CN105763029A - Overload over current protection anti-interference driving circuit - Google Patents
Overload over current protection anti-interference driving circuit Download PDFInfo
- Publication number
- CN105763029A CN105763029A CN201610210960.XA CN201610210960A CN105763029A CN 105763029 A CN105763029 A CN 105763029A CN 201610210960 A CN201610210960 A CN 201610210960A CN 105763029 A CN105763029 A CN 105763029A
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- Prior art keywords
- circuit
- parallel
- electric capacity
- interference
- filter
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/12—Arrangements for reducing harmonics from ac input or output
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/12—Arrangements for reducing harmonics from ac input or output
- H02M1/126—Arrangements for reducing harmonics from ac input or output using passive filters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/325—Means for protecting converters other than automatic disconnection with means for allowing continuous operation despite a fault, i.e. fault tolerant converters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Power Conversion In General (AREA)
Abstract
The invention relates to an anti-interference protection circuit structure for a driving circuit, which comprises an anti-interference module and an overload over current protector, wherein the anti-interference module comprises a parallel-serial converter, a filter and a serial-parallel converter; a to-be-processed control signal is inputted in the input end of the parallel-serial converter; the filter comprises a filter circuit and a harmonic shortwave circuit; the output signal of the parallel-serial converter is inputted to the serial-parallel converter via the filter circuit and the harmonic shortwave circuit; and the output signal of the serial-parallel converter is inputted to the overload over current protector. By adopting the anti-interference protection circuit structure for the driving circuit with the above structure, the anti-interference ability of the circuit is further improved, a situation in which the service life of a thyristor is reduced due to an interference signal can be avoided, the driven load can work stably and reliably, and as the overload over current protector is added, protection is added to the driving circuit, and the application range is wider.
Description
Technical field
Patent of the present invention relates to technical field of integrated circuits, particularly relates to circuit anti-interference technical field, specifically refers to a kind of anti-interference protective circuit structure for drive circuit.
Background technology
In the transmitting procedure driving signal, inevitably it is subject to various interference, interference source is generally divided into external disturbance and internal interference, and the main source of external disturbance has: the common mode disturbances etc. of the fluctuation of power generating facilities and power grids, the start and stop of large-scale electric equipment (such as overhead traveling crane, electric furnace, electric welding machine etc.), high pressure equipment and the electromagnetic radiation of electromagnetic switch, transmission cable.Internal interference mainly has: the impact etc. that the potential difference that interference that the instability of systems soft ware, distribution capacity or distributed inductance produce, multipoint earthing cause is brought to system.
Drive circuit conventional at present, is typically all employing control circuit direct controlling and driving circuit, by inputting control signal to control circuit, connects voltage again through control circuit conversion and control drive circuit, makes load be operated.But, in the environment of transition high energy pulse interference, current drive circuit is made not add the drive circuit of anti-jamming circuit easily by external interference, such as interference can make control circuit receive misoperation signal, carry out false triggering, load instantaneous is started and instantaneous shutoff, poor anti jamming capability, also reduce the service life of various load.
Summary of the invention
The purpose of patent of the present invention is the shortcoming overcoming above-mentioned prior art, it is provided that a kind of be capable of having good capacity of resisting disturbance, stable and reliable in work, load service life can be improved, there is the anti-interference protective circuit structure for drive circuit of broader applications scope.
To achieve these goals, the anti-interference protective circuit structure for drive circuit of patent of the present invention has following composition:
This is used for the anti-interference protective circuit structure of drive circuit, it is mainly characterized by, described circuit structure includes immunity module and overload flow protector, described immunity module includes parallel-to-serial converter, filter and deserializer, the input of described parallel-to-serial converter inputs pending control signal, described filter includes filter circuit and harmonic wave shortwave circuit, the output signal of described parallel-to-serial converter inputs described deserializer through described filter circuit and harmonic wave shortwave circuit, the overload flow protector described in output signal input of described deserializer.
It is preferred that described immunity module also includes photoelectrical coupler, described pending control signal is through the input of the parallel-to-serial converter described in described photoelectrical coupler input.
More preferably, described photoelectrical coupler is TLP521 photoelectrical coupler.
It is preferred that described deserializer is SN65LV1224B deserializer or NJU3711M deserializer.
It is preferred that described filter circuit includes the first electric capacity, the second electric capacity, the 3rd electric capacity and ring-shaped inductors, it is connected in parallel with the 3rd described electric capacity and ring-shaped inductors after described the first electric capacity, the second capacitances in series.
It is preferred that described harmonic wave shortwave circuit includes the 4th electric capacity and the 5th electric capacity, the 4th described electric capacity and the 5th electric capacity are in series.
Have employed the anti-interference protective circuit structure for drive circuit in this patent of invention, have the advantages that
(1) by adopting immunity module, improve capacity of resisting disturbance and the acquisition precision of whole system, immunity module is by after adopting parallel-to-serial converter that parallel signal is converted into series signals, better filtering can be carried out and rectification processes, again through deserializer, the series signals after filtration is converted back into parallel signal, is used for driving control, also add photoelectrical coupler on this basis, by photoelectrical coupler and filter twofold filter, it is provided that better signal guarantee；
(2) owing to adopting the device of high-performance, microencapsulated, the design and integral installation of veneer realize miniaturization, more meet the requirement of integrated circuit, adapt to the demand of society market development；
(3) filter includes filter circuit and harmonic wave short circuit current, while wave filter filters unwanted interference signal, harmonic wave shortwave circuit has harmonic wave effect, prevent loop from disturbing, further increase the capacity of resisting disturbance of circuit, can avoiding interference signal and make the situation of controllable silicon service life reduction, it makes loaded work piece reliable and stable；
(4) by increasing overload flow protector, drive circuit is increased by one and heavily protects, extend the life-span of whole electric current and load, it is adaptable to the driving of various occasions, there is wider application scope.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the anti-interference protective circuit structure for drive circuit of patent of the present invention.
Accompanying drawing labelling:
100 immunity module
110 parallel-to-serial converters
120 filters
121 filter circuits
122 harmonic wave shortwave circuit
130 deserializers
200 overload flow protectors
Detailed description of the invention
In order to more clearly describe the technology contents of patent of the present invention, conduct further description below in conjunction with specific embodiment.
To achieve these goals, the anti-interference protective circuit structure for drive circuit of patent of the present invention includes immunity module 100 and overload flow protector 200, described immunity module 100 includes parallel-to-serial converter 110, filter 120 and deserializer 130, the input of described parallel-to-serial converter 110 inputs pending control signal, described filter 120 includes filter circuit 121 and harmonic wave shortwave circuit 122, the output signal of described parallel-to-serial converter 110 inputs described deserializer 130 through described filter circuit 121 and harmonic wave shortwave circuit 122, the overload flow protector 200 described in output signal input of described deserializer 130.
After parallel signal is converted into series signals by employing parallel-to-serial converter 110 by immunity module 100, it is possible to carry out better filtering and rectification processes, again through deserializer 130, the series signals after filtration is converted back into parallel signal, is used for driving control.
Filter 120 includes filter circuit 121 and harmonic wave short circuit current 122, while wave filter filters unwanted interference signal, harmonic wave shortwave circuit 122 has harmonic wave effect, prevent loop from disturbing, further increase the capacity of resisting disturbance of circuit, can avoiding interference signal and make the situation of controllable silicon service life reduction, it makes loaded work piece reliable and stable.
It is preferred that described immunity module also includes photoelectrical coupler, described pending control signal is through the input of the parallel-to-serial converter 110 described in described photoelectrical coupler input.
More preferably, described photoelectrical coupler is TLP521 photoelectrical coupler.
It is preferred that described deserializer 130 is SN65LV1224B deserializer or NJU3711M deserializer.
In actual applications, parallel-to-serial converter 110, deserializer 130 and photoelectrical coupler can adopt the matured product sold on market, select suitable model and producer according to the parameters of drive circuit.The product that integrated level is high can be amassed by selective body when selecting, by adopting the device of high-performance, microencapsulated, the design and integral installation of veneer realize miniaturization, more meets the requirement of integrated circuit.
It is preferred that described filter circuit 121 includes the first electric capacity, the second electric capacity, the 3rd electric capacity and ring-shaped inductors, it is connected in parallel with the 3rd described electric capacity and ring-shaped inductors after described the first electric capacity, the second capacitances in series.
In actual applications, filter circuit can also select the matured product sold on market, for instance the product such as wave filter, filter capacitor, according to the filtering product structure needing selection different filtered.
Preferably, described harmonic wave shortwave circuit 122 includes the 4th electric capacity and the 5th electric capacity, the 4th described electric capacity and the 5th electric capacity are in series, the signal of described filter circuit 121 output is processed, prevent from circuit from returning to disturb, improve the capacity of resisting disturbance of circuit further, improve the Stability and veracity of control signal transmission.
In actual applications, in order to filter transient peak voltage, it is also possible to increase two-way transient state killer tube in parallel and only stone electric current at power supply place, it is prevented that the damage of peak voltage, the protected effect to drive circuit and load itself is improved further.
In the technical scheme of the anti-interference protective circuit structure being used for drive circuit of patent of the present invention; each wherein included function device and modular device all can correspond to actual particular hardware circuit structure; therefore these modules and unit merely with hardware circuit it is achieved that need not assist and namely can be automatically obtained corresponding function with specific control software design.
Have employed the anti-interference protective circuit structure for drive circuit in this patent of invention, have the advantages that
(1) by adopting immunity module, improve capacity of resisting disturbance and the acquisition precision of whole system, immunity module is by after adopting parallel-to-serial converter that parallel signal is converted into series signals, better filtering can be carried out and rectification processes, again through deserializer, the series signals after filtration is converted back into parallel signal, is used for driving control, also add photoelectrical coupler on this basis, by photoelectrical coupler and filter twofold filter, it is provided that better signal guarantee；
(2) owing to adopting the device of high-performance, microencapsulated, the design and integral installation of veneer realize miniaturization, more meet the requirement of integrated circuit, adapt to the demand of society market development；
(3) filter includes filter circuit and harmonic wave short circuit current, while wave filter filters unwanted interference signal, harmonic wave shortwave circuit has harmonic wave effect, prevent loop from disturbing, further increase the capacity of resisting disturbance of circuit, can avoiding interference signal and make the situation of controllable silicon service life reduction, it makes loaded work piece reliable and stable；
(4) by increasing overload flow protector, drive circuit is increased by one and heavily protects, extend the life-span of whole electric current and load, it is adaptable to the driving of various occasions, there is wider application scope.
In this description, patent of the present invention is described with reference to its specific embodiment.But it is clear that still may be made that various amendment and the conversion spirit and scope without departing from patent of the present invention.Therefore, specification and drawings is regarded in an illustrative, rather than a restrictive.
Claims (6)
1. the anti-interference protective circuit structure for drive circuit, it is characterized in that, described circuit structure includes immunity module and overload flow protector, described immunity module includes parallel-to-serial converter, filter and deserializer, the input of described parallel-to-serial converter inputs pending control signal, described filter includes filter circuit and harmonic wave shortwave circuit, the output signal of described parallel-to-serial converter inputs described deserializer through described filter circuit and harmonic wave shortwave circuit, the overload flow protector described in output signal input of described deserializer.
2. the anti-interference protective circuit structure for drive circuit according to claim 1; it is characterized in that; described immunity module also includes photoelectrical coupler, and described pending control signal is through the input of the parallel-to-serial converter described in described photoelectrical coupler input.
3. the anti-interference protective circuit structure for drive circuit according to claim 2, it is characterised in that described photoelectrical coupler is TLP521 photoelectrical coupler.
4. the anti-interference protective circuit structure for drive circuit according to claim 1, it is characterised in that described deserializer is SN65LV1224B deserializer or NJU3711M deserializer.
5. the anti-interference protective circuit structure for drive circuit according to claim 1; it is characterized in that; described filter circuit includes the first electric capacity, the second electric capacity, the 3rd electric capacity and ring-shaped inductors, is connected in parallel with the 3rd described electric capacity and ring-shaped inductors after described the first electric capacity, the second capacitances in series.
6. the anti-interference protective circuit structure for drive circuit according to claim 1, it is characterised in that described harmonic wave shortwave circuit includes the 4th electric capacity and the 5th electric capacity, and the 4th described electric capacity and the 5th electric capacity are in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610210960.XA CN105763029A (en) | 2016-04-07 | 2016-04-07 | Overload over current protection anti-interference driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610210960.XA CN105763029A (en) | 2016-04-07 | 2016-04-07 | Overload over current protection anti-interference driving circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105763029A true CN105763029A (en) | 2016-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610210960.XA Pending CN105763029A (en) | 2016-04-07 | 2016-04-07 | Overload over current protection anti-interference driving circuit |
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| Country | Link |
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| CN (1) | CN105763029A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107070362A (en) * | 2017-03-24 | 2017-08-18 | 成都佰思汇信科技有限责任公司 | Anti-jamming motor drive circuit with current protection |
| CN108494501A (en) * | 2018-05-21 | 2018-09-04 | 广州汇专工具有限公司 | Anti-interference data transmission circuit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201975775U (en) * | 2011-01-05 | 2011-09-14 | 南京信息工程大学 | Surge protector of industrial control signal circuit |
| CN203191663U (en) * | 2013-02-26 | 2013-09-11 | 深圳市华源显示技术有限公司 | Liquid crystal module and drive signal filtering device thereof |
| CN204667394U (en) * | 2015-06-04 | 2015-09-23 | 芜湖固高自动化技术有限公司 | A kind of serial communication driving circuit of industrial robot teaching control circuit |
| CN205644529U (en) * | 2016-04-07 | 2016-10-12 | 无锡矽瑞微电子股份有限公司 | A anti -interference protection circuit structure for drive circuit |
-
2016
- 2016-04-07 CN CN201610210960.XA patent/CN105763029A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201975775U (en) * | 2011-01-05 | 2011-09-14 | 南京信息工程大学 | Surge protector of industrial control signal circuit |
| CN203191663U (en) * | 2013-02-26 | 2013-09-11 | 深圳市华源显示技术有限公司 | Liquid crystal module and drive signal filtering device thereof |
| CN204667394U (en) * | 2015-06-04 | 2015-09-23 | 芜湖固高自动化技术有限公司 | A kind of serial communication driving circuit of industrial robot teaching control circuit |
| CN205644529U (en) * | 2016-04-07 | 2016-10-12 | 无锡矽瑞微电子股份有限公司 | A anti -interference protection circuit structure for drive circuit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107070362A (en) * | 2017-03-24 | 2017-08-18 | 成都佰思汇信科技有限责任公司 | Anti-jamming motor drive circuit with current protection |
| CN108494501A (en) * | 2018-05-21 | 2018-09-04 | 广州汇专工具有限公司 | Anti-interference data transmission circuit |
| CN108494501B (en) * | 2018-05-21 | 2024-05-17 | 汇专科技集团股份有限公司 | Anti-interference data transmission circuit |
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Application publication date: 20160713 |
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