CN211536041U - Ultrasonic atomizer humidification control circuit - Google Patents
Ultrasonic atomizer humidification control circuit Download PDFInfo
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- CN211536041U CN211536041U CN201922144326.2U CN201922144326U CN211536041U CN 211536041 U CN211536041 U CN 211536041U CN 201922144326 U CN201922144326 U CN 201922144326U CN 211536041 U CN211536041 U CN 211536041U
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Abstract
The utility model relates to an atomizer field discloses an ultrasonic atomization ware humidification control circuit for solve current ultrasonic atomization ware and lack the problem of preventing the protection of lack of water. The atomization piece driving control circuit comprises a microcontroller and an atomization piece driving control circuit, wherein a signal input end of the atomization piece driving control circuit is coupled to a signal output end of the microcontroller; the atomization sheet drive control circuit comprises a totem-pole drive circuit, a field-effect tube and a sampling resistor, wherein the sampling resistor is used for acquiring a current signal of the atomizer, the signal input end of the totem-pole drive circuit is connected with the signal output end of the microcontroller and used for receiving a level signal output by the microcontroller, the grid electrode of the field-effect tube is connected with the signal output end of the totem-pole drive circuit, and the source electrode of the field-effect tube is connected with the sampling end of the microcontroller and one end of the sampling resistor. Implement the beneficial effects of the utility model are that when the atomizer was in the state of lacking water, microcontroller can export the low level and close field effect transistor, and protection atomizing piece prevents that the atomizing piece from being burnt out.
Description
Technical Field
The utility model relates to an atomizer field, more specifically say, relate to an ultrasonic nebulizer humidification control circuit.
Background
In the current atomization technology, the ultrasonic atomization technology is widely applied to the treatment of various respiratory diseases, such as diseases of the trachea, the bronchus, the alveoli and the chest cavity, such as cold, fever, cough, asthma, sore throat, pharyngitis, rhinitis, bronchitis, pneumoconiosis and the like. The aerosol inhalation therapy is an important and effective treatment method in the treatment method of respiratory system diseases, the aerosol inhaler is adopted to atomize the liquid medicine into tiny particles, and the medicine enters the respiratory tract and the lung for deposition in a respiratory inhalation mode, so that the aim of painless, rapid and effective treatment can be achieved. In addition, a large amount of negative ions are released in the atomization process and generate electrostatic reaction with smoke, dust and the like floating in the air, so that the negative ions are precipitated, and meanwhile, harmful substances such as formaldehyde, carbon monoxide, bacteria and the like can be effectively removed, so that the air is purified, and the occurrence of diseases is reduced.
The ultrasonic atomization technology utilizes electronic high-frequency oscillation to break up the liquid water molecule structure through the high-frequency resonance of the ceramic atomization sheet to generate naturally elegant water mist without heating or adding any chemical reagent. The ultrasonic atomization sheet is a piezoelectric ceramic component for atomization and humidification, and the physical model of the ultrasonic atomization sheet is an emission type piezoelectric ceramic transducer.
In the prior art, the problem of water shortage prevention protection needs to be considered in the ultrasonic atomizer.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of preventing the protection of lack of water of prior art, provide an ultrasonic atomization ware humidification control circuit, stop work when reaching the ultrasonic atomization ware lack of water to reach the purpose of protection atomizing piece.
The utility model provides a technical scheme that its technical problem adopted is: a humidifying control circuit of an ultrasonic atomizer is constructed, which comprises a microcontroller and an atomizing sheet driving control circuit,
the signal input end of the atomization plate driving control circuit is coupled with the signal output end of the microcontroller; wherein the content of the first and second substances,
the atomization sheet drive control circuit comprises a totem-pole drive circuit, a field effect tube and a sampling resistor;
the sampling resistor is used for acquiring a current signal of the atomizer;
the signal input end of the totem-pole driving circuit is connected with the signal output end of the microcontroller and is used for receiving the level signal output by the microcontroller;
the grid electrode of the field effect tube is connected with the signal output end of the totem-pole drive circuit;
the source electrode of the field effect tube is connected with the sampling end of the microcontroller and one end of the sampling resistor together;
the sampling resistor feeds the current signal back to the microcontroller and compares the current signal with a preset value of the microcontroller;
if the current signal is larger than the preset value, the microcontroller outputs a low level, and the low level is used for closing the field effect tube so as to stop the work of the atomizer.
Furthermore, the totem-pole driving circuit comprises a first triode and a second triode;
the base electrodes of the first triode and the second triode are connected with the signal output end of the microcontroller;
the emitting electrodes of the first triode and the second triode are connected with the grid electrode of the field effect transistor;
the collector of the first triode is connected with the negative electrode of the atomization sheet drive control circuit;
and the collector of the second triode is connected with the common end.
Furthermore, the humidification control circuit of the ultrasonic atomizer further comprises a first inductor and a crystal oscillator, wherein one end of the first inductor and one end of the crystal oscillator are coupled to the drain electrode of the field effect tube;
the other end of the first inductor is connected with a power supply end;
the other end of the crystal oscillator is connected with the common end.
Preferably, the first triode is an NPN type triode and the second triode is a PNP type triode.
Furthermore, the humidifying control circuit of the ultrasonic atomizer further comprises an atomizing humidifier fan control circuit, and the signal input end of the atomizing humidifier fan control circuit is connected with the signal output end of the microcontroller.
Furthermore, the fan control circuit of the atomizing humidifier comprises a third triode, a fan and a first diode;
the base electrode of the third triode is connected with the signal output end of the microcontroller;
the collector of the third triode is connected with one end of the fan and the anode of the first diode together;
the emitter of the third triode is connected with the common end;
the other end of the fan and the cathode of the first diode are connected with a power supply end.
Further, the field effect transistor is an N-channel MOS transistor.
Implement the utility model discloses an ultrasonic nebulizer humidification control circuit has following beneficial effect: ultrasonic atomization ware humidification control circuit has the water shortage and prevents dry combustion method protect function, and when the atomizer water shortage, the electric current increase of field effect transistor, sampling resistance feeds back current signal to microcontroller, compares with microcontroller's default, if current signal is greater than the default, then microcontroller output low level, and the low level is used for closing field effect transistor to make atomizer stop work, protection atomizing piece prevents that the atomizing piece from being burnt out.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
FIG. 1 is a schematic diagram of a driving control circuit for an atomizing plate;
fig. 2 is a schematic diagram of an atomizing fan control circuit.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The part numbers themselves, e.g., "first", "second", etc., are used herein only to distinguish the objects described, and do not have a sequential or technical meaning. The directional and positional terms are used herein for convenience in describing the embodiments of the present invention only and are not intended to indicate that a particular orientation of a component is required.
The utility model relates to an ultrasonic nebulizer humidification control circuit, include: microcontroller MCU, atomizing piece drive control circuit, atomizing fan control circuit.
The microcontroller MCU is used for receiving signals and making corresponding instructions.
Fig. 1 is a schematic diagram of an embodiment of an atomization plate driving control circuit of the present invention.
As shown in fig. 1, the signal input terminal of the atomization plate driving control circuit according to an embodiment of the present invention is coupled to the signal output terminal of the microcontroller MCU, and includes a totem pole driving circuit, a field effect transistor VT1, and a sampling resistor R5.
The sampling resistor R5 is used to obtain the current signal of the atomizer.
The signal input end of the totem-pole driving circuit is connected with the signal output end of the microcontroller MCU, and is used for receiving a level signal output by the microcontroller MCU, and the totem-pole driving circuit comprises a first triode Q1 and a second triode Q2;
furthermore, the base of the first triode Q1 and the base of the second triode Q2 are connected with the signal output end of the microcontroller MCU through a first resistor R1, the emitter of the first triode Q1 and the emitter of the second triode Q2 are connected with the gate of the field effect transistor VT1 through a third resistor R3, the collector of the first triode Q1 is connected with the positive electrode of the circuit, and the collector of the second triode Q2 is connected with the common terminal.
Preferably, the first transistor Q1 is an NPN type transistor, and the second transistor Q2 is a PNP type transistor.
The grid of the field effect transistor VT1 is connected with the signal output end of the totem pole drive circuit.
The source electrode of the field effect transistor VT1 is commonly connected with the sampling end of the microcontroller MCU and one end of the sampling resistor R5, and the sampling resistor R5, the second resistor R2 and the first resistor R1 are connected in sequence.
The other end of the first resistor R1 is connected with the microcontroller MCU, the sampling resistor R5 acquires a current signal of the atomizer and then feeds the current signal back to the microprocessor MCU, the current signal is compared with a preset value of the microprocessor MCU, if the current signal is larger than the preset value, the microcontroller MCU outputs a low level, and the low level is used for closing the field effect transistor VT1 so that the atomizer stops working.
In this embodiment, the low level is used to turn off the fet VT1, i.e., when the microprocessor MCU outputs the low level to the totem pole driving circuit to turn off the fet VT1, it means that the atomizer is in a water-deficient state.
Furthermore, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6 and a seventh capacitor C7 are connected in parallel and then connected to two ends of the sampling resistor R5.
The drain of the field effect transistor VT1 is coupled to the first inductor L1 and the crystal oscillator Y1, the other end of the first inductor L1 is connected to the power source, and the crystal oscillator Y1 is connected in parallel to the first capacitor C1.
One end of the crystal oscillator Y1 and one end of the first capacitor C1 are commonly connected with the drain of the field effect transistor VT1, and the other end of the crystal oscillator Y1 and the other end of the first capacitor C1 are commonly connected with the common end.
The second capacitor C2 is disposed between the crystal oscillator Y1 and the first inductor L1, and the oscillating boosted voltage passes through the first capacitor C1 and the crystal oscillator Y1 to the common terminal.
Furthermore, one end of a fourth resistor R4 is connected to the gate of the field effect transistor VT1, the other end of the fourth resistor R4 is connected to the common terminal, and a third capacitor C3 is connected in parallel with the fourth resistor R4.
Preferably, the field effect transistor is an N-channel MOS transistor.
When the atomizer lacks water, the electric current of field effect transistor VT1 increases, and sampling resistor R5 feedback to microprocessor MCU after obtaining the current signal of atomizer, and the current signal compares with microprocessor MCU's default, if the current signal is greater than the default, then microcontroller MCU output low level, and the low level is used for closing field effect transistor VT1 to make the atomizer stop work, the protection atomizing piece prevents that the atomizing piece from being burnt out.
Fig. 2 is a schematic diagram of an atomizing fan control circuit according to an embodiment of the present invention.
As shown in fig. 2, the signal input terminal of the atomizing fan control circuit according to an embodiment of the present invention is connected to the signal output terminal of the microcontroller MCU, and includes a first diode D1, a third triode Q3 and a blower F1.
The base electrode of the third triode Q3 is connected with the signal output end of the microcontroller MCU through a sixth resistor R6;
an emitter of the third triode Q3 is connected with the common end, one end of an eighth capacitor C8 is connected with the emitter of the third triode Q3, and the other end of the eighth capacitor C8 is connected with the base of the third triode Q3;
the collector of a third triode Q3 is connected with one end of a fan F1 and the anode of a first diode D1, the other end of the fan F1 is connected with the cathode of the first diode D1, one end of a current limiting circuit formed by connecting a seventh resistor R7 and an eighth resistor R8 in parallel is connected with the other end of the fan F1, the other end of the current limiting circuit formed by connecting the seventh resistor R7 and an eighth resistor R8 in parallel is connected with a power supply end, one end of a ninth capacitor C9 is connected with one end of the fan F1, and the other end of the ninth capacitor C9 is connected with the other end of the fan F1.
Preferably, the third transistor Q3 is an NPN transistor.
The first diode D1 is a protection diode to prevent the third triode Q3 from being damaged by the back electromotive force generated on the fan coil when the fan is started or stopped; the third triode Q3 is a switching tube for starting or closing the fan, the base electrode of the third triode Q3 is connected with the microcontroller MCU through a sixth resistor R6 and is controlled by the microcontroller MCU, and the fan is started simultaneously when the atomizer is started.
While the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made by one skilled in the art without departing from the spirit and scope of the present invention.
Claims (7)
1. A humidification control circuit of an ultrasonic atomizer is characterized by comprising a microcontroller and an atomization sheet drive control circuit,
the signal input end of the atomization plate driving control circuit is coupled with the signal output end of the microcontroller; wherein the content of the first and second substances,
the atomization sheet drive control circuit comprises a totem-pole drive circuit, a field effect tube and a sampling resistor;
the sampling resistor is used for acquiring a current signal of the atomizer;
the signal input end of the totem-pole driving circuit is connected with the signal output end of the microcontroller and is used for receiving the level signal output by the microcontroller;
the grid electrode of the field effect tube is connected with the signal output end of the totem-pole drive circuit;
the source electrode of the field effect tube is connected with the sampling end of the microcontroller and one end of the sampling resistor together;
the sampling resistor feeds the current signal back to the microcontroller and compares the current signal with a preset value of the microcontroller;
if the current signal is larger than the preset value, the microcontroller outputs a low level, and the low level is used for closing the field effect tube so as to stop the atomizer.
2. The ultrasonic atomizer humidification control circuit of claim 1,
the totem-pole driving circuit comprises a first triode and a second triode,
the base electrodes of the first triode and the second triode are connected with the signal output end of the microcontroller;
the emitting electrodes of the first triode and the second triode are connected with the grid electrode of the field effect transistor;
the collector of the first triode is connected with the negative electrode of the atomization sheet drive control circuit;
and the collector of the second triode is connected with the common end.
3. The ultrasonic atomizer humidification control circuit of claim 2,
the field effect transistor further comprises a first inductor and a crystal oscillator, wherein one end of the first inductor and one end of the crystal oscillator are coupled to the drain electrode of the field effect transistor;
the other end of the first inductor is connected with a power supply end;
the other end of the crystal oscillator is connected with the public end.
4. The ultrasonic atomizer humidification control circuit of claim 3,
the first triode is an NPN triode, and the second triode is a PNP triode.
5. The ultrasonic atomizer humidification control circuit of claim 1,
still include atomizing humidifier fan control circuit, atomizing humidifier fan control circuit's signal input part with microcontroller's signal output part is connected.
6. The ultrasonic atomizer humidification control circuit of claim 5,
the fan control circuit of the atomization humidifier comprises a third triode, a fan and a first diode;
the base electrode of the third triode is connected with the signal output end of the microcontroller;
a collector electrode of the third triode is connected with one end of the fan and an anode of the first diode together;
an emitter of the third triode is connected with the common end;
the other end of the fan and the cathode of the first diode are connected with a power supply end.
7. The ultrasonic atomizer humidification control circuit of claim 6,
the field effect transistor is an N-channel MOS transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922144326.2U CN211536041U (en) | 2019-12-02 | 2019-12-02 | Ultrasonic atomizer humidification control circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922144326.2U CN211536041U (en) | 2019-12-02 | 2019-12-02 | Ultrasonic atomizer humidification control circuit |
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| CN211536041U true CN211536041U (en) | 2020-09-22 |
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| CN201922144326.2U Active CN211536041U (en) | 2019-12-02 | 2019-12-02 | Ultrasonic atomizer humidification control circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114877507A (en) * | 2022-05-18 | 2022-08-09 | 深圳市太美亚电子科技有限公司 | Atomization piece dry-burning protection circuit, humidification device and dry-burning protection method |
| CN114877507B (en) * | 2022-05-18 | 2024-05-10 | 深圳市太美亚电子科技有限公司 | Atomizing sheet dry-combustion protection circuit, humidifying device and dry-combustion protection method |
-
2019
- 2019-12-02 CN CN201922144326.2U patent/CN211536041U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114877507A (en) * | 2022-05-18 | 2022-08-09 | 深圳市太美亚电子科技有限公司 | Atomization piece dry-burning protection circuit, humidification device and dry-burning protection method |
| CN114877507B (en) * | 2022-05-18 | 2024-05-10 | 深圳市太美亚电子科技有限公司 | Atomizing sheet dry-combustion protection circuit, humidifying device and dry-combustion protection method |
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