Graeffe et al., 2005 - Google Patents
An online laser caliper measurement for the paper industryGraeffe et al., 2005
View PDF- Document ID
- 3652514056073974804
- Author
- Graeffe J
- Nuyan S
- Publication year
- Publication venue
- Optical Measurement Systems for Industrial Inspection IV
External Links
Snippet
A non-contacting online caliper measurement has been papermakers' dream for over two decades. Currently, paper thickness is measured using buttons contacting the paper web on both sides. In such a configuration, paper thickness is assumed to be the distance between …
- 238000005259 measurement 0 title abstract description 74
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B2210/00—Aspects not specifically covered by any group under G01B, e.g. of wheel alignment, caliper-like sensors
- G01B2210/40—Caliper-like sensors
- G01B2210/44—Caliper-like sensors with detectors on both sides of the object to be measured
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by the preceding groups
- G01N33/34—Investigating or analysing materials by specific methods not covered by the preceding groups paper
- G01N33/346—Investigating or analysing materials by specific methods not covered by the preceding groups paper paper sheets
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical means
- G01B11/02—Measuring arrangements characterised by the use of optical means for measuring length, width or thickness
- G01B11/06—Measuring arrangements characterised by the use of optical means for measuring length, width or thickness for measuring thickness, e.g. of sheet material
- G01B11/0691—Measuring arrangements characterised by the use of optical means for measuring length, width or thickness for measuring thickness, e.g. of sheet material of objects while moving
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical means
- G01B11/02—Measuring arrangements characterised by the use of optical means for measuring length, width or thickness
- G01B11/026—Measuring arrangements characterised by the use of optical means for measuring length, width or thickness by measuring distance between sensor and object
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/86—Investigating moving sheets
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic means
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic means for measuring length, width or thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical means
- G01B11/30—Measuring arrangements characterised by the use of optical means for measuring roughness or irregularity of surfaces
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G9/00—Other accessories for paper-making machines
- D21G9/0009—Paper-making control systems
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2193380C (en) | Method and apparatus for measuring and controlling the surface characteristics of sheet materials such as paper | |
| FI127396B (en) | A detector for monitoring a moving web and a method for measuring a moving web | |
| EP0311507B1 (en) | Process for continuous determination of paper strength | |
| EP2844954B1 (en) | System and method for correcting caliper measurements of sheet products in sheet manufacturing or processing systems | |
| US20070145307A1 (en) | Optical translation of triangulation position measurement | |
| US7319521B2 (en) | Measuring device | |
| CN104677315B (en) | Silicon chip surface irregularity degree measuring method | |
| WO2013044358A1 (en) | Method of measuring the thickness of a moving web | |
| US5138878A (en) | Fiber orientation sensor | |
| EP0890078A1 (en) | Method and apparatus for optical alignment of a measuring head in an x-y plane | |
| Graeffe et al. | An online laser caliper measurement for the paper industry | |
| Sung et al. | Applications of thickness and apparent density mapping by laser profilometry | |
| US7345772B2 (en) | Optical triangulation device and method of measuring a variable of a web using the device | |
| WO1996035112A1 (en) | Sheet stabilizer for optical sensor | |
| Salo et al. | Paper bending stiffness and web tension measurement from a running web using a vacuum and computer imaging | |
| JP2001133242A (en) | Thickness measuring apparatus | |
| CA2300115C (en) | Method for operating a traversing sensor apparatus | |
| EP0564558B1 (en) | Fiber orientation sensor | |
| Graeffe | Calibration method for accurate optical measurement of thickness profile for the paper industry | |
| Hughes et al. | Two-sided laser device for online paper caliper measurement and control | |
| Naimohasses et al. | Innovation in action | |
| WO2003056273A1 (en) | Arrangement for measuring sheet | |
| Reber | Non-contacting, non-nuclear caliper sensor for online direct thickness gauging | |
| Komppa | Modern Paper Quality Control |