CN100547507C - Fast heating intelligent leadless welding table controller and control method thereof - Google Patents
Fast heating intelligent leadless welding table controller and control method thereof Download PDFInfo
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- CN100547507C CN100547507C CNB200710130978XA CN200710130978A CN100547507C CN 100547507 C CN100547507 C CN 100547507C CN B200710130978X A CNB200710130978X A CN B200710130978XA CN 200710130978 A CN200710130978 A CN 200710130978A CN 100547507 C CN100547507 C CN 100547507C
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Abstract
Fast heating intelligent leadless welding table controller of the present invention and control method thereof relate to a kind of employing single-chip microcomputer and make temperature controlled fast heating intelligent leadless welding table controller of digital PID and control method thereof.Controller comprises thermopair amplifying circuit, cold junction compensation circuit, single-chip microcomputer, overtemperature and failure detector circuit, buzzer alarm circuit, relay and driving circuit thereof, silicon control zero-cross trigger circuit, LED charactron display circuit, regulator rectifier circuit, keyboard input circuit; (form by R9～R12), electric capacity (C4), amplifier (IC2A) by resistance for the thermopair amplifying circuit; (form by R4～R8), diode (D5), adjustable resistance (P1) by resistance for cold junction compensation circuit; (R13～R16), amplifier (IC2B) are formed by resistance for overtemperature and failure detector circuit; (form by R21～R24), controllable silicon optocoupler (IC4), triode (N4), controllable silicon (T) by resistance for the silicon control zero-cross trigger circuit; LED charactron display circuit is by resistance (R26～R35), triode (N5～N7), charactron (A1～A3) form.
Description
Technical field
What fast heating intelligent leadless welding table controller of the present invention and control method thereof related to is that a kind of employing single-chip microcomputer is made temperature controlled fast heating intelligent leadless welding table controller of digital PID and control method thereof.Belong to soldering electric soldering iron field.
Background technology
Electric soldering iron has a large amount of usable range on the commercial production of electronics industry instrument and meter, exist the defective that it is poor that heating is risen again slowly for a long time, particularly along with the widespread use of pb-free solder, the electrothermal calefactive rate of traditional type of heating can not satisfy welding requirements far away.The flatiron (comprising the welding stage type soldering iron) of adapted to leadless welding all requires the solder horn of heating power more than 90 watts and less thermal capacity, very fast heat conduction velocity usually, makes the temperature of solder horn be not easy control accurately.Simultaneously, because the solder horn of big heating power and little thermal capacity, solder horn just can burn red and burn at short notice when breaking down, and reaches more than eight or nine hundred degree, is prone to accidents.Empty burning reduction of service life greatly when solder horn does not use.
Summary of the invention
The present invention seeks to provides a kind of fast heating intelligent leadless welding table controller and control method thereof at above-mentioned weak point, adopt single-chip microcomputer to make temperature controlled fast heating intelligent leadless welding table controller of digital PID and control method thereof, make solder horn little in the simultaneous temperature overshoot that heats up and the speed of rising again is exceedingly fast, constant temperature precision height, can cut off heating and warning in the time of fault, cooling when idle prevents that the sky of solder horn from burning, and prolongs the serviceable life of solder horn.
Fast heating intelligent leadless welding table controller and control method thereof are to take following mode case to realize: fast heating intelligent leadless welding table controller comprises thermopair amplifying circuit, cold junction compensation circuit, single-chip microcomputer, reference voltage circuit, overtemperature and failure detector circuit, buzzer alarm circuit, relay and driving circuit thereof, silicon control zero-cross trigger circuit, LED charactron display circuit, regulator rectifier circuit, keyboard input circuit, reference voltage circuit.
The thermopair amplifying circuit is made up of resistance R 9～R12, capacitor C 4, amplifier IC2A.Cold junction compensation circuit is made up of resistance R 4～R8, diode D5, adjustable resistance P1.Single-chip microcomputer IC5 adopts the PIC16F819 single-chip microcomputer.Reference voltage circuit is made up of resistance R 1～R3, voltage reference IC3, adjustable resistance P2, capacitor C 6 etc.Overtemperature and failure detector circuit are made up of resistance R 13～R16, amplifier IC2B.Buzzer alarm circuit is made up of resistance R 17, triode N1, hummer B.Relay and driving circuit thereof are made up of resistance R 18～R20, triode N2, N3, diode D6, relay J.The silicon control zero-cross trigger circuit are made up of resistance R 21～R24, controllable silicon optocoupler IC4, triode N4, controllable silicon T.LED charactron display circuit is made up of resistance R 26～R35, triode N5～N7, charactron A1～A3.Regulator rectifier circuit is made up of diode D1～D4, capacitor C 1～C3, regulator block IC1.The keyboard input circuit is made up of microswitch S1～S3, resistance R 38.Reference voltage circuit is made up of resistance R 1, voltage reference IC3.
The control method of fast heating intelligent leadless welding table controller is: the thermopair amplifying circuit amplifies the Thermocouple Temperature Signal in the solder horn, cold junction compensation circuit compensates the thermocouple signal error that environment temperature causes, the A/D convertor circuit that Thermocouple Temperature Signal after the amplification enters in the single-chip microcomputer is converted to digital signal, single-chip microcomputer calculates the gating pulse time scale according to the difference of design temperature and measurement temperature, by the size of silicon control zero-cross trigger circuit control flatiron heater heating power; Single-chip microcomputer send the LED charactron to carry out the numeral demonstration real time temperature signal of gathering simultaneously.Other one tunnel thermocouple signal after amplifying enters overtemperature and failure detector circuit, if output signal makes buzzer alarm circuit report to the police when overtemperature and fault occurring, output signal disconnects relay simultaneously, cuts off heating power supply.
Fast heating intelligent leadless welding table controller of the present invention and control method thereof adopt the digital PID temperature-adjusting circuit of single-chip microcomputer PIC16F819 control, in the solder horn temperature during near design temperature, heating power with time proportional control technology control heater, make the be raised to design temperature of solder horn temperature near no overshoot, after arriving design temperature, heater is under a lower heating power, make the temperature fluctuation range of solder horn less, and in the time of solder horn temperature departure design temperature, single-chip microcomputer is by detecting the size of thermocouple signal intelligent decision heating power, make that also can not to depart from design temperature in the temperature recovery process excessive, thereby guarantee the precision of constant temperature.Simultaneously, adopt when not busy dormant circuit can reduce energy resource consumption and prolong solder horn serviceable life, failure detector circuit can guarantee the safety used more.
Fast heating intelligent leadless welding table controller and control method thereof adopt digital PID (ratio, integration, differential) solder horn temperature-control circuit and the independent overtemperature that adds and the sleep mode of fault secure circuit and idle condition of single-chip microcomputer PIC16F819 control.Make solder horn little, constant temperature precision height in the simultaneous temperature overshoot that heats up and the speed of rising again is exceedingly fast.If can cut off heating power supply and audio communication when having unexpected situation to break down automatically reports to the police.A period of time can not reduced the solder horn temperature after not using flatiron automatically, prevents that the sky of solder horn from burning, and prolongs the serviceable life of solder horn.
Fast heating intelligent leadless welding table controller and control method thereof adopt the silicon control zero-cross trigger circuit to the temperature control of solder horn, regulate the heating power of solder horn with the time ratio, and heating power is controlled by the digital PID algorithm, thereby reach heat up and simultaneous temperature overshoot that the speed of rising again is exceedingly fast little, the effect that the constant temperature precision is high.
Fast heating intelligent leadless welding table controller and control method thereof adopt additional independent protective circuit; when chance failures such as welding stage generation thermopair open circuit, controllable silicon short circuit, can disconnect relay J; cut off the heating power supply of solder horn; and send audio communication and report to the police, thereby remind staff's maintenance and prevent bigger fault or accident.
The sleep mode of the idle condition of fast heating intelligent leadless welding table controller, temperature when welding by the built-in thermopair perception of solder horn is fallen, thereby judge the operating position of welding stage, at certain hour (as 20 minutes) when not using welding stage, welding stage is automatically brought to the dormant state of lower temperature, can effectively prolong the serviceable life of solder horn.
Description of drawings
The invention will be further described below with reference to accompanying drawing.
Fig. 1 is the control circuit block diagram of fast heating intelligent leadless welding table controller.
Fig. 2 is the control circuit schematic diagram 1 of fast heating intelligent leadless welding table controller.
Fig. 3 is the control circuit schematic diagram 2 of fast heating intelligent leadless welding table controller.
Embodiment
With reference to accompanying drawing 1～3, fast heating intelligent leadless welding table controller comprises thermopair amplifying circuit, cold junction compensation circuit, single-chip microcomputer, reference voltage circuit, overtemperature and failure detector circuit, buzzer alarm circuit, relay and driving circuit thereof, silicon control zero-cross trigger circuit, LED charactron display circuit, regulator rectifier circuit, keyboard input circuit, reference voltage circuit.
The thermopair amplifying circuit is made up of resistance R 9～R12, capacitor C 4, amplifier IC2A, thermopair RD.Cold junction compensation circuit is made up of resistance R 4～R8, diode D5, adjustable resistance P1.Single-chip microcomputer IC5 adopts the PIC16F819 single-chip microcomputer.Reference voltage circuit is made up of resistance R 1～R3, voltage reference IC3, adjustable resistance P2, capacitor C 6.Overtemperature and failure detector circuit are made up of resistance R 13～R16, amplifier IC2B.Buzzer alarm circuit is made up of resistance R 17, triode N1, hummer B.Relay and driving circuit thereof are made up of resistance R 18～R20, triode N2, N3, diode D6, relay J.The silicon control zero-cross trigger circuit are made up of resistance R 21～R24, controllable silicon optocoupler IC4, triode N4, controllable silicon T.LED charactron display circuit is made up of resistance R 26～R35, triode N5～N7, charactron A1～A3.Regulator rectifier circuit is made up of diode D1～D4, capacitor C 1～C3, regulator block IC1.The keyboard input circuit is made up of microswitch S1～S3, resistance R 38.Reference voltage circuit is made up of resistance R 1, voltage reference IC3.
In the controller circuitry of fast heating intelligent leadless welding table controller, one group of voltage V1 of power transformer output links to each other with diode D1～D4, diode D1～D4 and capacitor C 1, C2 links to each other, capacitor C 1, C2 links to each other with 1 pin of regulator block IC1,3 pin of regulator block IC1 and resistance R 24, capacitor C 3, resistance R 1, R25, R14, capacitor C 5, resistance R 19, diode D6, relay J, hummer B, 8 pin of amplifier IC2A, 14 pin of single-chip microcomputer IC5, capacitor C 9, C10, triode N5, N6, N7 links to each other, 2 pin of regulator block IC1 and capacitor C 1, C2, C3, triode N1～N4, resistance R 15, light emitting diode L1, capacitor C 9, C10, resistance R 38,5 pin of single-chip microcomputer IC5 link to each other; 4 pin of amplifier IC2A link to each other with 1 pin of capacitor C 4, resistance R 11, R8, diode D5, resistance R 5, voltage reference IC3, resistance R 3, single-chip microcomputer IC5; 18 pin (VCTL) of single-chip microcomputer IC5 link to each other with resistance R 21, and resistance R 21 links to each other with triode N4, and triode N4 links to each other with 2 pin of controllable silicon optocoupler IC4, and 1 pin of controllable silicon optocoupler IC4 links to each other with resistance R 24; Another group output voltage V 2 of power transformer is connected to the normally opened contact of load RL and relay J, load RL is connected to resistance R 22 and controllable silicon T, controllable silicon T is connected to the normally opened contact of resistance R 23 and relay J, and resistance R 23 and resistance R 22 are connected to 4 pin and 6 pin of controllable silicon optocoupler IC4; The anode RD+ of thermocouple sensor is connected to resistance R 9 and resistance R 25 in the solder horn, the negative terminal RD-of thermocouple sensor is connected to resistance R 5 and adjustable resistance P1, resistance R 1 is connected to resistance R 2, R4 and resistance R 6, resistance R 2 is connected to adjustable resistance P2, adjustable resistance P2 is connected to the 2 pin REF+ of single-chip microcomputer IC5 and capacitor C 6, resistance R 3, and resistance R 3 is connected to the 1 pin REF-of single-chip microcomputer IC5; Resistance R 4 is connected to adjustable resistance P1, adjustable resistance P1 is connected to the negative terminal RD-of resistance R 5 and thermocouple sensor, resistance R 6 is connected to diode D5 and resistance R 7, resistance R 7 is connected to resistance R 8 and resistance R 10, resistance R 10 is connected to 2 pin and the resistance R 12 of amplifier IC2A, resistance R 12 is connected to 1 pin of amplifier IC2A and capacitor C 4, resistance R 13, and resistance R 2 is connected to the anode RD+ of resistance R 9 and thermocouple sensor, and resistance R 9 is connected to 3 pin of resistance R 11 and amplifier IC2A; Resistance R 14 and capacitor C 5 are connected to 6 pin of resistance R 15 and amplifier IC2B, resistance R 13 is connected to 5 pin of resistance R 16 and amplifier IC2B, resistance R 16 is connected to resistance R 7 and resistance R 18, resistance R 17 is connected to triode N1, triode N1 is connected to hummer B, and resistance R 18 is connected to triode N2, and triode N2 is connected to resistance R 19 and resistance R 20, resistance R 20 is connected to triode N3, and triode N3 is connected to diode D6 and relay J;
1 pin and 2 pin of single-chip microcomputer IC5 are connected to capacitor C 6,1 pin of single-chip microcomputer IC5 is connected to 5 pin of single-chip microcomputer IC5,3 pin of single-chip microcomputer IC5 are connected to resistance R 26, resistance R 26 is connected to triode N5, triode N5 is connected to charactron A1,16 pin of single-chip microcomputer IC5 are connected to resistance R 34, resistance R 34 is connected to triode N6, triode N6 is connected to charactron A3,15 pin of single-chip microcomputer IC5 are connected to resistance R 35, resistance R 35 is connected to triode N7, triode N7 is connected to charactron A2,6～12 pin of single-chip microcomputer IC5 are connected respectively to resistance R 27～R33, resistance R 27～R33 is connected respectively to 3～9 pin of charactron A1～A3, resistance R 27～R29 is connected respectively to microswitch S1～S3, microswitch S1～S3 is connected to resistance R 38, resistance R 38 is connected to GND, 17 pin of single-chip microcomputer IC5 are connected to resistance R 36, capacitor C 7 and capacitor C 8, resistance R 36 is connected to 1 pin (VT) of amplifier IC2A, 18 pin of single-chip microcomputer IC5 are connected to resistance R 37 and VCTL, resistance R 37 is connected to light emitting diode L1, and light emitting diode L1 is connected to GND (ground connection).
With reference to accompanying drawing 2,3, in the control circuit of fast heating intelligent leadless welding table controller:
Resistance R 1 and voltage reference IC3 such as figure connect and compose the 2.5V reference voltage circuit, resistance R 4～R8, diode D5, adjustable resistance P1 such as accompanying drawing connect and compose the cold junction compensation circuit, resistance R 25 1 ends are connected with+5V power supply, and the other end is connected with the thermopair anode, constitute disconnected coupling testing circuit.Resistance R 9～R12, capacitor C 4, amplifier IC2A such as accompanying drawing connect and compose the thermopair amplifying circuit, the temperature signal VT one tunnel of the amplification of output with by capacitor C 7, C8, the filtering circuit filtering that resistance R 36 is formed links to each other, filtered signal links to each other with 17 pin of single-chip microcomputer IC5 and does the A/D conversion, another road with by resistance R 13～R16, amplifier IC2B constitutes failure detector circuit and links to each other, by the fault detection signal one tunnel of 1 pin of amplifier IC2B output with by resistance R 17, triode N1, the buzzer alarm circuit that hummer B constitutes links to each other, another road with by resistance R 18～R20, triode N2, N3, diode D6, relay that relay (J) constitutes and driving circuit thereof link to each other, the temperature control signals of the 18 pin output of single-chip microcomputer IC4 is connected to by resistance R 21～R24, controllable silicon optocoupler IC4, triode N4, the silicon control zero-cross trigger circuit that controllable silicon T constitutes, resistance R 2, R3, adjustable resistance P2 forms the reference voltage of A/D conversion, diode D1～D4, capacitor C 1～C3, regulator block IC1 constitutes regulator rectifier circuit, for control circuit provides+the 5V direct supply.Amplifier IC2A and amplifier IC2B can adopt LM358 type operational amplifier integrated chip.Voltage reference IC3 adopts the TL431 integrated package of pressure-stabilizing.
Single-chip microcomputer IC5 is single-chip microcomputer PIC16F819,3,6～12,15,16 pin link to each other with three LED charactron display circuits being made up of resistance R 26～R35, triode N5～N7, charactron A1～A3, microswitch S1～S3, resistance R 38 link to each other with 6～8 pin of single-chip microcomputer by resistance R 27～R29 and constitute the keyboard input circuit, capacitor C 9～C10 is an electric source filter circuit, and resistance R 37, luminotron L1 are the heated condition indicating circuit.Capacitor C 6 is the filter capacitor of the reference voltage of A/D conversion.
The control method of fast heating intelligent leadless welding table controller is: the thermopair amplifying circuit amplifies the thermopair RD temperature signal in the solder horn, cold junction compensation circuit compensates the thermocouple signal error that environment temperature causes, the A/D convertor circuit that Thermocouple Temperature Signal after the amplification enters in the single-chip microcomputer IC5 is converted to digital signal, single-chip microcomputer IC5 calculates the gating pulse time scale according to the difference of design temperature and measurement temperature, by the size of silicon control zero-cross trigger circuit control flatiron heater heating power; Single-chip microcomputer IC5 send the LED charactron to carry out the numeral demonstration real time temperature signal of gathering simultaneously.Other one tunnel thermocouple signal after amplifying enters overtemperature and failure detector circuit, if output signal makes buzzer alarm circuit report to the police when overtemperature and fault occurring, output signal disconnects relay simultaneously, cuts off heating power supply.
Thermopair RD in the solder horn delivers to single-chip microcomputer IC5 with the voltage signal that temperature signal is converted to the millivolt level after thermocouple amplifier amplifies.Diode D5 is as the cold junction compensation of thermopair.Resistance R 24 is the resistance of hanging oneself, and makes the output of amplifier reach the highest under the situation of thermopair open circuit.Amplifier IC2B is delivered on another road of temperature signal after the amplification, compares with setting protection value.Under the normal operation, the IC2B output low level, triode N1 ends, and hummer B is sounding not, and N2 ends simultaneously, the N3 conducting, the adhesive of relay J normally opened contact, heating power supply is controlled by controllable silicon T.The control signal VCTL of accompanying drawing 3 single-chip microcomputer IC5 output is by N4 control zero cross fired controllable silicon optocoupler IC4 (MOC3041), and controllable silicon optocoupler IC4 can adopt MOC3041 type controllable silicon optocoupler.Controllable silicon optocoupler IC4 control bidirectional triode thyristor T, the heating of T control solder horn.If break down (thermopair open circuit or solder horn temperature are too high), IC2B exports high level and feeds back to positive input terminal by resistance R 16, makes the high level locking, triode N1 conducting, hummer B audio communication is reported to the police, simultaneously the N2 conducting, N3 ends, and the relay J tip side is opened, and cuts off heating power supply.
17 pin of single-chip microcomputer IC5 are sent on another road of temperature signal after amplifying in the accompanying drawing 3, IC5 is by built-in A/D convertor circuit collecting temperature signal and calculate temperature, with temperature be set relatively obtain temperature difference, obtain exporting control signal VCTL by the PID computing, VCTL outputs to and does to add heat control among Fig. 2.The L1 light emitting diode is as the heating indication.A1, A2, A3 are the LED charactrons, show as temperature.
Claims (2)
1, a kind of fast heating intelligent leadless welding table controller is characterized in that comprising thermopair amplifying circuit, cold junction compensation circuit, single-chip microcomputer IC5, overtemperature and failure detector circuit, buzzer alarm circuit, relay and driving circuit thereof, silicon control zero-cross trigger circuit, LED charactron display circuit, regulator rectifier circuit, keyboard input circuit, reference voltage circuit;
The thermopair amplifying circuit is made up of resistance R 9, resistance R 10, resistance R 11, resistance R 12, capacitor C 4, amplifier IC2A, thermopair RD; Cold junction compensation circuit is made up of resistance R 4, resistance R 5, resistance R 6, resistance R 7, resistance R 8, diode D5, adjustable resistance P1; Overtemperature and failure detector circuit are made up of resistance R 13, resistance R 14, resistance R 15, resistance R 16, amplifier IC2B; Buzzer alarm circuit is made up of resistance R 17, triode N1, hummer B; Relay and driving circuit thereof are made up of resistance R 18, resistance R 19, resistance R 20, triode N2, triode N3, diode D6, relay J; The silicon control zero-cross trigger circuit are made up of resistance R 21, resistance R 22, resistance R 23, resistance R 24, controllable silicon optocoupler IC4, triode N4, controllable silicon T; LED charactron display circuit by resistance R 26, resistance R 27, resistance R 28, resistance R 29, resistance R 30, resistance R 31, resistance R 32, resistance R 33,, resistance R 34, resistance R 35, triode N5, triode N6, triode N7, charactron A1, charactron A2, charactron A3 form; Regulator rectifier circuit is made up of diode D1, diode D2, diode D3, diode D4, capacitor C 1, capacitor C 2, capacitor C 3, regulator block IC1; The keyboard input circuit is made up of microswitch S1, microswitch S2, microswitch S3, resistance R 38; Reference voltage circuit is made up of resistance R 1, voltage reference IC3;
In controller circuitry, one group of voltage V1 of power transformer output and diode D1, diode D2, diode D3, diode D4 links to each other, diode D1, diode D2, diode D3, diode D4 and capacitor C 1, capacitor C 2 links to each other, capacitor C 1, capacitor C 2 links to each other with 1 pin of regulator block IC1,3 pin of regulator block IC 1 and resistance R 24, capacitor C 3, resistance R 1, resistance R 25, resistance R 14, capacitor C 5, resistance R 19, diode D6, relay J, hummer B, 8 pin of amplifier IC2A, 14 pin of single-chip microcomputer IC5, capacitor C 9, C10, triode N5, triode N6, triode N7 links to each other, 2 pin of regulator block IC1 and capacitor C 1, capacitor C 2, capacitor C 3, triode N1, triode N2, triode N3, triode N4, resistance R 15, light emitting diode L1, capacitor C 9, capacitor C 10, resistance R 38,5 pin of single-chip microcomputer IC5 link to each other; 4 pin of amplifier IC2A link to each other with 1 pin of capacitor C 4, resistance R 11, resistance R 8, diode D5, resistance R 5, voltage reference IC3, resistance R 3, single-chip microcomputer IC5; The 18 pin VCTL of single-chip microcomputer IC5 link to each other with resistance R 21, and resistance R 21 links to each other with triode N4, and triode N4 links to each other with 2 pin of controllable silicon optocoupler IC4, and 1 pin of controllable silicon optocoupler IC4 links to each other with resistance R 24; Another group output voltage V 2 of power transformer is connected to the normally opened contact of load RL and relay J, load RL is connected to resistance R 22 and controllable silicon T, controllable silicon T is connected to the normally opened contact of resistance R 23 and relay J, and resistance R 23 and resistance R 22 are connected to 4 pin and 6 pin of controllable silicon optocoupler IC4; The anode RD+ of thermocouple sensor is connected to resistance R 9 and resistance R 25 in the solder horn, the negative terminal RD-of thermocouple sensor is connected to resistance R 5 and adjustable resistance P1, resistance R 1 is connected to resistance R 2, resistance R 4 and resistance R 6, resistance R 2 is connected to adjustable resistance P2, adjustable resistance P2 is connected to the 2 pin REF+ of single-chip microcomputer IC5 and capacitor C 6, resistance R 3, and resistance R 3 is connected to the 1 pin REF-of single-chip microcomputer IC5; Resistance R 4 is connected to adjustable resistance P1, adjustable resistance P1 is connected to the negative terminal RD-of resistance R 5 and thermocouple sensor, resistance R 6 is connected to diode D5 and resistance R 7, resistance R 7 is connected to resistance R 8 and resistance R 10, resistance R 10 is connected to 2 pin and the resistance R 12 of amplifier IC2A, resistance R 12 is connected to 1 pin of amplifier IC2A and capacitor C 4, resistance R 13, and resistance R 25 is connected to the anode RD+ of resistance R 9 and thermocouple sensor, and resistance R 9 is connected to 3 pin of resistance R 11 and amplifier IC2A; Resistance R 14 and capacitor C 5 are connected to 6 pin of resistance R 15 and amplifier IC2B, resistance R 13 is connected to 5 pin of resistance R 16 and amplifier IC2B, resistance R 16 is connected to resistance R 7 and resistance R 18, resistance R 17 is connected to triode N1, triode N1 is connected to hummer B, and resistance R 18 is connected to triode N2, and triode N2 is connected to resistance R 19 and resistance R 20, resistance R 20 is connected to triode N3, and triode N3 is connected to diode D6 and relay J;
1 pin and 2 pin of single-chip microcomputer IC5 are connected to capacitor C 6,1 pin of single-chip microcomputer IC5 is connected to 5 pin of single-chip microcomputer IC5,3 pin of single-chip microcomputer IC5 are connected to resistance R 26, resistance R 26 is connected to triode N5, triode N5 is connected to charactron A1,16 pin of single-chip microcomputer IC5 are connected to resistance R 34, resistance R 34 is connected to triode N6, triode N6 is connected to charactron A3,15 pin of single-chip microcomputer IC5 are connected to resistance R 35, resistance R 35 is connected to triode N7, triode N7 is connected to charactron A2,6～12 pin of single-chip microcomputer IC5 are connected respectively to resistance R 27, resistance R 28, resistance R 29, resistance R 30, resistance R 31, resistance R 32, resistance R 33, resistance R 27, resistance R 28, resistance R 29, resistance R 30, resistance R 31, resistance R 32, resistance R 33 is connected respectively to charactron A1, charactron A2,3～9 pin of charactron A3, resistance R 27, resistance R 28, resistance R 29 is connected respectively to microswitch S1, microswitch S2, microswitch S3, microswitch S1, microswitch S2, microswitch S3 is connected to resistance R 38, resistance R 38 is connected to GND, 17 pin of single-chip microcomputer IC5 are connected to resistance R 36, capacitor C 7 and capacitor C 8, resistance R 36 is connected to the 1 pin VT of amplifier IC2A, 18 pin of single-chip microcomputer IC5 are connected to resistance R 37 and VCTL, resistance R 37 is connected to light emitting diode L1, and light emitting diode L1 is connected to GND;
Described single-chip microcomputer IC5 adopts the PIC16F819 single-chip microcomputer.
2, the control method of the described fast heating intelligent leadless welding table controller of claim 1, it is characterized in that the thermopair amplifying circuit amplifies the Thermocouple Temperature Signal in the solder horn, cold junction compensation circuit compensates the thermocouple signal error that environment temperature causes, the A/D convertor circuit that Thermocouple Temperature Signal after the amplification enters in the single-chip microcomputer is converted to digital signal, single-chip microcomputer calculates the gating pulse time scale according to the difference of design temperature and measurement temperature, by the size of silicon control zero-cross trigger circuit control flatiron heater heating power; Single-chip microcomputer send the LED charactron to carry out the numeral demonstration real time temperature signal of gathering simultaneously; Other one tunnel thermocouple signal after amplifying enters overtemperature and failure detector circuit, if output signal makes buzzer alarm circuit report to the police when overtemperature and fault occurring, output signal disconnects relay simultaneously, cuts off heating power supply.
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| CNB200710130978XA CN100547507C (en) | 2007-09-05 | 2007-09-05 | Fast heating intelligent leadless welding table controller and control method thereof |
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| CN101246202B (en) * | 2008-03-21 | 2010-06-09 | 北京联合大学生物化学工程学院 | AC electric power electronic switch triggering condition real-time detection circuit adopting double single-chips |
| CN105137339A (en) * | 2012-07-27 | 2015-12-09 | 胡小青 | Tester for testing electric leakage breaker |
| CN102759710B (en) * | 2012-07-27 | 2016-04-20 | 胡小青 | Modified checkout equipment |
| CN106124974B (en) * | 2012-07-27 | 2020-07-10 | 乐清市华尊电气有限公司 | Testing instrument |
| CN103439997B (en) * | 2013-07-09 | 2015-08-19 | 大唐湘潭发电有限责任公司 | The electric soldering iron control method of adjustable thermostatic and device |
| CN103949744B (en) * | 2014-01-15 | 2016-10-26 | 中冶宝钢技术服务有限公司 | A kind of quick-heating type temperature control electric soldering iron |
| CN112799448B (en) * | 2021-01-15 | 2022-01-25 | 北京京瀚禹电子工程技术有限公司 | Temperature control circuit based on artificial intelligence |
| CN115542809B (en) * | 2022-09-30 | 2024-02-20 | 佛山食神网络智能科技有限公司 | Universal controller |
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