CN203464945U - Single-loop absolute value coding disc - Google Patents
Single-loop absolute value coding disc Download PDFInfo
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- CN203464945U CN203464945U CN201320583748.XU CN201320583748U CN203464945U CN 203464945 U CN203464945 U CN 203464945U CN 201320583748 U CN201320583748 U CN 201320583748U CN 203464945 U CN203464945 U CN 203464945U
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Abstract
Disclosed in the utility model is a single-loop absolute value coding disc. An outer-loop code channel, an inner-loop code channel, and a plurality of code channels arranged between the inner loop and the outer loop, wherein the circle centers of the outer-loop code channel and the inner-loop code channel are not concentric with the rotation center of the coding disc. When the coding disc rotates, the light-transmitting portions of the code channels and a light-sensitive portion of a photosensitive sensor are superposed and the width changes based on a sine curve. According to the utility model, on the basis of utilization of the non-concentric outer-loop code channel and inner-loop code channel, instead of using grid lines with alternate brightness and darkness of the single-loop code channel for positioning, the illumination area of the photosensitive sensor is determined by relying on the rotation positions of the outer-loop code channel and the inner-loop code channel and then the positioning is realized according to the light-sensing areas, corresponding to the outer-loop code channel and the inner-loop code channel, of the photosensitive sensor. Moreover, the processing is simple; the cost is low; the precision in use is high; and the resolution ratio is high.
Description
Technical field
The utility model relates to code-wheel field, particularly relates to a kind of individual pen absolute encoder dish, for mass transport industry, driving motor, machinery and plant engineering, engineering automatic field.
Background technology
Code-disc is to be made by optical glass, metal or plastics, is carved with many concentric code channels in the above, has printing opacity and the lightproof part arranged according to certain rules on each code channel.During work, light is incident upon on code-disc, code-disc rotates with moving object, and the light that sees through clear zone is accepted by light activated element after slit, and the arrangement of light activated element is corresponding one by one with code channel, the signal of exporting for the light activated element of clear zone and dark space, the former is " 1 ", and the latter is " 0 ", when code-disc is rotated in diverse location, the combination of light activated element output signal reflects the digital quantity of certain rule, has represented the angular displacement of code disk shaft.Existing individual pen absolute value encoder is that the coding that represents angle is engraved on code-disc, and the resolution that processing technology has limited scrambler improves, and can not meet control system and rotational angle be carried out to the demand of high precision detection.The light and dark grid line that requires of existing individual pen absolute encoder dish is engraved on a code channel, so process technology requirement is high.Existing individual pen absolute encoder dish requires code-disc angular coding to be engraved on code-disc, when code-disc resolution requirement is higher, must need to increase the group/cording quantity of code-disc, resolution is higher, in code-disc coding, " 0 " and " 1 " shared relative area is just less, higher to processing technology requirement, cost is also just higher; The processing technology of existing code-wheel can not meet the demand that control system is more and more higher to angle angular resolution.
Utility model content
Order of the present utility model is to solve prior art problem, provides that a kind of processing is simple, cheap, high precision, high-resolution code-wheel.
The technical scheme in the invention for solving the above technical problem is: a kind of individual pen absolute encoder dish, on described code-disc face, comprise outer ring code channel, inner ring code channel and some other code channels between inner ring and outer ring, described outer ring code channel and inner ring code channel decentraction, and outer ring code channel and the rotation center of inner ring code channel and the rotation center of code-disc do not overlap.
In technique scheme, described outer ring code channel is comprised of two different concentric circles curves of radius.
In technique scheme, described inner ring code channel is comprised of two different concentric circles curves of radius.
In technique scheme, the long-pending overlapping area of the light transmission part of described inner ring code channel and outer ring code channel and light sensor sensitization part face is according to sinusoidal variation.
In technique scheme, the output of the sinusoidal curve phase place of described inner ring code channel and outer ring code channel differs 90 degree.
Principle of work of the present utility model is, whole device has also needed light sensor and signal processing circuit board, light sensor is fixed on signal processing circuit board, light sensor links together by the signal processing unit on circuit design and signal-processing board, and individual pen absolute encoder dish is arranged on the top of light sensor.
On light sensor, comprise a plurality of photosensitive areas, two curves of two curves of the outer ring code channel on code-wheel and inner ring code channel are corresponding different photosensitive areas respectively, when the corresponding light sensor rotation of individual pen absolute encoder dish, due to the outmost turns code channel center of circle and innermost circle code channel center of circle decentraction, and the outmost turns code channel center of circle, the innermost circle code channel center of circle all with code-disc rotation center decentraction, after the photosensitive area sensitization of light sensor, doing the signal of exporting after difference processing is sinusoidal signal, and the signal phase of two groups of outputs differs 90 degree.
At work, signal-processing board is processed the signal of accepting from light sensor, if light sensor only has outer ring code channel sensitization, or only has the sensitization of inner ring code channel, and the signal after light sensor is processed can not be determined the anglec of rotation of code-disc.While only having signal-processing board to process the sinusoidal signal of photosensitive area of inner ring, outer ring code channel simultaneously, the anglec of rotation of individual pen absolute encoder dish is corresponding one by one with the signal of signal processing circuit board identification, and at this moment individual pen absolute encoder dish just can record each angle of turning axle.
In sum, owing to having adopted technique scheme, the beneficial effects of the utility model are: the utility model adopts the code channel of inside and outside two circle decentraction, not to rely on the light and dark grid line of individual pen code channel to locate, adopt two code channels to realize light sensor phase of output signal and differ 90 °, by the signal of light sensor output is processed just can unique definite code-disc position.The utlity model has realize with low cost, precision is high, processing technology requires the features such as low, the positioning precision of code-wheel no longer depend on " bright " on code-disc, " secretly " alternate code element number, and depend on processing of circuit precision partly.
Accompanying drawing explanation
The utility model will illustrate by embodiment and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the enlarged diagram in a segment encode road in the present invention;
Fig. 3 is the structural representation of light sensor;
Fig. 4 is schematic diagram of the invention process;
Wherein: the 1st, code-wheel, the 2nd, light sensor, the 3rd, signal processing circuit board, the 1.1st, outer ring code channel, the 1.2nd, some code channels, the 1.3rd, inner ring code channel, the 2.1,2.2,2.3, the 2.4th, photosensitive area.
Embodiment
Below in conjunction with accompanying drawing and by embodiment, the utility model is described in further detail, and following examples are to explanation of the present utility model and the utility model is not limited to following examples.
As shown in Fig. 1, on code-wheel 1 of the present invention, be provided with outer ring code channel 1.1 and inner ring code channel 1.3, and the some code channels 1.2 between two; Outer ring code channel 1.1 is comprised of two different concentric circles curves of radius, and inner ring code channel 1.3 is also comprised of two different concentric circles curves of radius; But outer ring code channel 1.1, inner ring code channel 1.3 all do not overlap with the rotation center of code-wheel 1.
As shown in Figure 3, be the structural representation of light sensor 2, on light sensor 2, be provided with a plurality of photosensitive areas 2.1,2.2,2.3,2.4; Be illustrated in figure 2 the structure for amplifying schematic diagram in the segment encode road in Fig. 1, the 2.1, photosensitive area, photosensitive area 2.2 on the corresponding light sensor 2 of outer ring code channel 1.1 on code-wheel 1, the 2.3, photosensitive area, photosensitive area 2.4 on the corresponding light sensor of inner ring code channel 1.3.
As shown in Figure 4, light sensor 2 is arranged on signal processing circuit board 3, and code-wheel 1 is between light source and light sensor 2, when light source luminescent is radiated on code-wheel 1, when code-wheel 1 rotates with respect to light sensor 2, due to the center of circle of outer ring code channel 1.1 and the center of circle decentraction of inner ring code channel 1.3, and the center of circle of outer ring code channel 1.1, the center of circle of inner ring code channel 1.3 all with code-wheel 1 rotation center decentraction, it is sinusoidal signal that the signal of exporting after difference processing is done in 2.1Yu photosensitive area, photosensitive area 2.2, the signal of exporting after difference processing is done in 2.3Yu photosensitive area, photosensitive area 2.4 also becomes string signal, and phase phasic difference 90 degree of two output signals.When being read by sinusoidal signal after the sinusoidal signal after 2.2 difference processing of 2.1, photosensitive area, photosensitive area or 2.3, photosensitive area, photosensitive area 2.4 difference processing by 3 of signal processing circuit boards, can not make the anglec of rotation of individual pen absolute encoder dish 1 corresponding one by one with the signal of signal processing circuit board 3 identifications.But during sinusoidal signal after the sinusoidal signal after signal processing circuit board 3 reads 2.1, photosensitive area, photosensitive area 2.2 difference processing simultaneously and 2.3, photosensitive area, photosensitive area 2.4 difference processing, signal processing circuit board 3 is by read two paths of signals simultaneously, just can make the anglec of rotation of individual pen absolute encoder dish 1 corresponding one by one with the signal of signal processing circuit board 3 identifications, at this moment individual pen absolute encoder dish 1 just can record each angle of turning axle.
Disclosed all features in this instructions, except mutually exclusive feature, all can combine by any way.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (5)
1. an individual pen absolute encoder dish, is characterized by and on described code-disc face, comprise outer ring code channel, inner ring code channel and other code channels between inner ring and outer ring, and outer ring code channel and the rotation center of inner ring code channel and the rotation center of code-disc do not overlap.
2. a kind of individual pen absolute encoder dish according to claim 1, is characterized by described outer ring code channel and is comprised of two different concentric circles curves of radius.
3. a kind of individual pen absolute encoder dish according to claim 1, is characterized by described inner ring code channel and is comprised of two different concentric circles curves of radius.
4. according to a kind of individual pen absolute encoder dish described in claim 2 or 3, it is characterized by the light transmission part of described inner ring code channel and outer ring code channel and the overlapping area of light sensor sensitization part according to sinusoidal variation.
5. a kind of individual pen absolute encoder dish according to claim 4, the sinusoidal curve phase place output that it is characterized by described inner ring code channel and outer ring code channel differs 90 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320583748.XU CN203464945U (en) | 2013-09-22 | 2013-09-22 | Single-loop absolute value coding disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320583748.XU CN203464945U (en) | 2013-09-22 | 2013-09-22 | Single-loop absolute value coding disc |
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| Publication Number | Publication Date |
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| CN203464945U true CN203464945U (en) | 2014-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320583748.XU Expired - Lifetime CN203464945U (en) | 2013-09-22 | 2013-09-22 | Single-loop absolute value coding disc |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471629A (en) * | 2013-09-22 | 2013-12-25 | 绵阳福德机器人有限责任公司 | Single-ring absolute value coding disc |
| CN108444506A (en) * | 2018-05-31 | 2018-08-24 | 苏州汇川技术有限公司 | Encoder code disc, absolute value encoder, location acquiring method and system |
| CN108716927A (en) * | 2018-06-29 | 2018-10-30 | 广东工业大学 | A kind of image-type photoelectric encoder and its grating encoder |
| CN109827599A (en) * | 2019-02-22 | 2019-05-31 | 珠海格力电器股份有限公司 | Fixed grating for photoelectric encoder and photoelectric encoder |
-
2013
- 2013-09-22 CN CN201320583748.XU patent/CN203464945U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471629A (en) * | 2013-09-22 | 2013-12-25 | 绵阳福德机器人有限责任公司 | Single-ring absolute value coding disc |
| CN108444506A (en) * | 2018-05-31 | 2018-08-24 | 苏州汇川技术有限公司 | Encoder code disc, absolute value encoder, location acquiring method and system |
| CN108444506B (en) * | 2018-05-31 | 2024-03-22 | 苏州汇川技术有限公司 | Encoder code wheel, absolute value encoder, position acquisition method and system |
| CN108716927A (en) * | 2018-06-29 | 2018-10-30 | 广东工业大学 | A kind of image-type photoelectric encoder and its grating encoder |
| CN108716927B (en) * | 2018-06-29 | 2020-11-13 | 广东工业大学 | An image type photoelectric encoder and its grating code disc |
| CN109827599A (en) * | 2019-02-22 | 2019-05-31 | 珠海格力电器股份有限公司 | Fixed grating for photoelectric encoder and photoelectric encoder |
| CN109827599B (en) * | 2019-02-22 | 2024-04-05 | 珠海格力电器股份有限公司 | Fixed grating for photoelectric encoder and photoelectric encoder |
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| GR01 | Patent grant | ||
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Address after: 621000 Mianyang province Sichuan City Feiyun Road in the middle of 386 Patentee after: SICHUAN FUDE ROBOT Co.,Ltd. Address before: 621000, Sichuan, Mianyang hi tech Zone, industrial town, South Road, No., building No. 2, building 2 Patentee before: MIANYANG FUDE ROBOT Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
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Granted publication date: 20140305 |