CN103558047B - Multi-frequency ultrasonic cleaning effect experimental platform - Google Patents
Multi-frequency ultrasonic cleaning effect experimental platform Download PDFInfo
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Abstract
The invention discloses a kind of multi-frequency ultrasonic cleaning effect experimental platform, it includes kernel control module, the first relay module, the second relay module, the 3rd relay module, input isolation module, power amplifier module, the first matching transformer, the second matching transformer, five ultrasonic signal generation modules, five coupling inductance and five transducer arrays；Wherein, kernel control module, its signal output part respectively with ultrasonic signal generation module, the first relay module, the second relay module, the 3rd relay module control signal input be connected, for according to input operating frequency select signal produce corresponding switch-over control signal be delivered separately to the first relay module, the second relay module and the 3rd relay module.The present invention can adopt many class frequencys to carry out underwater structure and clean soils research, highlights effectiveness and the comparative of cleaning performance, finds out the optimum frequency being best suitable for this underwater structure Fouling Cleaning in real time.
Description
Technical Field
The invention relates to a multi-frequency ultrasonic cleaning effect experiment platform, and belongs to the technical field of ultrasonic cleaning.
Background
At present, certain dirt is deposited on the surface of a dam gate or a dam body and other places where the dam gate or the dam body is immersed by water for a long time, so that the normal function of the dam gate or the dam body is influenced, and even equipment is damaged. At present, the experience of applying the ultrasonic technology to the cleaning operation of underwater structures is poor, and although an ultrasonic cleaning method of underwater large-scale equipment is already proposed, a single ultrasonic cleaning frequency is adopted in most cases under a certain specific environment. The physical properties, thickness, hardness and the like of the dirt are closely related to the water quality and the impurity properties in water, and the underwater construction is cleaned by adopting the ultrasonic transducer with single frequency, so that the engineering requirements are difficult to meet. On one hand, because the signal frequency is not properly selected, the cleaning effect is greatly reduced, and the working time of the ultrasonic transducer needs to be prolonged, so that the energy consumption is increased, and the energy conservation and emission reduction are not facilitated. On the other hand, if a single frequency ultrasonic transducer is used to clean some fragile and vulnerable surface dirt, the cleaned surface will be damaged or destroyed. Therefore, according to the surface conditions of different cleaned objects, the physical characteristics, thickness, hardness and the like of dirt, the signal frequency suitable for surface cleaning is selected for cleaning, the cleaning effect of underwater structures is improved, dam bodies are protected, the service time of the ultrasonic transducer is prolonged, and CO is reduced2The emission has positive significance.
Therefore, the development of an underwater structure surface cleaning device with self-adaptive characteristics, which can be applied to cleaning different surfaces and removing different dirt, is significant to the maintenance and the repair of the water conservancy facilities.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a multi-frequency ultrasonic cleaning effect experiment platform which can be used for researching the cleaning effect of the underwater structure dirt by adopting multiple groups of frequencies, highlighting the effectiveness and the contrast of the cleaning effect and finding out the optimal frequency which is most suitable for cleaning the underwater structure dirt in real time.
In order to solve the technical problems, the technical scheme of the invention is as follows: a multi-frequency ultrasonic cleaning effect experiment platform comprises a core control module, a first relay module, a second relay module, a third relay module, an input isolation module, a power amplification module, a first matching transformer, a second matching transformer, five ultrasonic signal generation modules, five matching inductors and five transducer arrays; wherein,
the signal output end of the core control module is respectively connected with the control signal input ends of the ultrasonic signal generation module, the first relay module, the second relay module and the third relay module, and is used for generating corresponding switching control signals according to the input working frequency selection signals and respectively transmitting the corresponding switching control signals to the first relay module, the second relay module and the third relay module;
the output ends of the five ultrasonic signal generating modules are selectively connected with the input isolating module through the first relay module respectively and are used for outputting ultrasonic driving signals with different frequencies respectively;
the first relay module is used for receiving the corresponding switching control signal and selectively connecting the corresponding ultrasonic signal generation module and the input isolation module;
the output end of the input isolation module is connected with the power amplification module and is used for driving the power amplification module to normally work;
the output end of the power amplification module is selectively connected with the first matching transformer and the second matching transformer through the second relay module respectively;
the second relay module is used for receiving the corresponding switching control signal and selectively connecting the power amplification module and the corresponding first matching transformer or second matching transformer;
the five matching inductors are respectively in one-to-one correspondence with the five ultrasonic signal generating modules, the input ends of three matching inductors are respectively selectively connected with the first matching transformer through the third relay module, the input ends of the other two matching inductors are respectively selectively connected with the second matching transformer through the third relay module, and the output ends of the five matching inductors are respectively connected with the corresponding transducer array and are used for tuning and matching the corresponding transducer array;
the first matching transformer and the second matching transformer are used for changing the impedance of the corresponding transducer array to enable the impedance to be matched with the source impedance, and the corresponding transducer array is guaranteed to obtain the maximum electric power;
the third relay module is used for receiving the corresponding switching control signal and selectively connecting the corresponding matching inductor and the first matching transformer; and the matching circuit is also used for receiving a corresponding switching control signal and selectively switching on the corresponding matching inductor and the second matching transformer.
Further, five ultrasonic signal produce the module and be first ultrasonic signal production module, second ultrasonic signal production module, third ultrasonic signal production module, fourth ultrasonic signal production module and fifth ultrasonic signal production module respectively, first ultrasonic signal produce the ultrasonic drive signal that module output frequency is 20KHz, second ultrasonic signal production module output frequency is 40 KHz's ultrasonic drive signal, third ultrasonic signal production module output frequency is 80 KHz's ultrasonic drive signal, fourth ultrasonic signal production module output frequency is 160 KHz's ultrasonic drive signal, fifth ultrasonic signal production module output frequency is 200 KHz's ultrasonic drive signal.
Further, the five matching inductors are respectively a first matching inductor, a second matching inductor, a third matching inductor, a fourth matching inductor and a fifth matching inductor, the first matching inductor corresponds to the first ultrasonic signal generating module, the resonant frequency of the first matching inductor is 20KHz, the second matching inductor corresponds to the second ultrasonic signal generating module, the resonant frequency of the second matching inductor is 40KHz, the third matching inductor corresponds to the third ultrasonic signal generating module, the resonant frequency of the third matching inductor is 80KHz, the fourth matching inductor corresponds to the fourth ultrasonic signal generating module, the resonant frequency of the fourth matching inductor is 160KHz, the fifth matching inductor corresponds to the fifth ultrasonic signal generating module, and the resonant frequency of the fifth matching inductor is 200 KHz.
Furthermore, the input isolation module is formed by connecting a driving circuit and an isolation transformer.
Furthermore, the power amplification module adopts a half-bridge type ultrasonic power amplification circuit.
Furthermore, the energy array is composed of a plurality of transducers, and each transducer is formed by connecting a plurality of piezoelectric ceramic plates in parallel.
After the technical scheme is adopted, the self-adaptive technology is adopted to carry out the research on the dirt cleaning effect of the underwater construction by utilizing the transducer arrays with five frequencies (which can be 20kHz, 40kHz, 80kHz, 160kHz and 200kHz) under different frequency bands and different states, so that the effectiveness and the contrast of the cleaning effect are highlighted, and the multi-frequency ultrasonic cleaning effect experimental platform has the characteristics of simple structure, low cost, energy conservation, convenience in operation, obvious cleaning effect, easiness in comparison and the like, and has important significance in the research aspect of the ultrasonic cleaning technology.
Drawings
Fig. 1 is a schematic block diagram of an experimental platform for multi-frequency ultrasonic cleaning effect of the present invention.
Detailed Description
In order that the present invention may be more readily and clearly understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
As shown in fig. 1, a multi-frequency ultrasonic cleaning effect experiment platform comprises a core control module, a first relay module 1, a second relay module 2, a third relay module 3, an input isolation module, a power amplification module, a first matching transformer, a second matching transformer, five ultrasonic signal generation modules, five matching inductors and five transducer arrays 4; wherein,
the signal output end of the core control module is respectively connected with the control signal input ends of the ultrasonic signal generation module, the first relay module 1, the second relay module 2 and the third relay module 3, and is used for generating corresponding switching control signals according to the input working frequency selection signals and respectively transmitting the corresponding switching control signals to the first relay module 1, the second relay module 2 and the third relay module 3;
the output ends of the five ultrasonic signal generating modules are selectively connected with the input isolation module through the first relay module 1 respectively and are used for outputting ultrasonic driving signals with different frequencies respectively;
the first relay module 1 is used for receiving a corresponding switching control signal and selectively switching on a corresponding ultrasonic signal generating module and an input isolation module so as to select the frequency of an ultrasonic driving signal, a common port of the first relay module 1 is connected with the input isolation module, and five selection ports are respectively connected with five ultrasonic signal generating modules and controlled by a core control module.
The output end of the input isolation module is connected with the power amplification module and is used for pre-amplifying the ultrasonic driving signal and isolating the ultrasonic signal generation module from the power amplification module so as to drive the power amplification module to normally work;
the output end of the power amplification module is selectively connected with the first matching transformer and the second matching transformer through the second relay module 2 respectively and is used for performing power amplification on the ultrasonic driving signal;
the second relay module 2 is used for receiving a corresponding switching control signal and selectively connecting the power amplification module and a corresponding first matching transformer or a second matching transformer; the common port of the second relay module 2 is connected with the power amplification module, and the two selective ports are respectively connected with the first matching transformer and the second matching transformer and controlled by the core control module.
The five matching inductors are respectively in one-to-one correspondence with the five ultrasonic signal generating modules, the input ends of three matching inductors are respectively selectively connected with the first matching transformer through the third relay module 3, the input ends of the other two matching inductors are respectively selectively connected with the second matching transformer through the third relay module 3, and the output ends of the five matching inductors are respectively connected with the corresponding transducer array 4 and used for tuning and matching the corresponding transducer array 4, so that the circuit of the corresponding transducer array 4 tends to be pure resistive;
the first matching transformer and the second matching transformer are used for changing the impedance of the corresponding transducer array 4 to enable the impedance to be matched with the source impedance, and the corresponding transducer array 4 is guaranteed to obtain the maximum electric power;
the third relay module 3 is used for receiving a corresponding switching control signal and selectively connecting a corresponding matching inductor and the first matching transformer; and the matching circuit is also used for receiving a corresponding switching control signal and selectively switching on the corresponding matching inductor and the second matching transformer.
The core control module takes an MSP430F149 single chip microcomputer as a core and controls the on-off modes of the three relay modules according to information input by keys, so that the function of selecting an ultrasonic signal with required frequency to drive the ultrasonic transducer to work is realized.
Five ultrasonic signal produce the module and be first ultrasonic signal respectively and produce the module, second ultrasonic signal produces the module, third ultrasonic signal produces the module, fourth ultrasonic signal produces module and fifth ultrasonic signal and produces the module, first ultrasonic signal produce the ultrasonic drive signal that module output frequency is 20KHz, second ultrasonic signal produces the ultrasonic drive signal that module output frequency is 40KHz, third ultrasonic signal produces the ultrasonic drive signal that module output frequency is 80KHz, fourth ultrasonic signal produces the ultrasonic drive signal that module output frequency is 160KHz, fifth ultrasonic signal produces the ultrasonic drive signal that module output frequency is 200 KHz.
The five matching inductors are respectively a first matching inductor, a second matching inductor, a third matching inductor, a fourth matching inductor and a fifth matching inductor, the first matching inductor corresponds to the first ultrasonic signal generation module, the resonance frequency of the first matching inductor is 20KHz, the second matching inductor corresponds to the second ultrasonic signal generation module, the resonance frequency of the second matching inductor is 40KHz, the third matching inductor corresponds to the third ultrasonic signal generation module, the resonance frequency of the third matching inductor is 80KHz, the fourth matching inductor corresponds to the fourth ultrasonic signal generation module, the resonance frequency of the fourth matching inductor is 160KHz, the fifth matching inductor corresponds to the fifth ultrasonic signal generation module, and the resonance frequency of the fifth matching inductor is 200 KHz. The five matching inductors can be formed by winding a PQ-28 type framework, E-E type ferrite and a silk covered wire.
The five ultrasonic signal generating modules are provided with SG3525 chips, and ultrasonic driving signals with the frequencies of 20kHz, 40kHz, 80kHz, 160kHz and 200kHz are generated by changing the resistance value of the 6 th pin of each chip.
The input isolation module is formed by connecting a driving circuit and an isolation transformer, the input isolation module is formed by the driving circuit taking a TIP122 chip NPN Darlington power transistor and a TIP127 chip PNP Darlington power transistor as cores, the purpose of driving an MOSFET is achieved, and the input isolation module comprises the isolation transformer which is wound by adopting a PQ-26 type framework, an E-E type magnetic core and a 0.27mm diameter enameled wire and has the turn ratio of an original coil to a secondary coil of 1:1, so that the interference of signals of a front-stage circuit and a rear-stage circuit is avoided.
The power amplification module adopts a half-bridge type ultrasonic power amplification circuit to amplify the power of the ultrasonic driving signals with five different frequencies to 100W.
The transducer array 4 of the present embodiment is composed of a 3 × 3 transducer array with center frequencies of 20kHz, 40kHz, 80kHz, 160kHz and 200kHz respectively, and realizes the static capacitance C with the corresponding transducer array 40And (5) tuning and matching. The ultrasonic frequency electric signal is converted into ultrasonic mechanical vibration to drive the waterproof shell to vibrate, so that ultrasonic cavitation is generated in water to peel off dirt on a building, and the aim of cleaning is fulfilled.
The first matching transformer can be a transformer formed by winding a PQ-28 type framework, E-E type ferrite and a wire covered wire, and the impedance matching of the rear-end corresponding transducer array 4 circuit and the front-end circuit is realized when the frequency is 20kHz, 40kHz and 80 kHz.
The second matching transformer can adopt a transformer formed by winding a PQ-28 type framework, E-E type ferrite and a wire covered wire, and the impedance matching of the circuit of the corresponding transducer array 4 at the rear end and the front end circuit is realized when the frequency is 160kHz and 200 kHz.
When the frequencies of the third relay module 3 are 20kHz, 40kHz and 80kHz, the upper common port of the third relay module is connected with a first matching transformer, the corresponding three selection ports are respectively connected with a first matching inductor, a second matching inductor and a third matching inductor and are controlled by a core control module, when the frequencies of the third relay module 3 are 160kHz and 200kHz, the lower common port of the third relay module is connected with a second matching transformer, and the corresponding two selection ports are respectively connected with a fourth matching inductor and a fifth matching inductor and are controlled by the core control module.
The working principle of the invention is as follows:
when experimental research is carried out on the five-frequency switchable ultrasonic cleaning experiment, the frequency of the ultrasonic signal for the experiment is selected according to needs. The selected ultrasonic driving signal frequency is set through the core control module, the core control module controls the corresponding ultrasonic signal generation module and the first relay module 1 to work in a coordinated mode, and simultaneously controls the second relay module 2 and the third relay module 3 to be connected with the corresponding first matching transformer or the second matching transformer and the corresponding matching inductor. The ultrasonic signal generating module generates two paths of unipolar square wave signals with same frequency and opposite phase peak values of 5V corresponding to the selected frequency, the unipolar square wave signals with the same frequency and opposite phase peak values of 5V are output to the driving circuit in the input isolation module through the first relay module 1, the two paths of unipolar square wave signals with the same frequency and opposite phase peak values of 5V are amplified and shaped into one path of bipolar square wave signals with peak values of 12V, the signals are divided into two paths of same frequency and opposite phase signals through the isolation transformer with the turn ratio of 1:1, and the two paths of same frequency and opposite. The output end of the power amplification module is connected with the second relay module 2, the selective output end of the second relay module 2 gates the first matching transformer or the second matching transformer, the power supply voltage of the power amplification module is 310V, the first matching transformer and the second matching transformer are used for realizing impedance matching with the transducer array 4, the output end of the first matching transformer is connected with the upper public port of the third relay module 3, and the corresponding selective port is connected with the first matching inductor, the second matching inductor and the third matching inductor; the output end of the second matching transformer is connected with the lower common port of the third relay module 3, and the corresponding selection port is connected with the fourth matching inductor and the fifth matching inductor. The core control module controls the second relay module 2 and the third relay module 3 to select a set signal transmission path, each selection port of the third relay module 3 is connected with each matching inductor, and the corresponding matching inductors are connected with the corresponding transducer array 4 through gating to realize tuning matching. The corresponding transducer array 4 converts the input ultrasonic electrical signal into ultrasonic mechanical vibration, so that the water in front of and behind the transducer array 4 generates an ultrasonic cavitation effect, and the surface of an object to be cleaned is cleaned in an ultrasonic mode. Changing the frequency of the selected ultrasonic waves, repeating the above processes, and carrying out targeted exploration on the dirt cleaning effect.
The above embodiments are described in further detail to solve the technical problems, technical solutions and advantages of the present invention, and it should be understood that the above embodiments are only examples of the present invention and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The utility model provides a multifrequency ultrasonic cleaning effect experiment platform which characterized in that: the ultrasonic transducer comprises a core control module, a first relay module (1), a second relay module (2), a third relay module (3), an input isolation module, a power amplification module, a first matching transformer, a second matching transformer, five ultrasonic signal generation modules, five matching inductors and five transducer arrays (4); wherein,
the signal output end of the core control module is respectively connected with the control signal input ends of the ultrasonic signal generation module, the first relay module (1), the second relay module (2) and the third relay module (3) and is used for generating corresponding switching control signals according to the input working frequency selection signals and respectively transmitting the corresponding switching control signals to the first relay module (1), the second relay module (2) and the third relay module (3);
the output ends of the five ultrasonic signal generating modules are selectively connected with the input isolation module through the first relay module (1) respectively and are used for outputting ultrasonic driving signals with different frequencies respectively;
the first relay module (1) is used for receiving a corresponding switching control signal and selectively switching on a corresponding ultrasonic signal generation module and an input isolation module;
the output end of the input isolation module is connected with the power amplification module and is used for driving the power amplification module to normally work;
the output end of the power amplification module is selectively connected with the first matching transformer and the second matching transformer through the second relay module (2);
the second relay module (2) is used for receiving the corresponding switching control signal and selectively switching on the power amplification module and the corresponding first matching transformer or second matching transformer;
the five matching inductors are respectively in one-to-one correspondence with the five ultrasonic signal generating modules, the input ends of three matching inductors are respectively selectively connected with the first matching transformer through the third relay module (3), the input ends of the other two matching inductors are respectively selectively connected with the second matching transformer through the third relay module (3), and the output ends of the five matching inductors are respectively connected with the corresponding transducer array (4) and used for tuning and matching the corresponding transducer array (4);
the first matching transformer and the second matching transformer are used for changing the impedance of the corresponding transducer array (4) to enable the impedance to be matched with the source impedance, and the corresponding transducer array (4) is guaranteed to obtain the maximum electric power;
the third relay module (3) is used for receiving corresponding switching control signals and selectively connecting corresponding matching inductors and the first matching transformer; the matching inductor is also used for receiving a corresponding switching control signal and selectively switching on a corresponding matching inductor and a second matching transformer;
the five ultrasonic signal generating modules are respectively a first ultrasonic signal generating module, a second ultrasonic signal generating module, a third ultrasonic signal generating module, a fourth ultrasonic signal generating module and a fifth ultrasonic signal generating module, wherein the first ultrasonic signal generating module outputs an ultrasonic driving signal with the frequency of 20KHz, the second ultrasonic signal generating module outputs an ultrasonic driving signal with the frequency of 40KHz, the third ultrasonic signal generating module outputs an ultrasonic driving signal with the frequency of 80KHz, the fourth ultrasonic signal generating module outputs an ultrasonic driving signal with the frequency of 160KHz, and the fifth ultrasonic signal generating module outputs an ultrasonic driving signal with the frequency of 200 KHz;
the five matching inductors are respectively a first matching inductor, a second matching inductor, a third matching inductor, a fourth matching inductor and a fifth matching inductor, the first matching inductor corresponds to the first ultrasonic signal generation module, the resonance frequency of the first matching inductor is 20KHz, the second matching inductor corresponds to the second ultrasonic signal generation module, the resonance frequency of the second matching inductor is 40KHz, the third matching inductor corresponds to the third ultrasonic signal generation module, the resonance frequency of the third matching inductor is 80KHz, the fourth matching inductor corresponds to the fourth ultrasonic signal generation module, the resonance frequency of the fourth matching inductor is 160KHz, the fifth matching inductor corresponds to the fifth ultrasonic signal generation module, and the resonance frequency of the fifth matching inductor is 200 KHz.
2. The multi-frequency ultrasonic cleaning effect experiment platform of claim 1, wherein: the input isolation module is formed by connecting a driving circuit and an isolation transformer.
3. The multi-frequency ultrasonic cleaning effect experiment platform of claim 1 or 2, wherein: the power amplification module adopts a half-bridge type ultrasonic power amplification circuit.
4. The multi-frequency ultrasonic cleaning effect experiment platform of claim 1, wherein: the transducer array (4) is composed of a plurality of transducers, and each transducer is formed by connecting a plurality of piezoelectric ceramic plates in parallel.
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| CN103876655A (en) * | 2014-03-27 | 2014-06-25 | 河海大学常州校区 | Kitchen cleaning and disinfecting machine with sound-light and ozone combined and working method thereof |
| CN106353118B (en) * | 2016-08-29 | 2019-11-22 | 南京巨鲨显示科技有限公司 | A kind of supersonic wave cleaning machine cleaning effect monitoring device |
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| US6538360B2 (en) * | 1996-08-05 | 2003-03-25 | William L. Puskas | Multiple frequency cleaning system |
| CN2726745Y (en) * | 2004-06-28 | 2005-09-21 | 上海科导超声仪器有限公司 | Multi-frequency ultrasonic cleaning device |
| CN201371144Y (en) * | 2009-03-05 | 2009-12-30 | 宁波新芝生物科技股份有限公司 | Multi-frequency ultrasonic cleaning machine |
| KR100972085B1 (en) * | 2009-12-15 | 2010-07-22 | 김윤수 | Method for suppling maximum efficiency power of ultrasonic cleaner |
| CN103341466A (en) * | 2013-07-29 | 2013-10-09 | 河海大学常州校区 | Multi-frequency switchable underwater construction cleaning and maintenance device |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6538360B2 (en) * | 1996-08-05 | 2003-03-25 | William L. Puskas | Multiple frequency cleaning system |
| CN2726745Y (en) * | 2004-06-28 | 2005-09-21 | 上海科导超声仪器有限公司 | Multi-frequency ultrasonic cleaning device |
| CN201371144Y (en) * | 2009-03-05 | 2009-12-30 | 宁波新芝生物科技股份有限公司 | Multi-frequency ultrasonic cleaning machine |
| KR100972085B1 (en) * | 2009-12-15 | 2010-07-22 | 김윤수 | Method for suppling maximum efficiency power of ultrasonic cleaner |
| CN103341466A (en) * | 2013-07-29 | 2013-10-09 | 河海大学常州校区 | Multi-frequency switchable underwater construction cleaning and maintenance device |
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