CN218459952U - Automatic frequency sweeping circuit for atomizing sheet - Google Patents
Automatic frequency sweeping circuit for atomizing sheet Download PDFInfo
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- CN218459952U CN218459952U CN202222789607.5U CN202222789607U CN218459952U CN 218459952 U CN218459952 U CN 218459952U CN 202222789607 U CN202222789607 U CN 202222789607U CN 218459952 U CN218459952 U CN 218459952U
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Abstract
The embodiment of the utility model discloses an automatic frequency sweeping circuit for an atomizing sheet, which comprises a main control chip, and a booster circuit, an atomizing sheet driving circuit and a detection circuit which are connected with the main control chip; the booster circuit is used for realizing a boosting function so as to meet a voltage value required by the atomization piece, the atomization piece driving circuit is used for generating a voltage waveform required by the driving of the atomization piece so as to realize the driving of the atomization piece, and the detection circuit detects the voltage change of the booster circuit in the frequency sweeping process. The utility model discloses a switch atomizing piece drive frequency one by one, detect and compare the corresponding boost circuit voltage size of each frequency, sweep the frequency in-process, the frequency that minimum voltage corresponds is the best operating frequency of atomizing piece to realized the automatic frequency sweep function of atomizing piece, circuit structure is simple, and realizes easily, and then reduced the occupation space of circuit board.
Description
Technical Field
The utility model relates to an atomizer technical field, the more specifically automatic frequency sweep circuit of atomizing piece that says so.
Background
At present, the atomizer products on the market are various in types and wide in application. However, in the existing atomizer product, the current of the atomizing sheet needs to be detected through complex circuits such as a comparator operational amplifier and the like to realize the automatic frequency sweeping function, so that the circuit is complex and occupies a large space of a circuit board.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's is not enough, provides an automatic frequency sweep circuit of atomizing piece, aims at realizing the automatic frequency sweep function of atomizing piece with comparatively simple circuit to reduce the occupation space of circuit board.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an automatic frequency sweeping circuit for an atomizing sheet comprises a main control chip, and a booster circuit, an atomizing sheet driving circuit and a detection circuit which are connected with the main control chip; the voltage boosting circuit is used for achieving a voltage boosting function so as to meet a voltage value required by the atomization piece, the atomization piece driving circuit is used for generating a voltage waveform required by the driving of the atomization piece so as to achieve driving of the atomization piece, and the detection circuit detects the voltage change of the voltage boosting circuit in a frequency sweeping process.
The further technical scheme is as follows: the booster circuit comprises an inductor L1, a resistor R2, a resistor R4, an MOS (metal oxide semiconductor) tube Q1, a diode D1 and a capacitor C2; one end of the inductor L1 is connected with a power supply voltage, the other end of the inductor L1 is connected with an anode of the diode D1, a drain electrode of the MOS tube Q1 is connected between the other end of the inductor L1 and the anode of the diode D1, a source electrode of the MOS tube Q1 is grounded, a grid electrode of the MOS tube Q1 is connected with one end of the resistor R2, the other end of the resistor R2 is connected with the main control chip, one end of the resistor R4 is connected between one end of the resistor R2 and the grid electrode of the MOS tube Q1, and the other end of the resistor R4 is grounded; one end of the capacitor C2 is connected with the cathode of the diode D1, and the other end of the capacitor C2 is grounded.
The further technical scheme is as follows: the other end of the resistor R2 is connected with a P23 pin of the main control chip, and the boost circuit adjusts the PWM output of the P23 pin of the main control chip to realize the boost function.
The further technical scheme is as follows: and the PWM output frequency of the P23 pin of the main control chip is 20-50 kHz.
The further technical scheme is as follows: the atomization sheet driving circuit comprises an inductor L2, a resistor R3, a resistor R5 and an MOS (metal oxide semiconductor) tube Q2; inductor L2's one end with diode D1's negative pole is connected, inductor L2's the other end and the positive pole of atomizing piece are connected, MOS pipe Q2's drain electrode connect in between inductor L2's the other end and the positive pole of atomizing piece, MOS pipe Q2's source ground connection, MOS pipe Q2's grid with resistance R3's one end is connected, resistance R3's the other end with main control chip connects, resistance R5's one end connect in resistance R3's one end with between MOS pipe Q2's the grid, resistance R5's the other end ground connection.
The further technical scheme is as follows: the other end of resistance R3 with main control chip's P22 pin is connected, atomizing piece drive circuit passes through the production PWM square wave of P23 pin, combines inductance L2 produces the required voltage waveform of drive atomizing piece to the realization is to the drive of atomizing piece.
The further technical scheme is as follows: the detection circuit comprises a resistor R1, a resistor R6 and a capacitor C3; one end of the resistor R1 is connected between the cathode of the diode D1 and one end of the inductor L2, the other end of the resistor R1 is connected with one end of the resistor R6, the other end of the resistor R6 is grounded, one end of the capacitor C3 is grounded, and the other end of the capacitor C3 is connected with the main control chip.
The further technical scheme is as follows: the other end of the capacitor C3 is connected with a P21 pin of the main control chip, and the detection circuit performs AD sampling through the P21 pin of the main control chip so as to detect the voltage change of the booster circuit in the frequency sweeping process.
The further technical scheme is as follows: the model adopted by the main control chip is CMS8S6990N.
Compared with the prior art, the utility model beneficial effect be: the utility model discloses a switch atomizing piece drive frequency one by one, detect and compare the corresponding boost circuit voltage size of each frequency, the frequency sweep in-process, the frequency that minimum voltage corresponds is the best operating frequency of atomizing piece to realized the automatic frequency sweep function of atomizing piece, circuit structure is simple, and realizes easily, and then has reduced the occupation space of circuit board.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are specifically exemplified below, and detailed description is provided below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.
Fig. 1 is a circuit block diagram of an automatic frequency sweeping circuit for an atomizing plate according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of an automatic frequency sweeping circuit of an atomizing plate according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a main control chip in an automatic frequency sweeping circuit of an atomizing plate according to an embodiment of the present invention.
Reference numerals
1. A boost circuit; 2. an atomization sheet drive circuit; 3. a detection circuit; 4. a main control chip; 100. atomizing sheet.
Detailed Description
The technical solution of the present invention will be described clearly and completely below with reference to specific embodiments of the present invention, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in the specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items and includes such combinations.
The embodiment of the utility model provides an automatic frequency sweeping circuit of an atomizing sheet, as shown in figure 1, comprising a main control chip 4, and a booster circuit 1, an atomizing sheet driving circuit 2 and a detection circuit 3 which are connected with the main control chip 4; the booster circuit 1 is used for realizing a boosting function so as to meet a voltage value required by the atomizing plate 100, the atomizing plate driving circuit 2 is used for generating a voltage waveform required by driving the atomizing plate 100 so as to realize driving of the atomizing plate 100, and the detection circuit 3 detects voltage change of the booster circuit 1 in a frequency sweeping process.
In an embodiment, as shown in fig. 2 and 3, the boost circuit 1 includes an inductor L1, a resistor R2, a resistor R4, a MOS transistor Q1, a diode D1, and a capacitor C2; one end of an inductor L1 is connected with a power supply voltage, the other end of the inductor L1 is connected with the anode of a diode D1, the drain electrode of an MOS tube Q1 is connected between the other end of the inductor L1 and the anode of the diode D1, the source electrode of the MOS tube Q1 is grounded, the grid electrode of the MOS tube Q1 is connected with one end of a resistor R2, the other end of the resistor R2 is connected with a main control chip, one end of a resistor R4 is connected between one end of the resistor R2 and the grid electrode of the MOS tube Q1, and the other end of the resistor R4 is grounded; one end of the capacitor C2 is connected to the cathode of the diode D1, and the other end of the capacitor C2 is grounded. The other end of the resistor R2 is connected with a pin P23 of the main control chip 4, and the booster circuit 1 adjusts the PWM output of the pin P23 of the main control chip 4 to realize a boosting function.
The PWM output frequency of the P23 pin of the main control chip 4 is generally 20kHz to 50kHz, and the PWM Duty cycle value is adjusted by a software program, so that different voltages can be boosted to meet the voltage value required by the atomizing plate 100, that is, the voltage value is derived from the wide range voltage after the booster circuit 1, and the atomizing plate 100 can be compatible with various different types.
In one embodiment, as shown in fig. 2 and 3, the atomization sheet driving circuit 2 includes an inductor L2, a resistor R3, a resistor R5, and a MOS transistor Q2; inductor L2's one end is connected with diode D1's negative pole, inductor L2's the other end and the positive pole of atomizing piece 100 are connected, MOS pipe Q2's drain electrode is connected between inductor L2's the other end and the positive pole of atomizing piece 100, MOS pipe Q2's source ground connection, MOS pipe Q2's grid and resistance R3's one end are connected, resistance R3's the other end and main control chip 4 are connected, resistance R5's one end is connected between resistance R3's one end and MOS pipe Q2's grid, resistance R5's the other end ground connection. The other end of the resistor R3 is connected with a pin P22 of the main control chip 4, the atomization sheet driving circuit 2 generates a PWM square wave through the pin P23, and generates a voltage waveform required by driving the atomization sheet 100 by combining with the inductor L2, so that the atomization sheet 100 is driven.
In one embodiment, as shown in fig. 2 and 3, the detection circuit 3 includes a resistor R1, a resistor R6, and a capacitor C3; one end of the resistor R1 is connected between the cathode of the diode D1 and one end of the inductor L2, the other end of the resistor R1 is connected with one end of the resistor R6, the other end of the resistor R6 is grounded, one end of the capacitor C3 is grounded, and the other end of the capacitor C3 is connected with the main control chip 4. The other end of the capacitor C3 is connected to a pin P21 of the main control chip 4, and the detection circuit 3 performs AD sampling through the pin P21 of the main control chip 4 to detect the voltage change of the voltage boosting circuit 1 during the frequency sweeping process.
In this embodiment, the model adopted by the main control chip 4 is CMS8S6990N. In other embodiments, the main control chip 4 may adopt a chip with similar signal to CMS8S6990N.
The realization process of the automatic frequency sweeping function is as follows: the frequency of the selected atomizing plate 100 is 108 +/-5 kHz, and in the automatic frequency sweeping process, the P23 pin of the booster circuit 1 is controlled, and the PWM frequency and the duty ratio are fixed. The PWM output frequency of the P22 pins is switched one by one from 100kHz to 116kHz, the duty ratio is fixed to 50%, AD sampling is carried out through the P21 pins of the chip under each frequency, the voltage of the booster circuit 1 corresponding to each frequency is detected and compared, and when the minimum voltage is in the frequency sweeping process, the atomization effect is best, namely the frequency corresponding to the minimum voltage is the optimal working frequency of the atomization plate 100. After the frequency sweeping is finished, the atomization plate 100 is switched to the optimal working frequency to normally drive, so that the automatic frequency sweeping function of the atomization plate 100 is realized.
The utility model discloses a switch atomizing piece drive frequency one by one, detect and compare the corresponding boost circuit voltage size of each frequency, the frequency sweep in-process, the frequency that minimum voltage corresponds is the best operating frequency of atomizing piece to realized the automatic frequency sweep function of atomizing piece, circuit structure is simple, and realizes easily, and then has reduced the occupation space of circuit board.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. An automatic frequency sweeping circuit for an atomizing sheet is characterized by comprising a main control chip, and a booster circuit, an atomizing sheet driving circuit and a detection circuit which are connected with the main control chip; boost circuit is used for realizing the boost function to satisfy the required magnitude of voltage of atomizing piece, atomizing piece drive circuit is used for producing the required voltage waveform of drive atomizing piece, in order to realize the drive to the atomizing piece, detection circuitry detects the frequency sweep in-process boost circuit's voltage variation.
2. An automatic frequency sweeping circuit for an atomizing plate as claimed in claim 1, wherein the voltage boosting circuit comprises an inductor L1, a resistor R2, a resistor R4, a MOS transistor Q1, a diode D1 and a capacitor C2; one end of the inductor L1 is connected to a power supply voltage, the other end of the inductor L1 is connected to an anode of the diode D1, a drain of the MOS transistor Q1 is connected between the other end of the inductor L1 and the anode of the diode D1, a source of the MOS transistor Q1 is grounded, a gate of the MOS transistor Q1 is connected to one end of the resistor R2, the other end of the resistor R2 is connected to the main control chip, one end of the resistor R4 is connected between one end of the resistor R2 and the gate of the MOS transistor Q1, and the other end of the resistor R4 is grounded; one end of the capacitor C2 is connected with the cathode of the diode D1, and the other end of the capacitor C2 is grounded.
3. A circuit for automatically sweeping frequency of an atomizing plate as claimed in claim 2, wherein the other end of the resistor R2 is connected to a P23 pin of the main control chip, and the boost circuit adjusts the PWM output of the P23 pin of the main control chip to realize the boost function.
4. An automatic frequency sweeping circuit for an atomizing plate as claimed in claim 3, wherein the PWM output frequency of the P23 pin of the main control chip is 20 kHz-50 kHz.
5. An automatic frequency sweeping circuit for an atomizing plate as claimed in claim 2, wherein the atomizing plate driving circuit comprises an inductor L2, a resistor R3, a resistor R5 and a MOS transistor Q2; inductor L2's one end with diode D1's negative pole is connected, inductor L2's the other end and the positive pole of atomizing piece are connected, MOS pipe Q2's drain electrode connect in between inductor L2's the other end and the positive pole of atomizing piece, MOS pipe Q2's source ground connection, MOS pipe Q2's grid with resistance R3's one end is connected, resistance R3's the other end with main control chip connects, resistance R5's one end connect in resistance R3's one end with between MOS pipe Q2's the grid, resistance R5's the other end ground connection.
6. An automatic frequency sweeping circuit for an atomizing plate as claimed in claim 5, wherein the other end of the resistor R3 is connected to a pin P22 of the main control chip, and the atomizing plate driving circuit generates a PWM square wave through the pin P23, and generates a voltage waveform required for driving the atomizing plate by combining with the inductor L2, so as to drive the atomizing plate.
7. A kind of atomization slice automatic frequency sweeping circuit according to claim 5, characterized by that, the said detection circuit includes resistance R1, resistance R6 and electric capacity C3; one end of the resistor R1 is connected between the cathode of the diode D1 and one end of the inductor L2, the other end of the resistor R1 is connected with one end of the resistor R6, the other end of the resistor R6 is grounded, one end of the capacitor C3 is grounded, and the other end of the capacitor C3 is connected with the main control chip.
8. A frequency sweeping circuit for an atomizing plate according to claim 7, wherein the other end of the capacitor C3 is connected to a P21 pin of the main control chip, and the detection circuit performs AD sampling through the P21 pin of the main control chip to detect voltage changes of the voltage boosting circuit in a frequency sweeping process.
9. A sweep frequency circuit for an atomizing plate as claimed in claim 1, wherein the model of the main control chip is CMS8S6990N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222789607.5U CN218459952U (en) | 2022-10-21 | 2022-10-21 | Automatic frequency sweeping circuit for atomizing sheet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222789607.5U CN218459952U (en) | 2022-10-21 | 2022-10-21 | Automatic frequency sweeping circuit for atomizing sheet |
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| CN218459952U true CN218459952U (en) | 2023-02-10 |
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| CN202222789607.5U Active CN218459952U (en) | 2022-10-21 | 2022-10-21 | Automatic frequency sweeping circuit for atomizing sheet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024061166A1 (en) * | 2022-09-22 | 2024-03-28 | 深圳市合元科技有限公司 | Ultrasonic atomizer, and resonant-frequency determination method based on ultrasonic atomizer |
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2022
- 2022-10-21 CN CN202222789607.5U patent/CN218459952U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024061166A1 (en) * | 2022-09-22 | 2024-03-28 | 深圳市合元科技有限公司 | Ultrasonic atomizer, and resonant-frequency determination method based on ultrasonic atomizer |
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