CN201209024Y - Temperature control device for fast heating brand iron - Google Patents
Temperature control device for fast heating brand iron Download PDFInfo
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- CN201209024Y CN201209024Y CNU200820012248XU CN200820012248U CN201209024Y CN 201209024 Y CN201209024 Y CN 201209024Y CN U200820012248X U CNU200820012248X U CN U200820012248XU CN 200820012248 U CN200820012248 U CN 200820012248U CN 201209024 Y CN201209024 Y CN 201209024Y
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Abstract
The utility model relates to a temperature control device of a rapid-heating soldering iron, which is provided with a sampling circuit of power supply voltage, a zero-crossing detection circuit, a pulse control circuit and a drive circuit, wherein the sampling circuit of power supply voltage samples the voltage of AC (Alternating Current) commercial power and outputs an analog sampling signal of the power supply voltage, and the zero-crossing detection circuit samples zero-crossing points of the AC commercial power and outputs an analog sampling signal of the zero-crossing points of the AC commercial power; the pulse control circuit uses an SCM (Single-Chip Microcomputer) as a control center, and the input end of the pulse control circuit is connected with a two-point bonding control signal and a three-point bonding control signal; an AD (Analog-to-Digital) conversion pin is connected with the output end of the sampling circuit of power supply voltage, and an interrupt pin is connected with the output end of the zero-crossing detection circuit; and the drive circuit comprises a three-point drive heating circuit and a two-point drive heating circuit, the input ends of the three-point drive heating circuit and the two-point drive heating circuit are respectively connected with the control output ends of the SCM in the pulse control circuit, and output signals are connected with a primary coil of a heating transformer. The utility model can automatically adjust the temperature of the rapid-heating soldering iron, precisely controls time, has stable bonding quality, simple operation and high work efficiency, and reduces waste due to bonding strips.
Description
Technical field
The utility model relates to the rapid-heating iron in a kind of paper money binding machine, specifically a kind of temperature control device of rapid-heating iron.
Background technology
The banks of China system is to the arrangement keeping mode of 1000 bank note, mainly be to adopt automatic money packer to tie up bundled, paper money binding machine generally adopts and need not fore-warming rapid-heating iron at present, bonding quality influences the effect of tying up of bank note, and the temperature of rapid-heating iron is with the change of voltage of mains supply, past is by manually, remove to adjust the heating gear according to adhesive effect, doing first like this is trouble, because of mains voltage fluctuates, some regional voltage fluctuation is very big, so just needs the operator often to remove to adjust the heating gear according to adhesive effect.Second can cause the waste of strapping, the decline of work efficiency.The 3rd is that the instability of tying up bonding quality can cause bonding not firm.State after banking system is tied up for coin has had corresponding code requirement, causes the bonding control effect of present paper money binding machine bad, can not satisfy user's demand, and this is one of present paper money binding machine urgent problem.
The utility model content
At the weak point of the paper money binding machine that exists in the prior art to the bonding control weak effect of strapping, the technical problems to be solved in the utility model be to provide a kind of heating iron temperature with change of voltage the automatic compensation temperature control device of rapid-heating iron.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
The utlity model has the power line voltage sampling circuit, electric main is carried out voltage sampling, the analog sampling signal of output supply voltage; Zero cross detection circuit carries out zero crossing sampling, output supply voltage zero crossing digital signal to electric main; Pulse control circuit is the control core with the micro controller system, and its input end is connected to two spot gluing control signals and three spot gluing control signals, and the AD switched pins links to each other with the mouth of power line voltage sampling circuit, and interrupt pin links to each other with the mouth of zero cross detection circuit; Driving circuit comprises 3 driving heater circuits and 2 driving heater circuits, and its input end connects the control output end of the micro controller system in pulse control circuit respectively, and output signal links to each other with the elementary of heating transformer.
Described power line voltage sampling circuit has voltage sampling transformer, and it is elementary to link to each other with civil power by filter, obtains voltage sampling signal through the potential device dividing potential drop again after the secondary commutation filtering; Described zero cross detection circuit has alternating-current bidirectional photoelectrical coupler and voltage comparator, civil power carries out photoelectricity by the alternating-current bidirectional photoelectrical coupler and isolates output after the current-limiting resistance current limliting, be connected to the interrupt pin of micro controller system in the pulse control circuit again after voltage comparator and peripheral cell shaping; Described 3 driving heater circuits and 2 driving heating circuit structure are identical, have two-way optocoupler silicon control and triac respectively, two-way optocoupler silicon control will carry out exporting to after photoelectricity is isolated the gate pole of triac from the start pulse signal of micro controller system, and the negative electrode of this triac links to each other with the elementary of heating transformer with anode; The utility model also has the power line voltage display circuit, drives seven segment digital tubes, LED or LCD by shift register and forms, and the input end of shift register links to each other with the virtual serial port of micro controller system in the pulse control circuit.
The utlity model has following beneficial effect and advantage:
1. but the temperature of automatic compensation rapid-heating iron.The utility model as detection signal, adopts triac control power turn-on angle to realize the power line voltage adjustment with power line voltage sampling circuit and zero cross detection circuit, makes rapid-heating iron temperature automatic compensation, keeps stable;
2. simple to operate, high efficiency.The utility model adopts micro controller system as the control core in pulse control circuit, integrated AD modular converter, time control accurately, and need not the user after the setting of temperature gear is finished when dispatching from the factory regulates, bonding quality is stable, does not change with mains fluctuation, and can alleviate operator's labour intensity, reduce the strapping waste, increase work efficiency.
3. convenient debugging.The importance that display circuit exists in the utility model is to be convenient to commissioning staff's debugging, according to the voltage that shows, with multi-meter test civil power alternating-current voltage/AC voltage, adjust consistent by the potential device on the sampling circuit, just finish voltage calibration work, also be convenient to simultaneously the maintainer and understand complete machine power supply electric power thus supplied.
Description of drawings
Fig. 1 is the mains voltage sampling circuit;
Fig. 2 source of AC zero crossing sampling circuit;
Fig. 3 pulse control portion circuit diagram;
Fig. 4 drive part circuit diagram;
Fig. 5 power line voltage display circuit.
The specific embodiment
The utility model temperature control device of rapid-heating iron, carrying out line voltage by the micro controller system U1 in the pulse control circuit (present embodiment adopts STC12C2052AD) by the power line voltage sampling circuit detects, and regulate the width of trigging pulse according to the change of voltage of civil power, the conduction angle of triac remains unchanged the rapid-heating iron temperature in the control Driver Circuit.
Shown in Fig. 1～5, the utility model comprises the power line voltage sampling circuit, and electric main is carried out voltage sampling, the analog sampling signal of output supply voltage; Zero cross detection circuit carries out zero crossing sampling, output supply voltage zero crossing digital signal to electric main; Pulse control circuit, with micro controller system U1 is the control core, its input end is connected to two spot gluing control signals and three spot gluing control signals, the AD switched pins links to each other with the mouth of power line voltage sampling circuit, interrupt pin INT0 links to each other with the mouth of zero cross detection circuit, and the control input end of the micro controller system U1 in the pulse control circuit is connected to two spot gluing control signals and three spot gluing control signals; Driving circuit comprises 3 driving heater circuits and 2 driving heater circuits, and its input end connects the control output end of the micro controller system U1 in pulse control circuit respectively, and the mouth of driving circuit links to each other with the elementary of heating transformer.
Described power line voltage sampling circuit has voltage sampling transformer T1, and it is elementary to link to each other with civil power by filter, obtains voltage sampling signal through the potential device dividing potential drop again after the secondary commutation filtering; Zero cross detection circuit has alternating-current bidirectional photoelectrical coupler VX1 and voltage comparator UX1, civil power carries out photoelectricity by alternating-current bidirectional photoelectrical coupler VX1 and isolates output after current-limiting resistance RX6, RX7 current limliting, be connected to the interrupt pin INT0 of micro controller system U1 in the pulse control circuit again after voltage comparator UX1 and peripheral cell shaping; 3 driving heater circuits and 2 driving heating circuit structure are identical, comprise two-way optocoupler silicon control respectively, it will carry out exporting to after photoelectricity is isolated the gate pole of triac from the start pulse signal of micro controller system U1, and the negative electrode of this triac links to each other with the elementary of heating transformer with anode; Also have the power line voltage display circuit, driven other digital display circuits such as seven segment digital tubes, LED or LCD by shift register and form, the input end of shift register links to each other with virtual serial port T0, the T1 of micro controller system U1 in the pulse control circuit.
As shown in Figure 1, the principle of work of power line voltage sampling circuit is as follows, and electric main is given insulate step-down transformer T1 step-down after power filter filtering, after the dividing potential drop of rectifying and wave-filtering, resistance and potential device, the AD switched pins of giving micro controller system U1 is finished the sampling work of power line voltage.
As shown in Figure 2, be zero cross detection circuit, its principle of work is as follows: civil power is delivered to 1 pin and 2 pin of alternating-current bidirectional photoelectrical coupler VX1 through current-limiting resistance RX6, RX7 current limliting, after the inner photoelectricity of bi-directional light electric coupler is isolated, by 3 pin of bi-directional light electric coupler, micro controller system U1 is delivered in the output of 4 pin after voltage comparator UX1 and peripheral cell shaping INT0 interrupt pin, finish source of AC zero crossing sampling work.
Fig. 3 pulse control portion circuit diagram principle of work is as follows: the pulse control portion core is STC12C2052AD type micro controller system U1.Employing is control core design digital flip flop with the micro controller system, simplifies the composition of hardware circuit greatly, and can improve the control accuracy of binary pair, and wherein the resolution of trigger angle can reach 0.1 degree to 0.01 degree, even higher.Because the programmability of element makes the adjusting of micro controller system digital trigger quite flexible, be convenient to the parameter correction in addition.Select the STC12C2052AD micro controller system for use, because of integrated A/D convertor circuit in this micro controller system, and antijamming capability is strong.Control principle is as follows: the alternating current zero passage produces time-delay constantly and triggers benchmark.It delivers to the interrupt pin INT0 of STC12C2052AD micro controller system in the mode of falling edge, judge by program whether micro controller system 2 pin (P3.0) and 3 pin (P3.1) receive the warm-up control signal then, as receive control signal, the voltage sampling signal of sending here according to the AD switched pins P1.0 of micro controller system again, send out trigging pulse by sending into voltage control time-delay back, give driving circuit by control output end P1.6 and P1.7 output, finish control by pulses.
Fig. 4 is the driving circuit schematic diagram, and this driving circuit separated into two parts is controlled three spot gluing flatiron voltage transformers and two spot gluing heating transformers respectively.With three spot gluing driving circuits is example, its principle of work is as follows: have high-tension current and the requirement of satisfying triac Q1 gate pole paired pulses power for safety prevents direct component, the trigging pulse that is sent by micro controller system U1 must pass through the gate pole that isolation drive just can be added to triac.In order to simplify circuit layout, this circuit has used two-way optocoupler silicon control OP1 to finish silicon controlled driving work.Driven triac Q1 conducting after gate pole obtains drive pulse, when ac zero-crossing point, turn-off, then wait for the arrival of next pulse, adjust the angle of phase shift according to the control of micro controller system U1, realize the adjustment of voltage, it is elementary to export to heating transformer through the electric main of adjusting, and the low-voltage, high-current behind the heating transformer isolated buck is given rapid-heating iron, it is bonding to be used for hotly joining of strapping, and two circuit drives parts are identical.
Fig. 5 is the power line voltage display circuit, working process is as follows: micro controller system U1 will deliver to display circuit by virtual serial port T0, T1 through the voltage value that AD transforms after software is handled, display circuit is formed display driver circuit with shift register (74HC164), finishes display driver.The importance that display circuit exists is to be convenient to commissioning staff's debugging, according to the voltage that shows, with multi-meter test civil power alternating-current voltage/AC voltage, adjust consistent by the potential device on the sampling circuit, just finish voltage calibration work, also be convenient to the maintainer simultaneously and understand complete machine power supply electric power thus supplied.
Claims (5)
1. temperature control device of rapid-heating iron is characterized in that having:
The power line voltage sampling circuit carries out voltage sampling to electric main, the analog sampling signal of output supply voltage;
Zero cross detection circuit carries out zero crossing sampling, output supply voltage zero crossing digital signal to electric main;
Pulse control circuit, with micro controller system (U1) is the control core, its input end is connected to two spot gluing control signals and three spot gluing control signals, and the AD switched pins links to each other with the mouth of power line voltage sampling circuit, and interrupt pin (INT0) links to each other with the mouth of zero cross detection circuit;
Driving circuit comprises 3 driving heater circuits and 2 driving heater circuits, and its input end connects the control output end of the micro controller system (U1) in pulse control circuit respectively, and output signal links to each other with the elementary of heating transformer.
2. by the described temperature control device of rapid-heating iron of claim 1, it is characterized in that: described power line voltage sampling circuit has voltage sampling transformer (T1), it is elementary to link to each other with civil power by filter, obtains voltage sampling signal through the potential device dividing potential drop again after the secondary commutation filtering.
3. by the described temperature control device of rapid-heating iron of claim 1, it is characterized in that: described zero cross detection circuit has alternating-current bidirectional photoelectrical coupler (VX1) and voltage comparator (UX1), civil power carries out photoelectricity by alternating-current bidirectional photoelectrical coupler (VX1) and isolates output after current-limiting resistance (RX6, RX7) current limliting, be connected to the interrupt pin (INT0) of micro controller system in the pulse control circuit (U1) again after voltage comparator (UX1) and peripheral cell shaping.
4. by the described temperature control device of rapid-heating iron of claim 1, it is characterized in that: described 3 driving heater circuits and 2 driving heating circuit structure are identical, have two-way optocoupler silicon control and triac respectively, two-way optocoupler silicon control will carry out exporting to after photoelectricity is isolated the gate pole of triac from the start pulse signal of micro controller system (U1), and the negative electrode of this triac links to each other with the elementary of heating transformer with anode.
5. by the described temperature control device of rapid-heating iron of claim 1, it is characterized in that: also have the power line voltage display circuit, drive seven segment digital tubes, LED or LCD by shift register and form, the input end of shift register links to each other with the virtual serial port (T0, T1) of micro controller system (U1) in the pulse control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820012248XU CN201209024Y (en) | 2008-04-18 | 2008-04-18 | Temperature control device for fast heating brand iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820012248XU CN201209024Y (en) | 2008-04-18 | 2008-04-18 | Temperature control device for fast heating brand iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201209024Y true CN201209024Y (en) | 2009-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820012248XU Expired - Lifetime CN201209024Y (en) | 2008-04-18 | 2008-04-18 | Temperature control device for fast heating brand iron |
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| CN (1) | CN201209024Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644951A (en) * | 2011-02-22 | 2012-08-22 | 乐金电子(天津)电器有限公司 | Barbecue tube control device and method |
| CN104332124A (en) * | 2013-07-22 | 2015-02-04 | 珠海格力电器股份有限公司 | Drive circuit of nixie tube and control method of drive circuit |
| CN108958323A (en) * | 2018-07-27 | 2018-12-07 | 苏州嘉迈德电子科技有限公司 | A kind of constant-temperature circuit |
-
2008
- 2008-04-18 CN CNU200820012248XU patent/CN201209024Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644951A (en) * | 2011-02-22 | 2012-08-22 | 乐金电子(天津)电器有限公司 | Barbecue tube control device and method |
| CN102644951B (en) * | 2011-02-22 | 2016-06-29 | 乐金电子(天津)电器有限公司 | The control device and method of barbecue tube |
| CN104332124A (en) * | 2013-07-22 | 2015-02-04 | 珠海格力电器股份有限公司 | Drive circuit of nixie tube and control method of drive circuit |
| CN108958323A (en) * | 2018-07-27 | 2018-12-07 | 苏州嘉迈德电子科技有限公司 | A kind of constant-temperature circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090318 Effective date of abandoning: 20080418 |