CN109731781A - Regulation method and regulation device based on ultrasonic screening system - Google Patents
Regulation method and regulation device based on ultrasonic screening system Download PDFInfo
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- CN109731781A CN109731781A CN201811616932.3A CN201811616932A CN109731781A CN 109731781 A CN109731781 A CN 109731781A CN 201811616932 A CN201811616932 A CN 201811616932A CN 109731781 A CN109731781 A CN 109731781A
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Abstract
The present invention provides a kind of regulation methods and regulation device based on ultrasonic screening system, the ultrasonic screening system includes energy converter, rack and silk screen, screen(ing) machine and the ultrasonic high pressure driving circuit for driving the energy converter, the regulation method based on ultrasonic screening system include: to the ultrasonic high pressure driving circuit input the ultrasonic screening system needed for frequency signal, wherein, the ultrasonic high pressure driver is powered using high-power constant-current supply；Detect the end voltage of the ultrasonic high pressure driving circuit；Based on the end voltage detected, the resonance frequency for regulating and controlling the energy converter is obtained, and the energy converter is regulated and controled based on the resonance frequency.According to the technical solution of the present invention, the ultrasonic screening efficiency of system can be effectively improved.
Description
Technical field
The present invention relates to ultrasonic screening technical fields, in particular to a kind of tune based on ultrasonic screening system
Prosecutor method and a kind of regulation device based on ultrasonic screening system.
Background technique
In the related technology, a ultrasonic wave sinusoidal signal, frequency are added in the energy converter load of ultrasonic screening system
When consistent with the resonance frequency of energy converter, energy converter resonance amplitude is maximum, and micro mist screening effect is best.However, when replacing wherein
Any one component will all cause the variation of load resonant frequency, if determining frequency or frequency sweep driving method using traditional,
When energy converter load resonant frequency changes, ultrasonic screening efficiency can be decreased obviously.
Summary of the invention
The present invention is based at least one above-mentioned technical problem, proposes a kind of new based on ultrasonic screening system
Regulation and control scheme can effectively improve the ultrasonic screening efficiency of system.
In view of this, the invention proposes a kind of new regulation method based on ultrasonic screening system, the ultrasonic wave
Screening system includes energy converter, rack and silk screen, screen(ing) machine and the ultrasonic high pressure driving circuit for driving the energy converter,
The regulation method based on ultrasonic screening system, comprising: Xiang Suoshu ultrasonic high pressure driving circuit inputs the ultrasonic wave
Frequency signal needed for screening system, wherein the ultrasonic high pressure driver is powered using high-power constant-current supply；Detection institute
State the end voltage of ultrasonic high pressure driving circuit；Based on the end voltage detected, obtain for regulating and controlling the energy converter
Resonance frequency, and the energy converter is regulated and controled based on the resonance frequency.
In the technical scheme, by detecting ultrasonic high pressure and driving to ultrasonic high pressure driving circuit input frequency signal
The end voltage of dynamic circuit realizes the automatic tracing to transducer frequency with the analysis based on opposite end voltage, to improve system
Ultrasonic screening efficiency.
In the above-mentioned technical solutions, it is preferable that further include: detect whether the resonance frequency drifts about；Determining
When stating resonance frequency shifts, the high-power constant-current supply is controlled to the ultrasonic high pressure driving circuit nonlinear object
Multiple and different frequency points, the multiple different frequent points and the resonance frequency are adjoining；Detect the ultrasonic high pressure driving circuit
End voltage change trend under the multiple different frequent points keeps terminal voltage value minimum to search from the multiple different frequent points
Target frequency point.
In the technical scheme, it is contemplated that the variation of temperature can make energy converter resonance frequency shifts, so passing through control
Make to the multiple and different frequency points of ultrasonic high pressure driving circuit nonlinear object, and detect ultrasonic high pressure driving circuit it is multiple not
With the end voltage change trend under frequency point, to search the minimum target frequency point of terminal voltage value of sening as an envoy to, target frequency point is most preferably may be used
Using frequency point, ultrasonic wave output is made to reach best power.
In any of the above-described technical solution, it is preferable that the frequency signal is by DDS (Direct Digital
Synthesizer, Direct Digital Frequency Synthesizers) synthesis.
According to the second aspect of the invention, a kind of regulation device based on ultrasonic screening system, the ultrasound are proposed
Wave screening system includes energy converter, rack and silk screen, screen(ing) machine and the ultrasonic high pressure driving electricity for driving the energy converter
Road, the regulation device based on ultrasonic screening system, comprising: output unit, for driving electricity to the ultrasonic high pressure
Frequency signal needed for road inputs the ultrasonic screening system, wherein the ultrasonic high pressure driver uses high power constant
Flow power supply power supply；First detection unit, for detecting the end voltage of the ultrasonic high pressure driving circuit；Regulate and control unit, is used for
Based on the end voltage detected, the resonance frequency for regulating and controlling the energy converter is obtained, and is based on the resonance frequency
Regulate and control the energy converter.
In the technical scheme, by detecting ultrasonic high pressure and driving to ultrasonic high pressure driving circuit input frequency signal
The end voltage of dynamic circuit realizes the automatic tracing to transducer frequency with the analysis based on opposite end voltage, to improve system
Ultrasonic screening efficiency.
In the above-mentioned technical solutions, it is preferable that further include: second detection unit, for whether detecting the resonance frequency
It drifts about；Control unit, for when determining the resonance frequency shifts, controlling the high-power constant-current supply to institute
The multiple and different frequency points of ultrasonic high pressure driving circuit nonlinear object are stated, the multiple different frequent points are adjacent with the resonance frequency
Closely；Processing unit becomes for detecting end voltage change of the ultrasonic high pressure driving circuit under the multiple different frequent points
Gesture, to search the target frequency point for keeping terminal voltage value minimum from the multiple different frequent points.
In the technical scheme, it is contemplated that the variation of temperature can make energy converter resonance frequency shifts, so passing through control
Make to the multiple and different frequency points of ultrasonic high pressure driving circuit nonlinear object, and detect ultrasonic high pressure driving circuit it is multiple not
With the end voltage change trend under frequency point, to search the minimum target frequency point of terminal voltage value of sening as an envoy to, target frequency point is most preferably may be used
Using frequency point, ultrasonic wave output is made to reach best power.
In any of the above-described technical solution, it is preferable that the frequency signal is synthesized by DDS.
By above technical scheme, the ultrasonic screening efficiency of system can be effectively improved.
Detailed description of the invention
Fig. 1 shows the exemplary flow of the regulation method based on ultrasonic screening system of embodiment according to the present invention
Figure；
Fig. 2 shows the schematic block diagrams of the regulation device based on ultrasonic screening system of embodiment according to the present invention.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real
Applying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application
Feature in example and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also
To be implemented using other than the one described here other modes, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
Below in conjunction with Fig. 1 and Fig. 2, technical scheme is described further:
In the present embodiment, ultrasonic screening system includes energy converter, rack and silk screen, screen(ing) machine and described for driving
The ultrasonic high pressure driving circuit of energy converter, as shown in Figure 1, the regulation method based on ultrasonic screening system includes:
Step 102, frequency signal needed for Xiang Suoshu ultrasonic high pressure driving circuit inputs the ultrasonic screening system,
Wherein, the ultrasonic high pressure driver is powered using high-power constant-current supply.
Step 104, the end voltage of the ultrasonic high pressure driving circuit is detected.
Step 106, based on the end voltage detected, the resonance frequency for regulating and controlling the energy converter is obtained, and
Regulate and control the energy converter based on the resonance frequency.
Inductance tandem ultrasonic transducer is loaded, the energy converter of ultrasonic activation sieve can regard a two end nets as
Network, energy converter pass through L0Power coupling matching is carried out between ultrasonic high pressure driving circuit, then energy converter load reactance are as follows: Z
=R+j*X then has in conjunction with ultrasonic wave ring energy device equivalent circuit:
Under constant current I mode, the end voltage of ultrasonic high pressure driving circuit are as follows: U1=I*Z (2), * is indicated in formula (2)
It is multiplied；
When energy converter is when resonance frequency point works, ideally its equivalent reactance is zero, then formula (1) can simplify are as follows:
Wherein, ω0Match resonance angular frequency for series connection, then when energy converter resonance, under constant current I mode, driving circuit
Hold voltage are as follows: U2=I*X (4)；
There are above-mentioned formula (2) and formula (4) to compare and can obtain, in energy converter load resonant point, energy converter load reactance is minimum, drives
There is minimum extreme value in dynamic circuit voltage, to ultrasonic high pressure driving circuit input frequency signal, detects ultrasonic high pressure driving electricity
The end voltage on road realizes the automatic tracing to transducer frequency with the analysis based on opposite end voltage, to improve the ultrasound of system
Screening efficiency.
Further, further includes: detect whether the resonance frequency drifts about；Determining that the resonance frequency floats
When shifting, the high-power constant-current supply is controlled to the multiple and different frequency points of ultrasonic high pressure driving circuit nonlinear object, institute
It states multiple and different frequency points and the resonance frequency is adjoining；The ultrasonic high pressure driving circuit is detected in the multiple different frequencies
End voltage change trend under point, to search the target frequency point for keeping terminal voltage value minimum from the multiple different frequent points.
In the technical scheme, it is contemplated that the variation of temperature can make energy converter resonance frequency shifts, so passing through control
Make to the multiple and different frequency points of ultrasonic high pressure driving circuit nonlinear object, and detect ultrasonic high pressure driving circuit it is multiple not
With the end voltage change trend under frequency point, to search the minimum target frequency point of terminal voltage value of sening as an envoy to, target frequency point is most preferably may be used
Using frequency point, ultrasonic wave output is made to reach best power.
In any of the above-described technical solution, it is preferable that the frequency signal is synthesized by DDS.
Fig. 2 shows the schematic block diagrams of the regulation device based on ultrasonic screening system of embodiment according to the present invention.
As shown in Fig. 2, the regulation device 200 based on ultrasonic screening system includes: that the detection of output unit 202, first is single
Member 204 and regulation unit 206.
Wherein, output unit 202 is used to input the ultrasonic screening system institute to the ultrasonic high pressure driving circuit
The frequency signal needed, wherein the ultrasonic high pressure driver is powered using high-power constant-current supply；First detection unit 204,
For detecting the end voltage of the ultrasonic high pressure driving circuit；Regulate and control unit 206, for based on the end electricity detected
Pressure obtains the resonance frequency for regulating and controlling the energy converter, and regulates and controls the energy converter based on the resonance frequency.
Further, based on the regulation device 200 of ultrasonic screening system further include: second detection unit 208, for examining
Survey whether the resonance frequency drifts about；Control unit 210, for controlling when determining the resonance frequency shifts
The high-power constant-current supply is to the multiple and different frequency points of ultrasonic high pressure driving circuit nonlinear object, the multiple difference
Frequency point and the resonance frequency are adjoining；Processing unit 212, for detecting the ultrasonic high pressure driving circuit the multiple
End voltage change trend under different frequent points, to search the target for keeping terminal voltage value minimum frequency from the multiple different frequent points
Point.
In the technical scheme, it is contemplated that the variation of temperature can make energy converter resonance frequency shifts, so passing through control
Make to the multiple and different frequency points of ultrasonic high pressure driving circuit nonlinear object, and detect ultrasonic high pressure driving circuit it is multiple not
With the end voltage change trend under frequency point, to search the minimum target frequency point of terminal voltage value of sening as an envoy to, target frequency point is most preferably may be used
Using frequency point, ultrasonic wave output is made to reach best power.
The technical scheme of the present invention has been explained in detail above with reference to the attached drawings, and technical solution of the present invention proposes a kind of new
Based on the regulation and control scheme of ultrasonic screening system, the ultrasonic screening efficiency of system can be effectively improved.
It is merely a preferred embodiment of the present invention, is not intended to restrict the invention, for the technology of this field described in upper
For personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of regulation method based on ultrasonic screening system, which is characterized in that the ultrasonic screening system includes transducing
Device, rack and silk screen, screen(ing) machine and the ultrasonic high pressure driving circuit for driving the energy converter, it is described to be sieved based on ultrasonic wave
The regulation method of subsystem, comprising:
Frequency signal needed for inputting the ultrasonic screening system to the ultrasonic high pressure driving circuit, wherein described super
Sound wave high-voltage drive is powered using high-power constant-current supply；
Detect the end voltage of the ultrasonic high pressure driving circuit；
Based on the end voltage detected, the resonance frequency for regulating and controlling the energy converter is obtained, and is based on the resonance
Frequency regulates and controls the energy converter.
2. the regulation method according to claim 1 based on ultrasonic screening system, which is characterized in that further include:
Detect whether the resonance frequency drifts about；
When determining the resonance frequency shifts, the high-power constant-current supply is controlled to the ultrasonic high pressure and drives electricity
The multiple and different frequency points of road nonlinear object, the multiple different frequent points and the resonance frequency are adjoining；
End voltage change trend of the ultrasonic high pressure driving circuit under the multiple different frequent points is detected, with from described more
The target frequency point for keeping terminal voltage value minimum is searched in a different frequent points.
3. the regulation method according to claim 1 based on ultrasonic screening system, which is characterized in that the frequency signal
It is synthesized by DDS.
4. a kind of regulation device based on ultrasonic screening system, which is characterized in that the ultrasonic screening system includes transducing
Device, rack and silk screen, screen(ing) machine and the ultrasonic high pressure driving circuit for driving the energy converter, it is described to be sieved based on ultrasonic wave
The regulation device of subsystem, comprising:
Output unit is believed for frequency needed for inputting the ultrasonic screening system to the ultrasonic high pressure driving circuit
Number, wherein the ultrasonic high pressure driver is powered using high-power constant-current supply；
First detection unit, for detecting the end voltage of the ultrasonic high pressure driving circuit；
Regulate and control unit, for obtaining the resonance frequency for regulating and controlling the energy converter based on the end voltage detected, and
Regulate and control the energy converter based on the resonance frequency.
5. the regulation device according to claim 4 based on ultrasonic screening system, which is characterized in that further include:
Second detection unit, for detecting whether the resonance frequency drifts about；
Control unit surpasses for when determining the resonance frequency shifts, controlling the high-power constant-current supply to described
The multiple and different frequency points of sound wave high-voltage driving circuit nonlinear object, the multiple different frequent points and the resonance frequency are adjoining；
Processing unit becomes for detecting end voltage change of the ultrasonic high pressure driving circuit under the multiple different frequent points
Gesture, to search the target frequency point for keeping terminal voltage value minimum from the multiple different frequent points.
6. the regulation device according to claim 4 based on ultrasonic screening system, which is characterized in that the frequency signal
It is synthesized by DDS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811616932.3A CN109731781A (en) | 2018-12-28 | 2018-12-28 | Regulation method and regulation device based on ultrasonic screening system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811616932.3A CN109731781A (en) | 2018-12-28 | 2018-12-28 | Regulation method and regulation device based on ultrasonic screening system |
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| CN109731781A true CN109731781A (en) | 2019-05-10 |
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| CN201811616932.3A Pending CN109731781A (en) | 2018-12-28 | 2018-12-28 | Regulation method and regulation device based on ultrasonic screening system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110496779A (en) * | 2019-08-20 | 2019-11-26 | 河南科技学院 | Ultrasound screening energy converter resonance frequency locks and real-time correcting method and ultrasound screening energy converter power circuit certainly |
| CN114217647A (en) * | 2021-12-16 | 2022-03-22 | 珠海格力电器股份有限公司 | Control method and device of ultrasonic transducer and ultrasonic device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110496779A (en) * | 2019-08-20 | 2019-11-26 | 河南科技学院 | Ultrasound screening energy converter resonance frequency locks and real-time correcting method and ultrasound screening energy converter power circuit certainly |
| CN110496779B (en) * | 2019-08-20 | 2022-07-15 | 河南科技学院 | Ultrasonic screening transducer resonant frequency self-locking and real-time correction method and ultrasonic screening transducer power supply circuit |
| CN114217647A (en) * | 2021-12-16 | 2022-03-22 | 珠海格力电器股份有限公司 | Control method and device of ultrasonic transducer and ultrasonic device |
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Application publication date: 20190510 |