CN202150735U

CN202150735U - Controller of change-over switch

Info

Publication number: CN202150735U
Application number: CN201120268699U
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: 2012-02-22
Anticipated expiration: 2021-07-27

Abstract

A controller of a change-over switch belongs to the switch accessory technology field, and comprises a power supply circuit, a voltage signal converting circuit, a parameter setting circuit, a switch position detection circuit, an execution unit, a display circuit, a CPU circuit and a power generation control circuit. The CPU circuit is connected with the voltage signal converting circuit, the parameter setting circuit, the switch position detection circuit, the execution unit, the display circuit and the power generation control circuit, the power supply circuit is connected with a common power supply or a standby power supply to supply each circuit with power, and the voltage signal converting circuit is connected with the common power supply and the standby power supply; the switch position detection circuit is connected with a state signal of the change-over switch, the execution unit is connected with the common power supply, the standby power supply, the change-over switch and a position signal of the change-over switch, the display circuit is connected with the position signal of the change-over switch, and the power generation control circuit is connected with a generator. The advantages of the controller of the change-over switch of the utility model are that the functions are practical, the structure is simple, the reliability is high and the cost is low.

Description

The 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 or 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 the conversion open loop once more, realize uninterrupted power supply thus to load.

transfer switch is seen from structure, can also can be made up of 2 circuit breakers 2 contactor assembly units different constituted modes, and correspondingly, its control mode also has different types.The controller of automatic change-over mainly adopts two types of analog circuit and digital circuits, wherein at present both at home and abroad; 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, lower-cost be the controller of the change over switch of core with the single-chip microcomputer.

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, parameter setting circuit, position of the switch testing circuit, performance element, display circuit, cpu circuit and generation control circuit; Said cpu circuit is connected with generation control circuit with voltage signal change-over circuit, parameter setting circuit, position of the switch testing circuit, performance element, display circuit; Power circuit is connected with stand-by power supply with power supply commonly used, and each circuit is given in power supply, 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 change over switch status signal; Performance element is connected with power supply commonly used, stand-by power supply, change over switch and switch positions signal, and display circuit is connected with the change over switch status signal, and generation control circuit is connected with generator.

described power circuit of the utility model comprises single-phase two winding transformer T1, T4, bridge heap B1, B2, B5, B6, three-terminal voltage-stabilizing chip U1, U2, U3, U8, diode D1, D2 and electrochemical capacitor E1, E2; The primary coil of single-phase two winding transformer T1, T4 connects power supply commonly used and stand-by power supply respectively; Secondary coil connects the input of bridge heap B1, B2, B5, B6 respectively; The Vin end of the positive output termination three-terminal voltage-stabilizing chip U3 of bridge heap B1 and the positive pole of diode D1; The negative pole of diode D1 connects the Vin end of U1; 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 positive output end of bridge heap B5 connects the Vin end of U8 and the positive pole of diode D2 respectively, and the negative pole of diode D2 connects the Vin end of U1; The Vout end of three-terminal voltage-stabilizing chip U3 outputs to the LED-N end of display circuit; The Vout end of three-terminal voltage-stabilizing chip U8 outputs to the LED-R end of display circuit, and the positive pole that the positive output end of bridge heap B2, B6 meets electrochemical capacitor E1, E2 respectively connects back output DC source+48V, the negative pole common ground of the GND end of negative output terminal, three-terminal voltage-stabilizing chip U1, U2, U3 and the U8 of bridge heap B1, B2, B5 and B6 and electrochemical capacitor E1, E2.

The described voltage signal change-over circuit of the utility model comprises transformer T2, T3, bridge heap B3, B4, resistance R 1, R2, R27, R28 and amplifier U4A, U4B; The primary coil of transformer T2 is connected with two inlet wire IL1, the 1N of power supply commonly used; The primary coil of transformer T3 is connected with two inlet wire 2L1, the 2N of stand-by power supply respectively; The secondary coil of transformer T2, T3 connects the input of bridge heap B3, B4 respectively; The positive output end of bridge heap B3 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 U4A; The positive output end 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 U4B, positive supply input termination DC power supply+12V of amplifier U4A; The output of amplifier U4A and U4B connects 35,34 pin of little process chip IC in the cpu circuit respectively, negative output terminal, amplifier U4A, the normal phase input end of U4B and the negative power end common ground of amplifier U4A of bridge heap B3, B4.

described parameter setting circuit of the utility model comprises resistance R 5～R16, change over switch SW1, SW3, code switch SW2 and DIP switch DIP1; Connect 1 pin of little process chip IC in the cpu circuit behind the stopping the contact and an end of resistance R 5 is connected of change over switch SW1; The spare contact of change over switch SW1 and 2 pin that meet little process chip IC in the cpu circuit after an end of resistance R 6 is connected; The contact commonly used of change over switch SW1 and 3 pin that meet little process chip IC in the cpu circuit after an end of resistance R 7 is connected; The automated contact of change over switch SW1 and 48 pin that meet little process chip IC in the cpu circuit after an end of resistance R 8 is connected; The Q0 contact of code switch SW2 and 24 pin that meet little process chip IC in the cpu circuit after an end of resistance R 9 is connected; The Q1 contact of code switch SW2 and 23 pin that meet little process chip IC in the cpu circuit after an end of resistance R 10 is connected; The Q2 contact of code switch SW2 and 22 pin that meet little process chip IC in the cpu circuit after an end of resistance R 11 is connected; The Q3 contact of code switch SW2 and 21 pin that meet little process chip IC in the cpu circuit after an end of resistance R 12 is connected; First fixed contact of change over switch SW3 and 32 pin that meet little process chip IC in the cpu circuit after an end of resistance R 13 is connected; Second fixed contact of change over switch SW3 and 31 pin that meet little process chip IC in the cpu circuit after an end of resistance R 14 is connected, the 3rd fixed contact of change over switch SW3 and 30 pin that meet little process chip IC in the cpu circuit after an end of resistance R 15 is connected, 2 fixed contacts of DIP switch DIP1 and 42 pin that meet little process chip IC in the cpu circuit after an end of resistance R 16 is connected; The other end of resistance R 5～R16 meets DC power supply+5V jointly, 2 moving contact common grounds of two COM contacts of the moving contact of change over switch SW1, code switch SW2, the moving contact of change over switch SW3 and DIP switch DIP1.

described position of the switch of the utility model testing circuit comprises optocoupler TL1, resistance R 3 and R4; One termination DC power supply+12V of resistance R 3; 1 pin of another termination optocoupler TL1 of

resistance R

3,2 pin of optocoupler TL1 are connected with the change over switch status signal, 5 pin of little process chip IC in the termination cpu circuit of 3 pin of optocoupler TL1 and resistance R 4; Another termination DC power supply+5V of resistance R 4, the 4 pin ground connection of optocoupler TL1.

described performance element of the utility model comprises relay K A1, KA2, KA3, KA4, triode Q1, Q2 and resistance R 17, R18; The end of resistance R 17, R18 connects 17 and 16 pin of little process chip IC in the cpu circuit respectively; The other end of resistance R 17, R18 connects the base stage of triode Q1, Q2 respectively; The collector electrode of triode Q1, Q2 meets DC power supply+12V respectively; The emitter of triode Q1, Q2 is succeeded an end of electrical equipment KA1, KA2 coil respectively; 2 moving contacts of relay K A1 meet DC power supply+48V jointly; Normally opened contact in normally-closed contact in first pair of fixed contact of relay K A1 and the second pair of fixed contact of relay K A1 is connected with 2 moving contacts of relay K A2 respectively, and the normally-closed contact in first pair of fixed contact of relay K A2 is connected with an end of the coil of relay K A3, and the normally opened contact in second pair of fixed contact of relay K A2 is connected with an end of the coil of relay K A4; The other end of relay K A3, KA4 coil connects the conversion switch position signal; Other contacts in 2 pairs of fixed contacts of relay K A1, KA2 are all unsettled, and 2 moving contacts of relay K A3 are connected with two inlet wire 1L, the 1N of power supply commonly used, and 2 fixed contacts of relay K A3 are connected the back respectively and insert change over switch with 2 moving contacts of relay K A4; 2 fixed contacts of relay K A4 are connected the other end common ground of the coil of relay K A1, KA2 with two inlet wire 2L, the 2N of stand-by power supply.

described display circuit of the utility model is made up of display module LED; 8 pin of display module LED and 9 pin connect the DC voltage-stabilizing chip U8 in the power circuit, the Vout end of U3 respectively; 10 pin connect the conversion switch position signal, and the 1-5 pin connects 40,39,38,37,36 pin of microprocessor chip IC respectively, and 6 pin meet DC power supply+5V; 12 pin meet DC power supply+12V, 7 pin ground connection.

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 19～R22 and capacitor C 1, C2; 10 pin of artificial mouth USB are connected with 26 pin of an end of resistance R 21 and little process chip IC; 9 pin of artificial mouth USB are connected with 4 pin of an end of resistance R 22 and little process chip IC; 8 pin of artificial mouth USB are connected with 7 pin of an end of resistance R 19 and little process chip IC; The other end of resistance R 19 is connected with the RST pin of the chip U5 that resets; 3 pin of artificial mouth USB are connected with 28 pin of an end of resistance R 20 and little process chip IC; 6 pin of artificial mouth USB, 5 pin, 4 pin and 2 pin are connected with 12 pin, 6 pin, 27 pin and 29 pin of little process chip IC respectively; The end of crystal oscillator CRY is connected with 8 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; 46 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 11 pin of little process chip IC, 47 pin, the chip U5 that resets, the INP pin of power supply chip U6, resistance R 21, the other end of resistance R 20 and 1 pin of artificial mouth USB meet DC power supply+5V, the other end of the GND pin of 9 pin of little process chip IC, 44 pin, the chip U5 that resets, the GND pin of power supply chip U6, capacitor C 1, C2, the other end of resistance R 22 and the 7 pin common grounds of artificial mouth USB.

described generation control circuit of the utility model comprises triode Q3～Q5, resistance R 23～R25 and relay K A5～KA7; The end of resistance R 23～R25 connects 15,14,13 pin of little process chip IC in the cpu circuit respectively; The other end of resistance R 23～R25 is connected with the base stage of triode Q3～Q5 respectively; The emitter of triode Q3～Q5 is connected with an end of the coil of relay K A5～KA7 respectively; Generator is inserted in the contact of relay K A5～KA7, and the collector electrode of triode Q3～Q5 meets DC power supply+12V jointly, the other end common ground of the coil of relay K A5～KA7.

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

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 parameter setting 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 performance element of the utility model.

Fig. 7 is the circuit diagram of the display circuit of the utility model.

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

Fig. 9 is the circuit diagram of the generation control circuit of the utility model.

Embodiment

see also Fig. 1; A kind of controller of change over switch; It is characterized in that: comprise power circuit 1, voltage signal change-over circuit 2, parameter setting circuit 3, position of the switch testing circuit 4, performance element 5, display circuit 6, cpu circuit 7 and generation control circuit 8; The signal input part of said cpu circuit 7 is connected with voltage signal change-over circuit 2, parameter setting circuit 3 and position of the switch testing circuit 4; The signal output part of said cpu circuit 7 is connected with performance element 5, display circuit 6 and generation control circuit 8, and the input of power circuit 1 is connected with the two-way inlet wire of power supply commonly used and stand-by power supply, and each circuit is given in power supply; The input of voltage signal change-over circuit 2 is connected with the two-way inlet wire of power supply commonly used and stand-by power supply respectively; The input of position of the switch testing circuit 4 is connected with the change over switch status signal, and the input of performance element 5 is connected with power supply commonly used, stand-by power supply and switch positions signal, and the output of performance element 5 is connected with change over switch; The input of display circuit 6 is connected with the change over switch status signal, and the output of generation control circuit 8 is connected with generator.

are as shown in Figure 2, and described power circuit 1 comprises single-phase two winding transformer T1, T4, bridge heap B1, B2, B5, B6, three-terminal voltage-stabilizing chip U1, U2, U3, U8, diode D1, D2 and electrochemical capacitor E1, E2; Three-terminal voltage-stabilizing chip U1 in the utility model, U2, U3, U8 adopt 7812,7805 respectively, 78L12,78L12; The primary coil of single-phase two winding transformer T1, T4 inserts power inleting terminal commonly used and stand-by power supply end of incoming cables respectively; The secondary coil of T1, T4 connects the input of bridge heap B1, B2, B5, B6 respectively; The Vin end of the positive output termination three-terminal voltage-stabilizing chip U3 of bridge heap B1 and the positive pole of diode D1; The negative pole of diode D1 connects the Vin end of U1; 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 positive output end of bridge heap B5 connects the Vin end of U8 and the positive pole of diode D2 respectively, and the negative pole of diode D2 connects the Vin end of U1; The Vout end of three-terminal voltage-stabilizing chip U3 outputs to the LED-N end of display circuit 6; The Vout end of three-terminal voltage-stabilizing chip U8 outputs to the LED-R end of display circuit 6, and the positive output end of bridge heap B2, B6 is connected back output DC source+48V respectively with the positive pole of electrochemical capacitor E1, E2, the negative pole common ground of the GND end of negative output terminal, three-terminal voltage-stabilizing chip U1, U2, U3 and the U8 of bridge heap B1, B2, B5 and B6 and electrochemical capacitor E1, E2.

are as shown in Figure 3; Described voltage signal change-over circuit 2 comprises transformer T2, T3, bridge heap B3, B4, resistance R 1, R2, R27, R28 and amplifier U4A, U4B; Amplifier U4A in the utility model, U4B adopt LM224; The primary coil of transformer T2 is connected with two inlet wire IL1, the 1N of power supply commonly used; The primary coil of transformer T3 is connected with two inlet wire 2L1, the 2N of stand-by power supply respectively, and the secondary coil of transformer T2, T3 connects the input of bridge heap B3, B4 respectively, and the positive output end of bridge heap B3 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 U4A; The positive output end 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 U4B, positive supply input termination DC power supply+12V of amplifier U4A; The output of amplifier U4A and U4B connects 35,34 pin of little process chip IC in the cpu circuit 7 respectively, negative output terminal, amplifier U4A, the normal phase input end of U4B and the negative power end common ground of amplifier U4A of bridge heap B3, B4.

are as shown in Figure 4; Described parameter setting circuit 3 will be represented the signal input cpu circuit 7 of working method through change over switch SW1, and when the moving contact of change over switch SW1 pushes respectively when stopping contact, spare contact, contact commonly used and automated contact, corresponding signal is imported into 1 pin, 2 pin, 3 pin and 48 pin of little process chip IC in the cpu circuit 7 respectively; In addition; Said parameter setting circuit 3 carries out the T1 time set through code switch SW2, when two com contacts are set as 00,01,10,11, exports signal from 24 pin, 23 pin, 22 pin and 21 pin of contact Q0, Q1, Q2, Q3 little process chip IC to cpu circuit 7 respectively; Change over switch SW3 carries out common voltage and sets; When the moving contact of change over switch SW3 pushes first fixed contact, second fixed contact, the 3rd fixed contact respectively, respectively the magnitude of voltage of 85%, 75%, 65% size is input to 32 pin, 31 pin and 30 pin of little process chip in the cpu circuit 7, then; Carrying out R/S through DIP switch DIP1 sets; DIP switch DIP1 is R during conducting, is S during disconnection, and correspondingly signal is imported into 2 pin of little process chip IC in the cpu circuit 7.

are as shown in Figure 5, and described position of the switch testing circuit 4 comprises optocoupler TL1, resistance R 3 and R4, wherein; Optocoupler TL1 adopts TLP181; One termination DC power supply+12V of

resistance R

3,1 pin of another termination optocoupler TL1 of

resistance R

3,2 pin of optocoupler TL1 are connected with the change over switch status signal; 5 pin of little process chip IC in the one termination cpu circuit 7 of 3 pin of optocoupler TL1 and resistance R 4; Described change over switch status signal is sent into 5 pin of little process chip IC in the cpu circuit 7, another termination DC power supply+5V of resistance R 4, the 4 pin ground connection of optocoupler TL1 after optocoupler TL1 isolates.

are as shown in Figure 6; 17,16 pin of the little process chip IC of said performance element 5 from said cpu circuit 7 obtain actuating signal, obtain the switch positions signal from change over switch, the coil electricity of relay K A1 and KA2; Their 2 moving contacts all jump to normally opened contact from normally-closed contact; Relay K A4 coil electricity, its 2 moving contacts respectively with 2 fixed contact adhesives, the electric power of stand-by power supply is transferred to change over switch.On the other hand, when the change over switch status signal disappears, the coil blackout of relay K A1 and KA2; Their 2 moving contacts are all got back to normally-closed contact from normally opened contact; Relay K A4 coil blackout, relay K A3 coil electricity, this moment relay K A4 2 moving contacts and 2 fixed contacts separately, 2 moving contacts of relay K A3 respectively with 2 fixed contact adhesives; Stand-by power supply is disconnected, and begins to start power supply commonly used.

are as shown in Figure 7, and described display circuit 6 is made up of display module LED, wherein; Display module LED adopts HG1286413, and 8 pin of display module LED and 9 pin connect the DC voltage-stabilizing chip U8 in the power circuit 1, the Vout end of U3 respectively, and 10 pin connect the conversion switch position signal; The 1-5 pin connects 40,39,38,37,36 pin of microprocessor chip IC respectively; 6 pin meet DC power supply+5V, and 12 pin meet DC power supply+12V, 7 pin ground connection.

are as shown in Figure 8; 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 19～R22 and capacitor C 1, C2; Wherein, Little process chip IC adopts M30260; Reset chip U5, U6 adopts MAX809 and MAX6035 respectively; 10 pin of artificial mouth USB are connected with 26 pin of an end of resistance R 21 and little process chip IC; 9 pin of artificial mouth USB are connected with 4 pin of an end of resistance R 22 and little process chip IC; 8 pin of artificial mouth USB are connected with 7 pin of an end of resistance R 19 and little process chip IC, and the other end of resistance R 19 is connected with the RST pin of the chip U5 that resets, and 3 pin of artificial mouth USB are connected with 28 pin of an end of resistance R 20 and little process chip IC; 6 pin of artificial mouth USB, 5 pin, 4 pin and 2 pin are connected with 12 pin, 6 pin, 27 pin and 29 pin of little process chip IC respectively; The end of crystal oscillator CRY is connected with 8 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 46 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 11 pin of little process chip IC, 47 pin, the chip U5 that resets, the INP pin of power supply chip U6, resistance R 21, the other end of resistance R 20 and 1 pin DC power supply+5V of artificial mouth USB, the other end of the GND pin of 9 pin of little process chip IC, 44 pin, the chip U5 that resets, the GND pin of power supply chip U6, capacitor C 1, C2, the other end of resistance R 22 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 19 composition reset circuits reset.Power supply chip U6 is the power supply reference circuit.Artificial mouth USB, resistance R 20, R21, R22 form artificial circuit.

are as shown in Figure 9; Described generation control circuit 8 comprises triode Q3～Q5, resistance R 23～R25 and relay K A5～KA7; The end of resistance R 23～R25 connects 15,14,13 pin of little process chip IC in the cpu circuit 7 respectively; The other end of resistance R 23～R25 is connected with the base stage of triode Q3～Q5 respectively, the emitter of triode Q3～Q5 respectively with an end of the coil of relay K A5～KA7, generator is inserted in the contact of relay K A5～KA7; The collector electrode of triode Q3～Q5 meets DC power supply+12V jointly, the other end common ground of the coil of relay K A5～KA7.When 15 pin of the little process chip IC of said generation control circuit from cpu circuit 7 obtain actuating signal; The coil electricity of relay K A5, its closing of contact makes engine start; When 14 pin of the little process chip IC of said generation control circuit from cpu circuit 7 obtain actuating signal; The coil electricity of relay K A6, its closing of contact makes engine unload; When 11 pin of the little process chip IC of said generation control circuit from cpu circuit 7 obtain actuating signal, the coil electricity of relay K A7, the closing of contact makes engine shutdown.

are at first set parameter through each switch in the parameter setting circuit when using the controller of this change over switch, when power supply catastrophic failure commonly used or power failure; Change over switch output change-over switch status signal and switch positions 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 7; After little process chip IC receives said level signal, drive triode Q3 in the generation control circuit, relay K A5 coil electricity through its 15 pin; The closing of contact makes generator start, in addition; Little process chip IC makes the coil electricity of relay K A1, KA2 through triode Q1, Q2 in the 16 pin driving execution circuit 3 17,, and their 2 moving contacts all jump to normally opened contact from normally-closed contact; Simultaneously, the switch positions signal is supplied with performance element 5, relay K A3 coil blackout, relay K A4 coil electricity; Thereby power supply commonly used is disconnected; Begin to start stand-by power supply, promptly generator is supplied with change over switch and is carried out continued power.Meanwhile, cpu circuit 7 provides drive signal to display circuit 6, and display circuit 6 obtains the switch positions signal from change over switch in addition, thereby lights display module LED.

In sum, the technical scheme that the utility model provides has overcome the shortcoming in the prior art, has reached goal of the invention, has embodied the described technique effect of applicant

Claims

1. the controller of a change over switch; It is characterized in that comprising power circuit (1), voltage signal change-over circuit (2), parameter setting circuit (3), position of the switch testing circuit (4), performance element (5), display circuit (6), cpu circuit (7) and generation control circuit (8); Said cpu circuit (7) is connected with voltage signal change-over circuit (2), parameter setting circuit (3), position of the switch testing circuit (4), performance element (5), display circuit (6) and generation control circuit (8); Power circuit (1) is connected with stand-by power supply with power supply commonly used; Each circuit is given in power supply; 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 change over switch status signal, and performance element (5) is connected with power supply commonly used, stand-by power supply, change over switch and switch positions signal; Display circuit (6) is connected with the switch positions signal, and generation control circuit (8) is connected with generator.

2. the controller of change over switch according to claim 1; It is characterized in that described power circuit (1) comprises single-phase two winding transformer T1, T4; Bridge heap B1, B2, B5, B6, three-terminal voltage-stabilizing chip U1, U2, U3, U8, diode D1, D2 and electrochemical capacitor E1, E2; The primary coil of single-phase two winding transformer T1, T4 connects power supply commonly used and stand-by power supply respectively; Secondary coil connects the input of bridge heap B1, B2, B5, B6 respectively; The Vin end of the positive output termination three-terminal voltage-stabilizing chip U3 of bridge heap B1 and the positive pole of diode D1; The negative pole of diode D1 connects the Vin end of U1; 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 positive output end of bridge heap B5 connects the Vin end of U8 and the positive pole of diode D2 respectively, and the negative pole of diode D2 connects the Vin end of U1; The Vout end of three-terminal voltage-stabilizing chip U3 outputs to the LED-N end of display circuit (6); The Vout end of three-terminal voltage-stabilizing chip U8 outputs to the LED-R end of display circuit (6), and the positive pole that the positive output end of bridge heap B2, B6 meets electrochemical capacitor E1, E2 respectively connects back output DC source+48V, the negative pole common ground of the GND end of negative output terminal, three-terminal voltage-stabilizing chip U1, U2, U3 and the U8 of bridge heap B1, B2, B5 and B6 and electrochemical capacitor E1, E2.

3. the controller of change over switch according to claim 1; It is characterized in that described voltage signal change-over circuit (2) comprises transformer T2, T3, bridge heap B3, B4, resistance R 1, R2, R27, R28 and amplifier U4A, U4B; The primary coil of transformer T2 is connected with two inlet wire IL1, the 1N of power supply commonly used; The primary coil of transformer T3 is connected with two inlet wire 2L1, the 2N of stand-by power supply respectively; The secondary coil of transformer T2, T3 connects the input of bridge heap B3, B4 respectively; The positive output end of bridge heap B3 is connected with an end of resistance R 1, and the other end of resistance R 1 is connected with an end of resistance R 2 and the inverting input of amplifier U4A, and the positive output end 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 U4B; Positive supply input termination DC power supply+12V of amplifier U4A, the output of amplifier U4A and U4B connects 35,34 pin of little process chip IC in the cpu circuit (7) respectively, negative output terminal, amplifier U4A, the normal phase input end of U4B and the negative power end common ground of amplifier U4A of bridge heap B3, B4.

4. the controller of change over switch according to claim 1; It is characterized in that described parameter setting circuit (3) comprises resistance R 5～R16, change over switch SW1, SW3, code switch SW2 and DIP switch DIP1; Connect 1 pin of little process chip IC in the cpu circuit (7) behind the stopping the contact and an end of resistance R 5 is connected of change over switch SW1; The spare contact of change over switch SW1 and 2 pin that meet little process chip IC in the cpu circuit (7) after an end of resistance R 6 is connected; The contact commonly used of change over switch SW1 and 3 pin that meet little process chip IC in the cpu circuit (7) after an end of resistance R 7 is connected; The automated contact of change over switch SW1 and 48 pin that meet little process chip IC in the cpu circuit (7) after an end of resistance R 8 is connected; The Q0 contact of code switch SW2 and 24 pin that meet little process chip IC in the cpu circuit (7) after an end of resistance R 9 is connected; The Q1 contact of code switch SW2 and 23 pin that meet little process chip IC in the cpu circuit (7) after an end of resistance R 10 is connected; The Q2 contact of code switch SW2 and 22 pin that meet little process chip IC in the cpu circuit (7) after an end of resistance R 11 is connected; The Q3 contact of code switch SW2 and 21 pin that meet little process chip IC in the cpu circuit (7) after an end of resistance R 12 is connected; First fixed contact of change over switch SW3 and 32 pin that meet little process chip IC in the cpu circuit after an end of resistance R 13 is connected; Second fixed contact of change over switch SW3 and 31 pin that meet little process chip IC in the cpu circuit after an end of resistance R 14 is connected, the 3rd fixed contact of change over switch SW3 and 30 pin that meet little process chip IC in the cpu circuit after an end of resistance R 15 is connected, 2 fixed contacts of DIP switch DIP1 and 42 pin that meet little process chip IC in the cpu circuit after an end of resistance R 16 is connected; The other end of resistance R 5～R16 meets DC power supply+5V jointly, 2 moving contact common grounds of two COM contacts of the moving contact of change over switch SW1, code switch SW2, the moving contact of change over switch SW3 and DIP switch DIP1.

5. the controller of change over switch according to claim 1; It is characterized in that described position of the switch testing circuit (4) comprises optocoupler TL1, resistance R 3 and R4, a termination DC power supply+12V of resistance R 3,1 pin of another termination optocoupler TL1 of resistance R 3; 2 pin of optocoupler TL1 are connected with the change over switch status signal; 5 pin of little process chip IC in the one termination cpu circuit (7) of 3 pin of optocoupler TL1 and resistance R 4, another termination DC power supply+5V of resistance R 4, the 4 pin ground connection of optocoupler TL1.

6. the controller of change over switch according to claim 1; It is characterized in that described performance element (5) comprises relay K A1, KA2, KA3, KA4, triode Q1, Q2 and resistance R 17, R18; The end of resistance R 17, R18 connects 17 and 16 pin of little process chip IC in the cpu circuit (7) respectively; The other end of resistance R 17, R18 connects the base stage of triode Q1, Q2 respectively; The collector electrode of triode Q1, Q2 meets DC power supply+12V respectively; The emitter of triode Q1, Q2 is succeeded an end of electrical equipment KA1, KA2 coil respectively, and 2 moving contacts of relay K A1 meet DC power supply+48V jointly, and the normally opened contact in the normally-closed contact in first pair of fixed contact of relay K A1 and the second pair of fixed contact of relay K A1 is connected with 2 moving contacts of relay K A2 respectively; Normally-closed contact in first pair of fixed contact of relay K A2 is connected with an end of the coil of relay K A3; Normally opened contact in second pair of fixed contact of relay K A2 is connected with an end of the coil of relay K A4, and the other end of relay K A3, KA4 coil connects the conversion switch position signal, and other contacts in 2 pairs of fixed contacts of relay K A1, KA2 are all unsettled; 2 moving contacts of relay K A3 are connected with two inlet wire 1L, the 1N of power supply commonly used; 2 fixed contacts of relay K A3 are connected the back respectively and insert change over switch with 2 moving contacts of relay K A4,2 fixed contacts of relay K A4 are connected the other end common ground of the coil of relay K A1, KA2 with two inlet wire 2L, the 2N of stand-by power supply.

7. the controller of change over switch according to claim 1; It is characterized in that described display circuit (6) is made up of display module LED, 8 pin of display module LED and 9 pin connect the DC voltage-stabilizing chip U8 in the power circuit (1), the Vout end of U3 respectively, and 10 pin connect the conversion switch position signal; The 1-5 pin connects 40,39,38,37,36 pin of microprocessor chip IC respectively; 6 pin meet DC power supply+5V, and 12 pin meet DC power supply+12V, 7 pin ground connection.

8. the controller of change over switch according to claim 1; It is characterized in that described cpu circuit (7) comprises little process chip IC, the chip U5 that resets, power supply chip U6, crystal oscillator CRY, resistance R 19 and capacitor C 1, C2; One end of resistance R 19 and 7 pin of little process chip IC are connected; The other end of resistance R 19 is connected with the RST pin of the chip U5 that resets; The end of crystal oscillator CRY is connected with 8 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; 46 pin of little process chip IC are connected with the OUT pin of power supply chip U6, and the VCC pin of 11 pin of little process chip IC, 47 pin, the chip U5 that resets, the INP pin of power supply chip U6 meet DC power supply+5V jointly, the other end common ground of the GND pin of 9 pin of little process chip IC, 44 pin, the chip U5 that resets, the GND pin of power supply chip U6, capacitor C 1, C2.

9. the controller of change over switch according to claim 1; It is characterized in that described generation control circuit (8) comprises triode Q3～Q5, resistance R 23～R25 and relay K A5～KA7; The end of resistance R 23～R25 connects 15,14,13 pin of little process chip IC in the cpu circuit (7) respectively; The other end of resistance R 23～R25 is connected with the base stage of triode Q3～Q5 respectively, and the emitter of triode Q3～Q5 is connected with an end of the coil of relay K A5～KA7 respectively, and generator is inserted in the contact of relay K A5～KA7; The collector electrode of triode Q3～Q5 meets DC power supply+12V jointly, the other end common ground of the coil of relay K A5～KA7.