CN109406864A - Distribution network terminal board remote signalling voltage automatic identification circuit and method - Google Patents
Distribution network terminal board remote signalling voltage automatic identification circuit and method Download PDFInfo
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- CN109406864A CN109406864A CN201811340662.8A CN201811340662A CN109406864A CN 109406864 A CN109406864 A CN 109406864A CN 201811340662 A CN201811340662 A CN 201811340662A CN 109406864 A CN109406864 A CN 109406864A
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- remote signalling
- voltage
- distribution network
- optocoupler
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
- G01R19/2503—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques for measuring voltage only, e.g. digital volt meters (DVM's)
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Abstract
The invention discloses a kind of distribution network terminal board remote signalling voltage automatic identification circuit and methods, divide to input voltage, keep the sampled voltage of output within the set range；Sampled voltage is received, powers on first time remote signalling voltage block and storage, remote signalling filtering every time, voltage threshold compares, fault logic judges and remote signalling output；Optocoupler signal corresponding with remote signalling output signal is exported according to breakdown judge result, and guarantees that optocoupler signal is isolated with remote signalling input signal.The present invention can be realized a wide range of adaptive YX voltage input, save numerous production link problems.
Description
Technical field
The present invention relates to a kind of distribution network terminal board remote signalling voltage automatic identification circuit and methods.
Background technique
Since distribution newly standardizes emergence, distribution class and protection class device end product are to YX board multivoltage compatible parties
Formula demand is obvious, is all fixed voltage input in practical applications, if according to 55% or less demand of technical standard voltage rating
Reliably be failure to actuate, the requirement of 70% or more action message of voltage rating, need to change different board voltages need to configure it is different
Divider resistance and device, this, which will will cause, needs to form multiple quality configuration management files and a variety of components with list BOM, greatly
It is big to influence production speed and on-site maintenance difficulty.
Summary of the invention
The present invention to solve the above-mentioned problems, proposes a kind of distribution network terminal board remote signalling voltage automatic identification circuit and side
Method, the present invention can be realized remote signalling voltage automatic identification, and guarantee powers on the road Hou Mei remote signalling voltage independence self-adapting.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of distribution network terminal board remote signalling voltage automatic identification circuit, including protection partial pressure unit, data acquisition process list
Member and optocoupler output unit, in which:
The protection partial pressure unit, is configured as dividing input voltage, is maintained at the sampled voltage of output and sets
Determine in range, while having the function of preventing electrostatic and placing surge；
The data acquisition process unit is configured as receiving sampled voltage, powers on first time remote signalling voltage block every time
And storage, remote signalling filtering, voltage threshold compares, fault logic judges and remote signalling output；
The optocoupler output unit is configured as being isolated with the remote signalling input signal of data acquisition process unit, according to
The breakdown judge result of data acquisition process unit exports optocoupler signal corresponding with remote signalling output signal.
Further, the protection partial pressure unit includes divider resistance, varistor, diode, transient diode and electricity
Hold, the varistor is connected between Input voltage terminal and ground terminal, the input voltage is rectified connect diode after, by more
A concatenated divider resistance connects ground terminal, and the transient diode and capacitor are connected in parallel on the divider resistance of connection ground terminal respectively
On.
Further, the varistor replaces with air discharge tube.
Further, the divider resistance includes three, for first resistor, second resistance and the third electricity being sequentially connected in series
Resistance, and the transient diode and capacitor are connected in parallel in 3rd resistor respectively.
Further, the data acquisition process unit is single-chip microcontroller, the ground connection of the port VSS connection protection partial pressure unit
End, the port RA2 connect the input terminal of transient diode.
Further, the optocoupler output unit, including optocoupler light emitting diode and power supply, the optocoupler light emitting diode
Input terminal one end connect with the port RA3 of the data acquisition process unit, the other end connect power supply, and the optocoupler shine
Diode and power supply are all made of isolation power supply.
Further, the voltage threshold of the data acquisition process unit relatively in, two voltage thresholds are set, respectively
The 55% and 70% of each input remote signalling voltage.
A kind of distribution network terminal board remote signalling voltage automatic identifying method, comprising the following steps:
Input voltage is divided, keeps the sampled voltage of output within the set range；
Receive sampled voltage, power on first time remote signalling voltage block and storage every time, remote signalling filtering, voltage threshold compare,
Fault logic judgement and remote signalling output；
Optocoupler signal corresponding with remote signalling output signal is exported according to breakdown judge result, and guarantees optocoupler signal and remote signalling
Input signal is isolated.
Through excessive voltage protection circuit after powering on, otherwise whether differentiation remote signalling voltage first is recognized in 0~3.3V acquisition range
To be failure remote signalling, if program it is the same twice by the front and back double sampling comparison of setting delay and on flash inside CPU
Secondary storage remote signalling voltage max decision content comparison, it is different, area's numerical value is updated storage, while exporting remote signals.Program is logical
Cross the front and back double sampling of setting delay.Sentence through remote signalling filtered sample value and flash storage remote signalling voltage max inside CPU
Definite value comparison.It is transfinited by the multiple amplitude variation of remote signalling voltage in the monitoring unit time to detect, electromagnetic interference etc..
Compared with prior art, the invention has the benefit that
1, the present invention can be realized with a low cost a wide range of adaptive YX voltage input, save numerous production link problems.
2, the present invention can guarantee to accomplish to power on the road Hou Mei remote signalling voltage independence self-adapting.Because every channel is all one only
Vertical miniature CPU, no matter in an assembling process since the other parameters such as component error change, total energy output one stabilization, standard
Voltage signal.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 is the structural framing figure of the present embodiment；
Fig. 2 is a kind of specific implementation circuit diagram of the present embodiment；
Specific embodiment:
The invention will be further described with embodiment with reference to the accompanying drawing.
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
In the present invention, term for example "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", " side ",
The orientation or positional relationship of the instructions such as "bottom" is to be based on the orientation or positional relationship shown in the drawings, only to facilitate describing this hair
Bright each component or component structure relationship and the relative of determination, not refer in particular to either component or element in the present invention, cannot understand
For limitation of the present invention.
In the present invention, term such as " affixed ", " connected ", " connection " be shall be understood in a broad sense, and indicate may be a fixed connection,
It is also possible to be integrally connected or is detachably connected；It can be directly connected, it can also be indirectly connected through an intermediary.For
The related scientific research of this field or technical staff can determine the concrete meaning of above-mentioned term in the present invention as the case may be,
It is not considered as limiting the invention.
The present embodiment mainly provides a remote signalling voltage automatic identification circuit, can accomplish to power on the road Hou Mei remote signalling voltage only
It is vertical adaptive.
Specific theory structure block diagram is as shown in Figure 1, include protecting bleeder circuit, data acquisition processing circuit, optocoupler defeated
Circuit three parts form out, in which:
Bleeder circuit is protected, is configured as dividing input voltage, the sampled voltage of output is made to be maintained at setting model
In enclosing, while having the function of preventing electrostatic and placing surge；
Data acquisition processing circuit is configured as receiving sampled voltage, powers on first time remote signalling voltage block every time and deposit
Storage, remote signalling filtering, voltage threshold compares, fault logic judges and remote signalling output；
Optocoupler output circuit is configured as being isolated with the remote signalling input signal of data acquisition process unit, according to data
The breakdown judge result of acquisition process unit exports optocoupler signal corresponding with remote signalling output signal.
As shown in Fig. 2, protecting bleeder circuit as a kind of implementation: including varistor RV4, diode D1, partial pressure
Resistance R1, R2, R3, capacitor C, transient diode TVS, certainly, varistor RV4 could alternatively be air discharge tube, with to prevent
Only thunder and lightning is scurried into, and diode is prevented reversed for D1, and divider resistance R1, R2, R3 are composed in series bleeder circuit and keep sampled voltage
Within the scope of 0~3.3V, transient diode TVS is filtered to Anti-surging, electrostatic equivalent damage U1 acquisition port, capacitor C for burr,
Guarantee acquisition accuracy.
Data acquisition processing circuit: microchipPlC10F32X series monolithic, the working frequency of chip are used
16MHZ, ROM Space 512W, ram space 64B, three road 8bitAD input, internal FLASH is programmable, SOT23-6 encapsulation, completely
It can satisfy functional requirement, and low in cost.
Main to complete to power on first time remote signalling voltage block and storage every time, remote signalling filtering, voltage threshold compares, and failure is patrolled
Collect judgement, the functions such as remote signalling output.
Optocoupler output: being isolated with rear class CPU board remote signalling input, avoids introducing interfering and CPU is caused to damage, optocoupler light-emitting diodes
Pipe and U1 power supply are all made of isolation power supply.
4 kinds of remote signalling threshold voltages calculate as follows:
| Remote signalling voltage (V) | ≤ 55% is failure to actuate | The action message of >=70% |
| 24 | 13.20 | 16.80 |
| 48 | 26.40 | 33.60 |
| 110 | 60.50 | 77.00 |
| 220 | 121.00 | 154.00 |
It is to remote signalling within the scope of 24~220V herein, whether ADC voltage resolution is greater than 55% (i.e. the 13.2V) of 24V no
Whether operation voltage, ADC highest collection voltages are greater than 70% (i.e. 154V) action message time of 220V.Meet the two conditions
It can illustrate that this circuit is met the requirements.
To remote signalling within the scope of 24~220V, what whether ADC voltage resolution was greater than 24V 55% is failure to actuate voltage, ADC highest
Whether collection voltages were greater than for 70% action message time.Meeting the two conditions can illustrate that this circuit is met the requirements.
Minimum voltage is 13.2V (55% minimum voltage), ceiling voltage 154V (70% ceiling voltage).Electric resistance partial pressure selects R1
+ R2=47K Ω, R3=1K Ω；
It can be calculated through partial pressure:
Minimum UL=13.2*1/48=0.275V
Highest UH=154*1/48=3.21V
ADC resolution ratio=3.3/255=0.013
0<(UL, UH)<3.3 known to calculating, and UL>ADC resolution ratio.
UL and UH is within the scope of working power, and ADC resolution ratio can identify minimum voltage UL.I.e. the circuit can expire
Foot remote signalling voltage input from DC24V to DC220V.Why? as not related up and down, many technologies are omitted in inventor
Principle, it is proposed that specific statement in embodiment.
It is exemplified below:
When inputting remote signalling voltage is 24V, it should meet and be failure to actuate less than voltage rating 55%, being greater than voltage rating 70% can
By movement；When incoming level is 24V*55%=13.2V, it is 0.275V that the signal level of U1 can must be inputted by, which being divided, this electricity
The flat resolution ratio greater than AD, and level range can be detected accurately in 0-3.3V acquisition range, sampled value and inside flash
Storage remote signalling voltage max decision content (factory has corrected) comparison, this level are less than decision content, do not export remote signals；Similarly
It is greater than decision content when incoming level is 24V*70%=16.8V, reliably exports remote signals.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (8)
1. a kind of distribution network terminal board remote signalling voltage automatic identification circuit, it is characterized in that: including protection partial pressure unit, data acquisition
Processing unit and optocoupler output unit, in which:
The protection partial pressure unit, is configured as dividing input voltage, and the sampled voltage of output is made to be maintained at setting model
In enclosing, while having the function of preventing electrostatic and placing surge；
The data acquisition process unit is configured as receiving sampled voltage, powers on first time remote signalling voltage block every time and deposit
Storage, remote signalling filtering, voltage threshold compares, fault logic judges and remote signalling output；
The optocoupler output unit is configured as being isolated with the remote signalling input signal of data acquisition process unit, according to data
The breakdown judge result of acquisition process unit exports optocoupler signal corresponding with remote signalling output signal.
2. a kind of distribution network terminal board remote signalling voltage automatic identification circuit as described in claim 1, it is characterized in that: the protection
Partial pressure unit includes divider resistance, varistor, diode, transient diode and capacitor, and the varistor is connected to input
Between voltage end and ground terminal, the input voltage is rectified connect diode after, pass through multiple concatenated divider resistances connection ground connection
End, the transient diode and capacitor are connected in parallel on respectively on the divider resistance of connection ground terminal.
3. a kind of distribution network terminal board remote signalling voltage automatic identification circuit as claimed in claim 2, it is characterized in that: described pressure-sensitive
Resistance replaces with air discharge tube.
4. a kind of distribution network terminal board remote signalling voltage automatic identification circuit as described in claim 1, it is characterized in that: the partial pressure
Resistance includes three, for the first resistor, second resistance and 3rd resistor being sequentially connected in series, and the transient diode and capacitor point
It is not connected in parallel in 3rd resistor.
5. a kind of distribution network terminal board remote signalling voltage automatic identification circuit as described in claim 1, it is characterized in that: the data
Acquisition process unit is single-chip microcontroller, and the ground terminal of the port VSS connection protection partial pressure unit, the port RA2 connects transient diode
Input terminal.
6. a kind of distribution network terminal board remote signalling voltage automatic identification circuit as described in claim 1, it is characterized in that: the optocoupler
Output unit, including optocoupler light emitting diode and power supply, input terminal one end and the data of the optocoupler light emitting diode are adopted
Collect the port the RA3 connection of processing unit, the other end connects power supply, and the optocoupler light emitting diode and power supply are all made of isolation and supply
Electricity.
7. a kind of distribution network terminal board remote signalling voltage automatic identification circuit as described in claim 1, it is characterized in that: the data
The voltage threshold of acquisition process unit relatively in, two voltage thresholds are set, 55% He of respectively each input remote signalling voltage
70%.
8. a kind of distribution network terminal board remote signalling voltage automatic identifying method, it is characterized in that: the following steps are included:
Input voltage is divided, keeps the sampled voltage of output within the set range；
Sampled voltage is received, powers on first time remote signalling voltage block and storage every time, remote signalling filtering, voltage threshold compare, failure
Logic judgment and remote signalling output；
Optocoupler signal corresponding with remote signalling output signal is exported according to breakdown judge result, and guarantees that optocoupler signal and remote signalling input
Signal is isolated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811340662.8A CN109406864A (en) | 2018-11-12 | 2018-11-12 | Distribution network terminal board remote signalling voltage automatic identification circuit and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811340662.8A CN109406864A (en) | 2018-11-12 | 2018-11-12 | Distribution network terminal board remote signalling voltage automatic identification circuit and method |
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| CN109406864A true CN109406864A (en) | 2019-03-01 |
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ID=65472725
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| CN201811340662.8A Pending CN109406864A (en) | 2018-11-12 | 2018-11-12 | Distribution network terminal board remote signalling voltage automatic identification circuit and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112180146A (en) * | 2020-09-10 | 2021-01-05 | 南京国电南自电网自动化有限公司 | Switching value sampling method and system for automatically identifying voltage class |
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| CN112180146B (en) * | 2020-09-10 | 2024-05-28 | 南京国电南自电网自动化有限公司 | Switching value sampling method and system for automatic voltage class identification |
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Address after: 250101 Electric Power Intelligent Robot Production Project 101 in Jinan City, Shandong Province, South of Feiyue Avenue and East of No. 26 Road (ICT Industrial Park) Applicant after: National Network Intelligent Technology Co., Ltd. Address before: 250101 block B, Yinhe building, 2008 Xinjie street, hi tech Zone, Ji'nan, Shandong. Applicant before: Shandong Luneng Intelligent Technology Co., Ltd. |
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Effective date of registration: 20201218 Address after: Room 902, 9 / F, block B, Yinhe building, 2008 Xinluo street, hi tech Zone, Jinan City, Shandong Province Applicant after: Shandong Luneng Software Technology Co.,Ltd. intelligent electrical branch Address before: 250101 power intelligent robot production project 101 south of Feiyue Avenue and east of No.26 Road (in ICT Industrial Park) in Suncun District of Gaoxin, Jinan City, Shandong Province Applicant before: National Network Intelligent Technology Co.,Ltd. |
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Application publication date: 20190301 |