CN106199123A - A kind of wide-voltage switch amount collection isolation circuit - Google Patents
A kind of wide-voltage switch amount collection isolation circuit Download PDFInfo
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- CN106199123A CN106199123A CN201610744107.6A CN201610744107A CN106199123A CN 106199123 A CN106199123 A CN 106199123A CN 201610744107 A CN201610744107 A CN 201610744107A CN 106199123 A CN106199123 A CN 106199123A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/22—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-emitting devices, e.g. LED, optocouplers
Abstract
The invention discloses a kind of wide-voltage switch amount collection isolation circuit; including input current limliting module, reverse protection module, filtration module, isolation and amplifier module; the Width funtion power supply outside input connection of input current limliting module, the outfan of input current limliting module connects the input of filtration module by reverse protection module；Isolation and amplifier module includes photo-coupler, resistance R1, the positive pole of photo-coupler and negative pole are all taken exercise with the output of filtration module and are connected, the colelctor electrode of photo-coupler connects one end of resistance R1, the grounded emitter of photo-coupler, the other end of resistance R1 connects a unidirectional current, and one end of this resistance R1 is also connected with signal output part.The present invention uses input current limliting module to coordinate with photo-coupler, realizing the collection to a range of wide-voltage switch amount and isolation, overcome traditional switch amount Acquisition Circuit because gathering the change of voltage swing, hardware circuit needs to change the shortcoming that just can complete to gather therewith, circuit structure is simple, low cost.
Description
Technical field
The present invention relates to automation collection circuit, particularly relate to a kind of wide-voltage switch amount collection isolation circuit.
Background technology
In power automatic device, the application of switch acquisition is the most universal.Switching value point, close state acquisition necessary
By accessory power supply, accessory power supply is the most all directly to take from the power supply in power automatic device.Owing to power automation fills
Supply voltage in putting generally have what is called " univoltage " and " Width funtion " point.So-called univoltage refers to that power equipment can only adapt to
The line voltage that certain fluctuated in electric power system prescribed limit (such as ± 10%) is fixing, such as China 220V, Japan is 100V, Europe
Continent is 240V, and the U.S. is 120V etc..Therefore switch acquisition by accessory power supply the most also have 110V, 220V point.
Traditional on-off model acquisition interface main circuit will according to demand, and the acquisition interface of design specialized type is this
The shortcoming of tradition acquisition mode is dumb, and specific circuit can only gather demand specific switching value type, works as front end signal
After type changes, need that circuit is made corresponding amendment and just can obtain correct collection signal, as being traditionally used for 110V letter
Number gather circuit, when the demand collection of front end interface becomes 220V, not only performance is difficult to ensure that, have also can cause damage
Adverse consequences, it is therefore desirable to change hardware circuit, thus can bring the lengthening of R&D cycle and the waste of cost.
Summary of the invention
In order to overcome the deficiencies in the prior art, it is an object of the invention to provide a kind of simple in construction, reliable and stable, hardware
The wide-voltage switch amount collection isolation circuit of low cost.
The purpose of the present invention realizes by the following technical solutions:
A kind of wide-voltage switch amount collection isolation circuit, including input current limliting module, reverse protection module, filtration module,
Isolation and amplifier module, the Width funtion power supply outside input connection of input current limliting module, the outfan of input current limliting module leads to
Cross reverse protection module and connect the input of filtration module；Isolation and amplifier module includes photo-coupler, resistance R1, photo-coupler
Positive pole and negative pole are all 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 this resistance R1 is also connected with signal output part.
Preferably, described input current limliting module includes resistance R2 and resistance R3, and one end of resistance R2 connects Width funtion power supply
Live wire end, the other end of resistance R3 connects the zero line side of Width funtion power supply, and the other end of resistance R2 connects the defeated of filtration module
Entering end, the other end of resistance R3 is connected with reverse protection module.
Preferably, described reverse protection module includes diode D1 and resistance R4, and the negative pole of diode D1 connects resistance R3
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, described filtration module includes electric capacity C1 and resistance R5, and one end of electric capacity C1 and one end of resistance R5 connect
The other end of resistance R2, the other end of electric capacity C1 and the other end of resistance R5 connect the positive pole of diode D1, one end of resistance R5
Being also connected with the positive pole of photo-coupler, the other end of resistance R5 is also connected with the negative pole of photo-coupler.
Preferably, the voltage range of described Width funtion power supply is 85-265V.
Compared to existing technology, the beneficial effects of the present invention is:
The present invention uses input current limliting module to coordinate with photo-coupler, it is achieved to a range of wide-voltage switch amount
Gathering and isolation, overcome traditional switch amount Acquisition Circuit because gathering the change of voltage swing, hardware circuit needs to change therewith
Can complete the shortcoming gathered, circuit structure is simple, low cost.
Accompanying drawing explanation
Fig. 1 is the circuit structure diagram of a kind of wide-voltage switch amount collection isolation circuit of the present invention.
Detailed description of the invention
Below, in conjunction with accompanying drawing and detailed description of the invention, the present invention is described further:
Participating in Fig. 1, the present invention provides a kind of wide-voltage switch amount collection isolation circuit, and its circuit structure is simple, reliability
Height, including input current limliting module 1, reverse protection module 2, filtration module 3, isolation and amplifier module 4, inputs the defeated of current limliting module 1
Entering the Width funtion power supply outside end connection, the outfan of input current limliting module 1 connects filtration module 3 by reverse protection module 2
Input, the outfan of filtration module 3 connects isolation and amplifier module 4.
Specifically, input current limliting module 1 includes resistance R2 and resistance R3, and one end of resistance R2 connects Width funtion power supply
The other end of live wire end L, resistance R3 connects the other end of the zero line side N, resistance R2 of Width funtion power supply and connects the defeated of filtration module 3
Entering end, the other end of resistance R3 is connected with reverse protection module 2.Resistance R2 and resistance R3 is current-limiting resistance.
Reverse protection module 2 includes diode D1 and resistance R4, the other end of the negative pole connection resistance R3 of diode D1, 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 of electric capacity C1 and the other end of resistance R5 and connect
The positive pole of diode D1, one end of resistance R5 is also connected with the positive pole of photo-coupler OP1, and the other end of resistance R5 is also connected with optical coupling
The negative pole of device OP1.The colelctor electrode of photo-coupler OP1 connects one end of resistance R1, the grounded emitter of photo-coupler OP1, resistance
The other end of R1 connects a unidirectional current VCC, and one end of this 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 voltage range 85～265V is by inputting
Current limliting module 1 accesses, and is transformed into, through current-limiting resistance R2, R3, the current signal that scope is 0.5～4mA, and current signal is through filtering
Make photo-coupler OP1 turn on after mode block 3, complete wide-voltage switch amount and gather and isolation.DC current signal is 0.5～4mA
During scope, the power consumption on current-limiting resistance R2, R3 is little, and caloric value is low, and has low conducting electric current and the photo-coupler of high CRT value
OP1 all can stably turn on, and completes voltage in the switch acquisition of 85～265V scopes and isolation.
Use the current-limiting resistance of suitable resistance to coordinate with the photo-coupler OP1 of low conducting electric current height CRT value, it is achieved 85～
265V wide-voltage switch amount gathers and isolation, overcomes traditional switch amount Acquisition Circuit to change because gathering voltage, and hardware circuit needs
Change the shortcoming that just can complete to gather therewith.This circuit hardware is simple, and reliability is high, and cost ratio is relatively low.
It will be apparent to those skilled in the art that can technical scheme as described above and design, make other various
Corresponding change and deformation, and all these change and deformation all should belong to the protection domain of the claims in the present invention
Within.
Claims (5)
1. wide-voltage switch amount collection isolation circuit, it is characterised in that include inputting current limliting module, reverse protection module,
Filtration module, isolation and amplifier module, the Width funtion power supply outside input connection of input current limliting module, input 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 of bonder and negative pole are all 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 connects a unidirectional current, and one end of this resistance R1 is also connected with signal output
End.
2. wide-voltage switch amount collection isolation circuit as claimed in claim 1, it is characterised in that described input current limliting module bag
Including resistance R2 and resistance R3, one end of resistance R2 connects the live wire end of Width funtion power supply, and the other end of resistance R3 connects Width funtion
The zero line side of power supply, the other end of resistance R2 connects the input of filtration module, the other end of resistance R3 and reverse protection module
Connect.
3. wide-voltage switch amount collection isolation circuit as claimed in claim 2, it is characterised in that described reverse protection module bag
Including diode D1 and resistance R4, the negative pole of diode D1 connects the other end of resistance R3, and the positive pole of diode D1 connects filtering mould
The input of block, resistance R4 is in parallel with diode D1.
4. wide-voltage switch amount collection isolation circuit as claimed in claim 3, it is characterised in that described filtration module includes electricity
One end of one end and resistance R5 of holding C1 and resistance R5, electric capacity C1 connects the other end of resistance R2, the other end of electric capacity C1 and electricity
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, another of resistance R5
End is also connected with the negative pole of photo-coupler.
5. wide-voltage switch amount collection isolation circuit as claimed in claim 1, it is characterised in that the electricity of described Width funtion power supply
Pressure scope is 85-265V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610744107.6A CN106199123A (en) | 2016-08-26 | 2016-08-26 | A kind of wide-voltage switch amount collection isolation circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610744107.6A CN106199123A (en) | 2016-08-26 | 2016-08-26 | A kind of wide-voltage switch amount collection isolation circuit |
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| CN106199123A true CN106199123A (en) | 2016-12-07 |
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| CN201610744107.6A Pending CN106199123A (en) | 2016-08-26 | 2016-08-26 | A kind of wide-voltage switch amount collection isolation circuit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106685383A (en) * | 2016-12-30 | 2017-05-17 | 苏州万龙电气集团股份有限公司 | Switch value input voltage control circuit |
| CN107888182A (en) * | 2017-11-13 | 2018-04-06 | 广东温氏食品集团股份有限公司 | Domestic animal feeding detection circuit, detection method and detecting system |
| CN109120254A (en) * | 2018-10-09 | 2019-01-01 | 华北电力大学（保定） | A kind of switching value input circuit |
| CN110136416A (en) * | 2019-04-29 | 2019-08-16 | 湖南沛科交通工程技术股份有限公司 | Wireless collection device, control system and control method including the wireless collection device |
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| CN103076490A (en) * | 2011-10-25 | 2013-05-01 | 上海华建电力设备股份有限公司 | Alternating-current 220V input signal acquisition circuit |
| CN104467811A (en) * | 2014-10-31 | 2015-03-25 | 许继电气股份有限公司 | Anti-interference on-off input circuit |
| CN204652348U (en) * | 2015-06-10 | 2015-09-16 | 上海华建电力设备股份有限公司 | A kind of intake Acquisition Circuit device |
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| CN204886923U (en) * | 2015-08-27 | 2015-12-16 | 上海耀华称重系统有限公司 | Switching value input/output circuit |
| CN105577169A (en) * | 2015-12-11 | 2016-05-11 | 中国北方发动机研究所(天津) | Vehicle-used wide-range voltage switching quantity input circuit |
| CN206096223U (en) * | 2016-08-26 | 2017-04-12 | 广州智光自动化有限公司 | Buffer circuit is gathered to wide voltage switch volume |
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2016
- 2016-08-26 CN CN201610744107.6A patent/CN106199123A/en active Pending
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| CN103076490A (en) * | 2011-10-25 | 2013-05-01 | 上海华建电力设备股份有限公司 | Alternating-current 220V input signal acquisition circuit |
| CN102944713A (en) * | 2012-11-26 | 2013-02-27 | 昆山北极光电子科技有限公司 | Switching value isolation method for direct high-voltage input |
| CN104467811A (en) * | 2014-10-31 | 2015-03-25 | 许继电气股份有限公司 | Anti-interference on-off input circuit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106685383A (en) * | 2016-12-30 | 2017-05-17 | 苏州万龙电气集团股份有限公司 | Switch value input voltage control circuit |
| CN107888182A (en) * | 2017-11-13 | 2018-04-06 | 广东温氏食品集团股份有限公司 | Domestic animal feeding detection circuit, detection method and detecting system |
| CN109120254A (en) * | 2018-10-09 | 2019-01-01 | 华北电力大学（保定） | A kind of switching value input circuit |
| CN110136416A (en) * | 2019-04-29 | 2019-08-16 | 湖南沛科交通工程技术股份有限公司 | Wireless collection device, control system and control method including the wireless collection device |
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Application publication date: 20161207 |
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