An active NFC-based integrated cooker

Abstract

The utility model discloses an integrated cooker based on active NFC. The integrated cooker based on active NFC comprises: the main control board, display board and active NFC circuit module on the integrated cooker table panel, the main control board is connected with the display board, and the main control board is used for voltage conversion and power supply for the display board, the display board is connected with the active NFC circuit module, and the display board is used for voltage conversion and power supply for the active NFC circuit module, and the active NFC circuit module is also connected with the mobile phone communication, the active NFC circuit module comprises: the active NFC radio frequency chip and antenna unit that are connected with each other, the main control board is used for the configuration and control to the active NFC radio frequency chip, the active NFC radio frequency chip is used for driving antenna unit to emit or receive radio frequency signal in the transmitting mode or receiving mode, and the antenna unit carries out the two -way communication with the mobile phone through electromagnetic induction. The utility model can realize the two -way communication with the mobile phone, can provide OTA function, and keeps the lower cost.

Description

Technical Field

[0001] This utility model relates to the field of intelligent integrated stove technology, and in particular to an integrated stove based on active NFC. Background Technology

[0002] With people's pursuit of a healthy kitchen lifestyle, smart kitchen appliances are developing rapidly. Integrated cooktops, as a type of kitchen appliance that combines multiple functions such as range hoods, gas stoves, and steam ovens, have become the mainstream of modern kitchen decoration, and the intelligentization of integrated cooktops is the current mainstream direction of industry development.

[0003] Currently, integrated cooktops without Bluetooth / Wi-Fi functionality cannot communicate with users or deliver functions, limiting the user experience. While existing smart integrated cooktops do have Bluetooth / Wi-Fi capabilities, their higher cost impacts the overall cost of the integrated cooktop. Utility Model Content

[0004] This invention provides an integrated stove based on active NFC, which can achieve two-way communication with mobile phones and provide OTA function, while maintaining a low cost.

[0005] According to one aspect of the present invention, an integrated stove based on active NFC is provided. The integrated stove based on active NFC includes: a main control board, a display board and an active NFC circuit module placed on the stove panel of the integrated stove.

[0006] The main control board is connected to the display board, and the main control board is used for voltage conversion and to supply power to the display board;

[0007] The display panel is connected to the active NFC circuit module. The display panel is used for voltage conversion and to supply power to the active NFC circuit module. The active NFC circuit module is also connected to the mobile phone for communication.

[0008] The active NFC circuit module includes an active NFC radio frequency chip and an antenna unit connected to each other. The main control board is used to configure and control the active NFC radio frequency chip. The active NFC radio frequency chip is used to drive the antenna unit to transmit or receive radio frequency signals in transmit mode or receive mode. The antenna unit communicates bidirectionally with the mobile phone through electromagnetic induction.

[0009] Optionally, the active NFC radio frequency chip includes: a power management unit, an active radio frequency transmitter, a protocol engine, and a data buffer interface;

[0010] The power management unit is connected to the main control board, and the power management unit is used to convert the power supply voltage provided by the main control board into a stable radio frequency and logic voltage;

[0011] The active radio frequency transmitter is used to actively generate a radio frequency field, and the protocol engine is used to process the communication protocol and automatically complete the modulation and demodulation and CRC check of the protocol.

[0012] The data buffer interface is connected to the main control board, and the data buffer interface is used to interact with the main control board to transmit commands.

[0013] Optionally, the power management unit, the active radio frequency transmitter, the protocol engine, and the data buffer interface are integrated into the same chip.

[0014] Optionally, the active NFC radio frequency chip further includes: an oscillator module, a power amplifier module, a clock module, and a low-power management module;

[0015] The oscillator module and the power amplifier module are used to actively generate radio frequency carriers and drive the antenna unit to transmit signals through a matching network.

[0016] The clock module is used to provide timing and synchronization signals, and the low-power management module is used to reduce static and dynamic power consumption.

[0017] Optionally, the active NFC radio frequency chip further includes: a low-noise amplifier and a demodulator;

[0018] The low-noise amplifier and the demodulator are used to extract digital signals after the antenna unit couples the mobile phone signal, and store the digital signals in the internal buffer of the active NFC radio frequency chip after verification by the protocol engine.

[0019] Optionally, the active NFC circuit module further includes: a first capacitor, a second capacitor, a first resistor, and a second resistor;

[0020] The first terminal of the first capacitor is connected to the second terminal of the active NFC RF chip and then grounded. The second terminal of the first capacitor is connected to the first terminal of the active NFC RF chip. The first terminal of the second capacitor is connected to the fourth terminal of the active NFC RF chip. The second terminal of the second capacitor is connected to the fifth terminal of the active NFC RF chip. The first terminal of the first resistor is connected to the seventh terminal of the active NFC RF chip. The first terminal of the second resistor is connected to the sixth terminal of the active NFC RF chip. The second terminal of the first resistor is connected to the second terminal of the second resistor and then connected to the third terminal of the active NFC RF chip.

[0021] Optionally, the antenna element is an onboard antenna, and the antenna element is ring-shaped.

[0022] Optionally, the length of the antenna element is 30mm-50mm, and the width of the antenna element is 20mm-40mm.

[0023] Optionally, the communication method between the active NFC circuit module and the display panel includes at least one of IIC, SPI and UART;

[0024] The active NFC circuit module communicates with each other via RFID.

[0025] Optionally, the low-power operating mode of the active NFC radio frequency chip includes at least one of the following: idle mode, sleep mode, and deep sleep mode.

[0026] The technical solution of this utility model embodiment uses a main control board to configure and control an active NFC radio frequency chip. The active NFC radio frequency chip drives the antenna unit to transmit or receive radio frequency signals in transmit or receive modes. The antenna unit communicates bidirectionally with the mobile phone through electromagnetic induction, enabling OTA upgrades, intelligent querying and resolution of product fault codes, and allowing users to issue functions via an APP. This achieves the same functions as the integrated stove with Bluetooth / WIFI, improving the product's intelligence and user experience while reducing costs. It solves the problems of existing integrated stoves being unable to communicate with users and issue functions, as well as high costs. It has the beneficial effect of achieving bidirectional communication with mobile phones, providing OTA functionality, and maintaining a low cost.

[0027] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of an integrated stove based on active NFC, according to an embodiment of the present utility model.

[0030] Figure 2 This is a schematic diagram of the working principle of an active NFC circuit module 30 with three core interactions according to an embodiment of the present invention;

[0031] Figure 3 This is a circuit schematic diagram of an active NFC circuit module provided according to an embodiment of the present utility model;

[0032] Figure 4 This is a flowchart of an active NFC radio frequency chip initialization configuration according to an embodiment of the present invention;

[0033] Figure 5 This is a flowchart of a master control terminal receiving instructions according to an embodiment of the present utility model;

[0034] Figure 6 This is a flowchart of a master control terminal sending instructions according to an embodiment of the present utility model;

[0035] Figure 7 This is a flowchart illustrating the dynamic working mode switching of an active NFC radio frequency chip according to an embodiment of the present invention. Detailed Implementation

[0036] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0037] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0038] Figure 1 This is a schematic diagram of an integrated stove based on active NFC according to an embodiment of the present invention, with reference to... Figure 1 The present invention provides an integrated stove based on active NFC, which includes a main control board 10, a display board 20 and an active NFC circuit module 30 placed on the stove panel.

[0039] The main control board 10 is connected to the display board 20. The main control board 10 is used for voltage conversion and to supply power to the display board 20.

[0040] The display panel 20 is connected to the active NFC circuit module 30. The display panel 20 is used for voltage conversion and to power the active NFC circuit module 30. The active NFC circuit module 30 is also connected to the mobile phone for communication.

[0041] The active NFC circuit module 30 includes an active NFC radio frequency chip and an antenna unit that are interconnected. The main control board is used to configure and control the active NFC radio frequency chip. The active NFC radio frequency chip is used to drive the antenna unit to transmit or receive radio frequency signals in transmit or receive modes. The antenna unit communicates bidirectionally with the mobile phone through electromagnetic induction.

[0042] Specifically, the main control board 10 outputs 12V after passing the 220V voltage through a DC-DC step-down circuit to power the display board 20. The display board 20 circuit, through a DC-DC step-down circuit, can convert the 12V voltage to 5V or 3.3V for powering sensors or communication modules. The active NFC circuit module 30, serving as a communication module, directly uses the 5V output port of the display board 20 as its power input.

[0043] The active NFC RF chip uses the PL51NF02x chip from Juyuan Microelectronics. This chip has built-in storage and can be read and written via a 13.56MHz RFID reader or an NFC-enabled mobile phone. The RF protocol is compatible with ISO / IEC 14443 Type A and NFC Forum Type 4 Tag. During operation, the active NFC RF chip continuously transmits an RF carrier. When a mobile phone approaches: In receiving mode, the active NFC RF chip modulates and demodulates the mobile phone signal through a load modulator; the data is parsed according to the protocol and then notifies the main control board 10 via an interrupt. In transmitting mode, the main control board 10 writes the response data into the active NFC RF chip's buffer, and the active NFC RF chip actively modulates the carrier and transmits it to the mobile phone. The main control board 10 can read and write the active NFC RF chip via standard protocols, enabling bidirectional communication with the user terminal. The antenna unit is an onboard antenna.

[0044] Figure 2 This is a schematic diagram of the working principle of an active NFC circuit module 30 with three core interactions according to an embodiment of the present invention, with reference to... Figure 2 The three-core interaction process of the active NFC circuit module 30 is as follows:

[0045] Interaction between the main control board 10 and the active NFC RF chip: The main control board 10 configures and controls the RF chip via IIC, UART, or SPI interfaces. Power supply: The main control board 10's 3.3V / 5V power supply directly powers the active NFC RF chip, with voltage regulation by the chip's internal power management unit. Data interaction: The main control board 10 sends or reads data by accessing the chip's internal buffer via the bus.

[0046] Interaction between the active NFC RF chip and the antenna unit: Transmit mode: The active NFC RF chip actively generates an RF carrier using its built-in oscillator and power amplifier, and drives the antenna unit to transmit signals through a matching network. Receive mode: After the antenna unit couples with the mobile phone signal, the active NFC RF chip activates its internal low-noise amplifier and demodulator to extract digital data. After verification by the protocol engine, the data is stored in the buffer within the active NFC RF chip.

[0047] Antenna unit interaction with external devices: The antenna unit interacts with the mobile phone through electromagnetic induction, and its resonant frequency is strictly matched to 13.56MHz to ensure signal transmission efficiency.

[0048] Active NFC RF chips have a built-in user-programmable memory area, allowing dynamic writing of firmware packages or configuration parameters. Therefore, they can be used in OTA applications to remotely update and upgrade product functions. Because the active NFC circuit module has bidirectional communication capabilities, on the one hand, when a product malfunctions, the main controller sends the corresponding fault code to the active NFC. When the user's mobile phone is near the NFC, they can view the cause of the fault and obtain solutions through an app, achieving intelligent fault diagnosis and handling (sent from the main controller). On the other hand, when the user sets the function parameters through the app, the active NFC circuit module receives the RF signal emitted by the mobile phone at close range, converts it into a digital signal, and stores it in the built-in memory. The main control board reads the data to execute the corresponding function (received from the main control). Based on the unique identification code of the active NFC RF chip and the protected memory area within the chip, the data is permanently locked after being written. Therefore, active NFC can be used for anti-counterfeiting functions. Based on the hardware testability and flexible configuration capabilities of the active NFC RF chip, it can be used as a production testing tool.

[0049] In summary, integrated cooktops with active NFC enable OTA (Over-The-Air) upgrades for non-smart models. The mobile phone communicates with the active NFC radio frequency chip to remotely update or upgrade the cooktop. By placing the phone close to the active NFC radio frequency chip, real-time fault codes can be queried and resolved via the app. The app also allows for configuration and function distribution to the integrated cooktop.

[0050] The technical solution of this utility model embodiment uses a main control board to configure and control an active NFC radio frequency chip. The active NFC radio frequency chip drives the antenna unit to transmit or receive radio frequency signals in transmit or receive modes. The antenna unit communicates bidirectionally with the mobile phone through electromagnetic induction, enabling OTA upgrades, intelligent querying and resolution of product fault codes, and allowing users to issue functions via an APP. This achieves the same functions as the integrated stove with Bluetooth / WIFI, improving the product's intelligence and user experience while reducing costs. It solves the problems of existing integrated stoves being unable to communicate with users and issue functions, as well as high costs. It has the beneficial effect of achieving bidirectional communication with mobile phones, providing OTA functionality, and maintaining a low cost.

[0051] Optionally, the active NFC radio frequency chip includes: a power management unit, an active radio frequency transmitter, a protocol engine, and a data buffer interface;

[0052] The power management unit is connected to the main control board and is used to convert the power supply voltage provided by the main control board into stable radio frequency and logic voltages.

[0053] The active RF transmitter is used to actively generate the RF field, and the protocol engine is used to process the communication protocol and automatically complete the modulation and demodulation of the protocol and CRC check.

[0054] The data buffer interface is connected to the main control board and is used to exchange and transmit commands with the main control board.

[0055] Specifically, the active NFC RF chip is directly powered by the main control board (e.g., 3.3V / 5V), without relying on an external card reader for power. Its core lies in a highly integrated RF chip, which internally includes: a power management unit: converting the main control board's power supply into stable RF and logic voltages; an active RF transmitter: with a built-in 13.56MHz oscillator and PA, actively generating the RF field; a protocol engine: hardware-level processing of protocols such as ISO14443 / NDEF, automatically completing modulation / demodulation and CRC verification; and a data buffer interface: interacting with the main control board to transmit commands and data via IIC, UART, or SPI.

[0056] Optionally, the power management unit, active RF transmitter, protocol engine, and data buffer interface are integrated into the same chip.

[0057] Specifically, the power management unit, active RF transmitter, protocol engine, and data buffer interface are integrated into a single active NFC RF chip. Integrating multiple components within a single chip saves on printed circuit board costs and space. It also improves chip reliability. Because all components are integrated into a single chip, the connections and movement between internal components are reduced, thus minimizing wear and tear and reducing the likelihood of external interference and damage.

[0058] Optionally, the active NFC radio frequency chip also includes: an oscillator module, a power amplifier module, a clock module, and a low-power management module;

[0059] The oscillator module and power amplifier module are used to actively generate radio frequency carriers and drive the antenna unit to transmit signals through a matching network;

[0060] The clock module provides timing and synchronization signals, while the low-power management module reduces static and dynamic power consumption.

[0061] Specifically, the active NFC RF chip uses the PL51NF02x chip from Juyuan Microelectronics. This chip has built-in memory and can be read and written via a 13.56MHz RFID reader or an NFC-enabled mobile phone. The RF protocol is compatible with ISO / IEC 14443 Type A and NFC Forum Type 4 Tag. The chip also integrates an oscillator module, a power amplifier module, a clock module, and a low-power management module. Because the active NFC module is powered by the main control board, no external filtering circuit is required. Furthermore, due to the chip's high integration, there is no need for external crystal oscillators, power amplifier modules, clock modules, etc. The antenna unit only needs to be connected to the chip's RF pins, eliminating the need for external discrete component designs for amplifier and clock circuits.

[0062] Optionally, the active NFC radio frequency chip also includes: a low-noise amplifier and a demodulator;

[0063] The low-noise amplifier and demodulator are used to extract the digital signal after the antenna unit couples the mobile phone signal. After verification by the protocol engine, the digital signal is stored in the internal buffer of the active NFC radio frequency chip.

[0064] Specifically, the receiving mode of the active NFC RF chip is as follows: after the antenna unit couples the mobile phone signal, the active NFC RF chip starts the internal low-noise amplifier and demodulator to extract digital data, which is then stored in the chip's internal buffer after being verified by the protocol engine.

[0065] Figure 3 This is a circuit schematic diagram of an active NFC circuit module according to an embodiment of the present invention, with reference to... Figure 3Optionally, the active NFC circuit module further includes: a first capacitor C1, a second capacitor C2, a first resistor R1, and a second resistor R2;

[0066] The first terminal of the first capacitor C1 is connected to the second terminal 2 of the active NFC RF chip U1 and then grounded. The second terminal of the first capacitor C1 is connected to the first terminal 1 of the active NFC RF chip U1. The first terminal of the second capacitor C2 is connected to the fourth terminal 4 of the active NFC RF chip U1. The second terminal of the second capacitor C2 is connected to the fifth terminal 5 of the active NFC RF chip U1. The first terminal of the first resistor R1 is connected to the seventh terminal 7 of the active NFC RF chip U1. The first terminal of the second resistor R2 is connected to the sixth terminal 6 of the active NFC RF chip U1. The second terminal of the first resistor R1 is connected to the second terminal of the second resistor R2 and then connected to the third terminal 3 of the active NFC RF chip U1.

[0067] Specifically, the active NFC circuit module consists of an antenna unit, an active NFC radio frequency chip, and its peripheral circuitry. The peripheral circuitry comprises a first capacitor C1, a second capacitor C2, a first resistor R1, and a second resistor R2. The capacitors and resistors are mainly used for antenna matching, signal filtering, and impedance adjustment.

[0068] The first capacitor C1 and the second capacitor C2 filter out interference signals in the circuit, providing a low-impedance path for the AC signal, reducing the impact of noise on NFC communication, and ensuring the pure transmission of the 13.56MHz signal. The first resistor R1 and the second resistor R2 perform impedance matching: by adjusting the resistance values, impedance matching between the load and the signal source is achieved, optimizing energy transmission efficiency. Signal attenuation control limits the current magnitude to prevent electromagnetic interference from affecting the stability of NFC communication.

[0069] Optionally, the antenna element is an on-board antenna, and the shape of the antenna element is ring-shaped.

[0070] Optionally, the length of the antenna element is 30mm-50mm and the width of the antenna element is 20mm-40mm.

[0071] Specifically, the antenna unit adopts an onboard antenna design, placed under the integrated stove's cooktop panel, which is composed of sheet metal and glass. The antenna unit's specific parameters are: a loop antenna type, dimensions of 40mm × 30mm, and a disc shape. The antenna unit is used to transmit / receive 13.56MHz radio frequency signals, and its impedance must be matched according to the chip and installation environment requirements. The main control board can read and write the active NFC radio frequency chip via standard protocols, enabling bidirectional communication with the user terminal.

[0072] Optionally, the communication method between the active NFC circuit module and the display board includes at least one of IIC, SPI and UART;

[0073] Active NFC circuit modules communicate with each other via RFID.

[0074] Specifically, the active NFC circuit module is built into the side of the integrated stove's display panel, and the communication method is IIC, SPI, or UART. The active NFC module consists of an antenna, a chip, and its peripheral circuitry, occupying an area of ​​approximately 3cm × 2.5cm on the display panel. The antenna type is an onboard antenna.

[0075] Figure 4 This is a flowchart of the initialization configuration of an active NFC radio frequency chip according to an embodiment of the present invention, with reference to... Figure 4 After the main control board powers on, it supplies power to the active NFC RF chip via a 3.3V / 5V power line, initializes the IIC, UART, or SPI communication interface, and configures the chip's clock and GPIO modes. Upon successful configuration, the main control board sends an RF field start command, and the active NFC RF chip begins generating a 13.56MHz carrier wave. The antenna unit enters a ready state, waiting for an external device to approach. When an external device is detected, the chip receives the RF signal emitted by the external device, demodulates the signal, and then begins CRC verification. If the data passes the CRC verification, response data is generated and stored in the chip buffer, waiting for the main control board to read and execute the data. Upon successful reading, the RF chip restarts the RF field; upon failure, the chip performs a soft reset.

[0076] Figure 5 This is a flowchart of a master control terminal receiving instructions according to an embodiment of the present utility model, with reference to... Figure 5 When an NFC-enabled phone approaches the antenna unit (typically ≤10cm), the 13.56MHz radio frequency signal emitted by the phone is coupled to the antenna unit via electromagnetic induction, generating a weak AC voltage signal. The active NFC RF chip continuously monitors the energy at the antenna end, identifying changes in carrier amplitude through an envelope detection circuit. When the signal strength exceeds a threshold, the receiving process is triggered. The chip amplifies and demodulates the weak RF signal, then processes it through the protocol layer, identifying and verifying the demodulated signal. If the verification passes, the chip stores the data in a buffer, waiting for the master controller to read the data via IIC, UART, or SPI to execute the corresponding function. If the verification fails, the data packet is discarded, and the active NFC RF chip re-detects carrier energy changes.

[0077] Figure 6 This is a flowchart of a master control terminal sending instructions according to an embodiment of the present utility model, with reference to... Figure 6The main control board encapsulates the data according to the protocol format, generates response data, and writes the data to the transmission buffer via IIC, UART, or SPI to notify the active NFC RF chip that the data is ready. The active NFC RF chip then moves the data from the main control buffer to the modulator buffer. The chip's built-in oscillator generates a 13.56MHz carrier wave to modulate and transmit the data. The mobile phone's NFC chip detects changes in field strength, demodulates and verifies the data. If successful, the mobile app displays the corresponding content. If it fails, the active NFC RF chip restarts load modulation. If demodulation fails three times consecutively, the main control board reads the status register to determine whether to rewrite the data into the active NFC RF chip's buffer.

[0078] Optionally, the low-power operating modes of the active NFC radio frequency chip include at least one of the following: idle mode, sleep mode, and deep sleep mode.

[0079] Specifically, Figure 7 This is a flowchart illustrating the dynamic operating mode switching of an active NFC radio frequency chip according to an embodiment of the present invention, with reference to... Figure 7 The active NFC RF chip can operate in three low-power modes: idle mode, sleep mode, and deep sleep mode.

[0080] In idle mode, the RF module remains running, the CPU frequency is reduced, and it can quickly respond to external events (such as RF field activation, interrupt signals); in sleep mode, the RF module is turned off, the CPU is paused (but the register state is preserved), but the timer continues to run; in deep sleep mode, the RF module and CPU are completely turned off, only maintaining a minimum power supply, and can only be exited by hardware reset or power-on restart.

[0081] Control Relationship: After the integrated stove is plugged in, the active NFC RF chip is powered by the main control board. The main control board will initialize and configure the active NFC RF chip through the interface. After initialization and configuration, the active NFC RF chip is in idle mode, which is the normal state of the active NFC RF chip. To switch from idle mode to active communication mode, the phone needs to be close to the active NFC RF chip. To switch from idle mode to sleep mode, the chip will automatically enter sleep mode after waiting for a certain period of time in idle mode, or a sleep command can be set through the APP, and then the phone can be close to the active NFC RF chip. The active NFC RF chip will receive the sleep command and enter sleep mode. To switch from sleep mode to active communication mode, the chip can be woken up through the APP software or through an external interrupt. To activate deep sleep mode, a corresponding activation command needs to be sent in sleep mode or idle mode. To wake up the active NFC RF chip in deep sleep mode, the integrated stove can be powered on and off or the hardware can be reset and re-initialized. Although this mode has lower power consumption, the wake-up conditions are strict and it can be ignored.

[0082] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An integrated stove based on active NFC, characterized in that, include: The main control board, display board, and active NFC circuit module are placed on the cooktop panel of the integrated stove. The main control board is connected to the display board, and the main control board is used for voltage conversion and to supply power to the display board; The display panel is connected to the active NFC circuit module. The display panel is used for voltage conversion and to supply power to the active NFC circuit module. The active NFC circuit module is also connected to the mobile phone for communication. The active NFC circuit module includes an active NFC radio frequency chip and an antenna unit connected to each other. The main control board is used to configure and control the active NFC radio frequency chip. The active NFC radio frequency chip is used to drive the antenna unit to transmit or receive radio frequency signals in transmit mode or receive mode. The antenna unit communicates bidirectionally with the mobile phone through electromagnetic induction.

2. The integrated stove according to claim 1, characterized in that, The active NFC radio frequency chip includes: a power management unit, an active radio frequency transmitter, a protocol engine, and a data buffer interface; The power management unit is connected to the main control board, and the power management unit is used to convert the power supply voltage provided by the main control board into a stable radio frequency and logic voltage; The active radio frequency transmitter is used to actively generate a radio frequency field, and the protocol engine is used to process the communication protocol and automatically complete the modulation and demodulation and CRC check of the protocol. The data buffer interface is connected to the main control board, and the data buffer interface is used to interact with the main control board to transmit commands.

3. The integrated stove according to claim 2, characterized in that, The power management unit, the active radio frequency transmitter, the protocol engine, and the data buffer interface are integrated into the same chip.

4. The integrated stove according to claim 1, characterized in that, The active NFC radio frequency chip also includes: an oscillator module, a power amplifier module, a clock module, and a low-power management module; The oscillator module and the power amplifier module are used to actively generate radio frequency carriers and drive the antenna unit to transmit signals through a matching network. The clock module is used to provide timing and synchronization signals, and the low-power management module is used to reduce static and dynamic power consumption.

5. The integrated stove according to claim 2, characterized in that, The active NFC radio frequency chip also includes: a low-noise amplifier and a demodulator; The low-noise amplifier and the demodulator are used to extract digital signals after the antenna unit couples the mobile phone signal, and store the digital signals in the internal buffer of the active NFC radio frequency chip after verification by the protocol engine.

6. The integrated stove according to claim 1, characterized in that, The active NFC circuit module further includes: a first capacitor, a second capacitor, a first resistor, and a second resistor; The first terminal of the first capacitor is connected to the second terminal of the active NFC RF chip and then grounded. The second terminal of the first capacitor is connected to the first terminal of the active NFC RF chip. The first terminal of the second capacitor is connected to the fourth terminal of the active NFC RF chip. The second terminal of the second capacitor is connected to the fifth terminal of the active NFC RF chip. The first terminal of the first resistor is connected to the seventh terminal of the active NFC RF chip. The first terminal of the second resistor is connected to the sixth terminal of the active NFC RF chip. The second terminal of the first resistor is connected to the second terminal of the second resistor and then connected to the third terminal of the active NFC RF chip.

7. The integrated stove according to claim 1, characterized in that, The antenna element is an onboard antenna, and the antenna element is ring-shaped.

8. The integrated stove according to claim 7, characterized in that, The length of the antenna element is 30mm-50mm, and the width of the antenna element is 20mm-40mm.

9. The integrated stove according to claim 1, characterized in that, The communication method between the active NFC circuit module and the display panel includes at least one of IIC, SPI and UART; The active NFC circuit module communicates with each other via RFID.

10. The integrated stove according to claim 1, characterized in that, The low-power operating modes of the active NFC radio frequency chip include at least one of the following: idle mode, sleep mode, and deep hibernation mode.

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