CN107958586A - A kind of remote signalling adaptive circuit - Google Patents
A kind of remote signalling adaptive circuit Download PDFInfo
- Publication number
- CN107958586A CN107958586A CN201711339100.7A CN201711339100A CN107958586A CN 107958586 A CN107958586 A CN 107958586A CN 201711339100 A CN201711339100 A CN 201711339100A CN 107958586 A CN107958586 A CN 107958586A
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- China
- Prior art keywords
- optocoupler
- current
- resistance
- chip
- schmidt
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Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
Abstract
The invention discloses a kind of remote signalling adaptive circuit, including:Limiting filter circuit, anti-reverse device, optocoupler, current-limiting resistance and the chip for possessing Schmidt's characteristic；The input termination input power of limiting filter circuit, one end of the first end of output terminal and anti-reverse device, optocoupler are connected, and second end is connected with the other end, the optocoupler of anti-reverse device；The output terminal of optocoupler is connected with the input terminal of one end of current-limiting resistance, the chip for possessing Schmidt's characteristic, and the other end of current-limiting resistance is connected with power supply.As it can be seen that the application utilizes the schmidt trigger characteristic of remote signalling adaptive circuit, the less expensive chip for possessing Schmidt's characteristic of the A/D chip of price costly is replaced, in this way, significantly reducing the hardware cost of remote signalling adaptive circuit.
Description
Technical field
The present invention relates to technical field of electric power, more particularly to a kind of remote signalling adaptive circuit.
Background technology
At present, the voltage class of the remote signals in electric system has two kinds of 110V and 220V.Traditional remote signalling circuit is such as
Shown in Fig. 1, Uin is input remote signalling voltage, and Uin carries out strong and weak electric isolution by optocoupler, output voltage U1, and U1 is adopted by AD
Sample chip carries out voltage acquisition and is converted to the judgement that digital signal passes to processor progress threshold value.Wherein, input voltage is worked as
When below 55%Uin threshold values, main control chip thinks that the signal is 0, when input voltage is more than 70%Uin threshold values,
Main control chip thinks that the signal is 1.That is, the threshold value of 110V grades is 60.5V to 77V, and the threshold value of 220V grades is 121V
To 154V.
In existing remote signalling circuit, A/D chip realizes conversion of the analog voltage to digital signal, and processor can monitor in real time
Remote signalling voltage Uin, for different voltage class, flexibly judges the 0/1 of threshold value.But A/D chip is expensive, and AD leads to
The quantity needs in road are consistent with remote signalling number of channels, in this way, with the increase of remote signalling number of channels, the quantity of AD passages is with increasing
Add, and the cost of multichannel A/D chip can be very high.Therefore, how to reduce the cost of remote signalling circuit is that this area needs to solve
Problem.
The content of the invention
The object of the present invention is to provide a kind of remote signalling adaptive circuit, to reduce the cost of remote signalling circuit.
To achieve the above object, the present invention provides a kind of remote signalling adaptive circuit, including:It is limiting filter circuit, anti-reverse
Device, optocoupler, current-limiting resistance and the chip for possessing Schmidt's characteristic；
The input termination input power of the limiting filter circuit, the first end of output terminal and the one of the anti-reverse device
End, the optocoupler are connected, and second end is connected with the other end, the optocoupler of the anti-reverse device；
One end of the output terminal of the optocoupler and the current-limiting resistance, the input terminal of the chip for possessing Schmidt's characteristic
It is connected, the other end of the current-limiting resistance is connected with power supply.
Preferably, the optocoupler includes multiple optocoupler passages, and the optocoupler is specially the optocoupler for integrating multiple optocoupler passages
Device or the optocoupler for multiple independent monochromatic light coupling passages.
Preferably, the optocoupler is specially the optocoupler of binary channels optocoupler or two independent monochromatic light coupling passages,
The current-limiting resistance specifically includes the first current-limiting resistance and the second current-limiting resistance；
The output terminal of first optocoupler passage of the optocoupler and one end of first current-limiting resistance, described possess Schmidt
The first input end of the chip of characteristic is connected, and the other end of first current-limiting resistance is connected with the first power supply；
The output terminal of second optocoupler passage of the optocoupler and one end of second current-limiting resistance, described possess Schmidt
Second input terminal of the chip of characteristic is connected, and the other end of second current-limiting resistance is connected with second source；
Wherein, the chip for possessing Schmidt's characteristic detects the first optocoupler passage and the second optocoupler passage
Output voltage, correspondingly exports the first predetermined level or the second predetermined level.
Preferably, the limiting filter circuit includes first resistor, second resistance and capacitance；
One end of the first resistor and one end of the capacitance, one end of the anti-reverse device and the optocoupler
First input end is connected；The other end of one end of the second resistance and the capacitance, the other end of the anti-reverse device with
And the second input terminal of the optocoupler is connected；The other end of the first resistor, the second resistance the other end with it is described
Input power is connected.
Preferably, the anti-reverse device is specially diode.
Preferably, the first optimization resistance and the second optimization resistance are further included；
The output of one end and one end, the first optocoupler passage of first current-limiting resistance of the first optimization resistance
End is connected, and the other end is connected with the first input end of the chip for possessing Schmidt's characteristic；
The output of one end and one end, the second optocoupler passage of second current-limiting resistance of the second optimization resistance
End is connected, and the other end is connected with the second input terminal of the chip for possessing Schmidt's characteristic.
A kind of remote signalling adaptive circuit provided by the present invention, including:Limiting filter circuit, anti-reverse device, optocoupler, limit
Leakage resistance and the chip for possessing Schmidt's characteristic；Limiting filter circuit input termination input power, the first end of output terminal with
One end of anti-reverse device, optocoupler are connected, and second end is connected with the other end, the optocoupler of anti-reverse device；The output terminal of optocoupler with
One end of current-limiting resistance, the input terminal for the chip for possessing Schmidt's characteristic are connected, and the other end of current-limiting resistance is connected with power supply.Can
See, the application utilizes the schmidt trigger characteristic of remote signalling adaptive circuit, by the A/D chip of price costly with less expensive tool
The chip of standby Schmidt's characteristic is replaced, in this way, significantly reducing the hardware cost of remote signalling adaptive circuit.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is existing remote sensing adaptive circuit schematic diagram；
Fig. 2 is a kind of schematic diagram of remote signalling adaptive circuit provided in an embodiment of the present invention；
Fig. 3 is a kind of circuit diagram of remote signalling adaptive circuit of the embodiment of the present invention.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
All other embodiments obtained without making creative work, belong to the scope of protection of the invention.
Please referring to Fig.1, Fig. 1 is a kind of schematic diagram of remote signalling adaptive circuit provided in an embodiment of the present invention, including:Current limliting
Filter circuit 11, anti-reverse device 12, optocoupler 13, current-limiting resistance 14 and the chip 15 for possessing Schmidt's characteristic；
One end of the input termination input power of limiting filter circuit 11, the first end of output terminal and anti-reverse device 12,
Optocoupler 13 is connected, and second end is connected with the other end, the optocoupler 13 of anti-reverse device 12；
The output terminal of optocoupler 13 is connected with one end of current-limiting resistance 14, the input terminal for the chip for possessing Schmidt's characteristic, limit
The other end of leakage resistance 14 is connected with power supply.
It is appreciated that above-mentioned optocoupler 13 can be the multichannel optocoupler for integrating multiple optocoupler passages, or more
The optocoupler of a independent monochromatic light coupling passage.Certainly, which may also be only the optocoupler of a monochromatic light coupling passage.
The number of required optocoupler passage can make choice according to the actual requirements, be not limited thereto.Above-mentioned anti-reverse device can be
But it is not limited to unilateral diode.
When there is multiple optocoupler passages, the output terminal of each optocoupler passage can have corresponding current-limiting resistance, i.e. each
Optocoupler passage has independent current-limiting resistance.
The above-mentioned chip for possessing Schmidt's characteristic can be specially but be not limited to 74LS245 family chips.Possesses Schmidt
The chip of characteristic can detect the output voltage of each optocoupler passage, and correspondingly outputs level signals.
Preferably, referring to a kind of circuit diagram of the remote signalling adaptive circuit shown in Fig. 3, optocoupler is specially two independent lists
The optocoupler of optocoupler passage, current-limiting resistance specifically include the first current-limiting resistance R1 and the second current-limiting resistance R2；
The output terminal of first optocoupler passage of optocoupler and one end of the first current-limiting resistance R1, the chip for possessing Schmidt's characteristic
245 first input end is connected, and the other end of the first current-limiting resistance R1 is connected with the first power supply V1；
The output terminal of second optocoupler passage of optocoupler and one end of the second current-limiting resistance R2, the chip for possessing Schmidt's characteristic
245 the second input terminal is connected, and the other end of the second current-limiting resistance R2 is connected with second source V2；Wherein, possesses Schmidt spy
Property chip detect the output voltage of the first optocoupler passage and the second optocoupler passage, correspondingly export the first predetermined level or second
Predetermined level.
Specifically, the first predetermined level is high level, and the second predetermined level is low level.That is, possesses Schmidt's characteristic
Chip can detect the output voltage U1 of the first optocoupler passage and the output voltage U2 of the second optocoupler passage, and according to the electricity of U1 and U2
Buckling, correspondingly exports low and high level.
Further, above-mentioned limiting filter circuit includes first resistor R3, second resistance R4 and capacitance；.
One end of first resistor R3 and one end of capacitance, one end of anti-reverse device, that is, unilateral diode and multichannel light
The first input end of coupling is connected；One end of second resistance R4 and the other end of capacitance, the other end of anti-reverse device and more logical
Second input terminal of road optocoupler is connected；The other end of first resistor R3, the other end of second resistance R4 with input power Uin phases
Even.
Further, which can also include the first optimization resistance R5 and the second optimization resistance R6.By rationally setting
The resistance value of two optimization resistance is put, output signal can be optimized.
One end of first optimization resistance R5 is connected with one end of the first current-limiting resistance R1, the output terminal of the first optocoupler passage,
The other end is connected with possessing the first input end of the chip of Schmidt's characteristic；
One end of second optimization resistance R6 is connected with one end of the second current-limiting resistance R2, the output terminal of the second optocoupler passage,
The other end is connected with possessing the second input terminal of the chip of Schmidt's characteristic.
The remote signalling voltage class of existing electric system is generally 110V and 220V, below in conjunction with Fig. 3, introduces input voltage
When Uin is 110V, the course of work of remote signalling adaptive circuit.Wherein, the initial default output level of 245 chips is 0V.
After remote signalling voltage rises to 77V by 0V, at this time, the magnitude of voltage of U1 is precisely the positive threshold electricity of 245 chips
Pressure, after 245 chips detect U1, exports high level 5V, after the GPIO of processor detects 5V level, it is believed that the remote signals are
1；After remote signalling voltage continues to rise to 110V, the magnitude of voltage of U1 alreadys exceed the forward threshold voltage of 245 chips, therefore 245 cores
Piece keeps 5V high level constant；
After remote signalling voltage drops to 60.5V by 110V, the magnitude of voltage of U1 is precisely the negative sense threshold value electricity of 245 chips at this time
Pressure, after 245 chips detect U1, exports low level 0V, after the GPIO of processor detects 0V, it is believed that the remote signals are 0；It is distant
Letter voltage continues to be reduced to 0V, and the magnitude of voltage of U1 is already below the negative sense threshold voltage of 245 chips, therefore 245 chips keep 0V
Low level is constant.
It is appreciated that when remote signalling voltage class is 220V, the course of work of remote signalling adaptive circuit is similar or identical,
This is repeated no more.
Certainly, remote signalling adaptive circuit provided in an embodiment of the present invention not only can be adapted for voltage of 110 and 220V etc.
Level, can be applicable to other voltage class.
A kind of remote signalling adaptive circuit that the embodiment of the present invention is provided, including:Limiting filter circuit, anti-reverse device,
Optocoupler, current-limiting resistance and the chip for possessing Schmidt's characteristic；The input termination input power of limiting filter circuit, the of output terminal
One end of one end and anti-reverse device, optocoupler are connected, and second end is connected with the other end, the optocoupler of anti-reverse device；Optocoupler it is defeated
Outlet is connected with one end of current-limiting resistance, the input terminal for the chip for possessing Schmidt's characteristic, the other end and power supply of current-limiting resistance
It is connected.As it can be seen that the circuit utilizes the schmidt trigger characteristic of remote signalling adaptive circuit, by the A/D chip of price costly with relatively low
The honest and clean chip for possessing Schmidt's characteristic is replaced, in this way, significantly reducing the hardware cost of remote signalling adaptive circuit.
Remote signalling adaptive circuit provided by the present invention is described in detail above.Specific case used herein
The principle of the present invention and embodiment are set forth, the explanation of above example is only intended to help to understand side of the invention
Method and its core concept.It should be pointed out that for those skilled in the art, the principle of the invention is not being departed from
Under the premise of, some improvement and modification can also be carried out to the present invention, these are improved and modification also falls into the claims in the present invention
In protection domain.
Claims (6)
1. a kind of remote signalling adaptive circuit, it is characterised in that including limiting filter circuit, anti-reverse device, optocoupler, current-limiting resistance
With the chip for possessing Schmidt's characteristic；
One end of the input termination input power of the limiting filter circuit, the first end of output terminal and the anti-reverse device,
The optocoupler is connected, and second end is connected with the other end, the optocoupler of the anti-reverse device；
The output terminal of the optocoupler and one end of the current-limiting resistance, the input terminal phase of the chip for possessing Schmidt's characteristic
Even, the other end of the current-limiting resistance is connected with power supply.
2. remote signalling adaptive circuit according to claim 1, it is characterised in that the optocoupler includes multiple optocoupler passages,
The optocoupler is specially to integrate the optocoupler of multiple optocoupler passages or the optocoupler for multiple independent monochromatic light coupling passages.
3. remote signalling adaptive circuit according to claim 2, it is characterised in that the optocoupler is specially binary channels optical coupler
The optocoupler of part or two independent monochromatic light coupling passages, the current-limiting resistance specifically include the first current-limiting resistance and the second current limliting
Resistance；
The output terminal of first optocoupler passage of the optocoupler and one end of first current-limiting resistance, described possess Schmidt's characteristic
The first input end of chip be connected, the other end of first current-limiting resistance is connected with the first power supply；
The output terminal of second optocoupler passage of the optocoupler and one end of second current-limiting resistance, described possess Schmidt's characteristic
The second input terminal of chip be connected, the other end of second current-limiting resistance is connected with second source；
Wherein, the chip for possessing Schmidt's characteristic detects the output of the first optocoupler passage and the second optocoupler passage
Voltage, correspondingly exports the first predetermined level or the second predetermined level.
4. remote signalling adaptive circuit according to claim 3, it is characterised in that the limiting filter circuit includes the first electricity
Resistance, second resistance and capacitance；
One end of the first resistor and the first of one end of the capacitance, one end of the anti-reverse device and the optocoupler
Input terminal is connected；One end of the second resistance and the other end of the capacitance, the other end of the anti-reverse device and institute
The second input terminal for stating optocoupler is connected；The other end of the first resistor, the second resistance the other end with the input
Power supply is connected.
5. remote signalling adaptive circuit according to claim 4, it is characterised in that the anti-reverse device is specially two level
Pipe.
6. remote signalling adaptive circuit according to claim 5, it is characterised in that further include the first optimization resistance and second excellent
Change resistance；
One end of the first optimization resistance and one end of first current-limiting resistance, the output terminal phase of the first optocoupler passage
Even, the other end is connected with the first input end of the chip for possessing Schmidt's characteristic；
One end of the second optimization resistance and one end of second current-limiting resistance, the output terminal phase of the second optocoupler passage
Even, the other end is connected with the second input terminal of the chip for possessing Schmidt's characteristic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711339100.7A CN107958586A (en) | 2017-12-14 | 2017-12-14 | A kind of remote signalling adaptive circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711339100.7A CN107958586A (en) | 2017-12-14 | 2017-12-14 | A kind of remote signalling adaptive circuit |
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| CN107958586A true CN107958586A (en) | 2018-04-24 |
Family
ID=61958664
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| CN201711339100.7A Pending CN107958586A (en) | 2017-12-14 | 2017-12-14 | A kind of remote signalling adaptive circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109406864A (en) * | 2018-11-12 | 2019-03-01 | 山东鲁能智能技术有限公司 | Distribution network terminal board remote signalling voltage automatic identification circuit and method |
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| CN202931282U (en) * | 2012-11-29 | 2013-05-08 | 江苏省电力公司南京供电公司 | General telecommand acquisition module for distribution network terminal |
| CN203840059U (en) * | 2014-05-07 | 2014-09-17 | 航天科工深圳（集团）有限公司 | Remote-signaling acquisition device |
| CN205647018U (en) * | 2015-11-26 | 2016-10-12 | 国家电网公司 | Circuit breaker controller based on syllogic electric current method cooperation communication system |
| CN206099939U (en) * | 2016-09-05 | 2017-04-12 | 南京大全自动化科技有限公司 | Switching signal volume input circuit that area keeps apart |
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2017
- 2017-12-14 CN CN201711339100.7A patent/CN107958586A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2263840Y (en) * | 1995-12-26 | 1997-10-01 | 长白计算机股份有限公司沈阳计算机通讯设备总公司 | Distributed multifunction remote terminal apparatus |
| CN202931282U (en) * | 2012-11-29 | 2013-05-08 | 江苏省电力公司南京供电公司 | General telecommand acquisition module for distribution network terminal |
| CN203840059U (en) * | 2014-05-07 | 2014-09-17 | 航天科工深圳（集团）有限公司 | Remote-signaling acquisition device |
| CN205647018U (en) * | 2015-11-26 | 2016-10-12 | 国家电网公司 | Circuit breaker controller based on syllogic electric current method cooperation communication system |
| CN206099939U (en) * | 2016-09-05 | 2017-04-12 | 南京大全自动化科技有限公司 | Switching signal volume input circuit that area keeps apart |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109406864A (en) * | 2018-11-12 | 2019-03-01 | 山东鲁能智能技术有限公司 | Distribution network terminal board remote signalling voltage automatic identification circuit and method |
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Application publication date: 20180424 |
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