
film
thickness
magnetic sensors
measure
distance
Prior art date
Application number
ITMI930092A
Other languages
English (en)
Inventor
Alessandro Masotti
Original Assignee
Alessandro Masotti
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 Alessandro Masotti filed Critical Alessandro Masotti
Priority to ITMI930092A priority Critical patent/IT1263789B/it
Publication of ITMI930092A0 publication Critical patent/ITMI930092A0/it
Priority to AT94100712T priority patent/ATE158075T1/de
Priority to EP94100712A priority patent/EP0607938B1/en
Priority to DE69405415T priority patent/DE69405415T2/de
Publication of ITMI930092A1 publication Critical patent/ITMI930092A1/it
Application granted granted Critical
Publication of IT1263789B publication Critical patent/IT1263789B/it

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
    • G01B21/08—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness for measuring thickness

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

Per misurare lo spessore di un film sottile l'invenzione prevede un'apparecchiatura comprendente un cilindro metallico sul quale viene fatto passare il film ed una testa di scansione che si muove lungo un percorso parallelo all'asse del cilindro e che comprende una coppia di sensori magnetici accoppiati ad un sensore laser posto fra di essi. I sensori magnetici rilevano la distanza della superficie del cilindro mentre il laser rileva la distanza della superficie del film. Dalle letture dei sensori magnetici si ricava, per interpolazione, la distanza della superficie del cilindro nella posizione in corrispondenza della quale si effettua la lettura laser e dalla differenza fra questa e il valore precedente si ricava lo spessore del film.
ITMI930092A 1993-01-22 1993-01-22 Metodo e apparecchio comprendente due sensori magnetici ed un misuratore laser per misurare lo spessore di un film IT1263789B (it)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ITMI930092A IT1263789B (it) 1993-01-22 1993-01-22 Metodo e apparecchio comprendente due sensori magnetici ed un misuratore laser per misurare lo spessore di un film
AT94100712T ATE158075T1 (de) 1993-01-22 1994-01-19 Verfahren und vorrichtung, zwei magnetische sensoren und eine laser-messeinrichtung enthaltend, für das messen der dicke eines filmes
EP94100712A EP0607938B1 (en) 1993-01-22 1994-01-19 Method and apparatus comprising two magnetic sensors and one laser meter for measuring the thickness of a film
DE69405415T DE69405415T2 (de) 1993-01-22 1994-01-19 Verfahren und Vorrichtung, zwei magnetische Sensoren und eine Laser-Messeinrichtung enthaltend, für das Messen der Dicke eines Filmes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI930092A IT1263789B (it) 1993-01-22 1993-01-22 Metodo e apparecchio comprendente due sensori magnetici ed un misuratore laser per misurare lo spessore di un film

Publications (3)

Publication Number Publication Date
ITMI930092A0 ITMI930092A0 (it) 1993-01-22
ITMI930092A1 ITMI930092A1 (it) 1994-07-22
IT1263789B true IT1263789B (it) 1996-08-29

Family

ID=11364718

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI930092A IT1263789B (it) 1993-01-22 1993-01-22 Metodo e apparecchio comprendente due sensori magnetici ed un misuratore laser per misurare lo spessore di un film

Country Status (4)

Country Link
EP (1) EP0607938B1 (it)
AT (1) ATE158075T1 (it)
DE (1) DE69405415T2 (it)
IT (1) IT1263789B (it)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1283347B1 (it) * 1996-07-29 1998-04-17 Electronic Systems Spa Metodo ed apperecchiatura per misurare con precisione un film che avanza,su tutta la sua superficie
AT408580B (de) * 1997-11-21 2002-01-25 Bierbaumer Hans Peter Dr Messvorrichtung zumindest zur ermittlung der dicke einer bahn sowie verfahren hierfür
US20020190710A1 (en) * 2001-02-13 2002-12-19 Asm Automation Sensorik Messtechnik Gmbh Magnetic length measuring device
EP2837484B1 (en) 2013-08-14 2020-10-21 Electronic Systems S.p.A. Apparatus for automatically analyzing extruded films

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61254812A (ja) * 1985-05-08 1986-11-12 Meisan Kk 非磁性体シ−ト厚さ連続測定装置
JPH0648185B2 (ja) * 1988-10-12 1994-06-22 明産株式会社 シート厚さ測定装置
US4977853A (en) * 1989-06-01 1990-12-18 E. I. Du Pont De Nemours And Company Non-contact wet or dry film thickness measuring device
US5485082A (en) * 1990-04-11 1996-01-16 Micro-Epsilon Messtechnik Gmbh & Co. Kg Method of calibrating a thickness measuring device and device for measuring or monitoring the thickness of layers, tapes, foils, and the like

Also Published As

Publication number Publication date
DE69405415T2 (de) 1998-01-22
ITMI930092A0 (it) 1993-01-22
ITMI930092A1 (it) 1994-07-22
EP0607938A1 (en) 1994-07-27
ATE158075T1 (de) 1997-09-15
EP0607938B1 (en) 1997-09-10
DE69405415D1 (de) 1997-10-16

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970122