CN104238407A - Control circuit of plasma spraying device and plasma spraying device - Google Patents
Control circuit of plasma spraying device and plasma spraying device Download PDFInfo
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- CN104238407A CN104238407A CN201410427782.7A CN201410427782A CN104238407A CN 104238407 A CN104238407 A CN 104238407A CN 201410427782 A CN201410427782 A CN 201410427782A CN 104238407 A CN104238407 A CN 104238407A
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Abstract
The invention relates to a control circuit of a plasma spraying device and the plasma spraying device. The control circuit comprises a driving circuit used for sending and amplifying oscillation signals and stabilizing voltages, a power circuit used for controlling output voltages, a protection circuit used for detecting current signals and gas pressure signals and a control display circuit used for processing the signals and displaying fault information. The control display circuit comprises an ATMEGA8L processing chip U1, a nixie tube display circuit and an alarm buzzer. The ATMEGA8L processing chip U1 is matched with the driving circuit and the power circuit, and voltage signals can be precisely controlled and output. The protection circuit can detect the current signals and the gas pressure signals of plasma gas flow sprayed out of the plasma spraying device in real time. When the current signals and the gas pressure signals are abnormal, the ATMEGA8L processing chip U1 starts the nixie tube display circuit and the alarm buzzer, an alarm can be given in time, and spraying operation can be safer.
Description
Technical field
The present invention relates to plasma spraying technology field, particularly relate to a kind of control circuit and plasma spray apparatus of plasma spray apparatus.
Background technology
Plasma spraying is another novel, the multiduty accurate spraying method occurred after flame spraying.The method uses electric energy that the mixed gass such as argon, hydrogen or helium are changed into high-temperature plasma and in anode, form plasma gas stream, metal or metal oxide, metal carbide are ejected into the surface of workpiece by recycling High Temperature And Velocity plasma gas stream, to form coating.Plasma spraying method is applicable to the spraying of materials with high melting point, and the speed of jet particle is high, and coating is fine and close, and cohesive strength is large, and owing to using inert gas as working gas, sprayed on material is not oxidizable.Therefore mostly industrial air plasma spraying equipment is all partial to select this spraying method.But, in plasma spraying method, the generation of plasma gas stream depends on the control circuit producing plasma gas stream, how to make the output voltage signal of control circuit more stable, and make its spraying operation safer, become the problem of slip-stick artist's general concern.
Summary of the invention
The object of the invention is to the control circuit and the plasma spray apparatus that propose a kind of plasma spray apparatus, energy precise hard_drawn tuhes output voltage signal, and in real time the monitoring current signal of control circuit and the air pressure signal of plasma gas stream, when current signal and air pressure signal occur abnormal and alarm.
For reaching this object, the present invention by the following technical solutions:
First aspect, a kind of control circuit of plasma spray apparatus is provided, comprise for sending oscillator signal and amplifying the driving circuit of voltage stabilizing, for controlling the power circuit of output voltage, for the protection circuit of air pressure signal of the plasma gas stream of sensed current signal and plasma spray apparatus ejection, the control display circuit of failure message is shown for the treatment of signal, the signal output part of described control display circuit connects the signal input part of driving circuit, the signal output part of described driving circuit connects the signal input part of power circuit, the signal output part of described power circuit connects the signal input part of protection circuit, the signal output part of described protection circuit connects the signal input part of described control display circuit, described control display circuit comprises the process chip U1 of ATMEGA8L type, digital pipe display circuit and alarm buzzer, described digital pipe display circuit is connected with process chip U1 respectively with alarm buzzer.
Wherein, described control display circuit also comprises SPI serial ports, diode D3, diode D2, inductance L 1, electric capacity C5, polar capacitor C4, resistance R13, resistance R14, resistance R15, electric capacity C3, resistance R12, serial ports UART1,
1st pin of described process chip U1, 2nd pin, 9th pin, 10th pin, 26th pin, 27th pin, 28th pin, 30th pin, 31st pin, 32nd pin connects digital pipe display circuit respectively, the 3rd pin ground connection of described process chip U1, the 4th pin connecting analog 5V voltage input end respectively of described process chip U1, 6th pin of process chip U1, the 5th pin ground connection of described process chip U1, 15th pin of described process chip U1 connects the MOSI end of SPI serial ports, 16th pin of described process chip U1 connects the MISO end of SPI serial ports respectively, the positive pole of diode D3, the negative pole of diode D3 connects one end of alarm buzzer, the other end ground connection of alarm buzzer, 17th pin of described process chip U1 connects the SCK end of SPI serial ports respectively, the negative pole of diode D2, the positive pole of diode D2 connects HT BACK end,
18th pin of described process chip U1 connects one end of inductance L 1, one end of electric capacity C5 respectively, the other end connecting analog 5V voltage input end of inductance L 1,20th pin of described process chip U1 connects the positive pole of polar capacitor C4, the equal ground connection of the other end of the negative pole of polar capacitor C4, the 21st pin of process chip U1, electric capacity C5
One end of the 23rd pin difference contact resistance R13 of described process chip U1, enabling signal input end, enabling signal output terminal connects VCC power input, one end of the 24th pin difference contact resistance R15 of described process chip U1, the signal input part of the air pressure signal detected, the signal output part ground connection of the air pressure signal detected, one end of the 25th pin difference contact resistance R14 of described process chip U1, the signal input part of the current signal detected, the signal output part ground connection of the current signal detected, the other end of resistance R13, the other end of resistance R14, the equal ground connection of the other end of resistance R15,
29th pin of described process chip U1 connects one end of electric capacity C3, one end of resistance R12 respectively, the other end connecting analog 5V voltage input end of resistance R12, the other end ground connection of electric capacity C3,30th pin of described process chip U1 also connects the 4th end of serial ports UART1,31st pin of described process chip U1 also connects the 3rd end of serial ports UART1, the 2nd end ground connection of serial ports UART1, the 1st end connecting analog 5V voltage input end of serial ports UART1.
Wherein, described digital pipe display circuit comprise by LED 1, LED 2, LED 3 and LED 4 parallel with one another form kinescope LED-DS1, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R9, resistance R10, resistance R11, the triode Q1 of 8550 types, the triode Q2 of 8550 types, the triode Q3 of 8550 types
One end of the 11st pin contact resistance R1 of described kinescope LED-DS1, the other end of resistance R1 connects the 30th pin of described process chip U1, one end of the 7th pin contact resistance R2 of described kinescope LED-DS1, the other end of resistance R2 connects the 31st pin of described process chip U1, one end of the 4th pin contact resistance R3 of described kinescope LED-DS1, the other end of resistance R3 connects the 32nd pin of described process chip U1, one end of the 2nd pin contact resistance R4 of described kinescope LED-DS1, the other end of resistance R4 connects the 1st pin of described process chip U1, one end of the 1st pin contact resistance R5 of described kinescope LED-DS1, the other end of resistance R5 connects the 2nd pin of described process chip U1, one end of the 10th pin contact resistance R6 of described kinescope LED-DS1, the other end of resistance R6 connects the 10th pin of described process chip U1, one end of the 5th pin contact resistance R7 of described kinescope LED-DS1, the other end of resistance R7 connects the 9th pin of described process chip U1,
The 12nd pin ground connection of described kinescope LED-DS1, the collector of the 9th pin connecting triode Q1 of described kinescope LED-DS1, the emitter connecting analog 5V voltage input end of triode Q1, one end of the base stage contact resistance R9 of triode Q1, the other end of resistance R9 connects the 26th pin of described process chip U1, the collector of the 8th pin connecting triode Q2 of described kinescope LED-DS1, the emitter connecting analog 5V voltage input end of triode Q2, one end of the base stage contact resistance R10 of triode Q2, the other end of resistance R10 connects the 27th pin of described process chip U1, the collector of the 6th pin connecting triode Q3 of described kinescope LED-DS1, the emitter connecting analog 5V voltage input end of triode Q3, one end of the base stage contact resistance R11 of triode Q3, the other end of resistance R11 connects the 28th pin of described process chip U1.
Wherein, described power circuit comprises electric capacity C64, transformer LF61, electric capacity C63, transformer LF62, fuse F61, current transformer T61, current transformer T62, mercury resistance R65, diode Q63, wire resistor R62, by four end to end bridge rectifier circuit DB61 formed of diode, by four end to end bridge rectifier circuit DB62 formed of diode, resistance R61, light emitting diode D61, resistance R64, resistance R67, polar capacitor C61, polar capacitor C66, resistance R69, electric capacity C65, electric capacity C62, electric capacity C67, the metal-oxide-semiconductor Q61 of 80N60 type, the metal-oxide-semiconductor Q62 of 80N60 type, the metal-oxide-semiconductor Q64 of 80N60 type, the metal-oxide-semiconductor Q65 of 80N60 type, resistance R66, resistance R610, iron inductance L61, iron inductance L62, resistance R63, resistance R68,
Power input CN1 connects one end of electric capacity C64 respectively, one end of first inductive coil of transformer LF61, power input CN4 connects the other end of electric capacity C64 respectively, one end of second inductive coil of transformer LF61, the other end of first inductive coil of transformer LF61 connects one end of electric capacity C63 respectively, one end of first inductive coil of transformer LF62, the other end of second inductive coil of transformer LF61 connects the other end of electric capacity C63 respectively, one end of second inductive coil of transformer LF62, the other end of first inductive coil of transformer LF62 connects one end of mercury resistance R65 respectively, the negative pole of diode Q63, one end of first inductive coil of current transformer T61, the other end of first inductive coil of current transformer T61 connects one end of wire resistor R62, the other end of wire resistor R62 connects the negative pole of diode Q63, the other end of resistance R65 connects the positive pole of diode Q63 respectively, 2nd end of bridge rectifier circuit DB61, 2nd end of bridge rectifier circuit DB62,
The other end of second inductive coil of transformer LF62 connects one end of fuse F61, the other end of fuse F61 connects one end of first inductive coil of current transformer T62, the other end of first inductive coil of current transformer T62 connects the 3rd end of bridge rectifier circuit DB62 respectively, 3rd end of bridge rectifier circuit DB61, one end of second inductive coil of current transformer T62 connects the signal input part of the current signal detected, the signal output part of the current signal detected connects the other end of second inductive coil of current transformer T62, 4th end of bridge rectifier circuit DB61 is connected with the 4th end of bridge rectifier circuit DB62, 1st end of bridge rectifier circuit DB61 is connected with the 1st end of bridge rectifier circuit DB62,
1st end of bridge rectifier circuit DB61 also one end of contact resistance R61, one end of resistance R64, the positive pole of polar capacitor C61, one end of electric capacity C62, the source electrode of metal-oxide-semiconductor Q61, the source electrode of metal-oxide-semiconductor Q62 respectively,
Also the negative pole of connecting luminous diode D61, one end of resistance R67, the negative pole of polar capacitor C66, one end of electric capacity C67, the drain electrode of metal-oxide-semiconductor Q64, the drain electrode of metal-oxide-semiconductor Q65, one end of resistance R610, pulse signal JA2 hold respectively for 1st end of bridge rectifier circuit DB62
The positive pole of the other end connecting luminous diode D61 of described resistance R61, the other end of the other end difference contact resistance R67 of resistance R64, the negative pole of polar capacitor C61, the positive pole of polar capacitor C66, one end of power output end CN2, one end of resistance R69, one end of the other end of power output end CN2 also contact resistance R69, the other end of resistance R69 connects one end of electric capacity C65, the other end of electric capacity C65 connects one end of power output end CN3, the other end of power output end CN3, the other end of power output end CN3 also connects the other end of electric capacity C62 respectively, the other end of electric capacity C67, the drain electrode of metal-oxide-semiconductor Q61, the source electrode of metal-oxide-semiconductor Q64, the drain electrode of metal-oxide-semiconductor Q62, the source electrode of metal-oxide-semiconductor Q65, one end of resistance R66, pulse signal JB2 holds,
The other end of resistance R66 connects the grid of metal-oxide-semiconductor Q61, the grid of metal-oxide-semiconductor Q62, one end of iron inductance L61 respectively, the other end of resistance R610 connects the grid of metal-oxide-semiconductor Q64, the grid of metal-oxide-semiconductor Q65, one end of iron inductance L62 respectively, one end of the other end contact resistance R63 of iron inductance L61, the other end of resistance R63 connects pulse signal JB1 end, one end of the other end contact resistance R68 of iron inductance L62, the other end of resistance R68 connects pulse signal JA1 end.
Wherein, described driving circuit comprises the pulse width modulating chip U2 of TL494 type, resistance R725, electric capacity C718, electric capacity C719, resistance R729, electric capacity C720, resistance R733, adjustable resistance RW72, resistance R734, resistance R732, electric capacity C721, electric capacity C717, electric capacity C716, iron inductance L71, resistance R720, resistance R721, the triode Q78 of 8550 types, the triode Q76 of 8050 types, resistance R716, the diode D77 of IN4148 type, the diode D710 of IN4148 type, the diode D78 of IN4148 type, the diode D711 of IN4148 type, the triode Q75 of 8050 types, the triode Q77 of 8550 types, resistance R717, resistance R722, resistance R723, resistance R714, resistance R711, the triode Q73 of 8550 types, the triode Q72 of 8050 types, the diode D72 of IN4148 type, the diode D74 of IN4148 type, the diode D73 of IN4148 type, the diode D75 of IN4148 type, the triode Q71 of 8050 types, the triode Q74 of 8550 types, resistance R710, resistance R713,
One end of the 1st pin contact resistance R725 of described pulse width modulating chip U2, the 2nd pin of described pulse width modulating chip U2 connects one end of electric capacity C718 respectively, 13rd pin of pulse width modulating chip U2, 14th pin of pulse width modulating chip U2, 16th pin of pulse width modulating chip U2, one end of electric capacity C719, one end of the 3rd pin difference contact resistance R732 of described pulse width modulating chip U2, one end of electric capacity C721, the other end ground connection of resistance R732, the other end ground connection of electric capacity C721, the 4th pin of described pulse width modulating chip U2 connects the other end of electric capacity C719 respectively, one end of resistance R729, the 5th pin of described pulse width modulating chip U2 connects one end of electric capacity C720, one end of the 6th pin contact resistance R733 of described pulse width modulating chip U2, and what the other end of resistance R733 connected adjustable resistance RW72 respectively fixes 3 ends, one end of resistance R734, the 7th pin of pulse width modulating chip U2, the other end of resistance R725, the other end of electric capacity C718, the other end of resistance R729, the other end of electric capacity C720, adjustable resistance RW72 fixes 1 end, adjustable 2 ends of adjustable resistance RW72, the equal ground connection of the other end of resistance R734, the 8th pin of described pulse width modulating chip U2 connects the 11st pin of pulse width modulating chip U2 respectively, 12nd pin of pulse width modulating chip U2, one end of electric capacity C717, one end of electric capacity C716, one end of iron inductance L71, the other end ground connection of electric capacity C717, the other end ground connection of electric capacity C716, the other end connecting analog 15V voltage input end of iron inductance L71, one end of the 9th pin contact resistance R723 of described pulse width modulating chip U2, one end of the 10th pin contact resistance R720 of described pulse width modulating chip U2
The base stage of the other end difference connecting triode Q76 of resistance R720, the base stage of triode Q78, one end of resistance R721, the base stage of triode Q72, the base stage of triode Q73, one end of resistance R714, one end of the collector contact resistance R716 of triode Q76, the other end of resistance R716 connects the negative pole of diode D77 respectively, simulation 15V voltage input end, the negative pole of diode D78, one end of resistance R717, the emitter of the emitter difference connecting triode Q78 of triode Q76, the positive pole of diode D77, the negative pole of diode D710, voltage signal LB1 holds, the other end of the collector contact resistance R717 of triode Q75, the emitter of the emitter difference connecting triode Q77 of triode Q75, voltage signal LB2 holds, the positive pole of diode D78, the negative pole of diode D711, the other end of described resistance R721, the collector of triode Q78, the positive pole of diode D710, the positive pole of diode D711, the collector of triode Q77, the equal ground connection in one end of resistance R722,
One end of the collector contact resistance R711 of triode Q72, the other end of resistance R711 connects the negative pole of diode D72 respectively, simulation 15V voltage input end, the negative pole of diode D73, one end of resistance R710, the emitter of the emitter difference connecting triode Q73 of triode Q72, the positive pole of diode D74, the negative pole of diode D72, voltage signal LA1 holds, the other end of the collector contact resistance R710 of triode Q71, the emitter of the emitter difference connecting triode Q74 of triode Q71, voltage signal LA2 holds, the positive pole of diode D73, the negative pole of diode D75, the other end of described resistance R714, the collector of triode Q73, the positive pole of diode D74, the positive pole of diode D75, the collector of triode Q74, the equal ground connection in one end of resistance R713,
The other end, the base stage of triode Q75, the base stage of triode Q77, the base stage of triode Q71, the base stage of triode Q74, the other end of resistance R713 of the other end difference contact resistance R722 of described resistance R723.
Wherein, described protection circuit comprise current transformer P81, electric capacity C82, rectifier bridge D81, the polar capacitor C81 of resistance R84, DB107 type, adjustable resistance RW81, resistance R83, resistance R88, polar capacitor C83, polar capacitor C85, resistance R89, resistance R86, resistance R85, resistance R81, electric capacity C86, comparer U81A, the resistance R87 of comparer U81B, LM393 type of electric capacity C84, LM393 type, resistance R82,
One end of current transformer P81 connects one end of electric capacity C82 respectively, one end of resistance R84, 1st pin of rectifier bridge D81, the other end of current transformer P81 connects the other end of electric capacity C82 respectively, the other end of resistance R84, 3rd pin of rectifier bridge D81, the 4th pin of rectifier bridge D81 connects the positive pole of polar capacitor C81 respectively, adjustable resistance RW81 fixes 1 end, the 6th pin of rectifier bridge D81, the negative pole of polar capacitor C81, adjustable resistance RW81 fixes 3 ends, the negative pole of polar capacitor C83, one end of resistance R85, the equal ground connection in one end of electric capacity C84, one end of the adjustable 2 ends difference contact resistance R83 of adjustable resistance RW81, one end of resistance R88, the other end of resistance R83 connects the positive pole of polar capacitor C83 respectively, input 3 end of comparer U81A, one end of the input 2 end difference contact resistance R81 of comparer U81A, the other end of resistance R85, the other end of electric capacity C84, the other end of resistance R81 connects 5V voltage input end, and input 8 end of comparer U81A connects 5V voltage input end, the output 4 end ground connection of comparer U81A, one end of the output 1 end difference contact resistance R82 of comparer U81A, the signal input part of the current signal of the detection of described control display circuit, the other end of resistance R82 connects 5V voltage input end, the signal output part ground connection of the current signal of the detection of described control display circuit,
The other end of resistance R88 connects the positive pole of polar capacitor C85 respectively, input 5 end of comparer U81B, one end of the input 6 end difference contact resistance R86 of comparer U81B, one end of resistance R89, one end of electric capacity C86, the negative pole of polar capacitor C85, the other end of resistance R89, the equal ground connection of the other end of electric capacity C86, the other end of resistance R86 connects 5V voltage input end, one end of the output 7 end difference contact resistance R87 of comparer U81B, the signal input part of the air pressure signal of the detection of described control display circuit, the other end of resistance R87 connects 5V voltage input end, the signal output part ground connection of the air pressure signal of the detection of described control display circuit.
Wherein, described protection circuit also comprises the triode Q910 connecing air pressure inductor port J94, resistance R928, diode D912, the resistance R927 of resistance R924, IN4148 type, resistance R930, resistance R931,8050 types,
The one end meeting air pressure inductor port J94 connects the 11st pin of described process chip U1, connect one end of the other end contact resistance R928 of air pressure inductor port J94, one end of the other end difference contact resistance R931 of resistance R928, the base stage of triode Q910, one end of the collector difference contact resistance R930 of triode Q910, the positive pole of diode D912, one end of resistance R924, one end of the negative pole contact resistance R927 of diode D912, the other end of resistance R927 connects the 4th pin of described pulse width modulating chip U2, the other end connecting analog 15V voltage input end of resistance R924, the other end of resistance R931, the emitter of triode Q910, the equal ground connection of the other end of resistance R930.
Second aspect, provides a kind of plasma spray apparatus, comprises the control circuit of high frequency transformer and above-mentioned plasma spray apparatus, and the voltage input end of described high frequency transformer is connected with the power output end of the control circuit of described plasma spray apparatus.
Wherein, described plasma spray apparatus is plasma gun.
Beneficial effect of the present invention is: a kind of control circuit of plasma spray apparatus and plasma spray apparatus, comprise for sending oscillator signal and amplifying the driving circuit of voltage stabilizing, for controlling the power circuit of output voltage, for the protection circuit of air pressure signal of the plasma gas stream of sensed current signal and plasma spray apparatus ejection, the control display circuit of failure message is shown for the treatment of signal, the signal output part of described control display circuit connects the signal input part of driving circuit, the signal output part of described driving circuit connects the signal input part of power circuit, the signal output part of described power circuit connects the signal input part of protection circuit, the signal output part of described protection circuit connects the signal input part of described control display circuit, described control display circuit comprises the process chip U1 of ATMEGA8L type, digital pipe display circuit and alarm buzzer, described digital pipe display circuit is connected with process chip U1 respectively with alarm buzzer.The process chip U1 of ATMEGA8L type coordinates driving circuit and power circuit, and control output voltage signal that can be accurate, for the conventional control circuit without control chip, makes the output voltage signal of this control circuit more stable.The air pressure signal of the plasma gas stream of the real-time sensed current signal of protection circuit energy and plasma spray apparatus ejection; when current signal and air pressure signal occur abnormal; the process chip U1 of ATMEGA8L type starts digital pipe display circuit and alarm buzzer; so that and alarm, make spraying operation safer.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing the embodiment of the present invention is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the content of the embodiment of the present invention and these accompanying drawings.
Fig. 1 is the block diagram of the control circuit of the plasma spray apparatus that the embodiment of the present invention provides.
Fig. 2 is the connecting circuit figure of the control display circuit that the embodiment of the present invention provides.
Fig. 3 is the connecting circuit figure of the digital pipe display circuit that the embodiment of the present invention provides.
Fig. 4 is the connecting circuit figure of the power circuit that the embodiment of the present invention provides.
Fig. 5 is the connecting circuit figure of the driving circuit that the embodiment of the present invention provides.
Fig. 6 is the connecting circuit figure of the Part I of the protection circuit that the embodiment of the present invention provides.
Fig. 7 is the connecting circuit figure of the Part II of the protection circuit that the embodiment of the present invention provides.
Embodiment
The technical matters solved for making the present invention, the technical scheme of employing and the technique effect that reaches are clearly, be described in further detail below in conjunction with the technical scheme of accompanying drawing to the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those skilled in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 1, it is the block diagram of the control circuit of the plasma spray apparatus that the embodiment of the present invention provides, and the control circuit of this plasma spray apparatus can be applicable to all kinds of plasma spraying equipment.
A kind of control circuit of plasma spray apparatus, comprise for sending oscillator signal and amplifying the driving circuit of voltage stabilizing, for controlling the power circuit of output voltage, for the protection circuit of air pressure signal of the plasma gas stream of sensed current signal and plasma spray apparatus ejection, the control display circuit of failure message is shown for the treatment of signal, the signal output part of described control display circuit connects the signal input part of driving circuit, the signal output part of described driving circuit connects the signal input part of power circuit, the signal output part of described power circuit connects the signal input part of protection circuit, the signal output part of described protection circuit connects the signal input part of described control display circuit, described control display circuit comprises the process chip U1 of ATMEGA8L type, digital pipe display circuit and alarm buzzer, described digital pipe display circuit is connected with process chip U1 respectively with alarm buzzer.
Described control display circuit coordinates driving circuit, control the waveform of the input voltage of power circuit, this voltage signal inputs to external plasma spray apparatus after the rectifying and wave-filtering of power circuit, so that the voltage signal of the external plasma spray apparatus of precise hard_drawn tuhes.The current signal of the plasma spray apparatus that protection circuit Real-Time Monitoring is external and air pressure signal; and this signal is inputed to control display circuit; so that when this signal is in abnomal condition, controlling display circuit can start alarm buzzer and digital pipe display circuit in time, sends alerting signal.
Please refer to Fig. 2, it is the connecting circuit figure of the control display circuit that the embodiment of the present invention provides.
Wherein, described control display circuit also comprises SPI serial ports, diode D3, diode D2, inductance L 1, electric capacity C5, polar capacitor C4, resistance R13, resistance R14, resistance R15, electric capacity C3, resistance R12, serial ports UART1,
1st pin of described process chip U1, 2nd pin, 9th pin, 10th pin, 26th pin, 27th pin, 28th pin, 30th pin, 31st pin, 32nd pin connects digital pipe display circuit respectively, the 3rd pin ground connection of described process chip U1, the 4th pin connecting analog 5V voltage input end respectively of described process chip U1, 6th pin of process chip U1, the 5th pin ground connection of described process chip U1, 15th pin of described process chip U1 connects the MOSI end of SPI serial ports, 16th pin of described process chip U1 connects the MISO end of SPI serial ports respectively, the positive pole of diode D3, the negative pole of diode D3 connects one end of alarm buzzer, the other end ground connection of alarm buzzer, 17th pin of described process chip U1 connects the SCK end of SPI serial ports respectively, the negative pole of diode D2, the positive pole of diode D2 connects HT BACK end,
18th pin of described process chip U1 connects one end of inductance L 1, one end of electric capacity C5 respectively, the other end connecting analog 5V voltage input end of inductance L 1,20th pin of described process chip U1 connects the positive pole of polar capacitor C4, the equal ground connection of the other end of the negative pole of polar capacitor C4, the 21st pin of process chip U1, electric capacity C5
One end of the 23rd pin difference contact resistance R13 of described process chip U1, enabling signal input end, enabling signal output terminal connects VCC power input, one end of the 24th pin difference contact resistance R15 of described process chip U1, the signal input part of the air pressure signal detected, the signal output part ground connection of the air pressure signal detected, one end of the 25th pin difference contact resistance R14 of described process chip U1, the signal input part of the current signal detected, the signal output part ground connection of the current signal detected, the other end of resistance R13, the other end of resistance R14, the equal ground connection of the other end of resistance R15,
29th pin of described process chip U1 connects one end of electric capacity C3, one end of resistance R12 respectively, the other end connecting analog 5V voltage input end of resistance R12, the other end ground connection of electric capacity C3,30th pin of described process chip U1 also connects the 4th end of serial ports UART1,31st pin of described process chip U1 also connects the 3rd end of serial ports UART1, the 2nd end ground connection of serial ports UART1, the 1st end connecting analog 5V voltage input end of serial ports UART1.
The process chip U1 of ATMEGA8L type is the high-grade single-chip microcomputer of a new A VR, its inside is integrated with the storer of larger capacity and enriches powerful hardware interface circuit, possess over-all properties and the feature of AVR high-grade single-chip microcomputer MEGE series, and have employed little pin package (for DIP28 and TQFP/MLF32), integrated level is high, adding the In-System Programmable characteristic of AVR single chip, making the design and development without the need to coordinating expensive emulator and programmable device also can carry out Single Chip MC in Embedded System.
The process chip U1 of ATMEGA8L type has followed the feature that AT90 family chip has, and on the basis of AT90 family chip (as AT9058515, AT9058535), add more interface function, relative AT90 family chip possess better economize electrically, stability, anti-interference and dirigibility.
The process chip U1 of ATMEGA8L type is 8 single-chip microcomputers based on AVR risc architecture adopting Low-Power CMOS explained hereafter.The core of AVR single chip is bound up at 32 work registers and abundant instruction set, all work registers are all directly connected with ALU (ALU), achieve the operation that (read-write) two independent register are accessed in the instruction performed within a clock period simultaneously.Such a construction increases code efficiency, make the execution time of most of instruction be only a clock period.Therefore, the process chip U1 of ATMEGA8L type can reach the performance close to 1MIPS/MHz, and travelling speed exceeds 10 times than common CISC single-chip microcomputer.
The control circuit of plasma spray apparatus provided by the invention, the process chip U1 of ATMEGA8L type is utilized to coordinate driving circuit and power circuit, control output voltage signal that can be accurate, for the conventional control circuit without control chip, make the output voltage signal of this control circuit more stable.The air pressure signal of the plasma gas stream of the real-time sensed current signal of protection circuit energy and plasma spray apparatus ejection; when current signal and air pressure signal occur abnormal; the process chip U1 of ATMEGA8L type starts digital pipe display circuit and alarm buzzer; so that and alarm, make spraying operation safer.
Please refer to Fig. 3, it is the connecting circuit figure of the digital pipe display circuit that the embodiment of the present invention provides.
Wherein, described digital pipe display circuit comprise by LED 1, LED 2, LED 3 and LED 4 parallel with one another form kinescope LED-DS1, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R9, resistance R10, resistance R11, the triode Q1 of 8550 types, the triode Q2 of 8550 types, the triode Q3 of 8550 types
One end of the 11st pin contact resistance R1 of described kinescope LED-DS1, the other end of resistance R1 connects the 30th pin of described process chip U1, one end of the 7th pin contact resistance R2 of described kinescope LED-DS1, the other end of resistance R2 connects the 31st pin of described process chip U1, one end of the 4th pin contact resistance R3 of described kinescope LED-DS1, the other end of resistance R3 connects the 32nd pin of described process chip U1, one end of the 2nd pin contact resistance R4 of described kinescope LED-DS1, the other end of resistance R4 connects the 1st pin of described process chip U1, one end of the 1st pin contact resistance R5 of described kinescope LED-DS1, the other end of resistance R5 connects the 2nd pin of described process chip U1, one end of the 10th pin contact resistance R6 of described kinescope LED-DS1, the other end of resistance R6 connects the 10th pin of described process chip U1, one end of the 5th pin contact resistance R7 of described kinescope LED-DS1, the other end of resistance R7 connects the 9th pin of described process chip U1,
The 12nd pin ground connection of described kinescope LED-DS1, the collector of the 9th pin connecting triode Q1 of described kinescope LED-DS1, the emitter connecting analog 5V voltage input end of triode Q1, one end of the base stage contact resistance R9 of triode Q1, the other end of resistance R9 connects the 26th pin of described process chip U1, the collector of the 8th pin connecting triode Q2 of described kinescope LED-DS1, the emitter connecting analog 5V voltage input end of triode Q2, one end of the base stage contact resistance R10 of triode Q2, the other end of resistance R10 connects the 27th pin of described process chip U1, the collector of the 6th pin connecting triode Q3 of described kinescope LED-DS1, the emitter connecting analog 5V voltage input end of triode Q3, one end of the base stage contact resistance R11 of triode Q3, the other end of resistance R11 connects the 28th pin of described process chip U1.
The air pressure signal of the plasma gas stream of the real-time sensed current signal of protection circuit and plasma spray apparatus ejection; when current signal and air pressure signal are in normal range; digital pipe display circuit does not show error information; when current signal and air pressure signal are in non-normal range; the process chip U1 of ATMEGA8L type starts digital pipe display circuit, to show error information.As kinescope LED-DS1 shows 0101, then represent that current overload phenomenon, kinescope LED-DS1 display 0103 appears in the control circuit of plasma spray apparatus, then represent that pressure abnormity phenomenon appears in the control circuit of plasma spray apparatus.The error information of display and the corresponding relation of fault type, be pre-set in the process chip U1 program of the ATMEGA8L type controlling display circuit.
Please refer to Fig. 4, it is the connecting circuit figure of the power circuit that the embodiment of the present invention provides.
Wherein, described power circuit comprises electric capacity C64, transformer LF61, electric capacity C63, transformer LF62, fuse F61, current transformer T61, current transformer T62, mercury resistance R65, diode Q63, wire resistor R62, by four end to end bridge rectifier circuit DB61 formed of diode, by four end to end bridge rectifier circuit DB62 formed of diode, resistance R61, light emitting diode D61, resistance R64, resistance R67, polar capacitor C61, polar capacitor C66, resistance R69, electric capacity C65, electric capacity C62, electric capacity C67, the metal-oxide-semiconductor Q61 of 80N60 type, the metal-oxide-semiconductor Q62 of 80N60 type, the metal-oxide-semiconductor Q64 of 80N60 type, the metal-oxide-semiconductor Q65 of 80N60 type, resistance R66, resistance R610, iron inductance L61, iron inductance L62, resistance R63, resistance R68,
Power input CN1 connects one end of electric capacity C64 respectively, one end of first inductive coil of transformer LF61, power input CN4 connects the other end of electric capacity C64 respectively, one end of second inductive coil of transformer LF61, the other end of first inductive coil of transformer LF61 connects one end of electric capacity C63 respectively, one end of first inductive coil of transformer LF62, the other end of second inductive coil of transformer LF61 connects the other end of electric capacity C63 respectively, one end of second inductive coil of transformer LF62, the other end of first inductive coil of transformer LF62 connects one end of mercury resistance R65 respectively, the negative pole of diode Q63, one end of first inductive coil of current transformer T61, the other end of first inductive coil of current transformer T61 connects one end of wire resistor R62, the other end of wire resistor R62 connects the negative pole of diode Q63, the other end of resistance R65 connects the positive pole of diode Q63 respectively, 2nd end of bridge rectifier circuit DB61, 2nd end of bridge rectifier circuit DB62,
The other end of second inductive coil of transformer LF62 connects one end of fuse F61, the other end of fuse F61 connects one end of first inductive coil of current transformer T62, the other end of first inductive coil of current transformer T62 connects the 3rd end of bridge rectifier circuit DB62 respectively, 3rd end of bridge rectifier circuit DB61, one end of second inductive coil of current transformer T62 connects the signal input part of the current signal detected, the signal output part of the current signal detected connects the other end of second inductive coil of current transformer T62, 4th end of bridge rectifier circuit DB61 is connected with the 4th end of bridge rectifier circuit DB62, 1st end of bridge rectifier circuit DB61 is connected with the 1st end of bridge rectifier circuit DB62,
1st end of bridge rectifier circuit DB61 also one end of contact resistance R61, one end of resistance R64, the positive pole of polar capacitor C61, one end of electric capacity C62, the source electrode of metal-oxide-semiconductor Q61, the source electrode of metal-oxide-semiconductor Q62 respectively,
Also the negative pole of connecting luminous diode D61, one end of resistance R67, the negative pole of polar capacitor C66, one end of electric capacity C67, the drain electrode of metal-oxide-semiconductor Q64, the drain electrode of metal-oxide-semiconductor Q65, one end of resistance R610, pulse signal JA2 hold respectively for 1st end of bridge rectifier circuit DB62
The positive pole of the other end connecting luminous diode D61 of described resistance R61, the other end of the other end difference contact resistance R67 of resistance R64, the negative pole of polar capacitor C61, the positive pole of polar capacitor C66, one end of power output end CN2, one end of resistance R69, one end of the other end of power output end CN2 also contact resistance R69, the other end of resistance R69 connects one end of electric capacity C65, the other end of electric capacity C65 connects one end of power output end CN3, the other end of power output end CN3, the other end of power output end CN3 also connects the other end of electric capacity C62 respectively, the other end of electric capacity C67, the drain electrode of metal-oxide-semiconductor Q61, the source electrode of metal-oxide-semiconductor Q64, the drain electrode of metal-oxide-semiconductor Q62, the source electrode of metal-oxide-semiconductor Q65, one end of resistance R66, pulse signal JB2 holds,
The other end of resistance R66 connects the grid of metal-oxide-semiconductor Q61, the grid of metal-oxide-semiconductor Q62, one end of iron inductance L61 respectively, the other end of resistance R610 connects the grid of metal-oxide-semiconductor Q64, the grid of metal-oxide-semiconductor Q65, one end of iron inductance L62 respectively, one end of the other end contact resistance R63 of iron inductance L61, the other end of resistance R63 connects pulse signal JB1 end, one end of the other end contact resistance R68 of iron inductance L62, the other end of resistance R68 connects pulse signal JA1 end.
The power input CN1 of power circuit and power input CN4 inputs 220V power supply, through rectifying and wave-filtering, under the control of the pulse signal of driving circuit, the voltage signal of 150V-20KHz is exported, so that the voltage of microstructure of plasma sprayed device controls by power output end CN2 and power output end CN3.
Please refer to Fig. 5, it is the connecting circuit figure of the driving circuit that the embodiment of the present invention provides.
Wherein, described driving circuit comprises the pulse width modulating chip U2 of TL494 type, resistance R725, electric capacity C718, electric capacity C719, resistance R729, electric capacity C720, resistance R733, adjustable resistance RW72, resistance R734, resistance R732, electric capacity C721, electric capacity C717, electric capacity C716, iron inductance L71, resistance R720, resistance R721, the triode Q78 of 8550 types, the triode Q76 of 8050 types, resistance R716, the diode D77 of IN4148 type, the diode D710 of IN4148 type, the diode D78 of IN4148 type, the diode D711 of IN4148 type, the triode Q75 of 8050 types, the triode Q77 of 8550 types, resistance R717, resistance R722, resistance R723, resistance R714, resistance R711, the triode Q73 of 8550 types, the triode Q72 of 8050 types, the diode D72 of IN4148 type, the diode D74 of IN4148 type, the diode D73 of IN4148 type, the diode D75 of IN4148 type, the triode Q71 of 8050 types, the triode Q74 of 8550 types, resistance R710, resistance R713,
One end of the 1st pin contact resistance R725 of described pulse width modulating chip U2, the 2nd pin of described pulse width modulating chip U2 connects one end of electric capacity C718 respectively, 13rd pin of pulse width modulating chip U2, 14th pin of pulse width modulating chip U2, 16th pin of pulse width modulating chip U2, one end of electric capacity C719, one end of the 3rd pin difference contact resistance R732 of described pulse width modulating chip U2, one end of electric capacity C721, the other end ground connection of resistance R732, the other end ground connection of electric capacity C721, the 4th pin of described pulse width modulating chip U2 connects the other end of electric capacity C719 respectively, one end of resistance R729, the 5th pin of described pulse width modulating chip U2 connects one end of electric capacity C720, one end of the 6th pin contact resistance R733 of described pulse width modulating chip U2, and what the other end of resistance R733 connected adjustable resistance RW72 respectively fixes 3 ends, one end of resistance R734, the 7th pin of pulse width modulating chip U2, the other end of resistance R725, the other end of electric capacity C718, the other end of resistance R729, the other end of electric capacity C720, adjustable resistance RW72 fixes 1 end, adjustable 2 ends of adjustable resistance RW72, the equal ground connection of the other end of resistance R734, the 8th pin of described pulse width modulating chip U2 connects the 11st pin of pulse width modulating chip U2 respectively, 12nd pin of pulse width modulating chip U2, one end of electric capacity C717, one end of electric capacity C716, one end of iron inductance L71, the other end ground connection of electric capacity C717, the other end ground connection of electric capacity C716, the other end connecting analog 15V voltage input end of iron inductance L71, one end of the 9th pin contact resistance R723 of described pulse width modulating chip U2, one end of the 10th pin contact resistance R720 of described pulse width modulating chip U2
The base stage of the other end difference connecting triode Q76 of resistance R720, the base stage of triode Q78, one end of resistance R721, the base stage of triode Q72, the base stage of triode Q73, one end of resistance R714, one end of the collector contact resistance R716 of triode Q76, the other end of resistance R716 connects the negative pole of diode D77 respectively, simulation 15V voltage input end, the negative pole of diode D78, one end of resistance R717, the emitter of the emitter difference connecting triode Q78 of triode Q76, the positive pole of diode D77, the negative pole of diode D710, voltage signal LB1 holds, the other end of the collector contact resistance R717 of triode Q75, the emitter of the emitter difference connecting triode Q77 of triode Q75, voltage signal LB2 holds, the positive pole of diode D78, the negative pole of diode D711, the other end of described resistance R721, the collector of triode Q78, the positive pole of diode D710, the positive pole of diode D711, the collector of triode Q77, the equal ground connection in one end of resistance R722,
One end of the collector contact resistance R711 of triode Q72, the other end of resistance R711 connects the negative pole of diode D72 respectively, simulation 15V voltage input end, the negative pole of diode D73, one end of resistance R710, the emitter of the emitter difference connecting triode Q73 of triode Q72, the positive pole of diode D74, the negative pole of diode D72, voltage signal LA1 holds, the other end of the collector contact resistance R710 of triode Q71, the emitter of the emitter difference connecting triode Q74 of triode Q71, voltage signal LA2 holds, the positive pole of diode D73, the negative pole of diode D75, the other end of described resistance R714, the collector of triode Q73, the positive pole of diode D74, the positive pole of diode D75, the collector of triode Q74, the equal ground connection in one end of resistance R713,
The other end, the base stage of triode Q75, the base stage of triode Q77, the base stage of triode Q71, the base stage of triode Q74, the other end of resistance R713 of the other end difference contact resistance R722 of described resistance R723.
The pulse width modulating chip U2 of TL494 type is a kind of fixed frequency pulse width modulated chip, and it contains the repertoire needed for Switching Power Supply control, is widely used in single-end ortho-exciting double hose, semibridge system, full-bridge type Switching Power Supply.This chip has SO-16 and PDIP-16 two kinds of packing forms, to adapt to the requirement of different occasion.
The pulse width modulating chip U2 of TL494 type is integrated with whole pulse-width modulation circuits, sheet built-in linear saw-toothed oscillator, error amplifier, 5V reference data voltage source and power transistor.Built-in power transistor can provide the driving force of 500mA.The reference voltage source of the built-in 5.0V of pulse width modulating chip U2 of TL494 type, when using external biasing circuit, load current up to 10mA can be provided, under typical 0-70 DEG C of temperature range 50mV temperature drift conditions, this reference voltage source can provide ± degree of accuracy of 5%.External oscillating element only two (resistance and an electric capacity).The oscillation frequency of the pulse width modulating chip U2 of TL494 type regulates by a resistance of outside and an electric capacity.The width exporting pulse is compared by the positive polarity sawtooth voltage on electric capacity CT and two other control signal to realize.
The control circuit of traditional plasma spray apparatus uses two-way IGBT to be packaged together usually, as then repaired when there is unidirectional puncturing, there is the problem of waste resource.The control circuit of plasma spray apparatus provided by the invention, is divided into two unidirectional IBGT to connect two-way IGBT, overcomes the problems referred to above.
Please refer to Fig. 6, it is the connecting circuit figure of the Part I of the protection circuit that the embodiment of the present invention provides.
Wherein, described protection circuit comprise current transformer P81, electric capacity C82, rectifier bridge D81, the polar capacitor C81 of resistance R84, DB107 type, adjustable resistance RW81, resistance R83, resistance R88, polar capacitor C83, polar capacitor C85, resistance R89, resistance R86, resistance R85, resistance R81, electric capacity C86, comparer U81A, the resistance R87 of comparer U81B, LM393 type of electric capacity C84, LM393 type, resistance R82,
One end of current transformer P81 connects one end of electric capacity C82 respectively, one end of resistance R84, 1st pin of rectifier bridge D81, the other end of current transformer P81 connects the other end of electric capacity C82 respectively, the other end of resistance R84, 3rd pin of rectifier bridge D81, the 4th pin of rectifier bridge D81 connects the positive pole of polar capacitor C81 respectively, adjustable resistance RW81 fixes 1 end, the 6th pin of rectifier bridge D81, the negative pole of polar capacitor C81, adjustable resistance RW81 fixes 3 ends, the negative pole of polar capacitor C83, one end of resistance R85, the equal ground connection in one end of electric capacity C84, one end of the adjustable 2 ends difference contact resistance R83 of adjustable resistance RW81, one end of resistance R88, the other end of resistance R83 connects the positive pole of polar capacitor C83 respectively, input 3 end of comparer U81A, one end of the input 2 end difference contact resistance R81 of comparer U81A, the other end of resistance R85, the other end of electric capacity C84, the other end of resistance R81 connects 5V voltage input end, and input 8 end of comparer U81A connects 5V voltage input end, the output 4 end ground connection of comparer U81A, one end of the output 1 end difference contact resistance R82 of comparer U81A, the signal input part of the current signal of the detection of described control display circuit, the other end of resistance R82 connects 5V voltage input end, the signal output part ground connection of the current signal of the detection of described control display circuit,
The other end of resistance R88 connects the positive pole of polar capacitor C85 respectively, input 5 end of comparer U81B, one end of the input 6 end difference contact resistance R86 of comparer U81B, one end of resistance R89, one end of electric capacity C86, the negative pole of polar capacitor C85, the other end of resistance R89, the equal ground connection of the other end of electric capacity C86, the other end of resistance R86 connects 5V voltage input end, one end of the output 7 end difference contact resistance R87 of comparer U81B, the signal input part of the air pressure signal of the detection of described control display circuit, the other end of resistance R87 connects 5V voltage input end, the signal output part ground connection of the air pressure signal of the detection of described control display circuit.
Current transformer manufactures according to electromagnetic induction principle, and its primary winding number of turn is little, usually adopts single-turn circular coil, i.e. a copper rod or a copper bar.Secondary coil mainly connects the coil of measurement instrument or relay.The secondary side of current transformer can not open running, and when secondary side is opened a way, the electric current of primary side is mainly used in excitatory, can induce very high voltage like this at secondary side, thus jeopardizes the safety of secondary device and the person, and current transformer also can be caused to burn.Very large primary current can be changed into 5 amperes of standard by current transformer, is the coil with electric current of measurement mechanism and relay protection, isolates primary equipment and secondary device.
Please refer to Fig. 7, it is the connecting circuit figure of the Part II of the protection circuit that the embodiment of the present invention provides.
Wherein, described protection circuit also comprises the triode Q910 connecing air pressure inductor port J94, resistance R928, diode D912, the resistance R927 of resistance R924, IN4148 type, resistance R930, resistance R931,8050 types,
The one end meeting air pressure inductor port J94 connects the 11st pin of described process chip U1, connect one end of the other end contact resistance R928 of air pressure inductor port J94, one end of the other end difference contact resistance R931 of resistance R928, the base stage of triode Q910, one end of the collector difference contact resistance R930 of triode Q910, the positive pole of diode D912, one end of resistance R924, one end of the negative pole contact resistance R927 of diode D912, the other end of resistance R927 connects the 4th pin of described pulse width modulating chip U2, the other end connecting analog 15V voltage input end of resistance R924, the other end of resistance R931, the emitter of triode Q910, the equal ground connection of the other end of resistance R930.
The control circuit of traditional plasma spray apparatus can produce high-frequency high-voltage when producing plasmon signal, has certain threat to human-body safety.The control circuit of plasma spray apparatus provided by the invention, load detecting improves to some extent, and adds protection circuit, when insulation course occur damage when, can and alarm, to avoid working the mischief to the person.
The control circuit of plasma spray apparatus provided by the invention, adds malfunction Presentation Function, contributes to client in the process of carrying out plasma spraying, Timeliness coverage fault, finds out failure cause and solves as early as possible.
The control circuit of plasma spray apparatus provided by the invention, adds load condition Presentation Function, contributes to client in the process of carrying out plasma spraying, reads the various data of load in real time, ensures normally carrying out of Plasma Spraying Process Using.This function can control display circuit and LED display integrated with realize, described LED display also can be kinescope LED-DS1.Control display circuit and LED display are integrated into prior art, do not repeat herein.
The control circuit of plasma spray apparatus provided by the invention, controls display circuit and can adopt program to control, conveniently detect the ruuning situation of whole control circuit, process all data by program, thus output to each n-back test block.Can soft start function be added in a program, avoid high-frequency high-voltage and when starting and switching, control circuit is impacted, make its job insecurity.
Each components and parts specifications parameter of the control circuit of plasma spray apparatus provided by the invention, as resistance, electric capacity, inductance etc. all can identify see accompanying drawing, does not repeat herein.Certainly; those skilled in the art according to common practise, under the technical background of the technical program, can also select other forms of driving circuit, power circuit, protection circuit and control display circuit; to realize its each self-corresponding function, also no longer citing repeats herein.
The present invention also provides a kind of plasma spray apparatus, comprises the control circuit of high frequency transformer and above-mentioned plasma spray apparatus, and the voltage input end of described high frequency transformer is connected with the power output end of the control circuit of described plasma spray apparatus.
Wherein, described plasma spray apparatus is plasma gun.
A kind of control circuit of plasma spray apparatus and plasma spray apparatus, energy precise hard_drawn tuhes output voltage signal, and in real time the monitoring current signal of control circuit and the air pressure signal of plasma gas stream, when current signal and air pressure signal occur abnormal and alarm.
Above content is only preferred embodiment of the present invention, and for those of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, this description should not be construed as limitation of the present invention.
Claims (9)
1. the control circuit of a plasma spray apparatus, it is characterized in that: comprise for sending oscillator signal and amplifying the driving circuit of voltage stabilizing, for controlling the power circuit of output voltage, for the protection circuit of air pressure signal of the plasma gas stream of sensed current signal and plasma spray apparatus ejection, the control display circuit of failure message is shown for the treatment of signal, the signal output part of described control display circuit connects the signal input part of driving circuit, the signal output part of described driving circuit connects the signal input part of power circuit, the signal output part of described power circuit connects the signal input part of protection circuit, the signal output part of described protection circuit connects the signal input part of described control display circuit, described control display circuit comprises the process chip U1 of ATMEGA8L type, digital pipe display circuit and alarm buzzer, described digital pipe display circuit is connected with process chip U1 respectively with alarm buzzer.
2. the control circuit of plasma spray apparatus according to claim 1, it is characterized in that, described control display circuit also comprises SPI serial ports, diode D3, diode D2, inductance L 1, electric capacity C5, polar capacitor C4, resistance R13, resistance R14, resistance R15, electric capacity C3, resistance R12, serial ports UART1
1st pin of described process chip U1, 2nd pin, 9th pin, 10th pin, 26th pin, 27th pin, 28th pin, 30th pin, 31st pin, 32nd pin connects digital pipe display circuit respectively, the 3rd pin ground connection of described process chip U1, the 4th pin connecting analog 5V voltage input end respectively of described process chip U1, 6th pin of process chip U1, the 5th pin ground connection of described process chip U1, 15th pin of described process chip U1 connects the MOSI end of SPI serial ports, 16th pin of described process chip U1 connects the MISO end of SPI serial ports respectively, the positive pole of diode D3, the negative pole of diode D3 connects one end of alarm buzzer, the other end ground connection of alarm buzzer, 17th pin of described process chip U1 connects the SCK end of SPI serial ports respectively, the negative pole of diode D2, the positive pole of diode D2 connects HT BACK end,
18th pin of described process chip U1 connects one end of inductance L 1, one end of electric capacity C5 respectively, the other end connecting analog 5V voltage input end of inductance L 1,20th pin of described process chip U1 connects the positive pole of polar capacitor C4, the equal ground connection of the other end of the negative pole of polar capacitor C4, the 21st pin of process chip U1, electric capacity C5
One end of the 23rd pin difference contact resistance R13 of described process chip U1, enabling signal input end, enabling signal output terminal connects VCC power input, one end of the 24th pin difference contact resistance R15 of described process chip U1, the signal input part of the air pressure signal detected, the signal output part ground connection of the air pressure signal detected, one end of the 25th pin difference contact resistance R14 of described process chip U1, the signal input part of the current signal detected, the signal output part ground connection of the current signal detected, the other end of resistance R13, the other end of resistance R14, the equal ground connection of the other end of resistance R15,
29th pin of described process chip U1 connects one end of electric capacity C3, one end of resistance R12 respectively, the other end connecting analog 5V voltage input end of resistance R12, the other end ground connection of electric capacity C3,30th pin of described process chip U1 also connects the 4th end of serial ports UART1,31st pin of described process chip U1 also connects the 3rd end of serial ports UART1, the 2nd end ground connection of serial ports UART1, the 1st end connecting analog 5V voltage input end of serial ports UART1.
3. the control circuit of plasma spray apparatus according to claim 2, it is characterized in that, described digital pipe display circuit comprise by LED 1, LED 2, LED 3 and LED 4 parallel with one another form kinescope LED-DS1, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R9, resistance R10, resistance R11, the triode Q1 of 8550 types, the triode Q2 of 8550 types, the triode Q3 of 8550 types
One end of the 11st pin contact resistance R1 of described kinescope LED-DS1, the other end of resistance R1 connects the 30th pin of described process chip U1, one end of the 7th pin contact resistance R2 of described kinescope LED-DS1, the other end of resistance R2 connects the 31st pin of described process chip U1, one end of the 4th pin contact resistance R3 of described kinescope LED-DS1, the other end of resistance R3 connects the 32nd pin of described process chip U1, one end of the 2nd pin contact resistance R4 of described kinescope LED-DS1, the other end of resistance R4 connects the 1st pin of described process chip U1, one end of the 1st pin contact resistance R5 of described kinescope LED-DS1, the other end of resistance R5 connects the 2nd pin of described process chip U1, one end of the 10th pin contact resistance R6 of described kinescope LED-DS1, the other end of resistance R6 connects the 10th pin of described process chip U1, one end of the 5th pin contact resistance R7 of described kinescope LED-DS1, the other end of resistance R7 connects the 9th pin of described process chip U1,
The 12nd pin ground connection of described kinescope LED-DS1, the collector of the 9th pin connecting triode Q1 of described kinescope LED-DS1, the emitter connecting analog 5V voltage input end of triode Q1, one end of the base stage contact resistance R9 of triode Q1, the other end of resistance R9 connects the 26th pin of described process chip U1, the collector of the 8th pin connecting triode Q2 of described kinescope LED-DS1, the emitter connecting analog 5V voltage input end of triode Q2, one end of the base stage contact resistance R10 of triode Q2, the other end of resistance R10 connects the 27th pin of described process chip U1, the collector of the 6th pin connecting triode Q3 of described kinescope LED-DS1, the emitter connecting analog 5V voltage input end of triode Q3, one end of the base stage contact resistance R11 of triode Q3, the other end of resistance R11 connects the 28th pin of described process chip U1.
4. the control circuit of plasma spray apparatus according to claim 1, it is characterized in that, described power circuit comprises electric capacity C64, transformer LF61, electric capacity C63, transformer LF62, fuse F61, current transformer T61, current transformer T62, mercury resistance R65, diode Q63, wire resistor R62, by four end to end bridge rectifier circuit DB61 formed of diode, by four end to end bridge rectifier circuit DB62 formed of diode, resistance R61, light emitting diode D61, resistance R64, resistance R67, polar capacitor C61, polar capacitor C66, resistance R69, electric capacity C65, electric capacity C62, electric capacity C67, the metal-oxide-semiconductor Q61 of 80N60 type, the metal-oxide-semiconductor Q62 of 80N60 type, the metal-oxide-semiconductor Q64 of 80N60 type, the metal-oxide-semiconductor Q65 of 80N60 type, resistance R66, resistance R610, iron inductance L61, iron inductance L62, resistance R63, resistance R68,
Power input CN1 connects one end of electric capacity C64 respectively, one end of first inductive coil of transformer LF61, power input CN4 connects the other end of electric capacity C64 respectively, one end of second inductive coil of transformer LF61, the other end of first inductive coil of transformer LF61 connects one end of electric capacity C63 respectively, one end of first inductive coil of transformer LF62, the other end of second inductive coil of transformer LF61 connects the other end of electric capacity C63 respectively, one end of second inductive coil of transformer LF62, the other end of first inductive coil of transformer LF62 connects one end of mercury resistance R65 respectively, the negative pole of diode Q63, one end of first inductive coil of current transformer T61, the other end of first inductive coil of current transformer T61 connects one end of wire resistor R62, the other end of wire resistor R62 connects the negative pole of diode Q63, the other end of resistance R65 connects the positive pole of diode Q63 respectively, 2nd end of bridge rectifier circuit DB61, 2nd end of bridge rectifier circuit DB62,
The other end of second inductive coil of transformer LF62 connects one end of fuse F61, the other end of fuse F61 connects one end of first inductive coil of current transformer T62, the other end of first inductive coil of current transformer T62 connects the 3rd end of bridge rectifier circuit DB62 respectively, 3rd end of bridge rectifier circuit DB61, one end of second inductive coil of current transformer T62 connects the signal input part of the current signal detected, the signal output part of the current signal detected connects the other end of second inductive coil of current transformer T62, 4th end of bridge rectifier circuit DB61 is connected with the 4th end of bridge rectifier circuit DB62, 1st end of bridge rectifier circuit DB61 is connected with the 1st end of bridge rectifier circuit DB62,
1st end of bridge rectifier circuit DB61 also one end of contact resistance R61, one end of resistance R64, the positive pole of polar capacitor C61, one end of electric capacity C62, the source electrode of metal-oxide-semiconductor Q61, the source electrode of metal-oxide-semiconductor Q62 respectively,
Also the negative pole of connecting luminous diode D61, one end of resistance R67, the negative pole of polar capacitor C66, one end of electric capacity C67, the drain electrode of metal-oxide-semiconductor Q64, the drain electrode of metal-oxide-semiconductor Q65, one end of resistance R610, pulse signal JA2 hold respectively for 1st end of bridge rectifier circuit DB62
The positive pole of the other end connecting luminous diode D61 of described resistance R61, the other end of the other end difference contact resistance R67 of resistance R64, the negative pole of polar capacitor C61, the positive pole of polar capacitor C66, one end of power output end CN2, one end of resistance R69, one end of the other end of power output end CN2 also contact resistance R69, the other end of resistance R69 connects one end of electric capacity C65, the other end of electric capacity C65 connects one end of power output end CN3, the other end of power output end CN3, the other end of power output end CN3 also connects the other end of electric capacity C62 respectively, the other end of electric capacity C67, the drain electrode of metal-oxide-semiconductor Q61, the source electrode of metal-oxide-semiconductor Q64, the drain electrode of metal-oxide-semiconductor Q62, the source electrode of metal-oxide-semiconductor Q65, one end of resistance R66, pulse signal JB2 holds,
The other end of resistance R66 connects the grid of metal-oxide-semiconductor Q61, the grid of metal-oxide-semiconductor Q62, one end of iron inductance L61 respectively, the other end of resistance R610 connects the grid of metal-oxide-semiconductor Q64, the grid of metal-oxide-semiconductor Q65, one end of iron inductance L62 respectively, one end of the other end contact resistance R63 of iron inductance L61, the other end of resistance R63 connects pulse signal JB1 end, one end of the other end contact resistance R68 of iron inductance L62, the other end of resistance R68 connects pulse signal JA1 end.
5. the control circuit of plasma spray apparatus according to claim 1, is characterized in that, described driving circuit comprises the pulse width modulating chip U2 of TL494 type, resistance R725, electric capacity C718, electric capacity C719, resistance R729, electric capacity C720, resistance R733, adjustable resistance RW72, resistance R734, resistance R732, electric capacity C721, electric capacity C717, electric capacity C716, iron inductance L71, resistance R720, resistance R721, the triode Q78 of 8550 types, the triode Q76 of 8050 types, resistance R716, the diode D77 of IN4148 type, the diode D710 of IN4148 type, the diode D78 of IN4148 type, the diode D711 of IN4148 type, the triode Q75 of 8050 types, the triode Q77 of 8550 types, resistance R717, resistance R722, resistance R723, resistance R714, resistance R711, the triode Q73 of 8550 types, the triode Q72 of 8050 types, the diode D72 of IN4148 type, the diode D74 of IN4148 type, the diode D73 of IN4148 type, the diode D75 of IN4148 type, the triode Q71 of 8050 types, the triode Q74 of 8550 types, resistance R710, resistance R713,
One end of the 1st pin contact resistance R725 of described pulse width modulating chip U2, the 2nd pin of described pulse width modulating chip U2 connects one end of electric capacity C718 respectively, 13rd pin of pulse width modulating chip U2, 14th pin of pulse width modulating chip U2, 16th pin of pulse width modulating chip U2, one end of electric capacity C719, one end of the 3rd pin difference contact resistance R732 of described pulse width modulating chip U2, one end of electric capacity C721, the other end ground connection of resistance R732, the other end ground connection of electric capacity C721, the 4th pin of described pulse width modulating chip U2 connects the other end of electric capacity C719 respectively, one end of resistance R729, the 5th pin of described pulse width modulating chip U2 connects one end of electric capacity C720, one end of the 6th pin contact resistance R733 of described pulse width modulating chip U2, and what the other end of resistance R733 connected adjustable resistance RW72 respectively fixes 3 ends, one end of resistance R734, the 7th pin of pulse width modulating chip U2, the other end of resistance R725, the other end of electric capacity C718, the other end of resistance R729, the other end of electric capacity C720, adjustable resistance RW72 fixes 1 end, adjustable 2 ends of adjustable resistance RW72, the equal ground connection of the other end of resistance R734, the 8th pin of described pulse width modulating chip U2 connects the 11st pin of pulse width modulating chip U2 respectively, 12nd pin of pulse width modulating chip U2, one end of electric capacity C717, one end of electric capacity C716, one end of iron inductance L71, the other end ground connection of electric capacity C717, the other end ground connection of electric capacity C716, the other end connecting analog 15V voltage input end of iron inductance L71, one end of the 9th pin contact resistance R723 of described pulse width modulating chip U2, one end of the 10th pin contact resistance R720 of described pulse width modulating chip U2
The base stage of the other end difference connecting triode Q76 of resistance R720, the base stage of triode Q78, one end of resistance R721, the base stage of triode Q72, the base stage of triode Q73, one end of resistance R714, one end of the collector contact resistance R716 of triode Q76, the other end of resistance R716 connects the negative pole of diode D77 respectively, simulation 15V voltage input end, the negative pole of diode D78, one end of resistance R717, the emitter of the emitter difference connecting triode Q78 of triode Q76, the positive pole of diode D77, the negative pole of diode D710, voltage signal LB1 holds, the other end of the collector contact resistance R717 of triode Q75, the emitter of the emitter difference connecting triode Q77 of triode Q75, voltage signal LB2 holds, the positive pole of diode D78, the negative pole of diode D711, the other end of described resistance R721, the collector of triode Q78, the positive pole of diode D710, the positive pole of diode D711, the collector of triode Q77, the equal ground connection in one end of resistance R722,
One end of the collector contact resistance R711 of triode Q72, the other end of resistance R711 connects the negative pole of diode D72 respectively, simulation 15V voltage input end, the negative pole of diode D73, one end of resistance R710, the emitter of the emitter difference connecting triode Q73 of triode Q72, the positive pole of diode D74, the negative pole of diode D72, voltage signal LA1 holds, the other end of the collector contact resistance R710 of triode Q71, the emitter of the emitter difference connecting triode Q74 of triode Q71, voltage signal LA2 holds, the positive pole of diode D73, the negative pole of diode D75, the other end of described resistance R714, the collector of triode Q73, the positive pole of diode D74, the positive pole of diode D75, the collector of triode Q74, the equal ground connection in one end of resistance R713,
The other end, the base stage of triode Q75, the base stage of triode Q77, the base stage of triode Q71, the base stage of triode Q74, the other end of resistance R713 of the other end difference contact resistance R722 of described resistance R723.
6. the control circuit of plasma spray apparatus according to claim 5; it is characterized in that, described protection circuit comprise current transformer P81, electric capacity C82, rectifier bridge D81, the polar capacitor C81 of resistance R84, DB107 type, adjustable resistance RW81, resistance R83, resistance R88, polar capacitor C83, polar capacitor C85, resistance R89, resistance R86, resistance R85, resistance R81, electric capacity C86, comparer U81A, the resistance R87 of comparer U81B, LM393 type of electric capacity C84, LM393 type, resistance R82,
One end of current transformer P81 connects one end of electric capacity C82 respectively, one end of resistance R84, 1st pin of rectifier bridge D81, the other end of current transformer P81 connects the other end of electric capacity C82 respectively, the other end of resistance R84, 3rd pin of rectifier bridge D81, the 4th pin of rectifier bridge D81 connects the positive pole of polar capacitor C81 respectively, adjustable resistance RW81 fixes 1 end, the 6th pin of rectifier bridge D81, the negative pole of polar capacitor C81, adjustable resistance RW81 fixes 3 ends, the negative pole of polar capacitor C83, one end of resistance R85, the equal ground connection in one end of electric capacity C84, one end of the adjustable 2 ends difference contact resistance R83 of adjustable resistance RW81, one end of resistance R88, the other end of resistance R83 connects the positive pole of polar capacitor C83 respectively, input 3 end of comparer U81A, one end of the input 2 end difference contact resistance R81 of comparer U81A, the other end of resistance R85, the other end of electric capacity C84, the other end of resistance R81 connects 5V voltage input end, and input 8 end of comparer U81A connects 5V voltage input end, the output 4 end ground connection of comparer U81A, one end of the output 1 end difference contact resistance R82 of comparer U81A, the signal input part of the current signal of the detection of described control display circuit, the other end of resistance R82 connects 5V voltage input end, the signal output part ground connection of the current signal of the detection of described control display circuit,
The other end of resistance R88 connects the positive pole of polar capacitor C85 respectively, input 5 end of comparer U81B, one end of the input 6 end difference contact resistance R86 of comparer U81B, one end of resistance R89, one end of electric capacity C86, the negative pole of polar capacitor C85, the other end of resistance R89, the equal ground connection of the other end of electric capacity C86, the other end of resistance R86 connects 5V voltage input end, one end of the output 7 end difference contact resistance R87 of comparer U81B, the signal input part of the air pressure signal of the detection of described control display circuit, the other end of resistance R87 connects 5V voltage input end, the signal output part ground connection of the air pressure signal of the detection of described control display circuit.
7. the control circuit of plasma spray apparatus according to claim 6; it is characterized in that; described protection circuit also comprises the triode Q910 connecing air pressure inductor port J94, resistance R928, diode D912, the resistance R927 of resistance R924, IN4148 type, resistance R930, resistance R931,8050 types
The one end meeting air pressure inductor port J94 connects the 11st pin of described process chip U1, connect one end of the other end contact resistance R928 of air pressure inductor port J94, one end of the other end difference contact resistance R931 of resistance R928, the base stage of triode Q910, one end of the collector difference contact resistance R930 of triode Q910, the positive pole of diode D912, one end of resistance R924, one end of the negative pole contact resistance R927 of diode D912, the other end of resistance R927 connects the 4th pin of described pulse width modulating chip U2, the other end connecting analog 15V voltage input end of resistance R924, the other end of resistance R931, the emitter of triode Q910, the equal ground connection of the other end of resistance R930.
8. a plasma spray apparatus, it is characterized in that, comprise the control circuit of high frequency transformer and the plasma spray apparatus as described in claim 1-7 any one, the voltage input end of described high frequency transformer is connected with the power output end of the control circuit of described plasma spray apparatus.
9. plasma spray apparatus according to claim 8, is characterized in that, described plasma spray apparatus is plasma gun.
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| CN201410427782.7A CN104238407B (en) | 2014-08-27 | 2014-08-27 | Control circuit of plasma spraying device and plasma spraying device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109731856A (en) * | 2018-12-29 | 2019-05-10 | 广东晶科电子股份有限公司 | A kind of detection system of LED support plasma cleaning process |
| CN110412934A (en) * | 2019-07-09 | 2019-11-05 | 中山国瀛自动化科技有限公司 | A kind of hot pressing heat sealing machine control circuit |
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2014
- 2014-08-27 CN CN201410427782.7A patent/CN104238407B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109731856A (en) * | 2018-12-29 | 2019-05-10 | 广东晶科电子股份有限公司 | A kind of detection system of LED support plasma cleaning process |
| CN110412934A (en) * | 2019-07-09 | 2019-11-05 | 中山国瀛自动化科技有限公司 | A kind of hot pressing heat sealing machine control circuit |
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