JPS56162011A - Conversion system for mechanical displacement to electric signal and converting device - Google Patents
Conversion system for mechanical displacement to electric signal and converting deviceInfo
- Publication number
- JPS56162011A JPS56162011A JP6591480A JP6591480A JPS56162011A JP S56162011 A JPS56162011 A JP S56162011A JP 6591480 A JP6591480 A JP 6591480A JP 6591480 A JP6591480 A JP 6591480A JP S56162011 A JPS56162011 A JP S56162011A
- Authority
- JP
- Japan
- Prior art keywords
- photodetectors
- optical axis
- code plate
- mechanical displacement
- electric signal
- 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.)
- Pending
Links
- 238000006073 displacement reaction Methods 0.000 title abstract 3
- 238000006243 chemical reaction Methods 0.000 title 1
- 230000003287 optical effect Effects 0.000 abstract 5
- 230000001419 dependent effect Effects 0.000 abstract 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optical Transform (AREA)
Abstract
PURPOSE:To convert mechanical displacement to an electric signal accurately without the influence of the characteristic change of a light emitting element and a photodetector and the fluctuation of a power source voltage, by using such code plate that the sum of irradiation areas for plural photodetectors becomes constant approximately. CONSTITUTION:A pair of photodetectors 1 and 2 are arranged with the optical axis of an LED3 as the symmetrical axis, and a code plate 4 is arranged in the middle of the optical path betweeen these photodetectors and the LED3, and the code plate 4 has a shadow part consisting of a light transmitting part and a light shielding part interposing the optical axis, and the shadow part is moved for the optical axis to change irradiation areas of the photodetectors. The sum of irradiation areas for the photodetectors 1 and 2 is made constant approximately to obtain a digital output, which is proportional to f(x) corresponding to mechanical displacement (x) due to the code plate 4 on the optical axis, or an analogue output, which is proportional to f(x) dependent upon only the power source potential, as the output of the photodetectors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6591480A JPS56162011A (en) | 1980-05-20 | 1980-05-20 | Conversion system for mechanical displacement to electric signal and converting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6591480A JPS56162011A (en) | 1980-05-20 | 1980-05-20 | Conversion system for mechanical displacement to electric signal and converting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56162011A true JPS56162011A (en) | 1981-12-12 |
Family
ID=13300707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6591480A Pending JPS56162011A (en) | 1980-05-20 | 1980-05-20 | Conversion system for mechanical displacement to electric signal and converting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56162011A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1987006338A1 (en) * | 1986-04-15 | 1987-10-22 | Fanuc Ltd | Optical rotary encoder |
-
1980
- 1980-05-20 JP JP6591480A patent/JPS56162011A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1987006338A1 (en) * | 1986-04-15 | 1987-10-22 | Fanuc Ltd | Optical rotary encoder |
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