A 2.4G transceiver module circuit for smart appliances

Abstract

The utility model proposes a 2.4G transceiver module circuit of an intelligent appliance. The output end of a 2.4G wireless output signal circuit is connected with a second transmission antenna through a first transmission antenna. The 2.4G wireless output signal circuit is used to output a 2.4G wireless signal. The output end of the second antenna is connected with an input end of a 2.4G wireless receiving signal circuit. The 2.4G wireless receiving signal circuit is used to output a 2.4G wireless signal. The output end of the 2.4G wireless receiving signal circuit is connected with an input end of a 3.3V to 5V level conversion circuit. The 3.3V to 5V level conversion circuit is connected with an MCU circuit through a second interface. The 2.4G wireless receiving signal circuit is used to convert an analog signal into a digital signal, and signal preprocessing is performed to reduce the subsequent MCU circuit processing burden and improve accuracy. The utility model has a simple structure, replaces the existing complex circuit structure, and greatly reduces the production cost.

Description

Technical Field

[0001] The utility model relates to the technical field of electricity, and more specifically, to a 2.4G transceiver module circuit of an intelligent electrical appliance. Background Art

[0002] The application of wireless communication technology is becoming more and more extensive. As an important communication setting, the 2.4G wireless module is convenient, efficient and stable. It is widely used in the Internet of Things, wireless remote controls, smart appliances, and health monitoring.

[0003] The 2.4G module circuit in the existing smart appliances has a complex structure and high cost, and does not pre-process the input signal, resulting in low processing efficiency.

[0004] In view of this, the utility model proposes a 2.4G transceiver module circuit for intelligent electrical appliances with simple structure, low cost and high efficiency. Utility Model Content

[0005] The purpose of the utility model is to provide a 2.4G transceiver module circuit for intelligent electrical appliances with simple structure, low cost and high efficiency.

[0006] A 2.4G transceiver module circuit for intelligent electrical appliances, comprising a control switch, a 2.4G wireless output signal circuit, a 2.4G wireless receiving signal circuit, a first transmission antenna, a second transmission antenna, an MCU circuit, a first interface, a second interface, a step-down circuit, and a 3.3V to 5V level conversion circuit, characterized in that: the first interface is used to provide a 3.3V power supply, the second interface is used to provide a communication port for connecting a 5V power supply to the MCU circuit, the step-down circuit is used to convert 5V to a 3.3V power supply, the output end of the control switch is connected to the input end of the 2.4G wireless output signal circuit The control switch is used to output a corresponding switch signal, the output end of the 2.4G wireless output signal circuit is connected to the second transmission antenna through the first transmission antenna, the 2.4G wireless output signal circuit is used to output a 2.4G wireless signal, the output end of the second antenna is connected to the input end of the 2.4G wireless receiving signal circuit, the 2.4G wireless receiving signal circuit is used to output a 2.4G wireless signal, the output end of the 2.4G wireless receiving signal circuit is connected to the input end of the 3.3V to 5V level conversion circuit, and the 3.3V to 5V level conversion circuit is connected to the MCU circuit through the second interface.

[0007] Furthermore, the control switch includes a switch K1, a switch K2, and a switch K3. One end of the switch K1 is connected to pin 2 of the 2.4G wireless output signal chip U1, one end of the switch K2 is connected to pin 3 of the 2.4G wireless output signal chip U1, and one end of the switch K3 is connected to pin 4 of the 2.4G wireless output signal chip U1. The other ends of the switches K1, K2, and K3 are connected in parallel and then grounded.

[0008] In some embodiments, the buck circuit includes a buck chip U1, a capacitor C8, and a capacitor C9. The buck chip U1 is used to convert 5V into a 3.3V power supply. The capacitor C8 is connected to the input end of the buck chip U1, and the capacitor C9 is connected to the output end of the buck chip U1. The capacitors C8 and C9 are used for filtering.

[0009] In some embodiments, the second interface includes an interface CN1, the 3.3V to 5V level conversion circuit includes an NMOS tube Q1A and an NMOS tube Q1B, pin 3 of the 2.4G wireless receiving signal chip U2 is connected to one end of the NMOS tube Q1B, and the other end of the NMOS tube Q1B is respectively connected to pin 1 and pin 3 of the interface CN1, pin 4 of the 2.4G wireless receiving signal chip U2 is connected to one end of the NMOS tube Q1A, and the other end of the NMOS tube Q1B is respectively connected to pin 1 and pin 2 of the interface CN1.

[0010] Furthermore, a resistor R3 is connected between pin 3 of the 2.4G wireless receiving signal chip U2 and the NMOS tube Q1B, a resistor R4 is connected between pin 1 of the interface CN1 and the NMOS tube Q1B, a resistor R1 is connected between pin 4 of the 2.4G wireless receiving signal chip U2 and the NMOS tube Q1A, and a resistor R2 is connected between pin 1 of the interface CN1 and the NMOS tube Q1A. The resistors R1, R2, R3, and R4 are all used to limit the current.

[0011] In some embodiments, the first transmission antenna includes an antenna E1, one end of the antenna E1 is connected to pin 8 of the 2.4G wireless output signal chip U1, and the other end of the antenna E1 is grounded. A capacitor C5 is provided between the antenna E1 and pin 8 of the 2.4G wireless output signal chip U1, and the capacitor C5 is used to match impedance and improve transmission efficiency; the second transmission antenna includes an antenna E2, one end of the antenna E2 is connected to pin 8 of the 2.4G wireless receiving signal chip U2, and the other end of the antenna E2 is grounded. A capacitor C10 is provided between the antenna E2 and pin 8 of the 2.4G wireless receiving signal chip U2, and the capacitor C10 is used to match impedance and improve transmission efficiency.

[0012] In some embodiments, the 2.4G wireless output signal circuit is also connected to a first crystal oscillator circuit, which is used to provide a circuit clock signal for the 2.4G wireless output signal circuit, and the first crystal oscillator circuit is composed of a crystal oscillator Y1, a capacitor C2, and a capacitor C1, and the crystal oscillator Y1, the capacitor C1, and the capacitor C2 are connected in series to ground; the 2.4G wireless receiving signal circuit is also connected to a second crystal oscillator circuit, which is used to provide a circuit clock signal for the 2.4G wireless receiving signal circuit, and the second crystal oscillator circuit is composed of a crystal oscillator Y2, a capacitor C4, and a capacitor C5, and the crystal oscillator Y2, the capacitor C4, and the capacitor C5 are connected in series to ground.

[0013] In some embodiments, pin 5 of the 2.4G wireless output signal chip U1 is also connected to capacitors C3 and C4, which play a role of filtering and decoupling; pin 5 of the 2.4G wireless receiving signal chip U2 is also connected to capacitors C6 and C7, which play a role of filtering and decoupling.

[0014] In some implementations, the 2.4G wireless output signal circuit and the 2.4G wireless receiving signal circuit are both connected to an LED detection circuit for providing feedback on the circuit status.

[0015] In some implementations, the 2.4G wireless output signal circuit and the 2.4G wireless receiving signal circuit are both connected to an LED detection circuit for providing feedback on the circuit status.

[0016] In some implementations, the models of the 2.4G wireless output signal chip U1 and the 2.4G wireless receiving signal chip U2 are both XP9952PE8.

[0017] Beneficial effects of the utility model: the utility model proposes a 2.4G transceiver module circuit for intelligent appliances, the output end of the 2.4G wireless output signal circuit is connected to the second transmission antenna through the first transmission antenna, the 2.4G wireless output signal circuit is used to output the 2.4G wireless signal, the second antenna output end is connected to the input end of the 2.4G wireless receiving signal circuit, the 2.4G wireless receiving signal circuit is used to output the 2.4G wireless signal, the output end of the 2.4G wireless receiving signal circuit is connected to the input end of the 3.3V to 5V level conversion circuit, the 3.3V to 5V level conversion circuit is connected to the MCU circuit through the second interface, the 2.4G wireless receiving signal circuit is used to convert the analog signal into a digital signal, and the signal is preprocessed, thereby reducing the subsequent MCU circuit processing burden and improving the accuracy, and the structure is simple, replacing the existing complex circuit structure, greatly reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a circuit diagram of a 2.4G wireless output signal circuit of a 2.4G transceiver module circuit of a smart appliance of the present application.

[0019] Figure 2 This is a circuit diagram of a 2.4G wireless receiving signal circuit of a 2.4G transceiver module circuit of a smart appliance of the present application.

[0020] Figure 3 This is a circuit diagram of a 3.3V to 5V level conversion circuit of a 2.4G transceiver module circuit of a smart appliance of the present application.

[0021] Figure 4This is a circuit diagram of a step-down circuit of a 2.4G transceiver module circuit of a smart appliance of the present application.

[0022] Figure 5 This is a circuit diagram of the first interface and the second interface of a 2.4G transceiver module circuit of a smart appliance in the present application.

[0023] Figure 6 This is a circuit diagram of a first transmission antenna and a second transmission antenna of a 2.4G transceiver module circuit of a smart appliance of the present application.

[0024] The following specific implementation manner will further illustrate the present utility model in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0025] The following examples are described to assist the understanding of the present application, and the examples are not and should not be interpreted in any way as limiting the scope of protection of the present application.

[0026] In the following description, those skilled in the art will recognize that throughout this discussion, components may be described as separate functional units (which may include sub-units), but those skilled in the art will recognize that various components or portions thereof may be divided into separate components or may be integrated together (including within a single system or component).

[0027] At the same time, the connections between components or systems are not intended to be limited to direct connections, rather, the data between these components may be modified, reformatted, or otherwise changed by intermediate components. In addition, additional or fewer connections may be used. It should also be noted that the terms "coupled," "connected," or "input" should be understood to include direct connections, indirect connections through one or more intermediate devices, and wireless connections.

[0028] Embodiment 1:

[0029] like Figure 1 As shown, it is a circuit diagram of a 2.4G wireless output signal circuit of a 2.4G transceiver module circuit of a smart appliance of the present application; Figure 2 As shown in FIG. 1 , it is a circuit diagram of a 2.4G wireless receiving signal circuit of a 2.4G transceiver module circuit of a smart appliance of the present application; Figure 3 As shown, it is a circuit diagram of a 3.3V to 5V level conversion circuit of a 2.4G transceiver module circuit of a smart appliance of the present application; Figure 4 As shown, it is a circuit diagram of a step-down circuit of a 2.4G transceiver module circuit of a smart appliance of the present application; Figure 5 As shown, it is a circuit diagram of the first interface and the second interface of a 2.4G transceiver module circuit of a smart appliance of the present application; Figure 6As shown, it is a circuit schematic diagram of the first transmission antenna and the second transmission antenna of a 2.4G transceiver module circuit of an intelligent appliance of the present application, the model of the 2.4G wireless output signal chip U1 and the 2.4G wireless receiving signal chip U2 are both XP9952PE8, a 2.4G transceiver module circuit of an intelligent appliance, including a control switch, a 2.4G wireless output signal circuit, a 2.4G wireless receiving signal circuit, a first transmission antenna, a second transmission antenna, an MCU circuit, a first interface, a second interface, a step-down circuit, and a 3.3V to 5V level conversion circuit, characterized in that: the first interface is used to provide a 3.3V power supply, and the second interface is used to provide a communication port for connecting a 5V power supply to the MCU circuit, The step-down circuit is used to convert 5V into a 3.3V power supply. The output end of the control switch is connected to the input end of the 2.4G wireless output signal circuit. The control switch is used to output a corresponding switch signal. The output end of the 2.4G wireless output signal circuit is connected to the second transmission antenna through the first transmission antenna. The 2.4G wireless output signal circuit is used to output a 2.4G wireless signal. The output end of the second antenna is connected to the input end of the 2.4G wireless receiving signal circuit. The 2.4G wireless receiving signal circuit is used to output a 2.4G wireless signal. The output end of the 2.4G wireless receiving signal circuit is connected to the input end of the 3.3V to 5V level conversion circuit. The 3.3V to 5V level conversion circuit is connected to the MCU circuit through the second interface.

[0030] The control switch includes switch K1, switch K2, and switch K3. One end of switch K1 is connected to pin 2 of the 2.4G wireless output signal chip U1, one end of switch K2 is connected to pin 3 of the 2.4G wireless output signal chip U1, and one end of switch K3 is connected to pin 4 of the 2.4G wireless output signal chip U1. The other ends of switches K1, K2, and K3 are connected in parallel and then grounded.

[0031] The step-down circuit includes a step-down chip U1, a capacitor C8, and a capacitor C9. The step-down chip U1 is used to convert 5V into a 3.3V power supply. The capacitor C8 is connected to the input end of the step-down chip U1, and the capacitor C9 is connected to the output end of the step-down chip U1. The capacitors C8 and C9 are used for filtering.

[0032] The second interface includes an interface CN1, the 3.3V to 5V level conversion circuit includes an NMOS tube Q1A and an NMOS tube Q1B, the 3rd pin of the 2.4G wireless receiving signal chip U2 is connected to one end of the NMOS tube Q1B, and the other end of the NMOS tube Q1B is respectively connected to the 1st pin and the 3rd pin of the interface CN1, the 4th pin of the 2.4G wireless receiving signal chip U2 is connected to one end of the NMOS tube Q1A, and the other end of the NMOS tube Q1B is respectively connected to the 1st pin and the 2nd pin of the interface CN1.

[0033] A resistor R3 is also connected between pin 3 of the 2.4G wireless receiving signal chip U2 and the NMOS tube Q1B, a resistor R4 is also connected between pin 1 of the interface CN1 and the NMOS tube Q1B, a resistor R1 is also connected between pin 4 of the 2.4G wireless receiving signal chip U2 and the NMOS tube Q1A, and a resistor R2 is also connected between pin 1 of the interface CN1 and the NMOS tube Q1A. The resistors R1, R2, R3, and R4 are all used to play a current limiting role.

[0034] The first transmission antenna includes an antenna E1, one end of which is connected to pin 8 of the 2.4G wireless output signal chip U1, and the other end of the antenna E1 is grounded. A capacitor C5 is provided between the antenna E1 and pin 8 of the 2.4G wireless output signal chip U1, and the capacitor C5 is used to match impedance and improve transmission efficiency; the second transmission antenna includes an antenna E2, one end of which is connected to pin 8 of the 2.4G wireless receiving signal chip U2, and the other end of the antenna E2 is grounded. A capacitor C10 is provided between the antenna E2 and pin 8 of the 2.4G wireless receiving signal chip U2, and the capacitor C10 is used to match impedance and improve transmission efficiency.

[0035] The 2.4G wireless output signal circuit is also connected to a first crystal oscillator circuit for providing a circuit clock signal for the 2.4G wireless output signal circuit, the first crystal oscillator circuit is composed of a crystal oscillator Y1, a capacitor C2, and a capacitor C1, and the crystal oscillator Y1, the capacitor C1, and the capacitor C2 are connected in series to ground; the 2.4G wireless receiving signal circuit is also connected to a second crystal oscillator circuit for providing a circuit clock signal for the 2.4G wireless receiving signal circuit, the second crystal oscillator circuit is composed of a crystal oscillator Y2, a capacitor C4, and a capacitor C5, and the crystal oscillator Y2, the capacitor C4, and the capacitor C5 are connected in series to ground.

[0036] Pin 5 of the 2.4G wireless output signal chip U1 is also connected to capacitors C3 and C4, which play a role in filtering and decoupling; pin 5 of the 2.4G wireless receiving signal chip U2 is also connected to capacitors C6 and C7, which play a role in filtering and decoupling.

[0037] The 2.4G wireless output signal circuit and the 2.4G wireless receiving signal circuit are both connected to an LED detection circuit for playing the role of feedback circuit status.

[0038] The 2.4G wireless output signal circuit and the 2.4G wireless receiving signal circuit are both connected to an LED detection circuit for playing the role of feedback circuit status.

[0039] Beneficial effects of the utility model: the utility model proposes a 2.4G transceiver module circuit for intelligent appliances, the output end of the 2.4G wireless output signal circuit is connected to the second transmission antenna through the first transmission antenna, the 2.4G wireless output signal circuit is used to output the 2.4G wireless signal, the second antenna output end is connected to the input end of the 2.4G wireless receiving signal circuit, the 2.4G wireless receiving signal circuit is used to output the 2.4G wireless signal, the output end of the 2.4G wireless receiving signal circuit is connected to the input end of the 3.3V to 5V level conversion circuit, the 3.3V to 5V level conversion circuit is connected to the MCU circuit through the second interface, the 2.4G wireless receiving signal circuit is used to convert the analog signal into a digital signal, the accuracy is improved, the structure is simple, it replaces the existing complex circuit structure, and the production cost is greatly reduced.

[0040] Although the present application has disclosed multiple aspects and embodiments, other aspects and embodiments will be obvious to those skilled in the art, and several modifications and improvements may be made without departing from the concept of the present application, all of which belong to the protection scope of the present application. The multiple aspects and embodiments disclosed in the present application are only for illustration and are not intended to limit the present application. The actual protection scope of the present application shall be subject to the claims.

Claims

1. A 2.4G transceiver module circuit for intelligent electrical appliances, comprising a control switch, a 2.4G wireless output signal circuit, a 2.4G wireless receiving signal circuit, a first transmission antenna, a second transmission antenna, an MCU circuit, a first interface, a second interface, a step-down circuit, and a 3.3V to 5V level conversion circuit, characterized in that: The first interface is used to provide a 3.3V power supply, the second interface is used to provide a communication port for connecting a 5V power supply to the MCU circuit, the step-down circuit is used to convert 5V to a 3.3V power supply, the control switch output end is connected to the 2.4G wireless output signal circuit input end, the control switch is used to output a corresponding switch signal, the 2.4G wireless output signal circuit output end is connected to the second transmission antenna through the first transmission antenna, the 2.4G wireless output signal circuit is used to output a 2.4G wireless signal, the second antenna output end is connected to the 2.4G wireless receiving signal circuit input end, the 2.4G wireless receiving signal circuit is used to output a 2.4G wireless signal, the 2.4G wireless receiving signal circuit output end is connected to the 3.3V to 5V level conversion circuit input end, and the 3.3V to 5V level conversion circuit is connected to the MCU circuit through the second interface.

2. The 2.4G transceiver module circuit of the intelligent appliance as claimed in claim 1, characterized in that: The control switch includes switch K1, switch K2, and switch K3. One end of switch K1 is connected to pin 2 of the 2.4G wireless output signal chip U1, one end of switch K2 is connected to pin 3 of the 2.4G wireless output signal chip U1, and one end of switch K3 is connected to pin 4 of the 2.4G wireless output signal chip U1. The other ends of switches K1, K2, and K3 are connected in parallel and then grounded.

3. The 2.4G transceiver module circuit of the intelligent appliance as claimed in claim 1, characterized in that: The step-down circuit includes a step-down chip U1, a capacitor C8, and a capacitor C9. The step-down chip U1 is used to convert 5V into a 3.3V power supply. The capacitor C8 is connected to the input end of the step-down chip U1, and the capacitor C9 is connected to the output end of the step-down chip U1. The capacitors C8 and C9 are used for filtering.

4. The 2.4G transceiver module circuit of the intelligent appliance as claimed in claim 1, characterized in that: The second interface includes an interface CN1, the 3.3V to 5V level conversion circuit includes an NMOS tube Q1A and an NMOS tube Q1B, the 3rd pin of the 2.4G wireless receiving signal chip U2 is connected to one end of the NMOS tube Q1B, and the other end of the NMOS tube Q1B is respectively connected to the 1st pin and the 3rd pin of the interface CN1, the 4th pin of the 2.4G wireless receiving signal chip U2 is connected to one end of the NMOS tube Q1A, and the other end of the NMOS tube Q1B is respectively connected to the 1st pin and the 2nd pin of the interface CN1.

5. The 2.4G transceiver module circuit of the intelligent appliance as claimed in claim 4, characterized in that: A resistor R3 is also connected between pin 3 of the 2.4G wireless receiving signal chip U2 and the NMOS tube Q1B, a resistor R4 is also connected between pin 1 of the interface CN1 and the NMOS tube Q1B, a resistor R1 is also connected between pin 4 of the 2.4G wireless receiving signal chip U2 and the NMOS tube Q1A, and a resistor R2 is also connected between pin 1 of the interface CN1 and the NMOS tube Q1A. The resistors R1, R2, R3, and R4 are all used to play a current limiting role.

6. The 2.4G transceiver module circuit of the intelligent appliance as claimed in claim 1, characterized in that: The first transmission antenna includes an antenna E1, one end of which is connected to pin 8 of the 2.4G wireless output signal chip U1, and the other end of the antenna E1 is grounded. A capacitor C5 is provided between the antenna E1 and pin 8 of the 2.4G wireless output signal chip U1, and the capacitor C5 is used to match impedance and improve transmission efficiency; the second transmission antenna includes an antenna E2, one end of which is connected to pin 8 of the 2.4G wireless receiving signal chip U2, and the other end of the antenna E2 is grounded. A capacitor C10 is provided between the antenna E2 and pin 8 of the 2.4G wireless receiving signal chip U2, and the capacitor C10 is used to match impedance and improve transmission efficiency.

7. The 2.4G transceiver module circuit of the intelligent appliance as claimed in claim 1, characterized in that: The 2.4G wireless output signal circuit is also connected to a first crystal oscillator circuit for providing a circuit clock signal for the 2.4G wireless output signal circuit, the first crystal oscillator circuit is composed of a crystal oscillator Y1, a capacitor C2, and a capacitor C1, and the crystal oscillator Y1, the capacitor C1, and the capacitor C2 are connected in series to ground; the 2.4G wireless receiving signal circuit is also connected to a second crystal oscillator circuit for providing a circuit clock signal for the 2.4G wireless receiving signal circuit, the second crystal oscillator circuit is composed of a crystal oscillator Y2, a capacitor C4, and a capacitor C5, and the crystal oscillator Y2, the capacitor C4, and the capacitor C5 are connected in series to ground.

8. The 2.4G transceiver module circuit of the intelligent appliance as claimed in claim 1, characterized in that: The 5th pin of the 2.4G wireless output signal chip U1 is also connected to capacitors C3 and C4, which play a role of filtering and decoupling; Pin 5 of the 2.4G wireless receiving signal chip U2 is also connected to capacitors C6 and C7, which play a role of filtering and decoupling.

9. The 2.4G transceiver module circuit of the intelligent appliance as claimed in claim 1, characterized in that: The 2.4G wireless output signal circuit and the 2.4G wireless receiving signal circuit are both connected to an LED detection circuit for playing the role of feedback circuit status.

10. The 2.4G transceiver module circuit of the intelligent appliance as claimed in claim 1, characterized in that: The models of the 2.4G wireless output signal chip U1 and the 2.4G wireless receiving signal chip U2 are both XP9952PE8.

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