WIFI control circuit for electric cooker

Abstract

The utility model discloses a WIFI control circuit for an electric cooker, which comprises a control module, a WIFI receiving module, a WIFI transmitting module and a power supply module, the control module comprises a single chip microcomputer U4, and the single chip microcomputer U4 is provided with an RXD port, a TXD port, a GND port and a VCC port; the RXD port is connected with the WIFI receiving module through a WIFI RX end, and the TXD port is connected with the WIFI transmitting module through a WIFI TX end; the GND port is grounded; the VCC port is connected with a collector electrode of the triode Q1, a base electrode of the triode Q1 is connected with one end of the resistor R13, the other end of the resistor R13 is provided with a circuit breaking point, the resistor R9 is arranged between the resistor R13 and the circuit breaking point, the resistor R8 is arranged between the base electrode of the triode Q1 and the resistor R13, and the resistor R8, the resistor R9 and an emitter electrode of the triode Q1 are used for being connected with a power supply module. According to the utility model, the triode is arranged in the WIFI control circuit, so that when the electric cooker is in a standby or working state, the purposes of cutting off the power supply of the WIFI module during standby and saving energy are achieved by switching the on-off of the triode.

Description

Technical Field

[0001] The utility model relates to the field of household appliance control circuits, in particular to a WIFI control circuit for an electric rice cooker. Background Art

[0002] The WiFi circuit in the rice cooker is a key part of the rice cooker's intelligence and remote control. By accessing the WiFi network, remote control and status monitoring can be achieved from a mobile phone APP or other smart devices, and the heating control of the PTC heating element can be realized to achieve the heating, insulation and other functions of the rice cooker.

[0003] For example, the patent document with patent number 201520803936.8 discloses an IoT smart rice cooker, including a rice cooker body and a water inlet device. The rice cooker body includes a circuit control system and an inner pot of the rice cooker. The water inlet device is connected to the inner pot of the rice cooker through a pipe, and the water inlet device is connected to the circuit control system through a circuit. The circuit control system includes a rectifier circuit, a control module, a communication module, a display and a light-emitting device. The rectifier circuit, communication module, display and light-emitting device are all connected to the control module. The circuit control system is connected to the control terminal through the communication module to obtain remote control information.

[0004] The above technical solution can control the water inlet time through the water inlet device, and by setting a communication module and communicating with the control terminal, it can finally realize the short-range or long-range control of the water inlet and cooking time of the rice cooker. However, the power supply in the above technical solution will always supply power to the WIFI module, resulting in increased power consumption during standby mode and energy waste.

[0005] Therefore, it is necessary to improve such a structure to overcome the above-mentioned defects. Utility Model Content

[0006] The utility model aims to provide a WIFI control circuit for an electric rice cooker to solve the problems existing in the prior art.

[0007] The above technical objectives of the utility model are achieved through the following technical solutions:

[0008] A WIFI control circuit for an electric rice cooker comprises a control module, a WIFI receiving module, a WIFI transmitting module and a power module, wherein the control module comprises a single-chip microcomputer U4, and the single-chip microcomputer U4 is provided with a RXD port, a TXD port, a GND port and a VCC port;

[0009] The RXD port is connected to one end of the protection resistor R6, the other end of the protection resistor R6 is provided with a WIFI_RX end, and is connected to the WIFI receiving module through the WIFI_RX end, and a parallel capacitor C3 is provided between the protection resistor R6 and the WIFI_RX end;

[0010] The TXD port is connected to one end of the protection resistor R7, and the other end of the protection resistor R7 is provided with a WIFI_TX end, and is connected to the WIFI transmitting module through the WIFI_TX end;

[0011] The GND port is grounded; the VCC port is connected to the collector of the transistor Q1, the base of the transistor Q1 is connected to one end of the resistor R13, the other end of the resistor R13 is provided with a circuit breaker point, a resistor R9 is provided between the resistor R13 and the circuit breaker point, a resistor R8 is provided between the base of the transistor Q1 and the resistor R13, and the resistor R8, the resistor R9 and the emitter of the transistor Q1 are used to connect the power module.

[0012] Furthermore, the WIFI receiving module includes a transistor Q4, the base of the transistor Q4 is connected to the resistor R10, the collector of the transistor Q4 is used to connect to the WIFI_RX end, a resistor R11 is provided between the collector of the transistor Q4 and the WIFI_RX end, the emitter of the transistor Q4 is connected to one end of the resistor R14, the other end of the resistor R14 is provided with the MCU_TX end, a resistor R12 is provided between the emitter of the transistor Q4 and the resistor R14, and the resistors R10, R11 and R12 are used to connect to the power module.

[0013] Furthermore, the WIFI transmitting module includes a transistor Q3, the base of the transistor Q3 is connected to the resistor R2, the emitter of the transistor Q3 is used to connect to the WIFI_TX end, a resistor R4 is provided between the collector of the transistor Q3 and the WIFI_TX end, the collector of the transistor Q4 is connected to one end of the resistor R5, the other end of the resistor R5 is provided with the MCU_RX end, a resistor R3 is provided between the collector of the transistor Q4 and the resistor R5, and the resistors R2, R3 and R4 are used to connect to the power module.

[0014] Furthermore, the power supply module includes a single-chip microcomputer U1, which is provided with a Vin terminal, a Vout terminal and a GND terminal, a capacitor C2 is provided at the Vin terminal, an electrolytic capacitor EC, a capacitor C1 and a resistor R1 are provided in parallel at the Vout terminal, and the GND terminal, the capacitor C2, the electrolytic capacitor EC, the capacitor C1 and the other end of the resistor R1 are grounded.

[0015] In summary, the utility model has the following beneficial effects:

[0016] By arranging a transistor in the WIFI control circuit, when the electric rice cooker is in a standby or working state, the power supply state of the WIFI control circuit is controlled by switching the on and off of the transistor, so that the power supply of the WIFI module is cut off in the standby state, thereby saving energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the control module described in the utility model.

[0018] Figure 2 It is a schematic diagram of the WIFI receiving module described in the utility model.

[0019] Figure 3 It is a schematic diagram of the WIFI transmitting module described in the utility model.

[0020] Figure 4 It is a schematic diagram of the power module described in the utility model. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with illustrations and specific embodiments.

[0022] like Figures 1 to 4 As shown, a WIFI control circuit for an electric rice cooker proposed by the utility model comprises a control module, a WIFI receiving module, a WIFI transmitting module and a power module, wherein the control module comprises a single-chip microcomputer U4, and the single-chip microcomputer U4 is provided with a RXD port, a TXD port, a GND port and a VCC port;

[0023] The RXD port is connected to one end of the protection resistor R6, the other end of the protection resistor R6 is provided with a WIFI_RX end, and is connected to the WIFI receiving module through the WIFI_RX end, and a parallel capacitor C3 is provided between the protection resistor R6 and the WIFI_RX end;

[0024] The TXD port is connected to one end of the protection resistor R7, and the other end of the protection resistor R7 is provided with a WIFI_TX end, and is connected to the WIFI transmitting module through the WIFI_TX end;

[0025] The GND port is grounded; the VCC port is connected to the collector of the transistor Q1, the base of the transistor Q1 is connected to one end of the resistor R13, the other end of the resistor R13 is provided with a circuit breaker point, a resistor R9 is provided between the resistor R13 and the circuit breaker point, a resistor R8 is provided between the base of the transistor Q1 and the resistor R13, and the resistor R8, the resistor R9 and the emitter of the transistor Q1 are used to connect the power module.

[0026] The WIFI receiving module includes a transistor Q4, the base of the transistor Q4 is connected to the resistor R10, the collector of the transistor Q4 is used to connect to the WIFI_RX end, a resistor R11 is provided between the collector of the transistor Q4 and the WIFI_RX end, the emitter of the transistor Q4 is connected to one end of the resistor R14, the other end of the resistor R14 is provided with the MCU_TX end, a resistor R12 is provided between the emitter of the transistor Q4 and the resistor R14, and the resistors R10, R11 and R12 are used to connect to the power module.

[0027] The WIFI transmitting module includes a transistor Q3, the base of the transistor Q3 is connected to the resistor R2, the emitter of the transistor Q3 is used to connect to the WIFI_TX end, a resistor R4 is provided between the collector of the transistor Q3 and the WIFI_TX end, the collector of the transistor Q4 is connected to one end of the resistor R5, the other end of the resistor R5 is provided with the MCU_RX end, a resistor R3 is provided between the collector of the transistor Q4 and the resistor R5, and the resistors R2, R3 and R4 are used to connect to the power module.

[0028] The power supply module includes a single-chip microcomputer U1, which is provided with a Vin terminal, a Vout terminal and a GND terminal, a capacitor C2 is provided at the Vin terminal, an electrolytic capacitor EC, a capacitor C1 and a resistor R1 are provided at the Vout terminal in parallel, and the GND terminal, the capacitor C2, the electrolytic capacitor EC, the capacitor C1 and the other end of the resistor R1 are grounded.

[0029] The working principle of the utility model is as follows:

[0030] By arranging a transistor in the WIFI control circuit, when the electric rice cooker is in a standby or working state, the power supply state of the WIFI control circuit is controlled by switching the on and off of the transistor, so that the power supply of the WIFI module is cut off in the standby state, thereby saving energy.

[0031] In this document, the directions or positional relationships indicated by terms such as "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "vertical", and "horizontal" are based on the directions or positional relationships shown in the accompanying drawings and are only for the clarity of the technical solution and the convenience of description. Therefore, they should not be understood as limitations on the present invention.

[0032] In this document, the terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of elements other than those listed and may also include additional elements not expressly listed.

[0033] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A WIFI control circuit for an electric rice cooker, comprising a control module, a WIFI receiving module, a WIFI transmitting module and a power module, characterized in that: The control module includes a single-chip microcomputer U4, which is provided with an RXD port, a TXD port, a GND port and a VCC port; The RXD port is connected to one end of the protection resistor R6, the other end of the protection resistor R6 is provided with a WIFI_RX end, and is connected to the WIFI receiving module through the WIFI_RX end, and a parallel capacitor C3 is provided between the protection resistor R6 and the WIFI_RX end; The TXD port is connected to one end of the protection resistor R7, and the other end of the protection resistor R7 is provided with a WIFI_TX end, and is connected to the WIFI transmitting module through the WIFI_TX end; The GND port is grounded; the VCC port is connected to the collector of the transistor Q1, the base of the transistor Q1 is connected to one end of the resistor R13, the other end of the resistor R13 is provided with a circuit breaker point, a resistor R9 is provided between the resistor R13 and the circuit breaker point, a resistor R8 is provided between the base of the transistor Q1 and the resistor R13, and the resistor R8, the resistor R9 and the emitter of the transistor Q1 are used to connect the power module.

2. The WIFI control circuit for an electric rice cooker according to claim 1, characterized in that: The WIFI receiving module includes a transistor Q4, the base of the transistor Q4 is connected to the resistor R10, the collector of the transistor Q4 is used to connect to the WIFI_RX end, a resistor R11 is provided between the collector of the transistor Q4 and the WIFI_RX end, the emitter of the transistor Q4 is connected to one end of the resistor R14, the other end of the resistor R14 is provided with the MCU_TX end, a resistor R12 is provided between the emitter of the transistor Q4 and the resistor R14, and the resistors R10, R11 and R12 are used to connect to the power module.

3. The WIFI control circuit for an electric rice cooker according to claim 1, characterized in that: The WIFI transmitting module includes a transistor Q3, the base of the transistor Q3 is connected to the resistor R2, the emitter of the transistor Q3 is used to connect to the WIFI_TX end, a resistor R4 is provided between the collector of the transistor Q3 and the WIFI_TX end, the collector of the transistor Q4 is connected to one end of the resistor R5, the other end of the resistor R5 is provided with the MCU_RX end, a resistor R3 is provided between the collector of the transistor Q4 and the resistor R5, and the resistors R2, R3 and R4 are used to connect to the power module.

4. The WIFI control circuit for an electric rice cooker according to claim 1, characterized in that: The power supply module includes a single-chip microcomputer U1, which is provided with a Vin terminal, a Vout terminal and a GND terminal, a capacitor C2 is provided at the Vin terminal, an electrolytic capacitor EC, a capacitor C1 and a resistor R1 are provided at the Vout terminal in parallel, and the GND terminal, the capacitor C2, the electrolytic capacitor EC, the capacitor C1 and the other end of the resistor R1 are grounded.

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