CN103633860A - Adaptive control system and control method of anti-interference electricity device - Google Patents
Adaptive control system and control method of anti-interference electricity device Download PDFInfo
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Abstract
The invention relates to an adaptive control system and a control method of an anti-interference electricity device. The system comprises an alternating current power source, a measuring circuit, a central control unit, an alternating current-direct current change-over circuit, an alternating current-direct current switching circuit, a current cutoff circuit and a direct current voltage automatic changing circuit, wherein the alternating current power source is used for providing alternating current voltage; the measuring circuit is used for measuring the voltage and current of the alternating current power source and feeding the voltage and the current back to the central control unit; the alternating current-direct current change-over circuit is used for converting alternating current provided by the alternating current power source into direct current, and feeding the stored direct current voltage signal back to the central control unit; the alternating current-direct current change-over circuit provides the direct current voltage for a contactor by the direct current voltage automatic changing circuit; the central control unit controls the alternating current-direct current switching circuit to select a power supply system of the contactor according to the alternating voltage and the direct current voltage; the current cutoff circuit is arranged between the alternating power source and the contactor; when the power supply system of the contactor is switched from an alternating current system to a direct current system, the central control unit controls the current cutoff circuit to cut off the current of the alternating current power source.
Description
Technical field
The present invention relates to a kind of anti-shake electric installation adaptive control system and control method thereof.
Background technology
At present, conventional anti-shake electric installation as shown in Figure 1, the measuring circuit of utilizing Current Transmit and voltage transformer VT to form is measured the voltage U ac in AC system and electric current I ac, after AC system generation voltage falls, micro-control unit MCU detects voltage and falls (being the voltage U ac that measures of measuring circuit and the variation of electric current I ac), make relay J 0 electric, two normally-closed contact J0-1 and the J0-2 of relay J 0 are switched in direct current system, and contactor KM is kept.Particularly, direct current system is introduced 220V alternating voltage from AC system, utilize AC/DC that AC voltage conversion is become to direct voltage, by a heavy-duty diode D0, realize step-down, voltage after reduction is converted to the driving voltage that is applicable to described micro-control unit MCU by voltage changer LDO, be described micro-control unit MCU power supply; Simultaneously, voltage after reduction accesses the two ends of a capacitor C, and by monitoring voltage, the voltage VE at capacitor C two ends is measured, and this measuring-signal is sent in micro-control unit MCU, when this signal (voltage VE) reaches predetermined value, illustrate that capacitor C charging is complete, can carry out direct current supply for contactor KM.After switching to direct current supply, except needing the voltage transformation of DC/DC, also need by any two outside terminals in short circuit JP-1, JP-2, JP-3, JP-4, JP-N, the direct voltage size of output to be regulated, specifically which two terminal in JP-1 to JP-N being carried out to short circuit is that user selects by empirical value according to the capacity of contactor KM, the pressure drop that each diode (D1, D2, D3, D4, D5) brings is approximately between 0.7～1V, therefore the voltage, externally providing is several large extreme difference voltages.
In aforesaid way, must come short circuit outside terminal (JP-1 to JP-N) to control output voltage according to the capacity of selected contactor KM, and output voltage size fixes, can not be adjustable continuously, therefore can not be well and contactor KM match.User is after having changed contactor KM, must reselect the outside terminal (JP-1 to JP-N) of short circuit, make output voltage adapt to different contactor KM, give and produce, install, debug and brought inconvenience, because empirical value may not be accurate, there is the artificial possibility of adjusting error, while existing follow-up appearance to shake electricity, can not reliably keep in touch the hidden danger of device KM, and then cause economic loss.
Summary of the invention
The invention provides a kind of anti-shake electric installation adaptive control system and control method thereof, to solve the problems referred to above of existing anti-shake electric installation.
For solving the problems of the technologies described above, the invention provides anti-shake electric installation adaptive control system, comprise AC power, measuring circuit, central control unit and ac-dc converter circuit, also comprise alternating current-direct current commutation circuit, failure of current circuit and direct voltage auto-changing circuit, wherein
Described AC power provides alternating voltage for contactor;
Described measuring circuit is measured the voltage and current signal of AC power, and feeds back to described central control unit;
The alternating current that described ac-dc converter circuit provides described AC power is converted to direct current, and the d. c. voltage signal of storage is fed back to described central control unit;
Described ac-dc converter circuit provides direct voltage by described direct voltage auto-changing circuit for contactor;
Described central control unit controls according to described alternating voltage and d. c. voltage signal the electric power system that described alternating current-direct current commutation circuit is selected described contactor;
Described failure of current circuit is arranged between described AC power and contactor, and when the electric power system of described contactor switches to direct current system from AC system, described central control unit is controlled the electric current of described failure of current circuitry cuts AC power.
Preferably, described failure of current circuit comprises the first relay, bridge rectifier, the first resistance and the first transistor, the normally-closed contact of described the first relay is series between AC power and contactor, and the pin relative with a group of described bridge rectifier is in parallel, another of described bridge rectifier organize relative pin be parallel to described the first transistor source electrode and drain electrode between, and in parallel with described the first resistance, the grid of described the first transistor is connected with described central control unit.
Preferably, described alternating current-direct current commutation circuit comprises the second relay, linear optical coupling, Hall element and voltage comparator, described direct voltage compares in described voltage comparator by the d. c. voltage signal storing in described linear optical coupling and described ac-dc converter circuit, described in its output control the second relay dead electricity, described the second relay obtains when electric, and the first normally-closed contact of described the second relay is connected with direct current system with the second normally-closed contact; During described the second relay electric-loss, the first normally-closed contact of described the second relay is connected with AC system with the second normally-closed contact.
Preferably, described direct voltage auto-changing circuit comprises PWM unit, transistor seconds and diode, the source electrode of described transistor seconds and drain electrode are in parallel with described diode forward, the grid of described transistor seconds is connected with described PWM unit, and described PWM unit is connected with described central control unit.
Preferably, described anti-shake electric installation adaptive control system also comprises man-machine interface and serial communication interface, and described man-machine interface is connected with described central control unit respectively with serial communication interface.
The present invention also provides a kind of anti-shake electric installation self-adaptation control method, be applied in anti-shake electric installation adaptive control system as above, comprise the following steps: system powers on, by described measuring circuit continuous measurement alternating voltage and alternating current, when alternating current has stream, and after lasting 15s, calculate the resistance of contactor coil, and the adaptive size that the direct voltage that need to provide is provided, when detecting alternating voltage, system falls, and direct voltage detected when normal, central control unit is controlled alternating current-direct current commutation circuit and failure of current circuit operation, switch to direct current system power supply, when system is for shaking electric situation, the electric time delay of shaking keeps, shake electric delay time to or alternating voltage when recovering two conditions and meeting at least one, it is that contactor is powered that central control unit switches direct current system power supply.
Preferably, idiographic flow comprises the following steps:
S1: enter main program entrance;
S2: system initialization;
S3: creation task 0, task 1 and task 2;
S4: initiating task 0, task 1 and task 2;
S5: main program entrance finishes.
Preferably, the execution interval of described task 0 is 5ms, and the execution interval of task 1 is 20ms, and the execution interval of task 2 is 50ms.
Anti-shake electric installation adaptive control system provided by the invention and control method thereof compared with prior art tool have the following advantages:
1. system is measured according to measuring circuit alternating voltage and alternating current, calculate the resistance of contactor coil, and maintain alternating current according to contactor coil, the adaptive size that calculates the direct voltage that output need to be provided, carrys out theory of correspondences output dc voltage by direct voltage auto-changing circuit without the adjustment direct voltage output size of extreme difference;
2. for the contactor of different capabilities size, system is the self adaptation regulation output direct voltage size of intelligence completely, does not need manually to have participated in;
3. avoided need to readjusting from debugging, replacing contactor the workload that voltage brings, improved production efficiency;
4. after having set DC operation pattern, A.C. contactor can be powered to direct current system from AC system power switching under normal circumstances, has reduced interchange energy consumption (contactor exists eddy current loss), and reduced noise (contactor electric current exists zero crossing, has AC noise).
Accompanying drawing explanation
Fig. 1 is the theory diagram of existing anti-shake electric installation control system;
Fig. 2 is the simple block diagram of the anti-shake electric installation adaptive control system of the embodiment of the invention;
Fig. 3 is the circuit diagram of the anti-shake electric installation adaptive control system of the embodiment of the invention;
Fig. 4 is the flow chart of main program in the anti-shake electric installation self-adaptation control method of the embodiment of the invention;
Fig. 5 is the flow chart of task 1 in the anti-shake electric installation self-adaptation control method of the embodiment of the invention;
Fig. 6 is the flow chart of task 2 in the anti-shake electric installation self-adaptation control method of the embodiment of the invention;
Fig. 7 is the flow chart of task 0 in the anti-shake electric installation self-adaptation control method of the embodiment of the invention;
Fig. 8 is the flow chart of switching control program in the anti-shake electric installation self-adaptation control method of the embodiment of the invention.
In Fig. 2-8: 10-measuring circuit, 20-central control unit, 30-ac-dc converter circuit, 40-alternating current-direct current commutation circuit, 50-failure of current circuit, 60-direct voltage auto-changing circuit.
Embodiment
For the technical scheme of more detailed statement foregoing invention, below list specific embodiment and carry out Proof Technology effect; It is emphasized that these embodiment are not limited to limit the scope of the invention for the present invention is described.
Please refer to Fig. 2 to Fig. 8, anti-shake electric installation adaptive control system provided by the invention, comprise AC power (220V alternating current), measuring circuit 10, central control unit 20 and ac-dc converter circuit 30, also comprise alternating current-direct current commutation circuit 40, failure of current circuit 50 and direct voltage auto-changing circuit 60, wherein
Described AC power provides alternating voltage for contactor KM;
Described measuring circuit 10 is measured the voltage and current signal of AC power, wherein, alternating voltage Uac, alternating current Iac, and the value of Uac and Iac is fed back to described central control unit 20, the electric circuit constitute of described measuring circuit 10 and component function are identical with prior art, repeat no more herein;
The alternating current that described ac-dc converter circuit 30 provides described AC power is converted to direct current, and the d. c. voltage signal VE of storage is fed back to described central control unit 20, wherein, the d. c. voltage signal VE of storage is the voltage (charge volume of capacitor C) at capacitor C two ends;
Described ac-dc converter circuit 30 provides direct voltage Udc by described direct voltage auto-changing circuit 60 for contactor KM;
Described central control unit 20 controls according to the voltage VE at described alternating voltage Uac and capacitor C two ends the electric power system that described alternating current-direct current commutation circuit 40 is selected described contactor KM;
Described failure of current circuit 50 is arranged between described AC power and contactor KM; when the electric power system of described contactor KM switches to direct current system from AC system; described central control unit 20 is controlled the electric current that described failure of current circuit 50 cuts off AC power; the object of current circuit is cut off in realization without arc; the the first normally-closed contact J2-1 and the second normally-closed contact J2-2 that avoid arc through the second contactor J2, protect contact.
Preferably, please emphasis with reference to figure 3, described failure of current circuit 50 comprises the first relay J 1, bridge rectifier, the first resistance R 1 and the first transistor IGBT1, the normally-closed contact J1-1 of described the first relay J 1 is series between AC power and contactor KM, and the pin relative with a group of described bridge rectifier is in parallel, another of described bridge rectifier organize relative pin be parallel to described the first transistor IGBT1 source electrode and drain electrode between, and in parallel with described the first resistance R 1, the grid of described the first transistor IGBT1 is connected with described central control unit 20.
Preferably, please continue to refer to Fig. 3, described alternating current-direct current commutation circuit 40 comprises the second relay J 2, linear optical coupling, Hall element and voltage comparator, particularly, described linear optical coupling is mainly used in the isolation of signal, and anti-interference, described Hall element is used for measuring direct current Idc, described direct voltage Udc compares in described voltage comparator by the voltage VE at the capacitor C two ends of storage in described linear optical coupling and described ac-dc converter circuit 30, described in its output control the second relay J 2 dead electricity, described the second relay J 2 when electric, the first normally-closed contact J2-1 of described the second relay J 2 is connected with direct current system with the second normally-closed contact J2-2, during described the second relay J 2 dead electricity, the first normally-closed contact J2-1 of described the second relay J 2 is connected with AC system with the second normally-closed contact J2-2.
Preferably, please continue to refer to Fig. 3, described direct voltage auto-changing circuit 60 comprises PWM unit, transistor seconds IGBT2 and diode D, the source electrode of described transistor seconds IGBT2 and drain electrode are in parallel with described diode D forward, the grid of described transistor seconds IGBT2 is connected with described PWM unit, and described PWM unit is connected with described central control unit 20.
Described anti-shake electric installation adaptive control system also comprises man-machine interface and serial communication interface, and man-machine interface is for man-machine interaction; Serial communication interface, for the collection of external signal, adopts RS485 in the present embodiment, certainly, its quantity can be expanded according to concrete needs.
Please refer to Fig. 4-8, and in conjunction with Fig. 2-3, the present invention also provides a kind of anti-shake electric installation self-adaptation control method, be applied in anti-shake electric installation adaptive control system as above, the system of the steps include: powers on, by described measuring circuit continuous measurement alternating voltage and alternating current, when alternating current has stream, and after lasting 15s, calculate the resistance of contactor coil, and the adaptive size that the direct voltage that need to provide is provided, when detecting alternating voltage, system falls, and direct voltage detected when normal, central control unit is controlled alternating current-direct current commutation circuit and failure of current circuit operation, switch to direct current system power supply, when system is for shaking electric situation, the electric time delay of shaking keeps, shake electric delay time to or alternating voltage when recovering two conditions and meeting at least one, it is that contactor is powered that central control unit switches direct current system power supply.
Please emphasis with reference to figure 4, its steps flow chart comprises:
S1: enter main program entrance;
S2: system initialization, comprise system initialization, sign initialization and operating system initialization, wherein indicate that initialization specifically comprises operational mode, forbids the set of switching mark and all abnormality marks, particularly: in initialization procedure: operational mode sets to 0, forbids that switching mark puts 1, all abnormality marks set to 0.Operational mode comprises 0,1,2 totally 3 operating states: when operational mode=0, for AC system power supply, when operational mode=1, for shaking power mode power supply, when operational mode=2, be direct current system power supply; Forbid that switching mark has 0 and 1 two operating state: when forbidding switching mark=0, represent to allow to switch to direct current system power supply, when forbidding switching mark=1, represent not allow to switch to direct current system power supply; All abnormality marks have 0 and 1 two kind of operating state, when abnormal generation not, and all abnormality mark=0, when having abnormal generation, all abnormality mark=1.In other words, during initialization, select AC system to power, because capacitor C is also charged, therefore can not switch to direct current system power supply, acquiescence does not have abnormal conditions to occur.
S3: creation task 0, task 1 and task 2, preferably, the execution interval of described task 0 is 5ms, and the execution interval of task 1 is 20ms, and the execution interval of task 2 is 50ms.
S4: initiating task 0, task 1 and task 2;
S5: main program entrance finishes.
Particularly, ask emphasis with reference to figure 5, the step of described task 1 comprises:
S11: enter task 1 entrance;
S12: calculate alternating voltage Uac, alternating current Iac, adopt FFT mode in the present embodiment, i.e. fast Fourier transform mode is calculated Uac and Iac;
S13: inductance XL and the resistance R of calculating contactor KM coil;
S14: calculate direct voltage Udc, direct current Idc;
S15: judge whether to allow the switching of electric power system, judge whether will to forbid that switching mark sets to 0;
S16: task 1 finishes.
Particularly, ask emphasis with reference to figure 6, the step of described task 2 comprises:
S21: enter task 2 entrances;
S22: show in man-machine interface by man-machine interface;
S23: whether monitoring external data interface has external signal input, comprises serial communication 1 processing (to external signal), and serial communication 2 is processed (internally signal), and other programs;
S24: task 2 finishes.
Particularly, ask emphasis with reference to figure 7, the step of described task 0 comprises:
S100: judge that whether operational mode is 0, if perform step S110, performs step S130 if not;
S110: judging that extremely whether direct voltage is that 1(direct voltage is 0 when normal, is 1 when abnormal), if perform step S130, perform step if not S111;
S111: judging that whether direct voltage output is that 1(is 0 during without direct voltage output, is 1 while having direct voltage output), if perform step S130, perform step if not S112;
The alternating voltage Uac that S112: read step S12 obtains, the value of alternating current Iac, and enter step S113;
S113: judge alternating current Iac whether be greater than 0 and alternating voltage Uac be greater than 160V, if so, prove that alternating current output is normal, perform step S114, perform step if not S120;
S114: have flow counter to add 1, and enter step S115;
S115: judgement has flow counter whether to be greater than 3000, if so, proves that capacitor C charged completely, performs step S116, and task 0 finishes if not;
S116: the value of the resistance R of the contactor KM coil obtaining in read step S13, and enter step S117;
S117: calculate theoretical direct voltage output value Udcset, its computational methods are: Udcset=0.8*Iac*R, enters step S118;
S118: the theoretical direct voltage output value Udcset calculating in storing step S117, and control described direct voltage auto-changing circuit 60 this theory direct voltage output value of output Udcset for described contactor KM provides direct voltage, enter step S119;
S119: direct voltage output puts 1, task 0 finishes;
S120: have flow counter zero clearing, then enter step S115;
S130: the theoretical direct voltage output value Udcset drawing in read step S117, and enter step S131;
S131: the direct voltage Udc obtaining in read step S14, and enter step S132;
S132: whether the theoretical direct voltage output value Udcset in determining step 130 conforms to the direct voltage Udc in step S131, if so, proves that direct current system power supply is normal, enters step S133, enters if not step S140;
S133: electric voltage exception counter O reset, direct voltage sets to 0 extremely, enters step S134;
S134: judge whether electric voltage exception counter is greater than 10ms, if so, proves direct current system abnormal electrical power supply, enters step S135, if not, prove and may, for shaking electric situation, enter step S150;
S135: direct voltage puts 1 extremely, and direct voltage output sets to 0, forbids that switching mark puts 1, switches to AC system power supply, and task 0 finishes;
S140: electric voltage exception counter+1, and enter step S134;
S150: judge that whether operational mode is 1, if enter step S151, enters step S160 if not;
S151: whether the electric delay time of judgement rolling arrives, if enter step S153, enters if not step S152;
S152: whether the alternating voltage Uac value in determining step S112 is greater than 180V, if so, proves that AC system is normal, enters step S153, if not, proves that AC system is also abnormal, and task 0 finishes;
S153: control the first relay J 1 and the equal dead electricity of the second relay J 2, operational mode sets to 0, forbids that switching mark puts 1, is namely switched to AC system power supply;
S160: whether the alternating voltage Uac value in determining step S112 is less than 150V, still likely there is shaking electricity condition in proof if so,, enters step S161, task 0 finishes if not, keeps direct current system power supply;
S161: judge whether time delay 20ms arrives, if so, proof is confirmed as the electric situation of shaking, and enters step S162, if not, task 0 finishes;
S162: operational mode puts 1, task 0 finishes, and has namely entered the electric power supply state of rolling.
Preferably, ask emphasis with reference to figure 8, the operating procedure of switching control program comprises:
S200: signals collecting, comprise the collection of analog quantity, as: alternating voltage Uac, alternating current Iac, direct voltage Udc, direct current Idc etc., and be converted into corresponding digital quantity; The collection of intake, the external signal for example monitoring in step S23;
S210: judge that whether operational mode is 0, if perform step S211, performs step S230 if not;
S211: judgement forbids that whether switching mark is 1, if interrupt routine finishes, performs step S212 if not;
S212: judge whether direct voltage output is 1, if so, proves that direct current system is normal, performs step S213, and interrupt routine finishes if not;
S213: judge whether alternating voltage Uac falls, if so, prove that alternating voltage is abnormal, perform step S214, perform step if not S220;
S214: judge whether alternating current Iac increases, if perform step S237, perform step if not S215;
S215: operational mode puts 1, and enter step S216, enter the electric power supply state of rolling;
S216: start described failure of current circuit 50, particularly, the first transistor IGBT1 starts, the first relay J 1 obtains electric, enters step S217;
S217: time delay 4ms, guarantee that the first normally-closed contact J1-1 of the first relay J 1 disconnects, enter step S218;
S218: start described alternating current-direct current commutation circuit, particularly, turn-off the first transistor IGBT1, start the second relay J 2, interrupt routine finishes;
S220: judge whether to switch to ac power supply system, if perform step S221, interrupt routine finishes if not, particularly, in described central control unit 20, be provided with a MODE position, when MODE sets to 0, allow direct current system power supply and shake power mode power supply, can after having charged, capacitor C use like this direct current system power supply in a period of time, with electrical energy saving always; When MODE puts 1, allow direct current system power supply, the power supply of rolling power mode and AC system power supply;
S221: operational mode puts 2, switches to direct current system power supply, enters step S216;
S230: judge that extremely whether direct voltage is 1, if perform step S236, performs step S231 if not;
S231: the direct current Idc obtaining in read step S14, and enter step S232;
S232: judge whether theoretical direct current output valve Idcset is greater than the direct current Idc in step S231, if so, proves that abnormal electrical power supply may appear in direct current system, enters step S233, enters if not step S240;
S233: without flow counter+1, and enter step S234;
S234: whether judgement is greater than 20ms without flow counter, if so, confirms direct current system abnormal electrical power supply, performs step S235, and interrupt routine finishes if not;
S235: direct current puts 1 extremely, and enter step S236;
S236: close alternating current-direct current commutation circuit 40 and failure of current circuit 50, particularly, and the first relay J 1 and the equal dead electricity of the second relay J 2, operational mode sets to 0, and enters step S237;
S237: forbid that switching mark puts 1, interrupt routine finishes;
S240: without flow counter zero clearing, and perform step S234.
In sum, anti-shake electric installation adaptive control system provided by the invention and control method thereof, this system comprises AC power, measuring circuit 10, central control unit 20, ac-dc converter circuit 30, alternating current-direct current commutation circuit 40, failure of current circuit 50 and direct voltage auto-changing circuit 60, and AC power provides alternating voltage; Measuring circuit 10 is measured the voltage and current of AC power, and feeds back to central control unit 20; The alternating current that ac-dc converter circuit 30 provides AC power is converted to direct current, and the d. c. voltage signal of storage is fed back to central control unit 20; Ac-dc converter circuit 30 provides direct voltage by direct voltage auto-changing circuit 60 for contactor KM; Central control unit 20 is selected the electric power system of contactor KM according to alternating voltage and DC voltage control alternating current-direct current commutation circuit 40; Failure of current circuit 50 is arranged between AC power and contactor KM, and when the electric power system of contactor KM switches to direct current system from AC system, central control unit 20 is controlled the electric current that failure of current circuit 50 cuts off AC power.
The present invention is and alternating current Iac big or small by measurement contactor KM resistance R automatically, and by the magnetic adhesion principle of equal effects, automatically calculates the theoretical direct voltage output value Udcset that need to provide.Whole process no longer needs manually adjust and participate in, the automatic adaptive capacity of anti-shake electric module to the contactor KM of different capabilities is provided greatly, and make user avoid need to readjusting from debugging, replacing contactor the workload that voltage brings, improved production efficiency.After having set DC operation pattern, contactor KM can power to direct current system from AC system power switching under normal circumstances, has reduced interchange energy consumption, and has reduced noise.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these change and modification.
Claims (8)
1. an anti-shake electric installation adaptive control system, comprise AC power, measuring circuit, central control unit and ac-dc converter circuit, it is characterized in that, also comprise alternating current-direct current commutation circuit, failure of current circuit and direct voltage auto-changing circuit, wherein
Described AC power provides alternating voltage for contactor;
Described measuring circuit is measured the voltage and current signal of AC power, and feeds back to described central control unit;
The alternating current that described ac-dc converter circuit provides described AC power is converted to direct current, and the d. c. voltage signal of storage is fed back to described central control unit;
Described ac-dc converter circuit provides direct voltage by described direct voltage auto-changing circuit for contactor;
Described central control unit, according to described alternating voltage and d. c. voltage signal, is controlled the electric power system that described alternating current-direct current commutation circuit is selected described contactor;
Described failure of current circuit is arranged between described AC power and contactor, and when the electric power system of described contactor switches to direct current system from AC system, described central control unit is controlled the electric current of described failure of current circuitry cuts AC power.
2. anti-shake electric installation adaptive control system as claimed in claim 1, it is characterized in that, described failure of current circuit comprises the first relay, bridge rectifier, the first resistance and the first transistor, the normally-closed contact of described the first relay is series between AC power and contactor, and the pin relative with a group of described bridge rectifier is in parallel, another of described bridge rectifier organize relative pin be parallel to described the first transistor source electrode and drain electrode between, and in parallel with described the first resistance, the grid of described the first transistor is connected with described central control unit.
3. anti-shake electric installation adaptive control system as claimed in claim 1, it is characterized in that, described alternating current-direct current commutation circuit comprises the second relay, linear optical coupling, Hall element and voltage comparator, described direct voltage compares in described voltage comparator by the d. c. voltage signal storing in described linear optical coupling and described ac-dc converter circuit, described in its output control the second relay dead electricity, described the second relay obtains when electric, and the first normally-closed contact of described the second relay is connected with direct current system with the second normally-closed contact; During described the second relay electric-loss, the first normally-closed contact of described the second relay is connected with AC system with the second normally-closed contact.
4. anti-shake electric installation adaptive control system as claimed in claim 1, it is characterized in that, described direct voltage auto-changing circuit comprises PWM unit, transistor seconds and diode, the source electrode of described transistor seconds and drain electrode are in parallel with described diode forward, the grid of described transistor seconds is connected with described PWM unit, and described PWM unit is connected with described central control unit.
5. anti-shake electric installation adaptive control system as claimed in claim 1, it is characterized in that, described anti-shake electric installation adaptive control system also comprises man-machine interface and serial communication interface, and described man-machine interface is connected with described central control unit respectively with serial communication interface.
6. an anti-shake electric installation self-adaptation control method, be applied in the anti-shake electric installation adaptive control system as described in any one in claim 1-5, it is characterized in that, comprise the following steps: system powers on, by described measuring circuit continuous measurement alternating voltage and alternating current, when alternating current has stream, and after lasting 15s, calculate the resistance of contactor coil, and the adaptive size that the direct voltage that need to provide is provided, when detecting alternating voltage, system falls, and direct voltage detected when normal, central control unit is controlled alternating current-direct current commutation circuit and failure of current circuit operation, switch to direct current system power supply, when system is for shaking electric situation, the electric time delay of shaking keeps, shake electric delay time to or alternating voltage when recovering two conditions and meeting at least one, it is that contactor is powered that central control unit switches direct current system power supply.
7. anti-shake electric installation self-adaptation control method as claimed in claim 6, is characterized in that, comprises the following steps:
S1: enter main program entrance;
S2: system initialization;
S3: creation task 0, task 1 and task 2;
S4: initiating task 0, task 1 and task 2;
S5: main program entrance finishes.
8. anti-shake electric installation self-adaptation control method as claimed in claim 7, is characterized in that, the execution interval of described task 0 is 5ms, and the execution interval of task 1 is 20ms, and the execution interval of task 2 is 50ms.
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