A universal 433MHz remote control converter
By using a universal 433MHz remote control converter, a seamless connection between the smart home system and the curtain motor was achieved through a protocol conversion module and radio frequency circuit, solving the problems of complex hardware compatibility and protocol adaptation, and meeting the requirements for low power consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGSHAN ENZD ELECTRONICS CO LTD
- Filing Date
- 2025-05-20
- Publication Date
- 2026-07-31
AI Technical Summary
Existing smart home systems suffer from poor hardware compatibility with curtain motors, complex protocol adaptation, and difficulty in meeting low power consumption requirements.
A universal 433MHz remote control converter is provided, which includes a protocol conversion module and a 433MHz radio frequency circuit. It uses the en-wave protocol to convert the control commands of the smart home system into level signals and sends the control commands to the curtain motor through the 433MHz radio frequency circuit.
It enables simple integration between different curtain motors and smart home systems, reducing hardware costs and development complexity while meeting low power consumption requirements.
Smart Images
Figure CN224581932U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of intelligent control, and in particular to a universal 433MHz remote control converter. Background Technology
[0002] There are numerous curtain motor manufacturers on the market, offering a wide variety of products and models. When smart home systems interface with these curtain motors, they often encounter the following problems: Poor hardware compatibility: Connecting to curtain motors with different protocol types requires connecting to different modules at the hardware level, such as Bluetooth modules, Zigbee modules, and Wi-Fi modules. The same motor needs to be adapted to multiple solutions, resulting in high hardware costs. The protocol adaptation is complex: a custom control protocol between the curtain motor and the module is required. Different smart home systems have different control protocols, and the controlled devices need to be repeatedly adapted, resulting in a long development cycle and difficult maintenance. Low power consumption requirements are difficult to meet: Some curtain motors have requirements for standby power consumption (such as battery-powered curtain motors). When connecting to these types of curtain motors, the hardware and software requirements of the module are higher. Summary of the Invention
[0003] The purpose of this application is to provide a universal 433MHz remote control converter, which can simplify the docking process between smart home systems and multiple curtain motors, and improve the versatility and convenience of remote controls.
[0004] To achieve the above objectives, this application provides the following solution: This application provides a universal 433MHz remote control converter, including: The protocol conversion module is wirelessly connected to the smart home system. It is used to obtain the motor control protocol of the curtain according to the control command of the curtain issued by the smart home system, and to encode the control command in the motor control protocol into a level signal using the en-wave protocol. A 433MHz radio frequency circuit, connected to the protocol conversion module, is used to receive the level signal and convert the level signal into a radio frequency signal to send to the curtain motor to control the motor operation.
[0005] According to the specific embodiments provided in this application, the following technical effects are disclosed: This application provides a universal 433MHz remote control converter that uses the en-wave protocol to simulate control commands for different curtain motors, converting the motor control commands into level signals. This eliminates the need for additional control protocols for the curtain motors, enabling different curtain motors to interface with smart home systems. Simultaneously, a 433MHz radio frequency circuit converts the level signals into radio frequency signals and sends them to the motor, achieving motor control. This process requires no changes to the curtain motor hardware, making the entire interface process simple and convenient.
[0006] [-0000] Description of the attached drawings [+0000] In order to more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0007] Figure 1 This is a functional schematic diagram of a universal 433MHz remote control converter according to an embodiment of this application; Figure 2 A circuit diagram of a protocol conversion module provided in one embodiment of this application; Figure 3 A schematic diagram of a 433MHz radio frequency circuit provided in an embodiment of this application; Figure 4 A schematic diagram of a switching power supply circuit provided in an embodiment of this application; Figure 5 A schematic diagram of a voltage regulator circuit provided for another embodiment of this application; Figure 6 This is a circuit diagram of a voltage conversion module provided in one embodiment of this application. Detailed Implementation
[0008] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0009] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0010] like Figure 1As shown, a universal 433MHz remote control converter is provided, comprising a protocol conversion module 11 and a 433MHz radio frequency circuit 12. The protocol conversion module 11 is wirelessly connected to a smart home system. The protocol conversion module 11 is used to obtain the motor control protocol of the curtain based on the control commands issued by the smart home system, and to encode the control commands in the motor control protocol into a level signal using the en-wave protocol. The 433MHz radio frequency circuit 12 is connected to the protocol conversion module 11. The 433MHz radio frequency circuit 12 is used to receive the level signal and convert the level signal into a radio frequency signal, which is then sent to the curtain motor to control its operation.
[0011] like Figure 2 As shown, the protocol conversion module 11 is composed of an 80L module, but it can also be a protocol conversion module for other smart home systems. The 80L module pre-stores control protocols for curtain motors from multiple curtain motor manufacturers, and the MCU on the 80L module runs the en-wave protocol. Pin 7 of the 80L module serves as the DATA interface, which is the output terminal of the protocol conversion module 11.
[0012] like Figure 3 As shown, the 433MHz RF circuit specifically includes: capacitors C8, C9, C16, and C15; resonant inductors L2, L3, and L4; RF chip U2; resistors R1 and R2; antenna mount TX1; and crystal oscillator unit.
[0013] The antenna interface terminal of the antenna mount TX1 is used to connect the radio frequency antenna. The wiring terminals of the antenna mount TX1 are connected to one end of capacitor C9 and one end of resonant inductor L3 respectively; the other end of capacitor C9 is grounded. The other end of resonant inductor L3 is connected to one end of capacitor C8 and one end of resonant inductor L2 respectively; the other end of capacitor C8 is grounded. The other end of resonant inductor L2 is connected to one end of capacitor C16. The other end of capacitor C16 is connected to one end of resonant inductor L4 and the PAOUT pin of radio frequency chip U2 respectively; the other end of resonant inductor L4 is connected to the other end of capacitor C15 and the VDD pin of radio frequency chip U2 and the output terminal of voltage conversion module respectively; one end of capacitor C15 is grounded.
[0014] The XIN pin of RF chip U2 is connected to the output terminal of the crystal oscillator unit, and the XOUT pin of RF chip U2 is connected to the input terminal of the crystal oscillator unit. The crystal oscillator unit specifically includes crystal chip Y2, capacitor C2, and capacitor C7. The IN pin of crystal chip Y2 is connected to the other end of capacitor C2 and the XOUT pin of RF chip U2, respectively; one end of capacitor C2 and the GND pin of crystal chip Y2 are both grounded. The OUT pin of crystal chip Y2 is connected to one end of capacitor C7 and the XIN pin of RF chip U2, respectively; the other end of capacitor C7 and the GND pin of crystal chip Y2 are both grounded.
[0015] The DIN pin of RF chip U2 is connected to one end of resistor R2 and one end of resistor R1, respectively. The other end of resistor R1 is grounded, and the other end of resistor R2 is connected to the output of protocol conversion module 11. In this embodiment, the RF chip is a WL4456 chip.
[0016] In one exemplary embodiment, such as Figure 1 As shown, the universal 433MHz remote control converter also includes a power module 13, which is connected to the protocol conversion module 11 and the 433MHz radio frequency circuit 12 respectively. The power module 13 is used to supply power to the protocol conversion module 11 and the 433MHz radio frequency circuit 12.
[0017] Specifically, the power module 13 includes a switching power supply circuit, a voltage regulator circuit, and a voltage conversion module. The input terminal of the switching power supply circuit is connected to AC power, and the output terminal of the switching power supply circuit is connected to the input terminal of the voltage regulator circuit. The first output terminal of the voltage regulator circuit is connected to the input terminal of the voltage conversion module, the second output terminal of the voltage regulator circuit is connected to the voltage input terminal of the protocol conversion module, and the output terminal of the voltage conversion module is connected to the voltage input terminal of the 433MHz radio frequency circuit.
[0018] The switching power supply circuit converts 220VAC AC voltage to 3.3VDC DC (or 5VDC, depending on the back-end circuitry); in this embodiment, it converts to 5VDC DC. For example... Figure 4 As shown, the switching power supply circuit specifically includes: switching power supply chip U11, safety capacitor C1, capacitor C13, capacitor C14, capacitor C17, resistor R3, resistor R4, resistor R5, resistor R6, resistor R7, resistor R8, resistor R9, resistor R10, resistor R11, resistor R12, polarized capacitor C10, polarized capacitor C11, polarized capacitor C12, rectifier bridge D11, diode D12, diode D13, diode D14, inductor L1, varistor VR1, wire-wound resistor R13, and fuse F1.
[0019] The CS pin of the switching power supply chip U11 is connected to one end of resistor R6, and the other end of resistor R6 and the other end of capacitor C14 are grounded; the VDD pin of the switching power supply chip U11 is connected to one end of capacitor C14, the cathode of diode D14 and the other end of resistor R8 respectively; the anode of diode D14 is connected to one end of resistor R11, and the other end of resistor R11 is connected to the other end of resistor R10 and one end of the auxiliary winding NAUX of transformer T1 respectively.
[0020] The FB pin of the switching power supply chip U11 is connected to one end of resistor R10 and the other end of resistor R9, respectively. The GND pin of the switching power supply chip U11 and one end of resistor R9 are both grounded. The other end of the auxiliary winding NAUX of transformer T1 and one end of safety capacitor C1 are both grounded.
[0021] One end of resistor R8 is connected to the other end of resistor R3. The first DC terminal of rectifier bridge D11 is connected to the positive terminal of polarized capacitor C12, one end of resistor R3, one end of resistor R4, one end of resistor R5, one end of resistor R12, and one end of the primary winding of transformer T1. The negative terminal of polarized capacitor C12 is grounded. The other end of resistor R12 is connected to one end of capacitor C17. The other end of capacitor C17 is connected to the other end of resistor R4, the other end of resistor R5, and the cathode of diode D13. The anode of diode D13 is connected to the other end of the primary winding of transformer T1 and pin C of switching power supply chip U11.
[0022] One end of the secondary winding of transformer T1 is connected to the anode of diode D12; the cathode of diode D12 is connected to the positive terminal of polarized capacitor C11 and one end of inductor L1, respectively; the negative terminal of polarized capacitor C11 is grounded; the input terminal of the voltage regulator circuit is connected to the other end of inductor L1, the positive terminal of polarized capacitor C10, one end of capacitor C13, and one end of resistor R27, respectively; the negative terminal of polarized capacitor C10, the other end of capacitor C13, the other end of resistor R7, and the other end of the secondary winding of transformer T1 are all grounded.
[0023] The second DC terminal of rectifier bridge D11 is grounded. The first AC terminal of rectifier bridge D11 is connected to one end of varistor VR1 and the live wire N of AC power. The second AC terminal of rectifier bridge D11 is connected to the other end of wire-wound resistor R13 and the other end of varistor VR1. One end of wire-wound resistor R13 is connected to one end of fuse F1, and the other end of fuse F1 is connected to the neutral wire L of AC power. The switching power supply chip in this embodiment is OB25133.
[0024] like Figure 5 As shown, the voltage regulator circuit specifically includes: voltage regulator chip U3, resonant inductor B1, capacitor C3 and capacitor C4.
[0025] The Vin pin of the voltage regulator chip U3 is connected to the output terminal of the switching power supply circuit; the Vout pin of the voltage regulator chip U3 is connected to one end of the resonant inductor B1; the input terminal of the voltage conversion module is connected to the Vout pin of the voltage regulator chip U3 and one end of the resonant inductor B1 respectively; the voltage input terminal of the protocol conversion module is connected to the other end of the resonant inductor B1, one end of capacitor C3, and one end of capacitor C4 respectively; the other ends of capacitor C3 and capacitor C4 are grounded.
[0026] like Figure 6 As shown, the voltage conversion module specifically includes: resonant inductor B2, capacitor C5, and capacitor C6; One end of the resonant inductor B2 is connected to the first output terminal of the voltage regulator circuit, and the voltage input terminal of the 433MHz RF circuit is connected to the other end of the resonant inductor B2, the other end of capacitor C5, and the other end of capacitor C6, respectively; one end of capacitor C5 and the other end of capacitor C6 are both grounded.
[0027] This application controls curtain motors by simulating control command data, enabling the curtain motors to interface with different smart home systems. A single product can connect to curtain motors from various manufacturers. The interface process is convenient, requiring no changes to the curtain motor hardware or additional control protocols. It is simple to use, easy to operate, and has broad coverage.
[0028] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0029] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.
Claims
1. A universal 433 MHz remote control converter, characterized in that, include: The protocol conversion module is wirelessly connected to the smart home system. It is used to obtain the motor control protocol of the curtain according to the control command of the curtain issued by the smart home system, and to encode the control command in the motor control protocol into a level signal using the en-wave protocol. A 433MHz radio frequency circuit, connected to the protocol conversion module, is used to receive the level signal and convert the level signal into a radio frequency signal to send to the curtain motor to control the motor operation.
2. The universal 433 MHz remote control converter of claim 1, wherein, The 433MHz radio frequency circuit specifically includes: capacitors C8, C9, C16, and C15; resonant inductors L2, L3, and L4; radio frequency chip U2; resistors R1 and R2; antenna mount TX1; and crystal oscillator unit. The antenna interface terminal of the antenna mount TX1 is used to connect the radio frequency antenna. The terminals of the antenna mount TX1 are connected to one end of capacitor C9 and one end of resonant inductor L3 respectively; the other end of capacitor C9 is grounded. The other end of resonant inductor L3 is connected to one end of capacitor C8 and one end of resonant inductor L2 respectively; the other end of capacitor C8 is grounded. The other end of resonant inductor L2 is connected to one end of capacitor C16. The other end of capacitor C16 is connected to one end of resonant inductor L4 and the PAOUT pin of radio frequency chip U2 respectively; the other end of resonant inductor L4 is connected to the other end of capacitor C15 and the VDD pin of radio frequency chip U2 and the output terminal of voltage conversion module respectively; one end of capacitor C15 is grounded. The XIN pin of the RF chip U2 is connected to the output terminal of the crystal oscillator unit, and the XOUT pin of the RF chip U2 is connected to the input terminal of the crystal oscillator unit. The DIN pin of the RF chip U2 is connected to one end of resistor R2 and one end of resistor R1, respectively. The other end of resistor R1 is grounded, and the other end of resistor R2 is connected to the output of the protocol conversion module.
3. The universal 433 MHz remote control converter of claim 2, wherein, The radio frequency chip is a WL4456 chip.
4. The universal 433 MHz remote control converter of claim 1, wherein, Also includes: A power supply module is connected to both the protocol conversion module and the 433MHz radio frequency circuit, and is used to supply power to both the protocol conversion module and the 433MHz radio frequency circuit.
5. The universal 433 MHz remote control converter of claim 4, wherein, The power module includes a switching power supply circuit, a voltage regulator circuit, and a voltage conversion module; The input terminal of the switching power supply circuit is connected to AC power, and the output terminal of the switching power supply circuit is connected to the input terminal of the voltage regulator circuit; the first output terminal of the voltage regulator circuit is connected to the input terminal of the voltage conversion module, the second output terminal of the voltage regulator circuit is connected to the voltage input terminal of the protocol conversion module, and the output terminal of the voltage conversion module is connected to the voltage input terminal of the 433MHz radio frequency circuit.
6. The universal 433 MHz remote control converter of claim 5, wherein, The switching power supply circuit specifically includes: a switching power supply chip U11, a safety capacitor C1, a capacitor C13, a capacitor C14, a capacitor C17, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a polarized capacitor C10, a polarized capacitor C11, a polarized capacitor C12, a rectifier bridge D11, a diode D12, a diode D13, a diode D14, an inductor L1, a varistor VR1, a wire-wound resistor R13, and a fuse F1; The CS pin of the switching power supply chip U11 is connected to one end of resistor R6, and the other end of resistor R6 and the other end of capacitor C14 are grounded; the VDD pin of the switching power supply chip U11 is connected to one end of capacitor C14, the cathode of diode D14 and the other end of resistor R8; the anode of diode D14 is connected to one end of resistor R11, and the other end of resistor R11 is connected to the other end of resistor R10 and one end of the auxiliary winding NAUX of transformer T1. The FB pin of the switching power supply chip U11 is connected to one end of resistor R10 and the other end of resistor R9, respectively. The GND pin of the switching power supply chip U11 and one end of resistor R9 are both grounded. The other end of the auxiliary winding NAUX of transformer T1 and one end of safety capacitor C1 are both grounded. One end of resistor R8 is connected to the other end of resistor R3. The first DC terminal of rectifier bridge D11 is connected to the positive terminal of polarized capacitor C12, one end of resistor R3, one end of resistor R4, one end of resistor R5, one end of resistor R12, and one end of the primary winding of transformer T1. The negative terminal of polarized capacitor C12 is grounded. The other end of resistor R12 is connected to one end of capacitor C17. The other end of capacitor C17 is connected to the other end of resistor R4, the other end of resistor R5, and the cathode of diode D13. The anode of diode D13 is connected to the other end of the primary winding of transformer T1 and pin C of switching power supply chip U11. One end of the secondary winding of transformer T1 is connected to the anode of diode D12; the cathode of diode D12 is connected to the positive terminal of polarized capacitor C11 and one end of inductor L1, respectively; the negative terminal of polarized capacitor C11 is grounded; the input terminal of the voltage regulator circuit is connected to the other end of inductor L1, the positive terminal of polarized capacitor C10, one end of capacitor C13, and one end of resistor R27, respectively; the negative terminal of polarized capacitor C10, the other end of capacitor C13, the other end of resistor R7, and the other end of the secondary winding of transformer T1 are all grounded; The second DC terminal of rectifier bridge D11 is grounded. The first AC terminal of rectifier bridge D11 is connected to one end of varistor VR1 and the live wire N terminal of AC power, respectively. The second AC terminal of rectifier bridge D11 is connected to the other end of wire-wound resistor R13 and the other end of varistor VR1, respectively. One end of wire-wound resistor R13 is connected to one end of fuse F1, and the other end of fuse F1 is connected to the neutral wire L terminal of AC power.
7. The universal 433 MHz remote control converter of claim 6, wherein, The switching power supply chip is the OB25133 chip.
8. The universal 433 MHz remote control converter of claim 7, wherein, The voltage regulator circuit specifically includes: voltage regulator chip U3, resonant inductor B1, capacitor C3 and capacitor C4; The Vin pin of the voltage regulator chip U3 is connected to the output terminal of the switching power supply circuit; the Vout pin of the voltage regulator chip U3 is connected to one end of the resonant inductor B1; the input terminal of the voltage conversion module is connected to the Vout pin of the voltage regulator chip U3 and one end of the resonant inductor B1 respectively; the voltage input terminal of the protocol conversion module is connected to the other end of the resonant inductor B1, one end of capacitor C3, and one end of capacitor C4 respectively; the other ends of capacitor C3 and capacitor C4 are grounded.
9. The universal 433 MHz remote control converter of claim 8, wherein, The voltage regulator chip is an AMS1117 chip.
10. The universal 433 MHz remote control converter of claim 9, wherein, The voltage conversion module specifically includes: resonant inductor B2, capacitor C5, and capacitor C6; One end of the resonant inductor B2 is connected to the first output terminal of the voltage regulator circuit, and the voltage input terminal of the 433MHz radio frequency circuit is connected to the other end of the resonant inductor B2, the other end of the capacitor C5, and the other end of the capacitor C6, respectively. One end of capacitor C5 and the other end of capacitor C6 are both grounded.