CN215453350U - Three-color lamp control circuit and household appliance - Google Patents
Three-color lamp control circuit and household appliance Download PDFInfo
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- CN215453350U CN215453350U CN202121418743.2U CN202121418743U CN215453350U CN 215453350 U CN215453350 U CN 215453350U CN 202121418743 U CN202121418743 U CN 202121418743U CN 215453350 U CN215453350 U CN 215453350U
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Abstract
The embodiment of the application relates to a three-color lamp control circuit and a household appliance. The three-color lamp control circuit comprises a three-color lamp, an anode control circuit connected with a common anode of the three-color lamp, and three cathode control circuits, wherein the three cathode control circuits are respectively connected with three cathodes of the three-color lamp; the anode control circuit is used for connecting a switching voltage to a common anode of the three-color lamp when receiving a high level output by the MCU, so that the common anode is in a high potential state; and the cathode control circuit is used for enabling the cathode of the three-color lamp connected with the cathode control circuit to be in a low potential state when receiving the high level output by the MCU so as to light the lamp connected with the cathode in the three-color lamp. The three-color lamp control circuit and the household appliance can achieve the function of light reminding.
Description
Technical Field
The embodiment of the application relates to the technical field of light control circuits, in particular to a three-color lamp control circuit and a household appliance.
Background
With the increasing living standard of people, the pet breeding becomes fashionable. The traditional pet water drinking device is usually a container such as a plate or a bowl, bacteria and dust are easily bred in standing water in the plate, the standing water is not beneficial to the health of pets, and meanwhile, people are required to observe the water level all the time and add water at regular time, which is a trouble for the fast-paced young generation.
Therefore, a pet water dispenser with a light reminding function is urgently needed to remind a user of adding water, replacing a filter element and the like.
Disclosure of Invention
The embodiment of the application provides a three-color lamp control circuit and a household appliance, which can realize a light reminding function.
In a first aspect, an embodiment of the present application provides a three-color lamp control circuit, including:
the three-color lamp, the anode control circuit connected with the common anode of the three-color lamp, and the three cathode control circuits are respectively connected with the three cathodes of the three-color lamp;
the anode control circuit is used for connecting a switching voltage to a common anode of the three-color lamp when receiving a high level output by the MCU, so that the common anode is in a high potential state;
and the cathode control circuit is used for enabling the cathode of the three-color lamp connected with the cathode control circuit to be in a low potential state when receiving the high level output by the MCU so as to light the lamp connected with the cathode in the three-color lamp.
Optionally, the anode control circuit includes a first triode and a second triode, and when the anode control circuit receives the high level output by the MCU, the first triode and the second triode are turned on.
Optionally, the first triode is an NPN-type triode, a base of the NPN-type triode is connected to an IO interface pin of the MCU, a collector of the NPN-type triode is connected to a base of the second triode, and an emitter of the NPN-type triode is grounded.
Optionally, the second triode is a PNP triode, a base of the PNP triode is connected to a collector of the first triode, a collector of the PNP is connected to a common anode of the three-color lamp, and a collector of the PNP is connected to the input end of the switching voltage.
Optionally, a first capacitor is connected in parallel between the base and the emitter of the first triode for filtering the electrical fast transient pulse train.
Optionally, the cathode control circuit includes a third triode, and when the cathode control circuit receives the high level output by the MCU, the third triode is turned on.
Optionally, the third triode is an NPN type triode, a base of the NPN type triode is connected with an LED control pin of the MCU, an emitter of the NPN type triode is grounded, and a collector of the NPN type triode is connected with a cathode of the tristimulus lamp.
Optionally, a first capacitor is connected in parallel between the base and the emitter of the third triode for filtering the electrical fast transient pulse train.
Optionally, a first resistor is connected in series between a base of a first triode of the anode control circuit and an IO interface pin of the MCU;
a second resistor is connected in parallel between the base electrode and the emitting electrode of a second triode of the anode control circuit;
and a third resistor is connected between the base electrode of a third triode of the cathode control circuit and the LED control pin of the MCU in series, and a fourth resistor is connected between the collector and the cathode of the three-color lamp.
In a second aspect, an embodiment of the present application provides a household appliance, including the three-color lamp control circuit described in the first aspect of the embodiment of the present application.
In the embodiment of the application, by providing a three-color lamp, an anode control circuit and three cathode control circuits, and the anode control circuit and the cathode control circuit are respectively in signal connection with the MCU, when the MCU outputs a high level to the anode control circuit and the cathode control circuit, a switching voltage is connected from the anode control circuit, and lights one path of light of the three-color lamp connected to the corresponding cathode control circuit, so as to remind a user of a reminder item corresponding to the light.
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Drawings
FIG. 1 is a schematic diagram of a three color lamp control circuit provided in an exemplary embodiment;
fig. 2 is a schematic diagram of a three-color lamp control circuit provided in an exemplary embodiment.
Fig. 3 is a schematic diagram of a three-color lamp control circuit provided in an exemplary embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
It should be understood that the embodiments described are only some embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the embodiments in the present application.
The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the present application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the application, as detailed in the appended claims. In the description of the present application, it is to be understood that the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not necessarily used to describe a particular order or sequence, nor are they to be construed as indicating or implying relative importance. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
Further, in the description of the present application, "a plurality" means two or more unless otherwise specified. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
To the above-mentioned technical problem mentioned in the background art, this application embodiment provides a three-color lamp control circuit, when the circumstances such as the emergence lacks water, needs the renew cartridge, can realize the warning to the user through the change of control light. Meanwhile, the application of the three-color lamp control circuit in the embodiment of the application is not limited to a pet water dispenser, and any household appliance needing reminding functions, such as an electric cooker, an oven, a water dispenser, an air purifier, a humidifier, a water boiling kettle and the like, can be suitable for the three-color lamp control circuit in the embodiment of the application.
In a specific example, as shown in fig. 1, the three-color lamp control circuit of the embodiment of the present application includes:
the three-color lamp, the anode control circuit connected with the common anode of the three-color lamp, and the three cathode control circuits are respectively connected with the three cathodes of the three-color lamp.
The anode control circuit is used for connecting a switching voltage to a common anode of the three-color lamp when receiving a high level output by the MCU, so that the common anode is in a high potential state;
and the cathode control circuit is used for enabling the cathode of the three-color lamp connected with the cathode control circuit to be in a low potential state when receiving the high level output by the MCU so as to light the lamp connected with the cathode in the three-color lamp. The high level is shown by the arrow in the figure.
Wherein, preferably, the three-color lamp is an integrated three-color lamp, and the driving voltage of the integrated three-color lamp is + 5V. The integrated three-color lamp has high brightness and no glare.
The common anode of the three-color lamp is the common connection point of the anodes 1, 2, 3 of the three-color lamp. The three cathode control circuits are respectively connected with cathodes 4, 5 and 6 of the three-color lamp. That is, when the tricolor lamp of this application is connected with MCU, only need on MCU reserve four interface pins can, wherein, an interface pin with positive pole control circuit's reservation wiring end is connected, and then the realization with tie point's connection, other three interface pin is connected with three cathode control circuit's reservation wiring end respectively, so, the tricolor lamp of this application embodiment occupies MCU's IO interface less, also is suitable for equally in the limited MCU of part IO interface, has expanded the use scene.
As shown in fig. 2, the anode control circuit includes a first transistor Q1 and a second transistor Q2, and when the anode control circuit receives a high level output by the MCU, the first transistor Q1 and the second transistor Q2 are turned on.
Specifically, the first triode Q1 is an NPN type triode, a base thereof is connected to the IO interface pin COM of the MCU, a collector thereof is connected to the base of the second triode, and an emitter thereof is grounded.
The second triode Q2 is a PNP triode, the base electrode of the second triode Q2 is connected with the collector electrode of the first triode Q1, the collector electrode of the second triode Q1 is connected with the common anode of the three-color lamp, the emitter electrode of the second triode Q2 is connected with the access end of the switching voltage, and the access end of the switching voltage is externally connected with a voltage module.
A first capacitor C1 is connected in parallel between the base and emitter of the first transistor Q1 for filtering electrical fast transient bursts.
A first resistor R1 is connected in series between the base of the first triode Q1 and the IO interface pin COM of the MCU; a second resistor R2 is connected in parallel between the base and the emitter of the second transistor Q2.
When the MCU inputs a high level signal from the IO interface pin COM, the first transistor Q1 is turned on to make the collector of the first transistor Q1 at a low potential, and then the second transistor Q2 is turned on, and the external voltage module inputs a switching voltage Vout to the common anode of the tri-color lamp to make the common anode of the tri-color lamp at a high potential. Preferably, the switching voltage Vout is + 5V.
As shown in fig. 2, the cathode control circuit includes a third transistor Q3, and when the cathode control circuit receives a high level output by the MCU, the third transistor is turned on.
Specifically, the third triode Q3 is an NPN type triode, and has a base connected to the LED control pin LED1 of the MCU, an emitter grounded, and a collector connected to the cathode 4 of the three-color lamp.
A first capacitor C2 is connected in parallel between the base and emitter of the third transistor Q3 for filtering electrical fast transient bursts.
And a third resistor R6 is connected in series between the LED1 between the base of a third triode Q3 of the cathode control circuit and the LED control pin of the MCU, and a fourth resistor R3 is connected between the collector and the cathode of the three-color lamp.
Similarly, because there is a three-way cathode control circuit, the embodiment of the present application further includes third transistors Q4, Q5, LED control pins LED2 and LED3, first capacitors C3 and C4, third resistors R7 and R8, and fourth resistors R4 and R5.
When the MCU inputs a high level signal from the LED control pin, the third triode is conducted, at the moment, the base electrode of the third triode is in a high potential state, and the collector electrode of the third triode is in a low potential state, namely, the cathode of the three-color lamp connected with the cathode control circuit is in a low potential state.
Because the common anode is in a high potential state, when the third triode of one of the cathode control circuits is conducted, the cathode of the three-color lamp connected with the cathode control circuit is in a low potential state, and the anode is in a high potential state and the cathode is in a low potential state, the lamp circuit of the three-color lamp connected with the anode and the cathode is conducted, and the lamp on the circuit is lightened.
The three-color lamp control circuit of the embodiment of the application has the advantages that required components are few, the control of the three-color lamp can be realized only by eight resistors, four capacitors, five triodes and the three-color lamp, the circuit is suitable for a PCB with limited space, and the use scene of the three-color lamp control circuit is expanded.
Furthermore, when one more three-color lamp needs to be controlled, the control can be realized by only adding one three-color lamp, two triodes, two capacitors and one resistor; the space requirement on the PCB is low.
In some embodiments, as shown in fig. 3, two anode control circuits, two three-color lamps and three cathode control circuits are included. The two three-color lamps respectively correspond to different matters, for example, in the pet water dispenser, the light change of one three-color lamp corresponds to the water quantity normal, water shortage and no-water modes of the pet water dispenser and is used for prompting by the three light of the three-color lamp; the other three-color lamp corresponds to the normal and replacement modes of the filter element of the pet water dispenser.
The embodiment of the application also provides a household appliance, which comprises the three-color lamp control circuit in any one of the above embodiments.
The household appliance can be, for example, an electric cooker, an oven, a water dispenser, an air purifier, a humidifier, a water boiling kettle and the like, and in one example, the electric appliance is a pet water dispenser.
It is to be understood that the embodiments of the present application are not limited to the precise arrangements described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the embodiments of the present application is limited only by the following claims.
The above-mentioned embodiments only express a few embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, variations and modifications can be made without departing from the concept of the embodiments of the present application, and these embodiments are within the scope of the present application.
Claims (10)
1. A three-color lamp control circuit, comprising:
the three-color lamp, the anode control circuit connected with the common anode of the three-color lamp, and the three cathode control circuits are respectively connected with the three cathodes of the three-color lamp;
the anode control circuit is used for connecting a switching voltage to a common anode of the three-color lamp when receiving a high level output by the MCU, so that the common anode is in a high potential state;
and the cathode control circuit is used for enabling the cathode of the three-color lamp connected with the cathode control circuit to be in a low potential state when receiving the high level output by the MCU so as to light the lamp connected with the cathode in the three-color lamp.
2. The three-color lamp control circuit of claim 1, wherein:
the anode control circuit comprises a first triode and a second triode, and when the anode control circuit receives the high level output by the MCU, the first triode and the second triode are conducted.
3. The three-color lamp control circuit of claim 2, wherein:
the first triode is an NPN type triode, the base electrode of the first triode is connected with the IO interface pin of the MCU, the collector electrode of the first triode is connected with the base electrode of the second triode, and the emitting electrode of the first triode is grounded.
4. The three-color lamp control circuit of claim 2, wherein:
the second triode is a PNP triode, the base electrode of the second triode is connected with the collector electrode of the first triode, the collector electrode of the second triode is connected with the common anode of the three-color lamp, the emitter electrode of the second triode is connected with the access end of the switching voltage, and the access end of the switching voltage is externally connected with a voltage module.
5. The three-color lamp control circuit of claim 3, wherein:
a first capacitor is connected in parallel between the base and emitter of the first transistor for filtering the electrical fast transient pulse packet.
6. The three-color lamp control circuit of claim 1, wherein:
and the cathode control circuit comprises a third triode, and when the cathode control circuit receives the high level output by the MCU, the third triode is conducted.
7. The three-color lamp control circuit of claim 6, wherein:
the third triode is an NPN triode, the base electrode of the third triode is connected with the LED control pin of the MCU, the emitting electrode of the third triode is grounded, and the collecting electrode of the third triode is connected with the cathode of the three-color lamp.
8. The three-color lamp control circuit of claim 6, wherein:
and a first capacitor is connected in parallel between the base electrode and the emitter electrode of the third triode and is used for filtering the electric fast transient pulse group.
9. The three-color lamp control circuit of claim 1, wherein:
a first resistor is connected in series between the base electrode of the first triode of the anode control circuit and the IO interface pin of the MCU;
a second resistor is connected in parallel between the base electrode and the emitting electrode of a second triode of the anode control circuit;
and a third resistor is connected between the base electrode of a third triode of the cathode control circuit and the LED control pin of the MCU in series, and a fourth resistor is connected between the collector and the cathode of the three-color lamp.
10. A household appliance, characterized by:
comprising a three-color lamp control circuit as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121418743.2U CN215453350U (en) | 2021-06-24 | 2021-06-24 | Three-color lamp control circuit and household appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121418743.2U CN215453350U (en) | 2021-06-24 | 2021-06-24 | Three-color lamp control circuit and household appliance |
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| Publication Number | Publication Date |
|---|---|
| CN215453350U true CN215453350U (en) | 2022-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121418743.2U Active CN215453350U (en) | 2021-06-24 | 2021-06-24 | Three-color lamp control circuit and household appliance |
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| CN (1) | CN215453350U (en) |
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- 2021-06-24 CN CN202121418743.2U patent/CN215453350U/en active Active
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