CN103107705B - High-voltage power apparatus and output control method thereof for diesel engine particles clarifier - Google Patents
High-voltage power apparatus and output control method thereof for diesel engine particles clarifier Download PDFInfo
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Abstract
A kind of diesel engine particles clarifier makes particle ignition with high-voltage power apparatus and output control method thereof for the particle sparking to diesel engine automobile particulate burning purifying device, this high voltage source converts battery tension to high pressure by inversion, and it comprises: batteries, direct current regulation circuit, signal computing circuit, signal modulation circuit, power amplification circuit, step-up transformer and High voltage output rectification circuit thereof, high-voltage signal sample circuit, current sampling circuit; It is characterized in that: described high voltage source also comprises a single-chip microcomputer, the pin of the I/O mouth of single-chip microcomputer is connected, is connected with the output of current sampling circuit, the reciprocal square wave of the exportable phase place of pin being connected with the input of signal modulation circuit with the input of described signal modulation circuit respectively. Within the time period of particle accumulation; single-chip microcomputer can be exported square wave discontinuously there is inversion discontinuously; in the time that particle accumulation reaches regeneration point, single-chip microcomputer continuous wave output square wave makes particle sparking, ignition, greatly reduces thereby make high-voltage power apparatus draw electric energy to battery.
Description
Technical field
The present invention relates to a kind of diesel engine particles clarifier high-voltage power apparatus and output control method thereof, specifically Vehicular accumulator cell power inverter is become to high voltage source, make particle ignition for the particle sparking to diesel engine automobile particulate burning purifying device.
Background technology
I have applied for a utility model patent " electrical breakdown formula purifier for purifying particles in tail gas of diesel engine " before this, and its application number is " 201120209011.2 ". Catch the particle in tail gas with ceramic for filtration, regenerate when the particle in pottery reaches when a certain amount of; When regeneration, need high voltage source; the operation principle of regeneration is: anode, the negative terminal of high-voltage DC power supply connect respectively the electrode in ceramic for filtration; between electrode, form an electrostatic field; electrostatic field voltage is 5KV to 8KV, and the particle that ceramic for filtration filters is conductive materials, in the time that ceramic internal granular layer is thinner; can not produce and puncture; when ceramic endoparticle runs up to when a certain amount of, breakdown voltage reduces and produces electric spark, and electric spark makes particle accumulated heat, ignition. For one of this requirement to high voltage source is that its output voltage will be stablized, two of requirement is to try not High voltage output to reduce the power consumption of battery before reaching regeneration point.
High voltage source on market is generally used for electrostatic precipitation, it provides the power supply of energy from civil power, be not suitable for working on automobile, for also not applicable high voltage source on the requirement market of the particle sparking in diesel engine automobile particulate burning purifying device, be therefore necessary to design a kind of new high voltage source in addition.
Summary of the invention
The technical problem to be solved in the present invention is: a kind of diesel engine particles clarifier high-voltage power apparatus is provided, and while converting the power supply of Vehicular accumulator cell to stable high voltage source and work, the electric energy of battery consumption is few.
This high-voltage power apparatus comprises: the batteries 1 that electric energy is provided, by setting signal and feedback signal comparison so that the stable signal computing circuit 3 of High voltage output, the d. c. voltage signal that signal computing circuit 3 is exported is modulated into the modulation circuit 4 of AC signal, the power amplification circuit 5 that AC signal is amplified, the step-up transformer 6 that alternating voltage after amplifying is boosted, be DC voltage the high-voltage rectifier 7 that is delivered to particulate burning purifying device to the ac high voltage rectification after boosting, the high-voltage signal sample circuit 8 of feedback signal is provided, detect the current sampling circuit 9 of curent change in High voltage output rectification circuit 7, batteries 1 is carried out to filtering voltage regulation and provide the direct current regulation circuit 2 of operating voltage for high-voltage power apparatus, described setting signal is from the output voltage of direct current regulation circuit 2,
It is characterized in that: described high-voltage power apparatus also comprises a single-chip microcomputer IC1, the pin P1.6 of the I/O mouth of single-chip microcomputer, P1.7 can produce the reciprocal square wave of phase place for modulating DC voltage, pin P1.6, P1.7 respectively with the input 45 of described signal modulation circuit 4, 46 connect, pin P1.5 is connected with the output 92 of current sampling circuit 9, in the time of current sampling circuit 9 no pulse current signal output, the pin P1.6 of the I/O mouth of single-chip microcomputer, P1.7 is interrupted the reciprocal square wave of output phase, in the time that current sampling circuit 9 has pulsed current signal output, pin P1.6, P1.7 continues the reciprocal square wave of output phase,
Described signal computing circuit 3 is made up of resistance R 2-R5, potentiometer RW1, triode T1; One end of resistance R 2 is that setting signal input 31 connects direct current regulation circuit 2+5V power supply; Its other end is connected with one end of resistance R 3 by potentiometer RW1; The other end of resistance R 3 is the negative pole that feedback signal input 32 connects the output of rectifier QL2 in high-voltage signal sample circuit 8, the cursor slide end of potentiometer RW1 is connected with the base stage of triode T1 by resistance R 4, the transmitting of triode T1 very the output 33 of operation result signal by resistance R 5 ground connection, its colelctor electrode connect direct current regulation circuit 2+5V power supply;
Described modulation circuit 4 is made up of resistance R 8-R11, triode T2, T3, capacitor C 8, C9, diode D2, D3, the base stage of triode T2 is connected with the pin P1.6 of single-chip microcomputer IC1 by resistance R 8, the colelctor electrode of triode T2 is connected with the emitter stage pin of triode T1 by resistance R 10, the colelctor electrode of one termination triode T2 of capacitor C 8, the other end of capacitor C 8 connect the negative pole of diode D2, the plus earth of diode D2, the grounded emitter of triode T2; The base stage of triode T3 is connected with the pin P1.7 of single-chip microcomputer IC1 by resistance R 9, the colelctor electrode of triode T3 is connected with the emitter stage pin of triode T1 by resistance R 11, the colelctor electrode of one termination triode T3 of capacitor C 9, the other end of capacitor C 9 connect the negative pole of diode D3, the plus earth of diode D3, the grounded emitter of triode T3; The upper square wave that produces single spin-echo of pin P1.7, pin P1.6, can make triode T2, T3 alternate conduction, cut-off, and operation result signal is carried out to copped wave, makes operation result signal become AC signal by direct current signal, by capacitor C 8, C9 output.
Described power amplification circuit is made up of the primary coil L of triode T4-T7, step-up transformer 6, and the AC signal that signal modulation circuit 4 is exported is recommended amplification; Triode T4, T5 form a multiple tube to improve multiplication factor, the base stage of triode T4 connects the other end of capacitor C 8, the emitter stage of triode T4 connects the base stage of triode T5, and the colelctor electrode of triode T4, T5 connects one end of transformer L, the grounded emitter of triode T5; Triode T6, T7 form another multiple tube, the base stage of triode T6 connects the other end of capacitor C 9, the emitter stage of triode T6 connects the base stage of triode T7, the colelctor electrode of triode T6, T7 connects the other end of transformer L, the grounded emitter of triode T7, the centre cap Le of transformer L is connected with the output U1 of batteries.
Described high-voltage signal sample circuit 8 comprises: rectifier QL2, filter capacitor C4, optocoupler GR1, resistance R 6, R7, the input of rectifier QL2 is connected with a, a ' end of the secondary coil L2 of step-up transformer, output and the filter capacitor C4 of rectifier QL2 are connected in parallel, the plus earth of the output of rectifier QL2, its negative pole connects the other end of the resistance R 3 in signal computing circuit 3; Input 2 pin of optocoupler GR1 connect the negative pole of filter capacitor C4, input 1 pin of optocoupler GR1 is connected with the positive pole of filter capacitor C4 by resistance R 6, the output 3 pin ground connection of optocoupler GR1, optocoupler GR1 output 4 pin by resistance R 7 connect direct current regulation circuit 2+5V power supply, optocoupler GR1 output 4 pin connect the P1.4 pin of single-chip microcomputer IC1; In the time that high-voltage power apparatus is working properly, the secondary coil L2 of step-up transformer should have induced voltage, it is low level by its output 4 pin that the input of optocoupler GR1 has electric current, the non-inductive voltage of secondary coil L2 of step-up transformer in the time that high-voltage power apparatus breaks down, optocoupler GR1 output 4 pin are high level.
Described current sampling circuit 9 is by pulse transformer B2, resistance R 12, R13, triode T8, diode D1 composition, the negative pole of the capacitor C 3 in an elementary termination High voltage output rectification circuit 7 of pulse transformer B2, another termination load, b ' the end ground connection of B2 level of pulse transformer, b end connects the base stage of triode T8 by resistance R 12, the colelctor electrode of triode T8 by resistance R 13 connect direct current regulation circuit 2+5V power supply, the base stage of triode T8 connects the negative pole of diode D1, the emitter stage of triode T8 connects the positive pole of diode D1, the grounded emitter of triode T8, the colelctor electrode of triode T8 meets the pin P1.5 of single-chip microcomputer IC1.
The Voltage-output control method of described high-voltage power apparatus is: load program to single-chip microcomputer IC1 in advance, the step that this program is carried out is:
I, setting section one detection time, light-off time section and dwell time section; Described section detection time is 10-15 seconds, and described light-off time section is 10-15 minutes, and described dwell time section is 3-4 minutes;
II, make in section in detection time to produce the reciprocal square wave of phase place on pin P1.7, the P1.6 of I/O mouth of single-chip microcomputer, make high-voltage power apparatus have high tension voltage output, and detect on the pin P1.5 of I/O mouth of single-chip microcomputer whether have pulsed current signal;
As having pulsed current signal on the P1.5 pin of the I/O mouth of single-chip microcomputer in detection time section, press the time that light-off time section is set, in light-off time section, continue to produce the reciprocal square wave of phase place on pin P1.7, the P1.6 of the I/O mouth that makes single-chip microcomputer, make high-voltage power apparatus have high tension voltage output to continue sparking and make particle accumulated heat, the ignition in clarifier, then the time of setting by dwell time section, in dwell time section, make the square wave on pin P1.7, P1.6 not produce; Then repeating step II;
As no pulse current signal all the time on the pin P1.5 of the I/O mouth of single-chip microcomputer in detection time section, the time of setting by dwell time section, in dwell time section, make the square wave on pin P1.7, P1.6 not produce; Then repeating step II;
In the time that the square wave on pin P1.7, the P1.6 of the I/O of single-chip microcomputer mouth does not produce, the level state of pin P1.7, P1.6 is low level.
Voltage-output stable generally realized by negative-feedback technology, but may occur self-oscillation and make output voltage unstable, for solving this technical problem in above-mentioned technical scheme, in signal computing circuit 3, there is calculation function part only by the setting signal voltage with stable amplitude, high pressure feedback signal voltage, resistance R 2, R3, potentiometer RW1 is connected in series and forms loop, operation result is exported by the cursor slide end of potentiometer RW1, simple and the resistance R 2 of the electric circuit constitute, R3, potentiometer RW1 is passive device and can produce self-oscillation and also can not produce temperature drift, operation result can directly be drawn by Kirchhoff's law, operation result is accurate, the amplitude of its operation result signal can make the high tension voltage value stabilization of output after amplifying. in signal modulation circuit 4, by triode T2, T3 alternate conduction, cut-off, operation result signal is carried out to copped wave, make operation result signal become AC signal by direct current signal, the amplitude of AC signal is consistent with modulated direct current signal amplitude. the line design of signal computing circuit 3 and signal modulation circuit 4 can make operation result signal amplitude become fixing proportionate relationship with high tension voltage value, has avoided the generation of self-excitation phenomena.
In diesel engine particles clarifier, particle needs a period of time accumulation just to reach regeneration point, and within the time period of particle accumulation, single-chip microcomputer is only exported square wave discontinuously, and inversion occurs discontinuously, greatly reduces thereby make high-voltage power apparatus draw electric energy to battery.
Brief description of the drawings
Fig. 1 is block diagram of the present invention.
Fig. 2 is the circuit theory diagrams of the preferred embodiment of the present invention.
Fig. 3 is the program flow diagram of single-chip microcomputer.
Fig. 4 is the subprogram of square wave output in Fig. 3.
Detailed description of the invention
Now contrast brief description of the drawings the preferred embodiments of the present invention.
This high-voltage power apparatus comprises: batteries 1, direct current regulation circuit 2, signal computing circuit 3, signal modulation circuit 4, power amplification circuit 5, step-up transformer 6, high-voltage rectifier 7, high-voltage signal sample circuit 8, current sampling circuit 9, single-chip microcomputer IC1.
The output U2 of described batteries 1 receives the input of direct current regulation circuit 2, and the output 21 of direct current regulation circuit 2 provides working power to the circuit in high-voltage power apparatus;
Described signal computing circuit 3 has the input 32 of input 31, feedback signal of setting signal and setting signal and feedback signal and subtracts the operation result signal output part 33 of computing, input 31 connects the output 21 of direct current regulation circuit 2, and input 32 connects the output 81 of high-voltage signal sample circuit 8;
Described modulation circuit 4 has the input 41,42 of two road operation result signals and for the input 45,46 of modulation operation consequential signal Er road square-wave signal and the AC signal output 43,44 after modulation, described input 41,42 connects the output 33 of signal computing circuit 3;
Described power amplification circuit 5 has input 51,52 and output 53,54, input 51,52 is connected with the output 43,44 of modulation circuit 4 respectively, output 53,54 is connected to respectively the two ends of the primary coil L of step-up transformer 6, and the centre cap Le of the primary coil L of described step-up transformer 6 receives another output U1 of batteries;
The input of described high-voltage signal sample circuit 8 is connected with two ends a, a ' of the secondary coil L2 of step-up transformer 6, after rectification, is exported by output 81;
Described current sampling circuit 9 comprises current sensor B2, and its input is serially connected in the current loop of High voltage output rectification circuit 7, and the current signal of its output b, b ' output is exported by output 92 after rectification, amplification;
It is characterized in that: described high-voltage power apparatus also comprises a single-chip microcomputer IC1, pin P1.6, the P1.7 of the I/O mouth of single-chip microcomputer is connected with the input 45,46 of described modulation circuit 4 respectively, pin P1.5 is connected with the output 92 of current sampling circuit 9, in the time of current sampling circuit 9 no pulse current signal output, pin P1.6, the P1.7 of the I/O mouth of single-chip microcomputer is interrupted the reciprocal square wave of output phase, in the time that current sampling circuit 9 has pulsed current signal output, pin P1.6, P1.7 continue the reciprocal square wave of output phase.
Described batteries 1 is Vehicular accumulator cell, batteries by multiple batteries be composed in series one output U1 voltage 24V, another output U2 voltage is 12V.
Described direct current regulation circuit 2 provides steady operation power supply to the circuit in described high-voltage power apparatus, and it is 7805 by inductance L G, capacitor C 5-C7, integrated regulator IC2(model) form; One end of inductance L G is connected with the positive pole of battery U2 by K switch 2, the other end of inductance L G is connected with 1 pin of integrated regulator IC2, this tie point passes through capacitor C 5 ground connection, the 2 pin ground connection of integrated regulator IC2, between 3 pin of integrated regulator IC2 and ground, be parallel with filter capacitor C6, C7, the 3 pin output+5V power supplys of integrated regulator IC2; Batteries is generally connected with generator, and voltage ripple when generating in batteries is larger, selects inductance can effectively suppress ripple.
Described signal computing circuit 3 is made up of resistance R 2-R5, potentiometer RW1, triode T1; One end of resistance R 2 is that setting signal input 31 connects direct current regulation circuit 2+5V power supply (output 21); Its other end is connected with one end of resistance R 3 by potentiometer RW1; The other end of resistance R 3 is the negative pole (output 81) that feedback signal input 32 connects the output of rectifier QL2 in high-voltage signal sample circuit 8, the cursor slide end of potentiometer RW1 is connected with the base stage of triode T1 by resistance R 4, resistance R 5 ground connection, connect+5V of its colelctor electrode power supply are passed through in the transmitting of triode T1 very operation result output 33. In signal computing circuit 3, setting signal and feedback signal subtract computing, and its operation result amplifies and can make high tension voltage output keep stable through output; Regulator potentiometer RW1 can change High voltage output magnitude of voltage; Signal operation also can be realized with operational amplifier, but uses operational amplifier to need positive and negative voltage-stabilized power supply, and this voltage-stabilized power supply need to isolate with battery, increases like this manufacturing cost of high-voltage power apparatus.
Described modulation circuit 4 is made up of resistance R 8-R11, triode T2, T3, capacitor C 8, C9, diode D2, D3, the base stage of triode T2 is by resistance R 8(square-wave signal input 45) be connected with the pin P1.6 of single-chip microcomputer IC1, the colelctor electrode of triode T2 is by resistance R 10(operation result signal input part 41) be connected with the emitter stage pin of triode T1, the colelctor electrode of one termination triode T2 of capacitor C 8, the other end (AC signal output 43) of capacitor C 8 are by diode D2 ground connection, the grounded emitter of triode T2; The base stage of triode T3 is by resistance R 9(square-wave signal input 46) be connected with the pin P1.7 of single-chip microcomputer IC1, the colelctor electrode of triode T3 is by resistance R 11(operation result signal input part 42) be connected with the emitter stage pin of triode T1, the colelctor electrode of one termination triode T3 of capacitor C 9, the other end (AC signal output 44) of capacitor C 9 are by diode D3 ground connection, the grounded emitter of triode T3; The program that is equipped with in single-chip microcomputer IC1 makes the upper square wave that produces single spin-echo of pin P1.7, pin P1.6, and square wave frequency is 40KHZ; This square wave can make triode T2, T3 alternate conduction, cut-off, and operation result signal is carried out to copped wave, makes operation result signal become AC signal by direct current signal, by capacitor C 8, C9 output.
Described power amplification circuit is made up of the primary coil L of triode T4-T7, step-up transformer 6, and the AC signal that signal modulation circuit 4 is exported is recommended amplification; Triode T4, T5 form a multiple tube to improve multiplication factor, the base stage (input 51) of triode T4 connects the output 43 of capacitor C 8, the colelctor electrode (output 53) of triode T4, T5 connects one end of transformer L, the grounded emitter of triode T5; Triode T6, T7 form another multiple tube, the base stage (input 52) of triode T6 connects the output 44 of capacitor C 9, the colelctor electrode (output 54) of triode T6, T7 connects the other end of transformer L, the grounded emitter of triode T7, the centre cap Le of transformer L is connected with the output U1 of batteries by K switch 1.
Described step-up transformer 6 has centre tapped primary coil L, secondary coil L1, L2, secondary coil L1 is step-up coil, in the time of the centre tapped DC voltage 24V of primary coil L, the output voltage of secondary coil L1 is for exchanging 6KV left and right, secondary coil L2 is that its output voltage of sampling coil is for exchanging 4V left and right, described coil is enclosed within on a high frequency magnetic core, adopts high frequency magnetic core can make volume of transformer reduce.
Described high-voltage rectifier 7 is made up of rectifier QL1, capacitor C 3, and the input of rectifier QL1 is connected with secondary coil L1, the DC voltage of the output shunt capacitance C3 of rectifier QL1, its output is 7.2KV left and right.
Described current sampling circuit 9 is made up of pulse transformer B2, resistance R 12, R13, triode T8, diode D1, negative pole, another termination load of capacitor C 3 in an elementary termination High voltage output rectification circuit 7 of pulse transformer B2, b ' the end ground connection of B2 level of pulse transformer, b end meets triode T8 base stage by resistance R 12, the colelctor electrode of triode T8 is by connect+5V of resistance R 13 power supply, between the base stage of triode T8, emitter stage, be connected to diode D1, the colelctor electrode (output 92) of triode T8 meets the pin P1.5 of single-chip microcomputer IC1; The function of current sampling circuit 9 is: in the time that electric spark produces, in the output loop of high-voltage power apparatus, can produce pulse current, the secondary meeting of pulse transformer B2 induces voltage, amplifies to single-chip microcomputer IC1 and carries spark signal through triode T8.
Described high-voltage signal sample circuit 8 comprises: rectifier QL2, filter capacitor C4, optocoupler GR1, resistance R 6, R7, the input of rectifier QL2 is connected with a, a ' end of the secondary coil L2 of step-up transformer, output and the filter capacitor C4 of rectifier QL2 are connected in parallel, the plus earth of the output of rectifier QL2, its negative pole (output 81) connects one end (feedback signal input 32) of the resistance R 3 in signal computing circuit 3; Input 2 pin of optocoupler GR1 connect the negative pole of filter capacitor C4, input 1 pin of optocoupler GR1 is connected with the positive pole of filter capacitor C4 by resistance R 6, the output 3 pin ground connection of optocoupler GR1, optocoupler GR1 output 4 pin are by connect+5V of resistance R 7 power supply, and optocoupler GR1 output 4 pin (output 82) meet the pin P1.4 of single-chip microcomputer IC1; In the time that high-voltage power apparatus is working properly, the secondary coil L2 of step-up transformer should have induced voltage, it is low level by its output 4 pin that the input of optocoupler GR1 has electric current, the non-inductive voltage of secondary coil L2 of step-up transformer in the time that high-voltage power apparatus breaks down, optocoupler GR1 output 4 pin are high level, can judge that accordingly whether high-voltage power apparatus work is normal.
Described its model of single-chip microcomputer IC1 is AT89C2051 or the close single-chip microcomputer of other function, because the structure of single-chip microcomputer and operation principle are for general electronic technology personnel understand the pin that therefore only draws part I/O mouth in Fig. 2, support oscillating circuit and the reset circuit of single-chip microcomputer work not to draw. the pin P1.7 of described single-chip microcomputer, P1.6 is as square wave output, pin P1.7, its phase place of square wave on P1.6 is opposite each other, pin P1.7 connects the base stage of triode T3 by resistance R 9, pin P1.6 connects the base stage of triode T2 by resistance R 8, pin P1.5 is as pulsed current signal (spark signal) input, pin P1.5 connects the colelctor electrode of triode T8, pin P1.4 is as high voltage source working signal input, pin P1.4 connects 4 pin of optocoupler GR1, pin P1.3 is as the high voltage source index signal output of normally working, the negative pole of pin P1.3 sending and receiving optical diode LED1, the positive pole of LED 1 is by connect+5V of resistance R 14 power supply, pin P1.2 is as high voltage source failure alarm signal output, the negative pole of pin P1.2 sending and receiving optical diode LED2, the positive pole of LED 2 is by connect+5V of resistance R 15 power supply.
For reducing the power consumption of the battery Voltage-output to high-voltage power apparatus; during particle accumulation, make the high tension voltage of high-voltage power apparatus be interrupted output; the high tension voltage continuous wave output of voltage source device in the time that particle accumulation reaches regeneration point; adopt following control method: load program to single-chip microcomputer IC1 in advance, the step that this program is carried out is:
I, setting section one detection time, light-off time section and dwell time section; Light-off time section and dwell time section; Described section detection time is 10-15 seconds, and described light-off time section is 10-15 minutes, and described dwell time section is 3-4 minutes;
II, make in section in detection time to produce the reciprocal square wave of phase place on pin P1.7, the P1.6 of I/O mouth of single-chip microcomputer, make high-voltage power apparatus have high tension voltage output, and detect on the pin P1.5 of I/O mouth of single-chip microcomputer whether have pulsed current signal;
As having pulsed current signal on the pin P1.5 of the I/O mouth of single-chip microcomputer in detection time section, press the time that light-off time section is set, in light-off time section, continue to produce the reciprocal square wave of phase place on pin P1.7, the P1.6 of the I/O mouth that makes single-chip microcomputer, make high-voltage power apparatus have high tension voltage output to continue sparking and make particle accumulated heat, the ignition in clarifier, then the time of setting by dwell time section, in dwell time section, make the square wave on pin P1.7, P1.6 not produce; Then repeating step II;
As no pulse current signal all the time on the pin P1.5 of the I/O mouth of single-chip microcomputer in detection time section, the time of setting by dwell time section, in dwell time section, make the square wave on pin P1.7, P1.6 not produce; Then repeating step II.
In the time of the upper generation of pin P1.7, the P1.6 of the I/O of single-chip microcomputer mouth square wave and high-voltage power apparatus is high level without the pin P1.4 of high tension voltage output I/O mouth, the power amplification circuit 5 that shows high-voltage power apparatus has fault, makes that relay indicating light LED 1 goes out, fault alarm indicator lamp LED 2 is bright.
Program is housed in single-chip microcomputer and can realizes above-mentioned functions, now contrast Fig. 3, Fig. 4 and illustrate the execution step of single-chip microcomputer Program:
A, to make pin P1.3 be 0(low level), pin P1.2 is 1(high level), make that relay indicating light LED 1 is bright, fault alarm indicator lamp LED 2 goes out;
B, call square wave output subroutine and on pin P1.7, P1.6, produce the reciprocal square wave of phase place, continue 15 seconds;
C, between the positive half period of square wave output, detect the pulsed current signal on pin P1.5, forward H step output square wave 10-15 minutes to if any pulsed current signal, make high-voltage power apparatus have high tension voltage output to continue sparking and make particle accumulated heat, the ignition in clarifier, then forward C step to; As turned D step without spark signal;
D, between the negative half-cycle of square wave output, detect high voltage source working signal on P1.4 pin as the E step that forwards to working properly, forward G step to make pin P1.7, P1.6 be 0 as broken down, stop square wave output, pin P1.3 is 1, pin P1.2 is 0, make that relay indicating light LED 1 goes out, fault alarm indicator lamp LED 2 is bright, program is carried out and is finished;
If the output of E square wave reaches 15 seconds and turns F step, as do not forwarded C step to by 15 seconds;
F, in the time that square wave output reaches 15 seconds, making pin P1.7, P1.6 is 0, stops square wave output 4 minutes to reduce the consumption of electric energy, then forwards B step to.
The step of square wave output subroutine is:
B1, make that pin P1.7 is 1, pin P1.6 is 0;
B2, time delay half period time;
B3, make that pin P1.7 is 0, pin P1.6 is 1;
B4, time delay half period time;
B5, return.
The particle filtering in diesel engine particles clarifier will be through accumulating and just reach regeneration point after a while; at this moment; high-voltage power apparatus does not need to export high pressure always; can take the method for interruption output high pressure to reduce the consumption of electric energy, in the time that diesel engine particles clarifier reaches regeneration point, make again high pressure continue to export to produce electric spark and make particle accumulated heat, ignition. In the time that breaking down, high-voltage power apparatus need provide an alarm signal, to take measures.
The program arranging in single-chip microcomputer IC1 can make pin P1.7, P1.6 upper generation square wave and continue for some time, and makes triode T2, T3 alternate conduction, cut-off, and the output of high-voltage power apparatus continues for some time; Then make pin P1.7, P1.6 in low level a period of time, triode T2, T3 cut-off within this period, high-voltage power apparatus is not exported, to reduce power consumption; Have between period of output at high-voltage power apparatus, access pin P1.5 has judged whether that electric spark produces, and if any keeping High voltage output 10-15 minutes, can make particle accumulated heat, the ignition in diesel engine particles clarifier in section between at this moment; Carry out the program of being interrupted output high tension voltage as do not continued.
The output of optocoupler GR1 in described high-voltage signal sample circuit 8 meets the pin P1.4 of single-chip microcomputer IC1, and in the time of high-voltage power apparatus no-output, output 4 pin of optocoupler GR1 are high level, and when high-voltage power apparatus has output, output 4 pin of optocoupler GR1 are low level; Program in single-chip microcomputer IC1 is accessed the pin P1.4 of single-chip microcomputer IC1 during having high tension voltage output, in the time that on pin P1.4, level is low, the pin P1.3 that makes single-chip microcomputer IC1 is that low level makes that LED 1 is bright, pin P1.2 is that high level goes out LED 2, represents high-voltage power apparatus normal operation; When the upper level of pin P1.4 is that high seasonal LED 1 goes out, LED 2 is bright, the operation of expression high-voltage power apparatus is broken down, and can not regenerate to diesel engine particles clarifier.
Claims (7)
1. a diesel engine particles clarifier high-voltage power apparatus, this high-voltage power apparatus comprises: the batteries (1) that electric energy is provided, by setting signal and feedback signal comparison so that the stable signal computing circuit (3) of High voltage output, the d. c. voltage signal of signal computing circuit (3) output is modulated into the modulation circuit (4) of AC signal, the power amplification circuit (5) that AC signal is amplified, the step-up transformer (6) that alternating voltage after amplifying is boosted, be DC voltage the high-voltage rectifier (7) that is delivered to particulate burning purifying device to the ac high voltage rectification after boosting, the high-voltage signal sample circuit (8) of feedback signal is provided, detect the current sampling circuit (9) of curent change in high-voltage rectifier (7), batteries (1) is carried out to filtering voltage regulation and provide the direct current regulation circuit (2) of operating voltage for high-voltage power apparatus, described setting signal is from the output voltage of direct current regulation circuit (2),
It is characterized in that: described high-voltage power apparatus also comprises a single-chip microcomputer IC1, the pin P1.6 of the I/O mouth of single-chip microcomputer, P1.7 produces the reciprocal square wave of phase place for modulating DC voltage, pin P1.6, P1.7 respectively with the input (45 of described modulation circuit (4), 46) connect, pin P1.5 is connected with the output (92) of current sampling circuit (9), in the time that current sampling circuit (9) no pulse current signal is exported, the pin P1.6 of the I/O mouth of single-chip microcomputer, P1.7 is interrupted the reciprocal square wave of output phase, in the time that current sampling circuit (9) has pulsed current signal output, pin P1.6, P1.7 continues the reciprocal square wave of output phase,
Described signal computing circuit (3) is made up of resistance R 2-R5, potentiometer RW1, triode T1; One end of resistance R 2 is that setting signal input (31) connects direct current regulation circuit (2)+5V power supply; Its other end is connected with one end of resistance R 3 by potentiometer RW1; The other end of resistance R 3 is the negative pole that feedback signal input (32) connects the output of rectifier QL2 in high-voltage signal sample circuit (8), the cursor slide end of potentiometer RW1 is connected with the base stage of triode T1 by resistance R 4, the transmitting of triode T1 very the output of operation result signal (33) by resistance R 5 ground connection, its colelctor electrode connect direct current regulation circuit (2)+5V power supply;
Described modulation circuit (4) is made up of resistance R 8-R11, triode T2, T3, capacitor C 8, C9, diode D2, D3, the base stage of triode T2 is connected with the pin P1.6 of single-chip microcomputer IC1 by resistance R 8, the colelctor electrode of triode T2 is connected with the emitter stage of triode T1 by resistance R 10, the colelctor electrode of one termination triode T2 of capacitor C 8, the other end of capacitor C 8 connect the negative pole of diode D2, the plus earth of diode D2, the grounded emitter of triode T2; The base stage of triode T3 is connected with the pin P1.7 of single-chip microcomputer IC1 by resistance R 9, the colelctor electrode of triode T3 is connected with the emitter stage of triode T1 by resistance R 11, the colelctor electrode of one termination triode T3 of capacitor C 9, the other end of capacitor C 9 connect the negative pole of diode D3, the plus earth of diode D3, the grounded emitter of triode T3; The square wave of the upper generation of pin P1.7, P1.6 single spin-echo, makes triode T2, T3 alternate conduction, cut-off, and operation result signal is carried out to copped wave, makes operation result signal become AC signal by direct current signal, by capacitor C 8, C9 output.
2. high-voltage power apparatus as claimed in claim 1, is characterized in that: described power amplification circuit (5) is made up of the primary coil L of triode T4-T7, step-up transformer (6), and the AC signal of modulation circuit (4) output is recommended to amplification; Triode T4, T5 form a multiple tube to improve multiplication factor, the base stage of triode T4 connects the other end of capacitor C 8, the emitter stage of triode T4 connects the base stage of triode T5, and the colelctor electrode of triode T4, T5 connects one end of step-up transformer (6) primary coil L, the grounded emitter of triode T5; Triode T6, T7 form another multiple tube, the base stage of triode T6 connects the other end of capacitor C 9, the emitter stage of triode T6 connects the base stage of triode T7, the colelctor electrode of triode T6, T7 connects the other end of step-up transformer (6) primary coil L, the grounded emitter of triode T7, the centre cap Le of transformer L is connected with the output U1 of batteries.
3. high-voltage power apparatus as claimed in claim 1, it is characterized in that: described high-voltage signal sample circuit (8) comprising: rectifier QL2, filter capacitor C4, optocoupler GR1, resistance R 6, R7, the input of rectifier QL2 is connected with a, a ' end of the secondary coil L2 of step-up transformer (6), output and the filter capacitor C4 of rectifier QL2 are connected in parallel, the plus earth of the output of rectifier QL2, its negative pole connects the other end of the resistance R 3 in signal computing circuit (3); Input 2 pin of optocoupler GR1 connect the negative pole of filter capacitor C4, input 1 pin of optocoupler GR1 is connected with the positive pole of filter capacitor C4 by resistance R 6, the output 3 pin ground connection of optocoupler GR1, optocoupler GR1 output 4 pin by resistance R 7 connect direct current regulation circuit (2)+5V power supply, optocoupler GR1 output 4 pin meet the pin P1.4 of single-chip microcomputer IC1; The secondary coil L2 of step-up transformer in the time that high-voltage power apparatus is working properly (6) has induced voltage, it is low level by its output 4 pin that the input of optocoupler GR1 has electric current, the non-inductive voltage of secondary coil L2 of step-up transformer in the time that high-voltage power apparatus breaks down, optocoupler GR1 output 4 pin are high level.
4. high-voltage power apparatus as claimed in claim 1, it is characterized in that: described current sampling circuit (9) is by pulse transformer B2, resistance R 12, R13, triode T8, diode D1 composition, the negative pole of the capacitor C 3 in an elementary termination high-voltage rectifier (7) of pulse transformer B2, another termination load, b ' the end ground connection of B2 level of pulse transformer, b end connects the base stage of triode T8 by resistance R 12, the colelctor electrode of triode T8 by resistance R 13 connect direct current regulation circuit (2)+5V power supply, the base stage of triode T8 connects the negative pole of diode D1, the emitter stage of triode T8 connects the positive pole of diode D1, the grounded emitter of triode T8, the colelctor electrode of triode T8 meets the pin P1.5 of single-chip microcomputer IC1.
5. high-voltage power apparatus as claimed in claim 1, it is characterized in that: the pin P1.4 of the I/O mouth of single-chip microcomputer IC1 connects optocoupler GR1 output 4 pin, the negative pole of the pin P1.3 sending and receiving optical diode LED1 of the I/O mouth of single-chip microcomputer IC1, the positive pole of LED 1 by resistance R 14 connect direct current regulation circuit (2)+5V power supply, the negative pole of the pin P1.2 sending and receiving optical diode LED2 of the I/O mouth of single-chip microcomputer IC1, the positive pole of LED 2 by resistance R 15 connect direct current regulation circuit (2)+5V power supply.
6. a high tension voltage output control method for high-voltage power apparatus as claimed in claim 1, loads program to single-chip microcomputer IC1 in advance, and the step that this program is carried out is:
I, setting section one detection time, light-off time section and dwell time section; Described section detection time is 10-15 seconds, and described light-off time section is 10-15 minutes, and described dwell time section is 3-4 minutes;
II, make in section in detection time to produce the reciprocal square wave of phase place on pin P1.7, the P1.6 of I/O mouth of single-chip microcomputer, make high-voltage power apparatus have high tension voltage output, and detect on the pin P1.5 of I/O mouth of single-chip microcomputer whether have pulsed current signal;
As having pulsed current signal on the pin P1.5 of the I/O mouth of single-chip microcomputer in detection time section, press the time that light-off time section is set, in light-off time section, continue to produce the reciprocal square wave of phase place on pin P1.7, the P1.6 of the I/O mouth that makes single-chip microcomputer, make high-voltage power apparatus have high tension voltage output to continue sparking and make particle accumulated heat, the ignition in clarifier, then the time of setting by dwell time section, in dwell time section, make the square wave on pin P1.7, P1.6 not produce; Then repeating step II;
As no pulse current signal all the time on the pin P1.5 of the I/O mouth of single-chip microcomputer in detection time section, the time of setting by dwell time section, in dwell time section, make the square wave on pin P1.7, P1.6 not produce; Then repeating step II.
7. control method as claimed in claim 6, is characterized in that: in the time that the square wave on pin P1.7, the P1.6 of the I/O of single-chip microcomputer mouth does not produce, the level state that makes pin P1.7, P1.6 is low level.
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| CN201110354489.9A CN103107705B (en) | 2011-11-10 | 2011-11-10 | High-voltage power apparatus and output control method thereof for diesel engine particles clarifier |
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| CN201110354489.9A CN103107705B (en) | 2011-11-10 | 2011-11-10 | High-voltage power apparatus and output control method thereof for diesel engine particles clarifier |
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| CN109412424B (en) * | 2018-12-21 | 2024-05-10 | 东文高压电源（天津）股份有限公司 | Amplitude and frequency adjustable high-voltage sine wave power supply circuit and implementation method |
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| CN2260403Y (en) * | 1995-12-30 | 1997-08-20 | 洛阳市金兰科技开发有限公司 | High frequency contravariant high valtage power supply arrangement for electrostatic cleaner |
| CN201404859Y (en) * | 2009-04-28 | 2010-02-17 | 上海冶金矿山机械厂 | Electric precipitation high frequency pulse feed high-voltage rectification power supply |
| CN201893723U (en) * | 2010-12-13 | 2011-07-06 | 佛山市顺德区瑞德电子实业有限公司 | Simple inverter circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000069748A (en) * | 1998-08-26 | 2000-03-03 | Matsushita Electric Works Ltd | Power supply |
| KR101265267B1 (en) * | 2007-04-24 | 2013-05-16 | 삼성전자주식회사 | High voltage power supply |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2260403Y (en) * | 1995-12-30 | 1997-08-20 | 洛阳市金兰科技开发有限公司 | High frequency contravariant high valtage power supply arrangement for electrostatic cleaner |
| CN201404859Y (en) * | 2009-04-28 | 2010-02-17 | 上海冶金矿山机械厂 | Electric precipitation high frequency pulse feed high-voltage rectification power supply |
| CN201893723U (en) * | 2010-12-13 | 2011-07-06 | 佛山市顺德区瑞德电子实业有限公司 | Simple inverter circuit |
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