CN103973295B - A kind of Nuclear Power Plant Simulation amount signal isolation distributor - Google Patents
A kind of Nuclear Power Plant Simulation amount signal isolation distributor Download PDFInfo
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- CN103973295B CN103973295B CN201410203810.7A CN201410203810A CN103973295B CN 103973295 B CN103973295 B CN 103973295B CN 201410203810 A CN201410203810 A CN 201410203810A CN 103973295 B CN103973295 B CN 103973295B
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- 238000002955 isolation Methods 0.000 title claims abstract description 19
- 238000004088 simulation Methods 0.000 title claims abstract description 11
- 238000004804 winding Methods 0.000 claims abstract description 29
- 230000005669 field effect Effects 0.000 claims abstract description 18
- 239000003990 capacitor Substances 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 230000001052 transient effect Effects 0.000 claims description 7
- 230000001629 suppression Effects 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Abstract
A kind of Nuclear Power Plant Simulation amount signal isolation distributor, is related to Electric signal processing technical field, and the solution is to improve signal transmission distance and anti-electromagnetic interference capability.The device includes signal conversion unit, operational amplifier, field-effect tube, power module and multiple isolating transformers；Analog signals are by being sequentially connected in series the primary side winding of each isolating transformer to the output end of power module after signal conversion unit, operational amplifier, field-effect tube, the vice-side winding of each isolating transformer respectively connects a signal dispensing loop, it is connected to outlet side filter inductance in every bars dispensing loop and filter capacitor is surveyed in output, the outlet side positive and negative terminal of each signal dispensing loop constitutes a shunting sign output port, and each signal dispensing loop is at parallel relationship.Device provided by the invention, especially suitable for handling Nuclear Power Plant Simulation amount signal.
Description
Technical field
The present invention relates to Electric signal processing technologies, more particularly to a kind of Nuclear Power Plant Simulation amount signal isolation distributor
Technology.
Background technique
In all kinds of power stations, it is often necessary to which single analog amount signal is output to multiple relevant devices, traditional analog quantity
Signal processing mode is that analog signals are carried out to electromagnetic isolation and divide multiple-channel output.
The power output unit and signal isolation input unit of existing analog signals isolation distributor are to be arranged in parallel
, signal is easy decaying, has the shortcomings that signal transmission distance is short and anti-electromagnetic interference capability is poor.
Summary of the invention
For above-mentioned defect existing in the prior art, technical problem to be solved by the invention is to provide a kind of signal biographies
Defeated distance is remote, and the Nuclear Power Plant Simulation amount signal isolation distributor that anti-electromagnetic interference capability is strong.
In order to solve the above-mentioned technical problem, a kind of Nuclear Power Plant Simulation amount signal isolation distributor provided by the present invention,
It is characterized by comprising signal conversion unit, operational amplifier, field-effect tube, power module and multiple isolating transformers；
The signal conversion unit includes prime filter circuit, the first filter circuit of rear class, the second filter circuit of rear class；
The input of the prime filter circuit terminates to analog signals source, and is terminated in the input of prime filter circuit
Data side fuse, the output of prime filter circuit are terminated with data side Transient Suppression Diode；
The input anode of first filter circuit of rear class is connect by diode with the output end of prime filter circuit, after
Grade the first filter circuit input negative terminal be connected with the input anode of the second filter circuit of rear class, the first filter circuit of rear class it is defeated
Outlet anode is coupled with the grid of field-effect tube, drain electrode, the negative pole of output end ground connection of the first filter circuit of rear class；
The input of second filter circuit of rear class is just terminating to the input negative terminal of the first filter circuit of rear class, rear class second
The input negative terminal of filter circuit is directly connected with the output negative terminal of prime filter circuit.The input anode of the second filter circuit of rear class
A transfer resistance in parallel, the output head anode of the second filter circuit of rear class connect between the input negative terminal of the second filter circuit of rear class
Negative pole of output end to the normal phase input end of operational amplifier, the second filter circuit of rear class is grounded；
The output end of the operational amplifier is coupled with the grid of field-effect tube, drain electrode, and the drain electrode of field-effect tube is through one
Slide rheostat is connected to the source electrode of itself, and the source electrode of field-effect tube is sequentially connected in series the primary side winding of each isolating transformer to power supply
The output end of module, each isolating transformer is connected to a zener diode between primary side winding both ends, and each isolation becomes
Depressor is respectively connected to an input side filter inductance at primary side winding both ends；
The vice-side winding of each isolating transformer respectively connects a signal dispensing loop, is connected to output in every bars dispensing loop
Side filter inductance and outlet side filter capacitor, the outlet side positive and negative terminal of each signal dispensing loop constitute a shunting sign output
Port.
Further, the power module includes rectifier bridge, power transformer；
The input terminal of the rectifier bridge is connected to external power supply through a source side fuse, and the output end of rectifier bridge is through a power supply
Side primary side filter circuit is connected to the primary side winding of power transformer, and is terminated with a source side transient state in the output of rectifier bridge and inhibits
Diode, the vice-side winding of power transformer connect a source side pair side filter circuit, the output of the source side pair side filter circuit
End constitutes the output end of power module.
The primary side of Nuclear Power Plant Simulation amount signal isolation distributor provided by the invention, each isolating transformer forms signal
Isolation input part, power module are connected with the primary side of each isolating transformer, so that the signal of isolation input side is not easy to decline
Subtract, relatively far away from, anti-electromagnetic interference capability is also relatively strong for signal transmission distance.
Detailed description of the invention
Fig. 1 is the circuit diagram of the Nuclear Power Plant Simulation amount signal isolation distributor of the embodiment of the present invention.
Specific embodiment
The embodiment of the present invention is described in further detail below in conjunction with Detailed description of the invention, but the present embodiment is not used to limit
The system present invention, it is all using similar structure and its similar variation of the invention, protection scope of the present invention should all be included in.
As shown in Figure 1, a kind of Nuclear Power Plant Simulation amount signal isolation distributor, feature provided by the embodiment of the present invention
Be: including signal conversion unit, operational amplifier N1, field-effect tube V13, power module U1 and four isolating transformer T1,
T2,T3,T4；
The signal conversion unit includes prime filter circuit, the first filter circuit of rear class, the second filter circuit of rear class,
In the first filter circuit of rear class for electric current export, the second filter circuit of rear class be used for voltage output；
The prime filter circuit is made of four filter capacitors C1, C2, C3, C4 and two filter resistances R1, R2, prime
Input terminal Sin+, Sin- of filter circuit are connected to analog signals source, and are terminated with overcurrent in the input of prime filter circuit
Data side fuse F1, F2, the output of prime filter circuit are terminated with overvoltage signal side Transient Suppression Diode V1, prime filter
The output end in wave circuit is equipped with current monitoring port x 1 and voltage monitoring port X2；
First filter circuit of rear class is made of four filter capacitors C5, C6, C7, C8 and two filter resistances R4, R5,
The input terminal of the first filter circuit of rear class is connected to the output end of prime filter circuit, the first filter circuit of rear class by diode V2
Output head anode I_OUT+ be coupled with field-effect tube V13 grid, drain electrode, the negative pole of output end of the first filter circuit of rear class
I_OUT- ground connection；
Second filter circuit of rear class is by four filter capacitors C9, C10, C11, C12 and two filter resistance R6, R7 groups
At the input terminal of the second filter circuit of rear class is connected to the output end of prime filter circuit, the rear class through a transfer resistance R3
The input anode of two filter circuits is connect with the input negative terminal (C6, C9 and R3 contact) of the first filter circuit of rear class, rear class second
(C9, V1's input negative terminal of filter circuit are connected with R3), the second filter circuit of rear class with the output negative terminal of prime filter circuit
Anode (C6, C9 with R3 contact) is inputted (to convert for one in parallel between C9, V1 and R3) with the input negative terminal of the second filter circuit of rear class
Resistance.The output head anode of the second filter circuit of rear class is connected to the normal phase input end of operational amplifier, the second filter circuit of rear class
Negative pole of output end ground connection.
The output head anode V_OUT+ of the second filter circuit of rear class is connected to the normal phase input end of operational amplifier N1, rear class
The negative pole of output end V_OUT- of two filter circuits is grounded, and operational amplifier N1 output end is connected to itself through a feedback diode V12
Inverting input terminal；
The output end of the operational amplifier N1 is coupled with the grid of field-effect tube V13, drain electrode, field-effect tube V13's
Drain electrode is connected to the source electrode of itself through a slide rheostat R11, and the source electrode of field-effect tube V13 is sequentially connected in series each isolating transformer
Output end of the primary side winding to power module；
Isolating transformer T1 is connected to a zener diode V8 between primary side winding both ends, and isolating transformer T1 is in primary side
Winding both ends are respectively connected to an input side filter inductance (L2, L4), and the vice-side winding of isolating transformer T1 connects a signal dispensing loop,
Outlet side filter inductance L3 and outlet side filter capacitor C20, the output of the signal dispensing loop are connected in the signal dispensing loop
Side positive and negative terminal Sout1+, Sout1- constitute first shunting sign output port；
Isolating transformer T2 is connected to a zener diode V9 between primary side winding both ends, and isolating transformer T2 is in primary side
Winding both ends are respectively connected to an input side filter inductance (L5, L7), and the vice-side winding of isolating transformer T2 connects a signal dispensing loop,
Outlet side filter inductance L6 and outlet side filter capacitor C21, the output of the signal dispensing loop are connected in the signal dispensing loop
Side positive and negative terminal Sout2+, Sout2- constitute second shunting sign output port；
Isolating transformer T3 is connected to a zener diode V10 between primary side winding both ends, and isolating transformer T3 is in original
Side winding both ends are respectively connected to an input side filter inductance (L8, L10), and the vice-side winding of isolating transformer T3 connects a signal and is allocated back to
Road, is connected to outlet side filter inductance L9 and outlet side filter capacitor C22 in the signal dispensing loop, the signal dispensing loop it is defeated
Side positive and negative terminal Sout3+, Sout3- constitutes third shunting sign output port out；
Isolating transformer T4 is connected to a zener diode V11 between primary side winding both ends, and isolating transformer T4 is in original
Side winding both ends are respectively connected to an input side filter inductance (L11, L13), and the vice-side winding of isolating transformer T4 connects signal distribution
Circuit is connected to outlet side filter inductance L12 and outlet side filter capacitor C23, the signal dispensing loop in the signal dispensing loop
Outlet side positive and negative terminal Sout4+, Sout4- constitute the 4th shunting sign output port.
In the embodiment of the present invention, the power module includes rectifier bridge, power transformer T5；
The rectifier bridge is made of four rectifier diodes V3, V4, V5, V6, and the input terminal of rectifier bridge is protected through a source side
Dangerous silk F3 is connected to 24V external power supply, and the source side that the output end of rectifier bridge is formed via filter resistance R9, filter capacitor C14 is former
Side filter circuit is connected to the primary side winding of power transformer T5, and is terminated with a source side transient state in the output of rectifier bridge and inhibits two
Pole pipe V7, the vice-side winding of power transformer T5 connect a source side pair side filter circuit, and the source side pair side filter circuit is by one
A filter resistance R10 and two filter capacitor C18, C19 compositions, the output end of source side pair side filter circuit constitute power module
Output end, source side fuse F3 plays over-voltage and overcurrent protection.
In other embodiments of the present invention, the quantity of the isolating transformer is also possible to two, three or four or more, institute
The other of identical function can be able to achieve using existing by stating each filter circuit in signal conversion unit and power module
Filter circuit substitutes, and the rectifier bridge in the power module can also be returned using the existing other rectifications for being able to achieve identical function
Road substitution.
The embodiment of the present invention is used to the single analog amount input signal of nuclear power station being converted to multi-analog output signal,
Its working principles are as follows:
The single analog amount input signal of nuclear power station is input to the primary side of each isolating transformer by signal conversion unit,
Realize that electromagnetic isolation keeps signal extensive to weed out the clutter generated in input signal by interference by each isolating transformer
Perfect condition is arrived again, and the regenerated signal on each isolating transformer pair side passes through the output of four bars dispensing loops, four letters respectively
Number dispensing loop is mutually indepedent, therein any when occurring short circuit or open circuit fault all the way, does not influence the normal fortune on other three tunnels
Row；
The zener diode V8-V11 of each isolating transformer primary side side acts the signal for being input to each isolating transformer
It is acted on to overvoltage protection, input side filter inductance L2, L4, L5, L7, L8, L10, L11, L13 of each isolating transformer primary side side
Inhibiting effect is played to high-frequency current clutter；
When in signal conversion unit, overcurrent, which is protected, to be realized to analog input signal by two data side fuse F1, F2
Shield realizes overvoltage protection to analog input signal by data side Transient Suppression Diode V1, analog input signal first by
Prime filter circuit carries out prime filtering, then exports after carrying out rear class filtering respectively by the first, second filter circuit of rear class, prime
The filter capacitor C5-C12 in four filter capacitors C1, C2, C3, C4 and the first, second filter circuit of rear class in filter circuit
The effect for inhibiting common mode and DM EMI, transfer resistance R3 and operational amplifier N1 are each served as being converted to current signal
Voltage signal, slide rheostat R11 are used for fine-adjusting current, voltage value, play compensation and role of correcting, field-effect tube V13 is used for
Drive each isolating transformer；
The embodiment of the present invention has high-isolating, multi output channel, high-precision signal, quick response, anti-interference ability
Strong feature, isolation voltage reaches 4KV AC, and power supply and signal input/output, signal input and signal output isolation, more
It is isolated between signal output channels, a channel inputs four channel outputs, analog signals precision≤± 2 ‰, can be applied to
In nuclear power station blind controller system, it is placed on outside containment in gentle environment.
Claims (1)
1. a kind of Nuclear Power Plant Simulation amount signal isolation distributor, it is characterised in that: including signal conversion unit, operation amplifier
Device, field-effect tube, power module and multiple isolating transformers；
The signal conversion unit includes prime filter circuit, the first filter circuit of rear class, the second filter circuit of rear class；
The input of the prime filter circuit terminates to analog signals source, and is terminated with signal in the input of prime filter circuit
Side fuse, the output of prime filter circuit are terminated with data side Transient Suppression Diode；
The input anode of first filter circuit of rear class is connect by diode with the output end of prime filter circuit, rear class the
The input negative terminal of one filter circuit is connected with the input anode of the second filter circuit of rear class, the output end of the first filter circuit of rear class
Anode is coupled with the grid of field-effect tube, drain electrode, the negative pole of output end ground connection of the first filter circuit of rear class；
The input of second filter circuit of rear class is just terminating to the input negative terminal of the first filter circuit of rear class, and rear class second filters
The input negative terminal in circuit is directly connected with the output negative terminal of prime filter circuit, and the input anode of the second filter circuit of rear class is with after
A transfer resistance in parallel, the output head anode of the second filter circuit of rear class are connected to fortune between the input negative terminal of the second filter circuit of grade
Calculate the normal phase input end of amplifier, the negative pole of output end ground connection of the second filter circuit of rear class；
The output end of the operational amplifier is coupled with the grid of field-effect tube, drain electrode, and the drain electrode of field-effect tube is through a sliding
Rheostat is connected to the source electrode of itself, and the source electrode of field-effect tube is sequentially connected in series the primary side winding of each isolating transformer to power module
Output end, each isolating transformer is connected to a zener diode, and each isolating transformer between primary side winding both ends
An input side filter inductance is respectively connected at primary side winding both ends；
The vice-side winding of each isolating transformer respectively connects a signal dispensing loop, and outlet side filter is connected in every bars dispensing loop
The outlet side positive and negative terminal of wave inductance and outlet side filter capacitor, each signal dispensing loop constitutes a shunting sign output end
Mouthful；
The power module includes rectifier bridge, power transformer；The input terminal of the rectifier bridge is connected to through a source side fuse
External power supply, the output end of rectifier bridge are connected to the primary side winding of power transformer through a source side primary side filter circuit, and whole
The output of stream bridge is terminated with a source side Transient Suppression Diode, and the vice-side winding of power transformer connects source side pair side filtering
Circuit, the output end of the source side pair side filter circuit constitute the output end of power module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410203810.7A CN103973295B (en) | 2014-05-15 | 2014-05-15 | A kind of Nuclear Power Plant Simulation amount signal isolation distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410203810.7A CN103973295B (en) | 2014-05-15 | 2014-05-15 | A kind of Nuclear Power Plant Simulation amount signal isolation distributor |
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| Publication Number | Publication Date |
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| CN103973295A CN103973295A (en) | 2014-08-06 |
| CN103973295B true CN103973295B (en) | 2019-01-04 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9537581B2 (en) * | 2014-06-30 | 2017-01-03 | Silicon Laboratories Inc. | Isolator including bi-directional regulator |
| CN108832714B (en) * | 2016-07-27 | 2024-07-02 | 国网江苏省电力公司常州供电公司 | An active distribution network intelligent terminal battery isolation monitoring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4103325A (en) * | 1977-03-18 | 1978-07-25 | Sperry Rand Corporation | Aircraft power and phase converter |
| CN1729611A (en) * | 2002-12-27 | 2006-02-01 | 索尼株式会社 | Switching power supply circuit |
| CN2852513Y (en) * | 2005-07-11 | 2006-12-27 | 中兴通讯股份有限公司 | Isolated switch power supply |
| CN102291010A (en) * | 2011-08-08 | 2011-12-21 | 山东蓝天电能科技有限公司 | Series bus type multi-DC output high voltage high frequency isolated power supply |
| CN203851129U (en) * | 2014-05-15 | 2014-09-24 | 国核自仪系统工程有限公司 | Nuclear power station analog quantity signal isolation and distribution device |
-
2014
- 2014-05-15 CN CN201410203810.7A patent/CN103973295B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4103325A (en) * | 1977-03-18 | 1978-07-25 | Sperry Rand Corporation | Aircraft power and phase converter |
| CN1729611A (en) * | 2002-12-27 | 2006-02-01 | 索尼株式会社 | Switching power supply circuit |
| CN2852513Y (en) * | 2005-07-11 | 2006-12-27 | 中兴通讯股份有限公司 | Isolated switch power supply |
| CN102291010A (en) * | 2011-08-08 | 2011-12-21 | 山东蓝天电能科技有限公司 | Series bus type multi-DC output high voltage high frequency isolated power supply |
| CN203851129U (en) * | 2014-05-15 | 2014-09-24 | 国核自仪系统工程有限公司 | Nuclear power station analog quantity signal isolation and distribution device |
Non-Patent Citations (1)
| Title |
|---|
| 电流控制型多路输出开关电源设计与实现;韩敏等;《航空计算技术》;20110531;第41卷(第3期);第89-92页 |
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| CN103973295A (en) | 2014-08-06 |
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Address after: 200241 No. 428 East Jiangchuan Road, Shanghai, Minhang District Patentee after: STATE NUCLEAR POWER AUTOMATION SYSTEM ENGINEERING Co.,Ltd. Address before: 200241. A2036, building B, building 555, Dongchuan Road, Minhang District, Shanghai Patentee before: STATE NUCLEAR POWER AUTOMATION SYSTEM ENGINEERING Co.,Ltd. |