CN215072351U - Control circuit, circuit board and sterilizer - Google Patents
Control circuit, circuit board and sterilizer Download PDFInfo
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- CN215072351U CN215072351U CN202120744972.7U CN202120744972U CN215072351U CN 215072351 U CN215072351 U CN 215072351U CN 202120744972 U CN202120744972 U CN 202120744972U CN 215072351 U CN215072351 U CN 215072351U
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Abstract
The invention discloses a control circuit, comprising: the sensing module comprises a first sensing circuit and a second sensing circuit, the first sensing circuit and the second sensing circuit are respectively connected with the controller, the first sensing circuit comprises a first sensing element, the second sensing circuit comprises a second sensing element, the first sensing element and the second sensing element change the parameter value of the first sensing element and the second sensing element according to the change of the ambient environment parameters, and the controller determines a control signal according to the parameter value. Through the inductive value that acquires first inductive circuit and return and the inductive value that the second inductive circuit returned, produce control signal in order to control external circuit work, through setting up first inductive circuit and second inductive circuit, improve the accuracy that triggers control signal, the accuracy of circuit work is high, the facilitate promotion.
Description
Technical Field
The invention relates to the technical field of disinfection equipment, in particular to a control circuit, a circuit board and a sterilizer.
Background
In a sterilizer, an air purifier, or the like, a control circuit often senses an environmental state through a sensing circuit when a sterilization function, a humidification function, or the like is turned on, and a sensing value returned by the sensing circuit is compared with a pre-stored preset value to generate a trigger signal. In the prior art, the accuracy of the induction circuit is low, the condition of false triggering is easily caused, the energy of devices such as a sterilizer and an air purifier is wasted, and the sustainable development is not facilitated.
Disclosure of Invention
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a control circuit can improve the accuracy of triggering control signal, and the accuracy of circuit work is high, the facilitate promotion.
The utility model discloses propose simultaneously containing above-mentioned control circuit's circuit board and sterilizer.
According to the utility model discloses control circuit of first aspect embodiment includes: the sensing module comprises a first sensing circuit and a second sensing circuit, the first sensing circuit and the second sensing circuit are respectively connected with the controller, the first sensing circuit comprises a first sensing element, the second sensing circuit comprises a second sensing element, the first sensing element and the second sensing element change the parameter value of the first sensing element and the second sensing element according to the change of the ambient environment parameters, and the controller determines a control signal according to the parameter value.
According to the utility model discloses control circuit of first aspect embodiment has following beneficial effect at least: through the inductive value that acquires first inductive circuit and return and the inductive value that the second inductive circuit returned, produce control signal in order to control external circuit work, through setting up first inductive circuit and second inductive circuit, improve the accuracy that triggers control signal, the accuracy of circuit work is high, the facilitate promotion.
According to some embodiments of the first aspect of the present invention, the first sensing circuit and the second sensing circuit are voltage dividing circuits, the parameter value that the first sensing element changes is a resistance value, and the parameter value that the second sensing element changes is a resistance value.
According to some embodiments of the first aspect of the present invention, the first sensing circuit includes a first resistor and a second resistor, the first resistor the second resistor and the first signal transmission pin of the controller are connected in sequence, the other end of the first resistor is connected to the ground, one end of the first sensing element is connected to the power supply, and the other end of the first sensing element is connected to the connection point of the first resistor and the second resistor.
According to some embodiments of the first aspect of the present invention, the second sensing circuit includes a third resistor and a fourth resistor, the third resistor, the fourth resistor and the second signal transmission pin of the controller are connected in sequence, the other end of the third resistor is connected to the ground, one end of the second sensing element is connected to the power supply, and the other end of the second sensing element is connected to the connection point of the third resistor and the fourth resistor.
According to the utility model discloses some embodiments of first aspect still include first electric capacity group and second electric capacity group, first electric capacity group connects in parallel the first resistance with the both ends of the circuit after the second resistance is established ties, the second electric capacity group connects in parallel the third resistance with the both ends of the circuit after the fourth resistance is established ties.
According to the utility model discloses some embodiments of first aspect still include the switch module that is used for communicateing the external circuit, switch module with the third output pin of controller is connected, with the basis break-make of control signal control self.
According to the utility model discloses some embodiments of the first aspect, switch module includes fifth resistance, first triode and first relay, the third output pin of controller the fifth resistance first triode with first relay and power connect gradually, first triode is the NPN triode, the base of first triode with fifth resistance connects, the projecting pole ground connection of first triode, the collecting electrode of first triode with the relay is connected.
According to some embodiments of the first aspect of the present invention, the controller further comprises an indication circuit, the indication circuit is connected to the fourth signal transmission pin of the controller.
According to the utility model discloses circuit board of second aspect embodiment, include: the utility model discloses the circuit of first aspect embodiment, first inductive element with second inductive element sets up respectively the two sides of circuit board.
According to the utility model discloses circuit board of second aspect embodiment has following beneficial effect at least: first sensing element sets up respectively on the both sides of circuit board with the second sensing element, and in the different environment was arranged in respectively to first sensing element of being convenient for and second sensing element, first sensing element and second sensing element produced different parameter values, made first induction circuit and second induction circuit return different induction value to produce control signal in order to control outer circuit work, improve the accuracy of triggering control signal, the accuracy of circuit board work is high, the facilitate promotion.
According to the utility model discloses sterilizer of third aspect embodiment includes: the utility model discloses the circuit board of second aspect embodiment still includes the casing, the circuit board set up in inside the casing.
According to the utility model discloses sterilizer of third aspect embodiment has following beneficial effect at least: through setting up first induction circuit and second induction circuit, improve the accuracy of triggering control signal to trigger the automatic sterilization of sterilizer. Through set up the casing in the circuit board outside, prevent that material such as external water, dust from contacting the circuit board to the life of extension circuit board.
According to some embodiments of the third aspect of the present invention, the first sensing element is disposed in a first region of the housing, the second sensing element is disposed in a second region of the housing, the first region is a region directly contacting with the outside air, and the second region is a region isolated from the outside air.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
Additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a circuit diagram of a control circuit of an embodiment of the present invention;
fig. 2 is a schematic diagram of a circuit board according to an embodiment of the present invention;
fig. 3 is a schematic view of a sterilizer according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, if there are first and second descriptions for distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
The embodiments of the present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1, an embodiment of a first aspect of the present invention provides a control circuit, including: the sensing module comprises a first sensing circuit and a second sensing circuit, the first sensing circuit and the second sensing circuit are respectively connected with the controller U1, the first sensing circuit comprises a first sensing element P1, the second sensing circuit comprises a second sensing element P2, the first sensing element P1 and the second sensing element P2 change the parameter values of the sensing module according to the change of the ambient environment parameters, and the controller U1 determines a control signal according to the parameter values. Through the inductive value that acquires first inductive circuit and return and the inductive value that the second inductive circuit returned, produce control signal in order to control external circuit work, through setting up first inductive circuit and second inductive circuit, improve the accuracy that triggers control signal, the accuracy of circuit work is high, the facilitate promotion.
Specifically, the first sensing circuit generates a sensing value according to a parameter value of the first sensing element P1, the second sensing circuit generates a sensing value according to a parameter value of the second sensing element P2, and the controller U1 reads the sensing value of the first sensing circuit and the sensing value returned by the second sensing circuit and calculates the two sets of sensing values respectively, where the calculation method may be to take a difference between the two sets of sensing values to obtain a difference between the environments measured by the first sensing circuit and the second sensing circuit, or to take an average between the sensing value of the first sensing circuit and the sensing value of the second sensing circuit to obtain an average sensing value in the measured environment.
It is understood that the control circuit may further include a third sensing circuit, a fourth control circuit, and the like, and the number of the control circuits is not particularly limited in this embodiment.
It should be noted that the first sensing circuit and the second sensing circuit are voltage dividing circuits, the parameter value changed by the first sensing element P1 is a resistance value, and the parameter value changed by the second sensing element P2 is a resistance value.
It is understood that the first sensing element P1 and the second sensing element P2 may be various components such as a thermistor and a photo resistor, and the present embodiment is not limited thereto. When the first and second sensing elements P1 and P2 are thermistors, the sensing values of the first and second sensing circuits change with the change of the ambient temperature around the first and second sensing elements P1 and P2.
It should be noted that the first sensing circuit includes a first resistor R1 and a second resistor R2, the first resistor R1, the second resistor R2 and the first signal transmission pin 14 of the controller U1 are sequentially connected, the other end of the first resistor R1 is connected to the ground, one end of the first sensing element P1 is connected to the power supply, and the other end of the first sensing element P1 is connected to a connection point of the first resistor R1 and the second resistor R2.
It should be noted that the second sensing circuit includes a third resistor R3 and a fourth resistor R4, the third resistor R3, the fourth resistor R4 and the second signal transmission pin 6 of the controller U1 are sequentially connected, the other end of the third resistor R3 is connected to the ground, one end of the second sensing element P2 is connected to the power supply, and the other end of the second sensing element P2 is connected to a connection point of the third resistor R3 and the fourth resistor R4.
It should be noted that the capacitive touch panel further includes a first capacitor bank C1 and a second capacitor bank C2, the first capacitor bank C1 is connected in parallel to two ends of a circuit formed by connecting a first resistor R1 and a second resistor R2 in series, the second capacitor bank C2 is connected in parallel to two ends of a circuit formed by connecting a third resistor R3 and a fourth resistor R4 in series, noise transmitted to the controller U1 by the first capacitor bank C1 is filtered, and noise transmitted to the controller U1 by the second inductor circuit is filtered by the second capacitor bank C2, so that the sensing values received by the controller U1 from the first transmission pin and the second transmission pin are more stable and accurate.
It is understood that the first capacitor bank C1 includes one capacitor or a plurality of capacitors, for example, when the first capacitor bank C1 includes one capacitor, one capacitor is connected in parallel across the first sensing circuit, and when the first capacitor bank C1 includes a plurality of capacitors, two or more capacitors are connected in parallel across the first sensing circuit. When the second capacitor group C2 includes one capacitor or a plurality of capacitors, and when the second capacitor group C2 includes one capacitor, one capacitor is connected in parallel to both ends of the second sensing circuit, and when the second capacitor group C2 includes a plurality of capacitors, two or more capacitors are connected in parallel to both ends of the second sensing circuit.
It should be noted that the electronic device further includes a switch module for communicating with an external circuit, and the switch module is connected to the third output pin 17 of the controller U1 to control on/off of the switch module according to a control signal.
Specifically, the controller U1 outputs a high level or a low level through the third output pin 17 according to the sensing value, for example, when the third output pin 17 outputs a high level, the switch module is in a connected state, and when the difference between the sensing values returned by the first sensing circuit and the second sensing circuit is greater than a value preset in the controller U1, the third output pin 17 is controlled to output a high level, so that the switch module is connected.
It can be understood that the components in the switch module for implementing the switching function are weak current control switches, such as field effect transistors, triodes, or relays.
It can be understood that the switch module is connected with an external circuit, and the on and off of the external circuit are controlled by the on and off of the switch module.
It should be noted that the switch module includes a fifth resistor R5, a first triode Q1 and a first relay K1, the third output pin 17 of the controller U1, the fifth resistor R5, the first triode Q1 and the first relay K1 are sequentially connected to the power supply, the first triode Q1 is an NPN triode, the base of the first triode Q1 is connected to the fifth resistor R5, the emitter of the first triode Q1 is grounded, and the collector of the first triode Q1 is connected to the relay.
In one embodiment, the first sensing element P1 and the second sensing element P2 have the same type, the first resistor R1 and the third resistor R3 have the same resistance, the second resistor R2 and the fourth resistor R4 have the same resistance, and the first sensing module and the second sensing module have the same power value.
It should be noted that an indication circuit (not shown in the figure) is further included, and the indication circuit is connected to the fourth signal transmission pin of the controller U1.
It is understood that the indicating circuit may be an acousto-optic display circuit including an indicator light, a sound module, etc. Controller U1 compares received first induction circuit with second induction circuit's inductive value, and inductive value when first induction circuit is the same with second induction circuit's inductive value, and reputation display circuit is first state, if, the pilot lamp is green, the sound module does not start, and inductive value when first induction circuit is different with second induction circuit's inductive value, and reputation display circuit is the second state, if, the pilot lamp is red, the sound module is opened and is reported first instruction.
Referring to fig. 2, a circuit board 300 according to an embodiment of the second aspect of the present invention includes: in the circuit of the embodiment of the first aspect of the present invention, the first sensing element 310 and the second sensing element 320 are respectively disposed on two sides of the circuit board 300. The first sensing element 310 and the second sensing element 320 are respectively arranged on two sides of the circuit board 300, so that the first sensing element 310 and the second sensing element 320 are respectively arranged in different environments, the first sensing element 310 and the second sensing element 320 generate different parameter values, and the first sensing circuit and the second sensing circuit return different sensing values, thereby generating a control signal to control the work of an external circuit, improving the accuracy of triggering the control signal, having high working accuracy of the circuit board 300 and being convenient for popularization.
Referring to fig. 3, a sterilizer 400 according to an embodiment of the third aspect of the present invention includes: the utility model discloses the circuit board of second aspect embodiment still includes the casing, and the circuit board sets up inside the casing. Through setting up first induction circuit and second induction circuit, improve the accuracy of triggering control signal to trigger sterilizer 400 automatic sterilization. Through set up the casing in the circuit board outside, prevent that material such as external water, dust from contacting the circuit board to the life of extension circuit board.
It should be noted that the first sensing element 310 is disposed in a first region of the housing, and the second sensing element 320 is disposed in a second region of the housing, where the first region is a region directly contacting with the outside air and the second region is a region isolated from the outside air.
Specifically, the first sensing element 310 is disposed in a first region of the case, the second sensing element 320 is disposed in a second region of the case, the first region is a region directly contacted with the external air, the second region is a region isolated from the external air, the first sensing element 310 and the second sensing element 320 are both thermistors, when the air around the sterilizer 400 changes, an air flow is formed to flow through the first sensing element 310, the resistance value of the first sensing element 310 changes along with the flow of the air, the second sensing element 320 does not contact with the outside air, the resistance value of the second sensing element 320 does not change, the controller receives different sensing values of the first sensing circuit and the second sensing circuit, when the difference between the sensed values reaches a preset value preset by the controller, the controller changes the operating state of a part of circuits connected with the controller, thereby realizing that the sterilizer 400 automatically starts sterilization.
In one embodiment, the case comprises a case body and a hollow body, the case body is disposed under the hollow body, a first region is defined by a volume enclosed by the hollow body, a second region is defined by an interior of the case body, the circuit board is disposed in the case body, the module with the sterilization function of the sterilizer 400 is located in the hollow body, the first sensing element 310 is disposed in the hollow body, the second sensing element 320 is disposed in the case body, when air around the sterilizer 400 changes, an air flow is formed to flow through the first sensing element 310, the resistance value of the first sensing element 310 changes along with the flow of the air, the second sensing element 320 does not contact with the outside air, the resistance value of the second sensing element 320 does not change, the controller receives different sensing values from the first sensing circuit and the second sensing circuit, when the difference between the sensing values reaches a preset value in the controller, the controller controls the module with the sterilization function to sterilize, thereby realizing that the sterilizer 400 automatically starts the sterilization work.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge scope of those skilled in the art.
Claims (10)
1. A control circuit, comprising: the sensing module comprises a first sensing circuit and a second sensing circuit, the first sensing circuit and the second sensing circuit are respectively connected with the controller, the first sensing circuit comprises a first sensing element, the second sensing circuit comprises a second sensing element, the first sensing element and the second sensing element change the parameter value of the first sensing element and the second sensing element according to the change of the ambient environment parameters, and the controller determines a control signal according to the parameter value.
2. The control circuit of claim 1, wherein the first sensing circuit and the second sensing circuit are voltage divider circuits, the first sensing element changes a value of a resistance, and the second sensing element changes a value of a resistance.
3. The control circuit of claim 2, wherein the first sensing circuit comprises a first resistor and a second resistor, the first resistor, the second resistor and the first signal transmission pin of the controller are sequentially connected, the other end of the first resistor is connected to a ground, one end of the first sensing element is connected to a power supply, and the other end of the first sensing element is connected to a connection point of the first resistor and the second resistor.
4. The control circuit of claim 2, wherein the second sensing circuit comprises a third resistor and a fourth resistor, the third resistor, the fourth resistor and the second signal transmission pin of the controller are sequentially connected, the other end of the third resistor is connected to a ground, one end of the second sensing element is connected to a power supply, and the other end of the second sensing element is connected to a connection point of the third resistor and the fourth resistor.
5. The control circuit of claim 1, further comprising a first capacitor bank and a second capacitor bank, wherein the first capacitor bank is connected in parallel across the circuit formed by the series connection of the first resistor and the second resistor, and the second capacitor bank is connected in parallel across the circuit formed by the series connection of the third resistor and the fourth resistor.
6. The control circuit according to claim 1, further comprising a switch module for communicating with an external circuit, wherein the switch module is connected to the third output pin of the controller to control on/off of the switch module according to the control signal.
7. The control circuit according to claim 6, wherein the switch module includes a fifth resistor, a first transistor, and a first relay, the third output pin of the controller, the fifth resistor, the first transistor, the first relay and a power supply are connected in sequence, the first transistor is an NPN transistor, a base of the first transistor is connected to the fifth resistor, an emitter of the first transistor is grounded, and a collector of the first transistor is connected to the relay.
8. A circuit board comprising the control circuit according to any one of claims 1 to 7, wherein the first sensing element and the second sensing element are respectively disposed on both sides of the circuit board.
9. A sterilizer comprising the circuit board of claim 8, and further comprising a housing, said circuit board being disposed within said housing.
10. The sterilizer of claim 9, wherein said first sensing element is disposed within a first region of said housing, said second sensing element is disposed within a second region of said housing, said first region being a region in direct contact with ambient air, said second region being a region isolated from ambient air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120744972.7U CN215072351U (en) | 2021-04-12 | 2021-04-12 | Control circuit, circuit board and sterilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120744972.7U CN215072351U (en) | 2021-04-12 | 2021-04-12 | Control circuit, circuit board and sterilizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215072351U true CN215072351U (en) | 2021-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120744972.7U Active CN215072351U (en) | 2021-04-12 | 2021-04-12 | Control circuit, circuit board and sterilizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215072351U (en) |
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2021
- 2021-04-12 CN CN202120744972.7U patent/CN215072351U/en active Active
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