CA2303629C - Capteur optique a deplacement differentiel - ii - Google Patents
Capteur optique a deplacement differentiel - ii Download PDFInfo
- Publication number
- CA2303629C CA2303629C CA002303629A CA2303629A CA2303629C CA 2303629 C CA2303629 C CA 2303629C CA 002303629 A CA002303629 A CA 002303629A CA 2303629 A CA2303629 A CA 2303629A CA 2303629 C CA2303629 C CA 2303629C
- Authority
- CA
- Canada
- Prior art keywords
- light
- optical patterns
- patterns
- dual
- sensors
- 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.)
- Expired - Fee Related
Links
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 35
- 230000003287 optical effect Effects 0.000 title claims description 46
- 230000000295 complement effect Effects 0.000 claims abstract description 18
- 230000009977 dual effect Effects 0.000 claims description 26
- 230000000670 limiting effect Effects 0.000 claims description 5
- 230000002596 correlated effect Effects 0.000 claims description 4
- 230000002238 attenuated effect Effects 0.000 claims description 2
- 238000012887 quadratic function Methods 0.000 claims 1
- 238000005286 illumination Methods 0.000 description 27
- 230000008901 benefit Effects 0.000 description 6
- 230000002441 reversible effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000010363 phase shift Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- VAYOSLLFUXYJDT-RDTXWAMCSA-N Lysergic acid diethylamide Chemical compound C1=CC(C=2[C@H](N(C)C[C@@H](C=2)C(=O)N(CC)CC)C2)=C3C2=CNC3=C1 VAYOSLLFUXYJDT-RDTXWAMCSA-N 0.000 description 1
- 240000005893 Pteridium aquilinum Species 0.000 description 1
- 235000009936 Pteridium aquilinum Nutrition 0.000 description 1
- 230000000570 adjustive effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- 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
- G01D5/26—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 characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—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 characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—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 characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/347—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 characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using displacement encoding scales
- G01D5/34776—Absolute encoders with analogue or digital scales
-
- 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
- G01D5/26—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 characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—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 characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—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 characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
-
- 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
- G01D2205/00—Indexing scheme relating to details of means for transferring or converting the output of a sensing member
- G01D2205/70—Position sensors comprising a moving target with particular shapes, e.g. of soft magnetic targets
- G01D2205/77—Specific profiles
- G01D2205/775—Tapered profiles
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/282,153 US6020967A (en) | 1999-03-31 | 1999-03-31 | Differential displacement optical sensor |
| US09/282,153 | 1999-03-31 | ||
| US49604200A | 2000-02-02 | 2000-02-02 | |
| US09/496,042 | 2000-02-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2303629A1 CA2303629A1 (fr) | 2000-09-30 |
| CA2303629C true CA2303629C (fr) | 2007-11-20 |
Family
ID=26961274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002303629A Expired - Fee Related CA2303629C (fr) | 1999-03-31 | 2000-03-31 | Capteur optique a deplacement differentiel - ii |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU3546800A (fr) |
| CA (1) | CA2303629C (fr) |
| WO (1) | WO2000060315A1 (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1209448A1 (fr) * | 2000-11-23 | 2002-05-29 | Abb Research Ltd. | Codeur optique angulaire ou linéaire |
| FR2926633B1 (fr) * | 2008-01-18 | 2010-12-24 | Crouzet Automatismes | Capteur optique |
| WO2012159771A2 (fr) * | 2011-05-26 | 2012-11-29 | Ghanem Husam | Capteur ou unité de mesure avec capteur comportant un convertisseur mécanique-électrique |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3399347A (en) * | 1964-01-09 | 1968-08-27 | Bausch & Lomb | Photoelectric system for generating a signal proportional to the movement of a meter |
| DE2416399A1 (de) * | 1974-04-04 | 1975-10-16 | Schwarzer Gmbh Fritz | Elektronische schaltung fuer die nachfuehreinrichtung eines registriersystems |
| GB1563200A (en) * | 1975-10-16 | 1980-03-19 | Keystone Int | Position-detecting systems |
| DK137187A (da) * | 1986-03-21 | 1987-09-22 | Elitex Zavody Textilniho | Optoelektronisk bevaegelsesfoeler |
-
2000
- 2000-03-31 WO PCT/CA2000/000338 patent/WO2000060315A1/fr active Application Filing
- 2000-03-31 AU AU35468/00A patent/AU3546800A/en not_active Abandoned
- 2000-03-31 CA CA002303629A patent/CA2303629C/fr not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2303629A1 (fr) | 2000-09-30 |
| AU3546800A (en) | 2000-10-23 |
| WO2000060315A1 (fr) | 2000-10-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20130402 |