CN202856639U - Anti-interference strong and weak current switching apparatus - Google Patents
Anti-interference strong and weak current switching apparatus Download PDFInfo
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- CN202856639U CN202856639U CN 201220511378 CN201220511378U CN202856639U CN 202856639 U CN202856639 U CN 202856639U CN 201220511378 CN201220511378 CN 201220511378 CN 201220511378 U CN201220511378 U CN 201220511378U CN 202856639 U CN202856639 U CN 202856639U
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Abstract
The utility model provides an anti-interference strong and weak current switching apparatus. According to the utility model, an input module is successively in electric connection with a rectification module, a filtration module, an optical coupling isolation module and an output module; the input module comprises a control signal unit and a high-voltage AC unit; the control signal unit is connected with an on-off input terminal of the rectification module, and a common terminal power supply unit is connected with a common input terminal of the rectification module; the rectification module comprises a second voltage-dividing adjusting capacitor, and a first voltage-dividing capacitor is arranged between and in tandem connection with the high-voltage AC unit and the common input terminal of the rectification module; the output terminal of the first voltage-dividing capacitor is in tandem connection with an input terminal of the second voltage-dividing adjusting capacitor, and the common input terminal of the rectification module is in tandem connection with an output terminal of the second voltage-dividing adjusting capacitor. The utility model has the following beneficial effects: with the above-mentioned technical scheme, signal intensity is increased, which enables anti-interference capability to be improved, quantity of heat is reduced, reliability is improved, and the anti-interference strong and weak current switching apparatus has overvoltage protection capability, which enables application of the apparatus to be more convenient and production efficiency to be high.
Description
Technical field
The utility model belongs to the regulating and controlling field, especially relates to a kind of jamproof strong and weak electricity conversion equipment.
Background technology
In existing technology, single-chip computer control system needs to carry out the strong and weak electricity conversion.This is to have the power supply of single-chip microcomputer to determine, the single-chip microcomputer that has is that 5V has plenty of the 3V power supply, to exchange forceful electric power and can power and use to single-chip microcomputer in order to make, and needs according to the requirement of single-chip microcomputer the light current that exchanges forceful electric power and be converted to 3V or 5V.Many existing equipments or device adopt the electric resistance partial pressure mode to reduce the voltage of forceful electric power signal, because resistance is dissipative cell, when making current reduction arrive certain numerical value, make the energy consumption of resistance strengthen and make its heating, cause easily burning of electric elements, reduced reliability and the useful life of circuit.Such circuit can only be worked under little current status, and antijamming capability is not strong.
Summary of the invention
Problem to be solved in the utility model provides a kind of regulating and controlling device of industrial control field, and the antijamming capability of electric actuator that especially is fit to be applied to by-pass valve control is strong, the strong and weak electricity conversion equipment of stable performance.
For solving the problems of the technologies described above, the technical solution adopted in the utility model comprises input module, rectification module, filtration module, light-coupled isolation module, output module; Input module is electrically connected with rectification module, filtration module, light-coupled isolation module, output module successively; Described input module comprises control signal unit and high-voltage alternating unit; The control signal unit is connected with the switching value input of rectification module, and the common port power supply unit is connected with the public input of rectification module; It is characterized in that: rectification module comprises that the second dividing potential drop adjusts electric capacity, the first dividing potential drop electric capacity of connecting between the public input of high-voltage alternating unit and rectification module; The output of the first dividing potential drop electric capacity is connected with the input that the second dividing potential drop is adjusted electric capacity, and the public input of rectification module is connected with the output that the second dividing potential drop is adjusted electric capacity.
Further, described rectification module also comprises piezo-resistance, and switching value input and the second dividing potential drop are adjusted piezo-resistance in parallel between the input of electric capacity.
Further, described control signal unit links to each other with the live wire of high voltage source, tandem tap circuit between the live wire of control signal unit and power supply.
Further, described power supply unit links to each other with the zero line of power supply, tandem tap circuit between the zero line of power supply unit and high voltage source.
Further, described control signal unit comprises and is not less than a control signal line.
Further, described high-voltage alternating unit comprises and is not less than a high-voltage AC signal line.
Further, described rectification module is rectifier bridge.
Advantage and the good effect that the utlity model has are: owing to adopt technique scheme, increased signal strength signal intensity, thereby improved antijamming capability, caloric value reduces, has increased reliability, and has the overvoltage protection ability, makes application convenient; Have simple in structure, low cost of manufacture, production efficiency advantages of higher.
Description of drawings
Fig. 1 is the circuit theory diagrams of prior art of the present utility model
Fig. 2 is circuit theory diagrams of the present utility model
Among the figure:
1, divider resistance 2, control signal unit 3, high-voltage alternating unit
4, switching value input 5, public input 6, piezo-resistance
7, the first dividing potential drop electric capacity 8, the second dividing potential drop are adjusted electric capacity
Embodiment
The utility model is take the strong and weak electricity conversion equipment of intelligent electric activator as embodiment:
As shown in Figure 1, the technical scheme of the utility model prior art comprises input module, rectification module, filtration module, light-coupled isolation module, output module; Input module is electrically connected with rectification module, filtration module, light-coupled isolation module, output module successively; Described input module comprises control signal unit 2 and high-voltage alternating unit 3; Control signal unit 2 is connected with the switching value input 4 of rectification module, and high-voltage alternating unit 3 is connected with the public input 5 of rectification module;
If high-voltage alternating unit 3 is the 220V Power supply, wherein an end is 4 pin of high-voltage alternating unit, when obtaining current is 10mA, take the R4 loop as example, then the corresponding other end is 1 pin of control signal unit, and divider resistance is R7+R8+R4=220 (V)/0.01 (A)=22K.When 10: 1 dividing potential drops, adopt R7+R8=20K, R4=2K, such 5 pins of high-voltage alternating unit, but input voltage is 220*2/22=20V.R7, R8, the upper energy consumption of R4 is about: 220V*10mA=2.2W
Because other loops are arranged, measured current is less than 2mA in light idol loop.For example: measured current 1mA only in light idol loop.Electric current needs greater than 5mA in the optocoupler loop, just antijamming capability can be arranged.Such R7, R8, R4 need reduce, and increases simultaneously its dissipation power.Because input module comprises forceful electric power input, small volume and be enclosure space that radiating condition is poor, this energy consumption can produce higher temperature.
As shown in Figure 2, comprise input module, rectification module, filtration module, light-coupled isolation module, output module in the technical solution of the utility model; Input module is electrically connected with rectification module, filtration module, light-coupled isolation module, output module successively; Described input module comprises control signal unit 22 and high-voltage alternating unit 3; Control signal unit 22 is connected with the switching value input 4 of rectification module, and the common port power supply unit is connected with the public input 5 of rectification module; It is characterized in that: rectification module comprises that the second dividing potential drop adjusts electric capacity 8, the first dividing potential drop electric capacity 7 of connecting between the public input 5 of high-voltage alternating unit 3 and rectification module; The output of the first dividing potential drop electric capacity 7 is connected with the input that the second dividing potential drop is adjusted electric capacity 8, and the public input 5 of rectification module is connected with the output that the second dividing potential drop is adjusted electric capacity 8.Its role is to: electric capacity is as energy-storage travelling wave tube, is hardly power consumption.So rectification module does not generate heat, improved stability.Adopt the capacitance partial pressure mode also can reduce voltage, adopt the volume capacity cell suitable with resistance, the electric current I a that obtains is greater than the electric resistance partial pressure mode.
Further, described rectification module also comprises piezo-resistance 6, and switching value input 4 and the second dividing potential drop are adjusted piezo-resistance 6 in parallel between the input of electric capacity 8.Its role is to: introduce piezo-resistance 6, when fault, protect it not to be damaged, for example: when artificial wrong electric wire, can cause input voltage increase, electrical network surge.
Further, described control signal unit 2 links to each other with the live wire of high voltage source, tandem tap circuit between the live wire of control signal unit 2 and power supply.
Further, described power supply unit links to each other with the zero line of power supply, tandem tap circuit between the zero line of power supply unit and high voltage source.
Further, described control signal unit 2 comprises and is not less than a control signal line.
Further, described high-voltage alternating unit 3 comprises and is not less than a high-voltage AC signal line.
Further, described rectification module is rectifier bridge.
The course of work of this example: when inputting the AC220V forceful electric power by 4 pins of high-voltage alternating unit 3, C1 and C2, C3, C4 form the dividing potential drop relation, signal produces the input that direct current is added in the light-coupled isolation module by rectification module and filtration module, the output of light-coupled isolation module connects the lead-out terminal of output module, the voltage that produces light current links to each other with the supply voltage of subsequent conditioning circuit, the pull-up resistor of comparable Fig. 1 of pull-up resistor in the subsequent conditioning circuit reduces 10 times, for example+and be 1K during the 5V power supply.Then form isolation by optocoupler and front end.
VAR1, VAR2, VAR3 are the piezo-resistances 6 of 50V, and when 5 pins of high-voltage alternating unit 3 and other three line terminal voltages were higher than 50V, piezo-resistance 6 resistance reduced, and have solved the technical problem of protection rectification module.
More than an embodiment of the present utility model is had been described in detail, but described content only is preferred embodiment of the present utility model, can not be considered to be used to limiting practical range of the present utility model.All equalizations of doing according to the utility model application range change and improve etc., all should still belong within the patent covering scope of the present utility model.
Claims (7)
1. a jamproof strong and weak electricity conversion equipment comprises input module, rectification module, filtration module, light-coupled isolation module, output module; Input module is electrically connected with rectification module, filtration module, light-coupled isolation module, output module successively; Described input module comprises control signal unit and high-voltage alternating unit; The control signal unit is connected with the switching value input of rectification module, and the common port power supply unit is connected with the public input of rectification module; It is characterized in that: rectification module comprises that the second dividing potential drop adjusts electric capacity, the first dividing potential drop electric capacity of connecting between the public input of high-voltage alternating unit and rectification module; The output of the first dividing potential drop electric capacity is connected with the input that the second dividing potential drop is adjusted electric capacity, and the public input of rectification module is connected with the output that the second dividing potential drop is adjusted electric capacity.
2. jamproof strong and weak electricity conversion equipment according to claim 1, it is characterized in that: described rectification module also comprises piezo-resistance, switching value input and the second dividing potential drop are adjusted piezo-resistance in parallel between the input of electric capacity.
3. jamproof strong and weak electricity conversion equipment according to claim 1, it is characterized in that: described control signal unit links to each other with the live wire of high voltage source, tandem tap circuit between the live wire of control signal unit and power supply.
4. jamproof strong and weak electricity conversion equipment according to claim 1, it is characterized in that: described power supply unit links to each other with the zero line of power supply, tandem tap circuit between the zero line of power supply unit and high voltage source.
5. jamproof strong and weak electricity conversion equipment according to claim 1 is characterized in that: described control signal unit comprises and is not less than a control signal line.
6. jamproof strong and weak electricity conversion equipment according to claim 1 is characterized in that: described high-voltage alternating unit 3 comprises and is not less than a high-voltage AC signal line.
7. jamproof strong and weak electricity conversion equipment according to claim 1, it is characterized in that: described rectification module is rectifier bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220511378 CN202856639U (en) | 2012-09-29 | 2012-09-29 | Anti-interference strong and weak current switching apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220511378 CN202856639U (en) | 2012-09-29 | 2012-09-29 | Anti-interference strong and weak current switching apparatus |
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| Publication Number | Publication Date |
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| CN202856639U true CN202856639U (en) | 2013-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220511378 Expired - Fee Related CN202856639U (en) | 2012-09-29 | 2012-09-29 | Anti-interference strong and weak current switching apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103345459A (en) * | 2013-06-05 | 2013-10-09 | 福建星网锐捷通讯股份有限公司 | Switching method and switching circuit based on multiplexing of multiple-processor serial ports on single board |
-
2012
- 2012-09-29 CN CN 201220511378 patent/CN202856639U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103345459A (en) * | 2013-06-05 | 2013-10-09 | 福建星网锐捷通讯股份有限公司 | Switching method and switching circuit based on multiplexing of multiple-processor serial ports on single board |
| CN103345459B (en) * | 2013-06-05 | 2016-03-30 | 福建星网锐捷通讯股份有限公司 | The changing method multiplexing based on the multiple processor serial ports on veneer and commutation circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20150929 |
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| EXPY | Termination of patent right or utility model |