CN216309139U - Anhydrous dry combustion detection circuit and aromatherapy machine - Google Patents
Anhydrous dry combustion detection circuit and aromatherapy machine Download PDFInfo
- Publication number
- CN216309139U CN216309139U CN202121863446.9U CN202121863446U CN216309139U CN 216309139 U CN216309139 U CN 216309139U CN 202121863446 U CN202121863446 U CN 202121863446U CN 216309139 U CN216309139 U CN 216309139U
- Authority
- CN
- China
- Prior art keywords
- atomizer
- voltage
- controller
- sampling
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Electrostatic Spraying Apparatus (AREA)
Abstract
The utility model discloses a waterless dry burning detection circuit, which comprises an atomizer; the first sampling module is connected with the atomizer and used for sampling the power of the atomizer in real time; the second sampling module is connected with the atomizer and used for sampling the voltage of the atomizer in real time; the driving module is connected with the atomizer and is used for driving the atomizer; the input end of the controller is respectively connected with the first sampling module and the second sampling module, the output end of the controller is connected with the driving module, and the controller is used for sending a control signal to the driving module according to the power and the voltage of the atomizer so as to control the working state of the atomizer. Correspondingly, the utility model also discloses an aromatherapy machine related to the waterless dry-heating detection circuit. The atomizer can be controlled according to the power and the voltage of the atomizer, and the utility model has the advantages of simple structure, low cost, accurate detection, safety and reliability.
Description
Technical Field
The utility model relates to the technical field of electronic circuits, in particular to an anhydrous dry burning detection circuit and an aromatherapy machine.
Background
Many atomizing electronic products (such as atomizing machine, humidifier, champignon machine, beauty instrument etc.) on the market need atomize water to realize functions such as humidification, dust removal or champignon. In order to avoid the dry burning phenomenon in the absence of water, the prior art generally adds a water level detection circuit or an atomizer voltage detection circuit on the basis of an atomization circuit to realize dry burning detection.
Wherein, the water level detection circuit realizes dry combustion method detection through detecting the water level in the water storage bucket, and when the water yield in the water storage bucket was less than certain water level, control chip control atomizer stopped, but water level detector's life is short, exists after long-time the use and detects the shortcoming inaccurate, that the fault rate is high, leads to control chip to produce the misjudgement easily and the miscontrol atomizer.
And atomizer voltage detection circuit realizes dry combustion method detection through the voltage that detects the atomizer both ends, when not having water on the atomizer, the voltage at atomizer both ends can increase suddenly or reduce suddenly, and control chip control atomizer stops, nevertheless because the electronic component temperature changes easily, the current in the atomizing circuit changes suddenly thereupon easily, leads to the voltage at atomizer both ends to take place the sudden change to lead to control chip to produce the misjudgement.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing the waterless dry-burning detection circuit and the aromatherapy machine, which can control the atomizer according to the power and the voltage of the atomizer and have the advantages of simple structure, low cost, accurate detection, safety and reliability.
In order to solve the technical problem, the utility model provides a waterless dry-heating detection circuit, which comprises an atomizer; the first sampling module is connected with the atomizer and used for sampling the power of the atomizer in real time; the second sampling module is connected with the atomizer and used for sampling the voltage of the atomizer in real time; the driving module is connected with the atomizer and is used for driving the atomizer; the input end of the controller is respectively connected with the first sampling module and the second sampling module, the output end of the controller is connected with the driving module, and the controller is used for sending a control signal to the driving module according to the power and the voltage of the atomizer so as to control the working state of the atomizer.
As an improvement of the above scheme, a timer, a calculator, a voltage comparator, a power comparator and a master controller are arranged in the controller; the timer is used for timing the voltage sampling process of the second sampling module; the calculator is used for calculating the average voltage in preset time; the voltage comparator is used for comparing the average voltage with a preset threshold voltage so as to output a voltage comparison signal; the power comparator is used for comparing the power sampled by the first sampling module with a rated power so as to output a power comparison signal; the main controller is used for sending a control signal to the driving module according to the voltage comparison signal and the power comparison signal so as to control the working state of the atomizer, wherein when the average voltage exceeds a preset threshold voltage and the power is greater than a rated power, the atomizer is driven to stop.
As an improvement of the above scheme, the driving module includes a first filtering module, a first capacitor, an inductor, a first current limiting resistor, a first bias resistor, and an MOS transistor; one end of the first filtering module is respectively connected with a power supply and one end of the inductor, and the other end of the first filtering module is grounded; the other end of the inductor is connected with the cathode of the atomizer through the first capacitor, and a tap of the inductor is connected with the drain electrode of the MOS tube; the grid electrode of the MOS tube is connected with the first output end of the controller through the first current limiting resistor, and is connected with the source electrode of the MOS tube through the first bias resistor, and the source electrode of the MOS tube is connected with the anode of the atomizer.
As an improvement of the above scheme, the first filtering module comprises an electrolytic capacitor and a second capacitor which are connected in parallel with each other.
As an improvement of the above scheme, the first sampling module comprises a power sampling module and a second filtering module, and the power sampling module comprises at least two sampling resistors connected in parallel; the positive pole of the atomizer is grounded through the power sampling module and is connected with the first input end of the controller through the second filtering module.
As an improvement of the above scheme, the second filtering module includes a second current-limiting resistor and a third capacitor, the anode of the atomizer is connected to the first input end of the controller through the second current-limiting resistor, and the first input end of the controller is grounded through the third capacitor.
As an improvement of the above scheme, the second sampling module comprises a voltage sampling resistor, a diode, a first voltage dividing resistor and a third filtering module; the negative pole of atomizer passes through voltage sampling resistance with the positive pole of diode is connected, the positive pole of diode passes through first divider resistance ground connection, the negative pole of diode with the second input of controller is connected, and passes through third filtering module ground connection.
As an improvement of the above solution, the third filtering module includes a second voltage dividing resistor and a fourth capacitor connected in parallel with each other.
As an improvement of the above scheme, the waterless dry-heating detection circuit further comprises a dry-heating prompt module, wherein the dry-heating prompt module comprises a triode, a fourth current-limiting resistor, a second bias resistor and a prompter; the base electrode of the triode is connected with the second output end of the controller through the fourth current limiting resistor, the collector electrode of the triode is connected with one end of the prompter, the other end of the prompter is connected with the power supply, and the emitting electrode of the triode is grounded and is connected with the base electrode of the triode through the second biasing resistor.
Correspondingly, the utility model also provides an aromatherapy machine, which comprises an aromatherapy machine body and the waterless dry burning detection circuit, wherein the waterless dry burning detection circuit is arranged in the aromatherapy machine body.
The beneficial effects of the implementation of the utility model are as follows:
in the utility model, the waterless dry-burning detection circuit only comprises a controller, a driving module, an atomizer, a first sampling module, a second sampling module and other modules, and has simple structure and low cost; secondly, because be equipped with the timer in the controller, the controller can be according to in the certain time the atomizer is controlled to the voltage variation and the instantaneous power of atomizer, can avoid the testing result to receive factors such as electronic component temperature influence, detect accurate, the reliability is high. Therefore, the atomizer can be controlled according to the power and the voltage of the atomizer by adopting the utility model, and the utility model has the advantages of simple structure, low cost, accurate detection, safety and reliability.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment of a waterless dry-fire detection circuit according to the present invention;
FIG. 2 is a schematic circuit diagram of the waterless dry-fire detection circuit of the present invention;
FIG. 3 is a schematic structural diagram of a second embodiment of the dry-fire detection circuit according to the present invention;
fig. 4 is a schematic circuit diagram of the dry-fire prompt module of fig. 3.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings. It is only noted that the utility model is intended to be limited to the specific forms set forth herein, including any reference to the drawings, as well as any other specific forms of embodiments of the utility model.
As shown in fig. 1, fig. 1 shows a first embodiment of the present invention, and provides a waterless dry-fire detection circuit, which includes an atomizer 3; the first sampling module 4 is connected with the atomizer 3 and is used for sampling the power of the atomizer 3 in real time; the second sampling module 5 is connected with the atomizer 3 and is used for sampling the voltage of the atomizer 3 in real time; the driving module 2 is connected with the atomizer 3 and is used for driving the atomizer 3; the device comprises a controller 1, wherein the input end of the controller 1 is respectively connected with a first sampling module 4 and a second sampling module 5, the output end of the controller 1 is connected with a driving module 2, and the controller 1 is used for sending a control signal to the driving module 2 according to the power and the voltage of an atomizer 3 so as to control the working state of the atomizer 3.
It should be noted that the waterless dry-heating detection circuit only comprises modules such as a controller 1, a driving module 2, an atomizer 3, a first sampling module 4 and a second sampling module 5, and is simple in structure and low in cost; secondly, because be equipped with the timer in the controller 1, controller 1 can be according to in a certain time atomizer 3's voltage variation and instantaneous power control atomizer 3, can avoid the testing result to receive factors such as electronic component temperature influence, detect accurate, the reliability is high.
Specifically, a timer, a calculator, a voltage comparator, a power comparator and a master controller are arranged in the controller 1; the timer is used for timing the voltage sampling process of the second sampling module 5; the calculator is used for calculating the average voltage K in the preset time; the voltage comparator is used for comparing the average voltage K with a preset threshold voltage so as to output a voltage comparison signal; the power comparator is used for comparing the power sampled by the first sampling module 4 with a rated power so as to output a power comparison signal; the main controller is used for sending a control signal to the driving module 2 according to the voltage comparison signal and the power comparison signal so as to control the working state of the atomizer 3, wherein when the average voltage K exceeds a preset threshold voltage and the power is greater than a rated power, the atomizer 3 is driven to stop.
Therefore, the control process of the controller is as follows:
after the atomizer 3 works, a timer in the controller 1 starts timing, at this time, the voltage of the atomizer 3 is V2, when the preset time T is timed, at this time, the voltage of the atomizer 3 is V3, the controller 1 calculates a K value through a formula K ═ V3-V2/T, the K value may be a positive number or a negative number, when the K value exceeds a threshold range and the instantaneous power of the atomizer 3 is greater than the rated power, it is determined that the atomizer 3 is in a dry combustion state, the controller 1 controls the atomizer 3 to stop, otherwise, the above steps are repeated.
The voltage comparator is a common comparator, one end of the comparator is connected with an average voltage K, the other end of the comparator is connected with a preset threshold voltage, when the average voltage K is larger than the preset threshold voltage, the comparator outputs a high level, and the power comparator is similar to the power comparator; the controller 1 is preferably an SC91F832 chip, but is not limited thereto, and may include the timer, the calculator, the comparator, and the master controller; the threshold range can be adjusted according to actual conditions, so that the sensitivity of the waterless dry-heating protection range is adjusted.
As shown in fig. 2, the driving module 2 includes a first filtering module 21, a first capacitor C4, an inductor L2, a first current limiting resistor RC1, a first bias resistor R3, and a MOS transistor MOS 1; one end of the first filtering module 21 is connected to a power supply CN1 and one end of the inductor L2, respectively, and the other end of the first filtering module 21 is grounded; the other end of the inductor L2 is connected to the negative electrode of the atomizer CN2(FOG) through the first capacitor C4, and the tap of the inductor L2 is connected to the drain of the MOS transistor MOS 1; the gate of the MOS transistor MOS1 is connected to the first output terminal OUT _1 of the controller 1 through the first current limiting resistor RC1, and is connected to the source of the MOS transistor MOS1 through the first bias resistor R3, and the source of the MOS transistor MOS1 is connected to the anode of the atomizer CN2 (FOG). Wherein the power supply CN1 provides +5V voltage.
It should be noted that, when the atomizer CN2(FOG) needs to be turned on, the controller 1 provides a certain voltage to the gate of the MOS transistor MOS1, so that the drain and the source of the MOS transistor MOS1 are conducted, and the atomizer CN2(FOG) is powered on. The main function of the bias resistor is to provide a gate voltage with a proper magnitude so that the MOS transistor MOS1 has a proper operating point. Secondly, the first filtering module comprises an electrolytic capacitor EC1 and a second capacitor C12 which are connected in parallel, and the electrolytic capacitor EC1 is used for converting the pulsating direct-current voltage rectified by the power supply CN1 into a relatively stable direct-current voltage.
Correspondingly, the first sampling module 4 includes a power sampling module 41 and a second filtering module 42, and the power sampling module 41 includes a first sampling resistor RA1 and a second sampling resistor RA2 connected in parallel; the anode of the nebulizer CN2(FOG) is grounded through the power sampling module 41, and is connected to the first input terminal IN _1 of the controller 1 through the second filtering module 42. The input of the controller 1 via the first sampling module 4 is a first current signal, and the controller 1 obtains the power of the nebulizer CN2(FOG) according to the first current signal, the first sampling resistor RA1 and the second sampling resistor RA 2.
Specifically, the second filtering module 42 includes a second current limiting resistor R5 and a third capacitor C9, the anode of the atomizer CN2(FOG) is connected to the first input terminal IN _1 of the controller 1 through the second current limiting resistor R5, and the first input terminal IN _1 of the controller 1 is grounded through the third capacitor C9. Wherein the second current limiting resistor R5 and the third capacitor C9 combine to form a low pass filter, allowing signals of low frequency to be input into the controller 1.
Secondly, the second sampling module 5 comprises a voltage sampling resistor RA3, a diode D1, a first voltage dividing resistor R21 and a third filtering module 51; the cathode of the atomizer CN2(FOG) is connected to the anode of the diode D1 through the voltage sampling resistor RA3, the anode of the diode D1 is grounded through the first voltage dividing resistor R21, and the cathode of the diode D1 is connected to the second input terminal IN _2 of the controller 1 and is grounded through the third filtering module 51. Wherein, what is input into the controller 1 via the second sampling module 5 is a second current signal, and the controller 1 obtains the voltage of the nebulizer CN2(FOG) according to the second current signal and the parameter of the voltage sampling resistor RA 3.
Specifically, the third filtering module 51 includes a second voltage dividing resistor R11 and a fourth capacitor C7 connected in parallel, wherein the fourth capacitor C7 is used for filtering and smoothing the second current signal input to the controller 1.
With reference to fig. 3-4, fig. 3-4 show a second embodiment of the present invention, different from the first embodiment, the waterless dry-heating detection circuit further includes a dry-heating prompt module 6, where the dry-heating prompt module 6 includes a transistor Q1, a fourth current-limiting resistor R13, a second bias resistor R14, and a prompt 61; the base of the triode Q1 is connected with the second output end OUT _2 of the controller 1 through the fourth current limiting resistor R13, the collector of the triode Q1 is connected with one end of the prompter 61, the other end of the prompter 61 is connected with the +5V voltage provided by the power supply CN1, and the emitter of the triode Q1 is grounded and connected with the base of the triode Q1 through the second biasing resistor R14.
Wherein the prompter 61 is a light emitting diode and/or a buzzer, and can visually or audibly prompt the user that the water is lacking.
Correspondingly, the utility model also provides an aromatherapy machine which is characterized by comprising an aromatherapy machine body and the waterless dry burning detection circuit, wherein the waterless dry burning detection circuit is arranged in the aromatherapy machine body.
In conclusion, the atomizer can be controlled according to the power and the voltage of the atomizer by adopting the utility model, and the atomizer has the advantages of simple structure, low cost, accurate detection, safety and reliability.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the utility model.
Claims (10)
1. A waterless dry-burning detection circuit is characterized by comprising
An atomizer;
the first sampling module is connected with the atomizer and used for sampling the power of the atomizer in real time;
the second sampling module is connected with the atomizer and used for sampling the voltage of the atomizer in real time;
the driving module is connected with the atomizer and is used for driving the atomizer;
the input end of the controller is respectively connected with the first sampling module and the second sampling module, the output end of the controller is connected with the driving module, and the controller is used for sending a control signal to the driving module according to the power and the voltage of the atomizer so as to control the working state of the atomizer.
2. The waterless dry-burning detection circuit according to claim 1, wherein a timer, a calculator, a voltage comparator, a power comparator and a master controller are arranged in the controller;
the timer is used for timing the voltage sampling process of the second sampling module;
the calculator is used for calculating the average voltage in preset time;
the voltage comparator is used for comparing the average voltage with a preset threshold voltage so as to output a voltage comparison signal;
the power comparator is used for comparing the power sampled by the first sampling module with a rated power so as to output a power comparison signal;
the main controller is used for sending a control signal to the driving module according to the voltage comparison signal and the power comparison signal so as to control the working state of the atomizer, wherein when the average voltage exceeds a preset threshold voltage and the power is greater than a rated power, the atomizer is driven to stop.
3. The waterless dry-burning detection circuit of claim 1, wherein the driving module comprises a first filtering module, a first capacitor, an inductor, a first current-limiting resistor, a first bias resistor and a MOS transistor;
one end of the first filtering module is respectively connected with a power supply and one end of the inductor, and the other end of the first filtering module is grounded;
the other end of the inductor is connected with the cathode of the atomizer through the first capacitor, and a tap of the inductor is connected with the drain electrode of the MOS tube;
the grid electrode of the MOS tube is connected with the first output end of the controller through the first current limiting resistor, and is connected with the source electrode of the MOS tube through the first bias resistor, and the source electrode of the MOS tube is connected with the anode of the atomizer.
4. The waterless dry-fire detection circuit of claim 3, wherein the first filtering module comprises an electrolytic capacitor and a second capacitor connected in parallel with each other.
5. The waterless dry-burning detection circuit of claim 1, wherein the first sampling module comprises a power sampling module and a second filtering module, the power sampling module comprises at least two sampling resistors connected in parallel with each other;
the positive pole of the atomizer is grounded through the power sampling module and is connected with the first input end of the controller through the second filtering module.
6. The waterless dry-burning detection circuit of claim 5, wherein the second filtering module comprises a second current-limiting resistor and a third capacitor, the anode of the atomizer is connected to the first input end of the controller through the second current-limiting resistor, and the first input end of the controller is grounded through the third capacitor.
7. The waterless dry-burning detection circuit of claim 1, wherein the second sampling module comprises a voltage sampling resistor, a diode, a first voltage dividing resistor and a third filtering module;
the negative pole of atomizer passes through voltage sampling resistance with the positive pole of diode is connected, the positive pole of diode passes through first divider resistance ground connection, the negative pole of diode with the second input of controller is connected, and passes through third filtering module ground connection.
8. The waterless dry-burning detection circuit of claim 7, wherein the third filtering module comprises a second voltage-dividing resistor and a fourth capacitor connected in parallel with each other.
9. The waterless dry-burning detection circuit of claim 1, further comprising a dry-burning prompt module, wherein the dry-burning prompt module comprises a triode, a fourth current-limiting resistor, a second bias resistor and a prompter;
the base electrode of the triode is connected with the second output end of the controller through the fourth current limiting resistor, the collector electrode of the triode is connected with one end of the prompter, the other end of the prompter is connected with the power supply, and the emitting electrode of the triode is grounded and is connected with the base electrode of the triode through the second biasing resistor.
10. An aromatherapy machine, which is characterized by comprising an aromatherapy machine body and the waterless dry-burning detection circuit of any one of claims 1 to 9, wherein the waterless dry-burning detection circuit is arranged in the aromatherapy machine body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121863446.9U CN216309139U (en) | 2021-08-10 | 2021-08-10 | Anhydrous dry combustion detection circuit and aromatherapy machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121863446.9U CN216309139U (en) | 2021-08-10 | 2021-08-10 | Anhydrous dry combustion detection circuit and aromatherapy machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216309139U true CN216309139U (en) | 2022-04-15 |
Family
ID=81085722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121863446.9U Active CN216309139U (en) | 2021-08-10 | 2021-08-10 | Anhydrous dry combustion detection circuit and aromatherapy machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216309139U (en) |
-
2021
- 2021-08-10 CN CN202121863446.9U patent/CN216309139U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP4005416B1 (en) | Electronic cigarette having power chip with automatic closed-loop control for output | |
| EP3797611A1 (en) | Working control circuit of ultrasonic atomizing sheet and ultrasonic electronic cigarette | |
| CN107257123B (en) | Dry combustion protection circuit, humidifying device, air conditioner and control method of humidifying device | |
| CN205196989U (en) | Electronic cigarette | |
| CN203595920U (en) | Protection circuit preventing atomization pieces from dry burning | |
| CN109378706B (en) | Semiconductor laser high peak power energy supply constant current pulse driving power supply | |
| CN216309139U (en) | Anhydrous dry combustion detection circuit and aromatherapy machine | |
| CN104719105A (en) | Automatic humidity-control watering device | |
| CN216857168U (en) | Ultrasonic atomizer | |
| CN107516872B (en) | MMC converter valve submodule forward overvoltage protection circuit | |
| CN216039857U (en) | Electrolysis control circuit and disinfectant manufacturing device | |
| CN203219598U (en) | Energy-saving high-voltage mosquito eradication device | |
| CN107790840B (en) | Electronic control system for global universal wide voltage input electric soldering iron | |
| CN221842452U (en) | Atomizer drive circuit | |
| CN215870762U (en) | Overshoot prevention protection circuit | |
| WO2023143065A1 (en) | Ultrasonic atomizer and working state determining method thereof | |
| CN221527853U (en) | Front-end signal processing circuit of pressure sensor | |
| WO2024061166A1 (en) | Ultrasonic atomizer, and resonant-frequency determination method based on ultrasonic atomizer | |
| CN216248820U (en) | Electronic atomization equipment control circuit | |
| CN220270495U (en) | Signal acquisition circuit of vibrating wire type sensor | |
| CN221614636U (en) | Output overvoltage quick response protection circuit | |
| CN212210541U (en) | Well site sensor battery voltage stabilizing module | |
| CN110657859B (en) | Waterless dry-burning detection circuit | |
| CN219780019U (en) | Brush motor control circuit | |
| CN203398770U (en) | Floating-charging charger over-current protection circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |