CN103559814B - Multi-frequency ultrasonic medicine residual cleaning degradation experiment platform - Google Patents

Multi-frequency ultrasonic medicine residual cleaning degradation experiment platform Download PDF

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Publication number
CN103559814B
CN103559814B CN201310557648.4A CN201310557648A CN103559814B CN 103559814 B CN103559814 B CN 103559814B CN 201310557648 A CN201310557648 A CN 201310557648A CN 103559814 B CN103559814 B CN 103559814B
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channel switch
frequency
coupling inductance
signal generator
supersonic
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CN201310557648.4A
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CN103559814A (en
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黄波
徐斐
朱进
朱昌平
高远
高莹
殷明
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河海大学常州校区
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Abstract

The invention discloses a kind of multi-frequency ultrasonic medicine residual cleaning degradation experiment platform, it comprises control panel, controller, the first multi-channel switch group, the second multi-channel switch group, the 3rd multi-channel switch group, the 4th multi-channel switch group, driving isolation module, power amplifier module, the first matching transformer, the second matching transformer, five supersonic signal generators, five coupling inductance and five transducers be arranged on respectively on corresponding reaction vessel; Control panel is connected to realize two-way signaling to be transmitted with controller; The signal output part of controller is connected with the control signal input end of the 4th multi-channel switch group with the first multi-channel switch group, the second multi-channel switch group, the 3rd multi-channel switch group respectively; The output terminal of five supersonic signal generators is connected with driving isolation module selective respectively by the first multi-channel switch group.The present invention can utilize the ultrasound wave under five kinds of frequencies from low to high to carry out the residual cleaning degradation experiment of medicine and probe into, and greatly extends the range of application of platform, enhances Experimental comparison's degree and reliability, facilitate scientific research personnel.

Description

Multi-frequency ultrasonic medicine residual cleaning degradation experiment platform

Technical field

The present invention relates to a kind of multi-frequency ultrasonic medicine residual cleaning degradation experiment platform, belong to ultrasonic medicine residual cleaning degraded field.

Background technology

At present, Pesticide Residue is produced in a large number along with agricultural chemicals and is widely used and produce, and it is estimated that agricultural chemicals, the product produced in the world at present mainly contains 420 kinds, it has played great function in crop pest control.But long-term, unreasonable, a large amount of use of agricultural chemicals causes residues of pesticides long term accumulation, and severe contamination agricultural product and ecologic environment, be detrimental to health directly or indirectly.China uses big country as pesticide producing main in the world, annual Pesticide use amount is up to 130 tons, Pesticide Residue becomes the food-safety problem that the sustainable development of restriction China is given prominence to the most gradually, and the pernicious food pollution event caused because of residues of pesticides and the agricultural exports Pesticide Residues accident that exceeds standard constantly describe the seriousness of problem.In recent years along with the raising of people's living standard, people are to food-safety problem and environmental ecology pay attention to day by day, and the residues of pesticides of how to degrade in agricultural product and environment have become the study hotspot of countries in the world.In current world wide, Methods of Degrading Pesticide Residues is main:

1, the conventional physical method such as washing, absorption: the method to exist the degraded removal effect of low concentration remains of pesticide not thoroughly, labour intensity is large, water consumption is large and the washing agent added in washing process exists secondary pollution problem.

2, the chemical method such as oxygenolysis, hydrolysis: utilize the method degrading pesticide residues general all more consuming time and cost is higher, effect also not too obviously shows, and some intermediate products also can bring secondary pollution.

3, biodegradation method: current this method is applied less in actual production, the stability of product and cost are often difficult to meet production practices requirement, need further research.

Therefore, develop a set of efficient, energy-conservation, water saving, the nontoxic residual cleaning biodegrading process of medicine for enlivening processing of farm products market, save and utilize water resource, to preserve the ecological environment and health has important practical significance.From last century the nineties, applied power ultrasonic degradation process Organic Pollutants In Water in the world, especially to the process of poisonous Recalcitrant chemicals, achieve certain effect, ultrasonic degradation technology be efficient with it, attention that low consumption, the feature such as the simple non-secondary pollution of equipment cause researchist and stakeholder.Although existing by the correlative study of ultrasonic applications in the residual degraded of medicine, but be mostly ultrasound wave under certain characteristic frequency of research to the qualitative analysis of the residual degraded of variable concentrations variety classes medicine, all there is complex structure, ultrasonic frequency be single, degradation efficiency is low, be difficult to realize the problems such as multi-frequency cleaning degradation experiment carries out simultaneously, Experimental comparison's property difference reliability is low.

Summary of the invention

Technical matters to be solved by this invention is the defect overcoming prior art, a kind of multi-frequency ultrasonic medicine residual cleaning degradation experiment platform is provided, it can utilize the ultrasound wave under five kinds of frequencies from low to high to carry out the residual cleaning degradation experiment of medicine and probe into, greatly extend the range of application of platform, enhance Experimental comparison's degree and reliability, facilitate scientific research personnel.

In order to solve the problems of the technologies described above, technical scheme of the present invention is: a kind of multi-frequency ultrasonic medicine residual cleaning degradation experiment platform, and it comprises control panel, controller, the first multi-channel switch group, the second multi-channel switch group, the 3rd multi-channel switch group, the 4th multi-channel switch group, driving isolation module, power amplifier module, the first matching transformer, the second matching transformer, five supersonic signal generators, five coupling inductance and five transducers be arranged on respectively on corresponding reaction vessel; Wherein,

Control panel, it is connected to realize two-way signaling and transmits with controller, for receive and display controller transmission status information and for selecting frequency of operation and service frequency signal being passed to controller;

Controller, its signal output part is connected with the control signal input end of the 4th multi-channel switch group with the first multi-channel switch group, the second multi-channel switch group, the 3rd multi-channel switch group respectively, for receiving the service frequency signal of control panel transmission and producing corresponding switch-over control signal and pass to the first multi-channel switch group, the second multi-channel switch group, the 3rd multi-channel switch group and the 4th multi-channel switch group respectively;

Five supersonic signal generators, its output terminal is connected with driving isolation module selective respectively by the first multi-channel switch group, for exporting the with same frequency and reversed-phase signal of different frequency respectively;

First multi-channel switch group, for receiving corresponding switch-over control signal and selecting to connect corresponding supersonic signal generator and driving isolation module;

Driving isolation module, its output terminal is connected with power amplifier module, normally works for driving power amplification module;

Power amplifier module, its output terminal is connected with the first matching transformer and the second matching transformer selectivity respectively by the second multi-channel switch group;

Second multi-channel switch group, for receiving corresponding switch-over control signal and selecting to connect power amplifier module and corresponding first matching transformer or the second matching transformer;

Five coupling inductance, its respectively with five supersonic signal generator one_to_one corresponding, and wherein the input end of three coupling inductance is connected with the first matching transformer selectivity respectively by the 3rd multi-channel switch group, the input end of two other coupling inductance is connected with the second matching transformer selectivity respectively by the 4th multi-channel switch group, the output terminal of five coupling inductance is connected with corresponding transducer, respectively for carrying out resonance matching to corresponding transducer;

First matching transformer and the second matching transformer, for changing the impedance of corresponding transducer, making itself and source impedance match, ensureing that corresponding transducer obtains maximum electric power;

3rd multi-channel switch group, for receiving corresponding switch-over control signal and selecting to connect corresponding coupling inductance and the first matching transformer;

4th multi-channel switch group, for receiving corresponding switch-over control signal and selecting to connect corresponding coupling inductance and the second matching transformer.

Further, five described supersonic signal generators are respectively the first supersonic signal generator, second supersonic signal generator, 3rd supersonic signal generator, 4th supersonic signal generator and the 5th supersonic signal generator, the first described supersonic signal generator output frequency is the with same frequency and reversed-phase signal of 20KHz, the second described supersonic signal generator output frequency is the with same frequency and reversed-phase signal of 40KHz, the 3rd described supersonic signal generator output frequency is the with same frequency and reversed-phase signal of 80KHz, the 4th described supersonic signal generator output frequency is the with same frequency and reversed-phase signal of 160KHz, the 5th described supersonic signal generator output frequency is the with same frequency and reversed-phase signal of 200KHz.

Further, five described coupling inductance are respectively the first coupling inductance, second coupling inductance, 3rd coupling inductance, 4th coupling inductance and the 5th coupling inductance, first coupling inductance is corresponding with the first supersonic signal generator, and its resonance frequency is 20KHz, second coupling inductance is corresponding with the second supersonic signal generator, and its resonance frequency is 40KHz, 3rd coupling inductance is corresponding with the 3rd supersonic signal generator, and its resonance frequency is 80KHz, 4th coupling inductance is corresponding with the 4th supersonic signal generator, and its resonance frequency is 160KHz, 5th coupling inductance is corresponding with the 5th supersonic signal generator, and its resonance frequency is 200KHz.

Further, described each supersonic signal generator has SG3525 control chip.

Further, described driving isolation module comprises full bridge inverter and isolating transformer, isolating transformer has an input end and two output terminals, and the coil winding direction of two output terminals is anti-phase, the input end of full bridge inverter is connected with the output terminal of supersonic signal generator, the input end of isolating transformer is connected with the output terminal of full bridge inverter, and two output terminals of isolating transformer are connected with ultrasonic power amplifying circuit respectively.

Further, described ultrasonic power amplifying circuit is semi-bridge type D class power amplification circuit.

Further, five described transducers are affixed on the bottom of corresponding reaction vessel respectively.

After have employed technique scheme, due to this ultrasonic medicine residual cleaning degradation experiment platform, can respectively under five kinds of frequencies (such as: 20kHz, 40kHz, 80kHz, 160kHz and 200kHz) carry out the residual cleaning degradation experiment of medicine and probe into, have greatly expanded platform application scope, enhance Experimental comparison's degree and reliability, the residual cleaning degradation experiment of medicine meeting scientific research personnel's five kinds of frequencies under different frequency range is probed into, and this platform structure is simple, it is convenient for quickening scientific research progress to control, find out efficiently a set of, energy-conservation, water saving, nontoxic medicine residual cleaning biodegrading process is significant.

Accompanying drawing explanation

Fig. 1 is the theory diagram of multi-frequency ultrasonic medicine of the present invention residual cleaning degradation experiment platform.

Embodiment

In order to make content of the present invention more easily be clearly understood, below according to specific embodiment also by reference to the accompanying drawings, the present invention is further detailed explanation.

As shown in Figure 1, a kind of multi-frequency ultrasonic medicine residual cleaning degradation experiment platform, it comprises control panel, controller, the first multi-channel switch group, the second multi-channel switch group, the 3rd multi-channel switch group, the 4th multi-channel switch group, driving isolation module, power amplifier module, the first matching transformer, the second matching transformer, five supersonic signal generators, five coupling inductance and five transducers be arranged on respectively on corresponding reaction vessel; Wherein,

Control panel, it is connected to realize two-way signaling and transmits with controller, for receive and display controller transmission status information and for selecting frequency of operation and service frequency signal being passed to controller; This control panel has He Ne laser button and LCDs, and He Ne laser button can select transmission information to controller according to the button of user, simultaneously in the ultrasonic frequency that liquid crystal display screen display currently used cleaning degraded medicine is residual.

Controller, its signal output part is connected with the control signal input end of the 4th multi-channel switch group with the first multi-channel switch group, the second multi-channel switch group, the 3rd multi-channel switch group respectively, for receiving the service frequency signal of control panel transmission and producing corresponding switch-over control signal and pass to the first multi-channel switch group, the second multi-channel switch group, the 3rd multi-channel switch group and the 4th multi-channel switch group respectively; Controller adopts MSP430F149 single-chip microcomputer, the gating of three electronic switch groups is controlled according to the input information of control panel, thus realize selecting the ultrasonic frequency of the residual cleaning degraded of medicine as required and driving corresponding transducer work, on the other hand, control control panel and show correct information.

Five supersonic signal generators, its output terminal is connected with driving isolation module selective respectively by the first multi-channel switch group, for exporting the with same frequency and reversed-phase signal of different frequency respectively;

First multi-channel switch group, for receiving corresponding switch-over control signal and selecting to connect corresponding supersonic signal generator and driving isolation module; First multi-channel switch group is that electronic switch thrown by hilted broadsword five.

Driving isolation module, its output terminal is connected with power amplifier module, normally works for driving power amplification module;

Power amplifier module, its output terminal is connected with the first matching transformer and the second matching transformer selectivity respectively by the second multi-channel switch group;

Second multi-channel switch group, for receiving corresponding switch-over control signal and selecting to connect power amplifier module and corresponding first matching transformer or the second matching transformer; Second multi-channel switch group is that electronic switch thrown by hilted broadsword two.

Five coupling inductance, its respectively with five supersonic signal generator one_to_one corresponding, and wherein the input end of three coupling inductance is connected with the first matching transformer selectivity respectively by the 3rd multi-channel switch group, the input end of two other coupling inductance is connected with the second matching transformer selectivity respectively by the 4th multi-channel switch group, the output terminal of five coupling inductance is connected with corresponding transducer, respectively for carrying out resonance matching to corresponding transducer;

First matching transformer and the second matching transformer, for changing the impedance of corresponding transducer, making itself and source impedance match, ensureing that corresponding transducer obtains maximum electric power;

3rd multi-channel switch group, for receiving corresponding switch-over control signal and selecting to connect corresponding coupling inductance and the first matching transformer; 3rd multi-channel switch group is single-pole triple-throw (SPTT) electronic switch.

4th multi-channel switch group, for receiving corresponding switch-over control signal and selecting to connect corresponding coupling inductance and the second matching transformer.4th multi-channel switch group is that electronic switch thrown by hilted broadsword two.

Five supersonic signal generators are respectively the first supersonic signal generator, second supersonic signal generator, 3rd supersonic signal generator, 4th supersonic signal generator and the 5th supersonic signal generator, the first described supersonic signal generator output frequency is the with same frequency and reversed-phase signal of 20KHz, the second described supersonic signal generator output frequency is the with same frequency and reversed-phase signal of 40KHz, the 3rd described supersonic signal generator output frequency is the with same frequency and reversed-phase signal of 80KHz, the 4th described supersonic signal generator output frequency is the with same frequency and reversed-phase signal of 160KHz, the 5th described supersonic signal generator output frequency is the with same frequency and reversed-phase signal of 200KHz.

Five coupling inductance are respectively the first coupling inductance, second coupling inductance, 3rd coupling inductance, 4th coupling inductance and the 5th coupling inductance, first coupling inductance is corresponding with the first supersonic signal generator, and its resonance frequency is 20KHz, second coupling inductance is corresponding with the second supersonic signal generator, and its resonance frequency is 40KHz, 3rd coupling inductance is corresponding with the 3rd supersonic signal generator, and its resonance frequency is 80KHz, 4th coupling inductance is corresponding with the 4th supersonic signal generator, and its resonance frequency is 160KHz, 5th coupling inductance is corresponding with the 5th supersonic signal generator, and its resonance frequency is 200KHz.Five coupling inductance respectively with corresponding transducer static electric capacity C 0coordinate and realize resonance matching.

The connection of each self-corresponding coupling inductance and the first matching transformer when 3rd multi-channel switch group is for selecting signal frequency to be 20kHz, 40kHz and 80kHz.

The connection of each self-corresponding coupling inductance and the second matching transformer when 4th multi-channel switch group is for selecting signal frequency to be 160kHz and 200kHz.

First matching transformer realizes the impedance matching of transducer and front-end circuit when 20kHz, 40kHz and 80kHz.Second matching transformer realizes the impedance matching of transducer and front-end circuit when 160kHz and 200kHz.

Described each supersonic signal generator has SG3525 control chip.And respectively by change the 6th pin resistance value, produce the ultrasound wave drive singal of five kinds of different frequencies respectively, be respectively 20kHz, 40kHz, 80kHz, 160kHz and 200kHz.

In order to improve the driving force of signal, be beneficial to and drive follow-up ultrasonic power amplifying circuit, driving isolation module, for isolating supersonic signal generator and power amplifier module, comprises full bridge inverter and isolating transformer, wherein, the upper pipe of each half-bridge of full bridge inverter is NPN Darlington power transistor TIP122, and lower pipe is PNP Darlington power transistor TIP127, increases the power of ultrasonic signal, improve the driving force of signal, be beneficial to and drive follow-up ultrasonic power amplifier; The former secondary coil turn ratio of isolating transformer is 1:1, isolating transformer has an input end and two output terminals, and the coil winding direction of two output terminals is anti-phase, the input end of full bridge inverter is connected with the output terminal of supersonic signal generator, the input end of isolating transformer is connected with the output terminal of full bridge inverter, and two output terminals of isolating transformer are connected with ultrasonic power amplifying circuit respectively.

Described ultrasonic power amplifying circuit is semi-bridge type D class power amplification circuit.The output power of the signal produced front end rises to 50W.

Five described transducers are affixed on the bottom of corresponding reaction vessel respectively.Described five reaction vessels holding reaction liquid are independently, be in same environment, five reaction vessels are identical, make by ferrous material, be of similar shape, volume, height and floorage, each reaction container bottom transducer and reaction vessel adopt direct bonding way to be connected, and the link position of transducer is the center of reaction container bottom.

The use procedure of this device is as follows:

First the frequency needed in experiment is determined, appropriate deionized water and reactant is added in corresponding reaction vessel, and make the blank sample of experiment, suppose to test the ultrasonic signal selecting 80kHz, then frequency is set by control panel, controller receives corresponding signal and controls the first multi-channel switch group selection the 3rd supersonic signal generator, control the second multi-channel switch group selection first matching transformer, control the 3rd multi-channel switch group selection the 3rd and mate inductance.3rd supersonic signal generator produces the unipolar square wave signal that 80kHz two-way with same frequency and reversed-phase peak value is 5V, the driving circuit in driving isolation module is sent to through the first multi-channel switch group, two-way with same frequency and reversed-phase peak value is that the unipolar square wave signal of 5V is shaped as through amplifying the bipolar square wave signal that a road peak value is 12V, signal is divided into two-way with same frequency and reversed-phase signal via isolating transformer, drive coupled power amplifier module, power amplifier module output terminal connects the second multi-channel switch group, when frequency is 80kHz, the second multi-channel switch group connects the first matching transformer, the source voltage of power amplifier module is the filtered voltage of 220V AC rectification (about 340V), the first matching transformer is sent at power amplifier module output terminal by the second multi-channel switch group after being amplified, for realizing the impedance matching with converter circuitry, first matching transformer output terminal connects the 3rd multi-channel switch group, when frequency is 80kHz, the 3rd multi-channel switch group connects the 3rd coupling inductance in five groups of coupling inductance, 3rd coupling inductance is for realizing the resonance matching with corresponding transducer, 3rd coupling inductance output end connects the transducer of medicine residual cleaning degradation reaction container bottom, under the effect of ultrasound drive signals, the ultrasonic electric signal of input is converted into high-frequency mechanical vibration and drives reaction vessel to vibrate by transducer, thus make the liquid generation ultrasound cavitation effect in reaction vessel, clean the medicine on vegetables and fruits surface is residual and degrades.Experiment terminates laggard row Data acquisition and issuance, changes experiment hyperacoustic frequency used subsequently, repeats above step.Finally to all data analysis of collecting and conclusion, carry out probing into of experiment topic.

Above-described specific embodiment; computational problem, technical scheme and beneficial effect that the present invention solves are further described; be understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (5)

1. a multi-frequency ultrasonic medicine residual cleaning degradation experiment platform, it comprises control panel, controller, the first multi-channel switch group, the second multi-channel switch group, the 3rd multi-channel switch group, the first matching transformer, the second matching transformer, driving isolation module, power amplifier module, five supersonic signal generators, five coupling inductance and five transducers be arranged on respectively on corresponding reaction vessel; Wherein,
Control panel, it is connected to realize two-way signaling and transmits with controller, for receive and display controller transmission status information and for selecting frequency of operation and service frequency signal being passed to controller;
Controller, its signal output part is connected with the control signal input end of the 3rd multi-channel switch group with the first multi-channel switch group, the second multi-channel switch group respectively, for receiving the service frequency signal of control panel transmission and producing corresponding switch-over control signal and pass to the first multi-channel switch group, the second multi-channel switch group, the 3rd multi-channel switch group respectively;
Five supersonic signal generators, its output terminal is connected with driving isolation module selective respectively by the first multi-channel switch group, for exporting the with same frequency and reversed-phase signal of different frequency respectively;
First multi-channel switch group, for receiving corresponding switch-over control signal and selecting to connect corresponding supersonic signal generator and driving isolation module;
Driving isolation module, its output terminal is connected with power amplifier module, normally works for driving power amplification module;
Power amplifier module, its output terminal is connected with the first matching transformer and the second matching transformer selectivity respectively by the second multi-channel switch group;
Second multi-channel switch group, for receiving corresponding switch-over control signal and selecting to connect power amplifier module and corresponding first matching transformer or the second matching transformer;
Five coupling inductance, its respectively with five supersonic signal generator one_to_one corresponding, and wherein the input end of three coupling inductance is connected with the first matching transformer selectivity respectively by the 3rd multi-channel switch group, the output terminal of five coupling inductance is connected with corresponding transducer, respectively for carrying out resonance matching to corresponding transducer;
First matching transformer and the second matching transformer, for changing the impedance of corresponding transducer, making itself and source impedance match, ensureing that corresponding transducer obtains maximum electric power;
3rd multi-channel switch group, for receiving corresponding switch-over control signal and selecting to connect corresponding coupling inductance and the first matching transformer;
It is characterized in that: also comprise the 4th multi-channel switch group, the signal output part of controller is connected with the control signal input end of the 4th multi-channel switch group, and controller is for receiving the service frequency signal of control panel transmission and producing corresponding switch-over control signal and pass to the 4th multi-channel switch group, five described supersonic signal generators are respectively the first supersonic signal generator, second supersonic signal generator, 3rd supersonic signal generator, 4th supersonic signal generator and the 5th supersonic signal generator, the first described supersonic signal generator output frequency is the with same frequency and reversed-phase signal of 20KHz, the second described supersonic signal generator output frequency is the with same frequency and reversed-phase signal of 40KHz, the 3rd described supersonic signal generator output frequency is the with same frequency and reversed-phase signal of 80KHz, the 4th described supersonic signal generator output frequency is the with same frequency and reversed-phase signal of 160KHz, the 5th described supersonic signal generator output frequency is the with same frequency and reversed-phase signal of 200KHz, the input end of two other coupling inductance in five coupling inductance is connected with the second matching transformer selectivity respectively by the 4th multi-channel switch group, five coupling inductance are respectively the first coupling inductance, second coupling inductance, 3rd coupling inductance, 4th coupling inductance and the 5th coupling inductance, first coupling inductance is corresponding with the first supersonic signal generator, and its resonance frequency is 20KHz, second coupling inductance is corresponding with the second supersonic signal generator, and its resonance frequency is 40KHz, 3rd coupling inductance is corresponding with the 3rd supersonic signal generator, and its resonance frequency is 80KHz, 4th coupling inductance is corresponding with the 4th supersonic signal generator, and its resonance frequency is 160KHz, 5th coupling inductance is corresponding with the 5th supersonic signal generator, and its resonance frequency is 200KHz, 4th multi-channel switch group is for receiving corresponding switch-over control signal and selecting to connect corresponding coupling inductance and the second matching transformer.
2. multi-frequency ultrasonic medicine according to claim 1 residual cleaning degradation experiment platform, is characterized in that: each supersonic signal generator has SG3525 control chip.
3. multi-frequency ultrasonic medicine according to claim 1 residual cleaning degradation experiment platform, it is characterized in that: described driving isolation module comprises full bridge inverter and isolating transformer, isolating transformer has an input end and two output terminals, and the coil winding direction of two output terminals is anti-phase, the input end of full bridge inverter is connected with the output terminal of supersonic signal generator, the input end of isolating transformer is connected with the output terminal of full bridge inverter, and two output terminals of isolating transformer are connected with ultrasonic power amplifying circuit respectively.
4. multi-frequency ultrasonic medicine according to claim 1 residual cleaning degradation experiment platform, is characterized in that: described ultrasonic power amplifying circuit is semi-bridge type D class power amplification circuit.
5. multi-frequency ultrasonic medicine according to claim 1 residual cleaning degradation experiment platform, is characterized in that: five described transducers are affixed on the bottom of corresponding reaction vessel respectively.
CN201310557648.4A 2013-11-11 2013-11-11 Multi-frequency ultrasonic medicine residual cleaning degradation experiment platform CN103559814B (en)

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