CN103325620B - Relay malfunction preventing control circuit used for electricity information collecting terminal - Google Patents
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- CN103325620B CN103325620B CN201310227784.7A CN201310227784A CN103325620B CN 103325620 B CN103325620 B CN 103325620B CN 201310227784 A CN201310227784 A CN 201310227784A CN 103325620 B CN103325620 B CN 103325620B
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- 238000013461 design Methods 0.000 claims description 2
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Abstract
The invention discloses a relay malfunction preventing control circuit used for an electricity information collecting terminal. The relay malfunction preventing control circuit used for the electricity information collecting terminal is characterized by comprising a main control processor 1, a single-chip computer 2, a decoding subcircuit 3, an isolation subcircuit 4, a delay subcircuit 5, a power supply control subcircuit 6, a power supply detection subcircuit 7, an isolation subcircuit 8, an isolation subcircuit 9, a remote control subcircuit 10 and a relay execution unit 11. The relay malfunction preventing control circuit used for the electricity information collecting terminal has the advantages of greatly reducing relay malfunction probability and improving relay control product safety and reliability. Two important controlled quantities of a relay are respectively processed by the control circuit through a dual processor, electrical isolation is conducted on a main control processing part and an execution part, anti-interference performance is improved, product reliability is improved, and output safety is controlled. The relay malfunction preventing control circuit used for the electricity information collecting terminal greatly reduces relay malfunction probability.
Description
Technical field
What the present invention relates to is a kind of anti-relay misoperation control circuit for power information acquisition terminal, belongs to electronic circuit technology field.
Background technology
Electromagnetic type relay is generally made up of control coil, iron core, armature, contact reed etc., is mutually insulated between control coil and contact group, therefore, it is possible to play good electrical isolation effect for control circuit.When we to add the specified voltage of its coil at coil two of relay, certain electric current will be flow through in coil, thus generation galvanomagnetic effect, the pulling force that armature will overcome return spring under the effect of electromagnetic attracting force is inhaled to iron core, thus the moving contact of band moving armature and fixed contact (normally opened contact) adhesive.When after coil blackout, the suction of electromagnetism also disappears thereupon, and armature will return to original position at the reaction force of spring, makes moving contact and original fixed contact (normally-closed contact) adhesive.Such adhesive, release, thus the switch object reaching connection in circuit, cut-out.
At present, known electromagnetic relay control circuit applies constant voltage to coil one end, and the voltage of the control coil other end, to change the electrical potential difference at coil two ends, reach the object controlling the closing of contact.But the equipment of a lot of tape relay control circuit all requires to control to export to have high reliability and fail safe, and the circumstance complication run due to equipment is changeable, and interference characteristic is complicated, and randomness is higher.Therefore, traditional control relay circuit, if control end is interfered, is easy to cause relay misoperation to do, and can not ensure the safety and reliability controlling to export.
Summary of the invention
What the present invention proposed is a kind of anti-relay misoperation control circuit for power information acquisition terminal, its objective is easily to be disturbed to cause relay misoperation to make the low problem of safety and reliability to solve existing relay drive circuit.The invention provides the anti-relay misoperation control circuit for power information acquisition terminal, the safety and reliability that the control that this control circuit can improve equipment greatly exports.
Technical solution of the present invention: for the anti-relay misoperation control circuit of power information acquisition terminal, its structure comprises main control processor, single-chip microcomputer, decoding electronic circuit, the first separaant circuit, time delay electronic circuit, Energy control electronic circuit, power detecting electronic circuit, the second separaant circuit, the 3rd separaant circuit, remote control electronic circuit, relay performance element; wherein the signal input/output end of main control processor is corresponding with the signal input/output terminal of single-chip microcomputer connects, the signal output part of single-chip microcomputer connects with the signal input part of decoding electronic circuit, the signal input part of single-chip microcomputer connects with the signal output part of the second separaant circuit, the signal output part of decoding electronic circuit connects with the signal input part of the first separaant circuit, the signal output part of the first separaant circuit connects with the signal input part of time delay electronic circuit, the signal output part of time delay electronic circuit connects with the signal input part of Energy control electronic circuit, 1st signal output part of Energy control electronic circuit connects with the 1st signal input part of relay performance element, 2nd signal output part of Energy control electronic circuit connects with the signal input part of power detecting electronic circuit, the signal output part of power detecting electronic circuit connects with the signal input part of the second separaant circuit, the signal output part of main control processor connects with the signal input part of the 3rd separaant circuit, the signal output part of the 3rd separaant circuit connects with the signal input part of remote control electronic circuit, the signal output part of remote control electronic circuit connects with the 2nd signal input part controlling executive circuit.
Advantage of the present invention: propose a kind of anti-relay misoperation control circuit for power information acquisition terminal and implementation thereof, significantly reduce relay misoperation probability, improve the safety and reliability of Control product.This control circuit adopts dual processor to process two important controlled quentity controlled variables of relay respectively, and by master control processing section and execution part electrical isolation, enhances anti-interference, improve the reliability of product, control the fail safe exported.
Accompanying drawing explanation
Accompanying drawing 1 is the anti-relay misoperation control circuit composition frame chart for power information acquisition terminal.
Accompanying drawing 2 is decoding electronic circuit figure.
Accompanying drawing 3 is first separaant circuit diagrams.
Accompanying drawing 4 is time delay electronic circuit and Energy control electronic circuit figure.
Accompanying drawing 5 is the 3rd separaant circuit and remote control electronic circuit figure.
Accompanying drawing 6 is power detecting electronic circuit and the second separaant circuit diagram.
Embodiment
Contrast accompanying drawing 1, anti-relay misoperation control circuit, its structure comprises main control processor 1, single-chip microcomputer 2, decoding electronic circuit 3, separaant circuit 4, time delay electronic circuit 5, Energy control electronic circuit 6, power detecting electronic circuit 7, separaant circuit 8, separaant circuit 9, remote control electronic circuit 10, relay performance element 11; wherein the signal input/output end of main control processor 1 is corresponding with the signal input/output terminal of single-chip microcomputer 2 connects, the signal output part of single-chip microcomputer 2 connects with the signal input part of decoding electronic circuit 3, the signal input part of single-chip microcomputer 2 connects with the signal output part of separaant circuit 8, the signal output part of decoding electronic circuit 3 connects with the signal input part of separaant circuit 4, the signal output part of separaant circuit 4 connects with the signal input part of time delay electronic circuit 5, the signal output part of time delay electronic circuit 5 connects with the signal input part of Energy control electronic circuit 6,1st signal output part of Energy control electronic circuit 6 connects with the 1st signal input part of relay performance element 11,2nd signal output part of Energy control electronic circuit 6 connects with the signal input part of power detecting electronic circuit 7, the signal output part of power detecting electronic circuit 7 connects with the signal input part of separaant circuit 8, the signal output part of main control processor 1 connects with the signal input part of separaant circuit 9, the signal output part of separaant circuit 9 connects with the signal input part of remote control electronic circuit 10, the signal output part of remote control electronic circuit 10 connects with the 2nd signal input part controlling executive circuit 11.
Adopt ARM9G25 32 flush bonding processors, dominant frequency is 400MHz, the microcontroller of what single-chip microcomputer adopted is a 8 of NEC.What the communication modes of arm processor and single-chip microcomputer adopted is spi bus mode, overall minimum to the resource consumption of primary processor.Single-chip microcomputer 2 is connected by general IO with decoding electronic circuit 3.Decoding electronic circuit 3, separaant circuit 4, time delay electronic circuit 5, Energy control electronic circuit 6 are connected successively, and power detecting electronic circuit 7 outputs signal and feeds back to single-chip microcomputer through separaant circuit 8.After main control processor 1 receives the permission combined floodgate or trip signal that acquisition terminal main website issues, main control processor 1 is sent by spi bus and allows to open relay coil power supply message to single-chip microcomputer 2, single-chip microcomputer 2 receives from after main control processor order, parse 5 road signal YD1 ~ YD5 to input as decoding, a road signal YD(signal name is parsed again by decoding electronic circuit 3) as control signal, YD is converted into time delay electronic circuit 5 through light-coupled isolation electronic circuit 4 and inputs, logical time delay electronic circuit 5 exports triggering voltage control electronic circuit 6 and opens relay performance element 11 coil power, after power detecting electronic circuit 7 detects power supply opening, output feedback signal is to single-chip microcomputer 2, single-chip microcomputer 2 recording status changes, primary processor 1 reads this mode bit situation of change of single-chip microcomputer 2, and then send guidance command, by separaant circuit 9, remote control electronic circuit 10, relay performance element 11 completes trip operation.
Contrast accompanying drawing 2, decoding electronic circuit 3 adopts 74HC138 decoder D1, input combination translate a road and output signal by address and data, and as output signal YD1 ~ YD5=01001, YD=0, obvious to output signal YD be low level probability is 1/32.
Contrast accompanying drawing 3, separaant circuit 4 adopts optical coupler D2(model TLP785) realize, realize the complete saturation conduction of optocoupler by the value of build-out resistor R1 and resistance R2, ensure that optocoupler CTR is greater than 100.
Contrast Fig. 4, what described time delay electronic circuit 5 adopted is RC delay circuit, the delay time of design is 0.5 ~ 2S, delay time controls to be determined by resistance R4 and electric capacity C3, and during work, the voltage threshold utilizing the change in voltage at electric capacity C two ends in RC single order zero state response (discharge loop is by diode V2) and rearmounted voltage-stabiliser tube V3 to set compares, determine delay time, R4=10K, C3=100uF in this delay circuit, rearmounted voltage-stabiliser tube setting voltage 5.1V.Formula is utilized to extrapolate t=660ms.
Described Energy control electronic circuit 6, its structure comprises crystal diode V3, transistor V1, transistor V4, wherein the positive pole of crystal diode V3 connects the base stage of transistor V4, and the collector electrode energising resistance R5 of transistor V4 connects the base stage of transistor V1.During work, transistor 9012 and 8550 is utilized to realize, transistor V4 adopts grounded emitter type switching circuit, when after diode V3 reverse-conducting, trigger transistor V4 conducting, now transistor V1 is then equivalent to a base earth type switching circuit, changes triode V1 conducting minimum threshold by regulating resistance R3 and resistance R5, and after transistor V1 conducting, its collection radio pressure is less than 0.1V.
What Energy control electronic circuit 6 adopted is transistor switching circuit, by the presence or absence of interwoven crystal management and control relay power.When decoding exports effective, separaant circuit 4 D2 level is opened, and impels the voltage on C3 to raise (by RC circuit delay), when voltage is elevated to the voltage of rear end voltage stabilizing didoe V3 setting, transistor V4 opens, thus V1 is also opened, and such power control procedure just completes.
Contrast accompanying drawing 5, the structure of separaant circuit 9 and remote control electronic circuit 10 comprises optical coupler D3, transistor V7, diode V5, relay K 1, wherein optical coupler D3 connects the base stage of transistor V7, and diode V5 and relay K 1 are attempted by the collector electrode of transistor V7.
Separaant circuit 9 and remote control electronic circuit 10, by transistor switching circuit, the combination of isolation optocoupler, are controlled by primary processor as slave unit, and isolate with primary processor, ensure the safe operation of Main Processor Unit; Under normality, YK level is low level, and optical coupler D3 is in running order, and transistor V7 is in cut-off state, and relay coil two terminal potential is 0 current potential; When relay coil power supply YK_VDD opens, because transistor V7 ends, relay coil two ends still potential-free are poor, when remote control YK is effective, when being in high level, optical coupler D3 is in off position, and now transistor V7 is then in conducting state, there is electrical potential difference in relay two ends, performs trip operation.Diode V5 then to close a floodgate the impact of self-induction produced as absorbing relay tripping operation, protection relay.
Contrast accompanying drawing 6, power detecting electronic circuit 7 and separaant circuit 8, its structure is that transistor V8 is connected in series with optical coupler D4.Mate triode V8 turn-on threshold by resistance R15 and R11 dividing potential drop, R10 uses as current-limiting resistance.When after power supply opening, V8 conducting, optical coupler D4(separaant circuit 8) in running order, power detection signal CHECK then conjugates low level by high level, and single-chip microcomputer checks this I/O state, reads for primary processor.Utilize transistor switching circuit, analog signal is converted to discernible Transistor-Transistor Logic level signal, single-chip microcomputer 2 is sent to through separaant circuit 8, single-chip microcomputer 2 is by detecting the height state of level, main control processor confirms the situation of Energy control by the mode bit mark reading single-chip microcomputer setting, when after confirmation power supply opening, prepare next step remote control actions.
Claims (7)
1., for the anti-relay misoperation control circuit of power information acquisition terminal, it is characterized in that comprising main control processor (1), single-chip microcomputer (2), decoding electronic circuit (3), the first separaant circuit (4), time delay electronic circuit (5), Energy control electronic circuit (6), power detecting electronic circuit (7), the second separaant circuit (8), the 3rd separaant circuit (9), remote control electronic circuit (10), relay performance element (11); wherein the signal input/output end of main control processor (1) is corresponding with the signal input/output terminal of single-chip microcomputer (2) connects, the signal output part of single-chip microcomputer (2) connects with the signal input part of decoding electronic circuit (3), the signal input part of single-chip microcomputer (2) connects with the signal output part of the second separaant circuit (8), the signal output part of decoding electronic circuit (3) connects with the signal input part of the first separaant circuit (4), the signal output part of the first separaant circuit (4) connects with the signal input part of time delay electronic circuit (5), the signal output part of time delay electronic circuit (5) connects with the signal input part of Energy control electronic circuit (6), 1st signal output part of Energy control electronic circuit (6) connects with the 1st signal input part of relay performance element (11), 2nd signal output part of Energy control electronic circuit (6) connects with the signal input part of power detecting electronic circuit (7), the signal output part of power detecting electronic circuit (7) connects with the signal input part of the second separaant circuit (8), the signal output part of main control processor (1) connects with the signal input part of the 3rd separaant circuit (9), the signal output part of the 3rd separaant circuit (9) connects with the signal input part of remote control electronic circuit (10), the signal output part of remote control electronic circuit (10) connects with the 2nd signal input part of relay performance element (11).
2. the anti-relay misoperation control circuit for power information acquisition terminal according to claim 1, it is characterized in that described decoding electronic circuit (3) adopts 74HC138 decoder (D1), translate a road by address and data assemblies input to output signal, as input signal Y D1 ~ YD5=01001, YD=0, obviously output signal YD is low level probability is 1/32.
3. the anti-relay misoperation control circuit for power information acquisition terminal according to claim 1, it is characterized in that the first described separaant circuit (4) adopts the first optical coupler (D2) to realize, realize the complete saturation conduction of optocoupler by the value of mating the first resistance (R1) and the second resistance (R2), ensure that optocoupler CTR is greater than 100.
4. the anti-relay misoperation control circuit for power information acquisition terminal according to claim 1, what it is characterized in that described time delay electronic circuit (5) adopts is RC delay circuit, the delay time of design is 0.5 ~ 2S, delay time controls to be determined by the 4th resistance (R4) and the 3rd electric capacity (C3), during work, utilize the change in voltage at the 3rd electric capacity (C3) two ends in RC single order zero state response, the voltage threshold that discharge loop is set by the first voltage stabilizing didoe (V2) and rearmounted voltage-stabiliser tube compares, determine delay time, 4th resistance (R4)=10K Ω, 3rd electric capacity (C3)=100uF, rearmounted first voltage stabilizing didoe (V2) setting voltage 5.1V, utilize formula can extrapolate delay time t=660ms.
5. the anti-relay misoperation control circuit for power information acquisition terminal according to claim 1, it is characterized in that described Energy control electronic circuit (6), its structure comprises the second voltage stabilizing didoe (V3), first crystal triode (V1), the second transistor (V4), wherein the positive pole of the second voltage stabilizing didoe (V3) connects the base stage of the second transistor (V4), and the collector electrode of the second transistor (V4) connects the base stage of first crystal triode (V1) by the 5th resistance (R5), during work, the second transistor (V4) and first crystal triode (V1) is utilized to realize, second transistor (V4) adopts grounded emitter type switching circuit, when after the second voltage stabilizing didoe (V3) reverse-conducting, second triggers transistor (V4) conducting, now first crystal triode (V1) is then equivalent to a base earth type switching circuit, first crystal triode (V1) conducting minimum threshold is changed by regulating the 3rd resistance (R3) and the 5th resistance (R5), after first crystal triode (V1) conducting, its collection radio pressure is less than 0.1V.
6. the anti-relay misoperation control circuit for power information acquisition terminal according to claim 1, it is characterized in that the structure of the 3rd described separaant circuit (9) and remote control electronic circuit (10) comprises the second optical coupler (D3), the 3rd transistor (V7), the 3rd voltage stabilizing didoe (V5), relay (K1), wherein the second optical coupler (D3) connects the base stage of the 3rd transistor (V7), and the 3rd voltage stabilizing didoe (V5) and relay (K1) are attempted by the collector electrode of the 3rd transistor (V7).
7. the anti-relay misoperation control circuit for power information acquisition terminal according to claim 1, it is characterized in that described power detecting electronic circuit (7) and the first separaant circuit (4), its structure is that the 4th transistor (V8) is connected in series with the 3rd optical coupler (D4); During work, the 4th transistor (V8) turn-on threshold is mated by the 15 resistance (R15) and the 11 resistance (R11) dividing potential drop, tenth resistance (R10) uses as current-limiting resistance, when after power supply opening, and the 4th transistor (V8) conducting, 3rd optical coupler (D4) is in running order, CHECK then conjugates low level by high level, and single-chip microcomputer checks I/O state, reads for primary processor, after main control processor reading state, judge whether next step remote control performs.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310227784.7A CN103325620B (en) | 2013-06-08 | 2013-06-08 | Relay malfunction preventing control circuit used for electricity information collecting terminal |
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| CN201310227784.7A CN103325620B (en) | 2013-06-08 | 2013-06-08 | Relay malfunction preventing control circuit used for electricity information collecting terminal |
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| CN103325620B true CN103325620B (en) | 2015-07-22 |
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| CN110708051A (en) * | 2019-09-18 | 2020-01-17 | 安徽南瑞中天电力电子有限公司 | Switch control logic circuit |
| CN111580428B (en) * | 2020-04-29 | 2022-07-29 | 上海空间电源研究所 | Instruction sending circuit |
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| CN2482711Y (en) * | 2001-06-19 | 2002-03-20 | 华南师范大学 | Condition controller for intelligent instrument collective and distributive system |
| CN2641896Y (en) * | 2003-04-28 | 2004-09-15 | 上海协同科技股份有限公司 | False acting proof and action rejecting proof remote control circuit with redundant coding and self-checking feedback |
| CN203312165U (en) * | 2013-06-08 | 2013-11-27 | 南京新联电子股份有限公司 | Relay misoperation-prevention control circuit for electric information acquisition terminal |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE60228377D1 (en) * | 2001-10-09 | 2008-10-02 | Tokai Rika Co Ltd | Electronic vehicle theft protection |
| JP2010154640A (en) * | 2008-12-25 | 2010-07-08 | Daihatsu Motor Co Ltd | Contact malfunction diagnostic processing apparatus |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2482711Y (en) * | 2001-06-19 | 2002-03-20 | 华南师范大学 | Condition controller for intelligent instrument collective and distributive system |
| CN2641896Y (en) * | 2003-04-28 | 2004-09-15 | 上海协同科技股份有限公司 | False acting proof and action rejecting proof remote control circuit with redundant coding and self-checking feedback |
| CN203312165U (en) * | 2013-06-08 | 2013-11-27 | 南京新联电子股份有限公司 | Relay misoperation-prevention control circuit for electric information acquisition terminal |
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Effective date of registration: 20171220 Address after: 211111 Jiangning economic and Technological Development Zone, Jiangsu Province, home road, No. 28, No. Co-patentee after: China South Power Grid International Co.,Ltd. Patentee after: NANJING XINLIAN ELECTRONICS Co.,Ltd. Address before: 211100 Jiangning Province Economic and Technological Development Zone, Nanjing, Liyuan North Road, No. 66 Patentee before: NANJING XINLIAN ELECTRONICS Co.,Ltd. |
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