CN215653161U - Atomizer control circuit and atomizer - Google Patents
Atomizer control circuit and atomizer Download PDFInfo
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- CN215653161U CN215653161U CN202121303402.0U CN202121303402U CN215653161U CN 215653161 U CN215653161 U CN 215653161U CN 202121303402 U CN202121303402 U CN 202121303402U CN 215653161 U CN215653161 U CN 215653161U
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Abstract
The application relates to atomizer control circuit and atomizer, atomizer control circuit includes: a power supply circuit; when detecting that a person leaves the sensing range, sending a feedback signal to a sensor circuit of the controller; after receiving the feedback signal, the controller controls the power supply circuit to be disconnected with the external power supply; the controller is connected with the sensor circuit and the power supply circuit, and the power supply circuit is used for being connected with an external power supply. When the fact that a person leaves the induction range is detected, the atomizer is powered off to stop working, waste of liquid medicine and pollution to the surrounding environment are reduced, and the use safety of the atomizer is improved.
Description
Technical Field
The application relates to the technical field of medical equipment, in particular to an atomizer control circuit and an atomizer.
Background
Along with the environmental deterioration, especially the air pollution aggravation, the high frequency of the haze weather appears, and respiratory diseases are easily caused to some crowds with lower immunity of children and the like; such as rhinitis, bronchitis, asthma, etc. Parents have to bring children to go to hospital for medical treatment, and most of the diseases need to be treated by atomization, and the demand for atomizers which can be used directly at home is met for the reasons of time, money, full illness in hospitals and the like.
The main users of the traditional household atomizer are all infants, the atomizer is opened when children use the household atomizer, and people walk away, so that the waste of liquid medicine and the pollution to the surrounding environment are caused, and the use safety of the atomizer is also reduced.
SUMMERY OF THE UTILITY MODEL
Therefore, it is necessary to provide an atomizer control circuit and an atomizer for solving the problems of the conventional atomizer that the liquid medicine is wasted and the surrounding environment is polluted, and the use safety of the atomizer is reduced, so that the effects of effectively avoiding the liquid medicine waste and the surrounding environment pollution and improving the use safety of the atomizer can be achieved.
A nebulizer control circuit comprising:
a power supply circuit;
when detecting that a person leaves the sensing range, sending a feedback signal to a sensor circuit of the controller;
the controller is used for controlling the power supply circuit to be disconnected with an external power supply after receiving the feedback signal;
the controller is connected with the sensor circuit and the power supply circuit, and the power supply circuit is used for being connected with an external power supply.
In one embodiment, the sensor circuit includes a pyroelectric sensor connected to the controller.
In one embodiment, the sensor circuit further comprises a first current limiting resistor, and the pyroelectric sensor is connected with the controller through the first current limiting resistor.
In one embodiment, the power supply circuit comprises a power supply module and a switch module, wherein the power supply module is connected with the controller, and the switch module is connected with the controller, the power supply module and an external power supply.
In one embodiment, the power supply module is a DC-DC module.
In one embodiment, the switch module comprises a first switch tube, a second switch tube, a first voltage dividing resistor, a second current limiting resistor and a pull-down resistor;
the first voltage-dividing resistor and the second voltage-dividing resistor are connected in series, a common end of the first voltage-dividing resistor is connected with a control end of the first switch tube, the other end of the first voltage-dividing resistor is connected with an external power supply, and the other end of the second voltage-dividing resistor is connected with a first end of the second switch tube; the first end of the first switch tube is connected with an external power supply, the second end of the first switch tube is connected with the power supply module, the control end of the second switch tube is connected with the controller through the second current-limiting resistor and is grounded through the pull-down resistor, and the second end of the second switch tube is grounded.
In one embodiment, the first switch tube is a MOS tube or a triode; the second switch tube is an MOS tube or a triode.
In one embodiment, the nebulizer control circuit further comprises a switch connecting the controller and an external power source.
In one embodiment, the controller is an MCU.
An atomizer comprises the atomizer control circuit.
Above-mentioned atomizer control circuit and atomizer, sensor circuit send feedback signal to the controller when detecting that the people leaves the response scope. And after the controller receives the feedback signal, the power supply circuit is controlled to be disconnected from the external power supply. When the fact that a person leaves the induction range is detected, the atomizer is powered off to stop working, waste of liquid medicine and pollution to the surrounding environment are reduced, and the use safety of the atomizer is improved.
Drawings
FIG. 1 is a schematic diagram of an exemplary control circuit for an atomizer;
fig. 2 is a schematic diagram illustrating the operation of the atomizer according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
It will be understood that spatial relationship terms, such as "under", "below", "beneath", "below", "over", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements or features described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary terms "under" and "under" can encompass both an orientation of above and below. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations) and the spatial descriptors used herein interpreted accordingly.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. The "connection" in the following embodiments is understood as "electrical connection", "communication connection", or the like if the connected circuits, modules, units, or the like have electrical signals or data transmission therebetween.
As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Also, the terminology used in this specification includes any and all combinations of the associated listed items.
In one embodiment, a nebulizer control circuit is provided, and a nebulizer may be a medical or household nebulizer. As shown in fig. 1, the nebulizer control circuit includes a power supply circuit 100, a sensor circuit 200, and a controller 300. The controller 300 is connected to the sensor circuit 200 and the power supply circuit 100, and the power supply circuit 100 is connected to an external power source VCC. When the sensor circuit 200 detects that a person leaves the sensing range, it sends a feedback signal to the controller 300, and after the controller 300 receives the feedback signal, it controls the power supply circuit 100 to disconnect from the external power supply.
The specific type of the controller 300 is not unique, and may be a CPLD (Complex Programmable Logic Device), an FPGA (Field-Programmable Gate Array), or an MCU (micro Control unit), and in this embodiment, the controller 300 is an MCU. The controller 300 and the power supply circuit 100 can be arranged on a mainboard of the atomizer, the power supply circuit 100 is connected to an external power supply VCC to supply power to the controller 300, and the controller 300 controls an atomizing device of the atomizer to atomize the liquid medicine in the liquid medicine box after receiving a starting instruction of a user. Monitor in real time through sensor circuit 200 in the atomizer working process, after sensor circuit 200 detects that the human body takes place to remove and leaves the response scope, send feedback signal to controller 300, controller 300 breaks off power supply circuit 100 and external power source VCC's connection after receiving feedback signal, and the atomizer outage stops work, reduces the extravagant and pollution to the surrounding environment of liquid medicine.
In addition, in one embodiment, the nebulizer control circuit may further include a switch K1, the switch K1 connecting the controller 300 and the external power source VCC. Specifically, the switch K1 can select a tact switch, and the user presses the tact switch to start the operation of the atomizer, and after receiving the feedback signal, the user automatically disconnects the power supply circuit 100 from the external power VCC to stop the operation of the atomizer after power off.
The configuration of the sensor circuit 200 is not exclusive and in one embodiment, the sensor circuit 200 comprises a pyroelectric sensor coupled to the controller 300. The pyroelectric sensor can be specifically arranged on the front panel of the atomizer to detect human body signals, and when a human body moves out of the sensor range, the pyroelectric sensor sends feedback signals to the controller 300. Further, the sensor circuit 200 may further include a first current limiting resistor R2, and the pyroelectric sensor is connected to the controller 300 through the first current limiting resistor R2. One end of the pyroelectric sensor is connected with an external power supply VCC, and the other end of the pyroelectric sensor is connected with a first current limiting resistor R2.
In the nebulizer control circuit, the sensor circuit 200 sends a feedback signal to the controller 300 when detecting that a person leaves the sensing range. After receiving the feedback signal, the controller 300 controls the power supply circuit 100 to disconnect from the external power VCC. When the fact that a person leaves the induction range is detected, the atomizer is powered off to stop working, waste of liquid medicine and pollution to the surrounding environment are reduced, and the use safety of the atomizer is improved.
The specific structure of the power supply circuit 100 is not exclusive, and in one embodiment, as shown in fig. 1, the power supply circuit 100 includes a power supply module and a switch module 110, the power supply module is connected to the controller 300, and the switch module 110 is connected to the controller 300, the power supply module and the external power source VCC. The power supply module may specifically select a DC-DC (direct current-direct current) module, and when the switch module 110 is in a closed state, the accessed current supplies power to the controller 300 through the DC-DC module. When the sensor circuit 200 detects that the human body moves out of the sensing range, the controller 300 controls the switch module 110 to be turned off, and stops supplying the power to the controller 300.
It is to be appreciated that the configuration of the switch module 110 is not exclusive, and in one embodiment, with continued reference to fig. 1, the switch module 110 includes a first switch tube U1, a second switch tube Q1, a first voltage-dividing resistor R3, a second voltage-dividing resistor R4, a second current-limiting resistor R6, and a pull-down resistor R5. The first voltage-dividing resistor R3 and the second voltage-dividing resistor R4 are connected in series, a common end of the first voltage-dividing resistor R4 is connected with a control end of the first switch tube U1, the other end of the first voltage-dividing resistor R3 is connected with an external power supply VCC, and the other end of the second voltage-dividing resistor R4 is connected with a first end of the second switch tube Q1; the first end of the first switch tube U1 is connected to an external power VCC, the second end of the first switch tube U1 is connected to the power supply module, the control end of the second switch tube Q1 is connected to the controller 300 through the second current limiting resistor R6, and is grounded through the pull-down resistor R5, and the second end of the second switch tube Q1 is grounded.
The first switching tube U1 may be a MOS tube or a transistor, and the second switching tube Q1 may also be a MOS tube or a transistor. In this embodiment, the first switch tube U1 is a P-channel MOS tube, and has a gate as a control terminal, a source as a first terminal, and a drain as a second terminal. It is understood that in other embodiments, the first switch tube U1 may be replaced by a PNP transistor. Further, in this embodiment, the second switching transistor Q1 is an NPN transistor, and has a base as a control terminal, a collector as a first terminal, and an emitter as a second terminal. It is understood that in other embodiments, the second switching transistor Q1 may be replaced by an N-channel MOS transistor.
Specifically, one end of the switch K1 is connected to the first end of the first switch tube U1, and the other end of the switch K1 is connected to the controller 300. Similarly, taking the switch K1 as a tact switch as an example, the switch K1 is connected to a tact power supply port of the controller 300, the first current limiting resistor R2 is connected to a pyroelectric sensor signal input port of the controller 300, the DC-DC module is connected to a power switch port of the controller 300, and the second current limiting resistor R6 is connected to a Q1 control I/O port of the controller 300. When the user presses the tact switch, the controller 300 is powered on, the Q1 controls the I/O port to output a high level, the second switch tube Q1 is turned on to turn on the first switch tube U1, the controller 300 is powered on continuously, and the atomizer is in a working state when the second switch tube Q1 is turned on. After the atomizer work, pyroelectric sensor detects human body signal, takes place to remove when the human body and leaves the sensor scope, and pyroelectric sensor sends feedback signal and gives controller 300 this moment, and controller 300 judges that can know that the people has left the atomizer this moment, and controller 300 control second switch tube Q1 disconnection, and then makes the disconnection of first switch tube U1, and the mainboard outage of atomizer, atomizer stop work.
In one embodiment, a nebulizer is also provided, comprising the nebulizer control circuit. Specifically, as shown in fig. 1, the nebulizer control circuit includes a power supply circuit 100, a sensor circuit 200, and a controller 300. The controller 300 is connected to the sensor circuit 200 and the power supply circuit 100, and the power supply circuit 100 is connected to an external power source VCC. In addition, the atomizer control circuit further comprises a switch K1, and the switch K1 is connected with the controller 300 and the external power source VCC.
The controller 300 is an MCU, the sensor circuit 200 includes a pyroelectric sensor and a first current limiting resistor R2, one end of the pyroelectric sensor is connected to an external power VCC, and the other end of the pyroelectric sensor is connected to the controller 300 through the first current limiting resistor R2. The power supply circuit 100 comprises a DC-DC module and a switch module 110, wherein the DC-DC module is connected with the controller 300, and the switch module 110 is connected with the controller 300, the DC-DC module and an external power supply VCC.
Further, the switch module 110 includes a first switch tube U1, a second switch tube Q1, a first voltage dividing resistor R3, a second voltage dividing resistor R4, a second current limiting resistor R6, and a pull-down resistor R5. The first voltage-dividing resistor R3 and the second voltage-dividing resistor R4 are connected in series, a common end of the first voltage-dividing resistor R4 is connected with a control end of the first switch tube U1, the other end of the first voltage-dividing resistor R3 is connected with an external power supply VCC, and the other end of the second voltage-dividing resistor R4 is connected with a first end of the second switch tube Q1; the first end of the first switch tube U1 is connected to an external power VCC, the second end of the first switch tube U1 is connected to the power supply module, the control end of the second switch tube Q1 is connected to the controller 300 through the second current limiting resistor R6, and is grounded through the pull-down resistor R5, and the second end of the second switch tube Q1 is grounded.
Specifically, the switch K1 is a tact switch, the switch K1 is connected to a tact power supply port of the controller 300, the first current limiting resistor R2 is connected to a pyroelectric sensor signal input port of the controller 300, the DC-DC module is connected to a power switch port of the controller 300, and the second current limiting resistor R6 is connected to a Q1 control I/O port of the controller 300. When the user presses the tact switch, the controller 300 is powered on, the Q1 controls the I/O port to output a high level, the second switch tube Q1 is turned on to turn on the first switch tube U1, the controller 300 is powered on continuously, and the atomizer is in a working state when the second switch tube Q1 is turned on. After the atomizer works, the pyroelectric sensor detects a human body signal, when the human body moves away from the sensor range, the pyroelectric sensor sends a feedback signal to the controller 300, the controller 300 judges that the human body leaves the atomizer at the moment, the controller 300 controls the second switch tube Q1 to be disconnected, and then the first switch tube U1 is disconnected, and the atomizer stops working.
In the nebulizer, the sensor circuit 200 sends a feedback signal to the controller 300 when detecting that a person leaves the sensing range. After receiving the feedback signal, the controller 300 controls the power supply circuit 100 to disconnect from the external power VCC. When the fact that a person leaves the induction range is detected, the atomizer is powered off to stop working, waste of liquid medicine and pollution to the surrounding environment are reduced, and the use safety of the atomizer is improved.
To facilitate a better understanding of the nebulizer control circuit and nebulizer, the following detailed description is provided in connection with specific embodiments.
The household atomizer is used for household or individual, especially for old people or children who have poor autoimmunity and are susceptible to air pollution and respiratory diseases. The atomization therapy instrument can be used by oneself directly at home or carried about without running a hospital. Compared with a medical atomizer and a household atomizer, the household atomizer has the advantages that: 1. the treatment in a hospital is not needed; 2. avoiding the possibility of cross infection in the internal environment of the hospital. 3. Less time and money spent; 4. is convenient to carry and operate, and can be used for treating diseases at any time and any place. With the change of living environment, most people are in sub-health state, and the household atomizer becomes a medical product which is portable and used by people at home.
At present, the main users of the household atomizer are all infants, the atomizer is opened when children use the household atomizer, and people walk away, so that the waste of liquid medicine and the pollution of the surrounding environment are caused, and the safety of the atomizer is also reduced. The household atomizer with the human body detection function can identify whether a user leaves after the atomizer works, and if the user leaves, the atomization is stopped. By designing a pyroelectric sensor circuit, when the household atomizer is started and a user leaves, the sensor detects that the user leaves, a signal is provided to the MCU, and the MCU detects that the user leaves, so that safety measures for cutting off the power supply are implemented.
Specifically, the circuit structure of the home nebulizer with human body detection is shown in fig. 1, wherein a pyroelectric sensor is mounted on a front panel of the home nebulizer; the human body detection sensitive element in the pyroelectric sensor senses a human body movement signal and feeds the human body movement signal back to the MCU. VCC is external power supply, as domestic atomizer power supply. R3 and R4 are a first divider resistor and a second divider resistor; r2 and R6 are a first current limiting resistor and a second current limiting resistor; r5 is a pull-down resistor; MCU is as power control chip, and U1, Q1 are first switch tube and second switch tube, play the switching action, and first switch tube specifically is P channel MOS pipe, and available PNP triode is substituted. Switch K1 is the light touch switch, and when the switch pressed, the chip was briefly got electric, and the switch disconnection after the pine hand. When the tact switch is pressed, the chip is powered on, so that the Q1 controls the I/O port to output high level.
The main board of the household atomizer is provided with peripheral circuits such as a sensor circuit, a switch module, a DC-DC circuit and the like. Wherein, pyroelectric sensor installs on domestic atomizer front panel, more accurate discernment human movement signal. The human body detection sensitive element in the pyroelectric sensor senses a human body movement signal and feeds the human body movement signal back to the MCU.
The operation principle of the household atomizer is shown in fig. 2, the chip is powered on after the tact switch is pressed down, so that the Q1 controls the I/O port to output high level, and the chip is powered on continuously; when the second switch tube Q1 is turned on, the domestic atomizer is in an operating state. After the work of domestic atomizer, pyroelectric sensor detects human body signal, takes place to remove when the human body, leaves the sensor scope, and pyroelectric sensor feedback signal gives MCU this moment, and MCU judges that the people can know this moment and has left the atomizer, and MCU control second switch tube Q1 disconnection, mainboard outage, domestic atomizer stop work.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A nebulizer control circuit, comprising:
a power supply circuit;
when detecting that a person leaves the sensing range, sending a feedback signal to a sensor circuit of the controller;
the controller is used for controlling the power supply circuit to be disconnected with an external power supply after receiving the feedback signal;
the controller is connected with the sensor circuit and the power supply circuit, and the power supply circuit is used for being connected with an external power supply.
2. The nebulizer control circuit of claim 1, wherein the sensor circuit comprises a pyroelectric sensor connected to the controller.
3. The nebulizer control circuit of claim 2, wherein the sensor circuit further comprises a first current limiting resistor, the pyroelectric sensor being connected to the controller through the first current limiting resistor.
4. The nebulizer control circuit of claim 1, wherein the power supply circuit comprises a power supply module and a switch module, the power supply module is connected to the controller, and the switch module is connected to the controller, the power supply module and an external power source.
5. The nebulizer control circuit of claim 4, wherein the power supply module is a DC-DC module.
6. The nebulizer control circuit according to claim 4, wherein the switch module comprises a first switch tube, a second switch tube, a first voltage dividing resistor, a second current limiting resistor and a pull-down resistor;
the first voltage-dividing resistor and the second voltage-dividing resistor are connected in series, a common end of the first voltage-dividing resistor is connected with a control end of the first switch tube, the other end of the first voltage-dividing resistor is connected with an external power supply, and the other end of the second voltage-dividing resistor is connected with a first end of the second switch tube; the first end of the first switch tube is connected with an external power supply, the second end of the first switch tube is connected with the power supply module, the control end of the second switch tube is connected with the controller through the second current-limiting resistor and is grounded through the pull-down resistor, and the second end of the second switch tube is grounded.
7. The nebulizer control circuit according to claim 6, wherein the first switching tube is a MOS tube or a triode; the second switch tube is an MOS tube or a triode.
8. The nebulizer control circuit of any one of claims 1-7, further comprising a switch, the switch connecting the controller and an external power source.
9. The nebulizer control circuit of any one of claims 1-7, wherein the controller is an MCU.
10. A nebulizer comprising a nebulizer control circuit according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121303402.0U CN215653161U (en) | 2021-06-10 | 2021-06-10 | Atomizer control circuit and atomizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121303402.0U CN215653161U (en) | 2021-06-10 | 2021-06-10 | Atomizer control circuit and atomizer |
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| Publication Number | Publication Date |
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| CN215653161U true CN215653161U (en) | 2022-01-28 |
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| CN202121303402.0U Active CN215653161U (en) | 2021-06-10 | 2021-06-10 | Atomizer control circuit and atomizer |
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