CN102507970A - Photoelectric type coder for measuring rotating direction and rotating speed of electric motor - Google Patents
Photoelectric type coder for measuring rotating direction and rotating speed of electric motor Download PDFInfo
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- CN102507970A CN102507970A CN2011103376126A CN201110337612A CN102507970A CN 102507970 A CN102507970 A CN 102507970A CN 2011103376126 A CN2011103376126 A CN 2011103376126A CN 201110337612 A CN201110337612 A CN 201110337612A CN 102507970 A CN102507970 A CN 102507970A
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Abstract
The invention discloses a photoelectric type coder for measuring the rotating direction and the rotating speed of an electric motor. The photoelectric type coder comprises a photoelectric code disc and a photoinduction device which is arranged at a position close to the photoelectric code disc, wherein the photoelectric code disc is provided with multiple first areas and second areas which are distributed at intervals, the logic value of the photoinduction device in the first areas is 1, the logic value of the photoinduction device in the second areas is 0, third areas are formed by adjacentfirst areas and second areas, and the photoelectric code disc is provided with at least two third areas. The photoelectric type coder is characterized in that the first areas are unevenly distributed. By unevenly distributing the areas in which the logic value of the photoinduction device is 1 on a code surface or a periphery surface of the photoelectric code disc according to a certain rule, thus pulse signals in different pulse widths can be generated due to the motion and variation of the photoelectric code disc, the rotating direction of the electric motor can be judged just by one induction device according to the variation rule of the pulse signals, the rotating speed of the electric motor can be calculated through counting the pulse signals by a counter, the power consumption is reduced, the structure is simplified, and the cost is saved.
Description
Technical field
The present invention relates to motor, especially relate to a kind of optical-electricity encoder that is used to measure motor sense of rotation and speed.
Background technology
In the control technology of motor, need to adopt scrambler to measure rotating speed of motor and differentiate sense of rotation usually.At present; The scrambler of in field of engineering technology, using mainly is an optical-electricity encoder; Photoelectric code disk is installed on the driving shaft of motor, drives the photoelectric code disk rotation during driving shaft rotation, the continuous light that optical transmitting set sends is cut into interrupted light by equally distributed printing opacity sector on the photoelectric code disk and light tight sector; Shown in Fig. 1-1, the printing opacity sector 1 ' on the photoelectric code disk is distributed on the card with light tight sector 2 ' equably.Receive the light that sees through photoelectric code disk and export the control circuit of corresponding pulse signal by optical receiver to motor; Pulse signal is shown in Fig. 1-2; The pulsewidth of each pulse signal is identical, is cyclical variation, calculates the speed of rotation thus through the counter pulse count; Sense of rotation then need be provided with two light reflex device and optical receivers usually, judges that through the sequencing of output signal motor is just to change or reverse.
Yet, two light reflex device and optical receivers are set, can make the power consumption of motor increase, increase use cost; And structure is comparatively complicated with the location assembling, is difficult to accomplish miniaturization, influences cost of products.
Summary of the invention
Technical matters to be solved by this invention provides a kind of optical-electricity encoder of measuring motor sense of rotation and speed, only needs can realize measuring through an induction installation, has reduced power consumption, simplifies the structure, and has practiced thrift cost.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of optical-electricity encoder of measuring motor sense of rotation and speed; Comprise the Photoinduction device that photoelectric code disk and contiguous said photoelectric code disk are provided with; Have a plurality of spaced apart said Photoinduction device logical values on the said photoelectric code disk and are 1 first area and logical value and be 0 second area; Adjacent said first area and said second area are formed one the 3rd zone; Have at least two the 3rd zones on the said photoelectric code disk, it is characterized in that, said first area uneven distribution.
According to an aspect of the present invention; One in said first area and the said second area is the catoptrical zone of white; Another is the light absorbing zone of black; Said Photoinduction device is first photoinduction element that comprises a pair of light-emitting tube and light receiving tube, and said first photoinduction element is arranged on a side of said photoelectric code disk.
Also be provided with second photoinduction element that comprises a pair of light-emitting tube and light receiving tube in the said motor; Form the difference discharge circuit with said first photoinduction element, be used to eliminate the interference that the meetings such as heat radiation behind motor vibrations or the electric machine temperature rise cause the detection of photoinduction element.
In one embodiment, said first area and said second area are arranged on the card of said photoelectric code disk, and said first photoinduction element is arranged on the axial side of said photoelectric code disk.
In another embodiment, the week that said first area and said second area are arranged in said photoelectric code disk makes progress, and said first photoinduction element is arranged on a said photoelectric code disk side radially.
According to another aspect of the present invention; One in said first area and the said second area is the zone of printing opacity; Another is lighttight zone; Said Photoinduction device is a pair of optical transmitting set and optical receiver, and said optical transmitting set is arranged on a side of said photoelectric code disk, and said optical receiver is arranged on the opposite side of said photoelectric code disk.
In one embodiment, said first area and said second area are arranged on the card of said photoelectric code disk, and said optical transmitting set and optical receiver are separately positioned on the axial both sides of said photoelectric code disk.
In another embodiment, the week that said first area and said second area are arranged in said photoelectric code disk makes progress, and said optical transmitting set and optical receiver are arranged on said photoelectric code disk both sides radially.
Said the 3rd zone big or small identical makes that the interval of pulsing signal is identical, is cycle variation.
Said first area increases along a direction equivalent, makes the pulsewidth equivalent of pulse signal increase, and is convenient to the judgement of sense of rotation.
Compared with prior art; The invention has the advantages that: with the Photoinduction device logical value be 1 zone be distributed in photoelectric code disk according to certain rules unevenly card or week upwards; Produce the pulse signal that pulsewidth does not wait with this photoelectric code disk motion change; According to the Changing Pattern of pulse signal, only just can judge the sense of rotation of motor with an induction installation, and through the rotational speed of counter pulse signals counting with the calculating motor.
Description of drawings
Fig. 1-1 is the photoelectric code disk synoptic diagram of prior art;
Fig. 1-2 is the output signal schematic representation of Fig. 1-1;
Fig. 2 is the synoptic diagram of an embodiment of optical-electricity encoder of the present invention;
Fig. 3-1 is a photoelectric code disk synoptic diagram of the present invention;
Fig. 3-2 is the output signal schematic representation of Fig. 3-1;
Fig. 4 is the synoptic diagram of another embodiment of optical-electricity encoder of the present invention;
Fig. 5-1 is the synoptic diagram of another embodiment of photoelectric code disk of the present invention;
Fig. 5-2 is the output signal schematic representation of Fig. 5-1;
Fig. 6 is the difference discharge circuit figure that two photoinduction elements of the present invention are formed.
Embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
Shown in Fig. 2 and Fig. 3-1; A kind of optical-electricity encoder of measuring motor sense of rotation and speed; Comprise Photoinduction device and photoelectric code disk 2, Photoinduction device is first photoinduction element 1 of a pair of light-emitting tube and light receiving tube, is arranged on the axial side of photoelectric code disk 2 integratedly; Fix with the housing of motor, do not rotate with the rotation of driving shaft 6.Photoelectric code disk 2 has single code channel, is fixed on the driving shaft 6 of motor, rotates along with the rotation of driving shaft 6.Be distributed with the light absorption sector 31 and white light reflection sector 32 of the equal fan-shaped black of a plurality of quantity on photoelectric code disk 2 cards; Light absorption sector 31 and light reflection sector 32 separation; A sector 3 is formed with light reflection sector 32 in adjacent light absorption sector 31; Have at least two sectors 3 on the photoelectric code disk 2, be used to absorb or reflected light to provide the signal of variation.Each 3 zone, sector can identically also can have nothing in common with each other, and light reflection sector 32 area size are different, are uneven distribution.Preferably, shown in Fig. 3-1, each sector 3 (shown in the figure being 8) zone is identical, and each light reflection sector 32 is equivalent to a direction and changes, and is the equivalent increase along clockwise direction of light reflection sector 32 shown in the figure.
Logical value with Photoinduction device light reflex sector 32 is 1, and light absorption sector 31 logical values are 0 (also can in contrast).Behind electrical power, photoelectric code disk 2 rotates (as rotating counterclockwise), and the light-emitting tube of first photoinduction element 1 sends continuous light.When the reflection of the light in the sector 3 sector 32 went to first photoinduction element, 1 place, the light receiving tube of first photoinduction element 1 received the light of reflected back, the pulse signal of output logic value 1; When the light absorption sector 31 in the sector 3 went to first photoinduction element, 1 place, the light that light-emitting tube sends was absorbed, and light receiving tube does not receive light, and output logic value 0 is shown in Fig. 3-2.Because light reflection sector 32 along equivalent increase clockwise, can see that the pulsewidth equivalent of pulse signal increases, and because each 3 zone, sector is identical, the interval between the pulsing signal equates, is cyclical variation.
Thus, after the control circuit of motor receives pulse signal, can be only increase or the sense of rotation of motor is judged in the variation that reduces with the pulsewidth of the pulse signal of a photoinduction element output.The counter pulse signals counting of control circuit calculates the speed of motor rotation.
Be provided with one second photoinduction element 7 in the motor in addition, also comprise a pair of light-emitting tube and light receiving tube, different with first photoinduction element 1 that is used to detect photoelectric code disk 2 signals; Second photoinduction element 7 does not detect the signal of photoelectric code disk 2; Shown in the arrow among Fig. 2, but detect other undesired signal, as because the meetings such as heat radiation behind motor vibrations or the electric machine temperature rise cause interference to the detection of photoinduction element; Through extra one second photoinduction element 7 is set; Its output signal is sent to the control circuit of motor equally, forms the difference discharge circuit with first photoinduction element 1, and a preferred embodiment can be as shown in Figure 6.An input end of first photoinduction element 1 is connected to high level through first resistance R 1, another input end grounding; An one of which output terminal is connected to the in-phase input end of operational amplifier U1, and is connected to high level through second resistance R 2, another output head grounding.An input end of second photoinduction element 7 is connected to high level through the 3rd resistance R 3, another input end grounding; An one of which output terminal is connected to the inverting input of operational amplifier U1 through input resistance R5, and is connected to high level through the 4th resistance R 4, and another output head grounding is connected with feedback resistance R6 between the inverting input of operational amplifier U1 and the output terminal.The difference of two input ends of operational amplifier U1 as the output signal, then can be eliminated the interference that the meetings such as heat radiation behind motor vibrations or the electric machine temperature rise cause the detection of photoinduction element thus.
Referring to Fig. 4; The difference of itself and embodiment 1 is that Photoinduction device is a pair of optical transmitting set 4 and optical receiver 5, is separately positioned on the axial both sides of photoelectric code disk 2; Optical transmitting set 4 is fixed on the casing of motor with optical receiver 5, does not rotate with the rotation of the driving shaft 6 of motor.Be distributed with fan-shaped light tight sector 31 ' and printing opacity sector 32 ' that a plurality of quantity equate on photoelectric code disk 2 cards, printing opacity sector 32 ' can be tooth, space or other sign.Light tight sector 31 ' and printing opacity sector 32 ' separation, a sector 3 ' is formed with printing opacity sector 32 ' in adjacent light tight sector 31 ', has at least two sectors 3 ' on the photoelectric code disk 2, be used for seeing through or blocking light to provide the signal of variation.Each 3 ' zone, sector can identically also can have nothing in common with each other, and printing opacity sector 32 ' area size is different, is uneven distribution.Preferably, each sector 3 ' (shown in the figure being 8) zone is identical, and each printing opacity sector 32 ' is equivalent to a direction and changes, and is printing opacity sector 32 ' equivalent increase along clockwise direction shown in the figure.
Is 1 with Photoinduction device to printing opacity sector 32 ' logical value, is 0 to light tight sector 31 ' logical value.Behind electrical power, photoelectric code disk 2 rotates (as rotating counterclockwise), and optical transmitting set 4 sends continuous light.When printing opacity sector 32 ' went to optical transmitting set 4 with optical receiver 5 optically-coupled place, light saw through printing opacity sector 32 ', and optical receiver 5 is sensed light signal, the pulse signal of output logic value 1; When light tight sector 31 ' goes to optical transmitting set 4 with optical receiver 5 optically-coupled place; Light is by the 31 ' blocking of light tight sector, and optical receiver 5 is responded to less than light signal, the pulse signal of output logic value 0; The signal of its output is identical with embodiment's 1, shown in Fig. 3-2.Because printing opacity sector 32 ' equivalent increases, can see that the pulsewidth equivalent of pulse signal increases, and because 3 ' zone, sector is identical, the interval between the pulsing signal equates, is cyclical variation.
Thus, after the control circuit of motor receives pulse signal, can be only increase or the sense of rotation of motor is judged in the variation that reduces with the pulsewidth of a pair of optical transmitting set 4 and the pulse signal of optical receiver 5 outputs.The counter pulse signals counting of control circuit calculates the speed of motor rotation.
It should be noted that the Photoinduction device logical value is that 1 or 0 zone is not absolute, can exchange.
The above is merely preferred implementation of the present invention, should be pointed out that for those of ordinary skill in the art, not breaking away under the principle prerequisite of the present invention, can also make various deformation and improvement, and this also should be regarded as protection scope of the present invention.
Claims (10)
1. optical-electricity encoder of measuring motor sense of rotation and speed; Comprise the Photoinduction device that photoelectric code disk (2) and contiguous said photoelectric code disk (2) are provided with; Have a plurality of spaced apart said Photoinduction device logical values on the said photoelectric code disk (2) and are 1 first area and logical value and be 0 second area; Adjacent said first area and said second area are formed one the 3rd zone; Have at least two the 3rd zones on the said photoelectric code disk (2), it is characterized in that, said first area uneven distribution.
2. optical-electricity encoder as claimed in claim 1; It is characterized in that; One in said first area and the said second area is catoptrical zone; Another is light absorbing zone, and said Photoinduction device is first photoinduction element (1) that comprises a pair of light-emitting tube and light receiving tube, and said first photoinduction element (1) is arranged on a side of said photoelectric code disk (2).
3. optical-electricity encoder as claimed in claim 2 is characterized in that, also is provided with second photoinduction element (7) that comprises a pair of light-emitting tube and light receiving tube in the said motor, forms the difference discharge circuit with said first photoinduction element (1).
4. optical-electricity encoder as claimed in claim 2 is characterized in that, said first area and said second area are arranged on the card of said photoelectric code disk (2), and said first photoinduction element (1) is arranged on the axial side of said photoelectric code disk (2).
5. optical-electricity encoder as claimed in claim 2 is characterized in that, the week that said first area and said second area are arranged in said photoelectric code disk (2) makes progress, and said first photoinduction element (1) is arranged on said photoelectric code disk (a 2) side radially.
6. optical-electricity encoder as claimed in claim 1; It is characterized in that; One in said first area and the said second area is the zone of printing opacity, and another is lighttight zone, and said Photoinduction device is a pair of optical transmitting set (4) and optical receiver (5); Said optical transmitting set (4) is arranged on a side of said photoelectric code disk (2), and said optical receiver (5) is arranged on the opposite side of said photoelectric code disk (2).
7. optical-electricity encoder as claimed in claim 6; It is characterized in that; Said first area and said second area are arranged on the card of said photoelectric code disk (2), and said optical transmitting set (4) and optical receiver (5) are separately positioned on the axial both sides of said photoelectric code disk (2).
8. optical-electricity encoder as claimed in claim 6; It is characterized in that; The week that said first area and said second area are arranged in said photoelectric code disk (2) makes progress, and said optical transmitting set (4) and optical receiver (5) are arranged on said photoelectric code disk (2) both sides radially.
9. like each described optical-electricity encoder among the claim 1-8, it is characterized in that, said the 3rd the zone big or small identical.
10. like each described optical-electricity encoder among the claim 1-8, it is characterized in that said first area increases along a direction equivalent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103376126A CN102507970A (en) | 2011-10-31 | 2011-10-31 | Photoelectric type coder for measuring rotating direction and rotating speed of electric motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103376126A CN102507970A (en) | 2011-10-31 | 2011-10-31 | Photoelectric type coder for measuring rotating direction and rotating speed of electric motor |
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| CN102507970A true CN102507970A (en) | 2012-06-20 |
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| CN2011103376126A Pending CN102507970A (en) | 2011-10-31 | 2011-10-31 | Photoelectric type coder for measuring rotating direction and rotating speed of electric motor |
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| CN103169623A (en) * | 2013-04-10 | 2013-06-26 | 苏州泽德医疗器械有限公司 | Feeding pump |
| CN103191486A (en) * | 2013-04-10 | 2013-07-10 | 苏州泽德医疗器械有限公司 | Syringe push pump |
| CN103191484A (en) * | 2013-04-10 | 2013-07-10 | 苏州泽德医疗器械有限公司 | Infusion pump |
| CN103576086A (en) * | 2013-07-17 | 2014-02-12 | 韩小东 | Three methods for detecting operation state of motor in rotation resisting switch |
| CN104569815A (en) * | 2014-12-24 | 2015-04-29 | 格力电器（合肥）有限公司 | Motor detection device |
| CN104597278A (en) * | 2015-02-15 | 2015-05-06 | 昆山德拉特兰传动科技有限公司 | Detection wheel with directionality and method for detecting running speed and running direction of vehicle at same time |
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| CN106022199A (en) * | 2016-05-31 | 2016-10-12 | 王灿锋 | Photomagnetic information coding disc, information reading device thereof, and information reading method |
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| CN107707249A (en) * | 2017-09-28 | 2018-02-16 | 合肥科的星测控科技有限公司 | A kind of pulse counting equipment with forward backward counter function |
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| CN108693373A (en) * | 2018-05-22 | 2018-10-23 | 西京学院 | A kind of PWM code-discs speed probe |
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| CN103191484B (en) * | 2013-04-10 | 2015-10-28 | 苏州泽德医疗器械有限公司 | A kind of infusion pump |
| CN103191486A (en) * | 2013-04-10 | 2013-07-10 | 苏州泽德医疗器械有限公司 | Syringe push pump |
| CN103191484A (en) * | 2013-04-10 | 2013-07-10 | 苏州泽德医疗器械有限公司 | Infusion pump |
| CN103169623A (en) * | 2013-04-10 | 2013-06-26 | 苏州泽德医疗器械有限公司 | Feeding pump |
| CN103576086A (en) * | 2013-07-17 | 2014-02-12 | 韩小东 | Three methods for detecting operation state of motor in rotation resisting switch |
| CN104569815A (en) * | 2014-12-24 | 2015-04-29 | 格力电器（合肥）有限公司 | Motor detection device |
| 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 |
| CN104597278A (en) * | 2015-02-15 | 2015-05-06 | 昆山德拉特兰传动科技有限公司 | Detection wheel with directionality and method for detecting running speed and running direction of vehicle at same time |
| CN104965099A (en) * | 2015-06-30 | 2015-10-07 | 深圳乐行天下科技有限公司 | Velocity measurement method and device |
| CN106022199B (en) * | 2016-05-31 | 2019-02-05 | 王灿锋 | A kind of optomagnetic information coding disk and its information read device and information-reading method |
| CN106022199A (en) * | 2016-05-31 | 2016-10-12 | 王灿锋 | Photomagnetic information coding disc, information reading device thereof, and information reading method |
| CN107525556B (en) * | 2016-06-21 | 2019-10-01 | 济南析讯信息技术有限公司 | Single photosensitive type sensor of water meter |
| CN107525556A (en) * | 2016-06-21 | 2017-12-29 | 济南析讯信息技术有限公司 | Single photosensitive type sensor of water meter |
| CN106199067A (en) * | 2016-07-09 | 2016-12-07 | 杰克缝纫机股份有限公司 | A kind of peg or spindle of measuring rotates and the device and method of rotation direction |
| CN105970505A (en) * | 2016-07-16 | 2016-09-28 | 杰克缝纫机股份有限公司 | Method and device for controlling residual thread length of bobbin of sewing machine |
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| CN109115253A (en) * | 2017-06-22 | 2019-01-01 | 江苏徕兹测控科技有限公司 | A kind of single-code channel rotary encoder |
| CN107707249A (en) * | 2017-09-28 | 2018-02-16 | 合肥科的星测控科技有限公司 | A kind of pulse counting equipment with forward backward counter function |
| CN107941517A (en) * | 2017-12-30 | 2018-04-20 | 长沙迪普美医疗科技有限公司 | Infusion pump drives detection device and method |
| CN108693373A (en) * | 2018-05-22 | 2018-10-23 | 西京学院 | A kind of PWM code-discs speed probe |
| CN109662877A (en) * | 2019-01-08 | 2019-04-23 | 奥佳华智能健康科技集团股份有限公司 | A kind of massager |
| CN113894845A (en) * | 2020-07-06 | 2022-01-07 | 深圳乐动机器人有限公司 | Robot and method and device for measuring scanning rotation speed of robot, and storage medium |
| CN113894845B (en) * | 2020-07-06 | 2024-01-09 | 深圳乐动机器人股份有限公司 | Robot and method and device for measuring side scanning rotating speed thereof and storage medium |
| CN117451084A (en) * | 2023-12-25 | 2024-01-26 | 科沃斯家用机器人有限公司 | Code wheel and optical coding device |
| CN117451084B (en) * | 2023-12-25 | 2024-03-15 | 科沃斯家用机器人有限公司 | Code wheel and optical coding device |
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Application publication date: 20120620 |