CN102377157A - Intelligent fire fighting electrical control device - Google Patents
Intelligent fire fighting electrical control device Download PDFInfo
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- CN102377157A CN102377157A CN2011103796029A CN201110379602A CN102377157A CN 102377157 A CN102377157 A CN 102377157A CN 2011103796029 A CN2011103796029 A CN 2011103796029A CN 201110379602 A CN201110379602 A CN 201110379602A CN 102377157 A CN102377157 A CN 102377157A
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Abstract
The invention discloses an intelligent fire fighting electrical control gear which comprises an air circuit breaker, a control gate circuit, a main control unit and an electric leakage prechecking protective circuit, wherein the electric leakage prechecking protective circuit is connected with the control gate circuit and the main control unit; the control gate circuit is connected with an opening/closing locked coil of the air circuit breaker; and the air circuit breaker is connected in a main three-phase power supply loop in series. The intelligent fire fighting electrical control device also comprises a temperature prechecking protective circuit, a default phase sampling circuit, a voltage sampling detection and over-voltage low-voltage protective circuit, an electric current sampling detection and overcurrent open-phase protective circuit, a short-circuiting protective circuit and a short-circuiting prechecking circuit. The intelligent fire fighting electrical control device has the characteristics of multifunction and intellectualization and is beneficial to ensuring the safe operation of electric equipment.
Description
Technical field
The present invention relates to the intelligent electric-controlled device of a kind of fire-fighting.
Background technology
Electric power and people's life is closely bound up, in life, is widely used.Electric power safety has influence on all trades and professions and social social stability, and life and commercial power are even more important.But often, make electricity become people " killer " of stealth at one's side because irrational the use and operation or circuit itself aging causes that line temperature causes situation such as electric leakage, short circuit unusually.Fire that electric power accident causes and casualty loss are huge often, and for these years, relevant departments and enterprise are absorbed in engineering electric power fire-fighting equipment, are intended to can take appropriate measures in time when accident takes place, and control spreading of electric power accident.At present relevant security protection equipment is only paid close attention in accident takes place or the safety precaution after taking place, but often before supply line's connection, hidden danger has just existed.Problems such as traditional electric power security protection equipment Live wires road or power consumption equipment are unusual with regard to the line temperature that exists before connecting, short circuit, electric leakage are unpredictable and solve that therefore, still there is great potential safety hazard in existing power security protection equipment.
Summary of the invention
Technical problem to be solved by this invention provides the intelligent electric-controlled device of a kind of fire-fighting, and the intelligent electric-controlled device of this fire-fighting has multi-functional and intelligentized characteristics, helps ensureing the power consumption equipment safe operation.
The technical solution of invention is following:
The intelligent electric-controlled device of a kind of fire-fighting; Comprise air circuit, control gate circuit, main control unit and electric leakage preliminary examination protective circuit; Described electric leakage preliminary examination protective circuit all is connected with main control unit with the control gate circuit; The control gate circuit links to each other with deciliter padlock coil of air circuit, and air circuit is serially connected in the three phase supply major loop.
Described control gate circuit is the drive circuit based on first d type flip flop;
Described electric leakage preliminary examination protective circuit comprises control transformer (KB1), three solid-state relays (SSR1-SSR3), instrument transformer (L0) and first operational amplifier (IC1 or IC3A); Arbitrary phase of the three phase mains of the former edge joint air circuit input side of control transformer; Through three solid-state relays and air circuit outlet side three of one end ground connection of control transformer secondary, the other end are single-phase to be connected respectively; Three solid-state relays are controlled by three outputs of main control unit respectively; Instrument transformer is arranged on the air circuit outlet side; Output warp first operational amplifier of instrument transformer is received the 1st input (SEL4) of 4 inputs and door, and the output of 4 inputs and door connects the input of first d type flip flop (IC6A) again.
The intelligent electric-controlled device of described fire-fighting also comprises the temperature preliminary examination protective circuit that is connected with main control unit; Temperature preliminary examination protective circuit comprises temperature sensor (MTS102), second operational amplifier and A/D converter; The signal output part of temperature sensor connects the input of second operational amplifier, and the output of second operational amplifier connects main control unit through A/D converter.[second operational amplifier also can be with 2 amplifier cascade replacements, like IC30A among Fig. 2 and IC30B cascade.】
The intelligent electric-controlled device of described fire-fighting comprises that also the phase shortage sample circuit, the voltage sample that are connected with main control unit detect and over-and under-voltage protective circuit and current sample detection and overcurrent, open-phase protection circuit and short-circuit protection circuit;
The phase shortage sample circuit comprise three resistance (R9 '; R10 '; R11 '), three bridge rectifiers and three optocouplers; Three single phase poaer supplies of air circuit input side connect the input of three optocouplers, the output termination main control unit of three optocouplers respectively through these 3 resistance and three bridge rectifiers;
Voltage sample detects and the over-and under-voltage protective circuit comprises voltage sample transformer, bridge rectifier and dividing potential drop branch road; Each of the former edge joint three phase mains of voltage sample transformer; The described dividing potential drop branch road of the output termination of voltage sample transformer; Dividing potential drop props up route second resistance (R50) and adjustable resistance (RW4) serial connection forms, and second resistance is connected with the input interface with A/D translation function (IN0) of main control unit with the tie point of adjustable resistance;
Current sample detection and overcurrent, open-phase protection circuit and short-circuit protection circuit comprise threephase current transformer (L1～L3), three groups of operational amplifiers and first d type flip flop; Threephase current transformer and three groups of operational amplifiers join, and the output of three groups of operational amplifiers connects three input interfaces (IN1-IN3) with A/D translation function of main control unit respectively; 3 outputs of three groups of operational amplifiers are also received other 3 inputs (SEL1-3) of 4 inputs and door respectively through 3 no feedback operational amplifiers (IC9A-C); The output of 4 inputs and door is received the input of first d type flip flop (IC6A) again, the first input end of the output termination of first d type flip flop (IC6A) and door (IC17A).
The intelligent electric-controlled device of described fire-fighting also comprises reset circuit, and reset circuit comprises 3d flip-flop (IC19A), button (S1), the 3rd resistance (R18) and electric capacity (C2); The positive pole of electric capacity (C2) connects dc power supply terminal (VCC) through the 3rd resistance (R18), the minus earth of electric capacity (C2); Button (S1) is parallelly connected with electric capacity (C2), and the positive pole of electric capacity (C2) connects the input of second d type flip flop (IC19A), second input of the output termination of second d type flip flop (IC19A) and door (IC17A).
The intelligent electric-controlled device of fire-fighting also comprises short circuit preliminary examination circuit, and short circuit preliminary examination circuit comprises:
3 relay coils that are controlled by main control unit: first coil (JHX-1), second coil (JHX-2) and tertiary coil (JHX-3);
2 groups of normally opened contacts that first coil (JHX-1) is attached: the 1st normally opened contact (JX-1-1) and the 2nd normally opened contact (JX-1-2); 2 groups of normally opened contacts that second coil (JHX-2) is attached: the 3rd normally opened contact (JX-2-1) and the 4th normally opened contact (JX-2-2); 2 groups of normally opened contacts that tertiary coil (JHX-3) is attached: the 5th normally opened contact (JX-3-1) and the 6th normally opened contact (JX-3-2);
3 adjustable resistances: first adjustable resistance (RW1), second adjustable resistance (RW2) and the 3rd adjustable resistance (RW3);
And 3 optocouplers; First optocoupler, second optocoupler and the 3rd optocoupler; Three optocouplers connect 3 detection signal inputs of main control unit respectively; [optocoupler also can connect main control unit through amplifier again]
The 1st normally opened contact (JX-1-1) termination DC power supply anode (VCC), the A phase of another termination load end (A ');
The B phase of the 2nd normally opened contact (JX-1-2) termination load end (B '), the other end connects the input of first optocoupler through first adjustable resistance (RW1);
The 3rd normally opened contact (JX-2-1) termination DC power supply anode (VCC), the B phase of another termination load end (B ');
The C phase of the 4th normally opened contact (JX-2-2) termination load end (C '), the other end connects the input of second optocoupler through second adjustable resistance (RW2);
The 5th normally opened contact (JX-3-1) termination DC power supply anode (VCC), the A phase of another termination load end (A ');
The C phase of the 6th normally opened contact (JX-3-2) termination load end (C '), the other end connects the input of the 3rd optocoupler through the 3rd adjustable resistance (RW3).
Main control unit is single-chip microcomputer or DSP, and DSP and single machine combination are perhaps arranged.
Beneficial effect:
The intelligent electric-controlled device of fire-fighting of the present invention; Owing to adopt electric leakage preliminary examination protective circuit, temperature preliminary examination protective circuit, phase shortage sample circuit, voltage sample to detect and over-and under-voltage protective circuit and current sample detection and measures such as overcurrent, open-phase protection circuit and short-circuit protection circuit and short circuit preliminary examination circuit; Can prevent as much as possible that electric power accident from will take precautions against in possible trouble; Change traditional switch and do not have the present situation of intelligent preliminary examination; Make switch before closing a floodgate, just can detect the problem that circuit exists, take operations such as warning or restriction combined floodgate simultaneously, fundamentally controlled the generation of electric power accident to a certain extent.This also is that present electric power security protection equipment is wanted improved place.
The intelligent electric-controlled device of fire-fighting of the present invention also is provided with fault padlock circuit, and preliminary examination has faults such as circuit temperature anomaly, electric leakage, short circuit before switch closes a floodgate, and can close a floodgate after only fixing a breakdown, and this has just significantly reduced the generation of electric power accident.
The present invention compared with prior art has following advantage:
1, the mechanical switch of this intelligence isolated plant (being the intelligent electric-controlled device of fire-fighting) abandoning tradition makes switch intelligent, controlledization.Through preliminary examination functions such as line temperature, electric leakage, short circuits, be implemented in fault elimination before takes place, protect engineering and personal safety conscientiously.
2, the intelligent electric-controlled device of fire-fighting is connected with host computer, can realize long-range human-computer interactive control.Device is implemented in the connection of host computer through communication line or IP network, realizes the real-time monitoring of circuit, makes people can detect the real-time change of circuit electric weight at any time, and is great for failure diagnosis and control Significance.
3, the intelligent electric-controlled device of fire-fighting can also be introduced fire-fighting couplet control function simultaneously.Join the switching value input closure of control when corresponding fire-fighting after, the tripping operation of threading off automatically of time-delay 0.5s device.
Description of drawings
Fig. 1 is an intelligent fire integrated electric device electrical principle block diagram;
Fig. 2 is a temperature preliminary examination protective circuit;
Fig. 3 is electric leakage sampling preliminary examination protective circuit figure (Fig. 3-1 and Fig. 3-2 is subgraph)
Fig. 4-the 1st, phase shortage sample circuit figure;
Fig. 4-the 2nd, load end short circuit preliminary examination circuit diagram;
Fig. 4-3 is the output signal aggregation process circuit diagram of phase shortage sample circuit and load end short circuit preliminary examination circuit;
Fig. 5 is the schematic diagram (Fig. 5-1～Fig. 5-3 is 3 sub-graphs) of current sample, voltage sample and protective circuit.
Embodiment
Below will combine accompanying drawing and specific embodiment that the present invention is explained further details:
Embodiment 1:
Fig. 1 is the anti-integrated electric device electrical principle block diagram that disappears of intelligence.Air switch (being air circuit) is serially connected in the major loop, and control loop comprises that preliminary examination unit such as unique two-dimension temperature preliminary examination, electric leakage preliminary examination, short circuit preliminary examination constitute the preliminary examination loop.The dsp main control unit is controlled its combined floodgate, disconnection and fault and is threaded off through the air switch of control gate circuit control major loop.Intelligent control unit is by voltage sampling circuit, excess voltage protection, current sampling circuit, overcurrent, open-phase protection circuit, temperature, electric leakage, short circuit preliminary examination protective circuit, A/D change-over circuit, fault padlock circuit; Divide, close circuit; Reset circuit; The parameter tuning circuit, warning, display circuit and human-computer interaction interface are formed.Relevant sample circuit connects the load end three-phase line, links to each other in the dsp control unit through A/D conversion short circuit simultaneously.On basic electrical diagram, device has also incorporated fire protection linkage control function and RS485, TCP/IP communication function.
The function of temperature preliminary examination protective circuit is before air switch closes a floodgate, and the circuit of three-phase load circuit is carried out distributed temperature detect, and changes through detected temperatures; Judge whether to have fault and take place, as it is unusual to detect variations in temperature, then device automatically locks; Make that promptly device is in off-state; Simultaneously on human-computer interaction interface, demonstrate the fault content, the concurrent alarm of being out of order, combined floodgate can reset after fault is got rid of.
The physical circuit of intelligent fire integrated apparatus is formed as follows: the dsp main control unit is single-chip microcomputer IC13, and it is the core devices of Based Intelligent Control protective circuit, and IC17A, IC16 connect formation control gate circuit, and IC16A, IC19A connect and form lock-in circuit.Interface button connects the Pin10～Pin14 of dsp and No. 1 pin of IC24; Be respectively button AN1～AN6; Its function is " closing ", " branch ", " setting ", "-", "+", " resetting "; Can realize size of current through relevant button to device, voltage swing, parameters such as time-delay are regulated.SR connects with 1 pin of IC24, is connected with 9 pin of IC13 through 7 pin.
Two-dimension temperature preliminary examination protective circuit is referring to Fig. 2, and the MTS102 thermo-sensitive resistor can change resistance according to variation of temperature, when being checked through variations in temperature; Its resistance sizes changes, and amplifies through the one-level of amplifier IC30A, with the signal amplification of input; Then signal is transferred to "+" level of IC30B,, reduce to collect the distortion factor of signal through the filter action of computing circuit; The output of IC30B reaches the AT single-chip microcomputer with digital signal then through the A/D change-over circuit that R63 connects control circuit.According to the safe temperature boundary value of line related, when temperature generation ANOMALOUS VARIATIONS, promptly the line temperature programming rate surpasses the normal value of set point or reaches the setting safety value simultaneously; IC13 respective pins output signal; Control octuple edge triggers, D flip-flop IC15, makes to get into the fault emergency rating by the CM1 circuit breaker tripping; While display displays temperature abnormal failure, and warning circuit gives the alarm.
Voltage sample detection and overvoltage, under-voltage, protective circuit; Referring to Fig. 5; Secondary, bridge rectifier D29-D32, RW4, R50, C10, DW3 by the voltage sample transformer connect and form; Be connected to 26 pin of the control chip IC28 (annotate: mainly is to be convenient to explanation to its pin with IC28 as chip) of the LCDs of A/D change-over circuit then, accomplish the sampling of voltage data between circuit.
Current sample detection and overcurrent, open-phase protection circuit and short-circuit protection circuit referring to Fig. 5, are made up of threephase current transformer, diode D16-D28, voltage-stabiliser tube DW1-DW3, amplifier IC9, IC10, IC22, IC29, d type flip flop IC11A connection.L1, L2, L3 is elementary is three-phase power line, and current sample detection and overcurrent, open-phase protection circuit divide two-way output: the one tunnel exports 27,28 and 1 pin of control chip IC28 of the LCDs of A/D change-over circuit to, constitutes overcurrent, open-phase protection circuit; The 6 pin output of another route d type flip flop IC11A is connected to 1 pin of lock-in circuit IC17A, constitutes short-circuit protection circuit.The time of in circuit, adopting d type flip flop that input is disturbed shortens greatly, receives to disturb to reduce.3 voltage output ends (are three outputs of IC9; Be the SEL1-3 among Fig. 5-2) and Fig. 3-2 in the output (SEL4) of IC3A connect 4 inputs (seeing Fig. 3-2) of 4 inputs and door respectively; The output of 4 inputs and door is received the input (seeing Fig. 3-2) of d type flip flop (IC6A); As long as be in order to ensure there being one to be 0, output is exactly definite value (definite value is 0).
Phase shortage sampling protective circuit is referring to Fig. 4-1, and by the 1-14 pin of controllable LMDS Light Coupled Device IC1, R5 '-R11 ', D4-D8, IC8 constitute.For the A phase, just often, the A phase current is connected to 3,4 pins of IC1 through R11 ' and bridge rectifier electricity; 14 pin output impulse wave at IC1; If lack the A phase, then IC1 is output as " 1 ", and [ic8 is in Fig. 4-3 through IC8 [LM339 voltage comparator chip internal is equipped with four independently voltage comparators].] deliver to dsp control core, it sends instruction makes IC17A [IC17 is three inputs and door] be output as " 0 ", IC15 [74HC273; 8 curbs trigger; D type flip flop] end, circuit breaker tripping maybe can not close a floodgate, and display shows " phase shortage A " simultaneously; Corresponding indicator light is bright, and warning circuit gives the alarm.When B, C phase shortage, principle is identical.D1, D2, D3 are three diodes, when short circuit, arrange in pairs or groups according to different situations.L4 connects No. 2 pins of neutral line N and IC1, guarantees the inner No. 1 optocoupler operate as normal of IC1.
Short circuit preliminary examination circuit is referring to Fig. 4-2; By Vcc, signal relay JX-1～JX-3 (its line connection control effect in device), R12～R17, RW1～RW3, LMDS Light Coupled Device IC2, operational amplifier IC7 (Fig. 4-2 below IC7A/B/C is arranged; Simultaneously operational amplifier IC7 amplifies the signal of short circuit preliminary examination), operational amplifier IC8 connects formation; IC8 is connected with dsp, and VCC links to each other with A ', B ', the C ' of threephase load end through the normally opened contact of JX-1, JX-2, JX-3 respectively.When after the control section energising, device gets into the preliminary examination state, and JX-1～JX-3 coil gets electric, and normally opened contact is closed; When load did not have short circuit, 16 pin of IC2 were output as " 1 ", when having short circuit; Like A ', B ' short circuit, then short circuit current is by 1 pin → ground of another normally opened contact → RW1 → IC2 of normally opened contact 7 → A ' → B ' → JX-1 of Vcc → JX-1, and then 16 pin of IC2 are exported " 1 " → " 0 "; Make IC15 [74HC273,8 curbs trigger, d type flip flop] end; Display shows " short circuit AB " simultaneously, and the circuit for alarming startup gives the alarm.The resistance of RW1 is adjusted to 3 Ω and gets final product in reality.
With A is example mutually, and when A was short-circuited mutually, IC2 changed with the A1 input that A is connected mutually, and the effect of No. 1 optocoupler that process is inner causes the C1 signal of IC2 output to change.
When three-phase circuit load end C ' and A ' are short-circuited, set this moment JX-3 get electric, other JX-1 and JX-2 dead electricity; Then short circuit current is by A3 pin → ground of Vcc → JX-3-1 normally opened contact → A ' → C ' → JX-3-2 normally opened contact → RW3 → IC2, and 11 pin of IC2 output " 1 " → " 0 " then makes IC15 [74HC273; 8 curbs trigger; D type flip flop] end, display shows that " short circuit C ' A ', the circuit for alarming startup gives the alarm simultaneously.The resistance of RW1 is adjusted to 3 Ω and gets final product in reality.
In like manner; Judge whether short circuit of B ' C '; As long as setting JX-2 gets; Other JX-1 and JX-3 dead electricity, short circuit current be by A2 pin → ground of Vcc → JX-2-1 normally opened contact → B ' → C ' → JX-2-2 normally opened contact → RW2 → IC2, and the state that detects the corresponding output of A2 pin again can be differentiated whether short circuit.
Electric leakage sampling preliminary examination protective circuit referring to Fig. 3, is made up of control transformer KB1, solid-state relay SSR1～SSR3, DC power supply VCC, resistance R 1～R10, L0, D0, IC1～IC5 connection.When device gets into the preliminary examination state, single-chip microcomputer send instruction make SSR1～SSR3 coil successively electric, its corresponding normally opened contact is closure successively; The KB1 secondary rolling thread inserts load end A ', B ', C ' three-phase successively; Reach set point like the load end Leaked Current of Line to Ground, instrument transformer L0 through R7, amplifier IC1 then through amplifier IC3 and with the processing of door chip IC 17A after deliver to IC16 [74HC273,8 curbs trigger; D type flip flop]; IC16 output " 1 " makes IC15 (IC15 mainly is a control circuit breaker when breaking down, and uses in the main tangible governor circuit of IC16) end the locking of CM1 circuit breaker tripping.Display shows leak current fault, alarm equipment alarm simultaneously.
Fault padlock circuit referring to Fig. 3, connects by DC power supply VCC, with a door chip IC 17A, d type flip flop IC6A, d type flip flop IC19A, button S1, resistance R 18, capacitor C 2 and to constitute.When fault took place, IC6A or IC19A4 pin became 0 by 1 among the figure, and its output also becomes 0 by 1, makes that IC17A is sealed up a door, and is output as 0, and device is locked, and can not close a floodgate, and before fault was got rid of, combined floodgate can not reset.Have only after fault is got rid of, press the S1 button, make 0 level be input to the CLR end of IC6A or IC17A, its output becomes 1 by 0, and IC17A is opened, can operate as normal.FLAG is input as 1 when operate as normal, makes 12 pin of IC17A export only by 1, the input of 2 pin is relevant.
In the device governor circuit, reset circuit, warning circuit, display circuit etc. have also been added.Reset circuit is made up of IC24, AN6, D25, resistance R 47, R48 connection; Warning circuit is made up of frequency divider IC32, IC17B, inverter (realizing with amplifier) IC7D, buzzer FM, R64, and the CLK of frequency divider is connected with dsp control core; Display circuit is made up of inverter ic 25, IC23, R61, R57 connection, and display shows relevant information according to the instruction of dsp.(these are not the major part of product patent, do not have special circuit diagram in this patent, need not explanation)
Each chip symbol and model contrast as follows:
IC1、IC2 TLP521-4
IC3 74HC244
IC4 74HC06
IC5、、IC7、IC9 LM324
IC6,19 is a d type flip flop.
[LM339 voltage comparator chip internal is equipped with four independently to IC8 LM339
Voltage comparator]
IC10 74HC74
IC11 ADC0809
IC12 74HC14
IC13 AT89C52
IC14 74HC573
IC15、IC16 74HC273
IC17 74HC11
IC18 HC2003
IC20、21 JGX-16F
IC22 MAX813L
IC23 24C04
IC24 74HC32
IC25 74HC08
IC27 74HC138
IC28 VCM128*64
IC29 74HC4040
IC30 LM358
Advantage of the present invention is that Based Intelligent Control protected location and the air circuit before combined floodgate, loaded line temperature sampling preliminary examination circuit and electric leakage, short circuit preliminary examination protective circuit and dsp and control gate circuit formed combine; Constituted the intelligent anti-integrated apparatus that disappears; On the short circuit of routine, phase shortage, overvoltage, protective circuit basis such as under-voltage, unique temperature preliminary examination protective circuit, electric leakage preliminary examination protective circuit, short circuit preliminary examination protective circuit make the anti-performance that disappears of device improve greatly.Device has added technology such as perfect display circuit, warning circuit, fault locking, man-machine interaction Long-distance Control simultaneously, makes device hommization more, facilitation.Therefore the present invention's intelligence anti-ly disappear that integrated apparatus is multiple functional, superior performance, fault detect accurately, cut off rapidly, safe and reliable, can significantly reduce electric disaster hidden-troubles such as electric electric leakage, short circuit to a certain extent.
Claims (6)
1. intelligent electric-controlled device of fire-fighting; It is characterized in that; Comprise air circuit, control gate circuit, main control unit and electric leakage preliminary examination protective circuit; Described electric leakage preliminary examination protective circuit all is connected with main control unit with the control gate circuit, and the control gate circuit links to each other with deciliter padlock coil of air circuit, and air circuit is serially connected in the three phase supply major loop.
2. the intelligent electric-controlled device of fire-fighting according to claim 1 is characterized in that described control gate circuit is the drive circuit based on first d type flip flop;
Described electric leakage preliminary examination protective circuit comprises control transformer (KB1), three solid-state relays (SSR1-SSR3), instrument transformer (L0) and first operational amplifier (IC1 or IC3A); Arbitrary phase of the three phase mains of the former edge joint air circuit input side of control transformer; Through three solid-state relays and air circuit outlet side three of one end ground connection of control transformer secondary, the other end are single-phase to be connected respectively; Three solid-state relays are controlled by three outputs of main control unit respectively; Instrument transformer is arranged on the air circuit outlet side; Output warp first operational amplifier of instrument transformer is received the 1st input (SEL4) of 4 inputs and door, and the output of 4 inputs and door connects the input of first d type flip flop (IC6A) again.
3. the intelligent electric-controlled device of fire-fighting according to claim 2; It is characterized in that; Also comprise the temperature preliminary examination protective circuit that is connected with main control unit; Temperature preliminary examination protective circuit comprises temperature sensor (MTS102), second operational amplifier and A/D converter, and the signal output part of temperature sensor connects the input of second operational amplifier, and the output of second operational amplifier connects main control unit through A/D converter.
4. the intelligent electric-controlled device of fire-fighting according to claim 3; It is characterized in that, comprise that also the phase shortage sample circuit, the voltage sample that are connected with main control unit detect and over-and under-voltage protective circuit and current sample detection and overcurrent, open-phase protection circuit and short-circuit protection circuit;
The phase shortage sample circuit comprise three resistance (R9 '; R10 '; R11 '), three bridge rectifiers and three optocouplers; Three single phase poaer supplies of air circuit input side connect the input of three optocouplers, the output termination main control unit of three optocouplers respectively through these 3 resistance and three bridge rectifiers;
Voltage sample detects and the over-and under-voltage protective circuit comprises voltage sample transformer, bridge rectifier and dividing potential drop branch road; Each of the former edge joint three phase mains of voltage sample transformer; The described dividing potential drop branch road of the output termination of voltage sample transformer; Dividing potential drop props up route second resistance (R50) and adjustable resistance (RW4) serial connection forms, and second resistance is connected with the input interface with A/D translation function (IN0) of main control unit with the tie point of adjustable resistance;
Current sample detection and overcurrent, open-phase protection circuit and short-circuit protection circuit comprise threephase current transformer (L1～L3), three groups of operational amplifiers and first d type flip flop; Threephase current transformer and three groups of operational amplifiers join, and the output of three groups of operational amplifiers connects three input interfaces (IN1-IN3) with A/D translation function of main control unit respectively; 3 outputs of three groups of operational amplifiers are also received other 3 inputs (SEL1-3) of 4 inputs and door respectively through 3 no feedback operational amplifiers (IC9A-C); The output of 4 inputs and door is received the input of first d type flip flop (IC6A) again, the first input end of the output termination of first d type flip flop (IC6A) and door (IC17A).
5. the intelligent electric-controlled device of fire-fighting according to claim 4 is characterized in that, comprises that also reset circuit, reset circuit comprise 3d flip-flop (IC19A), button (S1), the 3rd resistance (R18) and electric capacity (C2); The positive pole of electric capacity (C2) connects dc power supply terminal (VCC) through the 3rd resistance (R18), the minus earth of electric capacity (C2); Button (S1) is parallelly connected with electric capacity (C2), and the positive pole of electric capacity (C2) connects the input of second d type flip flop (IC19A), second input of the output termination of second d type flip flop (IC19A) and door (IC17A).
6. the intelligent electric-controlled device of fire-fighting according to claim 5 is characterized in that, also comprises short circuit preliminary examination circuit, and short circuit preliminary examination circuit comprises:
3 relay coils that are controlled by main control unit: first coil (JHX-1), second coil (JHX-2) and tertiary coil (JHX-3);
2 groups of normally opened contacts that first coil (JHX-1) is attached: the 1st normally opened contact (JX-1-1) and the 2nd normally opened contact (JX-1-2); 2 groups of normally opened contacts that second coil (JHX-2) is attached: the 3rd normally opened contact (JX-2-1) and the 4th normally opened contact (JX-2-2); 2 groups of normally opened contacts that tertiary coil (JHX-3) is attached: the 5th normally opened contact (JX-3-1) and the 6th normally opened contact (JX-3-2);
3 adjustable resistances: first adjustable resistance (RW1), second adjustable resistance (RW2) and the 3rd adjustable resistance (RW3);
And 3 optocouplers; First optocoupler, second optocoupler and the 3rd optocoupler; Three optocouplers connect 3 detection signal inputs of main control unit respectively;
The 1st normally opened contact (JX-1-1) termination DC power supply anode (VCC), the A phase of another termination load end (A ');
The B phase of the 2nd normally opened contact (JX-1-2) termination load end (B '), the other end connects the input of first optocoupler through first adjustable resistance (RW1);
The 3rd normally opened contact (JX-2-1) termination DC power supply anode (VCC), the B phase of another termination load end (B ');
The C phase of the 4th normally opened contact (JX-2-2) termination load end (C '), the other end connects the input of second optocoupler through second adjustable resistance (RW2);
The 5th normally opened contact (JX-3-1) termination DC power supply anode (VCC), the A phase of another termination load end (A '); The C phase of the 6th normally opened contact (JX-3-2) termination load end (C '), the other end connects the input of the 3rd optocoupler through the 3rd adjustable resistance (RW3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103796029A CN102377157A (en) | 2011-11-25 | 2011-11-25 | Intelligent fire fighting electrical control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103796029A CN102377157A (en) | 2011-11-25 | 2011-11-25 | Intelligent fire fighting electrical control device |
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| CN102377157A true CN102377157A (en) | 2012-03-14 |
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|---|---|---|---|
| CN2011103796029A Pending CN102377157A (en) | 2011-11-25 | 2011-11-25 | Intelligent fire fighting electrical control device |
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Cited By (5)
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| CN102882189A (en) * | 2012-09-22 | 2013-01-16 | 天津中电华利电器科技集团有限公司 | Intelligent controller for circuit breaker |
| CN107742875A (en) * | 2017-11-21 | 2018-02-27 | 江苏创能电器有限公司 | A kind of breaker |
| CN109787044A (en) * | 2019-04-02 | 2019-05-21 | 佛山市顺德区信辉达电子有限公司 | Three pole on-off leakage protecting plug of semi-intelligent |
| CN110336252A (en) * | 2019-08-16 | 2019-10-15 | 深圳市智微智能软件开发有限公司 | Space solid state distribution protects circuit, method and power supply-distribution system |
| CN113917363A (en) * | 2021-09-29 | 2022-01-11 | 浙江大华技术股份有限公司 | Short circuit detection circuit, short circuit detection method and intelligent air switch |
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| CN1744405A (en) * | 2005-09-16 | 2006-03-08 | 广东珠江开关有限公司 | Intelligent self-learning motor protective circuit breaker |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102882189A (en) * | 2012-09-22 | 2013-01-16 | 天津中电华利电器科技集团有限公司 | Intelligent controller for circuit breaker |
| CN107742875A (en) * | 2017-11-21 | 2018-02-27 | 江苏创能电器有限公司 | A kind of breaker |
| CN109787044A (en) * | 2019-04-02 | 2019-05-21 | 佛山市顺德区信辉达电子有限公司 | Three pole on-off leakage protecting plug of semi-intelligent |
| CN109787044B (en) * | 2019-04-02 | 2023-09-22 | 佛山市顺德区信辉达电子有限公司 | Semi-intelligent tripolar on-off leakage protection plug |
| CN110336252A (en) * | 2019-08-16 | 2019-10-15 | 深圳市智微智能软件开发有限公司 | Space solid state distribution protects circuit, method and power supply-distribution system |
| CN113917363A (en) * | 2021-09-29 | 2022-01-11 | 浙江大华技术股份有限公司 | Short circuit detection circuit, short circuit detection method and intelligent air switch |
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Application publication date: 20120314 |