CN204481564U - The controller of power automatic transfer switch - Google Patents

Abstract

The controller of power automatic transfer switch comprises the multiple modules be independently arranged on Switch main body, wherein the protective circuit of power module gets single-phase AC voltage from conventional, stand-by power supply inlet wire respectively, and the voltage transitions after transforming circuit respectively transformation is the direct voltage for each module by rectification and indicating circuit; Conventional, the standby voltage sample circuit of control module gather voltage signal from two electric power incoming lines respectively, position detecting circuit gathers switch position signal from Switch main body, single-chip microcomputer carries out judgement process by these signals and from the data of interactive interface and communicating circuit input, the power supply that control relay drive circuit performs Switch main body is changed automatically, result is exported by interactive interface and communicating circuit simultaneously; The signal of the key circuit of display module by being input to interactive interface through plug type connecting line after the drive circuit process of button and display, and for display screen display after the signal transacting that the interactive interface transmitted by connecting line is exported.

Description

The controller of power automatic transfer switch

Technical field

The utility model belongs to Low Voltage Electrical Apparatus, relates to a kind of power automatic transfer switch electrical equipment, particularly a kind of controller of power automatic transfer switch.

Background technology

Usually some are as hospital, government bodies, smelt, the power inleting terminal of the important events such as chemical industry all adopts two-way or three-way power, to meet the requirement of uninterrupted power supply, and along with the fast development of modern economy society, require that the occasion adopting two-way or three-way power uninterrupted power supply gets more and more, power automatic transfer switch is requisite electrical equipment in two-way or three-way power electric power system, common dual-power transfer switch will switch power supply to stand-by power supply automatically when conventional power failure or when having a power failure, to ensure normal power supply, its middle controller is the critical piece in dual-power transfer switch electrical equipment, it is for monitoring, the switching of the operation and control circuit of protective circuit.But existing Double-power controller all designs in a shell, cause the volume of controller large, mounting means can only adopt integral type to encapsulate, mounting means is single, not only need take very large centralized space in dual-power transfer switch, if controller damages, safeguard very inconvenient, further, the life-span of the part components and parts in controller is shorter, but because controller and dual-power transfer switch support the use, even there is local fault in controller, also can only change whole controller, cause maintenance cost high, and production cost remains high.In addition, owing to limiting by the overall structure that can not be split combination, the position of the panel for interactive display, operation on controller arranges to meet and facilitates interactive requirement, also makes product use inconvenience.

But, these circuit of existing integrally-built controller generally do not have detachable property, such as due to special construction and its known special installation requirement of current transformer, current transformer is inherently non-removable, as adopted the voltage of current transformer, current collection circuit and make the open circuit that the secondary of current transformer exports because of dismounting, then may bring new safety problem.Even some circuit has detachable property, but also there is new unexpected problem in the fractionation of certain or some circuit and combination possibly.Therefore, be not simply the overall structure that can not be split combination of existing controller is split into several minor structure just can the above-mentioned technical problem of package solution effectively.

Summary of the invention

In order to comprehensively solve the defect of above-mentioned prior art, the purpose of this utility model is the controller of the power automatic transfer switch providing a kind of modularization, small size, economy better, this controller is formed by conveniently detachable multiple standalone modules, not only solve the problem that mounting means is single, greatly facilitate maintenance and safeguard, considerably reduce production and maintenance cost, and solve controller volume problem bigger than normal, be conducive to the Miniaturization Design of change over switch product.

To achieve these goals, the utility model have employed following technical scheme.

A kind of controller of power automatic transfer switch; be characterized in comprising the power module 1 be independently arranged on Switch main body 5, control module 2 and display module 3; wherein: described power module 1 comprises protective circuit 101, transforming circuit 102 and rectification and indicating circuit 103; described protective circuit 101 gets single-phase AC voltage from conventional electric power incoming line JX1 and stand-by power supply inlet wire JX2 respectively, and the voltage transitions after described transforming circuit 102 respectively transformation is the direct voltage of each module for power supply to described controller by described rectification and indicating circuit 103.Described control module 2 comprises single-chip microcomputer, DC/DC change-over circuit, common voltage sample circuit, standby voltage sample circuit, position detecting circuit, relay drive circuit, interactive interface and communicating circuit, described common voltage sample circuit, standby voltage sample circuit is respectively from conventional electric power incoming line JX1, stand-by power supply inlet wire JX2 gathers voltage signal, described position detecting circuit gathers switch position signal from Switch main body 5, described single-chip microcomputer is by the described voltage signal collected, switch position signal and from described interactive interface and communicating circuit input data carry out judgements process, and the relay drive circuit described in controlling according to result performs the automatic conversion operations of power supply of Switch main body 5, result is exported by described interactive interface and communicating circuit simultaneously.Described display module 3 comprises drive circuit, key circuit, the connecting line 4 between display screen and the interactive interface being connected to this drive circuit and described control module 2 in pluggable mode of button and display, the signal that described key circuit is keyed in, by being input to the interactive interface of described control module 2 after this drive circuit process through described connecting line 4, exports to described display screen display by connecting line 4 after the signal transacting that the interactive interface transmitted is exported by described drive circuit.

The controller of power automatic transfer switch of the present utility model, the common voltage sample circuit of described control module 2 comprises conventional A phase sampler circuit 21A, conventional B phase sampler circuit 21B, conventional C phase sampler circuit 21C and conventional N pole control circuit 21N, described conventional A phase sampler circuit 21A, conventional B phase sampler circuit 21B, conventional C phase sampler circuit 21C adopts the sample circuit of same structure, each sample circuit comprises combined resistance R1, electric capacity C101, amplifier U101 and resistance R110, one end of the combined resistance R1 of same sample circuit, one end of electric capacity C101, one end of resistance R110 and the in-phase end U3 of amplifier U101 are connected in parallel, the end of oppisite phase U2 of each amplifier U101 is connected with its output U1 short circuit, the positive pole of the power end of each amplifier U101 meets the DC power anode VCC of power module 1, the negative pole of the power end of each amplifier U101 connects the DC power supply earth polar of power module 1, the other end correspondence of each combined resistance R1 connects a phase line in the three-phase firewire of conventional electric power incoming line JX1, the other end of each electric capacity C101 is connected in parallel in the DC power supply earth polar of power module 1, the other end of each resistance R110 is connected in parallel in node GND1, the output U1 of each amplifier U101 is respectively to single-chip microcomputer output voltage signal, described conventional N pole control circuit 21N comprises combined resistance R10, resistance R116, resistance R117, resistance R118, electric capacity C104, electric capacity C105, electric capacity C106, optocoupler U102 and amplifier U101D, a pole of the control output end of the one termination optocoupler U102 of combined resistance R10, another termination of combined resistance R10 commonly uses the neutral line N1 of electric power incoming line JX1, one end of the positive pole connecting resistance R116 of the control input end of optocoupler U102, the other end of resistance R116 meets the signal output part OUT-N1 of single-chip microcomputer, the negative pole of the control input end of optocoupler U102 connects DC power supply earth polar, another pole of the control output end of optocoupler U102, one end of electric capacity C106, the output U4 of amplifier U101D, the end of oppisite phase U6 of amplifier U101D is connected in parallel in node GND1, the DC power anode VCC of a termination power module 1 of resistance R117, the other end of resistance R117, one end of resistance R118, the positive pole of electric capacity C104, one end of electric capacity C105 is connected in parallel in the in-phase end of amplifier U101D, the other end of resistance R118, the negative pole of electric capacity C104, the other end of electric capacity C105, the other end of electric capacity C106 is connected in parallel in the DC power supply earth polar of power module 1.

The controller of power automatic transfer switch of the present utility model, the standby voltage sample circuit of described control module 2 comprises A phase sampler circuit 22A for subsequent use, B phase sampler circuit 22B for subsequent use, C phase sampler circuit 22C for subsequent use and standby N pole control circuit 22N.Described A phase sampler circuit 22A for subsequent use, B phase sampler circuit 22B for subsequent use, C phase sampler circuit 22C for subsequent use adopts the sample circuit of same structure, each sample circuit comprises combined resistance R2, electric capacity C201, amplifier U201 and resistance R210, one end of the combined resistance R2 of same sample circuit, one end of electric capacity C201, one end of resistance R210 and the in-phase end U3 of amplifier U201 are connected in parallel, the end of oppisite phase U2 of each amplifier U201 is connected with its output U1 short circuit, the positive pole of the power end of each amplifier U201 meets the DC power anode VCC of power module 1, the negative pole of the power end of each amplifier U201 connects the DC power supply earth polar of power module 1, the other end correspondence of each combined resistance R2 connects a phase line in the three-phase firewire of stand-by power supply inlet wire JX2, the other end of each electric capacity C201 is connected in parallel in the DC power supply earth polar of power module 1, the other end of each resistance R210 is connected in parallel in node GND2, the output U1 of each amplifier U201 is respectively to single-chip microcomputer output voltage signal, described standby N pole control circuit 22N comprises combined resistance R20, resistance R216, resistance R217, resistance R218, electric capacity C204, electric capacity C205, electric capacity C206, optocoupler U202 and amplifier U201D, a pole of the control output end of the one termination optocoupler U202 of combined resistance R20, the neutral line N2 of another termination stand-by power supply inlet wire JX2 of combined resistance R20, one end of the positive pole connecting resistance R216 of the control input end of optocoupler U202, the other end of resistance R216 meets the signal output part OUT-N2 of single-chip microcomputer, the negative pole of the control input end of optocoupler U2 02 connects DC power supply earth polar, another pole of optocoupler U202 control output end, one end of electric capacity C206, the output U4 of amplifier U201D, the end of oppisite phase U6 of amplifier U201D is connected in parallel in node GND2, the DC power anode VCC of a termination power module 1 of resistance R217, the other end of resistance R217, one end of resistance R218, the positive pole of electric capacity C204, one end of electric capacity C205 is connected in parallel in the in-phase end of amplifier U201D, the other end of resistance R218, the negative pole of electric capacity C204, the other end of electric capacity C205, the other end of electric capacity C206 is connected in parallel in the DC power supply earth polar of power module 1.

The controller of power automatic transfer switch of the present utility model, the common voltage sample circuit of described control module 2 comprises optocoupler U102, the output signal OUT-N1 of described single-chip microcomputer controls optocoupler U102 ON/OFF, to control the connection/disjunction of conventional power supply N pole; The standby voltage sample circuit of described control module 2 comprises optocoupler U202, and the output signal OUT-N2 of described single-chip microcomputer controls optocoupler U202 ON/OFF, to control the connection/disjunction of conventional power supply N pole.Single-chip microcomputer is in optocoupler U102 conducting and after optocoupler U202 disconnects, then to be sampled to conventional electric power incoming line JX1 by common voltage sample circuit; Or single-chip microcomputer after optocoupler U102 disconnects also optocoupler U202 conducting, then is sampled to stand-by power supply inlet wire JX2 by standby voltage sample circuit.

The controller of power automatic transfer switch of the present utility model, the button of its display module 3 and the drive circuit of display comprise driving chip U301, resistance R301, resistance R302, resistance R303, electric capacity C303, electric capacity C304 and electric capacity C305, one end of resistance R301, one end of electric capacity C303 is connected in parallel in the DIO pin of driving chip U301, one end of resistance R302, one end of electric capacity C304 is connected in parallel in the CLK pin of driving chip U301, one end of resistance R303, one end of electric capacity C305 is connected in parallel in the STB pin of driving chip U301, the other end of resistance R301, the other end of resistance R302, the other end of resistance R303 and the VDD pin of driving chip U301 are connected in parallel, with adapt voltages EVCC, the other end of electric capacity C303, the other end of electric capacity C304, the other end of electric capacity C305, the GND pin of driving chip U301 is connected in parallel in the DC power supply earth polar of power module 1.Described key circuit comprises automatic/hand button SW301, button SW303 is set, inquire button SW305, conventional button SW302, emergency button SW304 and two points of button SW306, one end of automatic/hand button SW301, one end of conventional button SW302 is connected in parallel in the SEG1 pin of driving chip U301, one end of button SW303 is set, one end of emergency button SW304 is connected in parallel in the SEG2 pin of driving chip U301, one end of inquire button SW305, one end of two points of button SW306 is connected in parallel in the SEG3 pin of driving chip U301, the other end of automatic/hand button SW301, the other end of button SW303 is set, the other end of inquire button SW305 is connected in parallel in the KEY1 pin of driving chip U301, the other end of conventional button SW302, the other end of emergency button SW304, the other end of two points of button SW306 is connected in parallel in the KEY2 pin of driving chip U301.

The controller of power automatic transfer switch of the present utility model, the protective circuit 101 of its power module 1 comprises the common mode choke L401 meeting conventional electric power incoming line JX1, meet the common mode choke L402 of stand-by power supply inlet wire JX2, the neutral pole N1 of the input of described common mode choke L401, phase line pole A1 meets the neutral line N1 of conventional electric power incoming line JX1 respectively, a phase phase A1 in three-phase firewire, the neutral pole N10 of the output of common mode choke L401 is the first neutral output stage N1 ' of protective circuit 101, protective tube F401 is connected in series between the live wire electrode A10 of the output of common mode choke L401 and the first live wire output stage A1 ' of this protective circuit 101, filter capacitor C403 is connected in parallel between live wire electrode A10 and neutral pole N10, piezo-resistance RV401 is connected in parallel between the first live wire output stage A1 ' and the first neutral output stage N1 ', the neutral pole N2 of the input of described common mode choke L402, phase line pole A2 meets the neutral line N2 of stand-by power supply inlet wire JX2 respectively, a phase line A2 in three-phase firewire, the neutral pole N20 of the output of common mode choke L402 is the second neutral output stage N2 ' of protective circuit 101, protective tube F402 is connected in series between the live wire electrode A20 of the output of common mode choke L402 and the second live wire output stage A2 ' of this protective circuit 101, filter capacitor C404 is connected in parallel between live wire electrode A20 and neutral pole N20, piezo-resistance RV402 is connected in parallel between the second live wire output stage A2 ' and the second neutral output stage N2 '.The transforming circuit 102 of described power module 1 comprises transformer T401 and transformer T402; two inputs of transformer T401 are connected with the first live wire output stage A1 ', the first neutral output stage N1 ' of protective circuit 101 respectively, and two inputs of transformer T402 are connected with the second live wire output stage A2 ', the second neutral output stage N2 ' of protective circuit 101 respectively.Rectification and the indicating circuit 103 of described power module 1 comprise rectifier bridge DB401, rectifier bridge DB402, be connected in the electric capacity C401 between the DC power anode VCC of power module 1 and DC power supply earth polar respectively in parallel, electric capacity C402, the resistance R401 be connected in series and light-emitting diode H401, two ac input end Z11 of rectifier bridge DB401, Z13 is connected with two inputs of the transformer T401 of transforming circuit 102 respectively, two ac input end Z21 of rectifier bridge DB402, Z23 is connected with two inputs of the transformer T402 of transforming circuit 102 respectively, the direct current output cathode Z12 of rectifier bridge DB401 and the direct current output cathode Z22 of rectifier bridge DB402 is connected in parallel, form the DC power anode VCC of power module 1, the direct current output negative pole Z14 of rectifier bridge DB401 and the direct current output negative pole Z24 of rectifier bridge DB402 is connected in parallel, form the DC power supply earth polar of power module 1, the two ends that described resistance R401 and light-emitting diode H401 is connected in series formation respectively with DC power anode VCC, DC power supply earth polar connects.

The controller of power automatic transfer switch of the present utility model; described power module 1 also comprises power input interface J401 and two power line 401; wherein one is connected between conventional electric power incoming line JX1 and power input interface J401 in pluggable mode; another is connected between stand-by power supply inlet wire JX2 and power input interface J401 in pluggable mode, and described protective circuit 101 is respectively from power input interface J401 power taking.

The controller of power automatic transfer switch of the present utility model, described power module 1 also comprises power output interface J403 and electric power connection line 403, power output interface J403 is connected with rectification and indicating circuit 103, electric power connection line 403 is connected between power output interface J403 and other electricity consumption module in pluggable mode, and external all electrical equipment of power module 1 can be made to connect and can realize grafting easily.

The controller of power automatic transfer switch of the present utility model, described control module 2 also comprises the conventional acquisition interface J201 be connected with common voltage sample circuit, conventional gathering line 201, the acquisition interface J202 for subsequent use be connected with standby voltage sample circuit and gathering line for subsequent use 202, conventional gathering line 201 is connected between conventional electric power incoming line JX1 and conventional acquisition interface J201 in pluggable mode, and gathering line 202 for subsequent use is connected between stand-by power supply inlet wire JX2 and acquisition interface J202 for subsequent use in pluggable mode.

The controller of power automatic transfer switch of the present utility model, described control module 2 also comprise be connected with relay drive circuit executive's interface J203, perform connecting line 203, the detection interface J204 be connected with position detecting circuit and detect connecting line 204, performing connecting line 203 is connected between the performance element 501 of Switch main body 5 and executive's interface J203 in pluggable mode, detects connecting line 204 and is connected in pluggable mode between the detecting unit 502 of Switch main body 5.

Controller is carried out modularized design by the utility model, that is: the power module, control module and the display module that are independently arranged on Switch main body is adopted, the controling appliance of the power automatic transfer switch provided according to the utility model is made to have following significant technique effect: one is reduce controller volume, and controller can better be coordinated with automatic change-over; Two is that display module is independent, both can integrally install, also can partial installation, solves the problem that controller mounting means is single; Three is if any one module goes wrong in the controller of modularized design, can change module at once, solves controller and safeguards inconvenient problem; Four is instead of original current transformer sample mode with sampling resistor step-down sample circuit, reliably more economical, solves the problem that controller can not be split and cost is high.

Accompanying drawing explanation

Fig. 1 is the perspective view of the controller of power automatic transfer switch of the present utility model.

Fig. 2 is the topology layout figure of the information displaying of the display screen of display module 3 in controller of the present utility model.

Fig. 3 is the structured flowchart of the controller of power automatic transfer switch of the present utility model.

Fig. 4 is the electrical block diagram of the power module 1 in the controller shown in Fig. 3.

Fig. 5 is the structural representation of the common voltage sample circuit of control module 2 in the controller shown in Fig. 3.

Fig. 6 is the structural representation of the standby voltage sample circuit of control module 2 in the controller shown in Fig. 3.

Fig. 7 is the structural representation of the button of display module 3 in the controller shown in Fig. 3 and the drive circuit of display.

Fig. 8 is the button of display module 3 in the controller shown in Fig. 3 and the structural representation of circuit.

Embodiment

Below in conjunction with the embodiment that Fig. 1 to Fig. 8 provides, further illustrate the embodiment of the controller of power automatic transfer switch of the present utility model.Advantage of the present utility model and feature can be more clearly found out from the description of accompanying drawing illustrated embodiment.

See Fig. 1; the controller of power automatic transfer switch of the present utility model comprises the power module 1 be independently arranged on Switch main body 5, is independently arranged on the control module 2 on Switch main body 5 and the display module 3 that is independently arranged on Switch main body 5; by connecting line 4 upstream data signal between control module 2 and display module 3; controller and Switch main body 5 with the use of, realize protection and the conversion of supply voltage.Conventional power supply and stand-by power supply end of incoming cables alternating current are converted to the DC supply of controller by power module 1, control module 2 take single-chip microcomputer as core, by sampling to conventional power supply and backup power source voltage signal, process and judge, automatically changed (see Fig. 5,6) by relay circuit control switch body 5.Display module 3 passes through connecting line 4 by information displaying such as supply voltage value, position instruction, state instructions at display screen 302 (see Fig. 2,7,8).For guaranteeing the reliability service of dual-power transfer switch, need the rapid wear device in a planned way more in changer controller, but owing to can only realize by changing whole controller at present, thus cause small product size large and production cost remains high.Compared with prior art, obviously, the controller of power automatic transfer switch is carried out above-mentioned modularized design by the utility model, namely the advantage splitting into three standalone modules is: power module 1 and control module 2 can require according to Miniaturization Design the both sides being independently arranged on Switch main body 5, and display module 3 independently can be arranged on above Switch main body 5 according to facilitating interactive requirement; If controller breaks down, only need dismantle or change individual modules, without the need to dismantling or changing whole controller, therefore easy to maintenance, maintenance cost is low.

In figure 3, the display module 3 be independently arranged on Switch main body 5 comprises the drive circuit of button and display, key circuit, display screen and connecting line 4, connecting line 4 is connected between the interactive interface of drive circuit and control module 2 in pluggable mode, the signal that key circuit is keyed in is by being input to interactive interface through connecting line 4 after drive circuit process, the signal that interactive interface exports is input to drive circuit by connecting line 4, and after drive circuit process, export to display screen display, display screen adopts customization LED or LCD module, key circuit can perform conventional, for subsequent use, two points, manual/auto, arrange, the functions (see Fig. 2) such as inquiry.Described drive circuit adopts general driving chip U301, can adopt LED or LCD special driving chip, and the concrete structure of drive circuit can have kinds of schemes, and a kind of preferred scheme is as Fig. 3, shown in Fig. 7 and Fig. 8: the button of described display module 3 and the drive circuit of display comprise driving chip U301, resistance R301, resistance R302, resistance R303, electric capacity C303, electric capacity C304, electric capacity C305, one end of resistance R301, one end of electric capacity C303 is connected in parallel in the DIO pin of driving chip U301, one end of resistance R302, one end of electric capacity C304 is connected in parallel in the CLK pin of driving chip U301, one end of resistance R303, one end of electric capacity C305 is connected in parallel in the STB pin of driving chip U301, the other end of resistance R301, the other end of resistance R302, the other end of resistance R303 and the VDD pin of driving chip U301 are connected in parallel, with adapt voltages EVCC, and the other end of electric capacity C303, the other end of electric capacity C304, the other end of electric capacity C305, the GND pin of driving chip U301 is connected in parallel in the DC power supply earth polar of power module 1.In Fig. 8, described key circuit comprises automatic/hand button SW301, button SW303 is set, inquire button SW305, conventional button SW302, emergency button SW304 and two points of button SW306, one end of automatic/hand button SW301, one end of conventional button SW302 is connected in parallel in the SEG1 pin of driving chip U301, one end of button SW303 is set, one end of emergency button SW304 is connected in parallel in the SEG2 pin of driving chip U301, one end of inquire button SW305, one end of two points of button SW306 is connected in parallel in the SEG3 pin of driving chip U301, the other end of automatic/hand button SW301, the other end of button SW303 is set, the other end of inquire button SW305 is connected in parallel in the KEY1 pin of driving chip U301, the other end of conventional button SW302, the other end of emergency button SW304, the other end of two points of button SW306 is connected in parallel in the KEY2 pin of driving chip U301.As shown in Figure 2, the displaying contents of described display screen 302 can comprise the three-phase voltage value of conventional power supply, the three-phase voltage value of stand-by power supply, time set point, power supply status instruction, circuit breaker position instruction, mode of operation instruction, faulty indication, communication instruction.

In figure 3, the control module 2 be independently arranged on Switch main body 5 of the present utility model comprises single-chip microcomputer, DC/DC change-over circuit, common voltage sample circuit, standby voltage sample circuit, position detecting circuit, relay drive circuit, interactive interface and communicating circuit, the physical circuit of control module 2 is see Fig. 5, 6, the common voltage sample circuit of control module 2, standby voltage sample circuit is respectively from conventional electric power incoming line JX1, stand-by power supply inlet wire JX2 samples to conventional power supply and backup power source voltage signal, position detecting circuit gathers switch position signal from Switch main body 5, single-chip microcomputer is by voltage signal, switch position signal, the data of interactive interface and communicating circuit input are carried out process and are judged, and the conversion operations of Switch main body 5 is performed according to result control relay drive circuit, result is exported by interactive interface and communicating circuit simultaneously.That is: single-chip microcomputer is changed by relay drive circuit control automatic change-over body 5, gather the position of the switch of automatic change-over body simultaneously, the information such as supply voltage value, position instruction, state instruction are transferred to display module 3 by interactive interface and connecting line 4 and show.If user has requirement, also carry out communication, by data upload to computer by communicating circuit.The 26S Proteasome Structure and Function of single-chip microcomputer can adopt known device, and the voltage transitions of the DC power anode VCC of power module 1 is become the adapt voltages of single-chip microcomputer by DC/DC change-over circuit, and it can adopt known any one mode to realize.Position detecting circuit is used for two execution switches of sense switch body 5 (as circuit breaker, not shown) residing for closed/disjunction position, it can adopt known any one mode to realize, as sensitive switch (not shown), inputed to the switching signal (i.e. switch position signal) of single-chip microcomputer by sensitive switch, what make two execution switches of single-chip microcomputer identification switch body 5 closes/disjunction position.Relay drive circuit is used for two execution switches of control switch body 5 and closes/starting/stopping of the executive component (not shown) of disjunction, described executive component is as motor, single-chip microcomputer performs the conversion operations of Switch main body 5 according to result control relay drive circuit, be exactly as the executive component starting/stopping of motor by relay drive circuit control, the operating mechanism (not shown) of two execution switches is driven to perform closed/breaking operation by executive component again, realize three kinds of operating states of closing body 5 thus: conventional Power supply state, namely breaker closing in conventional electric power incoming line JX1 is connected on, and be connected on stand-by power supply inlet wire JX2 separating brake, stand-by power supply power supply state, is namely connected on breaker open operation in conventional electric power incoming line JX1, and is connected on stand-by power supply inlet wire JX2 and closes a floodgate, two points of states, are namely connected on breaker open operation in conventional electric power incoming line JX1, and are connected on stand-by power supply inlet wire JX2 separating brake.The concrete structure of common voltage sample circuit, standby voltage sample circuit can have various structures scheme, will describe in detail respectively below.

In order to make control module 2 can for convenience detach and install, the concrete structure of common voltage sample circuit of the present utility model preferably adopts scheme as shown in Figure 5, that is: described common voltage sample circuit comprises conventional A phase sampler circuit 21A, conventional B phase sampler circuit 21B, conventional C phase sampler circuit 21C, conventional N pole control circuit 21N, described conventional A phase sampler circuit 21A, conventional B phase sampler circuit 21B, conventional C phase sampler circuit 21C adopts the sample circuit of same structure, each sample circuit comprises combined resistance R1, electric capacity C101, amplifier U101, resistance R110, one end of the combined resistance R1 of same sample circuit, one end of electric capacity C101, one end and the amplifier U101 in-phase end U3 of resistance R110 are connected in parallel, the end of oppisite phase U2 of each amplifier U101 is connected with its output U1 short circuit, the positive pole of the power end of each amplifier U101 meets the DC power anode VCC of power module 1, the negative pole of the power end of each amplifier U101 connects the DC power supply earth polar of power module 1, the other end correspondence of each combined resistance R1 connects a phase line in the three-phase firewire of conventional electric power incoming line JX1, the other end of each electric capacity C101 is connected in parallel in the DC power supply earth polar of power module 1, the other end of each resistance R110 is connected in parallel in node GND1, the output U1 of each amplifier U101 is respectively to single-chip microcomputer output voltage signal.Described conventional N pole control circuit 21N comprises combined resistance R10, resistance R116, resistance R117, resistance R118, electric capacity C104, electric capacity C105, electric capacity C106, optocoupler U102, amplifier U101D, a pole of the one termination optocoupler U102 control output end of combined resistance R10, another termination of combined resistance R10 commonly uses the neutral line N1 of electric power incoming line JX1, one end of the positive pole connecting resistance R116 of the control input end of optocoupler U102, the other end of resistance R116 meets the signal output part OUT-N1 of single-chip microcomputer, the negative pole of the control input end of optocoupler U102 connects DC power supply earth polar, another pole of optocoupler U102 control output end, one end of electric capacity C106, the output U4 of amplifier U101D, the end of oppisite phase U6 of amplifier U101D is connected in parallel in node GND1, the DC power anode VCC of a termination power module 1 of resistance R117, the other end of resistance R117, one end of resistance R118, the positive pole of electric capacity C104, one end of electric capacity C105 is connected in parallel in the in-phase end of amplifier U101D, the other end of resistance R118, the negative pole of electric capacity C104, the other end of electric capacity C105, the other end of electric capacity C106 is connected in parallel in the DC power supply earth polar of power module 1.The other end correspondence of each combined resistance R1 connects a phase line in the three-phase firewire of conventional electric power incoming line JX1, namely refer to: another termination of the combined resistance R1 of conventional A phase sampler circuit 21A commonly uses a phase line A1 in the three-phase firewire of electric power incoming line JX1, another termination of the combined resistance R1 of conventional B phase sampler circuit 21B commonly uses a phase line B1 in the three-phase firewire of electric power incoming line JX1, and another termination of the combined resistance R1 of conventional C phase sampler circuit 21C commonly uses a phase line C1 in the three-phase firewire of electric power incoming line JX1.The output U1 of each amplifier U101 is respectively to single-chip microcomputer output voltage signal, namely: the output U1 of the amplifier U201 of conventional A phase sampler circuit 21A connects the AD-UA1 pin of the signals collecting end of single-chip microcomputer, the output U1 of the amplifier U101 of conventional B phase sampler circuit 21B connects the AD-UB1 pin of the signals collecting end of single-chip microcomputer, and the output U1 of the amplifier U101 of C phase sampler circuit 22C for subsequent use connects the AD-UC1 pin of the signals collecting end of single-chip microcomputer.

Be equally in order to make control module 2 can for convenience detach and install, the concrete structure of standby voltage sample circuit of the present utility model preferably adopts scheme as shown in Figure 6, that is: described standby voltage sample circuit comprises A phase sampler circuit 22A for subsequent use, B phase sampler circuit 22B for subsequent use, C phase sampler circuit 22C for subsequent use, standby N pole control circuit 22N, described A phase sampler circuit 22A for subsequent use, B phase sampler circuit 22B for subsequent use, C phase sampler circuit 22C for subsequent use adopts the sample circuit of same structure, each sample circuit comprises combined resistance R2, electric capacity C201, amplifier U201, resistance R210, one end of the combined resistance R2 of same sample circuit, one end of electric capacity C201, one end and the amplifier U201 in-phase end U3 of resistance R210 are connected in parallel, the end of oppisite phase U2 of each amplifier U201 is connected with its output U1 short circuit, the positive pole of the power end of each amplifier U201 meets the DC power anode VCC of power module 1, the negative pole of the power end of each amplifier U201 connects the DC power supply earth polar of power module 1, the other end correspondence of each combined resistance R2 connects a phase line in the three-phase firewire of stand-by power supply inlet wire JX2, the other end of each electric capacity C201 is connected in parallel in the DC power supply earth polar of power module 1, the other end of each resistance R210 is connected in parallel in node GND2, the output U1 of each amplifier U201 is respectively to single-chip microcomputer output voltage signal, described standby N pole control circuit 22N comprises combined resistance R20, resistance R216, resistance R217, resistance R218, electric capacity C204, electric capacity C205, electric capacity C206, optocoupler U202, amplifier U201D, a pole of the one termination optocoupler U202 control output end of combined resistance R20, the neutral line N2 of another termination stand-by power supply inlet wire JX2 of combined resistance R20, one end of the positive pole connecting resistance R216 of the control input end of optocoupler U202, the other end of resistance R216 meets the signal output part OUT-N2 of single-chip microcomputer, the negative pole of the control input end of optocoupler U202 connects DC power supply earth polar, another pole of optocoupler U202 control output end, one end of electric capacity C206, the output U4 of amplifier U201D, the end of oppisite phase U6 of amplifier U201D is connected in parallel in node GND2, the DC power anode VCC of a termination power module 1 of resistance R217, the other end of resistance R217, one end of resistance R218, the positive pole of electric capacity C204, one end of electric capacity C205 is connected in parallel in the in-phase end of amplifier U201D, the other end of resistance R218, the negative pole of electric capacity C204, the other end of electric capacity C205, the other end of electric capacity C206 is connected in parallel in the DC power supply earth polar of power module 1.The other end correspondence of each combined resistance R2 connects a phase line in the three-phase firewire of stand-by power supply inlet wire JX2, namely: a phase line A2 in the three-phase firewire of another termination stand-by power supply inlet wire JX2 of the combined resistance R2 of A phase sampler circuit 22A for subsequent use, a phase line C2 in the three-phase firewire of another termination stand-by power supply inlet wire JX2 of the combined resistance R2 of a phase line B2 in the three-phase firewire of another termination stand-by power supply inlet wire JX2 of the combined resistance R2 of B phase sampler circuit 22B for subsequent use, C phase sampler circuit 22C for subsequent use.The output U1 of each amplifier U201 is respectively to single-chip microcomputer output voltage signal, namely: the output U1 of the amplifier U201 of A phase sampler circuit 22A for subsequent use connects the AD-UA2 pin of the signals collecting end of single-chip microcomputer, the output U1 of the amplifier U201 of B phase sampler circuit 22B for subsequent use connects the AD-UB2 pin of the signals collecting end of single-chip microcomputer, and the output U1 of the amplifier U201 of C phase sampler circuit 22C for subsequent use connects the AD-UC2 pin of the signals collecting end of single-chip microcomputer.

The concrete structure of the standby N pole control circuit 22N shown in conventional N pole control circuit 21N and Fig. 6 shown in Fig. 5, be only one preferred embodiment, object be prevent from occurring between conventional power supply and stand-by power supply by the short circuit of N pole, certainly other execution mode is not got rid of, but no matter adopt which kind of concrete structure, preferred structure of the present utility model adopts optocoupler control principle (as Fig. 5, optocoupler U102 shown in Fig. 6, optocoupler U202), that is: described common voltage sample circuit comprises optocoupler U102, the signal output part OUT-N1 of described single-chip microcomputer controls optocoupler U102 ON/OFF, to control the connection/disjunction of conventional power supply N pole, described standby voltage sample circuit comprises optocoupler U202, and the signal output part OUT-N2 of described single-chip microcomputer controls optocoupler U202 ON/OFF, to control the connection/disjunction of conventional power supply N pole, described single-chip microcomputer is in optocoupler U102 conducting and after optocoupler U202 disconnects, then to be sampled to conventional electric power incoming line JX1 by common voltage sample circuit, or described single-chip microcomputer after optocoupler U102 disconnects also optocoupler U202 conducting, then is sampled to stand-by power supply inlet wire JX2 by standby voltage sample circuit.

Each of shown in Fig. 5 a three combined resistance R1 is all formed in the mode of resistance R101, resistance R102, resistance R103 tandem compound, but combined resistance R1 of the present utility model is not limited to this compound mode, it can be alternate manner, have and can realize resistance step-down, amplifier high resistant isolation features, and can be the resistance combination of the resistance value of adapt voltages by the voltage bias of the in-phase end U3 of amplifier U101.In like manner, combined resistance R10 shown in Fig. 5 is formed in the mode of resistance R113, resistance R114, resistance R115 tandem compound, but combined resistance R10 of the present utility model is not limited to this compound mode, it can be alternate manner, have and can realize resistance step-down, amplifier high resistant isolation features, and can be the resistance combination of the resistance value of adapt voltages by the voltage bias of the control output end of optocoupler U102.In like manner, each of shown in Fig. 6 a three combined resistance R2 is all formed in the mode of resistance R201, resistance R202, resistance R203 tandem compound, but combined resistance R2 of the present utility model is not limited to this compound mode, it can be alternate manner, have and can realize resistance step-down, amplifier high resistant isolation features, and can be the resistance combination of the resistance value of adapt voltages by the voltage bias of the in-phase end U3 of amplifier U101.In like manner, combined resistance R20 shown in Fig. 6 is formed in the mode of resistance R213, resistance R214, resistance R215 tandem compound, but combined resistance R20 of the present utility model is not limited to this compound mode, it can be alternate manner, have and can realize resistance step-down, amplifier high resistant isolation features, and can be the resistance combination of the resistance value of adapt voltages by the voltage bias of the control output end of optocoupler U202.As previously mentioned, voltage sampling circuit of the present utility model be a kind of resistance step-down, amplifier high-barrier from sample circuit, and single-chip microcomputer output control signal OUT-N1 controls optocoupler U102 conducting and disconnection, thus control the whether conducting of conventional power supply N pole, single-chip microcomputer determines whether, to conventional power supply or the sampling of stand-by power supply inlet wire, to avoid conventional power supply and stand-by power supply by the short circuit of N pole again.Simultaneously, the secondary of N pole isolation optocoupler U2 02 also provides the DC reference voltage be made up of resistance R2 17, R2 18, electric capacity C2 04 ~ C2 06, amplifier U2 01D, when optocoupler U2 02 conducting, A, B, C three-phase voltage signal is raised as direct current signal by optocoupler U2 02 by DC reference voltage, is beneficial to single-chip microcomputer sampling and carries out A/D conversion (see Fig. 6).

Can change easily to make control module 2, a kind of available scheme is as shown in Figure 3, Figure 5 and Figure 6: described control module 2 also comprise is connected with common voltage sample circuit conventional acquisition interface J201, commonly use gathering line 201, the acquisition interface J202 for subsequent use be connected with standby voltage sample circuit and gathering line for subsequent use 202, conventional gathering line 201 is connected between conventional electric power incoming line JX1 and conventional acquisition interface J201 in pluggable mode, and gathering line 202 for subsequent use is connected between stand-by power supply inlet wire JX2 and acquisition interface J202 for subsequent use in pluggable mode.Described control module 2 also comprise be connected with relay drive circuit executive's interface J203, perform connecting line 203, the detection interface J204 be connected with position detecting circuit and detect connecting line 204, performing connecting line 203 is connected between the performance element 501 of Switch main body 5 and executive's interface J203 in pluggable mode, detects connecting line 204 and is connected in pluggable mode between the detecting unit 502 of Switch main body 5.Obviously, by conventional acquisition interface J201, conventional gathering line 201, acquisition interface J202 for subsequent use, gathering line 202 for subsequent use, executive's interface J203, perform connecting line 203, detect the form of interface J204 and detection connecting line 204, can make control module 2 can with this module beyond all modules or electrical equipment realize grafting easily, certainly, realization can grafting easily, not only need the support of plug-in outlet structure, and also need the support of the circuit structure of control module 2, that is, each circuit that control module 2 of the present utility model adopts, can guarantee that plug can not bring safety problem.

See Fig. 1,3,4; the power module 1 be independently arranged on Switch main body 5 provides DC power supply for each module to controller; certainly do not get rid of and provide DC power supply to other electric elements on Switch main body 5, it comprises protective circuit 101, transforming circuit 102 and rectification and indicating circuit 103.The physical circuit principle of power module 1 is see Fig. 4, protective circuit 101 gets two single-phase AC voltages from the conventional electric power incoming line JX1 of automatic change-over and stand-by power supply inlet wire JX2 respectively, through common mode choke L401, L402, filter capacitor C403, C404, protective tube F401, F402, piezo-resistance RV401, the protective circuit of RV402 composition carries out EMC protection, overvoltage protection, surge protection, again through transformer 102, 10 2 step-down process respectively, by the rectifier bridge DB 1 01 of rectification and indicating circuit 103, after DB 1 02 rectification, electric capacity C401 after filtering again, C402 filtering exports the direct voltage to each module for power supply of switch controller of power supply, output has the indicating circuit (see Fig. 4) be made up of resistance R401 and light-emitting diode H401 simultaneously.Should understand, the DC power supply that power module 1 provides comprises DC power anode VCC and DC power supply earth polar, according to the voltage request of the electronic devices and components in each circuit, known means can be adopted from dividing potential drop DC power anode VCC, as separated the adapt voltages EVCC (see Fig. 6) of the driving chip U301 of display module 3; Where necessary, power module 1 also can provide alternating voltage by the AC power supply jack J402 of redundancy as shown in Figure 3.

Power module 1 has multiple implementation; the particular circuit configurations of preferred mode protective circuit 101 as shown in Figure 3 and Figure 4, transforming circuit 102 and rectification and indicating circuit 103: described protective circuit 101 comprises common mode choke L401, common mode choke L402, filter capacitor C403, filter capacitor C404, protective tube F401, a protective tube F402, piezo-resistance RV401, piezo-resistance RV402.The neutral pole N1 of the input of common mode choke L401, phase line pole A1 meets the neutral line N1 of conventional electric power incoming line JX1 respectively, a phase line A1 in three-phase firewire, the neutral pole N10 of the output of common mode choke L401 is the first neutral output stage N1 ' of protective circuit 101, protective tube F401 is connected in series between the live wire electrode A10 of the output of common mode choke L401 and the first live wire output stage A1 ' of this protective circuit 101, filter capacitor C403 is connected in parallel between live wire electrode A10 and neutral pole N10, piezo-resistance RV401 is connected in parallel between the first live wire output stage A1 ' and the first neutral output stage N1 '.In like manner, the neutral pole N2 of the input of common mode choke L402, phase line pole A2 meets the neutral line N2 of stand-by power supply inlet wire JX2 respectively, a phase line A2 in three-phase firewire, the neutral pole N20 of the output of common mode choke L402 is the second neutral output stage N2 ' of protective circuit 101, protective tube F402 is connected in series between the live wire electrode A20 of the output of common mode choke L402 and the second live wire output stage A2 ' of this protective circuit 101, filter capacitor C404 is connected in parallel between live wire electrode A20 and neutral pole N20, piezo-resistance RV402 is connected in parallel between the second live wire output stage A2 ' and the second neutral output stage N2 '.Described transforming circuit 102 comprises transformer T401 and transformer T402; two inputs of transformer T401 are connected with the first live wire output stage A1 ', the first neutral output stage N1 ' of protective circuit 101 respectively, and two inputs of transformer T402 are connected with the second live wire output stage A2 ', the second neutral output stage N2 ' of protective circuit 101 respectively.Described rectification and indicating circuit 103 comprise rectifier bridge DB401, rectifier bridge DB402, electric capacity C401, electric capacity C402, resistance R401, light-emitting diode H401, two ac input end Z11 of rectifier bridge DB401, Z13 is connected with two inputs of the transformer T401 of transforming circuit 102 respectively, two ac input end Z21 of rectifier bridge DB402, Z23 is connected with two inputs of the transformer T402 of transforming circuit 102 respectively, the direct current output cathode Z12 of rectifier bridge DB401 and the direct current output cathode Z22 of rectifier bridge DB402 is connected in parallel, form the DC power anode VCC of power module 1, the direct current output negative pole Z14 of rectifier bridge DB401 and the direct current output negative pole Z24 of rectifier bridge DB402 is connected in parallel, form the DC power supply earth polar of power module 1, electric capacity C401 and electric capacity C402 is connected in parallel between the DC power anode VCC of power module 1 and DC power supply earth polar respectively, resistance R401 and light-emitting diode H401 be connected in series formed two ends respectively with DC power anode VCC, DC power supply earth polar connects.

Can change easily to make power module 1; a kind of available scheme is as shown in 3 and Fig. 4; described power module 1 also comprises power input interface J401 and two power line 401; wherein one is connected between conventional electric power incoming line JX1 and power input interface J401 in pluggable mode; and another is connected between stand-by power supply inlet wire JX2 and power input interface J401 in pluggable mode, protective circuit 101 is respectively from power input interface J401 power taking.Described power module 1 also comprises power output interface J403 and electric power connection line 403, power output interface J403 is connected with rectification and indicating circuit 103, electric power connection line 403 is connected between power output interface J403 and other electricity consumption module (as the DC/DC change-over circuit of control module 2, the drive circuit of display module 3) in pluggable mode, thinks the DC power anode VCC of DC power supply needed for control module 2, the DC power anode EVCC needed for display module 3 that each electricity consumption module provides adaptive.When being necessary, described power module 1 also can arrange AC power supply jack J402, and AC power supply jack J402 is from the first live wire output stage A1 ' of protective circuit 101 and the second live wire output stage A2 ' extraction alternating voltage.Obviously, by the form of power input interface J401 and power line 401, power output interface J403 and electric power connection line 403, AC power supply jack J402, external all electrical equipment of power module 1 can be made to connect and can realize grafting easily.

The utility model adopts and comprises protective circuit, the power module be independently arranged on Switch main body of transforming circuit and rectification and indicating circuit, employing comprises single-chip microcomputer, DC/DC change-over circuit, common voltage sample circuit, standby voltage sample circuit, position detecting circuit, relay drive circuit, the control module be independently arranged on Switch main body of interactive interface and communicating circuit, and employing comprises drive circuit, key circuit, the display module be independently arranged on Switch main body of display screen and connecting line, the controling appliance of the power automatic transfer switch provided according to the utility model is made to have following significant technique effect: one is reduce controller volume, and controller can better be coordinated with automatic change-over, two is that display module both can integrally be installed, also can partial installation, three is that can change module, controller is easy to maintenance at once if any one module goes wrong in the controller of modularized design, four is instead of original current transformer sample mode with sampling resistor step-down sample circuit, solves the problem that controller can not be split and cost is high.It is understood that above-described embodiment is just to explanation of the present utility model, instead of to restriction of the present utility model, any innovation and creation do not exceeded in the utility model spirit, all fall within protection range of the present utility model.

Claims (10)

1. the controller of a power automatic transfer switch, it is characterized in that: described controller comprises the power module (1) be independently arranged on Switch main body (5), control module (2) and display module (3), wherein:

Described power module (1) comprises protective circuit (101), transforming circuit (102) and rectification and indicating circuit (103), described protective circuit (101) gets single-phase AC voltage from conventional electric power incoming line JX1 and stand-by power supply inlet wire JX2 respectively, and the voltage transitions after described transforming circuit (102) respectively transformation is the direct voltage of each module for power supply to described controller by described rectification and indicating circuit (103);

Described control module (2) comprises single-chip microcomputer, DC/DC change-over circuit, common voltage sample circuit, standby voltage sample circuit, position detecting circuit, relay drive circuit, interactive interface and communicating circuit, described common voltage sample circuit, standby voltage sample circuit is respectively from conventional electric power incoming line JX1, stand-by power supply inlet wire JX2 gathers voltage signal, described position detecting circuit gathers switch position signal from Switch main body (5), described single-chip microcomputer is by the described voltage signal collected, switch position signal and from described interactive interface and communicating circuit input data carry out judgements process, and the relay drive circuit described in controlling according to result performs the automatic conversion operations of power supply of Switch main body (5), result is exported by described interactive interface and communicating circuit simultaneously,

Described display module (3) comprises drive circuit, key circuit, the connecting line (4) between display screen and the interactive interface being connected to this drive circuit and described control module (2) in pluggable mode of button and display, the signal that described key circuit is keyed in, by being input to the interactive interface of described control module (2) after this drive circuit process through described connecting line (4), exports to described display screen display by connecting line (4) after the signal transacting that the interactive interface transmitted is exported by described drive circuit.

2. the controller of power automatic transfer switch according to claim 1, is characterized in that:

The common voltage sample circuit of described control module (2) comprises conventional A phase sampler circuit 21A, conventional B phase sampler circuit 21B, conventional C phase sampler circuit 21C and conventional N pole control circuit 21N;

Described conventional A phase sampler circuit 21A, conventional B phase sampler circuit 21B, conventional C phase sampler circuit 21C adopts the sample circuit of same structure, each sample circuit comprises combined resistance R1, electric capacity C101, amplifier U101 and resistance R110, one end of the combined resistance R1 of same sample circuit, one end of electric capacity C101, one end of resistance R110 and the in-phase end U3 of amplifier U101 are connected in parallel, the end of oppisite phase U2 of each amplifier U101 is connected with its output U1 short circuit, the positive pole of the power end of each amplifier U101 meets the DC power anode VCC of power module (1), the negative pole of the power end of each amplifier U101 connects the DC power supply earth polar of power module (1), the other end correspondence of each combined resistance R1 connects a phase line in the three-phase firewire of conventional electric power incoming line JX1, the other end of each electric capacity C101 is connected in parallel in the DC power supply earth polar of power module (1), the other end of each resistance R110 is connected in parallel in node GND1, the output U1 of each amplifier U101 is respectively to single-chip microcomputer output voltage signal,

Described conventional N pole control circuit 21N comprises combined resistance R10, resistance R116, resistance R117, resistance R118, electric capacity C104, electric capacity C105, electric capacity C106, optocoupler U102 and amplifier U101D, a pole of the control output end of the one termination optocoupler U102 of combined resistance R10, another termination of combined resistance R10 commonly uses the neutral line N1 of electric power incoming line JX1, one end of the positive pole connecting resistance R116 of the control input end of optocoupler U102, the other end of resistance R116 meets the signal output part OUT-N1 of single-chip microcomputer, the negative pole of the control input end of optocoupler U102 connects DC power supply earth polar, another pole of the control output end of optocoupler U102, one end of electric capacity C106, the output U4 of amplifier U101D, the end of oppisite phase U6 of amplifier U101D is connected in parallel in node GND1, the DC power anode VCC of a termination power module (1) of resistance R117, the other end of resistance R117, one end of resistance R118, the positive pole of electric capacity C104, one end of electric capacity C105 is connected in parallel in the in-phase end of amplifier U101D, the other end of resistance R118, the negative pole of electric capacity C104, the other end of electric capacity C105, the other end of electric capacity C106 is connected in parallel in the DC power supply earth polar of power module (1).

3. the controller of power automatic transfer switch according to claim 1, is characterized in that:

The standby voltage sample circuit of described control module (2) comprises A phase sampler circuit 22A for subsequent use, B phase sampler circuit 22B for subsequent use, C phase sampler circuit 22C for subsequent use and standby N pole control circuit 22N;

Described A phase sampler circuit 22A for subsequent use, B phase sampler circuit 22B for subsequent use, C phase sampler circuit 22C for subsequent use adopts the sample circuit of same structure, each sample circuit comprises combined resistance R2, electric capacity C201, amplifier U201 and resistance R210, one end of the combined resistance R2 of same sample circuit, one end of electric capacity C201, one end of resistance R210 and the in-phase end U3 of amplifier U201 are connected in parallel, the end of oppisite phase U2 of each amplifier U201 is connected with its output U1 short circuit, the positive pole of the power end of each amplifier U201 meets the DC power anode VCC of power module (1), the negative pole of the power end of each amplifier U201 connects the DC power supply earth polar of power module (1), the other end correspondence of each combined resistance R2 connects a phase line in the three-phase firewire of stand-by power supply inlet wire JX2, the other end of each electric capacity C201 is connected in parallel in the DC power supply earth polar of power module (1), the other end of each resistance R210 is connected in parallel in node GND2, the output U1 of each amplifier U201 is respectively to single-chip microcomputer output voltage signal,

Described standby N pole control circuit 22N comprises combined resistance R20, resistance R216, resistance R217, resistance R218, electric capacity C204, electric capacity C205, electric capacity C206, optocoupler U202 and amplifier U201D, a pole of the control output end of the one termination optocoupler U202 of combined resistance R20, the neutral line N2 of another termination stand-by power supply inlet wire JX2 of combined resistance R20, one end of the positive pole connecting resistance R216 of the control input end of optocoupler U202, the other end of resistance R216 meets the signal output part OUT-N2 of single-chip microcomputer, the negative pole of the control input end of optocoupler U202 connects DC power supply earth polar, another pole of optocoupler U202 control output end, one end of electric capacity C206, the output U4 of amplifier U201D, the end of oppisite phase U6 of amplifier U201D is connected in parallel in node GND2, the DC power anode VCC of a termination power module (1) of resistance R217, the other end of resistance R217, one end of resistance R218, the positive pole of electric capacity C204, one end of electric capacity C205 is connected in parallel in the in-phase end of amplifier U201D, the other end of resistance R218, the negative pole of electric capacity C204, the other end of electric capacity C205, the other end of electric capacity C206 is connected in parallel in the DC power supply earth polar of power module (1).

4. the controller of power automatic transfer switch according to claim 1, is characterized in that:

The common voltage sample circuit of described control module (2) comprises optocoupler U102, and the output signal OUT-N1 of described single-chip microcomputer controls optocoupler U102 ON/OFF, to control the connection/disjunction of conventional power supply N pole;

The standby voltage sample circuit of described control module (2) comprises optocoupler U202, and the output signal OUT-N2 of described single-chip microcomputer controls optocoupler U202 ON/OFF, to control the connection/disjunction of conventional power supply N pole;

Described single-chip microcomputer is in optocoupler U102 conducting and after optocoupler U202 disconnects, then to be sampled to conventional electric power incoming line JX1 by common voltage sample circuit; Or described single-chip microcomputer after optocoupler U102 disconnects also optocoupler U202 conducting, then is sampled to stand-by power supply inlet wire JX2 by standby voltage sample circuit.

5. the controller of power automatic transfer switch according to claim 1, is characterized in that:

The button of described display module (3) and the drive circuit of display comprise driving chip U301, resistance R301, resistance R302, resistance R303, electric capacity C303, electric capacity C304 and electric capacity C305, one end of resistance R301, one end of electric capacity C303 is connected in parallel in the D10 pin of driving chip U301, one end of resistance R302, one end of electric capacity C304 is connected in parallel in the CLK pin of driving chip U301, one end of resistance R303, one end of electric capacity C305 is connected in parallel in the STB pin of driving chip U301, the other end of resistance R301, the other end of resistance R302, the other end of resistance R303 and the VDD pin of driving chip U301 are connected in parallel, with adapt voltages EVCC, the other end of electric capacity C303, the other end of electric capacity C304, the other end of electric capacity C305, the GND pin of driving chip U301 is connected in parallel in the DC power supply earth polar of power module (1),

Described key circuit comprises automatic/hand button SW301, button SW303 is set, inquire button SW305, conventional button SW302, emergency button SW304 and two points of button SW306, one end of automatic/hand button SW301, one end of conventional button SW302 is connected in parallel in the SEG1 pin of driving chip U301, one end of button SW303 is set, one end of emergency button SW304 is connected in parallel in the SEG2 pin of driving chip U301, one end of inquire button SW305, one end of two points of button SW306 is connected in parallel in the SEG3 pin of driving chip U301, the other end of automatic/hand button SW301, the other end of button SW303 is set, the other end of inquire button SW305 is connected in parallel in the KEY1 pin of driving chip U301, the other end of conventional button SW302, the other end of emergency button SW304, the other end of two points of button SW306 is connected in parallel in the KEY2 pin of driving chip U301.

6. the controller of power automatic transfer switch according to claim 1, is characterized in that:

The protective circuit (101) of described power module (1) comprises the common mode choke L401 meeting conventional electric power incoming line JX1, meet the common mode choke L402 of stand-by power supply inlet wire JX2, the neutral pole N1 of the input of described common mode choke L401, phase line pole A1 meets the neutral line N1 of conventional electric power incoming line JX1 respectively, a phase phase A1 in three-phase firewire, the neutral pole N10 of the output of common mode choke L401 is the first neutral output stage N1 ' of protective circuit (101), protective tube F401 is connected in series between the live wire electrode A10 of the output of common mode choke L401 and the first live wire output stage A1 ' of this protective circuit (101), filter capacitor C403 is connected in parallel between live wire electrode A10 and neutral pole N10, piezo-resistance RV401 is connected in parallel between the first live wire output stage A1 ' and the first neutral output stage N1 ', the neutral pole N2 of the input of described common mode choke L402, phase line pole A2 meets the neutral line N2 of stand-by power supply inlet wire JX2 respectively, a phase line A2 in three-phase firewire, the neutral pole N20 of the output of common mode choke L402 is the second neutral output stage N2 ' of protective circuit (101), protective tube F402 is connected in series between the live wire electrode A20 of the output of common mode choke L402 and the second live wire output stage A2 ' of this protective circuit (101), filter capacitor C404 is connected in parallel between live wire electrode A20 and neutral pole N20, piezo-resistance RV402 is connected in parallel between the second live wire output stage A2 ' and the second neutral output stage N2 '.

7. the controller of power automatic transfer switch according to claim 6, is characterized in that:

The transforming circuit (102) of described power module (1) comprises transformer T401 and transformer T402, two inputs of transformer T401 are connected with the first live wire output stage A1 ', the first neutral output stage N1 ' of protective circuit (101) respectively, and two inputs of transformer T402 are connected with the second live wire output stage A2 ', the second neutral output stage N2 ' of protective circuit (101) respectively;

Rectification and the indicating circuit (103) of described power module (1) comprise rectifier bridge DB401, rectifier bridge DB402, be connected in the electric capacity C401 between the DC power anode VCC of power module (1) and DC power supply earth polar respectively in parallel, electric capacity C402, the resistance R401 be connected in series and light-emitting diode H401, two ac input end (Z11 of rectifier bridge DB401, Z13) be connected with two inputs of the transformer T401 of transforming circuit (102) respectively, two ac input end (Z21 of rectifier bridge DB402, Z23) be connected with two inputs of the transformer T402 of transforming circuit (102) respectively, the direct current output cathode Z12 of rectifier bridge DB401 and the direct current output cathode Z22 of rectifier bridge DB402 is connected in parallel, form the DC power anode VCC of power module (1), the direct current output negative pole Z14 of rectifier bridge DB401 and the direct current output negative pole Z24 of rectifier bridge DB402 is connected in parallel, form the DC power supply earth polar of power module (1), the two ends that described resistance R401 and light-emitting diode H401 is connected in series formation respectively with DC power anode VCC, DC power supply earth polar connects.

8. the controller of power automatic transfer switch according to claim 1, it is characterized in that: described power module (1) also comprises power input interface J401 and two power line (401), wherein one is connected between conventional electric power incoming line JX1 and power input interface J401 in pluggable mode, another is connected between stand-by power supply inlet wire JX2 and power input interface J401 in pluggable mode, and described protective circuit (101) is respectively from power input interface J401 power taking; Described power module (1) also comprises power output interface J403 and electric power connection line (403), power output interface J403 is connected with rectification and indicating circuit (103), and electric power connection line (403) is connected between power output interface J403 and control module (2) in pluggable mode.

9. the controller of power automatic transfer switch according to claim 1, it is characterized in that: described control module (2) also comprises the conventional acquisition interface J201 be connected with common voltage sample circuit, conventional gathering line (201), the acquisition interface J202 for subsequent use be connected with standby voltage sample circuit and gathering line for subsequent use (202), conventional gathering line (201) is connected between conventional electric power incoming line JX1 and conventional acquisition interface J201 in pluggable mode, gathering line for subsequent use (202) is connected between stand-by power supply inlet wire JX2 and acquisition interface J202 for subsequent use in pluggable mode.

10. the controller of power automatic transfer switch according to claim 1, it is characterized in that: described control module (2) also comprises the executive's interface J203 be connected with relay drive circuit, perform connecting line (203), the detection interface J204 be connected with position detecting circuit and detect connecting line (204), performing connecting line (203) is connected between the performance element (501) of Switch main body (5) and executive's interface J203 in pluggable mode, detect connecting line (204) to be connected in pluggable mode between the detecting unit (502) of Switch main body (5).