CN205644529U - A anti -interference protection circuit structure for drive circuit - Google Patents
A anti -interference protection circuit structure for drive circuit Download PDFInfo
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- CN205644529U CN205644529U CN201620280803.1U CN201620280803U CN205644529U CN 205644529 U CN205644529 U CN 205644529U CN 201620280803 U CN201620280803 U CN 201620280803U CN 205644529 U CN205644529 U CN 205644529U
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Abstract
The utility model relates to an anti -interference protection circuit structure for drive circuit, including anti -interference module and overload overcurrent protector, anti -interference module include dynamicizer, filter and serial -to -parallel converter, the pending control signal of input of dynamicizer, the filter include filter circuit and harmonic shortwave circuit, the output signal warp of dynamicizer the input of filter circuit and harmonic shortwave circuit serial -to -parallel converter, serial -to -parallel converter's output signal input overload overcurrent protector. Adopting an anti -interference protection circuit structure for drive circuit of this kind of structure, further having improved the interference killing feature of circuit, can avoid interfering signal to make the situation that the silicon controlled rectifier life -span reduces, it makes driven load job stabilization reliable to increase overload overcurrent protector, increase by one to drive circuit and heavily protect, have more extensive range of application.
Description
Technical field
This utility model 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 by various interference, interference source is generally divided into external disturbance and internal interference, and the main source of external disturbance has: the fluctuation of power generating facilities and power grids, the electromagnetic radiation of start and stop, high pressure equipment and electromagnetic switch of large-scale electric equipment (such as overhead traveling crane, electric furnace, electric welding machine etc.), the common mode disturbances etc. of transmission cable.Internal interference mainly has: the impact etc. that the potential difference that the instability of systems soft ware, distribution capacity or the interference of distributed inductance generation, multipoint earthing cause is brought to system.
The most conventional drive circuit, is typically all and uses control circuit direct controlling and driving circuit, by input control signal to control circuit, then connects voltage by 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.
Utility model content
The purpose of this utility model 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 the present utility model has a 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 is through the deserializer described in described filter circuit and the input of 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 that 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 utility model, have the advantages that
(1) by using immunity module, improve capacity of resisting disturbance and the acquisition precision of whole system, after immunity module is by using parallel-to-serial converter that parallel signal is converted into series signals, can preferably filter and process with rectification, series signals after being filtered by deserializer again 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 preferably signal guarantee；
(2) owing to using high-performance, the device of 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 avoid 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 the present utility model.
Reference:
100
Immunity module
110
Parallel-to-serial converter
120
Filter
121
Filter circuit
122
Harmonic wave shortwave circuit
130
Deserializer
200
Overload flow protector
Detailed description of the invention
In order to more clearly describe technology contents of the present utility model, conduct further description below in conjunction with specific embodiment.
To achieve these goals, anti-interference protective circuit structure for drive circuit of the present utility model 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.
Immunity module 100, by using after parallel signal is converted into series signals by parallel-to-serial converter 110, can preferably filter and rectification processes, then by 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 avoid 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 use the matured product sold on market, select suitable model and producer according to the parameters of drive circuit.Can amass, with selective body, the product that integrated level is high when selecting, by using high-performance, the device of 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 on market sell matured product, the such as product such as wave filter, filter capacitor, according to filtering need select different filtering product structures.
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, prevent the damage of peak voltage, improve drive circuit and the protected effect of load itself further.
Of the present utility model in the technical scheme of the anti-interference protective circuit structure of drive circuit; each wherein included function device and modular device all can be corresponding to actual particular hardware circuit structures; therefore these modules and unit merely with hardware circuit it is achieved that need not assist and i.e. can be automatically obtained corresponding function with the specific software that controls.
Have employed the anti-interference protective circuit structure for drive circuit in this utility model, have the advantages that
(1) by using immunity module, improve capacity of resisting disturbance and the acquisition precision of whole system, after immunity module is by using parallel-to-serial converter that parallel signal is converted into series signals, can preferably filter and process with rectification, series signals after being filtered by deserializer again 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 preferably signal guarantee；
(2) owing to using high-performance, the device of 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 avoid 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, this utility model is described with reference to its specific embodiment.But it is clear that still may be made that various modifications and alterations are without departing from spirit and scope of the present utility model.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 is through the deserializer described in described filter circuit and the input of harmonic wave shortwave circuit, the overload flow protector described in output signal input of described deserializer.
Anti-interference protective circuit structure for drive circuit the most 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.
Anti-interference protective circuit structure for drive circuit the most according to claim 2, it is characterised in that described photoelectrical coupler is TLP521 photoelectrical coupler.
Anti-interference protective circuit structure for drive circuit the most according to claim 1, it is characterised in that described deserializer is SN65LV1224B deserializer or NJU3711M deserializer.
Anti-interference protective circuit structure for drive circuit the most 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.
Anti-interference protective circuit structure for drive circuit the most according to claim 1, it is characterised in that described harmonic wave shortwave circuit includes that the 4th electric capacity and the 5th electric capacity, the 4th described electric capacity and the 5th electric capacity are in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620280803.1U CN205644529U (en) | 2016-04-07 | 2016-04-07 | A anti -interference protection circuit structure for drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620280803.1U CN205644529U (en) | 2016-04-07 | 2016-04-07 | A anti -interference protection circuit structure for drive circuit |
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| Publication Number | Publication Date |
|---|---|
| CN205644529U true CN205644529U (en) | 2016-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620280803.1U Active CN205644529U (en) | 2016-04-07 | 2016-04-07 | A anti -interference protection circuit structure for drive circuit |
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| Country | Link |
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| CN (1) | CN205644529U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105763029A (en) * | 2016-04-07 | 2016-07-13 | 无锡矽瑞微电子股份有限公司 | Overload over current protection anti-interference driving circuit |
-
2016
- 2016-04-07 CN CN201620280803.1U patent/CN205644529U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105763029A (en) * | 2016-04-07 | 2016-07-13 | 无锡矽瑞微电子股份有限公司 | Overload over current protection anti-interference driving circuit |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A anti -interference protection circuit structure for drive circuit Effective date of registration: 20181205 Granted publication date: 20161012 Pledgee: Agricultural Bank of China Limited by Share Ltd Wuxi science and Technology Branch Pledgor: WUXI SIRISE MICROELECTRONICS CO., LTD. Registration number: 2018990001156 |