CN215642317U - Timing switch control circuit, circuit board and air purifier - Google Patents
Timing switch control circuit, circuit board and air purifier Download PDFInfo
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- CN215642317U CN215642317U CN202122052611.9U CN202122052611U CN215642317U CN 215642317 U CN215642317 U CN 215642317U CN 202122052611 U CN202122052611 U CN 202122052611U CN 215642317 U CN215642317 U CN 215642317U
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Abstract
The application discloses time switch control circuit, circuit board and air purifier relates to daily electrical apparatus technical field, and wherein, the time switch control circuit that this application provided includes: the main control module is used for sending a timing signal according to preset timing time; the timing module is connected with the main control module and provided with a power supply port, and the power supply port is used for being connected with an external power supply to supply power to the timing module; the timing module is used for receiving a timing signal sent by the main control module and responding to and outputting a control signal to the main control module, and the main control module is used for controlling the working time of the air purifier according to the control signal; and the charging and discharging module comprises a charging and discharging capacitor, the positive end of the charging and discharging capacitor is connected with the power supply port, the negative end of the charging and discharging capacitor is grounded, and the charging and discharging capacitor can supply power to the timing module. This application can control air purifier's on-off time and cost are lower.
Description
Technical Field
The application relates to the technical field of daily electric appliances, in particular to a timing switch control circuit, a circuit board and an air purifier.
Background
An air cleaner, also known as an air cleaner, an air freshener, or a purifier, is a product capable of adsorbing, decomposing, or converting various air pollutants (generally including PM2.5, dust, pollen, odor, formaldehyde, and other decoration pollutants, bacteria, allergens, and the like), and effectively improving air cleanliness, and is mainly classified into household, commercial, industrial, and the like. At present, the timing time of the air purifier can be set by means of terminal equipment such as a mobile phone, so that the time point of the on-off of the air purifier is controlled, but the cost is higher by means of the control mode of the terminal equipment.
SUMMERY OF THE UTILITY MODEL
The present application is directed to solving at least one of the problems in the prior art. Therefore, the application provides a time switch control circuit, circuit board and air purifier, can control air purifier's on-off time and cost are lower.
In a first aspect, the present application provides a timing switch control circuit, comprising:
the main control module is used for sending a timing signal according to preset timing time;
the timing module is connected with the main control module and provided with a power supply port which is used for being connected with an external power supply to supply power to the timing module; the timing module is used for receiving a timing signal sent by the main control module and responding to and outputting a control signal to the main control module, and the main control module is used for controlling the working time of the air purifier according to the control signal;
the timing module comprises a timing module, a charging and discharging module and a control module, wherein the charging and discharging module comprises a charging and discharging capacitor, the positive end of the charging and discharging capacitor is connected with the power supply port, the negative end of the charging and discharging capacitor is grounded, and the charging and discharging capacitor can supply power to the timing module.
The timing switch control circuit according to the embodiment of the first aspect of the present application has at least the following beneficial effects: before the air purifier is used, the timing module presets the timing time of the timing module through the main control module, timing signals are sent to the timing module, the timing module receives the timing signals sent by the main control module and responds to the timing signals to output control signals to the main control module, and the main control module controls the working time of the air purifier according to the control signals. When the air purifier works, the timing module is powered by an external power supply, so that the timing module can finish timing work to control the air purifier to shut down when reaching the corresponding time, and meanwhile, the external power supply also charges a charge-discharge capacitor; when air purifier closed, charge-discharge electric capacity then supplies power for timing module through the mode of discharging to guarantee that timing module can also accomplish timing work under the power off state, restart when reaching the time that corresponds and carry out work with control air purifier, air purifier's on-off time can be controlled in this application, and the circuit is simple, and the cost is lower when preparation and production.
According to some embodiments of the first aspect of the present application, the timing module includes a clock timing chip, an oscillator circuit, an oscillator input terminal and an oscillator output terminal of the clock timing chip are respectively connected to the oscillator circuit, an interrupt output terminal, a ground terminal and a clock output terminal of the clock timing chip are all grounded, a serial clock input terminal and a serial data terminal of the clock timing chip are connected to the main control module, and a positive power source terminal of the clock timing chip is connected to the power supply port.
According to some embodiments of the first aspect of the present application, the oscillator circuit includes a first capacitor, a second capacitor, a crystal oscillator, and a first resistor, one end of the first capacitor is grounded, and the other end is connected to the oscillator input, one end of the crystal oscillator, and one end of the first resistor, one end of the second capacitor is grounded, and the other end is connected to the oscillator output, the other end of the crystal oscillator, and the other end of the first resistor.
According to some embodiments of the first aspect of the present application, the timing module further includes a first diode, a second diode, a fourth resistor, a fifth resistor, and a sixth resistor, the first diode and the positive terminal of the second diode are used for being connected with an external power source, the negative terminal of the first diode is connected with one end of the fourth resistor, the other end of the fourth resistor is connected with the power supply port, the negative terminal of the second diode passes through the fifth resistor and is connected with the serial clock input terminal, and the negative terminal of the second diode is further connected with the serial data terminal through the sixth resistor.
According to some embodiments of the first aspect of the present application, the clock timing chip is model PCF 8563T.
According to some embodiments of the first aspect of the present application, the charge and discharge capacitor has a capacity of 0.22F.
According to some embodiments of the first aspect of the present application, the master control module is a single chip.
In a second aspect, the present application further provides a circuit board, including the circuit board as described in any one of the embodiments of the first aspect.
According to the circuit board of the embodiment of the second aspect of the application, at least the following beneficial effects are achieved: before the air purifier is used, the timing module presets the timing time of the timing module through the main control module, timing signals are sent to the timing module, the timing module receives the timing signals sent by the main control module and responds to the timing signals to output control signals to the main control module, and the main control module controls the working time of the air purifier according to the control signals. When the air purifier works, the timing module is powered by an external power supply, so that the timing module can finish timing work to control the air purifier to shut down when reaching the corresponding time, and meanwhile, the external power supply also charges a charge-discharge capacitor; when air purifier closed, charge-discharge electric capacity then supplies power for timing module through the mode of discharging to guarantee that timing module can also accomplish timing work under the power off state, restart when reaching the time that corresponds and carry out work with control air purifier, air purifier's on-off time can be controlled in this application, and the circuit is simple, and the cost is lower when preparation and production.
In a third aspect, the present application further provides an air purifier including the circuit board according to the embodiment of the second aspect.
According to the air purifier of the embodiment of the third aspect of the application, at least the following beneficial effects are achieved: before the air purifier is used, the timing module presets the timing time of the timing module through the main control module, timing signals are sent to the timing module, the timing module receives the timing signals sent by the main control module and responds to the timing signals to output control signals to the main control module, and the main control module controls the working time of the air purifier according to the control signals. When the air purifier works, the timing module is powered by an external power supply, so that the timing module can finish timing work to control the air purifier to shut down when reaching the corresponding time, and meanwhile, the external power supply also charges a charge-discharge capacitor; when air purifier closed, charge-discharge electric capacity then supplies power for timing module through the mode of discharging to guarantee that timing module can also accomplish timing work under the power off state, restart when reaching the time that corresponds and carry out work with control air purifier, air purifier's on-off time can be controlled in this application, and the circuit is simple, and the cost is lower when preparation and production.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
Additional aspects and advantages of the present application 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 block schematic diagram of a timed switch control circuit according to some embodiments of the present application;
FIG. 2 is a circuit schematic of a timing switch control circuit according to some embodiments of the present application;
fig. 3 is a circuit schematic diagram of a master control module according to some embodiments of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar 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 application and are not to be construed as limiting the present application.
In the description of the present application, it is to be understood that the positional descriptions, such as the directions of up, down, front, rear, left, right, etc., referred to herein are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present application.
In the description of the present application, if there are first and second described only for the purpose of distinguishing technical features, it is not understood that relative importance is indicated or implied or that the number of indicated technical features or the precedence of the indicated technical features is implicitly indicated or implied.
In the description of the present application, unless otherwise expressly limited, terms such as set, mounted, connected and the like should be construed broadly, and those skilled in the art can reasonably determine the specific meaning of the terms in the present application by combining the detailed contents of the technical solutions.
Referring to fig. 1, in a first aspect, the present application provides a time switch control circuit for use in an air purifier, the circuit comprising: the main control module is used for sending a timing signal according to preset timing time; the timing module is connected with the main control module and provided with a power supply port, and the power supply port is used for being connected with an external power supply to supply power to the timing module; the timing module is used for receiving a timing signal sent by the main control module and responding to and outputting a control signal to the main control module, and the main control module is used for controlling the working time of the air purifier according to the control signal; and the charging and discharging module comprises a charging and discharging capacitor DC, the positive end of the charging and discharging capacitor DC is connected with the power supply port, the negative end of the charging and discharging capacitor DC is grounded, and the charging and discharging capacitor DC can supply power to the timing module. Before the air purifier is used, the timing module presets the timing time of the timing module through the main control module, timing signals are sent to the timing module, the timing module receives the timing signals sent by the main control module and responds to the timing signals to output control signals to the main control module, and the main control module controls the working time of the air purifier according to the control signals. When the air purifier works, the timing module is powered by an external power supply, so that the timing module can finish timing work to control the air purifier to shut down when reaching the corresponding time, and meanwhile, the external power supply also charges a charge-discharge capacitor DC; when air purifier closed, charge-discharge electric capacity DC then supplies power for timing module through the mode of discharging to guarantee that timing module can also accomplish timing work under the power off state, with control air purifier to restart when the time that corresponds and carry out work, air purifier's switching time can be controlled in this application, and the circuit is simple, and the cost is lower when preparation and production.
Referring to fig. 2, it can be understood that the timing module includes a clock timing chip and an oscillator circuit, an oscillator input terminal and an oscillator output terminal of the clock timing chip are respectively connected to the oscillator circuit, an interrupt output terminal, a ground terminal and a clock output terminal of the clock timing chip are all grounded, a serial clock input terminal and a serial data terminal of the clock timing chip are connected to the master control module, and a positive power source terminal of the clock timing chip is connected to the power supply port. The oscillator circuit provides a clock signal for the clock timing chip, and the serial clock input end and the serial data end of the clock timing chip are matched with the main control module to carry out signal transmission, such as transmission of a preset timing time signal, an air purifier opening signal and an air purifier closing signal. When the air purifier works, the timing module is powered by the external power supply, so that the timing module can complete timing work to control the air purifier to shut down when reaching the corresponding time, and meanwhile, the external power supply also charges the charging and discharging capacitor DC; when the air purifier is closed, the charging and discharging capacitor DC supplies power for the timing module in a discharging mode so as to ensure that the timing module can also complete timing work in a shutdown state and control the air purifier to restart for work when reaching corresponding time.
It should be noted that, referring to fig. 3, fig. 3 is a schematic circuit diagram of a main control module in the timing switch control circuit of the present application, wherein a serial clock input end of a clock timing chip is connected to a 40 th pin of the main control module, a 41 th pin of a serial data end of the clock timing chip is connected, and the 40 th pin and the 41 th pin are both bidirectional IO ports.
With continued reference to fig. 2, it can be understood that the oscillator circuit includes a first capacitor C1, a second capacitor C2, a crystal oscillator X1, and a first resistor R1, one end of the first capacitor C1 is grounded, the other end is connected to the oscillator input terminal, one end of the crystal oscillator X1, and one end of the first resistor R1, one end of the second capacitor C2 is grounded, and the other end is connected to the oscillator output terminal, the other end of the crystal oscillator X1, and the other end of the first resistor R1. The capacitance of the first capacitor C1 and the second capacitor C2 is 7pF, the standard frequency of the crystal oscillator X1 is 32.768kHz, and the resistance value of the first resistor R1 is 3.3M omega.
With continued reference to fig. 2, it can be understood that the timing module further includes a third capacitor C3, a fourth capacitor C4, a second resistor R2, and a third resistor R3, one end of the third capacitor C3 is connected to the serial clock input terminal, one end of the fourth capacitor C4 is connected to the serial data terminal, the other ends of the third capacitor C3 and the fourth capacitor C4 are both grounded, the serial clock input terminal is connected to the master control module through the second resistor R2, and the serial data terminal is connected to the master control module through the third resistor R3. Through the connection relation of the third capacitor C3, the fourth capacitor C4, the second resistor R2 and the third resistor R3, the third capacitor C3 and the second resistor R2 are in parallel connection, and the fourth capacitor C4 and the third resistor R3 are in parallel connection, so that the signal filtering effect can be achieved, and the influence of interference signals on the normal operation of the timing switch control circuit is avoided. The resistance values of the second resistor R2 and the third resistor R3 are both 510 omega.
With continued reference to fig. 2, the timing module further includes a first diode D1, a second diode D2, a fourth resistor R4, a fifth resistor R5, and a sixth resistor R6, positive terminals of the first diode D1 and the second diode D2 are configured to be connected to an external power source, a negative terminal of the first diode D1 is connected to one terminal of the fourth resistor R4, the other terminal of the fourth resistor R4 is connected to the power supply port, a negative terminal of the second diode D2 is connected to the serial clock input terminal through the fifth resistor R5, and a negative terminal of the second diode D2 is further connected to the serial data terminal through the sixth resistor R6. The resistance of the fourth resistor R4 is 100 Ω, and the resistances of the fifth resistor R5 and the sixth resistor R6 are both 10k Ω.
It can be understood that the clock timing chip is model PCF8563T, wherein the clock timing chip model PCF8563T is a low power consumption CMOS real time clock/calendar chip that provides a programmable clock output, an interrupt output and a power down detector, all data and addresses are serially transferred over the I2C bus interface, the maximum bus speed is 400kbits/s, and the embedded address register automatically generates an increment after each data read/write.
It can be understood that the capacity of the charge and discharge capacitor DC is 0.22F, and when the air purifier operates, the charge and discharge capacitor DC is in a charged state; when the air purifier is closed, the charging and discharging capacitor DC is in a discharging state and supplies power for the clock timing chip.
It can be understood that the main control module is a single chip microcomputer chip, the single chip microcomputer has the advantages of being small in size, low in cost, flexible to use and easy to produce, and secondly, an I/O pin of the single chip microcomputer has the advantages of being multiple in function, strong in external expansion capability, strong in anti-interference capability and the like when in use.
In a second aspect, the present application further provides a circuit board, including the circuit board according to any one of the embodiments of the first aspect, before the air purifier is used, the timing module presets the timing time of the timing module, and sends a timing signal to the timing module, the timing module receives the timing signal sent by the main control module and responds to output a control signal to the main control module, and the main control module controls the working time of the air purifier according to the control signal. When the air purifier works, the timing module is powered by an external power supply, so that the timing module can finish timing work to control the air purifier to shut down when reaching the corresponding time, and meanwhile, the external power supply also charges a charge-discharge capacitor; when air purifier closed, charge-discharge electric capacity then supplies power for timing module through the mode of discharging to guarantee that timing module can also accomplish timing work under the power off state, restart when reaching the time that corresponds and carry out work with control air purifier, air purifier's on-off time can be controlled in this application, and the circuit is simple, and the cost is lower when preparation and production.
In a third aspect, the application also provides an air purifier, which comprises the circuit board of the embodiment of the second aspect. Before the air purifier is used, the timing module presets the timing time of the timing module through the main control module, timing signals are sent to the timing module, the timing module receives the timing signals sent by the main control module and responds to the timing signals to output control signals to the main control module, and the main control module controls the working time of the air purifier according to the control signals. When the air purifier works, the timing module is powered by an external power supply, so that the timing module can finish timing work to control the air purifier to shut down when reaching the corresponding time, and meanwhile, the external power supply also charges a charge-discharge capacitor; when air purifier closed, charge-discharge electric capacity then supplies power for timing module through the mode of discharging to guarantee that timing module can also accomplish timing work under the power off state, restart when reaching the time that corresponds and carry out work with control air purifier, air purifier's on-off time can be controlled in this application, and the circuit is simple, and the cost is lower when preparation and production.
The embodiments of the present application have been described in detail with reference to the drawings, but the present application is not limited to the embodiments, and various changes can be made without departing from the spirit of the present application within the knowledge of those skilled in the art.
Claims (10)
1. The utility model provides a time switch control circuit, is applied to air purifier, its characterized in that includes:
the main control module is used for sending a timing signal according to preset timing time;
the timing module is connected with the main control module and provided with a power supply port which is used for being connected with an external power supply to supply power to the timing module; the timing module is used for receiving a timing signal sent by the main control module and responding to and outputting a control signal to the main control module, and the main control module is used for controlling the working time of the air purifier according to the control signal;
the timing module comprises a timing module, a charging and discharging module and a control module, wherein the charging and discharging module comprises a charging and discharging capacitor, the positive end of the charging and discharging capacitor is connected with the power supply port, the negative end of the charging and discharging capacitor is grounded, and the charging and discharging capacitor can supply power to the timing module.
2. The timer switch control circuit according to claim 1, wherein the timing module comprises a clock timing chip and an oscillator circuit, an oscillator input terminal and an oscillator output terminal of the clock timing chip are respectively connected to the oscillator circuit, an interrupt output terminal, a ground terminal and a clock output terminal of the clock timing chip are all grounded, a serial clock input terminal and a serial data terminal of the clock timing chip are connected to the main control module, and a positive power source terminal of the clock timing chip is connected to the power supply port.
3. The timed switch control circuit according to claim 2 wherein said oscillator circuit comprises a first capacitor, a second capacitor, a crystal oscillator and a first resistor; one end of the first capacitor is grounded, and the other end of the first capacitor is respectively connected with the input end of the oscillator, one end of the crystal oscillator and one end of the first resistor; one end of the second capacitor is grounded, and the other end of the second capacitor is connected with the output end of the oscillator, the other end of the crystal oscillator and the other end of the first resistor respectively.
4. The timing switch control circuit according to claim 2, wherein the timing module further comprises a third capacitor, a fourth capacitor, a second resistor and a third resistor, one end of the third capacitor is connected to the serial clock input terminal, one end of the fourth capacitor is connected to the serial data terminal, the other ends of the third capacitor and the fourth capacitor are both grounded, the serial clock input terminal is further connected to the main control module through the second resistor, and the serial data terminal is connected to the main control module through the third resistor.
5. The time switch control circuit according to claim 4, wherein the timing module further comprises a first diode, a second diode, a fourth resistor, a fifth resistor and a sixth resistor, the positive terminals of the first diode and the second diode are used for connecting with an external power supply, the negative terminal of the first diode is connected with one terminal of the fourth resistor, the other terminal of the fourth resistor is connected with the power supply port, the negative terminal of the second diode is connected with the serial clock input terminal through the fifth resistor, and the negative terminal of the second diode is further connected with the serial data terminal through the sixth resistor.
6. The timed switch control circuit according to claim 2, characterized in that said clock timing chip has the model PCF 8563T.
7. The timer switch control circuit of claim 1, wherein the capacitance of the charge and discharge capacitor is 0.22F.
8. The timed switch control circuit according to claim 1, wherein said master control module is a single chip.
9. A circuit board comprising the timer switch control circuit according to any one of claims 1 to 8.
10. An air cleaner comprising the wiring board of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122052611.9U CN215642317U (en) | 2021-08-27 | 2021-08-27 | Timing switch control circuit, circuit board and air purifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122052611.9U CN215642317U (en) | 2021-08-27 | 2021-08-27 | Timing switch control circuit, circuit board and air purifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215642317U true CN215642317U (en) | 2022-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122052611.9U Active CN215642317U (en) | 2021-08-27 | 2021-08-27 | Timing switch control circuit, circuit board and air purifier |
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| Country | Link |
|---|---|
| CN (1) | CN215642317U (en) |
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2021
- 2021-08-27 CN CN202122052611.9U patent/CN215642317U/en active Active
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