CN203396406U - Encoder subdivision apparatus - Google Patents
Encoder subdivision apparatus Download PDFInfo
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- CN203396406U CN203396406U CN201320508256.4U CN201320508256U CN203396406U CN 203396406 U CN203396406 U CN 203396406U CN 201320508256 U CN201320508256 U CN 201320508256U CN 203396406 U CN203396406 U CN 203396406U
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- optical coupler
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Abstract
The utility model discloses an encoder subdivision apparatus, comprising an encoder, a difference signal receiver, a digital signal processor, a quadrature encoder, a comparator A, a comparator B, a digital output optical coupler A, a digital output optical coupler B and a digital filter. The sine end of the encoder is respectively in connection with the high level input pin of the comparator A and the digital output optical coupler A through the difference signal receiver; the cosine end of the encoder is respectively in connection with the high level input pin of the comparator B and the digital output optical coupler B through the difference signal receiver; the comparator A and the comparator B are in connection with the digital signal processor through the quadrature encoder; the digital output optical coupler A and the digital output optical coupler B are in connection with the digital signal processor through the digital filter. The encoder subdivision apparatus has good electrical isolation performance and strong common-mode restraining capability, can eliminate interference of common-mode noise, raise an SNR(Signal to Noise Ratio) in information transmission process and reduce cost, and is suitable for circuits with different voltage classes.
Description
Technical field
The utility model relates to scrambler, relates in particular to the subdividing device of scrambler.
Background technology
Magneto-electric sine and cosine encoder code-disc is mainly comprised of magnetic hall device and permanent magnet, scrambler line number is determined by sensing device, but can obtain higher resolution by the algorithm of subdivision of hardware or software, the subdividing device of current encoder device is all to adopt traditional AD sample circuit to segment, adopting chip internal AD to take interrupts the processing time, its electric insulating effect is poor, and common mold noise interference is comparatively serious.
Summary of the invention
The utility model takies the defect such as interrupt the processing time, electric insulating effect is poor, common mold noise interference is comparatively serious for the chip internal AD existing in prior art, a kind of subdividing device of new scrambler is provided.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:
The subdividing device of scrambler, comprise scrambler, differential signal receiver A, differential signal receiver B, digital signal processor, orthogonal encoder, also comprise comparer A, comparer B, numeral output optocoupler A, numeral output optocoupler B, digital filter A, digital filter B, the sinusoidal signal output terminal of described scrambler by differential signal receiver A respectively with the high level input pin of comparer A, the input end of numeral output optocoupler A connects, the cosine signal output terminal of described scrambler by differential signal receiver B respectively with the high level input pin of comparer B, the input end of numeral output optocoupler B connects, described comparer A is connected with central point voltage respectively with the low level input pin of comparer B, described comparer A is connected with digital signal processor by orthogonal encoder respectively with comparer B, described numeral output optocoupler A, numeral output optocoupler B is respectively by digital filter A, digital filter B is connected with digital signal processor.
Adopt numeral output optocoupler can make between two parts circuit of numeral output light-coupled isolation, be there is no the direct connection of electricity, realize good electrical isolation, be applicable to the connection of different electric pressure circuit between high pressure and low pressure, there is the very strong common mode ability of drawing up, can eliminate the interference of common-mode noise, improve the signal to noise ratio (S/N ratio) in message transmitting procedure, and adopt numeral output optocoupler to carry out signal conversion, can save AD sampling A/D chip, transfer process no longer needs the maintenance of AD conversion chip, sampling, translation function, can directly by numeral, export optocoupler output digital data, more cost-saving.During work, scrambler produces sine and cosine signal passes through respectively after differential signal receiver A, differential signal receiver B, the first via is sinusoidal and cosine signal enters respectively comparer A, comparer B and central point voltage compares, and obtain respectively the increment type pulse signal of two kinds of level of height, then after counting processing via orthogonal encoder, be input in digital signal processor, make digital signal processor obtain rough positional value and sense of rotation; The second road is sinusoidal and cosine signal enters respectively numeral output optocoupler A, numeral is exported optocoupler B and carried out amplifier conditioning and obtain the sampled value of 12 after the isolation of numeral output light, and after digital filter A, digital filter B, be sent in digital signal processor respectively, finally by house software algorithm, processed, obtain the more high-resolution positional information of scrambler.
Accompanying drawing explanation
Fig. 1 is the structural principle schematic diagram of the subdividing device of the utility model scrambler.
Embodiment
Below in conjunction with accompanying drawing 1 and embodiment, the utility model is described in further detail, but they are not to restriction of the present utility model:
embodiment 1
As shown in Figure 1, the subdividing device of scrambler, comprises scrambler 1, differential signal receiver A3, differential signal receiver B2, digital signal processor 7, orthogonal encoder 6, also comprises comparer A5, comparer B4, numeral output optocoupler A11, numeral output optocoupler B10, digital filter A9, digital filter B8, the sinusoidal signal output terminal of described scrambler 1 by differential signal receiver A3 respectively with the high level input pin of comparer A5, the input end of numeral output optocoupler A11 connects, the cosine signal output terminal of described scrambler 1 by differential signal receiver B2 respectively with the high level input pin of comparer B4, the input end of numeral output optocoupler B10 connects, described comparer A5 is connected with central point voltage 12 respectively with the low level input pin of comparer B4, described comparer A5 is connected with digital signal processor 7 by orthogonal encoder 6 respectively with comparer B4, described numeral output optocoupler A11, numeral output optocoupler B10 is respectively by digital filter A9, digital filter B8 is connected with digital signal processor 7.
During work, the sine that scrambler 1 produces and cosine signal are respectively by after differential signal receiver A3, differential signal receiver B2, the first via is sinusoidal and cosine signal enters respectively comparer A5, comparer B4 and central point voltage 12 compares, and obtain respectively the increment type pulse signal of two kinds of level of height, then after counting processing via orthogonal encoder 6, be input in digital signal processor 7, make digital signal processor 7 obtain rough positional value and sense of rotation; The second road is sinusoidal and cosine signal enters respectively numeral output optocoupler A11, numeral is exported optocoupler B10 and carried out amplifier conditioning and obtain the sampled value of 12 after the isolation of numeral output light, and after digital filter A9, digital filter B8, be sent in digital signal processor 7 respectively, finally by house software algorithm, processed, obtain the more high-resolution positional information of scrambler 1.
In a word, the foregoing is only preferred embodiment of the present utility model, the equalization that all scopes of applying for a patent according to the utility model are done changes and modifies, and all should belong to covering scope of the present utility model.
Claims (1)
1. the subdividing device of scrambler, comprises scrambler (1), differential signal receiver A (3), differential signal receiver B (2), digital signal processor (7), orthogonal encoder (6), is characterized in that: also comprise comparer A (5), comparer B (4), numeral output optocoupler A (11), numeral output optocoupler B (10), digital filter A (9), digital filter B (8), the sinusoidal signal output terminal of described scrambler (1) by differential signal receiver A (3) respectively with the high level input pin of comparer A (5), the input end of numeral output optocoupler A (11) connects, the cosine signal output terminal of described scrambler (1) by differential signal receiver B (2) respectively with the high level input pin of comparer B (4), the input end of numeral output optocoupler B (10) connects, described comparer A (5) is connected with central point voltage (12) respectively with the low level input pin of comparer B (4), described comparer A (5) is connected with digital signal processor (7) by orthogonal encoder (6) respectively with comparer B (4), described numeral output optocoupler A (11), numeral output optocoupler B (10) is respectively by digital filter A (9), digital filter B (8) is connected with digital signal processor (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320508256.4U CN203396406U (en) | 2013-08-20 | 2013-08-20 | Encoder subdivision apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320508256.4U CN203396406U (en) | 2013-08-20 | 2013-08-20 | Encoder subdivision apparatus |
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| CN203396406U true CN203396406U (en) | 2014-01-15 |
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| CN201320508256.4U Expired - Lifetime CN203396406U (en) | 2013-08-20 | 2013-08-20 | Encoder subdivision apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108426588A (en) * | 2017-02-14 | 2018-08-21 | 日本电产三协株式会社 | Rotary encoder and its absolute angular position detection method |
| CN108871181A (en) * | 2018-05-07 | 2018-11-23 | 哈尔滨理工大学 | A kind of multipair pole magnetoelectric encoder dynamic multiwindow interval prediction angle sorting method |
| CN113008276A (en) * | 2021-02-20 | 2021-06-22 | 浙江禾川科技股份有限公司 | Battery type magnetic encoder |
-
2013
- 2013-08-20 CN CN201320508256.4U patent/CN203396406U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108426588A (en) * | 2017-02-14 | 2018-08-21 | 日本电产三协株式会社 | Rotary encoder and its absolute angular position detection method |
| CN108426588B (en) * | 2017-02-14 | 2020-07-14 | 日本电产三协株式会社 | Rotary encoder and absolute angle position detection method thereof |
| CN108871181A (en) * | 2018-05-07 | 2018-11-23 | 哈尔滨理工大学 | A kind of multipair pole magnetoelectric encoder dynamic multiwindow interval prediction angle sorting method |
| CN113008276A (en) * | 2021-02-20 | 2021-06-22 | 浙江禾川科技股份有限公司 | Battery type magnetic encoder |
| CN113008276B (en) * | 2021-02-20 | 2022-11-25 | 浙江禾川科技股份有限公司 | Battery type magnetic encoder |
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Granted publication date: 20140115 |
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| CX01 | Expiry of patent term |