CN201373749Y - Signal acquisition device of photoelectric absolute encoder - Google Patents
Signal acquisition device of photoelectric absolute encoder Download PDFInfo
- Publication number
- CN201373749Y CN201373749Y CN200920089131U CN200920089131U CN201373749Y CN 201373749 Y CN201373749 Y CN 201373749Y CN 200920089131 U CN200920089131 U CN 200920089131U CN 200920089131 U CN200920089131 U CN 200920089131U CN 201373749 Y CN201373749 Y CN 201373749Y
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- China
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- receiving tube
- reflecting prism
- total reflecting
- acquisition device
- signal acquisition
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Abstract
The utility model relates to a signal acquisition device of a photoelectric absolute encoder, belonging to a signal acquisition device used in angle displacement measurement. The signal acquisition device comprises a coding disk, a transmitting tube, static grating, a receiving tube and a total reflecting prism, wherein the transmitting tube is positioned at an incident end of the total reflecting prism; the receiving tube is positioned at a refraction end of the total reflecting prism; and the coding disk and the static grating are arranged between the refraction end of the total reflecting prism and the receiving tube. As the transmitting tube is positioned at the incident end of the total reflecting prism, the receiving tube is positioned at the refraction end of the total reflecting prism, and the transmitting tube and the receiving tube are arranged to form an included angle of 90 degrees, the volume of a measuring device is greatly reduced under the premise of ensuring the optical path length; and as the total reflecting prism totally reflects the light emitted by the transmitting tube, the horizontal distance is effectively utilized, thus shortening the distance. The signal acquisition device has the advantages of having simple structure, fundamentally solving the problem of long distance when the photoelectric transmitting tube and the photoelectric receiving tube are vertically and correspondingly arranged, reducing the volume on the absolute encoder using the metal coding disk, and improving the measuring precision.
Description
Technical field
The utility model relates to the signal pickup assembly that uses in a kind of angle displacement measurement, particularly a kind of photoelectricity type absolute encoder signal acquisition device.
Background technology
At present, people use the digital sense measuring device scrambler of a kind of shaft angle aspect automatic measure control, and scrambler has multiple sensing mode, and the photoelectric sensing mode is wherein a kind of, and the scrambler that utilizes the photoelectric sensing mode to produce is called photoelectric encoder.Photoelectric encoder includes code-wheel, photoemission cell and photoelectric receiving tube, vertical with photoelectric receiving tube and corresponding two of being installed in code-wheel of photoemission cell, described code-wheel is a lighttight sheet discs, the interrupted concentric groove of multi-turn is arranged on sheet discs, concentric groove is the penetrating groove that certain rule is arranged, and power valve sends Infrared, through behind the penetrating groove, the photoelectric tube received signal, thus demonstrate measured numerical value.The light that power valve sees through code-disc is best with parallel rays.On luminous road more in short-term, the diffraction of light effect, during the absolute encoder code-disc of making by sheet metal, the signal resolution that receives is lower; Can realize the approximate parallel of light after elongating light path, but the length of scrambler can increase, volume increases, and the volume of measurement mechanism is increased, and is unfavorable for installation.
The utility model content
The purpose of this utility model is to provide a kind of: do absolute scrambler code-disc with sheet metal, make the signal resolution height that receives, the photoelectricity type absolute encoder signal acquisition device that the measurement mechanism volume is little.
The purpose of this utility model is achieved in that this signal pickup assembly includes code-wheel, power valve, quiet grating, receiving tube and total reflection prism, power valve is positioned at the incident end of total reflection prism, receiving tube is positioned at the refraction end of total reflection prism, between total reflection prism refraction end and receiving tube code-wheel and quiet grating is arranged.
Beneficial effect: owing to adopted such scheme, power valve is positioned at the incident end of total reflection prism, receiving tube is positioned at the refraction end of total reflection prism, power valve and receiving tube are 90 degree and install, under the prerequisite that guarantees optical path length, therefore dwindled the volume of measurement mechanism greatly, because total reflection prism has carried out total reflection to the light that power valve sends, effectively utilized horizontal range, power valve still is equivalent to corresponding one by one with receiving tube, light path has shortened 15 mm distance on the rectilinear direction perpendicular to the code-disc plane, reached the purpose of this utility model.Advantage: this harvester is simple in structure, has fundamentally solved the long problem of vertical with photoelectric receiving tube and the corresponding mounting distance of photoemission cell, on the absolute encoder that uses metal code disk, has dwindled volume, has improved measuring accuracy.
Description of drawings
Fig. 1 is a structural drawing of the present utility model.
Fig. 2 is a user mode structural drawing of the present utility model.
Embodiment
Embodiment 1: among Fig. 1, this signal pickup assembly includes code-wheel 1, power valve 2, quiet grating 4, receiving tube 5 and total reflection prism 3, power valve 2 is positioned at the incident end of total reflection prism 3, receiving tube 5 is positioned at the refraction end of total reflection prism 3, between total reflection prism refraction end and receiving tube code-wheel 1 and quiet grating 4 is arranged.
Embodiment 2: among Fig. 2, this signal pickup assembly includes power valve 2, total reflection prism 3, code-wheel 1, quiet grating 4, receiving tube, power valve and total reflection prism are connected on the power valve substrate, and quiet grating and receiving tube are connected on the receiving tube substrate, and code-disc is a rotating moving part.Also be connected with connector 8 between power valve substrate 6 and receiving tube substrate 7, power valve is positioned at the incident end of total reflection prism, and receiving tube is positioned at the refraction end of total reflection prism, between total reflection prism refraction end and receiving tube code-disc 1 and quiet grating 4 is arranged.
Claims (1)
1, a kind of photoelectricity type absolute encoder signal acquisition device, it is characterized in that: this signal pickup assembly includes code-wheel, power valve, quiet grating, receiving tube and total reflection prism, power valve is positioned at the incident end of total reflection prism, receiving tube is positioned at the refraction end of total reflection prism, between total reflection prism refraction end and receiving tube code-wheel and quiet grating is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920089131U CN201373749Y (en) | 2009-03-14 | 2009-03-14 | Signal acquisition device of photoelectric absolute encoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920089131U CN201373749Y (en) | 2009-03-14 | 2009-03-14 | Signal acquisition device of photoelectric absolute encoder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201373749Y true CN201373749Y (en) | 2009-12-30 |
Family
ID=41499833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920089131U Expired - Fee Related CN201373749Y (en) | 2009-03-14 | 2009-03-14 | Signal acquisition device of photoelectric absolute encoder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201373749Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107727004A (en) * | 2017-11-13 | 2018-02-23 | 深圳中天云隼科技有限公司 | Angular transducer |
-
2009
- 2009-03-14 CN CN200920089131U patent/CN201373749Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107727004A (en) * | 2017-11-13 | 2018-02-23 | 深圳中天云隼科技有限公司 | Angular transducer |
| CN107727004B (en) * | 2017-11-13 | 2023-11-03 | 深圳中天云隼科技有限公司 | Angle sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091230 Termination date: 20130314 |