CN106169928A - A kind of encoder scaling down processing circuit based on CPLD - Google Patents
A kind of encoder scaling down processing circuit based on CPLD Download PDFInfo
- Publication number
- CN106169928A CN106169928A CN201610795101.1A CN201610795101A CN106169928A CN 106169928 A CN106169928 A CN 106169928A CN 201610795101 A CN201610795101 A CN 201610795101A CN 106169928 A CN106169928 A CN 106169928A
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- Prior art keywords
- signal
- cpld
- circuit
- frequency dividing
- scaling down
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/003—Modifications for increasing the reliability for protection
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K23/00—Pulse counters comprising counting chains; Frequency dividers comprising counting chains
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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- General Physics & Mathematics (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Electronic Switches (AREA)
Abstract
The present invention is applicable to the technical field of signal processing, disclose a kind of encoder scaling down processing circuit based on CPLD, including input circuit part, signal isolated part, CPLD, frequency dividing selection circuit and output circuit part, described input circuit part is connected with signal isolated part, described signal isolated part is connected with CPLD, described CPLD is connected with frequency dividing selection circuit, described frequency dividing selection circuit is connected with output circuit part, and described input circuit part carries out electrical signal collection to signal input port.The present invention uses pull-up resistor to ensure that the reliability of signal by input circuit part, uses filter capacitor to reduce the interference to useful signal；Signal isolated part uses and makes, for realizing the isolation of signal in circuit, to be effectively prevented in circuit the interference to next stage circuit of some signal to optocoupler；The pin of CPLD prevents it from circuit is produced interference by effective grounding, realizes frequency dividing by toggle switch, improves the versatility of product.
Description
[technical field]
The present invention relates to the technical field of signal processing, particularly to a kind of encoder scaling down processing based on CPLD electricity
Road.
[background technology]
Along with the development of electronic technology, programmable logic device (CPLD) is widely used in various special IC, with
Traditional digital circuit design method compares features such as having lead time short, low cost, flexible design, thus obtains increasingly
It is widely applied.At present, owing to the resolution of encoder own cannot meet use requirement, the resolution causing signal is relatively low,
And using the purpose of scaling down processing is to improve the resolution of encoder output, but use frequency dividing circuit can bring signal essence
Degree declines to obtain disadvantage.In order to improve the signal accuracy after programmable logic device (CPLD) scaling down processing, meet high accuracy letter
Number use requirement, it is necessary to a kind of encoder scaling down processing circuit based on CPLD is proposed.
[summary of the invention]
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, it is provided that at a kind of encoder frequency dividing based on CPLD
Reason circuit, it aims to solve the problem that in prior art that the signal accuracy after programmable logic device (CPLD) scaling down processing is the highest, it is impossible to full
Foot uses the technical problem of demand.
For achieving the above object, the present invention proposes a kind of encoder scaling down processing circuit based on CPLD, including input
Circuit part, signal isolated part, CPLD, frequency dividing selection circuit and output circuit part, described input circuit part and letter
Number isolated part connects, and described signal isolated part is connected with CPLD, and described CPLD is connected with dividing selection circuit, described
Frequency dividing selection circuit be connected with output circuit part, described input circuit part carries out the signal of telecommunication to signal input port and adopts
Collection.
As preferably, described input circuit part is provided with pull-up resistor and filter capacitor, described pull-up resistor pair
The signal collected pulls up, and the unwanted signal of telecommunication is filtered by described filter capacitor.
As preferably, described signal isolated part uses the signal isolation that optocoupler realizes input circuit part, by right
The signal of telecommunication that input circuit part is collected by optocoupler changes into optical signal, then optical signal changes into signal of telecommunication transmission extremely
CPLD。
As preferably, described CPLD carries out logical operations to the signal of telecommunication after signal isolated part effect, and by logic
Signal after computing exports to frequency dividing selection circuit.
As preferably, the signal after CPLD is collected computing by described frequency dividing selection circuit carries out scaling down processing, and by defeated
Go out circuit part to be exported by the signal after scaling down processing.
As preferably, described frequency dividing selection circuit realizes scaling down processing by toggle switch.
As preferably, the equal effective grounding of vacant pin of described CPLD.
Beneficial effects of the present invention: compared with prior art, a kind of based on CPLD encoder frequency dividing that the present invention provides
Process circuit, use programmable logic device (CPLD) and input circuit part, signal isolated part, frequency dividing selection circuit and output
Circuit part realizes the collection to signal, isolates, calculates, divides and export, by the pull-up resistor of input circuit part to institute
The signal gathered pulls up, it is ensured that the reliability of signal, and filter capacitor can be by unwanted letter present in circuit
Number filter, thus reduce the interference to useful signal；Signal isolated part uses and makes optocoupler for realizing circuit
The isolation of middle signal, is effectively prevented in circuit the interference to next stage circuit of some signal；The pin of CPLD is by effectively
Ground connection prevents it from circuit is produced interference, improves accuracy and the precision of signal, realizes frequency dividing by toggle switch, it is ensured that
User can select accordingly according to the practical situation of himself equipment, thus improves the versatility of product.
Inventive feature and advantage will combine accompanying drawing by embodiment and be described in detail.
[accompanying drawing explanation]
Fig. 1 is the theory diagram of a kind of encoder scaling down processing circuit based on CPLD of the embodiment of the present invention；
Fig. 2 is the input circuit part of A+, A-signal of the embodiment of the present invention.
In figure: 1-input circuit part, 2-signal isolated part, 3-CPLD, 4-divide selection circuit, 5-output circuit portion
Point.
[detailed description of the invention]
For making the object, technical solutions and advantages of the present invention of greater clarity, below by accompanying drawing and embodiment, right
The present invention is further elaborated.However, it should be understood that specific embodiment described herein is only in order to explain this
Bright, it is not limited to the scope of the present invention.Additionally, in the following description, eliminate the description to known features and technology, with
Avoid unnecessarily obscuring idea of the invention.
Refering to Fig. 1, the embodiment of the present invention provides a kind of encoder scaling down processing circuit based on CPLD, including input circuit
Part 1, signal isolated part 2, CPLD3, frequency dividing selection circuit 4 and output circuit part 5, described input circuit part 1 with
Signal isolated part 2 connects, and described signal isolated part 2 is connected with CPLD3, and described CPLD3 is with frequency dividing selection circuit 4 even
Connecing, described frequency dividing selection circuit 4 is connected with output circuit part 5, and signal input port is entered by described input circuit part 1
Horizontal electrical signal gathers.
Wherein, described input circuit part 1 is provided with pull-up resistor and filter capacitor, and described pull-up resistor is to collection
To signal pull up, the unwanted signal of telecommunication is filtered by described filter capacitor.
Refering to Fig. 2, input circuit part 1 realizes adopting signal by A+, A-, B+, B-, Z+, Z-signal input port
Collection, is the input circuit part 1 to A+, A-signal in Fig. 2, is come letter by resistance after A+, A-signal input collected
Number pull up, it is ensured that the reliability of signal；It is filtered by filter capacitor for circuit exists unwanted signal,
Thus reduce the interference to useful signal；Some signals pair that circuit itself is existing are fully taken into account in the design of circuit
The situation that next stage circuit can have a negative impact, and then by optocoupler being made for realizing the isolation of signal in circuit, this
One design is effectively prevented in circuit the interference to next stage circuit of some signal.
Further, described signal isolated part 2 uses the signal isolation that optocoupler realizes input circuit part 1, by
The signal of telecommunication that input circuit part 1 collects is changed into by optocoupler optical signal, then optical signal is changed into the signal of telecommunication transmits extremely
The signal of telecommunication after signal isolated part 2 is acted on by CPLD3, described CPLD3 carries out logical operations, and by the letter after logical operations
Number output give frequency dividing selection circuit 4.
Further, the signal after CPLD3 is collected computing by described frequency dividing selection circuit 4 carries out scaling down processing, and passes through
Signal after scaling down processing is exported by output circuit part 5, and described frequency dividing selection circuit 4 realizes frequency dividing by toggle switch
Process.
Further, the equal effective grounding of vacant pin of described CPLD3.
A kind of encoder scaling down processing circuit based on CPLD of the present invention, uses programmable logic device (CPLD) and input electricity
Road part 1, signal isolated part 2, frequency dividing selection circuit 4 and output circuit part 5 realize the collection to signal, isolate, calculate,
Frequency dividing and output, pulled up the signal gathered by the pull-up resistor of input circuit part 1, it is ensured that signal reliable
Property, and unwanted signal present in circuit can be filtered by filter capacitor, thus reduce and useful signal is done
Disturb；Signal isolated part 2 uses and makes optocoupler, for realizing the isolation of signal in circuit, to be effectively prevented in circuit some
The signal interference to next stage circuit；The pin of CPLD prevents it from circuit is produced interference by effective grounding, improves signal
Accuracy and precision, by toggle switch realize frequency dividing, it is ensured that user can be carried out according to the practical situation of himself equipment
Corresponding selection, thus improve the versatility of product.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any amendment, equivalent or the improvement etc. made within god and principle, should be included within the scope of the present invention.
Claims (7)
1. an encoder scaling down processing circuit based on CPLD, it is characterised in that: include input circuit part (1), signal every
From part (2), CPLD (3), frequency dividing selection circuit (4) and output circuit part (5), described input circuit part (1) and letter
Number isolated part (2) connects, and described signal isolated part (2) is connected with CPLD (3), described CPLD (3) with divide selection
Circuit (4) connects, and described frequency dividing selection circuit (4) is connected with output circuit part (5), described input circuit part (1)
Signal input port is carried out electrical signal collection.
A kind of encoder scaling down processing circuit based on CPLD, it is characterised in that: described input
Circuit part (1) is provided with pull-up resistor and filter capacitor, and the signal collected is pulled up by described pull-up resistor, described
Filter capacitor the unwanted signal of telecommunication is filtered.
A kind of encoder scaling down processing circuit based on CPLD, it is characterised in that: described signal
Isolated part (2) uses the signal isolation that optocoupler realizes input circuit part (1), by optocoupler by input circuit part (1)
The signal of telecommunication collected changes into optical signal, then optical signal changes into signal of telecommunication transmission to CPLD (3).
A kind of encoder scaling down processing circuit based on CPLD, it is characterised in that: described CPLD
(3) signal of telecommunication after acting on signal isolated part (2) carries out logical operations, and exports the signal after logical operations to frequency dividing
Selection circuit (4).
A kind of encoder scaling down processing circuit based on CPLD, it is characterised in that: described frequency dividing
Selection circuit (4) carries out scaling down processing to the signal after CPLD (3) volume of computing, and by output circuit part (5) by frequency dividing
Signal output after reason.
A kind of encoder scaling down processing circuit based on CPLD, it is characterised in that: described frequency dividing
Selection circuit (4) realizes scaling down processing by toggle switch.
7. a kind of based on CPLD the encoder scaling down processing circuit as described in any one in claim 3 to 5, its feature exists
In: the equal effective grounding of vacant pin of described CPLD (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610795101.1A CN106169928A (en) | 2016-08-31 | 2016-08-31 | A kind of encoder scaling down processing circuit based on CPLD |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610795101.1A CN106169928A (en) | 2016-08-31 | 2016-08-31 | A kind of encoder scaling down processing circuit based on CPLD |
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| CN106169928A true CN106169928A (en) | 2016-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610795101.1A Pending CN106169928A (en) | 2016-08-31 | 2016-08-31 | A kind of encoder scaling down processing circuit based on CPLD |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201655521U (en) * | 2010-03-01 | 2010-11-24 | 盛能动力科技(深圳)有限公司 | Decoding device and system for universal rotating transformer |
| CN202282768U (en) * | 2011-10-28 | 2012-06-20 | 深圳市星龙科技有限公司 | Circuit capable of detecting multiple electrical energy impulse signals |
| CN202649763U (en) * | 2012-04-24 | 2013-01-02 | 广西大学 | Decoding device for synchronous serial transmission absolute type encoder |
| US8362801B1 (en) * | 2011-10-24 | 2013-01-29 | Eastman Kodak Company | Method of programming a safety component |
| CN103162725A (en) * | 2013-02-28 | 2013-06-19 | 重庆大学 | Photoelectric encoder rotating pulse display device |
| CN203661029U (en) * | 2013-12-31 | 2014-06-18 | 中国船舶重工集团公司第七一三研究所 | Countable digital input module |
| CN205484178U (en) * | 2016-01-04 | 2016-08-17 | 中国人民解放军后勤工程学院 | A oxygen concentration detection system that is used for guard station system oxygen system of tibet frontier guards |
| CN206077357U (en) * | 2016-08-31 | 2017-04-05 | 浙江佳乐科仪股份有限公司 | A kind of encoder scaling down processing circuit based on CPLD |
-
2016
- 2016-08-31 CN CN201610795101.1A patent/CN106169928A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201655521U (en) * | 2010-03-01 | 2010-11-24 | 盛能动力科技(深圳)有限公司 | Decoding device and system for universal rotating transformer |
| US8362801B1 (en) * | 2011-10-24 | 2013-01-29 | Eastman Kodak Company | Method of programming a safety component |
| CN202282768U (en) * | 2011-10-28 | 2012-06-20 | 深圳市星龙科技有限公司 | Circuit capable of detecting multiple electrical energy impulse signals |
| CN202649763U (en) * | 2012-04-24 | 2013-01-02 | 广西大学 | Decoding device for synchronous serial transmission absolute type encoder |
| CN103162725A (en) * | 2013-02-28 | 2013-06-19 | 重庆大学 | Photoelectric encoder rotating pulse display device |
| CN203661029U (en) * | 2013-12-31 | 2014-06-18 | 中国船舶重工集团公司第七一三研究所 | Countable digital input module |
| CN205484178U (en) * | 2016-01-04 | 2016-08-17 | 中国人民解放军后勤工程学院 | A oxygen concentration detection system that is used for guard station system oxygen system of tibet frontier guards |
| CN206077357U (en) * | 2016-08-31 | 2017-04-05 | 浙江佳乐科仪股份有限公司 | A kind of encoder scaling down processing circuit based on CPLD |
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