CN206096223U - Buffer circuit is gathered to wide voltage switch volume - Google Patents
Buffer circuit is gathered to wide voltage switch volume Download PDFInfo
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- CN206096223U CN206096223U CN201620960666.6U CN201620960666U CN206096223U CN 206096223 U CN206096223 U CN 206096223U CN 201620960666 U CN201620960666 U CN 201620960666U CN 206096223 U CN206096223 U CN 206096223U
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Abstract
The utility model discloses a buffer circuit is gathered to wide voltage switch volume, including input current limiting module, reverse protective film piece, filter module, isolation output module, outside wide voltage source is connected to input current limiting module's input, and filter module's input is connected to input current limiting module's output through reverse protective film piece, keeping apart output module and including optical coupler, resistance R1, optical coupler's anodal and negative pole all are connected with filter module's output exercise, optical coupler's collecting electrode connecting resistance R1's one end, and optical coupler's emitter ground, resistance R1's an other end connection direct current, signal output part is still connected to this resistance R1's one end. The utility model discloses an input current limiting module and optical coupler cooperation realize overcoming the change of traditional switching value acquisition circuit because of gathering the voltage swing to the collection and the isolation of the wide voltage switch volume of certain limit, and hardware circuit needs to change to accomplish the shortcoming of gathering thereupon, and circuit structure is simple, and is with low costs.
Description
Technical field
This utility model is related to automation collection circuit, more particularly to a kind of wide-voltage switch amount collection isolation circuit.
Background technology
In power automatic device, the application of switch acquisition is very universal.Switching value point, conjunction state collection it is necessary
By accessory power supply, accessory power supply is generally all directly to take from the power supply in power automatic device.As power automation is filled
Supply voltage in putting generally has so-called " univoltage " and " Width funtion " point.So-called univoltage refers to that power equipment can only be adapted to
Certain line voltage fixed of electric power system prescribed limit (such as ± 10%) interior fluctuation, such as China 220V are Japanese for 100V, Europe
Continent is 240V, and the U.S. is 120V etc..Therefore switch acquisition institute by accessory power supply typically also have dividing for 110V, 220V.
Traditional on-off model acquisition interface circuit is main according to demand, and the acquisition interface of design specialized type is this
The shortcoming of traditional acquisition mode is dumb, and specific circuit can only gather the specific switching value type of demand, work as front end signal
After type changes, need to make circuit accordingly to change just can correctly be gathered signal, be such as traditionally used for 110V letters
Number collection circuit, when front end interface demand collection be changed into 220V when, not only performance is difficult to ensure that, have can also cause damage
Adverse consequencess, it is therefore desirable to change hardware circuit, thus can bring the lengthening of R＆D cycle and the waste of cost.
Utility model content
In order to overcome the deficiencies in the prior art, the purpose of this utility model be provide a kind of simple structure, it is reliable and stable,
The low wide-voltage switch amount collection isolation circuit of hardware cost.
The purpose of this utility model employs the following technical solutions realization：
A kind of wide-voltage switch amount gathers isolation circuit, including input current limliting module, reverse protection module, filtration module,
Isolation and amplifier module, the Width funtion power supply being input into outside the input connection of current limliting module, the outfan for being input into current limliting module are led to
Cross the input that reverse protection module connects filtration module；Isolation and amplifier module includes photo-coupler, resistance R1, photo-coupler
Positive pole and negative pole are connected with the outfan of filtration module, and the colelctor electrode of photo-coupler connects one end of resistance R1, photo-coupler
Grounded emitter, the other end of resistance R1 connects a unidirectional current, and one end of resistance R1 is also connected with signal output part.
Preferably, the input current limliting module includes resistance R2 and resistance R3, one end connection Width funtion power supply of resistance R2
Zero line, the other end of resistance R3 connects the zero line side of Width funtion power supply, the other end connection filtration module of resistance R2 it is defeated
Enter end, the other end of resistance R3 is connected with reverse protection module.
Preferably, the reverse protection module includes diode D1 and resistance R4, the negative pole connection resistance R3 of diode D1
The other end, the positive pole of diode D1 connects the input of filtration module, and resistance R4 is in parallel with diode D1.
Preferably, the filtration module includes electric capacity C1 and resistance R5, one end of electric capacity C1 and one end connection of resistance R5
The other end of resistance R2, the other end of the other end and resistance R5 of electric capacity C1 connect the positive pole of diode D1, one end of resistance R5
The positive pole of photo-coupler is also connected with, the other end of resistance R5 is also connected with the negative pole of photo-coupler.
Preferably, the voltage range of the Width funtion power supply is 85-265V.
Compared to existing technology, the beneficial effects of the utility model are：
This utility model is coordinated with photo-coupler using input current limliting module, is realized to a range of wide-voltage switch amount
Collection and isolation, overcome traditional switch amount Acquisition Circuit because of the change of collection voltages size, hardware circuit needs to change therewith
The shortcoming for gathering can be just completed, circuit structure is simple, low cost.
Description of the drawings
Fig. 1 is the circuit structure diagram that a kind of wide-voltage switch amount of the present utility model gathers isolation circuit.
Specific embodiment
Below, with reference to accompanying drawing and specific embodiment, this utility model is described further：
Fig. 1 is participated in, this utility model provides a kind of wide-voltage switch amount and gathers isolation circuit, and its circuit structure is simple, can
It is high by property, including input current limliting module 1, reverse protection module 2, filtration module 3, isolation and amplifier module 4, input current limliting module 1
The outside Width funtion power supply of input connection, the outfan for being input into current limliting module 1 filters mould by the connection of reverse protection module 2
The input of block 3, the outfan connection isolation and amplifier module 4 of filtration module 3.
Specifically, being input into current limliting module 1 includes resistance R2 and resistance R3, one end connection Width funtion power supply of resistance R2
Zero line L, the other end of resistance R3 connect the zero line side N of Width funtion power supply, and the other end of resistance R2 connects the defeated of filtration module 3
Enter end, the other end of resistance R3 is connected with reverse protection module 2.Resistance R2 and resistance R3 are current-limiting resistance.
Reverse protection module 2 includes diode D1 and resistance R4, and the negative pole of diode D1 connects the other end of resistance R3, two
The positive pole of pole pipe D1 connects the input of filtration module 3, and resistance R4 is in parallel with diode D1.
Filtration module 3 includes electric capacity C1 and resistance R5, and isolation and amplifier module 4 includes photo-coupler OP1, resistance R1, electric capacity
One end of C1 and one end of resistance R5 connect the other end of resistance R2, the other end connection two of the other end and resistance R5 of electric capacity C1
The positive pole of pole pipe D1, one end of resistance R5 are also connected with the positive pole of photo-coupler OP1, and the other end of resistance R5 is also connected with photo-coupler
The negative pole of OP1.The colelctor electrode of photo-coupler OP1 connects one end of resistance R1, the grounded emitter of photo-coupler OP1, resistance R1
The other end connect a unidirectional current VCC, one end of resistance R1 is also connected with signal output part OUT.The voltage of unidirectional current VCC is
3.3V to 5V.Resistance R1 is pull-up resistor.
The voltage range of Width funtion power supply is 85-265V.The On-off signal signal of 85～265V of voltage range is by being input into
Current limliting module 1 is accessed, and is transformed into current signal of the scope in 0.5～4mA through current-limiting resistance R2, R3, and current signal Jing is filtered
Turn on photo-coupler OP1 after ripple module 3, complete the collection of wide-voltage switch amount and isolate.DC current signal is in 0.5～4mA
During scope, less, caloric value is low, and has the photo-coupler of low conducting electric current and high CRT values for the power consumption on current-limiting resistance R2, R3
OP1 stably can be turned on, and complete switch acquisition and isolation of the voltage in 85～265V scopes.
Coordinated using the photo-coupler OP1 of the current-limiting resistance of appropriate resistance CRT values high with low conducting electric current, realize 85～
265V wide-voltage switch amount is gathered and is isolated, and overcomes traditional switch amount Acquisition Circuit to change because of collection voltages, and hardware circuit needs
Change the shortcoming that can just complete to gather therewith.The circuit hardware is simple, and reliability is high, and cost is than relatively low.
It will be apparent to those skilled in the art that technical scheme that can be as described above and design, make other various
It is corresponding to change and deformation, and all these change and deformation should all belong to the protection of this utility model claim
Within the scope of.
Claims (5)
1. a kind of wide-voltage switch amount gathers isolation circuit, it is characterised in that including input current limliting module, reverse protection module,
Filtration module, isolation and amplifier module, the Width funtion power supply being input into outside the input connection of current limliting module, are input into current limliting module
Outfan connects the input of filtration module by reverse protection module；Isolation and amplifier module includes photo-coupler, resistance R1, light
The positive pole and negative pole of bonder is connected with the outfan of filtration module, and the colelctor electrode of photo-coupler connects one end of resistance R1,
The grounded emitter of photo-coupler, the other end of resistance R1 connect a unidirectional current, and one end of resistance R1 is also connected with signal output
End.
2. wide-voltage switch amount as claimed in claim 1 gathers isolation circuit, it is characterised in that the input current limliting module bag
Resistance R2 and resistance R3 is included, one end of resistance R2 connects the zero line of Width funtion power supply, the other end connection Width funtion of resistance R3
The zero line side of power supply, the other end of resistance R2 connect the input of filtration module, the other end and the reverse protection module of resistance R3
Connection.
3. wide-voltage switch amount as claimed in claim 2 gathers isolation circuit, it is characterised in that the reverse protection module bag
Diode D1 and resistance R4 is included, the negative pole of diode D1 connects the other end of resistance R3, the positive pole connection filtering mould of diode D1
The input of block, resistance R4 are in parallel with diode D1.
4. wide-voltage switch amount as claimed in claim 3 gathers isolation circuit, it is characterised in that the filtration module includes electricity
Hold the other end of C1 and resistance R5, one end of electric capacity C1 and one end connection resistance R2 of resistance R5, the other end and electricity of electric capacity C1
The other end of resistance R5 connects the positive pole of diode D1, and one end of resistance R5 is also connected with the positive pole of photo-coupler, and resistance R5's is another
End is also connected with the negative pole of photo-coupler.
5. wide-voltage switch amount as claimed in claim 1 gathers isolation circuit, it is characterised in that the electricity of the Width funtion power supply
Pressure scope is 85-265V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620960666.6U CN206096223U (en) | 2016-08-26 | 2016-08-26 | Buffer circuit is gathered to wide voltage switch volume |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620960666.6U CN206096223U (en) | 2016-08-26 | 2016-08-26 | Buffer circuit is gathered to wide voltage switch volume |
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| Publication Number | Publication Date |
|---|---|
| CN206096223U true CN206096223U (en) | 2017-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620960666.6U Active CN206096223U (en) | 2016-08-26 | 2016-08-26 | Buffer circuit is gathered to wide voltage switch volume |
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| CN (1) | CN206096223U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106199123A (en) * | 2016-08-26 | 2016-12-07 | 广州智光自动化有限公司 | A kind of wide-voltage switch amount collection isolation circuit |
| CN109120254A (en) * | 2018-10-09 | 2019-01-01 | 华北电力大学（保定） | A kind of switching value input circuit |
-
2016
- 2016-08-26 CN CN201620960666.6U patent/CN206096223U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106199123A (en) * | 2016-08-26 | 2016-12-07 | 广州智光自动化有限公司 | A kind of wide-voltage switch amount collection isolation circuit |
| CN109120254A (en) * | 2018-10-09 | 2019-01-01 | 华北电力大学（保定） | A kind of switching value input circuit |
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