2.4 G wireless control system

Abstract

The utility model relates to the technical field of household appliances, in particular to a 2.4 G wireless control system, which comprises a remote control device and at least one household appliance main body in wireless communication with the remote control device, the first 2.4 G wireless communication circuit arranged in the remote control device is responsible for transmitting and receiving 2.4 GHz wireless signals, so that data exchange between the remote control device and the household appliance main body is realized. The first control circuit is used for processing user input and generating a corresponding control instruction, and the control instruction is sent out through the 2.4 G wireless communication circuit. And a second 2.4 G wireless communication circuit arranged in the household appliance main body is matched with the first 2.4 G wireless communication circuit of the remote control device to work, so that bidirectional wireless communication is realized. The communication signal conversion circuit is used for converting received wireless signals into electric signals suitable for internal processing, and the second control circuit executes corresponding operation according to received control instructions and can feed back state information to the remote control device at the same time. The device is simple in structure, high in practicability and low in cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to domestic appliance technical field, concretely relates to a 2.4G wireless control system. BACKGROUND

[0002] With the progress of science and technology and the improvement of people's living standards, more and more household appliances can be controlled and operated by remote controllers, such as small household appliances like remote-controlled fans, televisions, DVD players, air conditioners, etc. The traditional remote controller for household appliances is an infrared remote controller, which has the greatest feature that it can only perform one-way straight-line remote control, i.e. the remote controller sends out infrared signals, and the household appliance receives the infrared signals, and the command is transmitted from the remote controller to the host in one direction, and vice versa.

[0003] At present, most of the remote controllers on the market are infrared remote controllers, which emit signals through infrared light. Due to the inherent characteristics of infrared light itself, the remote control distance of the infrared remote controller is relatively short, and the effective distance of the infrared remote controller is generally a few meters to about ten or so meters. Since infrared rays are straight-line propagation and the intensity will decay with the increase of distance, the effective control range is limited. Infrared rays cannot penetrate opaque objects (such as walls, furniture, etc.), which means that the remote control operation needs "line of sight" contact, i.e. there is no obstruction between the transmitter and the receiver. This limits its application scenarios, especially in the case of multiple rooms or obstacles. The traditional infrared remote control system is usually one-way, only supporting sending instructions from the remote controller to the controlled device, and does not have the ability to receive feedback information. However, there are also some advanced two-way infrared communication systems now, but they are not mainstream. Although infrared remote control is not easily affected by electromagnetic interference, it will have some impact on infrared reception in strong light sources or electromagnetic environments close to the frequency of infrared signals. For example: the remote control operation and the host working state cannot be synchronized in real time, in this case, the user wants to operate the host to enter the desired working state through the remote controller, but the host may not be able to execute once to the point as required by the user; using the traditional infrared remote controller, the host cannot feedback information to the remote controller, so the user cannot check the current working state of the host; when the host appears abnormal, it can only be prompted by the buzzer in the host or the display on the host, and this prompt has defects, for example, when the household appliance used in the room of the elderly or children appears abnormal, or when people are sleeping, this prompt often lacks effect.

[0004] Although the infrared remote control technology is widely used in household appliances due to its low cost, low power consumption and no frequency license, it indeed has the above limitations. For more distant or special needs such as wall-penetrating application scenarios, if the household appliance and the remote controller can realize two-way communication, it will bring great convenience to people's life. The 2.4G technology is a wireless communication technology developed in the past decade, which can realize full-duplex transmission by using time division duplex transmission scheme. Therefore, the 2.4G technology can be used to develop a remote controller for two-way communication with household appliances. Practical new type content

[0005] The utility model discloses to solve the defects and the insufficient handling of prior art, provide a simple structure's 2.4G wireless control system.

[0006] To achieve the above object, the technical scheme adopted by the utility model is a 2.4G wireless control system, comprising a remote control device, and at least one household appliance main body in wireless communication with the remote control device;The first 2.4G wireless communication circuit and the first control circuit are arranged in the remote control device, the first 2.4G wireless communication circuit is electrically connected with the first control circuit, the second 2.4G wireless communication circuit, communication signal conversion circuit, level conversion circuit and second control circuit are arranged in the household appliance main body;The second 2.4G wireless communication circuit is electrically connected with the communication signal conversion circuit, the communication signal conversion circuit is electrically connected with the level conversion circuit through the socket, the level conversion circuit is electrically connected with the second control circuit, the household appliance main body and the remote control device carry out 2.4G wireless communication through the first 2.4G wireless communication circuit and the second 2.4G wireless communication circuit.

[0007] Further, the first control circuit includes a first main control chip, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first buzzer, an LED display, a first triode and a first capacitor; a fifth pin of the first main control chip is electrically connected with a 3.3V voltage, sixth and seventh pins of the first main control chip are electrically connected with the first 2.4G wireless communication circuit; one end of the first capacitor is grounded, and the other end is electrically connected with the fifth pin of the first main control chip; the first resistor and the LED display are connected in series, one end of which is electrically connected with a second pin of the first main control chip, and the other end is electrically connected with the first capacitor; the second resistor and the third resistor are connected in series, one end of which is electrically connected with the first resistor, and the other end is electrically connected with a collector of the first triode; an emitter of the first triode is grounded, one end of the fourth resistor is electrically connected with a base of the first triode, and the other end is electrically connected with a first pin of the first main control chip; one end of the fifth resistor is electrically connected with the emitter of the first triode, and the other end is electrically connected with the base of the first triode; a negative electrode of the first buzzer is electrically connected with the base of the first triode, and a positive electrode of the first buzzer is connected to a common end of the second resistor and the third resistor.

[0008] Further, the first 2.4G wireless communication circuit includes a first 2.4G wireless chip, a sixth resistor, a seventh resistor, an eighth resistor, a second capacitor, a third capacitor, a fourth capacitor, a first inductor and a first crystal oscillator; one end of the first crystal oscillator is electrically connected with an eighth pin of the first 2.4G wireless chip, and the other end is electrically connected with a second pin of the first 2.4G wireless chip; a first pin of the first 2.4G wireless chip is grounded, one end of the sixth resistor is electrically connected with the second pin of the first 2.4G wireless chip, and the other end is electrically connected with the first pin of the first 2.4G wireless chip; one end of the seventh resistor is electrically connected with a sixth pin of the first main control chip, and the other end is electrically connected with a seventh pin of the first 2.4G wireless chip, one end of the eighth resistor is electrically connected with a seventh pin of the first main control chip, and the other end is electrically connected with a sixth pin of the first 2.4G wireless chip; a fourth pin of the first 2.4G wireless chip is grounded, a fifth pin of the first 2.4G wireless chip is electrically connected with a 3.3V voltage, one end of the second capacitor is electrically connected with the fifth pin of the first 2.4G wireless chip, and the other end is electrically connected with the fourth pin of the first 2.4G wireless chip; one end of the first inductor is electrically connected with a third pin of the first 2.4G wireless chip, and the other end is connected with a 2.4G wireless antenna; one end of the third capacitor is electrically connected with the first inductor, and the other end is electrically connected with the fourth pin of the first 2.4G wireless chip; one end of the fourth capacitor is electrically connected with the first inductor, and the other end is electrically connected with the fourth pin of the first 2.4G wireless chip.

[0009] Further, the second control circuit includes a second main control chip, a fifth capacitor, a sixth capacitor, and a second buzzer, one end of the fifth capacitor and the sixth capacitor is grounded, the other end is electrically connected with the fifth pin of the second main control chip, and the other end is grounded; the fifth pin of the second main control chip is connected with a 5V voltage, the twelfth pin of the second main control chip is grounded, the seventh pin and the eighth pin of the second main control chip are respectively electrically connected with the second 2.4G wireless communication circuit; the second buzzer is electrically connected with the eleventh pin of the second main control chip.

[0010] Further, the second 2.4G wireless communication circuit includes the second 2.4G wireless chip, a ninth resistor, a tenth resistor, an eleventh resistor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a second inductor and a second crystal oscillator, one end of the second crystal oscillator is electrically connected with the eighth pin of the second 2.4G wireless chip, and the other end is electrically connected with the second pin of the second 2.4G wireless chip; the first pin of the second 2.4G wireless chip is grounded, one end of the ninth resistor is electrically connected with the second pin of the second 2.4G wireless chip, and the other end is electrically connected with the first pin of the second 2.4G wireless chip; one end of the tenth resistor is electrically connected with the communication signal conversion circuit, and the other end is electrically connected with the seventh pin of the second 2.4G wireless chip; one end of the eleventh resistor is electrically connected with the communication signal conversion circuit, and the other end is electrically connected with the sixth pin of the second 2.4G wireless chip; the fourth pin of the second 2.4G wireless chip is grounded, the fifth pin of the second 2.4G wireless chip is electrically connected with a 3.3V voltage, one end of the seventh capacitor is electrically connected with the fifth pin of the second 2.4G wireless chip, and the other end is electrically connected with the fourth pin of the second 2.4G wireless chip; one end of the second inductor is electrically connected with the third pin of the second 2.4G wireless chip, and the other end is connected with a 2.4G wireless antenna; one end of the eighth capacitor is electrically connected with the second inductor, and the other end is electrically connected with the fourth pin of the second 2.4G wireless chip; one end of the ninth capacitor is electrically connected with the second inductor, and the other end is electrically connected with the fourth pin of the second 2.4G wireless chip.

[0011] Further, the communication signal conversion circuit includes a communication signal conversion chip, a tenth capacitor, a twelfth resistor and a thirteenth resistor, one end of the twelfth resistor is electrically connected with the sixth pin of the communication signal conversion chip, and the other end is electrically connected with the level conversion circuit through a socket; one end of the thirteenth resistor is electrically connected with the fifth pin of the communication signal conversion chip, and the other end is electrically connected with the level conversion circuit through a socket; one end of the tenth capacitor is grounded, and the other end is electrically connected with the first pin of the communication signal conversion chip, and the first pin of the communication signal conversion chip is connected with a 3.3V voltage.

[0012] Further, the level conversion circuit comprises a fourteenth resistor, a fifteenth resistor, a sixteenth resistor, a seventeenth resistor, a second transistor and a third transistor; one end of the fourteenth resistor is connected with a 3.3V voltage, and the other end is connected with the base of the second transistor, the emitter of the second transistor is electrically connected with the socket, the collector of the second transistor is electrically connected with the seventh pin of the second main control chip, one end of the fifteenth resistor is connected with a 5V voltage, and the other end is electrically connected with the seventh pin of the second main control chip; the sixthteenth resistor and the seventeenth resistor are connected in series, one end of which is electrically connected with the emitter of the third transistor, and the other end is electrically connected with the base of the third transistor, the collector of the third transistor is electrically connected with the socket, and the emitter of the third transistor is electrically connected with the eighth pin of the second main control chip.

[0013] Further, the household appliance body is further provided with a power supply circuit, and the power supply circuit is electrically connected with the second main control chip and the level conversion circuit.

[0014] Further, the remote control device is further provided with a key circuit, and the key circuit is electrically connected with the first main control chip.

[0015] The utility model discloses a beneficial effect has:

[0016] The utility model provides a kind of 2.4G wireless control system remote control device, and first 2.4G wireless communication circuit responsible for sending and receiving 2.4GHz wireless signal is arranged in remote control device, and the data exchange between remote control device and household appliance body is realized.The first control circuit is used to process user input (for example, key operation) and generates corresponding control instruction, which is sent out by 2.4G wireless communication circuit.The second 2.4G wireless communication circuit arranged in household appliance body and the first 2.4G wireless communication circuit of remote control device are paired work, and realize bidirectional wireless communication.Communication signal conversion circuit is used to convert received wireless signal into suitable internal processing electrical signal, and vice versa, to ensure that signal can be correctly converted between different protocols or formats.Level conversion circuit is used to match voltage level between different parts, to ensure that signal is accurately transmitted between different voltage grade circuits.The second control circuit executes corresponding operation (such as switch, adjustment setting) according to received control instruction, and also can feedback state information to remote control device.The application has simple structure, strong practicability and low cost. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a module diagram of the utility model 2.4G wireless control system;

[0018] Fig. 2 It is the circuit principle diagram in remote control device of the utility model 2.4G wireless control system;

[0019] Fig. 3 The utility model provides a kind of circuit schematic diagram in the main body of household appliance in 2.4G wireless control system. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be apparently and completely described in conjunction with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative efforts belong to the range protected by the utility model.

[0021] It should be noted that all directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directionality indications will also change accordingly.

[0022] In addition, the description of "first", "second" and the like in the utility model is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that the person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection range required by the utility model.

[0023] The utility model provides a kind of 2.4G wireless control system.

[0024] In the embodiments of the utility model, as shown in the drawings, Fig. 1-3 The utility model discloses a kind of 2.4G wireless control system, including remote control device, and at least one household appliance main body with its wireless communication;First 2.4G wireless communication circuit and first control circuit are provided in the remote control device, the first 2.4G wireless communication circuit is electrically connected with the first control circuit, second 2.4G wireless communication circuit, communication signal conversion circuit, level conversion circuit and second control circuit are provided in the household appliance main body;The second 2.4G wireless communication circuit is electrically connected with communication signal conversion circuit, the communication signal conversion circuit is electrically connected with level conversion circuit by socket, the level conversion circuit is electrically connected with second control circuit, the household appliance main body and remote control device carry out 2.4G wireless communication by the first 2.4G wireless communication circuit and second 2.4G wireless communication circuit.

[0025] In the embodiment, the first control circuit includes a first main control chip, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first buzzer, an LED display, a first triode and a first capacitor; a fifth pin of the first main control chip is electrically connected with a 3.3V voltage, sixth and seventh pins of the first main control chip are electrically connected with the first 2.4G wireless communication circuit; one end of the first capacitor is grounded, and the other end is electrically connected with the fifth pin of the first main control chip; the first resistor and the LED display are connected in series, one end of which is electrically connected with the second pin of the first main control chip, and the other end is electrically connected with the first capacitor; the second resistor and the third resistor are connected in series, one end of which is electrically connected with the first resistor, and the other end is electrically connected with the collector of the first triode; the emitter of the first triode is grounded, one end of the fourth resistor is electrically connected with the base of the first triode, and the other end is electrically connected with the first pin of the first main control chip; one end of the fifth resistor is electrically connected with the emitter of the first triode, and the other end is electrically connected with the base of the first triode; the negative electrode of the first buzzer is electrically connected with the base of the first triode, and the positive electrode of the first buzzer is connected to the common end of the second resistor and the third resistor.

[0026] In the embodiment, the first 2.4G wireless communication circuit includes a first 2.4G wireless chip, a sixth resistor, a seventh resistor, an eighth resistor, a second capacitor, a third capacitor, a fourth capacitor, a first inductor and a first crystal oscillator; one end of the first crystal oscillator is electrically connected with the eighth pin of the first 2.4G wireless chip, and the other end is electrically connected with the second pin of the first 2.4G wireless chip; the first pin of the first 2.4G wireless chip is grounded, one end of the sixth resistor is electrically connected with the second pin of the first 2.4G wireless chip, and the other end is electrically connected with the first pin of the first 2.4G wireless chip; one end of the seventh resistor is electrically connected with the sixth pin of the first main control chip, and the other end is electrically connected with the seventh pin of the first 2.4G wireless chip, one end of the eighth resistor is electrically connected with the seventh pin of the first main control chip, and the other end is electrically connected with the sixth pin of the first 2.4G wireless chip; the fourth pin of the first 2.4G wireless chip is grounded, the fifth pin of the first 2.4G wireless chip is electrically connected with a 3.3V voltage, one end of the second capacitor is electrically connected with the fifth pin of the first 2.4G wireless chip, and the other end is electrically connected with the fourth pin of the first 2.4G wireless chip; one end of the first inductor is electrically connected with the third pin of the first 2.4G wireless chip, and the other end is connected with a 2.4G wireless antenna; one end of the third capacitor is electrically connected with the first inductor, and the other end is electrically connected with the fourth pin of the first 2.4G wireless chip; one end of the fourth capacitor is electrically connected with the first inductor, and the other end is electrically connected with the fourth pin of the first 2.4G wireless chip.

[0027] In the embodiment, the second control circuit comprises a second main control chip, a fifth capacitor, a sixth capacitor, a second buzzer, one end of the fifth capacitor and the sixth capacitor is grounded, the other end is electrically connected with the fifth pin of the second main control chip, and the other end is grounded; the fifth pin of the second main control chip is connected with a 5V voltage, the twelfth pin of the second main control chip is grounded, the seventh pin and the eighth pin of the second main control chip are respectively electrically connected with the second 2.4G wireless communication circuit; the second buzzer is electrically connected with the eleventh pin of the second main control chip.

[0028] In the embodiment, the second 2.4G wireless communication circuit comprises the second 2.4G wireless chip, a ninth resistor, a tenth resistor, an eleventh resistor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a second inductor and a second crystal oscillator; one end of the second crystal oscillator is electrically connected with the eighth pin of the second 2.4G wireless chip, and the other end is electrically connected with the second pin of the second 2.4G wireless chip; the first pin of the second 2.4G wireless chip is grounded, one end of the ninth resistor is electrically connected with the second pin of the second 2.4G wireless chip, and the other end is electrically connected with the first pin of the second 2.4G wireless chip; one end of the tenth resistor is electrically connected with the communication signal conversion circuit, and the other end is electrically connected with the seventh pin of the second 2.4G wireless chip; one end of the eleventh resistor is electrically connected with the communication signal conversion circuit, and the other end is electrically connected with the sixth pin of the second 2.4G wireless chip; the fourth pin of the second 2.4G wireless chip is grounded, the fifth pin of the second 2.4G wireless chip is electrically connected with a 3.3V voltage, one end of the seventh capacitor is electrically connected with the fifth pin of the second 2.4G wireless chip, and the other end is electrically connected with the fourth pin of the second 2.4G wireless chip; one end of the second inductor is electrically connected with the third pin of the second 2.4G wireless chip, and the other end is connected with a 2.4G wireless antenna; one end of the eighth capacitor is electrically connected with the second inductor, and the other end is electrically connected with the fourth pin of the second 2.4G wireless chip; one end of the ninth capacitor is electrically connected with the second inductor, and the other end is electrically connected with the fourth pin of the second 2.4G wireless chip.

[0029] In the embodiment, the communication signal conversion circuit comprises a communication signal conversion chip, a tenth capacitor, a twelfth resistor and a thirteenth resistor; one end of the twelfth resistor is electrically connected with the sixth pin of the communication signal conversion chip, and the other end is electrically connected with the level conversion circuit through a socket; one end of the thirteenth resistor is electrically connected with the fifth pin of the communication signal conversion chip, and the other end is electrically connected with the level conversion circuit through a socket; one end of the tenth capacitor is grounded, and the other end is electrically connected with the first pin of the communication signal conversion chip; the first pin of the communication signal conversion chip is connected with a 3.3V voltage.

[0030] In the embodiment, the level conversion circuit comprises a fourteenth resistor, a fifteenth resistor, a sixteenth resistor, a seventeenth resistor, a second transistor and a third transistor; one end of the fourteenth resistor is connected with a 3.3V voltage, and the other end is connected with the base of the second transistor, and the emitter of the second transistor is electrically connected with the socket; the collector of the second transistor is electrically connected with the seventh pin of the second main control chip, one end of the fifteenth resistor is connected with a 5V voltage, and the other end is electrically connected with the seventh pin of the second main control chip; the sixteenth resistor and the seventeenth resistor are connected in series, one end of which is electrically connected with the emitter of the third transistor, and the other end is electrically connected with the base of the third transistor, the collector of the third transistor is electrically connected with the socket, and the emitter of the third transistor is electrically connected with the eighth pin of the second main control chip.

[0031] In the embodiment, the household appliance body is further provided with a power supply circuit, which is electrically connected with the second main control chip and the level conversion circuit.

[0032] In the embodiment, the remote control device is further provided with a key circuit, which is electrically connected with the first main control chip.

[0033] The application is a wireless control system based on 2.4GHz frequency band, which allows bidirectional wireless communication between the remote control device and one or more household appliance bodies. This system overcomes some limitations of traditional infrared remote controllers, such as distance restrictions, line-of-sight requirements and one-way communication. The first 2.4G wireless communication circuit in the remote control device is responsible for sending and receiving 2.4GHz wireless signals, realizing data exchange between the remote control device and the household appliance body. The first control circuit is used to process user input (such as key operation) and generate corresponding control instructions, which are sent out through the 2.4G wireless communication circuit. The second 2.4G wireless communication circuit in the household appliance body works in pairs with the first 2.4G wireless communication circuit in the remote control device, realizing bidirectional wireless communication. The communication signal conversion circuit is used to convert the received wireless signals into electrical signals suitable for internal processing, and vice versa, ensuring that the signals can be correctly converted between different protocols or formats. The level conversion circuit is used to match the voltage levels between different parts, ensuring that the signals are accurately transmitted between circuits with different voltage levels. The second control circuit executes corresponding operations (such as switching, adjusting settings) according to the received control instructions, and also can feedback state information to the remote control device.

[0034] In actual use, when the user issues a control instruction through the remote control device, the first 2.4G wireless communication circuit converts the instruction into a 2.4GHz wireless signal and transmits it. After the second 2.4G wireless communication circuit in the home appliance main body receives the signal, it transmits it to the communication signal conversion circuit. The communication signal conversion circuit converts the wireless signal into an electrical signal and adjusts it to the appropriate voltage level through the level conversion circuit. The second control circuit performs the corresponding operation according to the received instruction. If feedback is needed, the second control circuit can generate a response signal, which is sent back to the remote control device through the level conversion circuit and the communication signal conversion circuit, and then by the second 2.4G wireless communication circuit. The first 2.4G wireless communication circuit of the remote control device receives the feedback signal from the home appliance main body and transmits it to the first control circuit to update the display or inform the user.

[0035] This design not only provides a longer control range and the ability to penetrate walls, but also supports two-way communication, allowing users to receive immediate feedback and enhancing the user experience. In addition, the 2.4GHz frequency band is one of the ISM bands that can be used worldwide without a license, so such a system can be used in most areas.

[0036] In actual use, the working status of the home appliance main body can be monitored in real time through the LED display of the remote control device, and the working status of the home appliance main body can be adjusted as needed through the remote control, and the control can be accurate in real time. The time for the home appliance main body to return the working status can be adjusted as needed.

[0037] In actual use, the home appliance main body may return the working information at intervals or according to user needs. At this time, the user can check the current status of the home appliance main body by pressing the "query" key gently according to the need through the remote control operation.

[0038] When traditional home appliances encounter some abnormalities, they can only be prompted through the second buzzer in the home appliance main body or the display on the home appliance main body. This prompt obviously has defects. For example, when used in the room of an old person or a child, such a prompt often has little effect, especially when sleeping. Therefore, by providing a first buzzer in the remote control device, the phenomenon can be greatly improved after using the 2.4G remote control device. Once an abnormality occurs, the remote control device and the home appliance main body can alarm at the same time, which can remind the guardian.

[0039] The application can also add other functional peripheral circuits according to actual needs.

[0040] It should be noted that the home appliance main body in the present application can be one of a DVD player, an air conditioner, a television, an electric fan, an electric heater, a humidifier, an air freshener, a water dispenser, an electric hair dryer, an electric shaver, an electric iron, an electric toothbrush, an electronic beauty instrument, an electronic massager, an induction cooker, a microwave oven, an electric rice cooker, a sterilization cabinet, an electric oven, a bread maker, a blender, a juicer, an electronic coffee pot, a projector, a video disc player or an electric kettle.

[0041] Specifically, the number of home appliance main bodies can be determined according to actual needs, and the remote control device can be used for one, two or more home appliances.

[0042] The above is only the preferred embodiment of the present application, and does not limit the patent range of the present application. Any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection range of the present application.

Claims

1. A 2.4G wireless control system, characterized in that, The application relates to a remote control device and at least one household appliance main body in wireless communication with the remote control device; the remote control device is internally provided with a first 2.4G wireless communication circuit and a first control circuit, the first 2.4G wireless communication circuit is electrically connected with the first control circuit, the household appliance main body is internally provided with a second 2.4G wireless communication circuit, a communication signal conversion circuit, a level conversion circuit and a second control circuit; the second 2.4G wireless communication circuit is electrically connected with the communication signal conversion circuit, the communication signal conversion circuit is electrically connected with the level conversion circuit through a socket, the level conversion circuit is electrically connected with the second control circuit, and the household appliance main body and the remote control device perform 2.4G wireless communication through the first 2.4G wireless communication circuit and the second 2.4G wireless communication circuit.

2. The 2.4G wireless control system of claim 1, wherein, The first control circuit comprises a first main control chip, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first buzzer, an LED display, a first triode and a first capacitor; the fifth pin of the first main control chip is electrically connected with a 3.3V voltage, the sixth pin and the seventh pin of the first main control chip are electrically connected with the first 2.4G wireless communication circuit; one end of the first capacitor is grounded, and the other end is electrically connected with the fifth pin of the first main control chip; the first resistor and the LED display are connected in series, one end is electrically connected with the second pin of the first main control chip, and the other end is electrically connected with the first capacitor; the second resistor and the third resistor are connected in series, one end is electrically connected with the first resistor, and the other end is electrically connected with the collector of the first triode; the emitter of the first triode is grounded, one end of the fourth resistor is electrically connected with the base of the first triode, and the other end is electrically connected with the first pin of the first main control chip; one end of the fifth resistor is electrically connected with the emitter of the first triode, and the other end is electrically connected with the base of the first triode; the negative electrode of the first buzzer is electrically connected with the base of the first triode, and the positive electrode of the first buzzer is connected to the common end of the second resistor and the third resistor.

3. The 2.4G wireless control system of claim 2, wherein, The first 2.4G wireless communication circuit includes a first 2.4G wireless chip, a sixth resistor, a seventh resistor, an eighth resistor, a second capacitor, a third capacitor, a fourth capacitor, a first inductor and a first crystal oscillator; one end of the first crystal oscillator is electrically connected to an eighth pin of the first 2.4G wireless chip, and the other end is electrically connected to a second pin of the first 2.4G wireless chip; a first pin of the first 2.4G wireless chip is grounded, one end of the sixth resistor is electrically connected to the second pin of the first 2.4G wireless chip, and the other end is electrically connected to the first pin of the first 2.4G wireless chip; one end of the seventh resistor is electrically connected to a sixth pin of the first main control chip, and the other end is electrically connected to a seventh pin of the first 2.4G wireless chip; one end of the eighth resistor is electrically connected to a seventh pin of the first main control chip, and the other end is electrically connected to a sixth pin of the first 2.4G wireless chip; a fourth pin of the first 2.4G wireless chip is grounded, a fifth pin of the first 2.4G wireless chip is electrically connected to a 3.3V voltage, one end of the second capacitor is electrically connected to the fifth pin of the first 2.4G wireless chip, and the other end is electrically connected to the fourth pin of the first 2.4G wireless chip; one end of the first inductor is electrically connected to a third pin of the first 2.4G wireless chip, and the other end is connected to a 2.4G wireless antenna; one end of the third capacitor is electrically connected to the first inductor, and the other end is electrically connected to the fourth pin of the first 2.4G wireless chip; one end of the fourth capacitor is electrically connected to the first inductor, and the other end is electrically connected to the fourth pin of the first 2.4G wireless chip.

4. The 2.4G wireless control system of claim 1, wherein, The second control circuit includes a second main control chip, a fifth capacitor, a sixth capacitor, a second buzzer, the fifth capacitor and the sixth capacitor are connected in parallel, one end is grounded, the other end is electrically connected to a fifth pin of the second main control chip, and the other end is grounded; the fifth pin of the second main control chip is connected to a 5V voltage, the twelfth pin of the second main control chip is grounded, the seventh pin and the eighth pin of the second main control chip are respectively electrically connected to the second 2.4G wireless communication circuit; the second buzzer is electrically connected to the eleventh pin of the second main control chip.

5. The 2.4G wireless control system of claim 4, wherein, The second 2.4G wireless communication circuit includes a second 2.4G wireless chip, a ninth resistor, a tenth resistor, an eleventh resistor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a second inductor and a second crystal oscillator; one end of the second crystal oscillator is electrically connected to an eighth pin of the second 2.4G wireless chip, and the other end is electrically connected to a second pin of the second 2.4G wireless chip; a first pin of the second 2.4G wireless chip is grounded, one end of the ninth resistor is electrically connected to the second pin of the second 2.4G wireless chip, and the other end is electrically connected to the first pin of the second 2.4G wireless chip; one end of the tenth resistor is electrically connected to the communication signal conversion circuit, and the other end is electrically connected to a seventh pin of the second 2.4G wireless chip; one end of the eleventh resistor is electrically connected to the communication signal conversion circuit, and the other end is electrically connected to a sixth pin of the second 2.4G wireless chip; a fourth pin of the second 2.4G wireless chip is grounded, a fifth pin of the second 2.4G wireless chip is electrically connected to a 3.3V voltage, one end of the seventh capacitor is electrically connected to the fifth pin of the second 2.4G wireless chip, and the other end is electrically connected to the fourth pin of the second 2.4G wireless chip; one end of the second inductor is electrically connected to a third pin of the second 2.4G wireless chip, and the other end is connected to a 2.4G wireless antenna; one end of the eighth capacitor is electrically connected to the second inductor, and the other end is electrically connected to the fourth pin of the second 2.4G wireless chip; one end of the ninth capacitor is electrically connected to the second inductor, and the other end is electrically connected to the fourth pin of the second 2.4G wireless chip.

6. The 2.4G wireless control system of claim 5, wherein, The communication signal conversion circuit includes a communication signal conversion chip, a tenth capacitor, a twelfth resistor and a thirteenth resistor; one end of the twelfth resistor is electrically connected to a sixth pin of the communication signal conversion chip, and the other end is electrically connected to the level conversion circuit through a socket; one end of the thirteenth resistor is electrically connected to a fifth pin of the communication signal conversion chip, and the other end is electrically connected to the level conversion circuit through the socket; one end of the tenth capacitor is grounded, and the other end is electrically connected to a first pin of the communication signal conversion chip; the first pin of the communication signal conversion chip is connected to a 3.3V voltage.

7. The 2.4G wireless control system of claim 6, wherein, The level conversion circuit includes a fourteenth resistor, a fifteenth resistor, a sixteenth resistor, a seventeenth resistor, a second transistor and a third transistor; one end of the fourteenth resistor is connected to a 3.3V voltage, and the other end is connected to a base of the second transistor; an emitter of the second transistor is electrically connected to the socket; a collector of the second transistor is electrically connected to a seventh pin of the second main control chip; one end of the fifteenth resistor is connected to a 5V voltage, and the other end is electrically connected to the seventh pin of the second main control chip; the sixteenth resistor and the seventeenth resistor are connected in series, one end is electrically connected to an emitter of the third transistor, and the other end is electrically connected to a base of the third transistor; a collector of the third transistor is electrically connected to the socket, and an emitter of the third transistor is electrically connected to an eighth pin of the second main control chip.

8. The 2.4G wireless control system of claim 7, wherein, The household appliance main body is internally provided with a power supply circuit, which is electrically connected with the second main control chip and the level conversion circuit.

9. The 2.4G wireless control system of claim 3, wherein, The remote control device is internally provided with a key circuit, which is electrically connected with the first main control chip.

Images