CN215729348U - Air fryer control circuit with OTA upgrading function - Google Patents
Air fryer control circuit with OTA upgrading function Download PDFInfo
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- CN215729348U CN215729348U CN202121508932.9U CN202121508932U CN215729348U CN 215729348 U CN215729348 U CN 215729348U CN 202121508932 U CN202121508932 U CN 202121508932U CN 215729348 U CN215729348 U CN 215729348U
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- 230000003993 interaction Effects 0.000 claims abstract description 16
- 239000003990 capacitor Substances 0.000 claims description 9
- 230000006641 stabilisation Effects 0.000 claims description 6
- 238000011105 stabilization Methods 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract 1
- 230000000087 stabilizing effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The utility model discloses an air fryer control circuit with an OTA (over-the-air technology) upgrading function, which comprises a micro control unit MCU (micro control unit) for controlling the air fryer control circuit, a WIFI (wireless fidelity) communication module for carrying out data interaction with a cloud server, and a level conversion circuit for carrying out data interaction between the micro control unit MCU and the WIFI communication module. According to the utility model, the master control MCU with the BOOT area and supporting IAP programming is selected, the master control MCUU performs data interaction with the WIFI module through the serial port, the WIFI module performs data interaction with the cloud server through the WIFI signal, the cloud server performs data interaction with the mobile phone terminal equipment of a user through the network, and finally data interaction between the mobile phone terminal of the user and the circuit board is realized, and the user can monitor and OTA upgrade the firmware of the circuit board through the mobile phone.
Description
Technical Field
The utility model relates to the field of control circuits, in particular to an air fryer control circuit with an OTA (over the air) upgrading function.
Background
The MCU of the existing control circuit for controlling the work of the air fryer does not support the OTA upgrading function, so that a manufacturer cannot send an upgrading program to a circuit board through a server end to realize the remote upgrading function.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an air fryer control circuit with an OTA upgrading function, which is used for solving the problems in the prior art.
The technical purpose of the utility model is realized by the following technical scheme:
the utility model provides an air fryer control circuit with OTA upgrading function, includes the little the control unit MCU who is used for controlling air fryer control circuit, is used for carrying out data interaction's WIFI communication module with cloud ware and is used for the level conversion circuit of data interaction between little the control unit MCU and the WIFI communication module.
Furthermore, a BP _ WIFI serial port used for being connected with the WIFI communication module and an MCU _ RX serial port and an MCU _ TX serial port used for being connected with the level conversion circuit are arranged on the micro control unit MCU.
Further, the WIFI communication module includes a three-terminal regulator chip U1, a first terminal of the three-terminal regulator chip U1 is a GND ground terminal, a second terminal of the three-terminal regulator chip U1 is a regulated voltage output terminal Vout, and a third terminal of the three-terminal regulator chip U1 is a regulated voltage input terminal Vin; the voltage input end Vin before voltage stabilization and the GND grounding end form a voltage input loop, and the voltage output end Vout after voltage stabilization and the GND grounding end form a voltage output loop; a capacitor C2 is arranged in the voltage input loop, and a chip capacitor EC1, a capacitor C1 and a resistor R1 are connected in parallel in the voltage output loop;
WIFI communication module still includes control chip U2, resistance R8 and WIFI _ RX serial ports are passed through to control chip U2's first end, be equipped with electric capacity C4 between resistance R8 and WIFI _ RX serial ports, control chip U2's second end is through resistance R9 and WIFI _ TX serial ports, control chip U2's third end ground connection, control chip U2's fourth end is connected with triode Q2's collecting electrode, triode Q2's projecting pole is connected with resistance R5, triode Q2's base is passed through resistance R10 and BP _ WIFI serial ports, be equipped with resistance R6 between resistance R10 and BP _ WIFI serial ports.
Further, the level conversion circuit comprises a first module and a second module;
the first module comprises a resistor R7, one end of a resistor R7 is connected with an MCU _ RX serial port, the other end of the resistor R7 is connected with a collector of a triode Q1, a resistor R4 is arranged between the resistor R7 and a triode Q1, a base of the triode Q1 is connected with a resistor R11, an emitter of a triode Q1 is connected with a wifi _ TX serial port, and a resistor R3 is arranged between the triode Q1 and the wifi _ TX serial port;
the second module includes resistance R14, resistance R14's one end and MCU _ TX serial ports, resistance R14's the other end is connected with triode Q3's projecting pole, be equipped with resistance R13 between resistance R14 and triode Q3, triode Q3's base is connected with resistance R11, triode Q3's collecting electrode and wifi _ RX serial ports are connected, be equipped with resistance R12 between triode Q3 and wifi _ RX serial ports.
In conclusion, the utility model has the following beneficial effects:
the upgrading program sent by a manufacturer is received through the WIIF module, then the data signal is transmitted to the MCU through the level conversion circuit, and the MCU performs automatic upgrading according to the received data information.
Drawings
Fig. 1 is a schematic circuit diagram of the MCU master according to the present invention.
Fig. 2 is a schematic diagram of a level shift circuit according to the present invention.
Fig. 3 is a schematic view of a WIFI communication module according to the present invention.
Detailed Description
In order to make the technical means, the original characteristics, the achieved purposes and the effects of the utility model easy to understand, the utility model is further described with reference to the figures and the specific embodiments.
As shown in fig. 1, 2 and 3, the air fryer control circuit with the OTA upgrading function provided by the utility model comprises a micro control unit MCU for controlling the air fryer control circuit, a WIFI communication module for performing data interaction with a cloud server, and a level conversion circuit for data interaction between the micro control unit MCU and the WIFI communication module.
And the MCU is provided with a BP _ WIFI serial port used for being connected with the WIFI communication module, and an MCU _ RX serial port and an MCU _ TX serial port used for being connected with the level conversion circuit.
The WIFI communication module comprises a three-terminal voltage stabilizing chip U1, wherein the first terminal of the three-terminal voltage stabilizing chip U1 is a GND ground terminal, the second terminal of the three-terminal voltage stabilizing chip U1 is a stabilized voltage output terminal Vout, and the third terminal of the three-terminal voltage stabilizing chip U1 is a stabilized voltage input terminal Vin; the voltage input end Vin before voltage stabilization and the GND grounding end form a voltage input loop, and the voltage output end Vout after voltage stabilization and the GND grounding end form a voltage output loop; a capacitor C2 is arranged in the voltage input loop, and a chip capacitor EC1, a capacitor C1 and a resistor R1 are connected in parallel in the voltage output loop;
WIFI communication module still includes control chip U2, resistance R8 and WIFI _ RX serial ports are passed through to control chip U2's first end, be equipped with electric capacity C4 between resistance R8 and WIFI _ RX serial ports, control chip U2's second end is through resistance R9 and WIFI _ TX serial ports, control chip U2's third end ground connection, control chip U2's fourth end is connected with triode Q2's collecting electrode, triode Q2's projecting pole is connected with resistance R5, triode Q2's base is passed through resistance R10 and BP _ WIFI serial ports, be equipped with resistance R6 between resistance R10 and BP _ WIFI serial ports.
The level conversion circuit comprises a first module and a second module;
the first module comprises a resistor R7, one end of a resistor R7 is connected with an MCU _ RX serial port, the other end of the resistor R7 is connected with a collector of a triode Q1, a resistor R4 is arranged between the resistor R7 and a triode Q1, a base of the triode Q1 is connected with a resistor R11, an emitter of a triode Q1 is connected with a wifi _ TX serial port, and a resistor R3 is arranged between the triode Q1 and the wifi _ TX serial port;
the second module includes resistance R14, resistance R14's one end and MCU _ TX serial ports, resistance R14's the other end is connected with triode Q3's projecting pole, be equipped with resistance R13 between resistance R14 and triode Q3, triode Q3's base is connected with resistance R11, triode Q3's collecting electrode and wifi _ RX serial ports are connected, be equipped with resistance R12 between triode Q3 and wifi _ RX serial ports.
According to the utility model, the master control MCU with the BOOT area and supporting IAP programming is selected, the MCU performs data interaction with the WIFI module through the serial port, the WIFI module performs data interaction with the cloud server through the WIFI signal, the cloud server performs data interaction with the mobile phone terminal equipment of the user through the network, finally, the data interaction between the mobile phone terminal of the user and the circuit board is realized, and the user can monitor and OTA upgrade the firmware of the circuit board through the mobile phone.
The master control MCU and the WIFI module which are provided with the BOOT area and support IAP programming both belong to the prior art, and therefore, detailed description is omitted.
As used herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, including not only those elements listed, but also other elements not expressly listed.
The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the utility model as defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (4)
1. The utility model provides an air fryer control circuit with OTA upgrading function which characterized in that, including the little the control unit MCU who is used for controlling air fryer control circuit, be used for carrying out data interaction's WIFI communication module with cloud ware and be used for the level shift circuit of data interaction between little the control unit MCU and the WIFI communication module.
2. The air fryer control circuit with OTA upgrade function of claim 1, wherein, last BP _ WIFI serial port that is used for being connected with WIFI communication module and MCU _ RX serial port and MCU _ TX serial port that are used for being connected with level shift circuit that are equipped with of micro control unit MCU.
3. The air fryer control circuit with OTA upgrade function of claim 1, wherein the WIFI communication module comprises a three-terminal regulator chip U1, the first terminal of the three-terminal regulator chip U1 is GND ground, the second terminal of the three-terminal regulator chip U1 is a regulated voltage output terminal Vout, and the third terminal of the three-terminal regulator chip U1 is a regulated voltage input terminal Vin; the voltage input end Vin before voltage stabilization and the GND grounding end form a voltage input loop, and the voltage output end Vout after voltage stabilization and the GND grounding end form a voltage output loop; a capacitor C2 is arranged in the voltage input loop, and a chip capacitor EC1, a capacitor C1 and a resistor R1 are connected in parallel in the voltage output loop;
WIFI communication module still includes control chip U2, resistance R8 and WIFI _ RX serial ports are passed through to control chip U2's first end, be equipped with electric capacity C4 between resistance R8 and WIFI _ RX serial ports, control chip U2's second end is through resistance R9 and WIFI _ TX serial ports, control chip U2's third end ground connection, control chip U2's fourth end is connected with triode Q2's collecting electrode, triode Q2's projecting pole is connected with resistance R5, triode Q2's base is passed through resistance R10 and BP _ WIFI serial ports, be equipped with resistance R6 between resistance R10 and BP _ WIFI serial ports.
4. The OTA upgrade capable air fryer control circuit of claim 1, wherein the level shifter circuit comprises a first module and a second module;
the first module comprises a resistor R7, one end of a resistor R7 is connected with an MCU _ RX serial port, the other end of the resistor R7 is connected with a collector of a triode Q1, a resistor R4 is arranged between the resistor R7 and a triode Q1, a base of the triode Q1 is connected with a resistor R11, an emitter of a triode Q1 is connected with a wifi _ TX serial port, and a resistor R3 is arranged between the triode Q1 and the wifi _ TX serial port;
the second module includes resistance R14, resistance R14's one end and MCU _ TX serial ports, resistance R14's the other end is connected with triode Q3's projecting pole, be equipped with resistance R13 between resistance R14 and triode Q3, triode Q3's base is connected with resistance R11, triode Q3's collecting electrode and wifi _ RX serial ports are connected, be equipped with resistance R12 between triode Q3 and wifi _ RX serial ports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121508932.9U CN215729348U (en) | 2021-07-05 | 2021-07-05 | Air fryer control circuit with OTA upgrading function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121508932.9U CN215729348U (en) | 2021-07-05 | 2021-07-05 | Air fryer control circuit with OTA upgrading function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215729348U true CN215729348U (en) | 2022-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121508932.9U Expired - Fee Related CN215729348U (en) | 2021-07-05 | 2021-07-05 | Air fryer control circuit with OTA upgrading function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215729348U (en) |
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2021
- 2021-07-05 CN CN202121508932.9U patent/CN215729348U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220201 |