CN202823836U - Driving device for energy converter and debridement machine - Google Patents
Driving device for energy converter and debridement machine Download PDFInfo
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- CN202823836U CN202823836U CN201220430196.4U CN201220430196U CN202823836U CN 202823836 U CN202823836 U CN 202823836U CN 201220430196 U CN201220430196 U CN 201220430196U CN 202823836 U CN202823836 U CN 202823836U
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Abstract
The utility model provides a driving device for an energy converter. The driving device for the energy converter comprises a power supply, an inverter circuit and a building-out circuit, wherein the inverter circuit inverts a signal source output by the power supply to an alternating current, and the building-out circuit carries out impedance matching to the alternating current output by the inverter circuit and the energy converter. The driving device further comprises an input controller, a sampling circuit, a phase-comparison circuit and a digital signal processor (DSP) controller, wherein the input controller enables a user to input required power, the sampling circuit is used for collecting the voltage and the current output by the building-out circuit, the phase-comparison circuit is used for comparing the phases of the sampled voltage and the current, and the DSP controller controls the inverter process of the inverter circuit according to the signals output by the input controller and the phase-comparison circuit. The driving device for the energy converter can continuously adjust power, and automatically track frequency, can drive the energy converter to output different power according to the needs of the user, enables the energy converter to be in a good working frequency, and further improves working efficiency of the energy converter.
Description
Technical field
The utility model relates to a kind of drive unit, relates in particular to a kind of transducer with drive unit and uses its debridement machine.
Background technology
Along with the development of technology, the Medical wound-cleaning machine has obtained using more and more widely, and debridement machine mainly produces ultrasonic wave by ultrasonic transducer and cleans cleaning with the wound to patient.Concrete, ultrasonic transducer mainly is comprised of ultrasonic signal generator and rinse bath, ultrasonic signal generator produces high-frequency oscillation signal, change into the high frequency mechanical oscillation of per second several ten thousand times by transducer, (medium) forms ultrasonic wave in cleaning fluid, replace the mode radiation propagation in cleaning fluid that changes with malleation and negative pressure high frequency, make in the cleaning fluid constantly to produce countless micro-bubbles and constantly break (this phenomenon is referred to as " cavitation effect "), reach the effect of cleaning wound thereby utilize hyperacoustic concussion and break.
On the one hand, hyperacoustic power of transducer output only has two grades of height usually in the prior art, and perhaps fixing several gears are exported limited several power.Yet the situations such as patient's injured area or injured weight are different, so that the ultrasonic wave of client need different capacity carries out not only effectively but also the cleaning of energy-conserving and environment-protective it.
On the other hand, ultrasonic transducer has higher quality factor (Q value) usually, has precipitous resonance curve, transducer only is operated in its resonance point place and just has large mechanical activation amplitude and higher energy conversion efficiency, so, the drive circuit of ultrasonic transducer need to encourage with its resonant frequency signal, and ultrasonic transducer is worked efficiently.But the resonant frequency of transducer can be changed by the impact of factors, and major influence factors is as follows: the first, transducer in use can constantly wear out, and himself parameter in time, temperature etc. can change; The second, the load characteristic difference that transducer mates can cause the resonant frequency of himself different; The 3rd, transducer difference because of material, technique etc. in manufacturing process also can cause resonant frequency different.So, if transducer in different working environments and different circuit arrangement, it needs different driving sources encourage efficiently work.Be that the drive circuit of transducer need to have from the variation of the resonant frequency of motion tracking transducer and the ability that can keep this instant resonant frequency signal to drive.Exist transducer to realize automatically chasing after frequently by phase-locked loop circuit in the prior art, but it is difficult to realize accurate frequency tracking.Simultaneously, the user needs and can carry out continuous power control to transducer.So prior art lacks a kind ofly can be made the transducer continuous power control and automatically chase after under different power outputs frequently with the required hyperacoustic drive unit of output people of efficiently and accurately more.
Be understandable that, the statement of this part only provides the background information relevant with the utility model, may consist of or not consist of so-called prior art.
Summary of the invention
Technical problem to be solved in the utility model is that the drive unit for transducer in the prior art can not make transducer can automatically chase after again defective frequently by continuous power control under different power outputs, provide a kind of not only can continuous power control but also can automatically chase after transducer drive unit frequently.
The technical scheme that its technical problem that solves the utility model adopts provides a kind of transducer drive unit, and it comprises: power supply, be inverter circuit, and the match circuit that alternating current and the transducer of inversion output carried out impedance matching of alternating current with the signal source inversion of power supply output; The output of described match circuit is used for connecing transducer; Described drive unit also comprises: the phase-comparison circuit that be used for input regulator that the user inputs required power, be used for gathering the sample circuit of the voltage of match circuit output and electric current, the phase place of the voltage of sampling and electric current is compared, and according to the dsp controller of the inversion process of the signal controlling inverter circuit of input regulator and phase-comparison circuit output.
In the drive unit that the utility model provides, described match circuit comprises inductance L and capacitor C 2, C3, and an end of inductance L connects the output of inverter circuit, and its other end is series capacitance C3 and capacitor C 2 successively, and the two ends of capacitor C 2 connect the input of transducer.
In the drive unit that the utility model provides, also comprise the overcurrent-overvoltage protecting circuit that is connected between dsp controller and the inverter circuit.
In the drive unit that the utility model provides, also comprise the buffer circuit that is connected between dsp controller and the inverter circuit.
In the drive unit that the utility model provides, also comprise the wave filter for the signal filtering that power supply is exported that is connected between power supply and the inverter circuit.
In the drive unit that the utility model provides, also comprise being connected in the filtering shaping circuit that being used between sample circuit and the phase-comparison circuit carry out filtering and shaping with the signal of sample circuit collection.
In the drive unit that the utility model provides, described dsp controller is that model is the chip of DSPTMS320F2812.
In the drive unit that the utility model provides, described inverter circuit is full bridge inverter.
In the drive unit that the utility model provides, described input regulator is potential regulator.
In order better to solve the problems of the technologies described above, the utility model also provides a kind of debridement machine, it comprises the debridement machine main body, be positioned on the debridement machine main body for generation of hyperacoustic transducer, and be used for driving the drive unit of transducer, and drive unit be in the above-mentioned drive unit any one.
The transducer drive unit that the utility model provides, it can be according to the demand output order of the input regulator ON time with the control inverter circuit by dsp controller, and then changes the dutycycle of the signal of power supply output, and then realizes continuous power control; Simultaneously, dsp controller sends different frequency words and changes the ON time of inverter circuit to change the frequency of the driving source that drives transducer, it feeds back to dsp controller in conjunction with sample circuit and phase-comparison circuit with the duty of transducer, when the result of phase-comparison circuit comparison is that voltage-phase is when identical with current phase, show that the real-time frequency under this state is the resonant frequency point of transducer, then dsp controller sends the driving source that instruction makes this frequency of the fixing output of inverter circuit, thereby transducer is carried out automatic frequency sweep in realization and tracking is frequently fixed.The user can regulate input regulator according to demand continuously like this, so that the continuously adjustable ultrasonic wave of transducer power output, and this drive unit can be realized automatically chasing after frequently so that transducer is operated in the most efficient state.
Description of drawings
Fig. 1 is the transducer that provides of the utility model with the theory diagram of drive unit;
Fig. 2 is that the transducer that the utility model provides uses drive unit one preferred embodiment in conjunction with the theory diagram of transducer;
Fig. 3 is the transducer circuit theory diagrams that match circuit is connected with transducer in drive unit one preferred embodiment that the utility model provides;
Fig. 4 is the transducer circuit theory diagrams that inverter circuit is connected with transducer in drive unit one preferred embodiment that the utility model provides.
The specific embodiment
Clearer for technical problem, technical scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
The transducer drive unit that the utility model provides, it mainly adopts dsp controller to realize changing the ON time of inverter circuit in conjunction with the phase place of the electric current and voltage of the transducer work of feedback, thereby realizes automatic frequency adjustment and continuous power control.
Extremely shown in Figure 4 referring to Fig. 1, the transducer that the utility model provides mainly comprises with drive unit: power supply 7, inverter circuit 3, match circuit 8, input regulator 1, sample circuit 6, phase-comparison circuit 5, and DSP (Digital Signal Processing, Digital Signal Processing) controller 2.Wherein, the signal source of power supply 7 outputs is as the driving source of excitation transducer; Inverter circuit 3 links to each other with power supply 7, be used for signal source inversion with power supply 7 outputs and be alternating current with effective excitation transducer, and inverter circuit 3 links to each other to be controlled by dsp controller 2 with the output of DSP simultaneously; Match circuit 8 links to each other with the output of inverter circuit 3, is used for signal source and the transducer of inversion output are carried out impedance matching; Sample circuit 6 is used for gathering voltage and the electric current of match circuit output, and it links to each other with the output of match circuit; Phase-comparison circuit 5 is connected between sample circuit 6 and the dsp controller 2, is used for phase place with the voltage of 6 li collections of sample circuit and electric current and compares and feed back to dsp controller; Input regulator 1 is used for the user and inputs required power, and it links to each other with dsp controller 2.The ON time that dsp controller 2 sends switching tube in the instruction control inverter circuit 3 according to the signal of input regulator 1 and phase-comparison circuit 5 outputs changes the duty frequency when of the signal source of power supply 7 outputs, and then changes the duty frequency when of the driving source of excitation transducer.
Refer again to Fig. 2 and preferred embodiment shown in Figure 3, match circuit is connected between inverter circuit 3 and the transducer, match circuit can change perception and the resistance of transducer resonance, thereby can make transducer produce better resonance, improve the operating efficiency of transducer when reducing extraneous interference.Concrete, the circuit characteristic during resonance equals induction reactance for its capacitive reactance, because transducer integral body is capacitive, therefore need to provide the coupling of a perception just can cause resonance.In transducer used, if mate improperly, the transducer cisco unity malfunction can also cause the damage of transducer; Simultaneously, match circuit can utilize the transmission characteristic of network when improving load impedance characteristic, and transducer voltage peak point and valley point are carried out suitable compensation, to improve the transducer voltage response characteristic.Preferably, match circuit comprises inductance L and capacitor C 2, C3, and an end of inductance L connects the output of inverter circuit, and its other end is series capacitance C3 and capacitor C 2 successively, and the two ends of capacitor C 2 connect the input of transducer.This match circuit can mate the impedance operator of transducer preferably, and capacitor C 2 can reduce the interference of outer bound pair drive unit.
Also be electrically connected with overcurrent-overvoltage protecting circuit and buffer circuit between dsp controller 2 and the inverter circuit 3; overcurrent-overvoltage protecting circuit is used for preventing voltage on the inverter circuit 3 or the danger of the too high generation of electric current, and buffer circuit is used for reducing the interference of outer bound pair inverter circuit 3.Simultaneously, be connected with wave filter between power supply 7 and the inverter circuit 3, be used for the signal of power supply 7 outputs is carried out filtering, namely be used for removing the clutter of signal source.Further, be electrically connected with filtering shaping circuit between sample circuit 6 and the phase-comparison circuit 5, remove for the harmonic wave of the signal that sample circuit 6 is gathered, simultaneously this signal is carried out shaping.Wherein, the integrated chip with digital signal processing function that dsp controller 2 is well known to those skilled in the art, its conversion speed is fast, and signal handling capacity is stronger.Preferably, dsp controller 2 is the chip of DSPTMS320F2812 for model.Inverter circuit 3 is full bridge inverter 3, and its instruction response speed to dsp controller 2 outputs is faster, and can realize preferably inversion.Input regulator 1 is preferably potential regulator, and it is by changing the voltage of DSP input, the frequency word of exporting to regulate dsp controller 2, and then the adjusting of 3 pairs of dutycycles of change inverter circuit.In above-mentioned, wave filter, inverter circuit 3, buffer circuit, match circuit, overcurrent-overvoltage protecting circuit, sample circuit 6, and phase-comparison circuit 5 adopts is prior art, and it is well known to the skilled person, and does not repeat them here.
The transducer that the utility model is provided in conjunction with Fig. 2 and Fig. 3 roughly is described below with the operation principle of drive unit:
The user transfers potential regulator (being generally the button on the applied device housings of drive unit), to select the power of its required output, the current potential that the potential regulator input is different, send the inversion process that inverter circuit 3 is regulated in different instructions according to different current potentials in the dsp controller 2, namely regulate the ON time of switching tube Z1 to Z4 in the inverter circuit 3 with the change dutycycle, and then change the power output of driving source and transducer.Because potential regulator can the different current potential of continuous wave output, dsp controller 2 can make the ON time of inverter circuit 3 corresponding from different continuously current potentials by output order, and then exports continuous different power.So, after the user rotates potential regulator, the signal source of power supply 7 outputs is through getting final product the continuous driving source of power output after 3 inversions of process inverter circuit again behind the filter filtering, then L0 is the omission representation of match circuit in match circuit L0(figure) with driving source matching treatment rear drive transducer PZT, namely realize continuous power control.Simultaneously, dsp controller 2 can send the cline frequency scan instruction within the predetermined time in scheduled frequency range, change thereby the ON time that makes switching tube Z1 to Z4 in the inverter circuit 3 is corresponding, and then make the square wave of the continuous different frequency of inverter circuit 3 outputs.And, sample circuit 6 gathers operating voltage and the electric current of transducer simultaneously, after filtering shaping circuit is processed, phase comparator compares voltage-phase and current phase, when both phase places are identical, namely show at this moment driving source and transducer generation resonance, this moment, transducer worked in its resonant frequency point place, dsp controller 2 and then send frequency word makes the driving sources of inverter circuit 3 fixing these frequencies of output.Thereby, make transducer work in the best condition.
The utility model also provides a kind of debridement machine, it comprises the debridement machine main body, be positioned on the debridement machine main body for generation of hyperacoustic transducer, and be used for driving the drive unit of transducer, wherein, drive unit be in the above-mentioned drive unit any one.
So, when transducer because the time is aging, when temperature change, the change of thimerosal flow etc. affect, the transducer resonant frequency is drifted about.When transducer is worked, the drive unit that the utility model provides can be pursued the optimum resonant frequency point of transducer work automatically according to the electric current that gathers feedback and the situation of voltage-phase, makes the frequency of the driving source that drive unit sends reach the frequency optimum traffic of transducer; Simultaneously, the user can regulate drive unit according to operating position again and make the continuously adjustable ultrasonic wave of transducer power output.In like manner, the debridement machine that the utility model provides makes debridement machine can better adapt to different wounds so that the user can regulate according to operating positions such as wound size, thimerosal flows the operating power of transducer, and then fully effectively utilizes thimerosal cleaning wound; And the debridement function automatically chases after and frequently makes transducer work in resonant condition under this environment, and then reaches the best effort effect.
In description of the present utility model, unless otherwise prescribed and limit, need to prove, term " installation ", " linking to each other ", " connection " should be done broad understanding, for example, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be directly to link to each other, and also can indirectly link to each other by intermediary, for the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (10)
1. transducer drive unit, it is characterized in that, comprise: power supply, be inverter circuit, and the match circuit that the alternating current of inversion output and transducer are carried out impedance matching of alternating current with the signal source inversion of power supply output, the output of described match circuit is for connecing transducer;
Described drive unit also comprises: the phase-comparison circuit that be used for input regulator that the user inputs required power, be used for gathering the sample circuit of the voltage of match circuit output and electric current, the phase place of the voltage of sampling and electric current is compared, and according to the dsp controller of the inversion process of the signal controlling inverter circuit of input regulator and phase-comparison circuit output.
2. drive unit as claimed in claim 1, it is characterized in that, described match circuit comprises inductance L and capacitor C 2, C3, and an end of inductance L connects the output of inverter circuit, its other end is series capacitance C3 and capacitor C 2 successively, and the two ends of capacitor C 2 connect the input of transducer.
3. drive unit as claimed in claim 2 is characterized in that, also comprises the overcurrent-overvoltage protecting circuit that is connected between dsp controller and the inverter circuit.
4. drive unit as claimed in claim 3 is characterized in that, also comprises the buffer circuit that is connected between dsp controller and the inverter circuit.
5. drive unit as claimed in claim 1 is characterized in that, also comprises the wave filter for the signal filtering that power supply is exported that is connected between power supply and the inverter circuit.
6. drive unit as claimed in claim 1 is characterized in that, also comprises being connected in the filtering shaping circuit that being used between sample circuit and the phase-comparison circuit carry out filtering and shaping with the signal of sample circuit collection.
7. such as each described drive unit in the claim 1 to 6, it is characterized in that, described dsp controller is that model is the chip of DSPTMS320F2812.
8. such as each described drive unit in the claim 1 to 6, it is characterized in that, described inverter circuit is full bridge inverter.
9. such as each described drive unit in the claim 1 to 6, it is characterized in that, described input regulator is potential regulator.
10. debridement machine, comprise: the debridement machine main body, be positioned on the debridement machine main body for generation of hyperacoustic transducer, and be used for to drive the drive unit of transducer, it is characterized in that, described drive unit is each described transducer drive unit among the claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220430196.4U CN202823836U (en) | 2012-08-28 | 2012-08-28 | Driving device for energy converter and debridement machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220430196.4U CN202823836U (en) | 2012-08-28 | 2012-08-28 | Driving device for energy converter and debridement machine |
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| Publication Number | Publication Date |
|---|---|
| CN202823836U true CN202823836U (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220430196.4U Expired - Lifetime CN202823836U (en) | 2012-08-28 | 2012-08-28 | Driving device for energy converter and debridement machine |
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| CN (1) | CN202823836U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104548289A (en) * | 2014-12-16 | 2015-04-29 | 摩易国际股份有限公司 | Atomizer abnormity automatic detection device with replaceable atomizing spray head |
| CN105563808A (en) * | 2016-03-04 | 2016-05-11 | 珠海灵科自动化科技有限公司 | Control system of ultrasonic welding machine |
| CN107296993A (en) * | 2017-06-14 | 2017-10-27 | 成都润泰智通科技有限公司 | Using the Wound treatment apparatus of phase difference technology |
| CN110801160A (en) * | 2018-08-06 | 2020-02-18 | 佛山市顺德区美的电热电器制造有限公司 | Control method and system of cooking device and cooking device |
| CN112903090A (en) * | 2021-03-22 | 2021-06-04 | 上海理工大学 | Neural network-based langevin transducer resonant frequency detection method |
| CN116351686A (en) * | 2023-04-04 | 2023-06-30 | 重庆科技学院 | Variable-pressure variable-frequency ultrasonic cleaning machine generator and control method |
-
2012
- 2012-08-28 CN CN201220430196.4U patent/CN202823836U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104548289A (en) * | 2014-12-16 | 2015-04-29 | 摩易国际股份有限公司 | Atomizer abnormity automatic detection device with replaceable atomizing spray head |
| CN104548289B (en) * | 2014-12-16 | 2017-06-23 | 摩易国际股份有限公司 | The extremely automatic sensing structure of the atomizer of replaceable fog-spray nozzle |
| CN105563808A (en) * | 2016-03-04 | 2016-05-11 | 珠海灵科自动化科技有限公司 | Control system of ultrasonic welding machine |
| CN105563808B (en) * | 2016-03-04 | 2018-06-26 | 珠海灵科自动化科技有限公司 | ultrasonic welding machine control system |
| CN107296993A (en) * | 2017-06-14 | 2017-10-27 | 成都润泰智通科技有限公司 | Using the Wound treatment apparatus of phase difference technology |
| CN110801160A (en) * | 2018-08-06 | 2020-02-18 | 佛山市顺德区美的电热电器制造有限公司 | Control method and system of cooking device and cooking device |
| CN110801160B (en) * | 2018-08-06 | 2021-06-18 | 佛山市顺德区美的电热电器制造有限公司 | Control method and system of cooking device and cooking device |
| CN112903090A (en) * | 2021-03-22 | 2021-06-04 | 上海理工大学 | Neural network-based langevin transducer resonant frequency detection method |
| CN116351686A (en) * | 2023-04-04 | 2023-06-30 | 重庆科技学院 | Variable-pressure variable-frequency ultrasonic cleaning machine generator and control method |
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| GR01 | Patent grant | ||
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Granted publication date: 20130327 |