CN202183634U

CN202183634U - Controller of change-over switch

Info

Publication number: CN202183634U
Application number: CN2011202687068U
Authority: CN
Inventors: 褚文; 顾怡文
Original assignee: Changshu Switchgear Manufacturing Co Ltd
Current assignee: Changshu Switchgear Manufacturing Co Ltd
Priority date: 2011-07-27
Filing date: 2011-07-27
Publication date: 2012-04-04
Anticipated expiration: 2021-07-27

Abstract

A controller of a change-over switch belongs to the technical field of switch accessories, and comprises a power circuit, a voltage signal converting circuit, a keyboard circuit, a switch position detecting circuit, a power selecting circuit, an executing unit, a display circuit, a CPU (central processing unit) circuit and a communication unit, wherein the power circuit is connected with a commonly used power supply and a standby power supply, so as to be used for supplying power to each circuit, the CPU circuit is connected with the voltage signal converting circuit, the keyboard circuit, the switch position detecting circuit, the power selecting circuit, the executing unit, the display circuit and the communication unit, the voltage signal converting circuit is connected with the commonly used power supply and the standby power supply, the switch position detecting circuit is connected with state signals of the change-over switch, the power selecting circuit is connected with the commonly used power supply, the standby power and the change-over switch, the executing unit is connected with the change-over switch, and the communication unit is connected with a remote control. The controller has the advantages of being higher in function, simple in structure, high in reliability and lower in cost.

Description

A kind of controller of change over switch

Technical field

The utility model relates to a kind of controller of change over switch, belongs to switch attachment technique field

Background technology

along with development of science and technology, the popularizing of automaticity, people to power supply reliability require increasingly high.In the electric power system in modern times, adopt the dual power supply pattern of power supply power supply commonly used and stand-by power supply power supply usually.So-called power supply commonly used is electric network source; And so-called stand-by power supply is the power supply that substitutes electric network source, the power supply of supplying with like the power generating equipment of diesel engine generator and so on.The equipment that power supply commonly used and stand-by power supply are switched is commonly called change over switch; When power supply catastrophic failure commonly used or power failure; Switch to the stand-by power supply power supply through change over switch; When using power up always, switch to power supply power supply commonly used through change over switch once more, realize uninterrupted power supply thus to load.

transfer switch is seen from structure; Can also can form by 2 contactor assembly units by different constituted modes by 2 circuit breakers; Correspondingly; Its control mode also has different types, and traditional method is that the contact signal with change over switch is connected with various relays, contactor, accomplishes task switching through the electrical interlocking conversion of physics; Progress along with science and technology; Nowadays more common application process is that the contact signal with change over switch is linked into the single-chip microcomputer is in the digital circuit of core; Through being the logical operation of the digital circuit of core with the single-chip microcomputer, will controlling the result and output to various relays and accomplish task switching.Wherein, with the single-chip microcomputer be the digital circuit of core because peripheral circuit is less, and circuit is simple, man-machine interface is friendly, applied range becomes the main flow in market.Therefore, design that a function is stronger, simple in structure, reliability is high, lower-cost be that the controller of the change over switch of core is necessary with the single-chip microcomputer

Summary of the invention

The task of the utility model is to provide that a kind of function is stronger, simple in structure, reliability is high, the controller of lower-cost change over switch.

The task of the utility model is accomplished like this; A kind of controller of change over switch; It is characterized in that: comprise power circuit, voltage signal change-over circuit, keyboard circuit, position of the switch testing circuit, power selection circuit, performance element, display circuit, cpu circuit and communication unit; Power circuit is connected with stand-by power supply with power supply commonly used; Each circuit is given in power supply, and said cpu circuit is connected with communication unit with voltage signal change-over circuit, keyboard circuit, position of the switch testing circuit, power selection circuit, performance element, display circuit, and the voltage signal change-over circuit is connected with stand-by power supply with power supply commonly used; Position of the switch testing circuit is connected with the status signal of change over switch; Power selection circuit is connected with power supply commonly used, stand-by power supply and change over switch, and performance element is connected with change over switch, and communication unit is connected with remote monitoring.

described power circuit of the utility model comprises single-phase two winding transformer T1, T3, bridge heap B1, B3, three-terminal voltage-stabilizing chip U1, U2; The primary coil of single-phase two winding transformer T1, T3 meets two lead-in wire 2L1, the 2N of two lead-in wire 1L1,1N and stand-by power supplies of power supply commonly used respectively; Secondary coil connects the input of bridge heap B1, B3 respectively; One end of the output of bridge heap B1 is held with the Vin that meets three-terminal voltage-stabilizing chip U1 after an end of the output of bridge heap B3 is connected; The Vout of three-terminal voltage-stabilizing chip U1 holds output DC source+12V and is connected with the Vin end of three-terminal voltage-stabilizing chip U2; Vout end output DC source+5V of three-terminal voltage-stabilizing chip U2, the GND end common ground of the other end, three-terminal voltage-stabilizing chip U1 and the U2 of the output of bridge heap B1, B3.

The described voltage signal change-over circuit of the utility model comprises transformer T2, T4, bridge heap B2, B4, resistance R 1, R2, R27, R28 and amplifier U3A, U3B; The primary coil of transformer T2, T4 meets two inlet wire 2L1, the 2N of two inlet wire 1L1,1N and the stand-by power supply of power supply commonly used respectively; The secondary coil of transformer T2, T4 connects the input of bridge heap B2, B4 respectively; One end of the output of bridge heap B2 is connected with an end of resistance R 1; The other end of resistance R 1 is connected with an end of resistance R 2 and the inverting input of amplifier U3A; Positive supply input termination DC power supply+5V of amplifier U3A; 50 pin of little process chip IC in the output termination cpu circuit of amplifier U3A, an end of the output of bridge heap B4 is connected with an end of resistance R 27, and the other end of resistance R 27 is connected with an end of resistance R 28 and the inverting input of amplifier U3B; 51 pin of little process chip IC in the output termination cpu circuit of amplifier U3B, the other end, amplifier U3A, the normal phase input end of U3B and the negative supply input common ground of amplifier U3A of the output of bridge heap B2, B4.

described keyboard circuit of the utility model comprises resistance R 3～R8, button 1S1～1S6; The end of resistance R 3～R8 is connected with 41～46 pin of microprocessor chip IC in the cpu circuit respectively successively with after the end of button 1S1～1S6 is connected; The other end of resistance R 3～R8 meets DC power supply+5V jointly, the other end common ground of button 1S1～1S6.

described position of the switch of the utility model testing circuit comprises optocoupler G1, resistance R 9 and R10; One end of the input of optocoupler G1 is connected with an end of resistance R 9 and resistance R 10; The other end of resistance R 9 connects the status signal of conversion switch; Direct power supply+the 12V of another termination of resistance R 10,48 pin of little process chip IC in the termination cpu circuit of the output of optocoupler G1, the other end common ground of the other end of the input of optocoupler G1 and output.

described power selection circuit of the utility model comprises resistance R 11, R12, triode Q1, Q2 and relay K A1～KA4; The end of resistance R 11, R12 connects 53 pin and 55 pin of little process chip IC in the cpu circuit respectively; The other end of resistance R 11, R12 connects the base stage of triode Q1, Q2 respectively; The emitter of triode Q1, Q2 is succeeded an end of the coil of electrical equipment KA1, KA2 respectively; The collector electrode of triode Q1, Q2 meets DC power supply+12V; Normally opened contact in first pair of fixed contact of the inlet wire 1L1 end of power supply commonly used and first moving contact of relay K A1 and relay K A3 is connected; The inlet wire 1N end of power supply commonly used is connected with an end of the coil of relay K A3 and the 4th moving contact of relay K A3; Normally opened contact in second moving contact of the inlet wire 2L1 of stand-by power supply end and relay K A1 and the 4th pair of fixed contact of relay K A4 is connected; The inlet wire 2N end of stand-by power supply is connected with an end of the coil of first moving contact of relay K A4 and relay K A4; Be connected to change over switch behind the normally-closed contact in normally-closed contact in the 3rd pair of fixed contact of the lead-in wire L connection relay K A3 of said power selection circuit and the 3rd pair of fixed contact of relay K A4; The lead-in wire N of said power selection circuit is connected to change over switch after connecting the normally opened contact in first pair of fixed contact of normally opened contact and relay K A4 in the 4th pair of fixed contact of relay K A3, go between L, N and change switch and be connected, and first fixed contact of relay K A1 is connected with first moving contact with second moving contact of relay K A2 respectively with second fixed contact; First fixed contact of relay K A2 is connected with second moving contact of relay K A3; Second fixed contact of relay K A2 is connected with second moving contact of relay K A4, and first moving contact of relay K A3 is connected with the 3rd moving contact of relay K A4, and the 3rd moving contact of relay K A3 is connected with the 4th moving contact of relay K A4; Normally-closed contact in second pair of fixed contact of relay K A3 is connected with the other end of the coil of relay K A4; Normally-closed contact in second pair of fixed contact of the other end of the coil of relay K A3 and relay K A4 is connected, and other contacts in four pairs of fixed contacts of relay K A3 and relay K A4 are all unsettled, the other end common ground of the coil of relay K A1 and relay K A2.

described performance element of the utility model comprises resistance R 13～R16, triode Q3～Q6, relay K A5～KA8; The end of resistance R 13～R16 connects 57 pin, 58 pin, 59 pin and 60 pin of little process chip IC in the cpu circuit respectively; The other end of resistance R 13～R16 connects the base stage of triode Q3～Q6 respectively; The emitter of triode Q3～Q6 is succeeded an end of the coil of electrical equipment KA5～KA8 respectively; First moving contact of relay K A5 and the U-S1 end that connects the conversion switch after first moving contact of relay K A6 is connected; Second moving contact of relay K A5 with meet DC power supply+12V after second moving contact of relay K A7 is connected; Second fixed contact of relay K A5 is connected with second moving contact of the collector electrode of triode Q4 and relay K A8; Second moving contact of relay K A6 is connected with the collector electrode of second fixed contact of relay K A7 and triode Q6, and second fixed contact of relay K A6 is connected with the collector electrode of triode Q3, first moving contact of relay K A7 and the R-S1 pin that connects the conversion switch after first moving contact of relay K A8 is connected; Second fixed contact of relay K A8 is connected with the collector electrode of triode Q5, and first fixed contact of relay K A5～KA8 connects U-S2 end, U-S4 end, R-S2 end and the R-S4 end of conversion switch respectively.

described display circuit of the utility model comprises first display circuit and second display circuit; Wherein, First display circuit comprises power supply chip U4, liquid crystal panel LCD, resistance R 17～R20, inductance L 1, diode D1, electrochemical capacitor E1 and triode Q7; 62 pin of little process chip IC in the one termination cpu circuit of resistance R 20; The other end of resistance R 20 is connected with the base stage of triode Q7; The emitter of triode Q7 is connected with the LED+ pin of liquid crystal panel LCD; The DB7 of liquid crystal panel LCD～DB0 pin, C/D pin, CE pin, RD pin, WR pin connect 63～70 pin, 71 pin, 72 pin, 73 pin, 74 pin of little process chip IC in the cpu circuit respectively; One end of resistance R 19 and the positive pole of electrochemical capacitor E1 and liquid crystal panel LCD /the RST pin is connected; The other end of resistance R 19 with meet DC power supply+5V after the VDD pin of liquid crystal panel LCD is connected, meet DC power supply-9V after the OUT pin of the V0 pin of the positive pole of diode D1 and liquid crystal panel LCD, an end of resistance R 17 and power supply chip U4 is connected, the negative pole of diode D1 and the LX pin that meets power supply chip U4 after an end of inductance L 1 is connected; The other end of resistance R 17 and the FB pin that meets power supply chip U4 after an end of resistance R 18 is connected; The other end of resistance R 18 is connected with the REF pin of power supply chip U4, and the collector electrode of the V+ pin of power supply chip U4, V-pin, triode Q7 meets DC power supply+5V, the negative pole of the GND pin of power supply chip U4, the other end of inductance L 1, electrochemical capacitor E1 and the FS pin of liquid crystal panel LCD, LEO-pin, FC pin, VSS pin common ground; Second display circuit comprises resistance R 21 and LED 1; The negative pole of LED 1 connects 61 pin of little process chip IC in the cpu circuit; The positive pole of LED 1 is connected with an end of resistance R 21, another termination DC power supply+5V of circuit R21.

described cpu circuit of the utility model comprises little process chip IC, the chip U5 that resets, power supply chip U6, artificial mouth USB, crystal oscillator CRY, resistance R 22～R25 and capacitor C 1, C2; 10 pin of artificial mouth USB are connected with 28 pin of an end of resistance R 24 and little process chip IC; 9 pin of artificial mouth USB are connected with 6 pin of an end of resistance R 25 and little process chip IC; 8 pin of artificial mouth USB are connected with 9 pin of an end of resistance R 22 and little process chip IC; The other end of resistance R 22 is connected with the RST pin of the chip U5 that resets; 3 pin of artificial mouth USB are connected with 30 pin of an end of resistance R 23 and little process chip IC; 6 pin of artificial mouth USB, 5 pin, 4 pin and 2 pin are connected with 14 pin, 8 pin, 29 pin and 31 pin of little process chip IC respectively; The end of crystal oscillator CRY is connected with 12 pin of an end of capacitor C 1 and little process chip IC; The other end of crystal oscillator CRY is connected with an end of

capacitor C

2 and 10 pin of little process chip IC; 77 pin of little process chip IC are connected with the OUT pin of power supply chip U6, and the other end of the VCC pin of 13 pin of little process chip IC, 78 pin, the chip U5 that resets, the INP pin of power supply chip U6, resistance R 24, the other end of resistance R 23 and 1 pin of artificial mouth USB meet DC power supply+5V, the other end of the GND pin of 11 pin of little process chip IC, 75 pin, the chip U5 that resets, the GND pin of power supply chip U6, capacitor C 1, C2, the other end of resistance R 25 and the 7 pin common grounds of artificial mouth USB.

described communication unit of the utility model comprises communication chip TU1, amplifier TU2A, TU2B, TU2C and resistance TR1～TR3, TR5～TR10; The end of resistance TR6 and the A pin that connects remote monitoring after the A pin of communication chip TU1 is connected; The other end of resistance TR6 is connected with the end of resistance TR8, TR9 and IVCC1 pin, the IVCC2 pin of communication chip; The other end of resistance TR8 is connected with DI DRV pin with the DI IN pin of communication chip TU1; The other end of resistance TR9 is connected with DE DRV pin with the DE IN pin of communication chip TU1; The two ends of resistance TR7 are connected with the LED pin with the RO DRV pin of communication chip TU1 respectively; The end of resistance TR5 and the B pin that connects remote monitoring after the B pin of communication chip TU1 is connected; The other end of resistance TR5 is connected with the end of resistance TR10 and COM1 pin, the COM2 pin of communication chip TU1, and the other end of resistance TR10 is connected with the SH pin of remote monitoring, and the DI pin of the terminated communications chip TU1 of resistance TR1 connects; The output of another termination amplifier TU2A of resistance TR1; The normal phase input end of amplifier TU2A connects 34 pin of little process chip IC in the cpu circuit, and the DE pin of the terminated communications chip TU1 of resistance TR2 connects, the output of another termination amplifier TU2B of resistance TR2; The negative-phase input of amplifier TU2B connects 35 pin of little process chip IC in the cpu circuit; The end of resistance TR3 is connected with the negative-phase input of the RO pin of communication chip TU1 and amplifier TU2C, the other end of resistance TR3 with meet DC power supply+5V, 33 pin of little process chip IC in the output termination cpu circuit of amplifier TU2C after the normal phase input end of amplifier TU2C is connected; VCC1 pin～VCC5 pin of communication chip TU1, the positive supply input of amplifier TU2A, the normal phase input end of amplifier TU2B meet DC power supply+5V, the negative supply input of the SD pin of communication chip TU1, GND2 pin, GND1 pin, amplifier TU2A, inverting input common ground.

the utility model can realize that through the said structure design a kind of function is stronger, simple in structure, reliability is high, the controller of lower-cost change over switch.

Description of drawings

Fig. 1 is the control circuit block diagram of the utility model.

Fig. 2 is the circuit diagram of the power circuit of the utility model.

Fig. 3 is the circuit diagram of the voltage signal change-over circuit of the utility model.

Fig. 4 is the circuit diagram of the keyboard circuit of the utility model.

Fig. 5 is the circuit diagram of the position of the switch testing circuit of the utility model.

Fig. 6 is the circuit diagram of the power selection circuit of the utility model.

Fig. 7 is the circuit diagram of the performance element of the utility model.

Fig. 8 is the circuit diagram of the display circuit of the utility model.

Fig. 9 is the circuit diagram of the cpu circuit of the utility model.

Figure 10 is the circuit diagram of the communication unit of the utility model.

Embodiment

see also Fig. 1; A kind of controller of change over switch; Comprise power circuit 1, voltage signal change-over circuit 2, keyboard circuit 3, position of the switch testing circuit 4, power selection circuit 5, performance element 6, display circuit 7, cpu circuit 8 and communication unit 9; Power circuit 1 is connected with stand-by power supply with power supply commonly used respectively; Each circuit is given in power supply; The signal input part of said cpu circuit 8 is connected with voltage signal change-over circuit 2, keyboard circuit 3, position of the switch testing circuit 4 and communication unit 9, and the signal output part of said cpu circuit 8 is connected with power selection circuit 5, performance element 6, display circuit 7 and communication unit 9, and the input of voltage signal change-over circuit 2 is connected with stand-by power supply with power supply commonly used respectively; The input of position of the switch testing circuit 4 is connected with the status signal of change over switch, and the output of performance element 6 is connected with change over switch.

are as shown in Figure 2; Described power circuit 1 comprises single-phase two winding transformer T1, T3, bridge heap B1, B3, three-terminal voltage-stabilizing chip U1 and U2; Wherein, Three-terminal voltage-stabilizing chip U1, U2 adopt 7812 and 7805 respectively; The primary coil of single-phase two winding transformer T1, T3 meets two lead-in wire 2L1, the 2N of two lead-in wire 1L1,1N and stand-by power supplies of power supply commonly used respectively; Secondary coil connects the input of bridge heap B1, B3 respectively, and an end of the output of bridge heap B1 and the Vin end that meets three-terminal voltage-stabilizing chip U1 after an end of the output of bridge heap B3 is connected, the Vout of three-terminal voltage-stabilizing chip U1 are held output DC source+12V and held with the Vin of three-terminal voltage-stabilizing chip U2 and be connected; Vout end output DC source+5V of three-terminal voltage-stabilizing chip U2, the GND end common ground of the other end, three-terminal voltage-stabilizing chip U1 and the U2 of the output of bridge heap B1, B3.DC power supply+5V and+12V power supply as each circuit.

are as shown in Figure 3; Described voltage signal change-over circuit 2 comprises transformer T2, T4, bridge heap B2, B4, resistance R 1, R2, R27, R28 and amplifier U3A, U3B; Wherein, Amplifier U3A, U3B adopt LM244, and the primary coil of transformer T2, T4 meets two inlet wire 2L1, the 2N of two inlet wire 1L1,1N and the stand-by power supply of power supply commonly used respectively, and the secondary coil of transformer T2, T4 connects the input of bridge heap B2, B4 respectively; One end of the output of bridge heap B2 is connected with an end of resistance R 1; The other end of resistance R 1 is connected with an end of resistance R 2 and the inverting input of amplifier U3A, positive supply input termination DC power supply+12V of amplifier U3A, 50 pin of little process chip IC in the output termination cpu circuit 8 of amplifier U3A; One end of the output of bridge heap B4 is connected with an end of resistance R 27; The other end of resistance R 27 is connected with an end of resistance R 28 and the inverting input of amplifier U3B, 51 pin of little process chip IC in the output termination cpu circuit 8 of amplifier U3B, the other end, amplifier U3A, the normal phase input end of U3B and the negative supply input common ground of amplifier U3A of the output of bridge heap B2, B4.

are as shown in Figure 4; The described keyboard circuit 3 of the utility model comprises resistance R 3～R8, button 1S1～1S6; The end of resistance R 3～R8 is connected with 41～46 pin of microprocessor chip IC in the cpu circuit 8 respectively successively with after the end of button 1S1～1S6 is connected; The other end of resistance R 3～R8 meets DC power supply+5V jointly, the other end common ground of button 1S1～1S6.Button 1S1 is an acknowledgement key, and button 1S2 is decrement-key, and button 1S3 is increment+key, and button 1S4 is for setting (selection) key, and button 1S5 is a reset key, and button 1S6 is a stop key.

are as shown in Figure 5; Described position of the switch testing circuit 4 comprises optocoupler G1, resistance R 9 and R10, and wherein, optocoupler G1 adopts TLP181; One end of the input of optocoupler G1 is connected with an end of resistance R 9 and resistance R 10; The other end of resistance R 9 connects the status signal of conversion switch, the direct power supply+12V of another termination of resistance R 10,48 pin of little process chip IC in the termination cpu circuit 8 of the output of optocoupler G1; The status signal of described change over switch is sent into 48 pin of little process chip IC in the cpu circuit 8 after optocoupler G1 isolates, optocoupler G1 the other end and the other end common ground of output of input.

are as shown in Figure 6; After 53 pin of said power selection circuit 5 little process chip IC from cpu circuit 8 and 55 pin receive actuating signal; The coil electricity of relay K A1, KA2, first moving contact of relay K A1 and second moving contact of relay K A2 are closed with fixed contact respectively, at this moment the coil no power of relay K A4; Its each moving contact is got to normally-closed contact; Relay K A3 coil electricity, its each moving contact is got to normally opened contact, lead-in wire L, the N of two inlet wire 1L1 of feasible power supply commonly used, electric power transfer to the change over switch of 1N.On the other hand; When the actuating signal of 53 pin of little process chip IC and 55 pin disappears in from cpu circuit 8, the coil blackout of relay K A1, KA2, first moving contact of relay K A1 and second moving contact of relay K A2 break off with fixed contact respectively; And first moving contact of second moving contact of relay K A1 and relay K A2 is closed with fixed contact respectively; The coil blackout of relay K A3, its each moving contact is got to normally-closed contact, the coil electricity of relay K A4; Its each moving contact is got to normally opened contact, thereby makes lead-in wire L, the N of electric power transfer to change over switch of two inlet wire 2L1,2N of stand-by power supply.

are as shown in Figure 7, said performance element 6 successively from cpu circuit 8 57 pin of little process chip IC, 58 pin, 59 pin and 60 pin receive actuating signal, when only when 57 pin of little process chip IC receive actuating signal; Triode Q4～Q6 does not work, the coil blackout of relay K A6, KA7, KA8, and second moving contact of relay K A6, KA7, KA8 and fixed contact are closed; DC power supply+12V is supplied to the collector electrode of triode Q3, relay K A5 coil electricity, and its first moving contact and fixed contact are closed; U-S1 end is held with U-S2 and is connected, and when only when 58 pin of little process chip IC receive actuating signal, triode Q3, Q5, Q6 do not work; The coil blackout of relay K A5, KA7, KA8, second moving contact of relay K A5, KA7, KA8 and fixed contact are closed, and DC power supply+12V is supplied to the collector electrode of triode Q4; The coil electricity of relay K A6, its first moving contact and fixed contact are closed, and the U-S1 end is connected with the U-S4 end; When only when 59 pin of little process chip IC receive actuating signal, triode Q3, Q4, Q6 do not work, the coil blackout of relay K A5, KA6, KA8; Second moving contact of relay K A5, KA6, KA8 and fixed contact are closed, and DC power supply+12V is supplied to the collector electrode of triode Q5, the coil electricity of relay K A7; Its first moving contact and fixed contact are closed, and the R-S1 end is held with R-S2 and is connected, when only when 60 pin of little process chip IC receive actuating signal; Triode Q3, Q4, Q5 do not work, the coil blackout of relay K A5, KA6, KA7, and second moving contact of relay K A5, KA6, KA7 and fixed contact are closed; DC power supply+12V is supplied to the collector electrode of triode Q6; The coil electricity of relay K A8, its first moving contact and fixed contact are closed, and the R-S1 end is connected with the R-S4 end.

are as shown in Figure 8, and described display circuit 7 comprises first display circuit and second display circuit, in first display circuit; Resistance R 17, R18, diode D1, inductance L 1 and power supply chip U4 form backlight electric power, and wherein, power supply chip U4 adopts MAX765; Resistance R 20 is formed drive circuit with triode Q7; Resistance R 19 is formed reset circuit with electrochemical capacitor E1, and described first display circuit is after 62 pin of little process chip IC receive signal from cpu circuit 8, by backlight electric power and driving circuit drives liquid crystal panel LCD backlight lightening; Carrying out liquid crystal panel LCD by reset circuit resets; And the information that receives shown that on liquid crystal panel LCD, liquid crystal panel adopts WG12864 here.In addition, in second display circuit, 61 pin of said second display circuit little process chip IC from cpu circuit 8 are lighted by resistance R 21 driven for emitting lights diode (LED)s 1 after receiving signal.

are as shown in Figure 9; Described cpu circuit 7 comprises little process chip IC, the chip U5 that resets, power supply chip U6, artificial mouth USB, crystal oscillator CRY, resistance R 22～R25 and capacitor C 1, C2; Wherein, Little process chip IC adopts M3028; The chip that resets adopts MAX809; Power supply chip U6 adopts MAX6035; 10 pin of artificial mouth USB are connected with 28 pin of an end of resistance R 24 and little process chip IC, and 9 pin of artificial mouth USB are connected with 6 pin of an end of resistance R 25 and little process chip IC, and 8 pin of artificial mouth USB are connected with 9 pin of an end of resistance R 22 and little process chip IC; The other end of resistance R 22 is connected with the RST pin of the chip U5 that resets; 3 pin of artificial mouth USB are connected with 30 pin of an end of resistance R 23 and little process chip IC, and 6 pin of artificial mouth USB, 5 pin, 4 pin and 2 pin are connected with 14 pin, 8 pin, 29 pin and 31 pin of little process chip IC respectively, and the end of crystal oscillator CRY is connected with 12 pin of an end of capacitor C 1 and little process chip IC; The other end of crystal oscillator CRY is connected with an end of

capacitor C

2 and 10 pin of little process chip IC; 77 pin of little process chip IC are connected with the OUT pin of power supply chip U6, the other end of the VCC pin of 13 pin of little process chip IC, 78 pin, the chip U5 that resets, the INP pin of power supply chip U6, resistance R 24, the other end of resistance R 23 and 1 pin DC power supply+5V of artificial mouth USB, the other end of the GND pin of 11 pin of little process chip IC, 75 pin, the chip U5 that resets, the GND pin of power supply chip U6, capacitor C 1, C2, the other end of resistance R 25 and the 7 pin common grounds of artificial mouth USB.Little process chip IC, crystal oscillator CRY, capacitor C 1, C2 form clock circuit.Chip U5, resistance R 22 composition reset circuits reset.Power supply chip U6 is the power supply reference circuit.Artificial mouth USB, resistance R 23, R24, R25 form artificial circuit.

are shown in figure 10; Described communication unit 9 comprises communication chip TU1, amplifier TU2A, TU2B, TU2C and resistance TR1～TR3, TR5～TR10; Wherein, Communication chip TU1 adopts MAX1480, the end of resistance TR6 and the A pin that connects remote monitoring after the A pin of communication chip TU1 is connected, and the other end of resistance TR6 is connected with the end of resistance TR8, TR9 and I VCC1 pin, the IVCC2 pin of communication chip; The other end of resistance TR8 is connected with DI DRV pin with the DI IN pin of communication chip TU1; The other end of resistance TR9 is connected with DE DRV pin with the DE IN pin of communication chip TU1, and the end of resistance TR7 is connected with the RO DRV pin of communication chip TU1, and the other end of resistance TR7 is connected with the LED pin of communication chip TU1; The end of resistance TR5 and the B pin that connects remote monitoring after the B pin of communication chip TU1 is connected; The other end of resistance TR5 is connected with the end of resistance TR10 and COM1 pin, the COM2 pin of communication chip TU1, and the other end of resistance TR10 is connected with the SH pin of remote monitoring, and the DI pin of the terminated communications chip TU1 of resistance TR1 connects; The output of another termination amplifier TU2A of resistance TR1; The normal phase input end of amplifier TU2A connects 34 pin of little process chip IC in the cpu circuit, and the DE pin of the terminated communications chip TU1 of resistance TR2 connects, the output of another termination amplifier TU2B of resistance TR2; The negative-phase input of amplifier TU2B connects 35 pin of little process chip IC in the cpu circuit; The end of resistance TR3 is connected with the negative-phase input of the RO pin of communication chip TU1 and amplifier TU2C, the other end of resistance TR3 with meet DC power supply+5V, 33 pin of little process chip IC in the output termination cpu circuit of amplifier TU2C after the normal phase input end of amplifier TU2C is connected; VCC1 pin～VCC5 pin of communication chip TU1, the positive supply input of amplifier TU2A, the normal phase input end of amplifier TU2B meet DC power supply+5V, the negative supply input of the SD pin of communication chip TU1, GND2 pin, GND1 pin, amplifier TU2A, inverting input common ground.

When using the controller of this change over switch; At first set each parameter and deliver to little process chip IC in the cpu circuit 8 through each button in the keyboard circuit 3; When finding power failure commonly used through remote monitoring, communication unit provides signal to cpu circuit 8, by cpu circuit 8 control execution unit 6 to change over switch output action signal; Make change over switch output change-over switch status signal; After the optocoupler of said change over switch status signal in position of the switch testing circuit 4 isolated, become level signal and supply with cpu circuit 8, after little process chip IC receives said level signal; The control power selection circuit selects stand-by power supply to supply power, and the driving display circuit makes light-emitting diode light, simultaneously the information that receives is presented on the liquid crystal panel LCD

Claims

1. the controller of a change over switch; Comprise power circuit (1), voltage signal change-over circuit (2), keyboard circuit (3), position of the switch testing circuit (4), power selection circuit (5), performance element (6), display circuit (7), cpu circuit (8) and communication unit (9); Power circuit (1) is connected with stand-by power supply with power supply commonly used; Each circuit is given in power supply; Said cpu circuit (8) is connected with voltage signal change-over circuit (2), keyboard circuit (3), position of the switch testing circuit (4), power selection circuit (5), performance element (6), display circuit (7) and communication unit (9); Voltage signal change-over circuit (2) is connected with stand-by power supply with power supply commonly used, and position of the switch testing circuit (4) is connected with the status signal of change over switch, and power selection circuit (5) is connected with power supply commonly used, stand-by power supply and change over switch; Performance element (6) is connected with change over switch, and communication unit (9) is connected with remote monitoring.

2. the controller of a kind of change over switch according to claim 1; It is characterized in that described power circuit (1) comprises single-phase two winding transformer T1, T3, bridge heap B1, B3, three-terminal voltage-stabilizing chip U1, U2; The primary coil of single-phase two winding transformer T1, T3 meets two lead-in wire 2L1, the 2N of two lead-in wire 1L1,1N and stand-by power supplies of power supply commonly used respectively; Secondary coil connects the input of bridge heap B1, B3 respectively; One end of the output of bridge heap B1 is held with the Vin that meets three-terminal voltage-stabilizing chip U1 after an end of the output of bridge heap B3 is connected; The Vout of three-terminal voltage-stabilizing chip U1 holds output DC source+12V and is connected with the Vin end of three-terminal voltage-stabilizing chip U2, Vout end output DC source+5V of three-terminal voltage-stabilizing chip U2, the GND end common ground of the other end, three-terminal voltage-stabilizing chip U1 and the U2 of the output of bridge heap B1, B3.

3. the controller of a kind of change over switch according to claim 1; It is characterized in that described voltage signal change-over circuit (2) comprises transformer T2, T4, bridge heap B2, B4, resistance R 1, R2, R27, R28 and amplifier U3A, U3B; The primary coil of transformer T2, T4 meets two inlet wire 2L1, the 2N of two inlet wire 1L1,1N and the stand-by power supply of power supply commonly used respectively; The secondary coil of transformer T2, T4 connects the input of bridge heap B2, B4 respectively; One end of the output of bridge heap B2 is connected with an end of resistance R 1; The other end of resistance R 1 is connected with an end of resistance R 2 and the inverting input of amplifier U3A, positive supply input termination DC power supply+5V of amplifier U3A, 50 pin of little process chip IC in the output termination cpu circuit (8) of amplifier U3A; One end of the output of bridge heap B4 is connected with an end of resistance R 27; The other end of resistance R 27 is connected with an end of resistance R 28 and the inverting input of amplifier U3B, 51 pin of little process chip IC in the output termination cpu circuit (8) of amplifier U3B, the other end, amplifier U3A, the normal phase input end of U3B and the negative supply input common ground of amplifier U3A of the output of bridge heap B2, B4.

4. the controller of a kind of change over switch according to claim 1; It is characterized in that described keyboard circuit (3) comprises resistance R 3～R8, button 1S1～1S6; The end of resistance R 3～R8 is connected with 41～46 pin of microprocessor chip IC in the cpu circuit (8) respectively successively with after the end of button 1S1～1S6 is connected; The other end of resistance R 3～R8 meets DC power supply+5V jointly, the other end common ground of button 1S1～1S6.

5. the controller of a kind of change over switch according to claim 1; It is characterized in that described position of the switch testing circuit (4) comprises optocoupler G1, resistance R 9 and R10; One end of the input of optocoupler G1 is connected with an end of resistance R 9 and resistance R 10; The other end of resistance R 9 connects the status signal of conversion switch; Direct power supply+the 12V of another termination of resistance R 10,48 pin of little process chip IC in the termination cpu circuit (8) of the output of optocoupler G1, optocoupler G1 the other end and the other end common ground of output of input.

6. the controller of a kind of change over switch according to claim 1; It is characterized in that described power selection circuit (5) comprises resistance R 11, R12, triode Q1, Q2 and relay K A1～KA4; The end of resistance R 11, R12 connects 53 pin and 55 pin of little process chip IC in the cpu circuit (8) respectively; The other end of resistance R 11, R12 connects the base stage of triode Q1, Q2 respectively; The emitter of triode Q1, Q2 is succeeded an end of the coil of electrical equipment KA1, KA2 respectively; The collector electrode of triode Q1, Q2 meets DC power supply+12V; Normally opened contact in first pair of fixed contact of the inlet wire 1L1 end of power supply commonly used and first moving contact of relay K A1 and relay K A3 is connected; The inlet wire 1N end of power supply commonly used is connected with an end of the coil of relay K A3 and the 4th moving contact of relay K A3; Normally opened contact in second moving contact of the inlet wire 2L1 of stand-by power supply end and relay K A1 and the 4th pair of fixed contact of relay K A4 is connected; The inlet wire 2N end of stand-by power supply is connected with an end of the coil of first moving contact of relay K A4 and relay K A4, is connected to change over switch behind the normally-closed contact in normally-closed contact in the 3rd pair of fixed contact of the lead-in wire L connection relay K A3 of said power selection circuit (5) and the 3rd pair of fixed contact of relay K A4, is connected to change over switch behind the normally opened contact in the normally opened contact in the 4th pair of fixed contact of the lead-in wire N connection relay K A3 of said power selection circuit (5) and the first pair of fixed contact of relay K A4; Lead-in wire L, N and change switch and be connected; First fixed contact of relay K A1 is connected with first moving contact with second moving contact of relay K A2 respectively with second fixed contact, and first fixed contact of relay K A2 is connected with second moving contact of relay K A3, and second fixed contact of relay K A2 is connected with second moving contact of relay K A4; First moving contact of relay K A3 is connected with the 3rd moving contact of relay K A4; The 3rd moving contact of relay K A3 is connected with the 4th moving contact of relay K A4, and the normally-closed contact in second pair of fixed contact of relay K A3 is connected with the other end of the coil of relay K A4, and the normally-closed contact in second pair of fixed contact of the other end of the coil of relay K A3 and relay K A4 is connected; Other contacts in four pairs of fixed contacts of relay K A3 and relay K A4 are all unsettled, the other end common ground of the coil of relay K A1 and relay K A2.

7. the controller of a kind of change over switch according to claim 1; It is characterized in that described performance element (6) comprises resistance R 13～R16, triode Q3～Q6, relay K A5～KA8; The end of resistance R 13～R16 connects 57 pin, 58 pin, 59 pin and 60 pin of little process chip IC in the cpu circuit (8) respectively; The other end of resistance R 13～R16 connects the base stage of triode Q3～Q6 respectively; The emitter of triode Q3～Q6 is succeeded an end of the coil of electrical equipment KA5～KA8 respectively; First moving contact of relay K A5 and the U-S1 end that connects the conversion switch after first moving contact of relay K A6 is connected; Second moving contact of relay K A5 with meet DC power supply+12V after second moving contact of relay K A7 is connected, second fixed contact of relay K A5 is connected with second moving contact of the collector electrode of triode Q4 and relay K A8, second moving contact of relay K A6 is connected with the collector electrode of second fixed contact of relay K A7 and triode Q6; Second fixed contact of relay K A6 is connected with the collector electrode of triode Q3; First moving contact of relay K A7 and the R-S1 pin that connects the conversion switch after first moving contact of relay K A8 is connected, second fixed contact of relay K A8 is connected with the collector electrode of triode Q5, first fixed contact of relay K A5～KA8 connect respectively the conversion switch U-S2 end, U-S4 end, R-S2 holds and R-S4 holds.

8. the controller of a kind of change over switch according to claim 1; It is characterized in that described display circuit (7) comprises first display circuit and second display circuit; Wherein, First display circuit comprises power supply chip U4, liquid crystal panel LCD, resistance R 17～R20, inductance L 1, diode D1, electrochemical capacitor E1 and triode Q7; 62 pin of little process chip IC in the one termination cpu circuit (8) of resistance R 20; The other end of resistance R 20 is connected with the base stage of triode Q7; The emitter of triode Q7 is connected with the LED+ pin of liquid crystal panel LCD; The DB7 of liquid crystal panel LCD～DB0 pin, C/D pin, CE pin, RD pin, WR pin connect 63～70 pin, 71 pin, 72 pin, 73 pin, 74 pin of little process chip IC in the cpu circuit (8) respectively, an end of resistance R 19 and the positive pole of electrochemical capacitor E1 and liquid crystal panel LCD /the RST pin is connected, the other end of resistance R 19 with meet DC power supply+5V after the VDD pin of liquid crystal panel LCD is connected; After being connected, the OUT pin of the V0 pin of the positive pole of diode D1 and liquid crystal panel LCD, an end of resistance R 17 and power supply chip U4 meets DC power supply-9V; The negative pole of diode D1 and the LX pin that meets power supply chip U4 after an end of inductance L 1 is connected, the other end of resistance R 17 and the FB pin that meets power supply chip U4 after an end of resistance R 18 is connected, the other end of resistance R 18 is connected with the REF pin of power supply chip U4; The collector electrode of the V+ pin of power supply chip U4, V-pin, triode Q7 meets DC power supply+5V, the negative pole of the GND pin of power supply chip U4, the other end of inductance L 1, electrochemical capacitor E1 and the FS pin of liquid crystal panel LCD, LEO-pin, FC pin, VSS pin common ground; Second display circuit comprises resistance R 21 and LED 1; The negative pole of LED 1 connects 61 pin of little process chip IC in the cpu circuit (8); The positive pole of LED 1 is connected with an end of resistance R 21, another termination DC power supply+5V of circuit R21.

9. the controller of a kind of change over switch according to claim 1; It is characterized in that described cpu circuit (8) comprises little process chip IC, the chip U5 that resets, power supply chip U6, artificial mouth USB, crystal oscillator CRY, resistance R 22～R25 and capacitor C 1, C2; 10 pin of artificial mouth USB are connected with 28 pin of an end of resistance R 24 and little process chip IC; 9 pin of artificial mouth USB are connected with 6 pin of an end of resistance R 25 and little process chip IC; 8 pin of artificial mouth USB are connected with 9 pin of an end of resistance R 22 and little process chip IC; The other end of resistance R 22 is connected with the RST pin of the chip U5 that resets; 3 pin of artificial mouth USB are connected with 30 pin of an end of resistance R 23 and little process chip IC; 6 pin of artificial mouth USB, 5 pin, 4 pin and 2 pin are connected with 14 pin, 8 pin, 29 pin and 31 pin of little process chip IC respectively; The end of crystal oscillator CRY is connected with 12 pin of an end of capacitor C 1 and little process chip IC, and the other end of crystal oscillator CRY is connected with an end of capacitor C 2 and 10 pin of little process chip IC, and 77 pin of little process chip IC are connected with the OUT pin of power supply chip U6; The other end of the VCC pin of 13 pin of little process chip IC, 78 pin, the chip U5 that resets, the INP pin of power supply chip U6, resistance R 24, the other end of resistance R 23 and 1 pin of artificial mouth USB meet DC power supply+5V, the other end of the GND pin of 11 pin of little process chip IC, 75 pin, the chip U5 that resets, the GND pin of power supply chip U6, capacitor C 1, C2, the other end of resistance R 25 and the 7 pin common grounds of artificial mouth USB.

10. the controller of a kind of change over switch according to claim 1; It is characterized in that described communication unit (9) comprises communication chip TU1, amplifier TU2A, TU2B, TU2C and resistance TR1～TR3, TR5～TR10; The end of resistance TR6 and the A pin that connects remote monitoring after the A pin of communication chip TU1 is connected; The other end of resistance TR6 is connected with the end of resistance TR8, TR9 and IVCC1 pin, the IVCC2 pin of communication chip; The other end of resistance TR8 is connected with DI DRV pin with the DI IN pin of communication chip TU1; The other end of resistance TR9 is connected with DE DRV pin with the DE IN pin of communication chip TU1; The two ends of resistance TR7 are connected with the LED pin with the RO DRV pin of communication chip TU1 respectively, the end of resistance TR5 and the B pin that connects remote monitoring after the B pin of communication chip TU1 is connected, and the other end of resistance TR5 is connected with the end of resistance TR10 and COM1 pin, the COM2 pin of communication chip TU1; The other end of resistance TR10 is connected with the SH pin of remote monitoring; The DI pin of the terminated communications chip TU1 of resistance TR1 connects, the output of another termination amplifier TU2A of resistance TR1, and the normal phase input end of amplifier TU2A connects 34 pin of little process chip IC in the cpu circuit; The DE pin of the terminated communications chip TU1 of resistance TR2 connects; The output of another termination amplifier TU2B of resistance TR2, the negative-phase input of amplifier TU2B connects 35 pin of little process chip IC in the cpu circuit (8), and the end of resistance TR3 is connected with the negative-phase input of the RO pin of communication chip TU1 and amplifier TU2C; The other end of resistance TR3 with meet DC power supply+5V after the normal phase input end of amplifier TU2C is connected; 33 pin of little process chip IC in the output termination cpu circuit (8) of amplifier TU2C, VCC1 pin～VCC5 pin of communication chip TU1, the positive supply input of amplifier TU2A, the normal phase input end of amplifier TU2B meet DC power supply+5V, the negative supply input of the SD pin of communication chip TU1, GND2 pin, GND1 pin, amplifier TU2A, inverting input common ground.