CN205228480U - Encoder decoding circuit - Google Patents
Encoder decoding circuit Download PDFInfo
- Publication number
- CN205228480U CN205228480U CN201520998112.0U CN201520998112U CN205228480U CN 205228480 U CN205228480 U CN 205228480U CN 201520998112 U CN201520998112 U CN 201520998112U CN 205228480 U CN205228480 U CN 205228480U
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- China
- Prior art keywords
- circuit
- triode
- resistance
- 74hc14ag
- voltage
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Abstract
The utility model discloses an encoder decoding circuit, including clamp circuit, voltage comparison circuit and filter circuit, the clamp circuit front end is equipped with R19, R52 and R53 clamp resistance, the clamp circuit rear end is equipped with two MMBD7000LT1 switching diode, the last two voltage comparater of LM393, R42 resistance and the triode of being equipped with of voltage comparison circuit, R42 resistance is located between two voltage comparater of LM393 and the triode, last opto -coupler module PS8101 and the reverse ware of 74HC14AG of being equipped with of filter circuit, opto -coupler module PS8101 is located the reverse ware front end of 74HC14AG. The utility model discloses a be equipped with R19, R52 and R53 clamp resistance with the clamp circuit front end, the clamp circuit rear end is equipped with two MMBD7000LT1 switching diode, the last two voltage comparater of LM393, R42 resistance and the triode of being equipped with of voltage comparison circuit, and last opto -coupler module PS8101 and the reverse ware of 74HC14AG of being equipped with of filter circuit can make encoder decoding circuit optimize, and simple structure is convenient for maintain and is detected.
Description
[technical field]
The utility model relates to the technical field of scrambler, particularly the technical field of encoder decodes circuit.
[background technology]
Incremental encoder is usually used in the detection of speed and position, and incremental encoder directly utilizes photoelectricity transformation principle to export three prescription wave impulse A, B and Z phases; AB two group pulse phase 90 °, thus sense of rotation can be judged easily, and Z phase often turns a pulse, locate for reference point, different with absolute type encoder, incremental encoder directly can not obtain the positional information of rotation system, and can only by two positions go out scrambler export pulse calculate.And its circuit structure of general incremental encoder is comparatively complicated, preservation & testing is inconvenient.
[utility model content]
The purpose of this utility model solves the problems of the prior art exactly, proposes a kind of encoder decodes circuit, can make encoder decodes circuit optimization, and structure is simple, is convenient to preservation & testing.
For achieving the above object, the utility model proposes a kind of encoder decodes circuit, comprise clamping circuit, voltage comparator circuit and filtering circuit, described clamping circuit front end is provided with R19, R52 and R53 clamp resistance, described clamping circuit rear end is provided with two MMBD7000LT1 switching diodes, described voltage comparator circuit is provided with LM393 twin voltage comparer, R42 resistance and triode, described R42 resistance is between LM393 twin voltage comparer and triode, described filtering circuit is provided with optical coupling module PS8101 and 74HC14AG reverser, described optical coupling module PS8101 is positioned at 74HC14AG reverser front end.
As preferably, a certain partial fixing of pulse signal in given voltage value, and is kept original waveform shape invariance by described clamping circuit.By R19, R52, R53, the signal of input is pulled to 15V, when by two additional MMBD7000LT1 switching diodes, two switching diodes play the drop-down effect of pull-up.
As preferably, described filtering circuit uses LM393 twin voltage comparer integrated circuit to process signal, compares rear conducting afterwards by triode to current potential.
As preferably, described filtering circuit uses the effects such as the process filtering of optical coupling module PS8101 and the complete pair signals of 74HC14AG reverser, the decoding of final complete pair signals.
The beneficial effects of the utility model: the utility model is by being provided with R19, R52 and R53 clamp resistance by clamping circuit front end, clamping circuit rear end is provided with two MMBD7000LT1 switching diodes, voltage comparator circuit is provided with LM393 twin voltage comparer, R42 resistance and triode, filtering circuit is provided with optical coupling module PS8101 and 74HC14AG reverser, encoder decodes circuit optimization can be made, structure is simple, is convenient to preservation & testing.
Feature of the present utility model and advantage will be described in detail by reference to the accompanying drawings by embodiment.
[accompanying drawing explanation]
Fig. 1 is the planimetric map of a kind of encoder decodes circuit of the utility model;
Fig. 2 is the planimetric map of a kind of encoder decodes circuit of the utility model;
Fig. 3 is the planimetric map of a kind of encoder decodes circuit of the utility model.
[embodiment]
Consult Fig. 1, Fig. 2 and Fig. 3, a kind of encoder decodes circuit of the utility model, comprise clamping circuit, voltage comparator circuit and filtering circuit, described clamping circuit front end is provided with R19, R52 and R53 clamp resistance, described clamping circuit rear end is provided with two MMBD7000LT1 switching diodes, described voltage comparator circuit is provided with LM393 twin voltage comparer, R42 resistance and triode, described R42 resistance is between LM393 twin voltage comparer and triode, described filtering circuit is provided with optical coupling module PS8101 and 74HC14AG reverser, described optical coupling module PS8101 is positioned at 74HC14AG reverser front end, the a certain partial fixing of pulse signal in given voltage value, and is kept original waveform shape invariance by described clamping circuit.By R19, R52, R53, the signal of input is pulled to 15V, when by two additional MMBD7000LT1 switching diodes, two switching diodes play the drop-down effect of pull-up; Described filtering circuit uses LM393 twin voltage comparer integrated circuit to process signal, compares rear conducting afterwards by triode to current potential; Described filtering circuit uses the effects such as the process filtering of optical coupling module PS8101 and the complete pair signals of 74HC14AG reverser, the decoding of final complete pair signals.
Utility model works process:
A kind of encoder decodes circuit of the utility model is in the course of the work:
Clamping circuit: by a certain partial fixing of pulse signal in given voltage value, and keep original waveform shape invariance.By R19, R52, R53, the signal of input is pulled to 15V, when by two additional MMBD7000LT1 switching diodes, two switching diodes play the drop-down effect of pull-up, thus the interference of the burr of erasure signal reaches the effect of filtering, keep the stable of waveform.
Voltage comparator circuit: use LM393 twin voltage comparer integrated circuit to process signal, pass through triode afterwards.The signal entering chip 2 pin compares whether be greater than specific voltage in the voltage of 3 pin.The comparative voltage of 3 pin is 5.7V, and when being greater than 5.7V when the signal of input 2 pin is high level signal, so 1 pin of voltage comparator LM393 is by output high level signal to triode, is carried out being pulled to 15V by voltage by R42 resistance simultaneously.At this moment the base voltage V of triode
b=V
ctriode will be in conducting state.
Filtering circuit: use the effects such as the process filtering of optical coupling module PS8101 and the complete pair signals of 74HC14AG reverser, the decoding of final complete pair signals.When triode ON time, when namely the signal of transistor base is high level signal, base voltage V
b=V
c, triode operation.Can produce a low level signal at 4 pin of chip by PS8101 optical coupling module afterwards, be undertaken oppositely afterwards by 74HC14AG by signal, 74HC14AG also can play the effect of filtering simultaneously.Finally obtain a high level signal.
A kind of encoder decodes circuit of the utility model, by clamping circuit front end is provided with R19, R52 and R53 clamp resistance, clamping circuit rear end is provided with two MMBD7000LT1 switching diodes, voltage comparator circuit is provided with LM393 twin voltage comparer, R42 resistance and triode, filtering circuit is provided with optical coupling module PS8101 and 74HC14AG reverser, can make encoder decodes circuit optimization, structure is simple, is convenient to preservation & testing.
Above-described embodiment is to explanation of the present utility model, is not to restriction of the present utility model, anyly all belongs to protection domain of the present utility model to the scheme after the utility model simple transformation.
Claims (4)
1. an encoder decodes circuit, it is characterized in that: comprise clamping circuit, voltage comparator circuit and filtering circuit, described clamping circuit front end is provided with R19, R52 and R53 clamp resistance, described clamping circuit rear end is provided with two MMBD7000LT1 switching diodes, described voltage comparator circuit is provided with LM393 twin voltage comparer, R42 resistance and triode, described R42 resistance is between LM393 twin voltage comparer and triode, described filtering circuit is provided with optical coupling module PS8101 and 74HC14AG reverser, described optical coupling module PS8101 is positioned at 74HC14AG reverser front end.
2. a kind of encoder decodes circuit as claimed in claim 1, it is characterized in that: described clamping circuit by a certain partial fixing of pulse signal in given voltage value, and keep original waveform shape invariance, pass through R19, R52, the signal of input is pulled to 15V by R53, and when by two additional MMBD7000LT1 switching diodes, two switching diodes play the drop-down effect of pull-up.
3. a kind of encoder decodes circuit as claimed in claim 1, is characterized in that: described filtering circuit uses LM393 twin voltage comparer integrated circuit to process signal, compares rear conducting afterwards by triode to current potential.
4. a kind of encoder decodes circuit as claimed in claim 1, is characterized in that: described filtering circuit uses the process filter effect of optical coupling module PS8101 and the complete pair signals of 74HC14AG reverser, the decoding of final complete pair signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520998112.0U CN205228480U (en) | 2015-12-04 | 2015-12-04 | Encoder decoding circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520998112.0U CN205228480U (en) | 2015-12-04 | 2015-12-04 | Encoder decoding circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205228480U true CN205228480U (en) | 2016-05-11 |
Family
ID=55903537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520998112.0U Expired - Fee Related CN205228480U (en) | 2015-12-04 | 2015-12-04 | Encoder decoding circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205228480U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106991553A (en) * | 2017-03-02 | 2017-07-28 | 河北迈加科技有限公司 | Wisdom logistic management system |
-
2015
- 2015-12-04 CN CN201520998112.0U patent/CN205228480U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106991553A (en) * | 2017-03-02 | 2017-07-28 | 河北迈加科技有限公司 | Wisdom logistic management system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 314300 No. 1070 Lane 88 Yanbei West Road, Wuyuan Street, Haiyan County, Jiaxing City, Zhejiang Province Patentee after: ZHEJIANG JAROL SCIENTIFIC INSTRUMENT CO., LTD. Address before: 314300 Guyuan Village, Haiyan County, Jiaxing City, Zhejiang Province Patentee before: ZHEJIANG JAROL SCIENTIFIC INSTRUMENT CO., LTD. |
|
| CP02 | Change in the address of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160511 Termination date: 20201204 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |