CN204425320U - Multiple-frequency supersonic ripple power supply - Google Patents
Multiple-frequency supersonic ripple power supply Download PDFInfo
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Abstract
The utility model relates to a kind of multiple-frequency supersonic ripple power supply, it is characterized in that: it comprises signal and occurs and power amplification unit, frequency-tracking unit and control unit; The control signal that signal occurs and power amplification unit is used for exporting according to control unit exports two-way ultrasonic signal, and to drive the work of multifrequency transducer after carrying out signal filtering, power amplification; Frequency-tracking unit occurs according to signal and the output of power amplification unit carries out frequency sweep and phase-locked to multifrequency transducer, and by the signal feedback in frequency sweep and phase locking process to control unit; The feedback signal adjustment control signal generation of control unit according to frequency-tracking unit and the output frequency of power amplification unit.The utility model feature richness, operating efficiency are high, applied widely, control is convenient, stable performance, and therefore the utility model can be widely used in power ultrasonic application of power field.
Description
Technical field
The utility model relates to a kind of power supply, particularly about a kind of multiple-frequency supersonic ripple power supply.
Background technology
Ultrasonic wave is a kind of frequency higher than the sound wave of 20000 hertz, and its good directionality, penetration capacity is strong, is easy to obtain the acoustic energy comparatively concentrated.In recent years, along with the development of science and technology and deepening continuously to ultrasonic wave research, ultrasonic technology is widely used in various fields.Ultrasonic wave " cavitation ", as a kind of physical effect of ul-trasonic irradiation when the liquid, is widely used in the fields such as Ultrasonic Cleaning, ultrasonic wave extraction, ultrasonic therapy.
" cavitation " causes the dominant mechanism of multiple physics, chemistry and biological effect.Show the theoretical research of ultrasonic wave " cavitation ", multiple-frequency supersonic ripple produces the characteristic of low frequency by difference frequency in double frequency, improves acoustic field uniformity, and eliminate standing wave, comparatively single-frequency ultrasonic wave significantly can strengthen " cavitation " effect.And the phase difference wherein between multiple-frequency supersonic wave frequency, power and two paths of signals is the important parameter of impact " cavitation " effect.The operating efficiency of multiple-frequency supersonic ripple raising in fields such as Ultrasonic Cleaning, ultrasonic wave extraction, ultrasonic therapies with characteristic frequency, power and phase difference can be utilized.
Ultrasonic power is one of core component of ultrasonic device, and its effect sends ultrasonic signal to drive transducer to produce ultrasonic vibration.In current ultrasonic device, general employing single-frequency ultrasonic power, namely can only export a kind of ultrasonic signal of frequency at synchronization.This ultrasonic power only has a road, signal generation and power amplification unit and frequency-tracking unit, therefore can only drive the work of single-frequency transducer, can not realize driving the double frequency of multifrequency transducer simultaneously.
Patent CN102350409A proposes a kind of multifrequency simultaneously ultrasonic generator of drive-type and its implementation, and this patent ultrasonic power comprises the drive circuit of the identical ultrasonic generation circuit of two line structures and the work of a set of driving multifrequency transducer.Drive circuit carries out synthesis by a digital signal synthesizer to two-way ultrasonic signal and processes, after drive the work of multifrequency transducer through power amplification.Signal feedback circuit utilizes different band pass filters from composite signal, extract the hyperacoustic voltage of two-way, current feedback signal respectively, and is adjusted the frequency of each output signal and amplitude by control unit.Separate between the two-way ultrasonic signal that this ultrasonic power exports, not by driving multifrequency transducer to be operated in optimum state to the corrdinated adjustment of two-way ultrasonic frequency, power, phase difference; In signal feedback circuit, due to the restriction of band pass filter centre frequency and bandwidth, the sampling of voltage, current signal need design different band pass filters for different operating frequency range, being used for driving the composite signal of transducer work to process, having certain limitation to the operating frequency range of ultrasonic power and frequency-tracking performance; This ultrasonic power operationally need be controlled each functional module by control unit output multi-channel parameter respectively, control strategy more complicated.
Summary of the invention
For the problems referred to above, the purpose of this utility model is to provide one can export two-way ultrasonic signal simultaneously, and the hyperacoustic frequency of two-way, power and phase difference all can the multiple-frequency supersonic ripple power supplys of controlling and adjustment.
For achieving the above object, the utility model takes following technical scheme: a kind of multiple-frequency supersonic ripple power supply, is characterized in that: it comprises signal and occurs and power amplification unit, frequency-tracking unit and control unit; The control signal that described signal occurs and power amplification unit is used for exporting according to described control unit exports two-way ultrasonic signal simultaneously, and to drive the work of multifrequency transducer after carrying out signal filtering, power amplification; Described frequency-tracking unit occurs according to described signal and the output of power amplification unit carries out frequency sweep and phase-locked to multifrequency transducer, and gives described control unit by the signal feedback in frequency sweep and phase locking process; Described control unit adjusts the output frequency of the generation of described control signal and power amplification unit according to the feedback signal of described frequency-tracking unit.
The two-way that described signal occurs and power amplification unit is divided into structure identical, each road includes the ultrasonic wave generation module that an input connects described control unit, connection signal filter, power amplifier driver module, power amplifier and the multifrequency transducer successively of the output of ultrasonic wave generation module described in each; Described ultrasonic wave generation module produces corresponding frequencies, duty ratio according to the control signal that described control unit sends and has the ultrasonic signal of initial phase, and successively through described traffic filter filtering, filtered signal triggers the work of described power amplifier driver module, described power amplifier driver module provides driving-energy for described power amplifier, with the amplification driving described power amplifier to carry out signal, the signal after amplification drives the work of multifrequency transducer.
Described frequency-tracking unit comprises two current signal collection modules, two voltage signal acquisition modules, four traffic filters, an analog multichannel switch, a phase relation judge module, one first A/D converter, two phase place difference signal extraction module and two second A/D converters, the output of power amplifier described in each is corresponding separately connects voltage signal acquisition module described in current signal collection module and described in, and current signal collection module described in each is connected traffic filter described in the output of described voltage signal acquisition module is all corresponding, described in each, the output of traffic filter is divided into two-way: a road connects the input of described analog multichannel switch, the output of described analog multichannel switch connects described phase relation judge module and described first A/D converter respectively, and described phase relation judge module is connected described control unit respectively with the output of described first A/D converter, another road connects described phase signal extraction module, described second A/D converter and described control unit successively, current signal collection module described in each and described voltage signal acquisition module send the electric current of the two-way ultrasonic signal collected and voltage signal to corresponding described traffic filter and carry out filtering, then described analog multichannel switch is sent to, described control unit sends sampled signal switch-over control signal to described analog multichannel switch, gating is by one group of electric current of described analog multichannel switch and voltage signal, and send the electric current of output and voltage signal to described phase relation judge module, the phase relation of both real-time judge, and send the feedback signal of this phase relation of reflection to described control unit, occur and the adding frequently or subtract frequently of power amplification unit output frequency to be realized signal by described control unit, send the current signal of output to described first A/D converter, described control unit is transferred to after conversion, described control unit is according to the current value of real-time reception and frequency corresponding when judging feedback signal fast search lowest high-current value in conjunction with described phase relation judge module, to form the frequency sweep function of described frequency-tracking unit, and the two-way resonance frequency of multifrequency transducer is obtained respectively by frequency sweep function, described control unit signal according to this FREQUENCY CONTROL occurs and power amplification unit exports corresponding resonance frequency, multifrequency transducer is made to be operated in resonance condition, phase signal extraction module described in two-way extracts phase difference between each self-corresponding electric current of two-way ultrasonic signal and voltage, and feed back to described control unit respectively converted thereof into the digital quantity of reflection electric current and voltage phase difference information by described second A/D converter after, be operated in resonance condition to keep multifrequency transducer, when between the voltage and electric current on any road, the digital quantity of phase signal exceeds the threshold range that described control unit sets, the off resonance of multifrequency transducer, described frequency-tracking unit reenters frequency sweep state.
Described current signal collection module adopts current transformer.
Described voltage signal acquisition module adopts voltage transformer.
Described phase relation judge module adopts d type flip flop.
Described phase signal extraction module adopts digital phase discriminator.
Described control unit comprises described control chip, communication module, button and display screen; Described control chip is electrically connected described communication module, described button and described display screen respectively; For control described signal occur and the frequency of power amplification unit, phase difference and power initial parameter by the described communication module that receives from host computer or by described button key in both one of mode send described control chip to; Described control chip carries out according to the control signal received the output frequency controlling the generation of described signal and power amplification unit, and adjust described signal according to the feedback signal of described frequency-tracking unit and occur and the output frequency of power amplification unit, and at the parameter information of described display screen display current operating state and two-way ultrasonic signal.
The utility model is owing to taking above technical scheme, it has the following advantages: 1, the utility model sends two-way ultrasonic signal owing to adopting the generation of same control chip control signal and power amplification unit simultaneously, realize the frequency of two-way ultrasonic signal, power and between the controlling and adjustment of phase difference, therefore control strategy is simple, convenient." cavitation " that adopt the utility model to drive the work of multifrequency transducer to take full advantage of multiple-frequency supersonic ripple strengthens theoretical, according to the difference of multifrequency transducer parameters characteristic and the change of operating mode, by to two-way ultrasonic frequency, power and between the controlling and adjustment of phase difference, find optimum working parameter, drive multifrequency transducer to reach best effort effect.2, the control chip that the utility model is used sends frequency, duty ratio and phase-difference control signal, utilize digital control technology to occur signal and the output signal of power amplification unit controls, the frequency therefore outputed signal, power and between phase difference can accurate adjustment.Frequency-tracking unit adopts voltage signal acquisition module, current signal collection module correspondence to gather voltage, the current signal of two-way ultrasonic signal, and adopt phase relation judge module and phase signal extraction module to feed back to control chip to the voltage gathered, current signal after processing respectively, realize the resonance frequency search to multifrequency transducer and tracking.The frequency of each functional module to two-way ultrasonic signal does not all limit, and therefore the utility model can, according to the work requirements of multifrequency transducer, make it be operated in larger frequency range, applied widely.3, frequency-tracking unit of the present utility model is owing to being divided into frequency sweep and phase-locked two parts function: frequency sweep function works when multifrequency transducer does not reach resonance condition, by the switching controls of each passage of analog multichannel switch, judge phase relation between two-way collection signal voltage separately, electric current by phase relation judge module respectively, and make two-way ultrasonic signal search rapidly corresponding resonance frequency by the method for search output lowest high-current value; Phase-locked function multifrequency transducer in resonance condition time work, real-time phase signal extraction process is carried out by the voltage to two-way ultrasonic signal, electric current, monitor phase difference between the respective voltage of the utility model two-way output ultrasonic wave signal, electric current whether to remain in threshold range, keep multifrequency transducer steady operation in resonance condition (i.e. optimum state) by the switch operating of frequency sweep and phase-locked function, therefore have that control algolithm is simple, frequency search follows the tracks of advantage that is rapid and stable performance.For the foregoing reasons, the utility model extensively can be promoted in power ultrasonic application of power field.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail.
As shown in Figure 1, the utility model multiple-frequency supersonic ripple power supply, it comprises signal and occurs and power amplification unit 1, frequency-tracking unit 2 and control unit 3.
Signal occurs and power amplification unit 1 comprises two ultrasonic wave generation module 11, two traffic filter 12, two power amplifier driver module 13 and two power amplifiers 14.The two-way that signal occurs and power amplification unit 1 is divided into structure identical, each road includes the ultrasonic wave generation module 11 of an input connection control unit 3, output connection signal filter 12, power amplifier driver module 13, power amplifier 14 and the multifrequency transducer successively of each ultrasonic wave generation module 11; Ultrasonic wave generation module 11 produces corresponding frequencies, duty ratio according to the control signal that control unit 3 sends and has the ultrasonic signal of initial phase, and successively through traffic filter 12 filtering, filtered signal triggers power amplifier driver module 13 and works, power amplifier driver module 13 provides driving-energy for power amplifier 14, carry out the amplification of signal with Driver amplifier 14, the signal after amplification drives the work of multifrequency transducer.
Frequency-tracking unit 2 comprises two current signal collection module 21, two voltage signal acquisition module 22, four traffic filter 23, analog multichannel switch 24, phase relation judge module 25,1 first A/D converters 26, two phase place difference signal extraction module 27 and two second A/D converters 28.
Wherein, the output of each power amplifier 14 is corresponding separately connects current signal collection module 21 and a voltage signal acquisition module 22, and each current signal collection module 21 is connected a traffic filter 23 with the output of voltage signal acquisition module 22 is all corresponding.
The output of each traffic filter 23 is divided into two-way:
The input of one road connecting analog variable connector 24, the output of analog multichannel switch 24 connects phase relation judge module 25 and the first A/D converter 26 respectively, and send analog multichannel switch 24 output voltage and output current signal to phase relation judge module 25, output current signal sends the first A/D converter 26 to, the output connection control unit 3 respectively of phase relation judge module 25 and the first A/D converter 26, with the frequency sweep function of forming frequency tracking cell 2, the resonance frequency of multifrequency transducer is found by the form of frequency sweep, its course of work is: each current signal collection module 21 and voltage signal acquisition module 22 send the electric current of the corresponding output ultrasonic wave signal collected and voltage signal to corresponding traffic filter 23 and carry out filtering, then analog multichannel switch 24 is sent to.Control unit 3 sends sampled signal switch-over control signal to analog multichannel switch 24, gating passes through one group of electric current and the voltage signal of analog multichannel switch 24, and send the electric current of output and voltage signal to phase relation judge module 25, the phase relation of both real-time judge, and send the feedback signal of this phase relation of reflection to control unit 3, occur and the adding frequently or subtract frequently of power amplification unit 1 output frequency to be realized signal by control unit 3.The current signal of output is sent to the first A/D converter 26, control unit 3 is sent to after conversion, control unit 3 is according to the current value of real-time reception and in conjunction with frequency corresponding during above-mentioned phase relation deterministic process fast search lowest high-current value, with the frequency sweep function of forming frequency tracking cell 2, the two-way resonance frequency of multifrequency transducer is obtained respectively by frequency sweep function, control unit 3 occurs according to this frequency control signal and power amplification unit 1 exports corresponding resonance frequency, makes multifrequency transducer be operated in resonance condition.
Another road connects phase signal extraction module 27, second A/D converter 28 and control unit 3 successively, the phase-locked function of forming frequency tracking cell 2, whether resonance condition is remained operating in Real-Time Monitoring multifrequency transducer, its course of work is: two-way phase signal extraction module 27 extracts phase difference between each self-corresponding electric current of two-way ultrasonic signal and voltage, and feed back to control unit 3 respectively converted thereof into the digital quantity of reflection electric current and voltage phase difference information by the second A/D converter 28 after, whether be operated in resonance condition with Real-Time Monitoring multifrequency transducer; When between the electric current and voltage on any road, the digital quantity of phase signal exceeds the threshold range that control unit 3 sets, the off resonance of multifrequency transducer, frequency-tracking unit 2 reenters frequency sweep state.
The characteristic that when said frequencies tracking cell 2 is operated in resonance condition with multifrequency transducer, operating current is maximum, for foundation, is design basis in conjunction with the technology of frequency tracking principle based on phase information.
In above-described embodiment, current signal collection module 21 can adopt current transformer.Voltage signal acquisition module 22 can adopt voltage transformer.Phase relation judge module 25 realizes by d type flip flop.Phase signal extraction module 27 can be realized by digital phase discriminator.
Control unit 3 comprises control chip 31, communication module 32, button 33 and display screen 34.
Wherein, control chip 31 carries out adjusting and judge whether multifrequency transducer is operated in resonance condition for the output frequency controlling ultrasonic wave generation module 11, the output frequency of signal controlling ultrasonic wave generation module 11 that feeds back according to frequency-tracking unit 2, it can be single-chip microcomputer, DSP (digital signal processor, digital signal processor), all kinds of embedded control unit with register such as FPGA (Field-Programmable Gate Array, field programmable gate array) and arm processor; Control chip 31 is electrically connected communication module 32 (signal input/output port and chip pin), button 33 and display screen 34 respectively.
Communication module 32 can be any host computer communication modes such as serial ports, Ethernet, bluetooth, to be connected and to carry out communication, receive the initial controling parameters of frequency, phase difference and power that host computer sends by communication module 32 with host computer.
Button 33 is single-frequency or multifrequency driving condition simultaneously for selecting mode of operation of the present utility model, and can arrange or adjust the frequency of two-way ultrasonic signal, power and phase difference parameter by button 33.
Display screen 34 is for checking the parameter information of current operating state of the present utility model and two-way ultrasonic signal.
During utility model works:
1), after the utility model powers on, keyed in by button 33 or inputted by host computer and send to the generation of control chip 31 control signal and power amplification unit 1 that the initial controling parameters of ultrasonic signal occurs by communication module 32: first via ultrasonic frequency f
1, the second tunnel ultrasonic frequency f
2, first via ultrasonic power p
1, the second road ultrasonic power p
2and the phase difference between two-way ultrasonic signal
and if two-way output signal is same frequency signal, phase difference only has one therebetween, is preset phase difference
if two-way output signal is two frequency multiplication relations, phase difference has two values therebetween, and wherein initial phase is that preset phase is poor
the rest may be inferred.
The setting of above-mentioned ultrasonic frequency is design frequency according to connected multifrequency transducer and determines.
2) control chip 31 converts the initial controling parameters received to ultrasonic wave generation module 11 discernible control signal, by first via ultrasonic frequency f
1, the second tunnel ultrasonic frequency f
2corresponding conversion becomes first via frequency control signal f
11, the second road frequency control signal f
22, two-way ultrasonic wave generation module 11 exports the ultrasonic signal of different frequency according to received frequency control signal; By first via ultrasonic power p
1, the second road ultrasonic power p
2corresponding conversion becomes first via duty cycle control signal p
11, the second road duty cycle control signal p
22, by can change the duty ratio of output ultrasonic wave signal to the adjustment of power parameter, and then realize the control to ultrasonic signal power output; By the phase difference between two-way ultrasonic signal
convert the phase control signal of first via ultrasonic signal to
with the phase control signal of the phase control signal of the second road ultrasonic signal
according to the difference of given phase control signal, the two-way ultrasonic signal that two-way ultrasonic wave generation module 11 exports has certain phase difference
3) control chip 31 is by first via frequency control signal f
11, first via duty cycle control signal p
11and phase control signal
send to one of them ultrasonic wave generation module 11; By the second road frequency control signal f
22, the second road duty cycle control signal p
22and phase control signal
send to another ultrasonic wave generation module 11.
Control chip 31 exports control signal refresh clock to ultrasonic wave generation module 11, upgrading for controlling the control signal of ultrasonic wave generation module 11 to input, namely controlling the two-way ultrasonic signal that ultrasonic wave generation module 11 produces corresponding new frequency, duty ratio and phase relation simultaneously.
The ultrasonic signal that two-way has predeterminated frequency, duty ratio and phase difference is sent according to ultrasonic wave generation module 11, power amplifier driver module 13 is sent to after corresponding signal filter 12 filtering, ultrasonic signal amplifies by power amplifier driver module 13 Driver amplifier 14, to drive connected multifrequency transducer work.
4) certain deviation may be there is between the resonance frequency of the multifrequency transducer connected due to the utility model and design frequency, and multifrequency transducer is by the impact of operating mode factor, resonance frequency during its work can fluctuate, therefore need to carry out frequency sweep and obtain resonance frequency, and whether remain operating in resonance condition by phase-locked function monitoring multifrequency transducer, thus steady operation, two groups of resonance frequencys of multifrequency transducer are separate in addition, therefore need to export two-way to carry out frequency sweep and phase-locked respectively.
1. when multifrequency transducer is not operated in resonance condition:
Current signal collection module 21 in frequency-tracking unit 2 and voltage signal acquisition module 22 gather the current signal i of two-way ultrasonic signal from signal generation and power amplification unit 1 output
1, i
2, voltage signal u
1, u
2, and disturb respectively by traffic filter 23 elimination of correspondence.
Control chip 31 control simulation variable connector 24 switches collection two-way ultrasonic signal, send u and i of the ultrasonic signal by analog multichannel switch 24 to phase relation judge module 25 on the one hand, real-time judge phase relation between the two, and add frequently according to the output frequency of its phase relation to signal generation and power amplification unit 1 or subtract frequently; Send the i of the ultrasonic signal passed through to first A/D converter 26 on the other hand, be converted to corresponding digital quantity through the first A/D converter 26, and be real-time transmitted to control chip 31.
U and i compares by phase relation judge module 25, and the phase relation feedback signal of the two is sent to control chip 31, and control chip 31 occurs according to feedback signal control signal and the output frequency of power amplification unit 1 carries out adding frequently or subtracts frequently.When carrying out adding frequency or subtracting frequently, control chip 31 sends corresponding control signal to ultrasonic wave generation module 11, then control signal refresh clock is exported to ultrasonic wave generation module 11, occur while realizing two-way ultrasonic signal, move in circles, until the current signal i received in the first A/D converter 26 is lowest high-current value, now corresponding output frequency is a wherein road resonance frequency of multifrequency transducer, and this resonance frequency is stored in the register of control chip 31.
After one road ultrasonic signal frequency sweep terminates, the control chip 31 control simulation variable connector 24 in control unit 3 switches the electric current and voltage signal that export and gather from another road ultrasonic signal, identical with the first via to the frequency sweep process of output signal.After two-way exports and all completes frequency sweep, the respective resonant frequency obtained by predetermined phase relationship output frequency sweep by the control chip 31 control signal generation in control unit 3 and power amplification unit 1.
2. when multifrequency transducer is operated in resonance condition:
The current signal i that two-way phase signal extraction module 27 process in real time gathers
1, i
2with voltage signal u
1, u
2, extract phase signal, i.e. i between each self-corresponding electric current of two-way ultrasonic signal, voltage
1with u
1between phase difference and i
2with u
2between phase difference, control chip 31 is fed back to respectively converted thereof into the digital quantity of reflection electric current and voltage phase difference information by the second A/D converter 28 after, when between the electric current and voltage on any road, the digital quantity of phase signal exceeds threshold range preset in control chip 31, the off resonance of multifrequency transducer, frequency-tracking unit 2 reenters frequency sweep state.
In above-described embodiment, the multifrequency transducer that the utility model connects can adopt two single-frequency transducers to substitute, and its course of work is identical, therefore no longer describes in detail.
The various embodiments described above are only for illustration of the utility model; wherein the structure of each parts, connected mode and manufacture craft etc. all can change to some extent; every equivalents of carrying out on the basis of technical solutions of the utility model and improvement, all should not get rid of outside protection range of the present utility model.
Claims (10)
1. a multiple-frequency supersonic ripple power supply, is characterized in that: it comprises signal and occurs and power amplification unit, frequency-tracking unit and control unit;
The control signal that described signal occurs and power amplification unit is used for exporting according to described control unit exports two-way ultrasonic signal simultaneously, and to drive the work of multifrequency transducer after carrying out signal filtering, power amplification;
Described frequency-tracking unit occurs according to described signal and the output of power amplification unit carries out frequency sweep and phase-locked to multifrequency transducer, and gives described control unit by the signal feedback in frequency sweep and phase locking process;
Described control unit adjusts the output frequency of the generation of described control signal and power amplification unit according to the feedback signal of described frequency-tracking unit.
2. multiple-frequency supersonic ripple power supply as claimed in claim 1, it is characterized in that: the two-way that described signal occurs and power amplification unit is divided into structure identical, each road includes the ultrasonic wave generation module that an input connects described control unit, connection signal filter, power amplifier driver module, power amplifier and the multifrequency transducer successively of the output of ultrasonic wave generation module described in each; Described ultrasonic wave generation module produces corresponding frequencies, duty ratio according to the control signal that described control unit sends and has the ultrasonic signal of initial phase, and successively through described traffic filter filtering, filtered signal triggers the work of described power amplifier driver module, described power amplifier driver module provides driving-energy for described power amplifier, with the amplification driving described power amplifier to carry out signal, the signal after amplification drives the work of multifrequency transducer.
3. multiple-frequency supersonic ripple power supply as claimed in claim 2, is characterized in that: described frequency-tracking unit comprises two current signal collection modules, two voltage signal acquisition modules, four traffic filters, an analog multichannel switch, a phase relation judge module, one first A/D converter, two phase place difference signal extraction module and two second A/D converters;
The output of power amplifier described in each is corresponding separately connects voltage signal acquisition module described in current signal collection module and described in, and current signal collection module described in each is connected traffic filter described in the output of described voltage signal acquisition module is all corresponding; Described in each, the output of traffic filter is divided into two-way: a road connects the input of described analog multichannel switch, the output of described analog multichannel switch connects described phase relation judge module and described first A/D converter respectively, and described phase relation judge module is connected described control unit respectively with the output of described first A/D converter; Another road connects described phase signal extraction module, described second A/D converter and described control unit successively;
Current signal collection module described in each and described voltage signal acquisition module send the electric current of the two-way ultrasonic signal collected and voltage signal to corresponding described traffic filter and carry out filtering, then described analog multichannel switch is sent to, described control unit sends sampled signal switch-over control signal to described analog multichannel switch, gating is by one group of electric current of described analog multichannel switch and voltage signal, and send the electric current of output and voltage signal to described phase relation judge module, the phase relation of both real-time judge, and send the feedback signal of this phase relation of reflection to described control unit, occur and the adding frequently or subtract frequently of power amplification unit output frequency to be realized signal by described control unit, send the current signal of output to described first A/D converter, described control unit is transferred to after conversion, described control unit is according to the current value of real-time reception and frequency corresponding when judging feedback signal fast search lowest high-current value in conjunction with described phase relation judge module, to form the frequency sweep function of described frequency-tracking unit, and the two-way resonance frequency of multifrequency transducer is obtained respectively by frequency sweep function, described control unit signal according to this FREQUENCY CONTROL occurs and power amplification unit exports corresponding resonance frequency, multifrequency transducer is made to be operated in resonance condition,
Phase signal extraction module described in two-way extracts phase difference between each self-corresponding electric current of two-way ultrasonic signal and voltage, and feed back to described control unit respectively converted thereof into the digital quantity of reflection electric current and voltage phase difference information by described second A/D converter after, be operated in resonance condition to keep multifrequency transducer; When between the voltage and electric current on any road, the digital quantity of phase signal exceeds the threshold range that described control unit sets, the off resonance of multifrequency transducer, described frequency-tracking unit reenters frequency sweep state.
4. multiple-frequency supersonic ripple power supply as claimed in claim 3, is characterized in that: described current signal collection module adopts current transformer.
5. multiple-frequency supersonic ripple power supply as claimed in claim 3, is characterized in that: described voltage signal acquisition module adopts voltage transformer.
6. multiple-frequency supersonic ripple power supply as claimed in claim 4, is characterized in that: described voltage signal acquisition module adopts voltage transformer.
7. the multiple-frequency supersonic ripple power supply as described in claim 3 or 4 or 5 or 6, is characterized in that: described phase relation judge module adopts d type flip flop.
8. multiple-frequency supersonic ripple power supply as claimed in claim 7, is characterized in that: described phase signal extraction module adopts digital phase discriminator.
9. the multiple-frequency supersonic ripple power supply as described in Claims 2 or 3 or 4 or 5 or 6 or 8, is characterized in that: described control unit comprises described control chip, communication module, button and display screen; Described control chip is electrically connected described communication module, described button and described display screen respectively;
For control described signal occur and the frequency of power amplification unit, phase difference and power initial parameter by the described communication module that receives from host computer or by described button key in both one of mode send described control chip to; Described control chip carries out according to the control signal received the output frequency controlling the generation of described signal and power amplification unit, and adjust described signal according to the feedback signal of described frequency-tracking unit and occur and the output frequency of power amplification unit, and at the parameter information of described display screen display current operating state and two-way ultrasonic signal.
10. multiple-frequency supersonic ripple power supply as claimed in claim 7, is characterized in that: described control unit comprises described control chip, communication module, button and display screen; Described control chip is electrically connected described communication module, described button and described display screen respectively;
For control described signal occur and the frequency of power amplification unit, phase difference and power initial parameter by the described communication module that receives from host computer or by described button key in both one of mode send described control chip to; Described control chip carries out according to the control signal received the output frequency controlling the generation of described signal and power amplification unit, and adjust described signal according to the feedback signal of described frequency-tracking unit and occur and the output frequency of power amplification unit, and at the parameter information of described display screen display current operating state and two-way ultrasonic signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520177369.XU CN204425320U (en) | 2015-03-26 | 2015-03-26 | Multiple-frequency supersonic ripple power supply |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104753531A (en) * | 2015-03-26 | 2015-07-01 | 大连交通大学 | Multi-frequency ultrasonic power supply |
| CN107425700A (en) * | 2017-06-13 | 2017-12-01 | 广东工业大学 | A kind of multi-path digital ultrasonic-frequency power supply |
| CN114798396A (en) * | 2022-03-17 | 2022-07-29 | 大连交通大学 | Multi-frequency ultrasonic vibration system with uniformly distributed output energy |
-
2015
- 2015-03-26 CN CN201520177369.XU patent/CN204425320U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104753531A (en) * | 2015-03-26 | 2015-07-01 | 大连交通大学 | Multi-frequency ultrasonic power supply |
| CN104753531B (en) * | 2015-03-26 | 2017-12-22 | 大连交通大学 | A kind of multiple-frequency supersonic ripple power supply |
| CN107425700A (en) * | 2017-06-13 | 2017-12-01 | 广东工业大学 | A kind of multi-path digital ultrasonic-frequency power supply |
| CN107425700B (en) * | 2017-06-13 | 2023-05-05 | 广东工业大学 | Multipath digital ultrasonic power supply |
| CN114798396A (en) * | 2022-03-17 | 2022-07-29 | 大连交通大学 | Multi-frequency ultrasonic vibration system with uniformly distributed output energy |
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