A time-of-flight laser sensor for sheet flutter analysis

Matti Koskinen; Raimo Ahola; Juha Kostamovaara; Risto Myllylä

A time-of-flight laser sensor for sheet flutter analysis

Matti Koskinen
, Raimo Ahola
, Juha Kostamovaara
, Risto Myllylä

VTT Technical Research Centre of Finland

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific

Abstract

A sensor is described for the continuous monitoring of sheet flutter in paper machines, employing a method in which the momentary transverse position of the measurement point on the travelling paper web is extracted from alterations in the time-of-flight of light pulses. Sub-millimetre resolution (0.2 mm with a signal bandwidth of 200 Hz) is attained by using a very high pulse repetition rate (1.3 MHz), high speed automatic gain control electronics and an analog time-to-amplitude converter. The sensor has a separate optomechanical sensing head at the end of a 20 m optical cable, enabling measurement in demanding industrial environments.

Original language	English
Title of host publication	ISA Calgary Symposium 1989
Publisher	ISA Services Inc
Pages	305-317
ISBN (Print)	978-1-55617-202-1
Publication status	Published - 1989
MoE publication type	B3 Non-refereed article in conference proceedings
Event	ISA Calgary '89 Symposium - Calgary, Canada Duration: 3 Apr 1989 → 5 Apr 1989

Conference

Conference	ISA Calgary '89 Symposium
Country/Territory	Canada
City	Calgary
Period	3/04/89 → 5/04/89

Cite this

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title = "A time-of-flight laser sensor for sheet flutter analysis",

abstract = "A sensor is described for the continuous monitoring of sheet flutter in paper machines, employing a method in which the momentary transverse position of the measurement point on the travelling paper web is extracted from alterations in the time-of-flight of light pulses. Sub-millimetre resolution (0.2 mm with a signal bandwidth of 200 Hz) is attained by using a very high pulse repetition rate (1.3 MHz), high speed automatic gain control electronics and an analog time-to-amplitude converter. The sensor has a separate optomechanical sensing head at the end of a 20 m optical cable, enabling measurement in demanding industrial environments.",

author = "Matti Koskinen and Raimo Ahola and Juha Kostamovaara and Risto Myllyl{\"a}",

year = "1989",

language = "English",

isbn = "978-1-55617-202-1",

pages = "305--317",

booktitle = "ISA Calgary Symposium 1989",

publisher = "ISA Services Inc",

address = "United States",

note = "ISA Calgary '89 Symposium ; Conference date: 03-04-1989 Through 05-04-1989",

}

TY - GEN

T1 - A time-of-flight laser sensor for sheet flutter analysis

AU - Koskinen, Matti

AU - Ahola, Raimo

AU - Kostamovaara, Juha

AU - Myllylä, Risto

PY - 1989

Y1 - 1989

N2 - A sensor is described for the continuous monitoring of sheet flutter in paper machines, employing a method in which the momentary transverse position of the measurement point on the travelling paper web is extracted from alterations in the time-of-flight of light pulses. Sub-millimetre resolution (0.2 mm with a signal bandwidth of 200 Hz) is attained by using a very high pulse repetition rate (1.3 MHz), high speed automatic gain control electronics and an analog time-to-amplitude converter. The sensor has a separate optomechanical sensing head at the end of a 20 m optical cable, enabling measurement in demanding industrial environments.

AB - A sensor is described for the continuous monitoring of sheet flutter in paper machines, employing a method in which the momentary transverse position of the measurement point on the travelling paper web is extracted from alterations in the time-of-flight of light pulses. Sub-millimetre resolution (0.2 mm with a signal bandwidth of 200 Hz) is attained by using a very high pulse repetition rate (1.3 MHz), high speed automatic gain control electronics and an analog time-to-amplitude converter. The sensor has a separate optomechanical sensing head at the end of a 20 m optical cable, enabling measurement in demanding industrial environments.

M3 - Conference article in proceedings

SN - 978-1-55617-202-1

SP - 305

EP - 317

BT - ISA Calgary Symposium 1989

PB - ISA Services Inc

T2 - ISA Calgary '89 Symposium

Y2 - 3 April 1989 through 5 April 1989

ER -

A time-of-flight laser sensor for sheet flutter analysis

Abstract

Conference

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Cite this