CN103138232A - Ultrasonic nebulizer water shortage protection circuit - Google Patents
Ultrasonic nebulizer water shortage protection circuit Download PDFInfo
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- CN103138232A CN103138232A CN2011103944961A CN201110394496A CN103138232A CN 103138232 A CN103138232 A CN 103138232A CN 2011103944961 A CN2011103944961 A CN 2011103944961A CN 201110394496 A CN201110394496 A CN 201110394496A CN 103138232 A CN103138232 A CN 103138232A
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Abstract
The invention discloses an ultrasonic nebulizer water shortage protection circuit and belongs to the ultrasonic atomization field. The ultrasonic nebulizer water shortage protection circuit comprises an ultrasonic atomization transduction sheet, an inductor, a metal oxide semiconductor (MOS) tube, a capacitor, a resistor and a diode, wherein one end of the transduction sheet is connected with a power source, the other end of the transduction sheet is connected with the inductor, a positive electrode of the power source is connected with the inductor, a drain electrode of the MOS tube is connected with the inductor, a source electrode of the MOS tube is connected with the resistor, and a rectifying circuit is in parallel connection with the resistor and comprises the capacitor, the resistor and the diode. The ultrasonic nebulizer water shortage protection circuit is simple, practical, high in sensitivity and capable of effectively preventing an ultrasonic nebulizer from working in a non-liquid state.
Description
Technical field
A kind of ultrasonic atomization excessive low water level protection of the present invention circuit belongs to the ultrasonic atomization field, particularly relates to the excessive low water level protection circuit that uses on a kind of ultrasonic ultrasonic delay line memory.
Background technology
Be used for humidification, perfuming, sterilization or ornamental supersonic atomizer in daily life, the ultrasonic wave that the liquid that is contained in liquid container can be produced by supersonic generator is the atomization of liquid, thereby realizes its atomizing functions.Ultrasonic atomizing transduction piece is having under the state of liquid and can work, but can damage ultrasonic atomizing transduction piece when working under the state of no liquid.
Existing water shortage protection method generally adopts the method for magnetic reed tube to respond to the height of water level, and cost is high, complex structure.
Summary of the invention
The object of the invention is to avoid the deficiencies in the prior art part, and provide a kind of cost low, highly sensitive, can effectively prevent a kind of ultrasonic ultrasonic delay line memory excessive low water level protection circuit that ultrasonic ultrasonic delay line memory is worked under the no liquid state.
the objective of the invention is to reach by following measures, through experimental studies have found that, equal or during near the resonance frequency of ultrasonic atomizing transduction piece in the frequency of the pulse signal voltage that inputs to the metal-oxide-semiconductor grid, voltage signal is through the amplification of metal-oxide-semiconductor and inductance, and the driving voltage waveform that produces a high frequency and high pressure drives ultrasonic atomizing transduction piece work, when circuit is worked under the condition of same voltage and same current value, flow through the pulse peak current of resistance than there being the pulse peak current that flows through resistance under the condition of liquid large during no liquid on ultrasonic atomizing transduction piece, and form the voltage signal of equal proportion on resistance, voltage signal obtains d. c. voltage signal by rectification, when d. c. voltage signal during higher than a certain value, no liquid on ultrasonic atomizing transduction piece, to metal-oxide-semiconductor input low voltage signal, atomizer is quit work.
A kind of ultrasonic ultrasonic delay line memory excessive low water level protection circuit; at the pulse signal that inputs to the metal-oxide-semiconductor grid; voltage signal is through the amplification of metal-oxide-semiconductor and inductance; form voltage signal on resistance; voltage signal obtains d. c. voltage signal by rectification; during higher than a certain value, to metal-oxide-semiconductor input low voltage signal, atomizer is quit work when d. c. voltage signal.
A kind of ultrasonic ultrasonic delay line memory excessive low water level protection circuit comprises by ultrasonic atomizing transduction piece, inductance, metal-oxide-semiconductor, electric capacity, resistance and diode and forming; transduction piece one end is connected with power supply; the transduction piece other end is connected with inductance; positive source is connected with inductance; the drain electrode of the metal-oxide-semiconductor inductance that is connected; the source electrode of the metal-oxide-semiconductor resistance that is connected, shunt rectifier circuit on resistance, rectification circuit comprise that electric capacity, resistance and diode form.
Circuit of the present invention is simple, practical, and is highly sensitive, prevents that effectively ultrasonic ultrasonic delay line memory from working under the no liquid state.
Description of drawings
Accompanying drawing 1 is the circuit diagram of patent of the present invention.
Accompanying drawing 2 is a kind of inductance T1 schematic diagrames of patent of the present invention.
Accompanying drawing 3 is a kind of inductance T1 schematic diagrames of patent of the present invention.
Accompanying drawing 4 is a kind of inductance T1 schematic diagrames of patent of the present invention.
Accompanying drawing 5 is a kind of inductance T1 schematic diagrames of patent of the present invention.
Embodiment
Below in conjunction with drawings and Examples, patent of the present invention is further illustrated.
as shown in Figure 1, a kind of ultrasonic ultrasonic delay line memory excessive low water level protection of the present invention circuit comprises ultrasonic atomizing transduction piece Y1, inductance T1, metal-oxide-semiconductor Q1, capacitor C 1, resistance R 1, resistance R 2 and diode D1 form, transduction piece one end is connected with power supply, 1 pin of inductance T1 is connected with positive source, the transduction piece other end is connected with 2 pin of inductance T1, 3 pin of inductance T1 are connected with the drain electrode of metal-oxide-semiconductor, resistance R 1 one ends are connected with the source electrode of metal-oxide-semiconductor, resistance R 1 other end ground connection, the positive pole of diode is connected with the drain electrode of metal-oxide-semiconductor, the negative pole of diode is connected with an end of capacitor C 1 and resistance R 2, capacitor C 1 is in parallel with resistance R 2, the other end ground connection of capacitor C 1 and resistance R 2.the frequency that control circuit inputs to the pulse signal voltage V1 of metal-oxide-semiconductor grid equals or during near the resonance frequency of ultrasonic atomizing transduction piece, voltage signal V1 drives ultrasonic atomizing transduction piece work through the amplification of metal-oxide-semiconductor and inductance T1 and the driving voltage waveform that produces a high frequency and high pressure, when circuit is worked under the condition of same voltage and same current value, flow through the pulse peak current of resistance R 1 than there being the pulse peak current that flows through resistance R 1 under the condition of liquid large during no liquid on ultrasonic atomizing transduction piece, and form the voltage signal of equal proportion on resistance R 1, this voltage signal is by diode D1 and C1, the rectification of R2 provides the d. c. voltage signal of no liquid V2 on a ultrasonic atomizing transduction piece, when the voltage signal that forms on resistance R 1 during no liquid on ultrasonic atomizing transduction piece by diode D1 and C1, the d. c. voltage signal V2 of the rectification of R2 can be higher than a certain value, when d. c. voltage signal V2 voltage during higher than a certain value, to metal-oxide-semiconductor input low voltage signal, atomizer just quits work.
As shown in Figure 2, inductance T1 is an inductance, and an end is 1 pin of T1, and the other end is 2,3 pin of T1.
As shown in Figure 3, inductance T1 is a mutual inductance, and an end is 1 pin of T1, and the other end is 2 of T1, and the SMIS tap is 2 pin.
As shown in Figure 4, inductance T1 is a mutual inductance, and an end is 1 pin of T1, and the other end is 3 of T1, and the SMIS tap is 3 pin.
As shown in Figure 5, inductance T1 is a mutual inductance transformer, the two ends of an inductance of inductance transformer are respectively 1 pin and 3 pin of inductance T1, two ends one end of an inductance of inductance transformer is 3 pin of inductance T1, another termination flows level always, and the ground that can be power supply can be also the positive pole of power supply.
Claims (3)
1. ultrasonic atomizing transduction piece excessive low water level protection circuit; it is characterized in that at the pulse signal that inputs to the metal-oxide-semiconductor grid; voltage signal is through the amplification of metal-oxide-semiconductor and inductance; form voltage signal on resistance; voltage signal obtains d. c. voltage signal by rectification; when d. c. voltage signal during higher than a certain value, to metal-oxide-semiconductor input low voltage signal.
2. a kind of ultrasonic atomizing transduction piece excessive low water level protection circuit described according to right 1; it is characterized in that being formed by ultrasonic atomizing transduction piece, inductance, metal-oxide-semiconductor, electric capacity, resistance and diode; transduction piece one end is connected with power supply; the transduction piece other end is connected with inductance; the positive source inductance that is connected, the drain electrode of the metal-oxide-semiconductor inductance that is connected, the source electrode of the metal-oxide-semiconductor resistance that is connected; shunt rectifier circuit on resistance, rectification circuit comprise that electric capacity, resistance and diode form.
3. a kind of ultrasonic atomizing transduction piece excessive low water level protection circuit described according to right 1, it is characterized in that comprising ultrasonic atomizing transduction piece Y1, inductance T1, metal-oxide-semiconductor Q1, capacitor C 1, resistance R 1, resistance R 2 and diode D1 form, transduction piece one end is connected with positive source, 1 pin of inductance T1 is connected with positive source, the transduction piece other end is connected with 2 pin of inductance T1, 3 pin of inductance T1 are connected with the drain electrode of metal-oxide-semiconductor, resistance R 1 one ends are connected with the source electrode of metal-oxide-semiconductor, resistance R 1 other end ground connection, the positive pole of diode is connected with the drain electrode of metal-oxide-semiconductor, the negative pole of diode is connected with an end of capacitor C 1 and resistance R 2, capacitor C 1 is in parallel with resistance R 2, the other end ground connection of capacitor C 1 and resistance R 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103944961A CN103138232A (en) | 2011-12-02 | 2011-12-02 | Ultrasonic nebulizer water shortage protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103944961A CN103138232A (en) | 2011-12-02 | 2011-12-02 | Ultrasonic nebulizer water shortage protection circuit |
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| Publication Number | Publication Date |
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| CN103138232A true CN103138232A (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011103944961A Pending CN103138232A (en) | 2011-12-02 | 2011-12-02 | Ultrasonic nebulizer water shortage protection circuit |
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| CN (1) | CN103138232A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108940704A (en) * | 2018-09-12 | 2018-12-07 | 河北华旭达医疗器械科技有限公司 | Ultrasonic ultrasonic delay line memory lacks liquid protection circuit and scarce liquid control method |
| CN110262353A (en) * | 2019-07-03 | 2019-09-20 | 佛山恒乐科技有限公司 | A kind of scarce liquid guard method of ultrasonic ultrasonic delay line memory |
| CN111438026A (en) * | 2020-03-25 | 2020-07-24 | 广州厚达电子科技有限公司 | Driving method and driving circuit of ultrasonic atomizer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09261848A (en) * | 1996-03-22 | 1997-10-03 | Meidensha Corp | Detecting circuit of suspension of cooling water supply of emergency diesel power generating installation |
| CN101380617A (en) * | 2008-10-24 | 2009-03-11 | 佛山市南海科日超声电子有限公司 | Water shortage protection method of ultrasonic nobulizer |
| CN101890403A (en) * | 2009-05-22 | 2010-11-24 | 余明月 | Wireless power supply atomizer |
| CN201823668U (en) * | 2010-09-21 | 2011-05-11 | 周霆 | Ultrasonic atomizing transduction piece |
| CN201846058U (en) * | 2010-09-29 | 2011-05-25 | 厦门振泰成科技有限公司 | Over-voltage/over-current protecting circuit |
-
2011
- 2011-12-02 CN CN2011103944961A patent/CN103138232A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09261848A (en) * | 1996-03-22 | 1997-10-03 | Meidensha Corp | Detecting circuit of suspension of cooling water supply of emergency diesel power generating installation |
| CN101380617A (en) * | 2008-10-24 | 2009-03-11 | 佛山市南海科日超声电子有限公司 | Water shortage protection method of ultrasonic nobulizer |
| CN101890403A (en) * | 2009-05-22 | 2010-11-24 | 余明月 | Wireless power supply atomizer |
| CN201823668U (en) * | 2010-09-21 | 2011-05-11 | 周霆 | Ultrasonic atomizing transduction piece |
| CN201846058U (en) * | 2010-09-29 | 2011-05-25 | 厦门振泰成科技有限公司 | Over-voltage/over-current protecting circuit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108940704A (en) * | 2018-09-12 | 2018-12-07 | 河北华旭达医疗器械科技有限公司 | Ultrasonic ultrasonic delay line memory lacks liquid protection circuit and scarce liquid control method |
| CN110262353A (en) * | 2019-07-03 | 2019-09-20 | 佛山恒乐科技有限公司 | A kind of scarce liquid guard method of ultrasonic ultrasonic delay line memory |
| CN111438026A (en) * | 2020-03-25 | 2020-07-24 | 广州厚达电子科技有限公司 | Driving method and driving circuit of ultrasonic atomizer |
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Application publication date: 20130605 |