CN211926010U

CN211926010U - Water supplement instrument

Info

Publication number: CN211926010U
Application number: CN202020563971.8U
Authority: CN
Inventors: 瞿晗昕; 吴进坤; 唐波; 董晓勇; 向杨; 皮峰; 冉亚林; 罗鹏; 陈轲; 毛巧运; 王�义
Original assignee: Shenzhen Yingtechuang Intelligent Technology Co ltd
Current assignee: Shenzhen Yingtechuang Intelligent Technology Co ltd
Priority date: 2020-04-15
Filing date: 2020-04-15
Publication date: 2020-11-13
Anticipated expiration: 2030-04-15

Abstract

The utility model discloses a moisturizing appearance, including little the control unit, power boost circuit and atomization oscillation sampling circuit, atomization oscillation sampling circuit one end with the power boost circuit electricity is connected, the other end with little the control unit electricity is connected, power boost circuit is used for stepping up in order to satisfy the required actual voltage of atomization oscillation sampling circuit, atomization oscillation sampling circuit is used for carrying input frequency atomization oscillation and sampling extremely little the control unit carries out voltage detection. Through adjusting input frequency, carry out atomizing oscillation and sample through atomizing oscillation sampling circuit and carry to little the control unit and carry out voltage detection, realize the automatic central frequency who locks atomizing oscillation sampling circuit, directly export with central frequency after the locking is successful, atomizing oscillation sampling circuit's oscillation amplitude is the biggest this moment, and spraying effect is best, has improved atomizing volume and atomization efficiency greatly.

Description

Water supplement instrument

Technical Field

The utility model relates to an atomizing moisturizing device field, more specifically say and indicate a moisturizing appearance.

Background

The principle of the existing water replenishing device is that an atomizer utilizes electronic high-frequency oscillation to break up a liquid water molecule structure through high-frequency resonance of a ceramic atomizing sheet to generate naturally elegant water mist, and heating or adding of any chemical reagent is not needed. Compared with the heating atomization mode, the energy is saved by 90 percent. 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. Along with the public demand, the frequency of use of moisturizing appearance is also higher and higher. There are certain drawbacks in most designs of water meter. For example, the water meter needs to be powered by a battery, and most water meters in the market consume large current in a standby state, so that the service life of the battery is extremely short; the water replenishing instrument is not directly closed but continuously works, so that more energy storage electric quantity is consumed, the atomizing sheet is damaged, and the service life is shortened; on the other hand, most water replenishing instruments in the market have different atomization amounts, fixed frequency driving is adopted mostly, and the microporous atomization sheet cannot operate at the optimal frequency due to frequency errors; almost all water supplement instruments also do not have an anti-dry burning function, so that the atomizing sheet is directly burnt out partially under the condition of water shortage.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the not enough of prior art, provide a moisturizing appearance.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a water supplement instrument, includes little the control unit, power boost circuit and atomization oscillation sampling circuit, atomization oscillation sampling circuit one end with power boost circuit electricity is connected, the other end with little the control unit electricity is connected, power boost circuit is used for stepping up in order to satisfy the required actual voltage of atomization oscillation sampling circuit, atomization oscillation sampling circuit is used for carrying to input frequency atomization oscillation and sampling little the control unit carries out voltage detection.

The further technical scheme is as follows: the micro-control unit comprises a protection circuit and a low-power consumption circuit, wherein one end of the low-power consumption circuit is electrically connected with the protection circuit, and the other end of the low-power consumption circuit is electrically connected with the micro-control unit.

The further technical scheme is as follows: the micro-control unit comprises an indicating circuit which is electrically connected with the micro-control unit.

The further technical scheme is as follows: the power supply booster circuit comprises a booster chip U3, an inductor L1, a diode D1, a resistor R21, a resistor R22, a resistor R23, a capacitor C18, a capacitor C19 and an inductor L6, the SW terminal of the boost chip U3 is connected to the second terminal of the inductor L1 and the first terminal of the diode D1, the FB terminal of the boost chip U3 is connected to the second terminal of the resistor R22 and the first terminal of the resistor R23, the second end of the resistor R23 is grounded, the EN end and the IN end of the boosting chip U3 are both connected with the first end of the inductor L1, a second terminal of the diode D1 is connected to the first terminal of the resistor R22, the first terminal of the capacitor C18, the first terminal of the capacitor C19, and the first terminal of the resistor R21, the second ends of the capacitor C18 and the capacitor C19 are both connected to the second end of the resistor R23, and the first end of the inductor L6 is connected to the first end of the resistor R21.

The further technical scheme is as follows: the atomization oscillation sampling circuit comprises a PWM output end, a resistor R2, a resistor R1, a capacitor C12, a MOS tube Q1, a resistor R26, a resistor R3, a capacitor C8, a resistor R24, a capacitor C20, an atomization sheet CN2, a diode D2, a capacitor C4, a resistor R20, a resistor R7, a capacitor C2, a triode D3, a capacitor C1, a resistor R6, a resistor R5 and a capacitor C3, wherein the base of the MOS tube Q1 is respectively connected with the second end of the resistor R2, the first end of the resistor R1 and the first end of the capacitor C12, the first end of the resistor R2 is connected with the PWM output end, the collector of the MOS tube Q1 is respectively connected with the second end of the inductor L6 and the first end of the capacitor C8, the emitter of the MOS tube Q1 is respectively connected with the first end of the resistor R26 and the second end of the diode R26, the second end of the resistor R26 and the second end of the capacitor C26, the second pin of the atomization sheet CN2 is connected to the second terminal of the capacitor C8 and the first terminal of the resistor R24, the first pin of the atomization sheet CN2 is connected to the second terminal of the resistor R3, the second terminal of the capacitor C20 and the first terminal of the diode D3, the second terminal of the resistor R24 is connected to the first terminal of the capacitor C20, the first terminal of the resistor R7 is connected to the second terminal of the diode D2, the first terminal of the capacitor C4 and the first terminal of the resistor R20, the second terminal of the resistor R20 is connected to the second terminal of the capacitor C4, the second terminal of the resistor R7 is connected to the first terminal of the diode D2 and the first terminal of the PIO0_23/ADC _3/ACMP _ I4 of the micro control unit, the second terminal of the capacitor C2 is grounded, the first terminal of the resistor R5 is connected to the second terminal of the diode D3, the second terminal of the capacitor R1 and the second terminal of the capacitor R6, the second end of the resistor R6 is connected with the second end of the capacitor C1, the second end of the resistor R5 is respectively connected with the first end of the capacitor C3 and the PIO0_14/ADC _2/ACMP _ I3 end of the micro-control unit, and the second end of the capacitor C3 is grounded.

The further technical scheme is as follows: the protection circuit comprises a protection chip U6, a battery BAT1, a capacitor C9, a capacitor C16, a resistor R25, a capacitor C6 and a capacitor C11, wherein a Vin end of the protection chip U6 is connected with an output end of the battery BAT1, a first end of the capacitor C9 and a first end of the capacitor C16, a first end of the resistor R25 is connected with an input end of the battery BAT1, a second end of the capacitor C9 and a second end of the capacitor C16 respectively, a second end of the resistor R25 is connected with a GND end of the protection chip U6, a second end of the capacitor C6 and a second end of the capacitor C11 respectively, a Vout end of the protection chip U6 is connected with a first end of the capacitor C6 and a first end of the capacitor C11 respectively, and a second end of the capacitor C11 is grounded.

The further technical scheme is as follows: the low-power consumption circuit comprises a resistor R19, a capacitor C21, a triode Q14, a resistor R16, a MOS transistor Q2 and a resistor R17, wherein the base of the triode Q14 is respectively connected with the second end of the resistor R19 and the first end of the capacitor C21, the first end of the resistor R19 is connected with the VCC _ CTL end of the micro-control unit, the emitter of the triode Q14 is connected with the second end of the capacitor C21 and grounded, the collector of the triode Q14 is connected with the first end of the resistor R16, the second end of the resistor R16 is respectively connected with the first end of the resistor R17 and the base of the MOS transistor Q2, the collector of the MOS transistor Q2 is connected with the battery BAT1, and the emitter of the MOS transistor Q2 is respectively connected with the second end of the resistor R17 and the Vin end of the protection chip U6.

The further technical scheme is as follows: the model of the micro control unit is LPC822M101JDH20-TSSOP 20.

The further technical scheme is as follows: the type of the boosting chip U3 is HM 1548B.

The further technical scheme is as follows: the model of the protection chip U6 is UR 622G-3.3V-3.

Compared with the prior art, the utility model beneficial effect be: the utility model relates to a moisturizing appearance is connected through atomizing oscillation sampling circuit one end and power boost circuit electricity, and the other end is connected with little the control unit electricity, and power boost circuit is used for stepping up in order to satisfy the required actual voltage of atomizing oscillation sampling circuit, and atomizing oscillation sampling circuit is used for carrying out voltage detection to little the control unit to input frequency atomizing oscillation and sampling. Through adjusting input frequency, carry out atomizing oscillation and sample through atomizing oscillation sampling circuit and carry to little the control unit and carry out voltage detection, realize the automatic central frequency who locks atomizing oscillation sampling circuit, directly export with central frequency after the locking is successful, atomizing oscillation sampling circuit's oscillation amplitude is the biggest this moment, and spraying effect is best, has improved atomizing volume and atomization efficiency greatly. Meanwhile, the input frequency obtains a sampling AD value through the atomization oscillation sampling circuit, and if the sampling AD value exceeds a set value, the micro control unit judges that the atomization oscillation sampling circuit is burnt dry through the AD value, so that the input frequency is closed, the damage of the dry burning when the water replenishing instrument is lack of water is prevented, and the service life of the water replenishing instrument is greatly prolonged.

The foregoing is a summary of the present invention, and other objects, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments, which is provided for the purpose of illustration and understanding of the present invention.

Drawings

FIG. 1 is a schematic circuit connection diagram of a water meter;

FIG. 2 is a circuit diagram of a water meter;

FIG. 3 is a circuit diagram of the connection of a power supply boost circuit and an atomization oscillation sampling circuit;

FIG. 4 is a circuit diagram of a protection circuit;

fig. 5 is a circuit diagram of a low power consumption circuit.

Reference numerals

1. A micro control unit; 2. a power supply boost circuit; 3. an atomization oscillation sampling circuit; 4. a protection circuit; 5. a low power consumption circuit; 6. an indication circuit.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and the following detailed description.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "secured" are to be construed broadly and can, for example, be connected or detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above should not be understood to necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by one skilled in the art.

As shown in fig. 1 to 5, a moisturizing appearance, including little the control unit 1, power boost circuit 2 and atomization oscillation sampling circuit 3, atomization oscillation sampling circuit 3 one end is connected with power boost circuit 2 electricity, and the other end is connected with little the control unit 1 electricity, and power boost circuit 2 is used for stepping up in order to satisfy the required actual voltage of atomization oscillation sampling circuit 3, and atomization oscillation sampling circuit 3 is used for carrying out voltage detection to little the control unit 1 to input frequency atomization oscillation and sampling. Through adjusting input frequency, carry out atomizing oscillation and sample through atomizing oscillation sampling circuit 3 and carry to little the control unit 1 and carry out voltage detection, realize automatic locking atomizing oscillation sampling circuit 3's central frequency, directly export with central frequency after the locking is successful, atomizing oscillation sampling circuit 3's oscillation amplitude is the biggest this moment, and the spraying effect is best, has improved atomizing volume and atomization efficiency greatly. Meanwhile, the input frequency is used for obtaining a sampling AD value through the atomization oscillation sampling circuit 3, and if the sampling AD value exceeds a set value, the micro control unit 1 judges that the atomization oscillation sampling circuit 3 is burnt dry through the AD value, so that the input frequency is closed, the damage of the dry burning when the water replenishing instrument is lack of water is prevented, and the service life of the water replenishing instrument is greatly prolonged.

Specifically, as shown in fig. 1, the micro control unit includes a protection circuit 4 and a low power consumption circuit 5, wherein one end of the low power consumption circuit 5 is electrically connected to the protection circuit 4, and the other end is electrically connected to the micro control unit 1. The protection circuit 4 can prevent the water meter from being burnt due to reverse installation of the battery.

In particular, as shown in fig. 1, an indicating circuit 6 is included, the indicating circuit 6 being electrically connected to the micro control unit 1. The indicating circuit 6 is used for realizing the indicating function, and respectively indicating the timing, the intermittence, the starting and the low-voltage indicating function of the battery.

Specifically, as shown IN fig. 2 to fig. 3, the power supply boost circuit 2 includes a boost chip U3, an inductor L1, a diode D1, a resistor R21, a resistor R22, a resistor R23, a capacitor C18, a capacitor C19, and an inductor L6, a SW end of the boost chip U3 is connected to a second end of the inductor L1 and a first end of the diode D1, a FB end of the boost chip U3 is connected to a second end of the resistor R22 and a first end of the resistor R23, a second end of the resistor R23 is grounded, an EN end and an IN end of the boost chip U23 are connected to a first end of the inductor L23, a second end of the diode D23 is connected to a first end of the resistor R23, a first end of the capacitor C23 and a first end of the resistor R23, and a second end of the capacitor C23 and a first end of the resistor L23 are connected to a second end of the resistor R23. 4.5V low voltage is converted into 20V by the power supply booster circuit 2 through the booster chip U3, so that the actual voltage required by the atomization oscillation sampling circuit 3 is met.

Specifically, as shown in fig. 2 to 3, the aerosol oscillation sampling circuit 3 includes a PWM output terminal, a resistor R2, a resistor R1, a capacitor C12, a MOS transistor Q1, a resistor R26, a resistor R3, a capacitor C8, a resistor R24, a capacitor C20, an aerosol chip CN2, a diode D2, a capacitor C4, a resistor R20, a resistor R7, a capacitor C2, a transistor D3, a capacitor C1, a resistor R6, a resistor R5, and a capacitor C3, wherein bases of the MOS transistor Q1 are respectively connected to a second terminal of the resistor R2, a first terminal of the resistor R1, and a first terminal of the capacitor C12, a first terminal of the resistor R12 is connected to the PWM output terminal, collectors of the MOS transistor Q12 are respectively connected to a second terminal of the inductor L12 and a first terminal of the capacitor C12, emitters of the MOS transistor Q12 are respectively connected to a first terminal of the resistor R12 and a second terminal CN 12, a second terminal of the capacitor C12 and a second terminal of the capacitor C12, a first pin of the atomizing plate CN2 is connected to a second terminal of the resistor R3, a second terminal of the capacitor C20 and a first terminal of the diode D3, a second terminal of the resistor R24 is connected to a first terminal of the capacitor C20, a first terminal of the resistor R7 is connected to a second terminal of the diode D2, a first terminal of the capacitor C4 and a first terminal of the resistor R20, a second terminal of the resistor R20 and a second terminal of the capacitor C4, a second terminal of the resistor R7 is connected to a first terminal of the resistor R2 and a first terminal of the PIO0_23/ADC _3/ACMP _ I4 of the micro control unit 1, a second terminal of the capacitor C2 is grounded, a first terminal of the resistor R5 is connected to a second terminal of the diode D3, a first terminal of the capacitor C3 and a first terminal of the resistor R3, a second terminal of the resistor R3 is connected to a second terminal of the capacitor C3 and a second terminal of the micro control unit p 3/ACMP _ I3, the second terminal of the capacitor C3 is connected to ground. PWM is pulse waveform with variable duty ratio, a PWM waveform with fixed duty ratio of 150KHZ is input into a resistor R2, the atomization sheet CN2 is oscillated by a MOS tube Q1, and when the PWM frequency is close to the resonance center frequency of the atomization sheet CN2, the oscillation amplitude of the atomization sheet CN2 is maximum, and the spraying effect is best.

Specifically, as shown in fig. 2 to 3, the input current is boosted by the voltage boosting chip U3 to control the fog oscillation sampling circuit 3. One end of the power supply is connected with a load through an inductor L6, and current flows to a resistor R3 through the atomizing plate CN2 and is grounded. R3 is a sampling resistor, two ends of an atomization sheet CN2 are sine waves when the atomization sheet works, signals are rectified by a diode D3 and filtered by a capacitor C1, voltage drop is generated on the resistor R6, and the acquired signals are converted into direct current components from the sine waves through an RC filter network consisting of a resistor R5 and a capacitor C3 and sent to the end of PIO0_14/ADC _2/ACMP _ I3 of the micro-control unit 1 for voltage detection; the mcu 1 changes the output frequency of PWM, such as 140KHZ, 145KHZ, 150HZ, 155KHZ, 16OKHZ or 165KHZ, each frequency corresponds to an AD value, and when the AD value is maximum, it follows the frequency to the optimal oscillation frequency, so as to realize the frequency locking function.

Specifically, when the moisturizing appearance takes place the water deficiency state, atomizing piece CN2 generates heat because the dry combustion method is burnt, peak voltage risees suddenly, the electric current of flowing through MOS pipe Q1 can rise suddenly, the electric current that flows through resistance R26 can increase this moment, the sampling AD value can be very big, little the control unit 1 can judge that the atomizing piece has burnt by fire by dry through this value, close PWM input waveform, guaranteed the moisturizing appearance water deficiency like this and prevented the problem of burning by dry, fundamentally has stopped the dry combustion method harm of atomizing piece, has improved life greatly.

Specifically, as shown in fig. 2 and 4, the protection circuit 4 includes a protection chip U6, a battery BAT1, a capacitor C9, a capacitor C16, a resistor R25, a capacitor C6, and a capacitor C11, wherein a Vin end of the protection chip U6 is connected to an output end of the battery BAT1, a first end of the capacitor C9, and a first end of the capacitor C16, a first end of the resistor R25 is connected to an input end of the battery BAT1, a second end of the capacitor C9, and a second end of the capacitor C16, a second end of the resistor R25 is connected to a GND end of the protection chip U6, a second end of the capacitor C6, and a second end of the capacitor C11, a Vout end of the protection chip U6 is connected to a first end of the capacitor C6 and a first end of the capacitor C11, and a second end of the capacitor C11 is grounded. If the battery BAT1 is reversely mounted, the negative pole of the battery is connected with the pin No. 1 (the output end of the battery BAT 1), and the positive pole of the battery is connected with the pin No. 2 (the input end of the battery BAT 1). At this time, the circuit is equivalent to an open circuit, and all the circuits connected with the VBAT circuit can not react and can not provide current. The protection circuit 4 is designed in this way to prevent the chip from being burned.

Specifically, as shown in fig. 2 and 5, the low power consumption circuit 5 includes a resistor R19, a capacitor C21, a transistor Q14, a resistor R16, a MOS transistor Q2 and a resistor R17, wherein a base of the transistor Q14 is connected to the second end of the resistor R19 and the first end of the capacitor C21, a first end of the resistor R19 is connected to the VCC _ CTL end of the mcu 1, an emitter of the transistor Q14 is connected to the second end of the capacitor C21 and grounded, a collector of the transistor Q14 is connected to the first end of the resistor R16, a second end of the resistor R16 is connected to the first end of the resistor R17 and the base of the MOS transistor Q2, a collector of the MOS transistor Q2 is connected to the battery BAT1, and an emitter of the transistor Q2 is connected to the second end of the resistor R17 and the end of the protection chip U6. Because the moisturizing appearance uses battery powered, so when not working, need reduce the power consumption as far as possible. The power consumption is reduced by time-sharing power supply, the VCC-CTL end is connected with the micro control unit 1, and in a standby state, the VCC-CTL end is internally provided with a low level by the micro control unit 1, the triode Q14 cannot be conducted, the MOS transistor Q2 is cut off, and the VBAT cannot be conducted. The power supply booster circuit 2 and the like at the rear end are in an off state, the low-power switch greatly reduces the standby power consumption, and the service life of the battery is prolonged.

Specifically, the model of the micro control unit 1 is LPC822M101JDH20-TSSOP 20.

Specifically, the model of the boost chip U3 is HM 1548B.

Specifically, the model of the protection chip U6 is UR 622G-3.3V-3.

Specifically, this moisturizing appearance can apply to equipment such as champignon machine or micropore atomizing. The self-adaptive function of the atomizing sheet is realized, different atomizing sheets are guaranteed to work under the optimal oscillation frequency, and the atomizing amount and the atomizing efficiency are greatly improved.

Compared with the prior art, the utility model relates to a moisturizing appearance passes through atomization oscillation sampling circuit one end and is connected with the power boost circuit electricity, and the other end is connected with little the control unit electricity, and the power boost circuit is used for stepping up in order to satisfy the required actual voltage of atomization oscillation sampling circuit, and atomization oscillation sampling circuit is used for carrying out voltage detection to little the control unit to input frequency atomization oscillation and sampling. Through adjusting input frequency, carry out atomizing oscillation and sample through atomizing oscillation sampling circuit and carry to little the control unit and carry out voltage detection, realize the automatic central frequency who locks atomizing oscillation sampling circuit, directly export with central frequency after the locking is successful, atomizing oscillation sampling circuit's oscillation amplitude is the biggest this moment, and spraying effect is best, has improved atomizing volume and atomization efficiency greatly. Meanwhile, the input frequency obtains a sampling AD value through the atomization oscillation sampling circuit, and if the sampling AD value exceeds a set value, the micro control unit judges that the atomization oscillation sampling circuit is burnt dry through the AD value, so that the input frequency is closed, the damage of the dry burning when the water replenishing instrument is lack of water is prevented, and the service life of the water replenishing instrument is greatly prolonged.

The technical content of the present invention is further described by the embodiments only, so that the reader can understand it more easily, but the embodiments of the present invention are not limited thereto, and any technical extension or re-creation according to the present invention is protected by the present invention. The protection scope of the present invention is subject to the claims.

Claims

1. The utility model provides a water supplement instrument, its characterized in that, includes little the control unit, power boost circuit and atomization oscillation sampling circuit, atomization oscillation sampling circuit one end with power boost circuit electricity is connected, the other end with little the control unit electricity is connected, power boost circuit is used for stepping up in order to satisfy the required actual voltage of atomization oscillation sampling circuit, atomization oscillation sampling circuit is used for carrying to input frequency atomization oscillation and sampling little the control unit carries out voltage detection.

2. The water supplementing instrument according to claim 1, comprising a protection circuit and a low power consumption circuit, wherein one end of the low power consumption circuit is electrically connected with the protection circuit, and the other end of the low power consumption circuit is electrically connected with the micro control unit.

3. The water meter of claim 1 including an indicator circuit electrically connected to said micro-control unit.

4. The water meter according to claim 1, wherein the power boost circuit comprises a boost chip U3, an inductor L1, a diode D1, a resistor R21, a resistor R22, a resistor R23, a capacitor C18, a capacitor C19 and an inductor L6, the SW terminal of the boost chip U3 is connected to the second terminal of the inductor L1 and the first terminal of the diode D1, the FB terminal of the boost chip U3 is connected to the second terminal of the resistor R22 and the first terminal of the resistor R23, the second terminal of the resistor R23 is grounded, the EN terminal and the IN terminal of the boost chip U3 are connected to the first terminal of the inductor L1, the second terminal of the diode D1 is connected to the first terminal of the resistor R22, the first terminal of the capacitor C18, the first terminal of the capacitor C19 and the first terminal of the resistor R19, and the second terminal of the capacitor C19 are connected to the second terminal of the resistor R19, the first end of the inductor L6 is connected to the first end of the resistor R21.

5. The water meter according to claim 4, wherein the aerosol oscillating and sampling circuit comprises a PWM output terminal, a resistor R2, a capacitor C2, a MOS transistor Q2, a resistor R2, a capacitor C2, a resistor R2, an aerosol sheet CN2, a diode D2, a capacitor C2, a resistor R2, a capacitor C2, a transistor D2, a capacitor C2, a resistor R2, and a capacitor C2, wherein a base of the MOS transistor Q2 is connected to a second terminal of the resistor R2, a first terminal of the resistor R2, and a first terminal of the capacitor C2, a first terminal of the resistor R2 is connected to the PWM output terminal, a collector of the MOS transistor Q2 is connected to a second terminal of the inductor L2 and a first terminal of the capacitor C2, a collector of the MOS transistor Q2 is connected to the first terminal of the resistor R2, and the first terminal of the emitter 2 are connected to the first terminal of the diode R2, and the first terminal of the resistor R2, respectively, and the first terminal of, A second terminal of the capacitor C12 is connected to a second terminal of the resistor R26, a second pin of the atomization patch CN2 is connected to a second terminal of the capacitor C8 and a first terminal of the resistor R24, respectively, a first pin of the atomization patch CN2 is connected to a second terminal of the resistor R3, a second terminal of the capacitor C20 and a first terminal of the diode D3, a second terminal of the resistor R24 is connected to a first terminal of the capacitor C20, a first terminal of the resistor R7 is connected to a second terminal of the diode D2, a first terminal of the capacitor C4 and a first terminal of the resistor R20, a second terminal of the resistor R20 is connected to a second terminal of the capacitor C4, a second terminal of the resistor R7 is connected to a first terminal of the capacitor C2 and a first terminal of the PIO0_23/ADC _3/ACMP _ I4 of the mcu, respectively, a second terminal of the capacitor C2 is connected to ground, and a second terminal of the resistor R5 is connected to a second terminal of the diode D3, The first end of the capacitor C1 is connected with the first end of the resistor R6, the second end of the resistor R6 is connected with the second end of the capacitor C1, the second end of the resistor R5 is respectively connected with the first end of the capacitor C3 and the PIO0_14/ADC _2/ACMP _ I3 end of the micro-control unit, and the second end of the capacitor C3 is grounded.

6. The water meter according to claim 2, wherein the protection circuit comprises a protection chip U6, a battery BAT1, a capacitor C9, a capacitor C16, a resistor R25, a capacitor C6 and a capacitor C11, wherein Vin terminals of the protection chip U6 are respectively connected to an output terminal of the battery BAT1, a first terminal of the capacitor C9 and a first terminal of the capacitor C16, a first terminal of the resistor R25 is respectively connected to an input terminal of the battery BAT1, a second terminal of the capacitor C9 and a second terminal of the capacitor C16, a second terminal of the resistor R25 is respectively connected to a GND terminal of the protection chip U6, a second terminal of the capacitor C6 and a second terminal of the capacitor C11, Vout terminals of the protection chip U6 are respectively connected to a first terminal of the capacitor C6 and a first terminal of the capacitor C11, and a second terminal of the capacitor C11 is grounded.

7. The water meter of claim 6, wherein the low power consumption circuit comprises a resistor R19, a capacitor C21, a transistor Q14, a resistor R16, a MOS transistor Q2 and a resistor R17, wherein a base of the transistor Q14 is connected to the second end of the resistor R19 and the first end of the capacitor C21, respectively, a first end of the resistor R19 is connected to the VCC _ CTL of the mcu, an emitter of the transistor Q14 is connected to the second end of the capacitor C21 and grounded, a collector of the transistor Q14 is connected to the first end of the resistor R16, a second end of the resistor R16 is connected to the first end of the resistor R17 and the base of the MOS transistor Q2, a collector of the MOS transistor Q2 is connected to the battery BAT1, and an emitter of the MOS transistor Q2 is connected to the second end of the resistor R17 and the Vin end of the protection chip U6, respectively.

8. The water meter of claim 1, wherein the micro control unit is model LPC822M101JDH20-TSSOP 20.

9. The water meter of claim 4, wherein the pressure chip U3 is HM 1548B.

10. The water supplement instrument of claim 6, wherein the protection chip U6 is UR 622G-3.3V-3.