CN2660784Y

CN2660784Y - Special chip microcomputer controller for starting cabinet

Info

Publication number: CN2660784Y
Application number: CN 03205408
Authority: CN
Inventors: 太正勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-07-25
Filing date: 2003-07-25
Publication date: 2004-12-01
Anticipated expiration: 2013-07-25

Abstract

A single chip micro-computer controller for starting counter is characterized in that the controller consists of a shell, a judge processing circuit, a dial switch circuit, a photoelectric isolation starting control circuit, a load screening circuit, a relay output circuit, a response circuit, a hypotensive rectifier and a filter regulator circuit. All of the circuits are integrated on one circuit board, the circuit board is arranged in the shell, and the controller integrates the starting, delay and load screening of the control counter and the control counter finishes motor starting according to time principle, with safe and reliable operation and simple and convenient wiring connection.

Description

The special-purpose singlechip controller of starting cabinet

Technical field: the special-purpose singlechip controller of a kind of starting cabinet belongs to automatic controller.

Background technology: traditional motor is star-like-triangular form starting, self-coupling decompression starting, forms by institutes such as the time relay, auxiliary relays, its wiring is numerous and diverse, the assembly work amount is big, the wire rod consumption is useless many, and the time relay is adjusted difficulty, particularly subtracts in the starting cabinet at self coupling, voltage decline abruptly is to the AC contactor power down is discharged, the self-coupling decompression transformer seals in the circuit for a long time and moves, and causes damage, causes economic loss and production loss thus.

Summary of the invention: the purpose of this utility model provides the special-purpose singlechip controller of a kind of starting cabinet, it can not only allow starting cabinet by outside the time principle starting, and can screen motor and return star-like state operation when unloaded, economize on electricity significantly, and saved auxiliary relay, the time relay and a large amount of wire rods, it is more reliable to make the starting cabinet assembling greatly simplify operation.

The utility model is achieved in that by shell, judgment processing circuit, toggle switch circuit, photoelectricity isolation start control circuit, load discriminator circuit, relay output circuit, step-down rectifier, filter regulator circuit, news and rings circuit and form, all circuit are integrated on the circuit board, and circuit board places shell.

Because the watchdog function of special-purpose singlechip controller internal electric source voltage stabilizing of starting cabinet and single-chip microcomputer, the instantaneous AC contactor that falls of voltage can not discharge yet, and burns phenomenon so just stopped the self-coupling decompression transformer.

Description of drawings: Fig. 1 is a shape assumption diagram of the present utility model, and Fig. 2 is circuit theory diagrams of the present utility model.

Among Fig. 1,1 is shell, and 2 is indicator light, and 3 is last row's wiring hole, and 4 for arranging wiring hole down.

Among Fig. 2, A is the judgment processing circuit, and B is the toggle switch circuit, and C is that photoelectricity is isolated start control circuit, and D is the load discriminator circuit, and E is the relay output circuit, and F is step-down rectifier, filter regulator circuit, and G rings circuit for news.

Below in conjunction with accompanying drawing the utility model is elaborated.

Embodiment: the special-purpose singlechip controller of starting cabinet, by shell (1), judgment processing circuit (A), toggle switch circuit (B), photoelectricity is isolated start control circuit (C), load discriminator circuit (D), relay output circuit (E), step-down rectifier, filter regulator circuit (F), news are rung circuit (G) and are formed, all circuit are integrated on the circuit board, circuit board places shell (1), indicator light (2) is arranged on the shell (1), two rows wiring hole (3) is arranged, (4), arrange wiring hole (4) down 1., 2. the hole is connected with current transformer LH, 3. the hole is connected with starting button SB1,4. the hole is connected with stop button SB2,5. the hole is connected with thermal protector RF, 6. the hole meets GND, last row's wiring hole (3) 1., 3., 5. hole phase-connecting wire, 2. the hole connects center line, 4. the hole meets A.C. contactor KM1,6. the hole meets A.C. contactor KM3, judgment processing circuit (A) composed as follows: write control program IC1 single chip computer AT 90S1200 the 2nd, 3 pin respectively with relay output circuit (E) in D5, the positive pole of D6 connects, 6,7,8 pin and photoelectricity are isolated IC4 in the start control circuit (C), IC5,3 pin of IC6 connect, 9 pin are connected with C5 positive pole in the load discriminator circuit (D), 11 pin ring the middle R6 of circuit (G) with news and are connected, 12,13,14,15,16,17,18,19 pin respectively with toggle switch circuit (B) in the pin 1 of toggle switch S1,2,3,4,5,6,7,8 connect, 10 pin meet GND, and 1,20 pin connect+5V; (B) is composed as follows for the toggle switch circuit: the 1-8 pin of toggle switch S1 is connected with the pin 12,13,14,15,16,17,18,19 of single chip computer AT 90S1200 in the judgment processing circuit (A) respectively, and the 9-16 pin meets GND; Photoelectricity is isolated the composed as follows of start control circuit (C): R3, R4, R5 one termination+5V, the other end connects 1 pin of optocoupler IC4, IC5, IC6 respectively, 2 pin of IC4, IC5, IC6 are connected with heat protection RF, starting button SB1, stop button SB2 by CON2 respectively, 3 pin of IC4, IC5, IC6 are connected with the pin 6,7,8 of single chip computer AT 90S1200 in the judgment processing circuit (A), and 4 pin meet GND; The load discriminator circuit (D) composed as follows: 6 pin of IC3, the positive pole of capacitor C 5 and resistance R 8 link to each other with the pin 9 of single chip computer AT 90S1200 in the judgment processing circuit (A), resistance R 8, electrochemical capacitor C5 connects, the end of R8 is connected with+5V, 2 pin of IC3 are connected with P1, P1 one end is connected with+5V, other end ground connection, the positive pole of 3 pin of IC3 and R9 and electrochemical capacitor C6, resistance R 10, the negative pole of diode D3 connects, the positive pole of D3, the negative pole of D4 through CON3 again be serially connected in main circuit in current transformer LH be connected, the positive pole of D4, resistance R 10, the negative pole of C6, the negative pole of C5 meets GND, and 7 pin of IC3 are connected with+5V; Relay output circuit (E) composed as follows: the positive pole of D5, D6 is connected with single chip computer AT 90S1200 pin 2,3 in the judgment processing circuit (A) respectively, the negative pole of D5 is connected with the base stage of Q1 by resistance R 1, the negative pole of D6 is connected with the base stage of Q2 by resistance R 2, the emitter of Q1, Q2 meets GND, the collector electrode of Q2 and J2, D2 polyphone, J2 and D2 also connect, one termination that J2 links to each other with D2+12V, the collector electrode of Q1 and J1, D1 polyphone, J1 and D1 also connect, one termination that J2 links to each other with D2+12V, the contact of J1, J2 is by the external A.C. contactor KM1 of CON1, KM3; News are rung the composed as follows of circuit (G): R6 one end is connected with the pin 11 of AT90S1200 in the judgment processing circuit (A), and an end is connected with the Q3 base stage, and the emitter of Q3 meets GND, and collector electrode meets JT and interrogates Chinese percussion instrument, interrogates Chinese percussion instrument other end JT and is connected with+5V; Power supply step-down, rectification, filtering, voltage stabilizing circuit (F) composed as follows: transformer B1 input is connected with power supply by the binding post CON1 in the relay output circuit (E), output is connected with 1,3 pin of bridge heap WO4,2 pin of WO4 are connected+the 12V power supply with 1 pin of electrochemical capacitor C1, capacitor C 2 and IC27805,3 pin of IC27805 are connected with C3, C4+the 5V power supply, ground connection after 2 pin of C1, C2, IC27805, the other end of C3, C4 link to each other with 4 pin of WO4, C1, C2, C3, C4 also connect, R7 one termination+5V, a termination D6 luminous tube meets GND again.

The operation principle of this controller is: select the S1 toggle switch to set the starting delay time, the 8th selection that is used for star-like-triangular form or self-coupling decompression starting of toggle switch, when the special-purpose singlechip controller of starting cabinet powers on, the D7 luminous tube is bright, power on to show, single-chip microcomputer internal reset place operating state is waited for instruction, pressing the SB1 starting button makes IC1 single-chip microcomputer the 7th pin become low level from high level through optocoupler IC5, the 2nd pin output high level, the D5 luminous tube is bright, through R1, Q1 turn-on relay J1 adhesive, external KM1, the KM2 adhesive, motor starting, 3 pin output high level D6 luminous tube by starting time-delay back IC1 single-chip microcomputer is bright, through R2, Q2 turn-on relay J2 adhesive, external KM3 adhesive, the KM2 dead electricity enters the triangular form operation.Return star-like operation when transferring the P1 resistance to make empty load of motor, LH current transformer sampling current lowers when motor is unloaded, and the voltage that conversion is come will lower, supply than the school to 2 pin of IC3 through R9 through D3, D4 rectification, if the 2 pin voltages of IC3 are lower than 3 pin than school voltage, 6 pin output low levels, 9 pin of IC1 single-chip microcomputer become low level, the 3rd pin output low level, the D6 luminous tube goes out, and Q2 ends, and relay J 2 discharges, external KM3 discharges, the KM2 adhesive.LH current transformer sampling current increases when motor has load, the voltage that conversion is come will increase, supply than the school to 2 pin of IC3 through R9 through D3, D4 rectification, if the 2 pin voltages of IC3 are higher than 3 pin than school voltage, 6 pin are just exported high level, 9 pin of IC1 single-chip microcomputer become high level, tripod output high level D6 luminous tube is bright, Q2 conducting, relay J 2 adhesives, external KM3 adhesive, KM2 discharges and enters the triangular form running status again.Above-mentioned these processes all are just to carry out after escaping the motor starting time-delay.Make IC1 single-chip microcomputer the 8th pin become low level from high level through optocoupler IC6 after pressing the SB2 stop button, the 2nd, 3 pin become low level simultaneously, and D5, D6 luminous tube go out, and Q1, Q2 end, and J1, J2 relay discharge, and external KM1, KM2, KM3 contactor discharge.Shut down.RF is the normally opened contact of overtemperature relay; as long as motor protection takes place; repeat above-mentioned stopping process; IC1 single-chip microcomputer 11 pin output high level is through R6, Q3 conducting news Chinese percussion instrument long time of alarm; and locked, the cut-out microcontroller power supply of only fixing a breakdown dissolves by itself, and is the application that adapts to self-coupling decompression starting cabinet; prevent that the electromagnetism arcing from damaging ac contactor contact, the IC1 single-chip microcomputer has the time difference in 4 seconds when changing under the effect of software.

Claims

1, the special-purpose singlechip controller of starting cabinet, it is characterized in that by shell, judgment processing circuit (A), toggle switch circuit (B), photoelectricity is isolated start control circuit (C), load discriminator circuit (D), relay output circuit (E), step-down rectifier, filter regulator circuit (F), news sound circuit (G) composition, all circuit are integrated on the circuit board, and circuit board places shell.

2, the special-purpose singlechip controller of starting cabinet according to claim 1, it is characterized in that the composed as follows of judgment processing circuit (A): write control program IC1 single chip computer AT 90S1200 the 2nd, 3 pin respectively with relay output circuit (E) in D5, the positive pole of D6 connects, 6,7,8 pin and photoelectricity are isolated IC4 in the start control circuit (C), IC5,3 pin of IC6 connect, 9 pin are connected with C5 positive pole in the load discriminator circuit (D), 11 pin ring the middle R6 of circuit (G) with news and are connected, 12,13,14,15,16,17,18,19 pin respectively with toggle switch circuit (B) in the pin 1 of toggle switch S1,2,3,4,5,6,7,8 connect, 10 pin meet GND, and 1,20 pin connect+5V.

3, the special-purpose singlechip controller of starting cabinet according to claim 1, it is characterized in that toggle switch circuit (B) is composed as follows: the 1-8 pin of toggle switch S1 is connected with the pin 12,13,14,15,16,17,18,19 of single chip computer AT 90S1200 in the judgment processing circuit (A) respectively, and the 9-16 pin meets GND.

4, the special-purpose singlechip controller of starting cabinet according to claim 1; it is characterized in that the composed as follows of photoelectricity isolation start control circuit (C): R3, R4, R5 one termination+5V; the other end connects 1 pin of optocoupler IC4, IC5, IC6 respectively; 2 pin of IC4, IC5, IC6 are connected with heat protection RF, starting button SB1, stop button SB2 by CON2 respectively; 3 pin of IC4, IC5, IC6 are connected with the pin 6,7,8 of single chip computer AT 90S1200 in the judgment processing circuit (A), and 4 pin meet GND.

5, the special-purpose singlechip controller of starting cabinet according to claim 1,6 pin of the composed as follows of discriminator circuit (D): IC3 is characterized in that loading, the positive pole of capacitor C 5 and resistance R 8 link to each other with the pin 9 of single chip computer AT 90S1200 in the judgment processing circuit (A), resistance R 8, electrochemical capacitor C5 connects, the end of R8 is connected with+5V, 2 pin of IC3 are connected with P1, P1 one end is connected with+5V, other end ground connection, the positive pole of 3 pin of IC3 and R9 and electrochemical capacitor C6, resistance R 10, the negative pole of diode D3 connects, the positive pole of D3, the negative pole of D4 through CON3 again be serially connected in main circuit in current transformer LH be connected, the positive pole of D4, resistance R 10, the negative pole of C6, the negative pole of C5 meets GND, and 7 pin of IC3 are connected with+5V.

6, the special-purpose singlechip controller of a kind of starting cabinet according to claim 1, it is characterized in that the composed as follows of relay output circuit (E): D5, the positive pole of D6 respectively with judgment processing circuit (A) in single chip computer AT 90S1200 pin 2,3 connect, the negative pole of D5 is connected with the base stage of Q1 by resistance R 1, the negative pole of D6 is connected with the base stage of Q2 by resistance R 2, Q1, the emitter of Q2 meets GND, the collector electrode of Q2 and J2, the D2 polyphone, J2 and D2 also connect, one termination that J2 links to each other with D2+12V, the collector electrode of Q1 and J1, the D1 polyphone, J1 and D1 also connect, one termination that J2 links to each other with D2+12V, J1, the contact of J2 is by the external A.C. contactor KM1 of CON1, KM3.

7, the special-purpose singlechip controller of a kind of starting cabinet according to claim 1, it is characterized in that step-down rectifier, filter regulator circuit (F) composed as follows: transformer B1 input is connected with power supply by the binding post CON1 in the relay output circuit (E), 1 of output and bridge heap WO4,3 pin connect, 2 pin of WO4 and electrochemical capacitor C1,1 pin of capacitor C 2 and IC27805 is connected+the 12V power supply, 3 pin and the C3 of IC27805, C4 is connected+the 5V power supply, C1, C2,2 pin of IC27805, C3, ground connection after the other end of C4 links to each other with 4 pin of WO4, C1, C2, C3, C4 also connects, R7 one termination+5V, a termination D6 luminous tube meets GND again.

8, the special-purpose singlechip controller of a kind of starting cabinet according to claim 1, it is characterized in that interrogating and ring the composed as follows of circuit (G): R6 one end is connected with the pin 11 of AT90S1200 in the judgment processing circuit (A), one end is connected with the Q3 base stage, the emitter of Q3 meets GND, collector electrode connects JT news Chinese percussion instrument, and news Chinese percussion instrument other end JT is connected with+5V.

9, the special-purpose singlechip controller of a kind of starting cabinet according to claim 1; it is characterized in that indicator light is arranged on the shell, the two rows binding post is arranged; arrange down binding post 1., 2. the hole is connected with current transformer LH, 3. the hole is connected with starting button SB1,4. the hole is connected with stop button SB2; 5. the hole is connected with thermal protector RF; 6. the hole meets GND, on arrange binding post 1., 3., 5. hole phase-connecting wire, 2. the hole connects center line; 4. the hole meets A.C. contactor KM1, and 6. the hole meets A.C. contactor KM3.