CN202119788U - Photoelectric encoder - Google Patents
Photoelectric encoder Download PDFInfo
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- CN202119788U CN202119788U CN2011202125075U CN201120212507U CN202119788U CN 202119788 U CN202119788 U CN 202119788U CN 2011202125075 U CN2011202125075 U CN 2011202125075U CN 201120212507 U CN201120212507 U CN 201120212507U CN 202119788 U CN202119788 U CN 202119788U
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Abstract
The utility model provides a photoelectric encoder installed on a rotating main shaft of a motor, comprising a sensor. The photoelectric encoder synchronically rotates with the rotating main shaft of the motor to generate rotation pulses, and outputs a certain pulse signals to reflect angular displacement situation of the rotation main shaft. The photoelectric encoder is widely used in devices which require angle detection, such as a numerical control machine tool, a rotary table, a servo transmission device, a robot, a radar, a military object determination device, etc. The photoelectric encoder is small in size, high in precision, reliable in work and digitalized in interface, and creates a superior condition for the development of a high precision numerical control servo system in the future.
Description
Technical field
The utility model relates to the detection technique field, relates in particular to a kind of photoelectric encoder that is used to detect angular velocity.
Background technology
In automation control systems such as numerically-controlled machine, automatic assembly line, elevator, generally all use photoelectric encoder to carry out the detection of angular velocity.Said photoelectric encoder is a kind of sensor that the geometry of machinery displacement on the output shaft is converted to pulse or digital quantity through opto-electronic conversion.It normally adopts round grating, through opto-electronic conversion, converts the corner displacement of tumbler to electric impulse signal, judges the angular velocity of tumbler through measuring electric impulse signal then.
At present; The Hall scrambler that photoelectric encoder relatively more commonly used is to use Hall element to be made; Its principle of work is to differ 120 ° position a circuferential spacing angle 3 Hall elements are installed; Hall element becomes current signal to the changes of magnetic field information translation of sensing in the electric machine rotary magnetic field, again through after level amplify shaping after output pulse signal.
Yet along with Mechanical & Electrical Transmission, the servocontrol develop rapidly in digitizing, high precision direction, existing photoelectric encoder is because control accuracy is low, and response speed is slow, can't satisfy the requirement of angle speed pick-up unit.
In view of this, how a kind of new photoelectric encoder that can adapt to digitizing, high precision int develop rapidly demand is provided, becomes the problem that needs to be resolved hurrily at present then.
The utility model content
To the shortcoming of above-mentioned prior art, the purpose of the utility model is to provide a kind of photoelectric encoder, and it is low to be used to overcome photoelectric encoder control accuracy of the prior art, and response speed waits problem slowly.
In order to achieve the above object, the utility model has been taked following technical scheme:
A kind of photoelectric encoder is installed on the rotating spindle of motor, wherein, comprising:
Shell, it is fixed on the main body base;
Signal amplifies plate, and it is connected with main body base through second securing member;
Sensor, it amplifies plate with signal and is connected;
Main shaft, it is vertically mounted in the through hole of main body base, and the upper end of said main shaft fixedly installs a moving grating
Code-disc, the lower end of said main shaft connects a lock sleeve through the 3rd securing member, said lock sleeve and rotation
Main shaft links to each other;
Main body base, the top of the center pit of said main body base links to each other with head bearing, and the below of said center pit connects
Connect lower bearing, fixing certain grating on the pilot hole of said main body base, the below of said main body base is passed through
First securing member connects the led circuit plate, and said led circuit plate is provided with infrared transmitting tube;
Fixed mount, it is arranged on the below of main body base, links to each other with main body base through the 4th securing member, and said fixed mount is also fixed through the 5th securing member and motor.
Described photoelectric encoder wherein, also comprises a steel disc, and said steel disc is fixed on moving grating encoder
On, a clasp is set on the said steel disc, it is used for and the main shaft fastening.
Described photoelectric encoder wherein, is provided with UV glue with the main shaft connecting portion on the said clasp.
Described photoelectric encoder, wherein, said second securing member is a holding screw, its number is 3.
Described photoelectric encoder, wherein, the precision of said sensor is 2500 lines/circumference, its response time is 30ns.
Described photoelectric encoder, wherein, said sensor comprises a sensing chip and a pcb board, said sensing chip nation fixes on the pcb board.
Described photoelectric encoder, wherein, said sensing chip is a single-chip structure, its set inside has 12 silicon photodiodes.
Described photoelectric encoder, wherein, the length of said sensing chip is 4.800mm, and wide is 3.800mm, and thickness is 0.305mm.
Described photoelectric encoder, wherein, said pcb board is a double face copper, and it is of a size of 10.40mm X 8.90mm, and thickness is 2.00mm.
Described photoelectric encoder, wherein, the both sides of said pcb board respectively have row's semicircle to cross golden hole, and said pcb board welds together through crossing golden hole and signal amplification plate.
The photoelectric encoder that the utility model provides; Be installed on the rotating spindle of motor; It comprises a sensor, and the rotating spindle of said photoelectric encoder and motor rotates synchronously and produces rotary pulsedly, exports the angular displacement situation that a certain amount of pulse signal reflects rotating spindle then.It is little that photoelectric encoder of the present invention has a volume, and precision is high, reliable operation, advantages such as interface digitizing.Supremacy clause has been created in development to following high precision numerical control servo-drive system.
Description of drawings
Fig. 1 is the STRUCTURE DECOMPOSITION synoptic diagram of the photoelectric encoder of the utility model embodiment.
Fig. 2 is the fundamental diagram of the photoelectric encoder of the utility model.
Fig. 3 is the electrical schematic diagram of the sensing chip of the utility model embodiment.
Embodiment
The utility model provides a kind of photoelectric encoder, is installed on the rotating spindle of motor.For the purpose, technical scheme and the effect that make the utility model is clearer, clear and definite, below with reference to accompanying drawing and give an actual example to the utility model further explain.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
See also Fig. 1, Fig. 1 is the exploded view of the photoelectric encoder of the utility model, and is as shown in the figure, and said photoelectric encoder comprises: shell 100, signal amplify plate 200, sensor 300, main shaft 400, main body base 500 and fixed mount 600.
Specifically; Said shell 100 is (in the utility model embodiment; Said shell is a plastic casing) be fixed on the main body base 500; Said signal amplifies plate 200 and is connected with main body base 500 through second securing member 210 (in the utility model embodiment, said second securing member is 3 and is used for fixing the fastening Luo silk that signal amplifies plate).Said sensor 300 amplifies plate 200 with signal and electrically connects.Said main shaft 400 is vertically mounted in the center pit 510 of main body base 500; The upper end of said main shaft 400 is set with a moving grating encoder 410; The lower end of said main shaft 400 through the 3rd securing member 420 (in the present embodiment; Said the 3rd securing member is the fastening Luo silk that is used for fastening main shaft) connect a lock sleeve 430, said lock sleeve 430 link to each other with the rotating spindle of motor (in the present embodiment, fastening) through the rotating spindle of two fastening Luo silks 440 of motor shaft and motor.The top of the center pit 510 of said main body base 500 links to each other with head bearing 520; The bottom of said center pit 510 links to each other with lower bearing 530; The upper fixed of the pilot hole 540 of said main body base 500 has certain grating 550; First securing member 560 is passed through (in the utility model embodiment in the below of said main body base 500; Said first securing member is two fastening Luo silks that are used for fixing led board) connect led circuit plate 570, said led circuit plate 570 is provided with infrared transmitting tube 580 (being infrarede emitting diode).Said fixed mount 600 is located at the below of main body base 500; And pass through the 4th securing member 610 (in the utility model embodiment; Said the 4th securing member is two fastening Luo silks that are used for fastening fixed mount) link to each other with main body base 500; Said fixed mount 600 also is fixed together with motor through the 5th securing member 620 (in the utility model embodiment, said the 5th securing member is two the Luo silk is installed).
Please continue to consult Fig. 1, the photoelectric encoder of the utility model can also comprise a steel disc 700, in the present embodiment; Said steel disc is plum blossom steel disc (cross section is blossom type); It is fixed on the moving grating encoder 410, and the top of steel disc 700 also is provided with a clasp 800, with the main shaft fastening.Further, touch the position with main shaft on the said clasp and can be provided with UV glue, to reinforce and being connected of main shaft.
Introduce the installation process of the photoelectric encoder of the utility model down below, so that the clearer photoelectric encoder of understanding the utility model intuitively.Please continue to consult Fig. 1, said installation process may further comprise the steps:
1, the top of head bearing 520 from main body base 500 is pressed in the center pit 510, the below of lower bearing 530 from center pit 510 is pressed in the center pit 510;
2, will decide the pilot hole 540 that grating 550 is aimed on the main body base, further, can fix with UV glue;
3, infrared transmitting tube 580 is installed on the led circuit plate 570, led circuit plate 580 is locked on the correspondence position of main body base 500 belows with first securing member 560 again;
4, will move the upper end that grating encoder 410 keeps flat main shaft 400, on main shaft 400, put plum blossom steel disc 700, and flatten, and use clasp 800 again, and coat the reinforcing of UV glue touching the position itself and main shaft 400 fastenings;
5, main shaft 400 vertically is pressed into main body base 500 from top to bottom, again below put lock sleeve 430, and the 3rd securing member 420.
6, fixed mount 600 usefulness the 4th securing member 610 is locked on the below correspondence position of main body base 500.
7, sensor 300 is welded on the correspondence position of signal amplification plate 200, with second securing member 210 signal is amplified plate 200 again and be locked on the corresponding position, main body base 500 tops;
8, with plastic casing 100 fastening from top to bottom on main body base, accomplish assembling.
The principle of work of the photoelectric encoder of the utility model is as shown in Figure 2, and it is made up of moving grating encoder and sensor (said sensor further comprises pick-up unit, amplification and rectification circuit).Moving grating encoder is on the plectane of certain diameter, to open several slots five equilibrium.Moving grating encoder links together with motor main shaft through main shaft, lock sleeve etc.; During the motor rotation; Moving grating encoder and motor are with the speed rotation; Decide grating from the infrared light process that infrarede emitting diode emits, shine on the photoelectric sensor pick-up unit of silicon photodiode arrangement element composition, detect the some faint pulse small-signals of output; Again through after the amplification and rectification circuit of level amplify the pulse signal of shaping output rule, just can reflect the rotating speed of current motor through the number of calculating per second photoelectric encoder output pulse.
Further, in order to judge sense of rotation better, moving grating encoder also provides A, the pulse signal and a pair of zero-point positioning Z signal of two pairs of phase phasic differences of B, 90 degree, and the angle of phase phasic difference is the real time position of reflection motor with respect to the space.Moving grating encoder can also provide U, V, and W three-phase locus differs the pulse signal of 120 degree.Because the ultimate principle of the photoelectric encoder of the utility model is identical with Hall element of the prior art, simple in order to describe, superfluous having stated no longer just here.
Introduce the sensor of the photoelectric encoder of the utility model below.Why control accuracy is high for the photoelectric encoder of the utility model, and speed is fast, exactly because its sensor has adopted a high-precision sensing chip.It has the precision of 2500 lines/circumference, and the response time (ON/OFF) is (30/30) ns.Described sensing chip is the structure of a single-chip, and this wafer inside is integrated with 12 high performance silicon photodiodes, and these 12 silicon photodiodes are arranged in order by the specific structure distribution rule and formed.The physical dimension of wafer is 4.800mm * 3.800mm, and thickness is 0.305mm.The electrical schematic diagram of described sensing chip is as shown in Figure 3, and wherein the 1st pin is empty; The 2nd, 3,4,5,6,7,8,9,10,11,12,13 pins are the anode output end mouth of inner silicon photodiode, and the 14th pin is the common cathode output port of inner silicon photodiode.It is transferred to the signal amplification circuit plate after can converting the photosignal of receiving to current signal well.
In addition, described sensing chip utilizes high precision apparatus nation to fix on the pcb board, and pcb board is of a size of 10.40mm * 8.90mm, and thickness is 2.00mm.The material of pcb board is the FR-4 double face copper.Further, row's semicircle can also respectively be set at the right and left of pcb board cross golden hole, so that sensor crosses golden hole through these and the signal amplification circuit plate welds together.
The photoelectric encoder that the utility model provides; Be installed on the rotating spindle of motor; It comprises a sensor, and the rotating spindle of said photoelectric encoder and motor rotates synchronously and produces rotary pulsedly, exports the angular displacement situation that a certain amount of pulse signal reflects rotating spindle then.It is widely used in numerically-controlled machine, panoramic table, servodrive, robot, radar, military target mensuration etc. needs in the device and equipment of detection angles.It is little that photoelectric encoder of the present invention also has a volume, and precision is high, reliable operation, advantages such as interface digitizing.Supremacy clause has been created in development to following high precision numerical control servo-drive system.
It is understandable that; Concerning those of ordinary skills; Can be equal to replacement or change according to the technical scheme and the utility model design thereof of the utility model, and all these changes or replacement all should belong to the protection domain of the appended claim of the utility model.
Claims (10)
1. a photoelectric encoder is installed on the rotating spindle of motor, it is characterized in that, comprising:
Main body base;
Shell is fixed on the main body base;
Signal amplifies plate, is connected with main body base through second securing member;
Sensor amplifies plate with signal and electrically connects;
Main shaft is installed in the center pit of main body base, and the upper end of said main shaft fixedly installs a moving grating encoder, and the lower end of said main shaft connects a lock sleeve through the 3rd securing member, and said lock sleeve links to each other with rotating spindle;
Head bearing, the top of installing said center pit;
Lower bearing, the bottom of installing said center pit;
Decide grating, be fixed on the pilot hole of said main body base;
The led circuit plate is fixed on the lower end of main body base through first securing member, and said led circuit plate is provided with infrared transmitting tube;
Fixed mount is arranged on the below of main body base, links to each other with main body base through the 4th securing member, and said fixed mount is also fixed through the 5th securing member and motor.
2. photoelectric encoder according to claim 1 is characterized in that, also comprises a steel disc, and said steel disc is fixed on the moving grating encoder, and the top of said steel disc is provided with the clasp that is used for the main shaft fastening.
3. photoelectric encoder according to claim 2 is characterized in that said clasp and main shaft touch the position and be provided with UV glue.
4. photoelectric encoder according to claim 1 is characterized in that, said second securing member is a holding screw, and its number is 3.
5. photoelectric encoder according to claim 1 is characterized in that, the precision of said sensor is 2500 lines/circumference, and its response time is 30ns.
6. photoelectric encoder according to claim 1 is characterized in that, said sensor comprises a sensing chip and a pcb board, and said sensing chip nation fixes on the pcb board.
7. photoelectric encoder according to claim 6 is characterized in that, said sensing chip is a single-chip structure, and its set inside has 12 silicon photodiodes.
8. photoelectric encoder according to claim 6 is characterized in that, the length of said sensing chip is 4.800mm, and wide is 3.800mm, and thickness is 0.305mm.
9. photoelectric encoder according to claim 6 is characterized in that, said pcb board is a double face copper.
10. photoelectric encoder according to claim 6 is characterized in that, the both sides of said pcb board are respectively arranged with row's semicircle and cross golden hole, and said pcb board amplifies the plate electric connection through crossing golden hole and signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202125075U CN202119788U (en) | 2011-06-22 | 2011-06-22 | Photoelectric encoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202125075U CN202119788U (en) | 2011-06-22 | 2011-06-22 | Photoelectric encoder |
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| Publication Number | Publication Date |
|---|---|
| CN202119788U true CN202119788U (en) | 2012-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202125075U Expired - Fee Related CN202119788U (en) | 2011-06-22 | 2011-06-22 | Photoelectric encoder |
Country Status (1)
| Country | Link |
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| CN (1) | CN202119788U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103616040A (en) * | 2013-11-23 | 2014-03-05 | 冶金自动化研究设计院 | Combined type optical-electricity encoder with copper code disc |
| CN104634993A (en) * | 2015-02-10 | 2015-05-20 | 广州广电运通金融电子股份有限公司 | Motor rotating direction and rotating speed detection device and method |
| CN105371869A (en) * | 2015-11-27 | 2016-03-02 | 北京振兴计量测试研究所 | Control system for rotary table calibrating installation |
| CN106595729A (en) * | 2016-12-14 | 2017-04-26 | 济南轲盛自动化科技有限公司 | Display device-equipped encoder |
| CN106643828A (en) * | 2017-01-22 | 2017-05-10 | 上海康比利仪表有限公司 | Fixing device for encoder code disc |
| CN106679702A (en) * | 2016-11-30 | 2017-05-17 | 济南轲盛自动化科技有限公司 | Encoder |
| CN108374989A (en) * | 2016-10-13 | 2018-08-07 | 广州达森灯光股份有限公司 | Stimulated light converts the Adjustable head lamp of planar medium light source |
| CN108374990A (en) * | 2016-10-13 | 2018-08-07 | 广州达森灯光股份有限公司 | Stimulated light converts the Adjustable head lamp of conical surface medium light source |
| CN108374991A (en) * | 2016-10-13 | 2018-08-07 | 广州达森灯光股份有限公司 | Adjustable head lamp based on glass tunable laser source |
| CN109990811A (en) * | 2019-04-12 | 2019-07-09 | 广东工业大学 | Coding disk and rotary encoder |
| CN110608774A (en) * | 2019-10-18 | 2019-12-24 | 尹永祥 | Infrared photoelectric coding flowmeter |
-
2011
- 2011-06-22 CN CN2011202125075U patent/CN202119788U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103616040A (en) * | 2013-11-23 | 2014-03-05 | 冶金自动化研究设计院 | Combined type optical-electricity encoder with copper code disc |
| CN104634993A (en) * | 2015-02-10 | 2015-05-20 | 广州广电运通金融电子股份有限公司 | Motor rotating direction and rotating speed detection device and method |
| CN105371869A (en) * | 2015-11-27 | 2016-03-02 | 北京振兴计量测试研究所 | Control system for rotary table calibrating installation |
| CN108374989A (en) * | 2016-10-13 | 2018-08-07 | 广州达森灯光股份有限公司 | Stimulated light converts the Adjustable head lamp of planar medium light source |
| CN108374990A (en) * | 2016-10-13 | 2018-08-07 | 广州达森灯光股份有限公司 | Stimulated light converts the Adjustable head lamp of conical surface medium light source |
| CN108374991A (en) * | 2016-10-13 | 2018-08-07 | 广州达森灯光股份有限公司 | Adjustable head lamp based on glass tunable laser source |
| CN106679702A (en) * | 2016-11-30 | 2017-05-17 | 济南轲盛自动化科技有限公司 | Encoder |
| CN106595729A (en) * | 2016-12-14 | 2017-04-26 | 济南轲盛自动化科技有限公司 | Display device-equipped encoder |
| CN106643828A (en) * | 2017-01-22 | 2017-05-10 | 上海康比利仪表有限公司 | Fixing device for encoder code disc |
| CN109990811A (en) * | 2019-04-12 | 2019-07-09 | 广东工业大学 | Coding disk and rotary encoder |
| CN110608774A (en) * | 2019-10-18 | 2019-12-24 | 尹永祥 | Infrared photoelectric coding flowmeter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120118 Termination date: 20150622 |
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| EXPY | Termination of patent right or utility model |