CN106961229A - A kind of self adaptation washing facility numerical control supersonic driver - Google Patents
A kind of self adaptation washing facility numerical control supersonic driver Download PDFInfo
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- CN106961229A CN106961229A CN201710221589.1A CN201710221589A CN106961229A CN 106961229 A CN106961229 A CN 106961229A CN 201710221589 A CN201710221589 A CN 201710221589A CN 106961229 A CN106961229 A CN 106961229A
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- 230000006978 adaptation Effects 0.000 title claims abstract description 33
- 238000005406 washing Methods 0.000 title claims abstract description 32
- 238000001514 detection method Methods 0.000 claims abstract description 50
- 238000002955 isolation Methods 0.000 claims abstract description 34
- 239000004065 semiconductor Substances 0.000 claims description 41
- 230000005611 electricity Effects 0.000 claims description 11
- 238000001914 filtration Methods 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 230000033228 biological regulation Effects 0.000 claims description 4
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- 238000012544 monitoring process Methods 0.000 claims description 3
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- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 16
- 238000002604 ultrasonography Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 230000005622 photoelectricity Effects 0.000 description 3
- 101100190529 Arabidopsis thaliana PIN7 gene Proteins 0.000 description 2
- 108010059419 NIMA-Interacting Peptidylprolyl Isomerase Proteins 0.000 description 2
- 101100190532 Oryza sativa subsp. japonica PIN9 gene Proteins 0.000 description 2
- 102100026114 Peptidyl-prolyl cis-trans isomerase NIMA-interacting 1 Human genes 0.000 description 2
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- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 101100190527 Arabidopsis thaliana PIN5 gene Proteins 0.000 description 1
- 101100190530 Arabidopsis thaliana PIN8 gene Proteins 0.000 description 1
- 108010037490 Peptidyl-Prolyl Cis-Trans Isomerase NIMA-Interacting 4 Proteins 0.000 description 1
- 102100031653 Peptidyl-prolyl cis-trans isomerase NIMA-interacting 4 Human genes 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000004500 asepsis Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/02—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors
- H02N2/06—Drive circuits; Control arrangements or methods
- H02N2/065—Large signal circuits, e.g. final stages
- H02N2/067—Large signal circuits, e.g. final stages generating drive pulses
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Abstract
The present invention relates to a kind of self adaptation washing facility numerical control supersonic driver, including input module, it is connected with input module direct current signal is converted into the half-bridge drive circuit of high-voltage driven signal, the ultrasonic vibration system vibrated according to high-voltage driven signal, the isolation voltage detection circuit being connected with ultrasonic vibration system are connected with half-bridge drive circuit, is connected with input module current detection circuit and main control circuit；Main control circuit is connected with isolation voltage detection circuit, current detection circuit, half-bridge drive circuit respectively.The present invention substitutes original expensive pulse transformer by using half-bridge drive circuit, save cost, improve drive efficiency, isolation detection and Based Intelligent Control are carried out to output voltage simultaneously, complicated control variable is normalized to current variable, the highly reliable application of low cost is realized, application is greatly improved.
Description
Technical field
The present invention relates to art of ultrasound, driven more specifically to a kind of self adaptation washing facility numerical control supersonic
Device.
Background technology
Ultrasonic technique is widely used in industrial circle, and equipment is complicated, price is higher, installation operation is required to professional,
Civilian popularization is limited, it is increasingly serious with environmental protection pressure, it is cleaned by ultrasonic asepsis environment-protecting characteristic by many civil equipments
Favor.
The key technology of applications of ultrasound is ultrasonic drivers, is also core difficult point, its performance, cost determination it general
And degree.
In addition, all there is certain defect in prior art, such as：1) self-oscillation mode is used, is mainly become by vibration
The discrete components such as depressor, resonant capacitance, power tube are constituted, and hardware discreteness is big, performance and reliability it is difficult to ensure that；2)PWM
Although special chip modified driveability increases, it can not realize that dynamic frequency conversion broadens, drive circuit is complicated, hardware
Cost is also higher；3) resonant frequency is unable to the change of dynamic following load and changed, and frequency stability can also become with temperature, load
Change；4) power output can not online regulation and Based Intelligent Control, defencive function shortcoming, limit application.
The content of the invention
The technical problem to be solved in the present invention is that the drawbacks described above for prior art is washed there is provided a kind of self adaptation
Equipment numerical control ultrasonic drivers.
The technical solution adopted for the present invention to solve the technical problems is：Construct a kind of self adaptation washing facility numerical control ultrasound
Ripple driver, including receive input signal and input signal is converted to the input module and the input module of direct current signal
The direct current signal is converted to the half-bridge drive circuit of high-voltage driven signal, is connected basis with the half-bridge drive circuit by connection
Ultrasonic vibration system that the high-voltage driven signal is vibrated, the isolation voltage being connected with ultrasonic vibration system detection electricity
Road, the current detection circuit and main control circuit being connected with the input module；
The isolation voltage detection circuit carries out detection output isolation voltage detection to the voltage of the ultrasonic vibration system
Signal；
The current detection circuit carries out detection output electric current measure signal to input current；
The main control circuit drives with isolation voltage detection circuit, the current detection circuit, the half-bridge respectively
Dynamic circuit connection, for controlling the half-bridge drive circuit to described straight to the half-bridge drive circuit output driving control signal
The conversion of signal is flowed, while detecting the isolation electricity of circuit output according to the isolation voltage when the ultrasonic vibration system vibrates
Pressure detection signal, the current detection circuit output current detection signal output regulation signal to the half-bridge drive circuit with
Adjust the oscillation power of the ultrasonic vibration system.
In self adaptation washing facility numerical control supersonic driver of the present invention, it is preferable that the input module bag
Include：
It is connected with external circuit, receives the input signal and the EMI modules of processing are filtered to the input signal；
It is connected with the EMI modules, the input signal is carried out into rectification exports direct current signal to half-bridge driven electricity
The rectification filtering module on road.
In self adaptation washing facility numerical control supersonic driver of the present invention, it is preferable that also including being connected on
State between input module and the half-bridge drive circuit, impedance matching is carried out to the ultrasonic oscillator of the ultrasonic vibration system
Impedance matching network circuit.
In self adaptation washing facility numerical control supersonic driver of the present invention, it is preferable that also including being connected on
State between half-bridge drive circuit and the ultrasonic vibration system, make the ultrasonic vibration system real according to the high-voltage driven signal
The resonance circuit of existing resonant vibration.
In self adaptation washing facility numerical control supersonic driver of the present invention, it is preferable that also including respectively with institute
Rectification filtering module, main control circuit connection are stated, the accessory power supply of plurality of specifications voltage is provided to the main control circuit
Module.
In self adaptation washing facility numerical control supersonic driver of the present invention, it is preferable that the half-bridge driven electricity
Road includes driving IC2, resistance R54, electric capacity C5, electric capacity EC5, diode D3, resistance R5, resistance R6, electric capacity EC4, diode
D10, resistance R47, resistance R49, resistance R40, resistance R39, resistance R38, resistance R48, resistance R50, diode D9, diode
D7, diode D8, metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q2；
The first end of the driving IC2 is grounded by the electric capacity EC5, and the first end of the driving IC2 is also by described
Resistance R54 is connected to power supply, and the electric capacity C5 is connected between the resistance R54 and ground；The second end of the driving IC2 and institute
The 3rd end for stating driving IC2 is connected with the main control circuit, and the second end of the driving IC2 is also connect by the resistance R5
Ground, the 3rd end of the driving IC2 is also grounded by the resistance R6；The 4th end ground connection of the driving IC2；The driving
IC2 the 5th end is connected by the resistance R47 with the grid of the metal-oxide-semiconductor Q2, and the resistance R40 is connected on the metal-oxide-semiconductor
Between Q2 grid and ground, the resistance R49 is in parallel with the resistance R47 after being connected with the diode D10；The driving
IC2 the 6th end is connected by the node between the resistance R38 and the metal-oxide-semiconductor Q1 and the metal-oxide-semiconductor Q2, the driving
IC2 the 7th end is connected by the resistance R48 with the grid of the metal-oxide-semiconductor Q1；The 8th end of the driving IC2 passes through described
Electric capacity EC4 is connected to the 6th end；
The negative electrode of the diode D3 is connected with the 8th end of the driving IC2, the anode of the diode D3 with it is described
Electric capacity EC5 anode connection；The diode D9 is in parallel with the resistance R48 after being connected with the resistance R50；
The resistance R39 is connected between the grid of the metal-oxide-semiconductor Q1 and the driving IC2 the 6th end；The metal-oxide-semiconductor
Q1 source electrode is connected with the drain electrode of the metal-oxide-semiconductor Q2, and the drain electrode of the metal-oxide-semiconductor Q1 is connected with the input module, the metal-oxide-semiconductor
Q2 source ground, the diode D7 is connected in parallel on the drain electrode of the metal-oxide-semiconductor Q1 and the MOS after being connected with the diode D8
Between pipe Q2 source electrode.
In self adaptation washing facility numerical control supersonic driver of the present invention, it is preferable that the isolation voltage inspection
Slowdown monitoring circuit includes comparator IC1B, electric capacity C9, resistance R64, photoelectrical coupler IC5 and IC6, resistance R11, resistance R10, electric capacity
EC9, adjustable resistance R53, resistance R12, resistance R13, double diode D14, double diode D15, resistance R68 and resistance R69；
The output end of the comparator IC1B is connected with the main control circuit, the reverse input end of the comparator IC1B
It is connected with the output end of the comparator IC1B, the input in the same direction of the comparator IC1B passes through the resistance R64 and power supply
Connection；
The first end of the photoelectrical coupler IC6 is connected with the input in the same direction of the comparator IC1B, the photoelectricity coupling
Clutch IC6 the second end ground connection, the 3rd end of the photoelectrical coupler IC6 is connected with the 4th end of the photoelectrical coupler IC5,
The 4th end of the photoelectrical coupler IC6 is connected with the anode of the double diode D15；The electric capacity C9 is connected to the photoelectricity
Between coupler IC6 first end and ground；
The 3rd end of the photoelectrical coupler IC5 is connected to first end, the photoelectrical coupler by the resistance R11
IC5 the second end is connected with the first end of the resistance R10, and the second end of the resistance R10 is connected to the photoelectrical coupler
Between IC6 the 4th end and the anode of the double diode D15；
The first end of the resistance R53 is connected with the first end of the photoelectrical coupler IC5, and the 3rd of the resistance R53 the
End is connected with the negative electrode of the double diode D15；The electric capacity EC9 is connected in parallel on the first end and the photoelectricity of the resistance R53
Between coupler IC6 the 4th end and the anode of the double diode D15；The resistance R12, the resistance R13, described double two
Pole pipe D14 is in parallel with the double diode D15 successively；
The first end of the resistance R68 is connected with the internal anode of the double diode D15 and the node of negative electrode, the electricity
Resistance R68 the second end is connected with the ultrasonic vibration system；The first end of the resistance R69 is interior with the double diode D14's
The node connection of portion's anode and negative electrode, the second end of the resistance R69 is connected with the ultrasonic vibration system.
In self adaptation washing facility numerical control supersonic driver of the present invention, it is preferable that the current detecting electricity
Road includes resistance R31, resistance R32, electric capacity C12, resistance R62, resistance R9, resistance C21, comparator IC1A, resistance R36, electric capacity
EC3, electric capacity C4, resistance R33, adjustable resistance R52, resistance R63, double diode D12, electric capacity C15 and electric capacity C17；
The input in the same direction and reverse input end of the comparator IC1A passes through the resistance R31, the resistance R32 respectively
It is connected with the input module, the output end of the comparator IC1A is connected by the resistance R33 with the main control circuit；
The feeder ear of the comparator IC1A is connected by the resistance R36 with power supply；The earth terminal ground connection of the comparator IC1A；Institute
The feeder ear for stating comparator IC1A is also grounded by the electric capacity C4, and the electric capacity EC3 is connected in parallel with the electric capacity C4；
The electric capacity C12 is connected in parallel between the input in the same direction of the comparator IC1A and reverse input end；The resistance
R62 is connected in parallel on after being connected with the resistance R9 between the reverse input end of the comparator IC1A and output end；The electric capacity C21
It is connected in parallel with the resistance R9；
The first end of the adjustable resistance R52 is connected with the second end of the resistance R33, and the of the adjustable resistance R52
Three ends are grounded by the resistance R63；The negative electrode of the double diode D12 is connected with power supply, the inside of the double diode D12
The node of anode and negative electrode is connected with the second end of the resistance R33, the plus earth of the double diode D12；The electric capacity
C15 first end is connected between the second end of the resistance R33 and the main control circuit, the second end of the electric capacity C15
Ground connection；The electric capacity C17 is connected in parallel with the electric capacity C15.
In self adaptation washing facility numerical control supersonic driver of the present invention, it is preferable that the main control circuit
Including microprocessor.
In self adaptation washing facility numerical control supersonic driver of the present invention, it is preferable that the resonance circuit bag
Resonant inductance is included, the resonant inductance is power resonance inductance.
Implement the self adaptation washing facility numerical control supersonic driver of the present invention, have the advantages that：The present invention is logical
Cross and original expensive pulse transformer is substituted using half-bridge drive circuit, save cost, improve drive efficiency, while to defeated
Go out voltage and carry out isolation detection and Based Intelligent Control, complicated control variable is normalized to current variable, realize that inexpensive height can
The application leaned on, greatly improves application.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is the functional block diagram of self adaptation washing facility numerical control supersonic driver of the present invention；
Fig. 2 is the circuit theory diagrams of the embodiment of half-bridge drive circuit one of the present invention；
Fig. 3 is the circuit theory diagrams that isolation voltage of the present invention detects the embodiment of circuit one；
Fig. 4 is the circuit theory diagrams of the embodiment of current detection circuit one of the present invention；
Fig. 5 is the circuit theory diagrams of the embodiment of main control circuit one of the present invention；
Fig. 6 is the circuit theory diagrams of the embodiment of impedance matching network module one of the present invention；
Fig. 7 is the circuit theory diagrams of the embodiment of accessory power supply one of the present invention；
Fig. 8 is the circuit theory diagrams of the embodiment of resonance circuit one of the present invention；
Fig. 9 is the measuring circuit linear graph of self adaptation washing facility numerical control supersonic driver of the present invention；
Figure 10 is prior art common survey circuit linearity figure.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Implementation in the present invention you, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Referring to Fig. 1, Fig. 1 is the functional block diagram of self adaptation washing facility numerical control supersonic driver of the present invention.Such as Fig. 1 institutes
Show, self adaptation washing facility numerical control supersonic driver of the invention include input module 101, protection matching network module 20,
Half-bridge drive circuit 30, resonance circuit 40, ultrasonic vibration system 50, main control circuit 60, isolation voltage detection circuit 70, electric current
Detect circuit 80 and auxiliary power module 90.Specifically：
Input module 10, is mainly used in receiving input signal and input signal is converted into direct current signal.Input module 10
Including EMI modules 101 and rectification filtering module 102.Wherein, EMI modules 101 are connected with external circuit, for receiving alternating current
Press and processing is filtered to alternating voltage.Because circuit can be disturbed by power network in the course of the work, while can also produce
The electrical noise of power network is disturbed, therefore filter circuit is accessed in power input, two-way electrical noise isolation can be played a part of.It is whole
Stream filtration module 102 is connected with EMI modules 101, and rectification is carried out to the input signal that processing is filtered through EMI modules 101, will
The industrial-frequency alternating current that power network is provided is converted to direct current (input signal is converted into direct current signal).
Impedance matching network module 20, is connected between rectification filtering module 102 and half-bridge drive circuit 30, is mainly used in
Impedance matching is carried out to the ultrasonic oscillator of ultrasonic vibration system 50.Due to ultrasonic oscillator be nonlinear device, it is necessary to using
Transformer carries out it impedance matching, could complete power transmission.
Referring to Fig. 6, Fig. 6 is the circuit theory diagrams of the specific embodiment of impedance matching network module 20 1 of the present invention.Such as Fig. 6 institutes
Show, impedance matching network module 20 includes electric capacity EC1, electric capacity EC2, electric capacity CF1, electric capacity CF2, resistance R26, transformer T1A, electricity
Hold CF3, resistance R27, resistance R28, resistance R29 and resistance R30.Electric capacity EC1 and electric capacity EC2 be sequentially connected in series high pressure HV with
High pressure between G_HV, and electric capacity EC1 anode is connected with rectification filtering module 102, electric capacity EC2 negative terminal and rectifying and wave-filtering mould
Block 102 is connected；Transformer T1A the second end is connected by the node between electric capacity CF1 and electric capacity EC1 and electric capacity EC2, transformer
T1A first end is connected with half-bridge drive circuit 30；Electric capacity CF2 is in parallel with transformer T1A after being connected with resistance R26；Electric capacity CF3
First end be connected with high pressure HV, electric capacity CF3 the second end and high pressure G_HV be connected；Resistance R27 is connected on the of electric capacity CF3
Two ends and high pressure between G_HV, resistance R30, resistance R29, resistance R28 are in parallel with resistance R27 successively.
Half-bridge drive circuit 30, is connected with impedance matching network module 20, resonance circuit 40, main control circuit 60 respectively,
It is mainly used in the direct current signal that input module 10 is exported being converted to high-voltage driven signal.In the present embodiment, input module 10
The direct current signal of output is transmitted to half-bridge drive circuit 30 again after can also carrying out impedance matching by impedance matching network module 20,
Half-bridge drive circuit 30 carries out direct current signal to be converted to high-voltage driven signal again.In other words, half-bridge drive circuit 30 can
The direct current signal of low pressure is converted to the high-voltage driven signal needed for high-voltage bridge arms, so be realized with a low cost low-voltage signal with
The connection of high-pressure system.Because the half-bridge drive circuit 30 of the present embodiment is the half-bridge drive circuit of optimization, it possesses high-performance,
By the half-bridge drive circuit 30 to substitute original expensive pulse transformer and peripheral circuit, greatly save device into
This, and effectively increase the drive efficiency of ultrasonic drive.
Referring to Fig. 2, Fig. 2 is the circuit theory diagrams of the specific embodiment of half-bridge drive circuit one of the present invention.In this embodiment,
Half-bridge drive circuit includes driving IC2, resistance R54, electric capacity C5, electric capacity EC5, diode D3, resistance R5, resistance R6, electric capacity
EC4, diode D10, resistance R47, resistance R49, resistance R40, resistance R39, resistance R38, resistance R48, resistance R50, diode
D9, diode D7, diode D8, metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q2.
Driving IC2 first end is grounded by electric capacity EC5, and driving IC2 first end is also connected to power supply by resistance R54
(as shown in Fig. 2 the supply voltage of access is 15V), electric capacity C5 is connected between resistance R54 and ground；Drive IC2 the second end and
Driving IC2 the 3rd end is connected with main control circuit 60, and driving IC2 the second end is also grounded by resistance R5, drives the of IC2
Three ends are also grounded by resistance R6；Drive IC2 the 4th end ground connection；Driving IC2 the 5th end passes through resistance R47 and metal-oxide-semiconductor Q2
Grid connection, resistance R40 is connected between metal-oxide-semiconductor Q2 grid and ground, resistance R49 connected with diode D10 after with resistance
R47 is in parallel；IC2 the 6th end is driven to be connected by the node between resistance R38 and metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q2, driving IC2's
7th end is connected by resistance R48 with metal-oxide-semiconductor Q1 grid；Driving IC2 the 8th end is connected to the 6th end by electric capacity EC4.
Diode D3 negative electrode is connected with driving IC2 the 8th end, and diode D3 anode connects with electric capacity EC5 anode
Connect；Diode D9 is in parallel with resistance R48 after being connected with resistance R50.
Resistance R39 is connected between metal-oxide-semiconductor Q1 grid and the 6th end for driving IC2；Metal-oxide-semiconductor Q1 source electrode and metal-oxide-semiconductor
Q2 drain electrode connection, metal-oxide-semiconductor Q1 drain electrode is connected with input module 10 (the high pressure HV i.e. shown in Fig. 6), metal-oxide-semiconductor Q2 source electrode
Ground connection, diode D7 is connected in parallel on after being connected with diode D8 between metal-oxide-semiconductor Q1 drain electrode and metal-oxide-semiconductor Q2 source electrode；Diode D7
First end of the node also with transformer T1A between diode D8 is connected.
Resonance circuit 40, is connected between half-bridge drive circuit 30 and ultrasonic vibration system 50, is mainly used in making ultrasound shake
The high-voltage driven signal that dynamic system 50 is exported according to half-bridge drive circuit 30 realizes resonant vibration.Preferably, resonance circuit 40 is wrapped
Resonant inductance is included, and resonant inductance can be power resonance inductance.As shown in figure 8, being embodied for resonance circuit one of the present invention
The circuit theory diagrams of example, resonance circuit 40 may include resonant inductance L3A, transformer T1B, resonant inductance L3A first end and change
Depressor T1B the 4th end connection, resonant inductance L3A the second end and the positive input terminal (V_SONIC_B) of ultrasonic vibration system 50
Connection, transformer T1B the 3rd end is connected with the negative input end (V_SONIC_A) of ultrasonic vibration system 50.It is to be appreciated that by
It is capacitive device in ultrasonic oscillator, therefore, by setting resonant inductance ultrasonic oscillator can be made to realize in the present embodiment
Resonance.
Ultrasonic vibration system 50, is connected with resonance circuit 40, encourages ultrasonic wave to shake according to the resonance effect of resonance circuit 40
Son vibration, exports corresponding ultrasonic signal.
Main control circuit 60, connects with isolation voltage detection circuit 70, current detection circuit 80, half-bridge drive circuit 30 respectively
Connect, be mainly used in controlling 30 pairs of half-bridge drive circuit straight to the output driving control signal of half-bridge drive circuit 30 upon power-up of the system
The conversion of signal is flowed, while when ultrasonic vibration system 50 vibrates, the isolation voltage that circuit 70 is exported is detected according to isolation voltage
Signal, the current detection signal output regulation signal of the output of current detection circuit 80 are detected to half-bridge drive circuit to adjust ultrasound
The oscillation power of vibrational system 50.
Preferably, main control circuit 60 may include microprocessor.After system electrification, the exportable burst pulse of microprocessor
Differential driving signal carries out conversion process to half-bridge drive circuit 30, by half-bridge drive circuit 30 and carried to ultrasonic vibration system 50
For high-frequency and high-voltage square wave, this square wave by resonant inductance excitation ultrasonic oscillator vibration, by isolation voltage detect circuit 70 with
Current detection circuit 80 feeds back to microprocessor, and microprocessor detects that signal and current detection signal adjust defeated by isolation voltage
Go out frequency, synchronous detection voltage and current signal, find the current resonance point of maximum, that is, find the machinery of ultrasonic vibration system 50
Maximum resonance point is vibrated, and then completes frequency sweep.When needing to adjust the power of ultrasonic activation, then differential signal need to be only adjusted
Pulse width, and then the conversion carried out again by half-bridge drive circuit 30.
It is to be appreciated that the microprocessor differential driving signal of the embodiment can be PWM or PFM drive signals, by making
Original PWM special chips are substituted with the microprocessor of the present embodiment, and software is realized by the BKIN pin functions of microprocessor
Cycle by Cycle overcurrent protection, intactly realize the function of power source special chip, reduce cost, be that software realizes Based Intelligent Control
There is provided guarantee.
In addition, the present invention by the current detection signal to current detection circuit 80 is fed back (i.e. by ultrasonic vibration system
50 current effective value is used as feedback quantity), the frequency to ultrasonic vibration system 50 is adjusted, and the resonance point for realizing system is chased after
Track is controlled with amplitude constant, and complicated control variable is normalized to current variable, realizes the highly reliable application of low cost.
It is core that the main control circuit 60 of the present invention, which employs low cost, high-performance MCU, configures some peripheral circuits, very
The deficiencies in the prior art are solved well, and design cost is cheap, power expansion simple, preferably solves power ultrasonic and exists
The popularization and popularization of civil area.
Referring to Fig. 5, Fig. 5 is the circuit theory diagrams of the specific embodiment of main control circuit one of the present invention.As shown in figure 5, master control
Circuit 60 processed may include microprocessor IC9, resistance R78, resistance R77, resistance R76, resistance R77, electric capacity C27, resistance C26, electricity
Hold EC11, electric capacity C28 and electric capacity C29.
Microprocessor IC9 PIN1 pin are connected with power supply by resistance R77, resistance R76 and (connect 5V voltages), microprocessor
IC9 PIN1 pin are also grounded by resistance R77, electric capacity C18；Microprocessor IC9 PIN4 pin ground connection；Microprocessor IC9's
PIN5 pin are grounded by electric capacity C27, and microprocessor IC9 PIN7 pin are connected with power supply and (connect 5V voltages), microprocessor IC9's
PIN7 pin are also grounded by electric capacity C26, and electric capacity EC11 is in parallel with electric capacity C26；Microprocessor IC9 PIN9 pin pass through electric capacity C29
Ground connection, microprocessor IC9 PIN9 pin connect 5V power supplys；Electric capacity C8 is in parallel with electric capacity C29；Microprocessor IC9 PIN12 pin with every
Ionization voltage detection circuit 70 is connected, and microprocessor IC9 PIN11 pin are connected with current detection circuit 80.
Isolation voltage detects circuit 70, is connected respectively with main control circuit 60, ultrasonic vibration system 50, for being shaken to ultrasound
The voltage of dynamic system 50 carries out detection output isolation voltage and detects signal to main control circuit 60.It is to be appreciated that passing through isolation
Voltage detecting circuit 70 can realize the real-time monitoring to the voltage of ultrasonic vibration system 50.
Further, isolation voltage of the invention detection circuit 70 can realize V_P_P 1500V high-frequency and high-voltage exchange
Linear isolation is sampled.Preferably, common nonlinear optical electric coupler conduct can be used in isolation voltage of the invention detection circuit 70
Isolating device, reliability is higher, voltage detecting is more stable.
Referring to Fig. 3, Fig. 3 is the circuit theory diagrams that isolation voltage of the present invention detects the specific embodiment of circuit one.Such as Fig. 3 institutes
Show, the isolation voltage detection circuit 70 of the embodiment may include：Comparator IC1B, electric capacity C9, resistance R64, photoelectrical coupler IC5
With IC6, resistance R11, resistance R10, electric capacity EC9, adjustable resistance R53, resistance R12, resistance R13, double diode D14, double two poles
Pipe D15, resistance R68 and resistance R69.
Comparator IC1B output end is connected with main control circuit 60 (microprocessor IC9 PIN12 pin), comparator IC1B
Reverse input end be connected with comparator IC1B output end, comparator IC1B input in the same direction passes through resistance R64 and power supply
Connection.
Photoelectrical coupler IC6 first end is connected with comparator IC1B input in the same direction, and the second of photoelectrical coupler IC6
End ground connection, the 3rd end of photoelectrical coupler is connected with photoelectrical coupler IC5 the 4th end, photoelectrical coupler IC6 the 4th end and
Double diode D15 anode connection；Electric capacity C9 is connected between photoelectrical coupler IC6 first end and ground.
Photoelectrical coupler IC5 the 3rd end is connected to first end by resistance R11, photoelectrical coupler IC5 the second end with
Resistance R10 first end connection, resistance R10 the second end is connected to photoelectrical coupler IC6 the 4th end with double diode D15's
Between anode.
Resistance R53 first end is connected with photoelectrical coupler IC5 first end, resistance R53 the 3rd end and double diode
D15 negative electrode connection；Electric capacity EC9 is connected in parallel on resistance R53 first end and photoelectrical coupler IC6 the 4th end and double diode
Between D15 anode；Resistance R12, resistance R13, double diode D14 are in parallel with double diode D15 successively.
Resistance R68 first end is connected with double diode D15 internal anode and the node of negative electrode, and the second of resistance R68
End is connected with ultrasonic vibration system 50 (i.e. the positive input terminal V_SONIC_B of ultrasonic vibration system 50)；Resistance R69 first end with
Double diode D14 internal anode and the node of negative electrode are connected, and resistance R69 the second end and ultrasonic vibration system 50 are (i.e. ultrasonic
The negative input end V_SONIC_A of vibrational system 50) connection.
Current detection circuit 80, is connected with impedance matching network module 30, main control circuit 60 respectively, and mainly input is believed
Number energy currents detect and handle accordingly output electric current measure signal to main control circuit 60, to feed back ultrasonic vibration
The energy currents of system.It is to be appreciated that because ultrasonic vibration system 50 is frequency conversion system, its curent change is larger, therefore, this
Embodiment carries out detection by the energy currents to input the electric current for being equivalent to output end (ultrasonic vibration system 50), and then
It can more accurate, more stably feed back the current signal of ultrasonic vibration system 50.
Referring to Fig. 4, Fig. 4 is the circuit theory diagrams of the specific embodiment of current detection circuit one of the present invention.In this embodiment,
Current detection circuit 80 may include：Resistance R31, resistance R32, electric capacity C12, resistance R62, resistance R9, resistance C21, comparator
IC1A, resistance R36, electric capacity EC3, electric capacity C4, resistance R33, adjustable resistance R52, resistance R63, double diode D12, electric capacity C15,
And electric capacity C17.
Comparator IC1A input in the same direction and reverse input end passes through resistance R31, resistance R32 and input module 10 respectively
(i.e. comparator IC1A input in the same direction is connected by resistance R31 with resistance R27 the second end, and comparator IC1A's is reverse defeated
Enter end to be connected with resistance R27 first end by resistance R32) connect, comparator IC1A output end passes through resistance R33 and master control
Circuit connection processed；Comparator IC1A feeder ear is connected by resistance R36 with power supply；Comparator IC1A earth terminal ground connection；Than
Feeder ear compared with device IC1A is also grounded by electric capacity C4, and electric capacity EC3 is connected in parallel with electric capacity C4.
Electric capacity C12 is connected in parallel between comparator IC1A input in the same direction and reverse input end；Resistance R62 and resistance R9 goes here and there
It is connected in parallel on after connection between comparator IC1A reverse input end and output end；Electric capacity C21 is connected in parallel with resistance R9.
Adjustable resistance R52 first end is connected with resistance R33 the second end, and adjustable resistance R52 the 3rd end passes through resistance
R63 is grounded；Double diode D12 negative electrode is connected with power supply (connecing 5V voltages), double diode D12 internal anode and the section of negative electrode
Point is connected with resistance R33 the second end, double diode D12 plus earth；Electric capacity C15 first end is connected to resistance R33's
Between second end and main control circuit 60, electric capacity C15 the second end ground connection；Electric capacity C17 is connected in parallel with electric capacity C15.
Auxiliary power module 90, is connected with rectification filtering module 102, main control circuit 60 respectively, mainly to main control
Circuit provides plurality of specifications voltage, i.e., can provide the voltage of plurality of specifications for driver by auxiliary power module 90, can meet
The power demands of different circuits.Referring to Fig. 7, Fig. 7 is the circuit theory diagrams of the specific embodiment of accessory power supply one of the present invention, specifically
Circuit structure is as shown in fig. 7, will not be repeated here.
Referring to Fig. 9 and Figure 10, Fig. 9 is that the measuring circuit of self adaptation washing facility numerical control supersonic driver of the present invention is linear
Figure；Figure 10 is prior art common survey circuit linearity figure.It can be seen from Fig. 9 and Figure 10 contrast, self adaptation of the invention is washed
The circuit linearity degree for washing equipment numerical control ultrasonic drive is good more than existing circuit linearity degree.
To sum up, self adaptation washing facility numerical control supersonic drive performance of the invention stabilization, reliability are high, can be complexity
Control variable be normalized to current variable, using the virtual value of electric current as feedback quantity to adjust the frequency of ultrasonic vibration system,
The resonance point tracking of feasible system is controlled with amplitude constant, and power bracket can be realized from tens watts to several hectowatts, facilitated super
The upgrading of acoustic vibration system, and without senior engineer again；Low cost, drive efficiency are high.
Above example only technical concept and feature to illustrate the invention, its object is to allow person skilled in the art
Scholar can understand present disclosure and implement accordingly, can not limit the scope of the invention.It is all to be wanted with right of the present invention
Impartial change and modification that scope is done are asked, the covering scope of the claims in the present invention all should be belonged to.
It should be appreciated that for those of ordinary skills, can according to the above description be improved or converted,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (10)
1. a kind of self adaptation washing facility numerical control supersonic driver, it is characterised in that including receiving input signal and will input
Signal is converted to the input module of direct current signal, be connected with the input module direct current signal being converted to high drive letter
Number half-bridge drive circuit, with the half-bridge drive circuit be connected the ultrasonic vibration vibrated according to the high-voltage driven signal
System, the isolation voltage being connected with ultrasonic vibration system detection circuit, the current detecting electricity being connected with the input module
Road and main control circuit；
The isolation voltage detection circuit carries out detection output isolation voltage detection signal to the voltage of the ultrasonic vibration system；
The current detection circuit carries out detection output electric current measure signal to input current；
The main control circuit is electric with isolation voltage detection circuit, the current detection circuit, the half-bridge driven respectively
Road is connected, for controlling the half-bridge drive circuit to believe the direct current to the half-bridge drive circuit output driving control signal
Number conversion, while when the ultrasonic vibration system vibrates according to the isolation voltage detect circuit output isolation voltage examine
Signal, the current detection signal output regulation signal of current detection circuit output are surveyed to the half-bridge drive circuit to adjust
The oscillation power of the ultrasonic vibration system.
2. self adaptation washing facility numerical control supersonic driver according to claim 1, it is characterised in that the input mould
Block includes：
It is connected with external circuit, receives the input signal and the EMI modules of processing are filtered to the input signal；
It is connected with the EMI modules, the input signal is carried out into rectification exports direct current signal to the half-bridge drive circuit
Rectification filtering module.
3. self adaptation washing facility numerical control supersonic driver according to claim 1, it is characterised in that also including series connection
Between the input module and the half-bridge drive circuit, impedance is carried out to the ultrasonic oscillator of the ultrasonic vibration system
The impedance matching network circuit matched somebody with somebody.
4. self adaptation washing facility numerical control supersonic driver according to claim 1, it is characterised in that also including series connection
Between the half-bridge drive circuit and the ultrasonic vibration system, the ultrasonic vibration system is set to be believed according to the high drive
Number realize the resonance circuit of resonant vibration.
5. self adaptation washing facility numerical control supersonic driver according to claim 2, it is characterised in that also including respectively
It is connected with the rectification filtering module, the main control circuit, the auxiliary of plurality of specifications voltage is provided to the main control circuit
Power module.
6. self adaptation washing facility numerical control supersonic driver according to claim 1, it is characterised in that the half-bridge drives
Dynamic circuit includes driving IC2, resistance R54, electric capacity C5, electric capacity EC5, diode D3, resistance R5, resistance R6, electric capacity EC4, two poles
Pipe D10, resistance R47, resistance R49, resistance R40, resistance R39, resistance R38, resistance R48, resistance R50, diode D9, diode
D7, diode D8, metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q2；
The first end of the driving IC2 is grounded by the electric capacity EC5, and the first end of the driving IC2 also passes through the resistance
R54 is connected to power supply, and the electric capacity C5 is connected between the resistance R54 and ground；The second end of the driving IC2 and the drive
Dynamic IC2 the 3rd end is connected with the main control circuit, and the second end of the driving IC2 is also grounded by the resistance R5, institute
The 3rd end for stating driving IC2 is also grounded by the resistance R6；The 4th end ground connection of the driving IC2；The of the driving IC2
Five ends are connected by the resistance R47 with the grid of the metal-oxide-semiconductor Q2, and the resistance R40 is connected on the grid of the metal-oxide-semiconductor Q2
Between ground, the resistance R49 is in parallel with the resistance R47 after being connected with the diode D10；The 6th of the driving IC2
End is connected by the node between the resistance R38 and the metal-oxide-semiconductor Q1 and the metal-oxide-semiconductor Q2, the 7th end of the driving IC2
It is connected by the resistance R48 with the grid of the metal-oxide-semiconductor Q1；The 8th end of the driving IC2 passes through the electric capacity EC4 connections
To the 6th end；
The negative electrode of the diode D3 is connected with the 8th end of the driving IC2, anode and the electric capacity of the diode D3
EC5 anode connection；The diode D9 is in parallel with the resistance R48 after being connected with the resistance R50；
The resistance R39 is connected between the grid of the metal-oxide-semiconductor Q1 and the driving IC2 the 6th end；The metal-oxide-semiconductor Q1's
Source electrode is connected with the drain electrode of the metal-oxide-semiconductor Q2, and the drain electrode of the metal-oxide-semiconductor Q1 is connected with the input module, the metal-oxide-semiconductor Q2's
Source ground, the diode D7 is connected in parallel on the drain electrode of the metal-oxide-semiconductor Q1 and the metal-oxide-semiconductor Q2 after being connected with the diode D8
Source electrode between.
7. self adaptation washing facility numerical control supersonic driver according to claim 1, it is characterised in that the isolation electricity
Pressure detection circuit includes comparator IC1B, electric capacity C9, resistance R64, photoelectrical coupler IC5 and IC6, resistance R11, resistance R10, electricity
Hold EC9, adjustable resistance R53, resistance R12, resistance R13, double diode D14, double diode D15, resistance R68 and resistance
R69；
The output end of the comparator IC1B is connected with the main control circuit, the reverse input end of the comparator IC1B and institute
Comparator IC1B output end connection, the input in the same direction of the comparator IC1B is stated to be connected with power supply by the resistance R64；
The first end of the photoelectrical coupler IC6 is connected with the input in the same direction of the comparator IC1B, the photoelectrical coupler
IC6 the second end ground connection, the 3rd end of the photoelectrical coupler is connected with the 4th end of the photoelectrical coupler IC5, the light
Electric coupler IC6 the 4th end is connected with the anode of the double diode D15；The electric capacity C9 is connected to the photoelectrical coupler
Between IC6 first end and ground；
The 3rd end of the photoelectrical coupler IC5 is connected to first end by the resistance R11, the photoelectrical coupler IC5's
Second end is connected with the first end of the resistance R10, and the second end of the resistance R10 is connected to the photoelectrical coupler IC6's
Between 4th end and the double diode D15 anode；
The first end of the resistance R53 is connected with the first end of the photoelectrical coupler IC5, the 3rd end of the resistance R53 with
The negative electrode connection of the double diode D15；The electric capacity EC9 is connected in parallel on the first end and the photoelectric coupling of the resistance R53
Between device IC6 the 4th end and the anode of the double diode D15；The resistance R12, the resistance R13, the double diode
D14 is in parallel with the double diode D15 successively；
The first end of the resistance R68 is connected with the internal anode of the double diode D15 and the node of negative electrode, the resistance
R68 the second end is connected with the ultrasonic vibration system；The first end of the resistance R69 and the inside of the double diode D14
The node connection of anode and negative electrode, the second end of the resistance R69 is connected with the ultrasonic vibration system.
8. self adaptation washing facility numerical control supersonic driver according to claim 1, it is characterised in that the electric current inspection
Slowdown monitoring circuit include resistance R31, resistance R32, electric capacity C12, resistance R62, resistance R9, resistance C21, comparator IC1A, resistance R36,
Electric capacity EC3, electric capacity C4, resistance R33, adjustable resistance R52, resistance R63, double diode D12, electric capacity C15 and electric capacity C17；
The input in the same direction and reverse input end of the comparator IC1A passes through the resistance R31, the resistance R32 and institute respectively
Input module connection is stated, the output end of the comparator IC1A is connected by the resistance R33 with the main control circuit；It is described
Comparator IC1A feeder ear is connected by the resistance R36 with power supply；The earth terminal ground connection of the comparator IC1A；The ratio
Feeder ear compared with device IC1A is also grounded by the electric capacity C4, and the electric capacity EC3 is connected in parallel with the electric capacity C4；
The electric capacity C12 is connected in parallel between the input in the same direction of the comparator IC1A and reverse input end；The resistance R62 with
It is connected in parallel on after the resistance R9 series connection between the reverse input end of the comparator IC1A and output end；The electric capacity C21 and institute
Resistance R9 is stated to be connected in parallel；
The first end of the adjustable resistance R52 is connected with the second end of the resistance R33, the 3rd end of the adjustable resistance R52
It is grounded by the resistance R63；The negative electrode of the double diode D12 is connected with power supply, the internal anode of the double diode D12
It is connected with the node of negative electrode with the second end of the resistance R33, the plus earth of the double diode D12；The electric capacity C15's
First end is connected between the second end of the resistance R33 and the main control circuit, the second end ground connection of the electric capacity C15；
The electric capacity C17 is connected in parallel with the electric capacity C15.
9. self adaptation washing facility numerical control supersonic driver according to claim 1, it is characterised in that the main control
Circuit includes microprocessor.
10. self adaptation washing facility numerical control supersonic driver according to claim 4, it is characterised in that the resonance
Circuit includes resonant inductance, and the resonant inductance is power resonance inductance.
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