Curtain control device

Abstract

The utility model discloses a curtain control device, and relates to the technical field of intelligent home control. The device comprises a host and at least two motors, the host and the motors are connected through a low-voltage bus, and integration of power transmission and communication interaction is achieved. The host comprises a main control unit, a power conversion module and a communication module, the main control unit analyzes a wireless or local control signal to generate an instruction, and the instruction is sent to the low-voltage bus after being coded by the communication module; the motor comprises a drive control unit, a communication module and an execution mechanism, and the communication module receives and analyzes the instruction, drives the motor to act and supports state data return. Through the low-voltage bus multiplexing design, the wiring structure is simplified, and independent or combined control of multiple motors is supported; a position feedback module is arranged in the motor to achieve closed-loop limiting, and signal stability is guaranteed in combination with a half-duplex communication protocol. The system has the advantages of simple deployment, accurate control, high reliability and the like.

Description

Technical Field

[0001] This utility model relates to the field of curtain control technology, and in particular to a curtain control device suitable for intelligent control scenarios of curtains. Background Technology

[0002] With the development of smart home technology, the demand for intelligent curtain control devices is increasing. Existing technologies, such as the patent document CN201263033Y entitled "A Driving Device," disclose a structural design for a driving device, providing technical reference for related fields. However, for curtain control scenarios, existing technologies still have significant shortcomings: Firstly, at the multi-device control level, it is difficult to achieve flexible independent control and diversified combination control of multiple motors, failing to meet users' needs for various curtain opening and closing modes; secondly, in terms of power and communication transmission design, the integration of power supply and communication interaction functions is low, lacking an efficient integrated transmission scheme, resulting in complex system wiring and low control efficiency. To solve the above technical problems and improve the intelligence and integration level of curtain control, this utility model proposes an improved curtain control device. Through an innovative host and motor collaborative architecture design, it achieves the integration of power transmission and communication interaction, while optimizing multi-motor control logic to meet users' diverse curtain control needs. Utility Model Content

[0003] The purpose of this invention is to provide a curtain control device. Addressing the problems of insufficient flexibility in multi-motor control and low integration of power and communication transmission in existing curtain control devices, this invention achieves integrated power transmission and communication interaction through a collaborative architecture design of the host and motors. It supports independent control of multiple motors and diverse combination control, thereby improving the intelligence level of curtain control and user experience.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: a curtain control device, comprising a main unit and at least two motors, wherein the main unit and the motors are connected via a low-voltage bus;

[0005] The host includes a main control unit, a power conversion module, and a host communication module. The power conversion module is used to convert external power into low-voltage DC power and supply power to the system. The main control unit is used to receive wireless control signals or local input signals, generate control commands, and convert the control commands into communication signals through the communication module and send them to the low-voltage bus.

[0006] The motor includes a drive control unit, a motor communication module, and an actuator. The motor communication module is used to receive communication signals on the low-voltage bus and parse them into control commands. The drive control unit controls the actuator to operate based on the control commands. The motor communication module is also used to convert status data into communication signals and send them back to the low-voltage bus when the motor needs to report its status. The host communication module receives and parses the signals.

[0007] As a further improvement to the technical solution of this utility model, the main control unit adopts the SM1503 chip. The pins of the SM1503 chip are connected to the wireless control signal receiving module, the local input button module and the communication module, which are used to realize signal parsing, command generation and status feedback control.

[0008] As a further improvement to the technical solution of this utility model, both the host communication module and the motor communication module are low-voltage carrier communication modules. The communication chip of the low-voltage carrier communication module is connected to the low-voltage bus through a signal matching circuit. The signal matching circuit includes a matching resistor connected in series between the data transmission pin of the communication chip and the low-voltage bus, and a filter capacitor connected in parallel on the communication line.

[0009] As a further improvement to the technical solution of this utility model, the actuator includes a DC motor and a motor drive chip. The drive control unit outputs a PWM signal through the motor drive chip to control the forward rotation, reverse rotation, or stop operation of the DC motor.

[0010] As a further improvement to the technical solution of this utility model, the motor further includes a position feedback module, which is connected to the drive control unit and is used to collect the operating position signal of the actuator and feed it back to the drive control unit; the drive control unit performs limit control or position calibration operation based on the position feedback signal.

[0011] As a further improvement to the technical solution of this utility model, the position feedback module is a Hall sensor, which is disposed on the rotating shaft side of the DC motor to detect changes in the magnetic poles of the rotating shaft and generate pulse signals; the drive control unit calculates the number of rotations of the motor by pulse counting to realize closed-loop position control.

[0012] As a further improvement to the technical solution of this utility model, the main control unit has a built-in instruction parsing algorithm, which includes: performing CRC verification on the received wireless control signal, extracting the target motor ID and action instruction after the verification is passed, and encapsulating it into a communication signal of a preset format; the communication signal of the preset format includes a start code, target ID, instruction type, data segment and check code.

[0013] As a further improvement to the technical solution of this utility model, both the host communication module and the motor communication module adopt a half-duplex communication protocol. After sending a control command, the host communication module releases the bus permission, and the motor communication module triggers the return of status data by detecting the idle state of the bus.

[0014] As a further improvement to the technical solution of this utility model, the low-voltage bus is a two-wire line, in which one wire is a power transmission line and the other wire is a communication signal line; or the two wires are multiplexed simultaneously as a carrier for power transmission and communication signal transmission.

[0015] As a further improvement to the technical solution of this utility model, the host also integrates an indicator light; the indicator light is connected to the main control unit and is used to display the system working status in real time.

[0016] This utility model has the following beneficial effects:

[0017] Integrated transmission: Power supply and bidirectional communication between the host and the motor are realized synchronously through two low-voltage buses, simplifying wiring and improving system integration.

[0018] Diverse control: Supports independent on / off control of a single motor, as well as combined control modes such as multiple motors running in the same direction or in opposite directions, to meet users' needs for various curtain opening and closing scenarios.

[0019] Convenience of interaction: Combining remote control RF radio frequency signal and button dual input methods, along with the host indicator light to display the system working status in real time (such as signal reception, motor execution, communication interaction status, etc.), improves the ease of operation and the degree of system visualization.

[0020] Precise control: The motor is equipped with a Hall feedback module to collect the motor's operating position signal in real time, which helps to realize limit setting and precise stopping control, thereby improving control accuracy. Attached Figure Description

[0021] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0022] Figure 1 This is a system architecture diagram of the curtain control device according to an embodiment of the present invention, showing the structure in which the host and the motor are connected via a low-voltage bus;

[0023] Figure 2 This is a circuit schematic diagram of the main control unit in an embodiment of the present invention, illustrating the signal processing and transmission logic;

[0024] Figure 3 This is a circuit diagram of the low-voltage carrier communication module according to an embodiment of the present invention, illustrating the signal processing and transmission logic. Detailed Implementation

[0025] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0026] It should be noted that all directional indicators (such as up, down, left, right, front, back, upper end, lower end, top, bottom, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0027] In this utility model, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination should be considered non-existent and not within the scope of protection claimed by this utility model.

[0029] The present invention will be further described in detail below with reference to the accompanying drawings.

[0030] like Figures 1 to 3 As shown, this utility model provides a technical solution: a curtain control device, including a main unit and at least two motors, wherein the main unit and the motors are connected via a low-voltage bus;

[0031] The host includes a main control unit, a power conversion module, and a host communication module. The power conversion module is used to convert external power into low-voltage DC power and supply power to the system. The main control unit is used to receive wireless control signals or local input signals, generate control commands, and convert the control commands into communication signals through the communication module and send them to the low-voltage bus.

[0032] The motor includes a drive control unit, a motor communication module, and an actuator. The motor communication module receives communication signals from the low-voltage bus and parses them into control commands. The drive control unit controls the actuator based on these control commands. The motor communication module also converts status data into communication signals and sends them back to the low-voltage bus when the motor needs to report its status, where they are received and parsed by the host communication module. This invention simplifies system wiring and reduces installation complexity by synchronously transmitting power and communication signals via the low-voltage bus. The bidirectional communication design between the host and the motor supports independent control and coordinated operation of multiple motors, improving the flexibility and intelligence of curtain control. A unified power supply module avoids redundancy caused by independent power supplies for multiple motors, improving system reliability.

[0033] Specifically, in this embodiment, the main control unit uses an SM1503 chip. The pins of the SM1503 chip are connected to a wireless control signal receiving module, a local input button module, and a communication module, used for signal parsing, command generation, and status feedback control. The high integration design of the SM1503 chip simplifies the hardware circuitry of the main control unit and improves the efficiency of signal parsing and command generation. The collaborative design of the wireless control signal receiving module and the local input button module provides diverse operating methods and enhances the user experience. It should be noted that the wireless control signal receiving module can specifically be an RF input module. The main control unit is used to parse the remote control signal received by the RF input module or the button signal from the local input button module, generate control commands, and send the encoded signal to the low-voltage bus through the host communication module.

[0034] Specifically, in this embodiment, both the host communication module and the motor communication module are low-voltage carrier communication modules. The communication chip of the low-voltage carrier communication module is connected to the low-voltage bus through a signal matching circuit. The signal matching circuit includes a matching resistor connected in series between the data transmission pin of the communication chip and the low-voltage bus, and a filter capacitor connected in parallel on the communication line. The low-voltage carrier communication module enables the multiplexing of power lines and communication lines, further reducing wiring requirements. The signal matching circuit (matching resistor + filter capacitor) optimizes signal transmission quality, suppresses bus noise interference, and improves communication stability.

[0035] Specifically, in this embodiment, the actuator includes a DC motor and a motor driver chip. The drive control unit outputs a PWM signal through the motor driver chip to control the forward, reverse, or stop operation of the DC motor. The DC motor, combined with PWM drive control, enables precise adjustment of motor speed and direction, meeting the refined control requirements for the opening and closing speed and force of the curtains. The motor driver chip (such as L298N) provides overcurrent protection, enhancing system safety.

[0036] Specifically, in this embodiment, the motor further includes a position feedback module connected to the drive control unit. This module collects the operating position signal of the actuator and feeds it back to the drive control unit. The drive control unit performs limit control or position calibration based on the position feedback signal. The position feedback module monitors the motor's operating position in real time, supports dynamic limit settings, and prevents motor overtravel damage. Closed-loop control based on position feedback improves the accuracy of the curtain's opening and closing position.

[0037] Specifically, in this embodiment, the position feedback module is a Hall sensor, which is installed on the shaft side of the DC motor to detect changes in the magnetic poles of the shaft and generate pulse signals. The drive control unit calculates the number of motor rotations by counting pulses, thus achieving closed-loop position control. The Hall sensor achieves non-contact position detection through pulse counting, improving feedback accuracy and equipment lifespan. The linear correspondence between the pulse signal and the number of motor rotations simplifies the position calculation logic and reduces the computational burden on the main control unit.

[0038] Specifically, in this embodiment, the main control unit incorporates a built-in instruction parsing algorithm. This algorithm includes: performing CRC verification on the received wireless control signal; after successful verification, extracting the target motor ID and action command, and encapsulating them into a communication signal of a preset format; the preset format communication signal includes a start code, target ID, instruction type, data segment, and checksum. The CRC verification mechanism ensures the integrity of instruction transmission and reduces the risk of misoperation. The preset format communication signal (including target ID, checksum, etc.) supports precise addressing of multiple motors and avoids instruction conflicts.

[0039] Specifically, in this embodiment, both the host communication module and the motor communication module employ a half-duplex communication protocol. After sending a control command, the host communication module releases bus permissions, and the motor communication module triggers status data feedback by detecting the bus idle state. This half-duplex communication protocol, combined with the bus permission release mechanism, ensures orderly communication between the host and the motor, avoiding signal collisions caused by bus contention. Idle state detection triggers feedback, reducing communication latency and improving the real-time performance of data reporting.

[0040] Specifically, in this embodiment, the low-voltage bus is a two-wire line, with one wire serving as a power transmission line and the other as a communication signal line; or both wires can be multiplexed simultaneously for both power and communication signal transmission. The two-wire design (power line + communication line) further simplifies wiring costs, or improves bus utilization through multiplexing. The multiplexing design reduces the requirements for cable specifications, offers strong compatibility, and is suitable for different installation scenarios.

[0041] Specifically, in this embodiment, the host also integrates indicator lights; these indicator lights are connected to the main control unit and are used to display the system's operating status in real time. The indicator lights provide real-time feedback on the system status (such as running, fault, or communication abnormality), enhancing the user's perception of the system status. Different states are distinguished by color or flashing patterns, improving the intuitiveness of human-computer interaction.

[0042] In summary, the core advantages of the overall technical solution of this utility model are:

[0043] Highly integrated: Power and communication multiplexed bus reduces reliance on cabling and lowers deployment costs.

[0044] Flexible control: Supports independent / combined operation of multiple motors to meet the diverse opening and closing needs of curtains.

[0045] High reliability: The system operates stably through multiple mechanisms, including hardware filtering, software verification, and closed-loop control.

[0046] User-friendliness: Multi-dimensional interactive design including remote control, buttons, and indicator lights enhances ease of operation and visual appeal.

[0047] Reference Figures 1 to 3 The system architecture and hardware configuration of this utility model are as follows:

[0048] Host implementation details:

[0049] The main unit's casing is made of flame-retardant ABS material. The internal main control module (main control unit) uses the SM1503 chip as the core controller. Its pins are connected to the RF input module (model SYN470R), the key input module (matrix key circuit), the low-voltage carrier board (integrated SSC0123 communication chip), and the LED three-color indicator (red / green / blue).

[0050] The power conversion module specifically adopts an AC to DC module, which uses an AC220V to DC12V / 2A power supply scheme. The input terminal is connected to the mains power through the L / N terminals, and the output terminal is connected to the power pin of the main control module and the low-voltage bus power line to provide stable power to the host and motor.

[0051] In the low-voltage carrier board (low-voltage carrier communication module) circuit, the TX / RX pins of the communication chip SSC0123 are connected to the low-voltage bus communication line through a signal matching resistor (120Ω), and a filter capacitor (0.1μF) is connected in parallel to filter out high-frequency interference and ensure signal transmission stability.

[0052] Motor implementation details:

[0053] The motor main control module (drive control unit) uses the STM8S003 chip, whose pins are connected to the low-voltage carrier board (SSC0123 chip), the motor drive module (L298N driver chip), and the Hall feedback module (AH49E linear Hall sensor).

[0054] The motor drive module is connected to the motor forward and reverse control lines through the OUT1 / OUT2 pins of the L298N chip. The Hall feedback module collects the position signal of the motor shaft magnet in real time and transmits the voltage signal to the ADC pin of the STM8S003 for calculating the motor rotation position.

[0055] The low-voltage bus power line is directly connected to the motor power input terminal, and the communication line is connected to the TX / RX pins of the low-voltage carrier board. Before signal transmission, the bus noise is eliminated by an RC filter circuit (10kΩ resistor in series + 104 capacitor grounded).

[0056] System Workflow

[0057] Power supply and initialization:

[0058] After the host is connected to the mains power, the AC to DC module outputs DC12V power, the main control module starts and initializes the low-voltage carrier board, and the system is ready by the LED indicator light being constantly green.

[0059] After the motor obtains power through the low-voltage bus, the STM8S003 chip starts a self-test program, the Hall feedback module calibrates the initial position, and sends a device ready signal to the host through the low-voltage carrier board.

[0060] Command issuance and execution:

[0061] The user sends an RF signal (such as "Motor 1 forward") via remote control. After the host RF module receives the signal, the SM1503 chip executes a verification algorithm (CRC16 check). After the verification is successful, the instruction is parsed and an encoded signal containing the target motor ID, action type (forward / reverse / stop) and runtime is generated.

[0062] The encoded signal is modulated by the low-voltage carrier board and sent to the bus. After the low-voltage carrier board of the target motor detects the instruction matching the ID, the STM8S003 chip controls the L298N driver module to output the corresponding level, driving the motor to perform the action. At the same time, the Hall feedback module monitors the position in real time and feeds it back to the main control chip.

[0063] Data reporting and feedback:

[0064] When the motor needs to report its status (such as limit switch trigger, operation completed), the STM8S003 chip encapsulates the data packet, and the low-voltage carrier board detects when the bus is idle (the host releases a 10ms data window every 200ms) and immediately uploads the data.

[0065] After receiving the data, the SM1503 chip parses and updates the system status. For example, if the motor reports a limit switch trigger, the host controls the LED indicator to flash red and broadcasts a stop command through the bus to force all motors to stop.

[0066] Key Design Highlights

[0067] Anti-interference design: The bus communication adopts Manchester encoding, combined with hardware filtering and software verification (CRC + timeout retransmission mechanism) to ensure communication reliability in complex environments.

[0068] Dynamic limit setting: The user triggers the motor to run slowly by pressing the "learning mode" button on the remote control. The Hall feedback module records the extreme position and stores it in the Flash memory of the STM8S003 chip, realizing adaptive limit calibration.

[0069] Combined control logic: The host supports preset commands (such as "curtain half-open mode"), and after parsing, sends multi-motor commands synchronously through the bus to control some motors to rotate forward and others to rotate in reverse, so as to achieve a variety of curtain opening and closing effects.

[0070] Implementation Case:

[0071] Taking dual-motor control as an example: when the user presses the "opening mode" button on the remote control, the host sends a synchronization command (motor 1 rotates forward + motor 2 rotates in reverse), and the two motors run in opposite directions. The Hall module monitors the position in real time. When motor 1 reaches the preset limit, it actively reports a stop signal, and the host immediately stops the action of motor 2 to ensure that the opening and closing of the curtains are synchronized and accurate.

[0072] In summary, compared with the prior art, this utility model has the following beneficial effects:

[0073] Integrated transmission: Power supply and bidirectional communication between the host and the motor are realized synchronously through two low-voltage buses, simplifying wiring and improving system integration.

[0074] Diverse control: Supports independent on / off control of a single motor, as well as combined control modes such as multiple motors running in the same direction or in opposite directions, to meet users' needs for various curtain opening and closing scenarios.

[0075] Convenience of interaction: Combining remote control RF radio frequency signal and button dual input methods, and with the host indicator light displaying the system working status in real time (such as signal reception, motor execution, communication interaction status, etc.), the ease of operation and system visualization are improved.

[0076] Precise control: The motor is equipped with a Hall feedback module to collect the motor's operating position signal in real time, which helps to realize limit setting and precise stopping control, thereby improving control accuracy.

[0077] The technical solutions provided by the embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the embodiments of this utility model. The description of the above embodiments is only for helping to understand the principles of the embodiments of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the embodiments of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A curtain control device, comprising a main unit and at least two motors, characterized in that: The host and the motor are connected via a low-voltage bus; The host includes a main control unit, a power conversion module, and a host communication module. The power conversion module is used to convert external power into low-voltage DC power and supply power to the system. The main control unit is used to receive wireless control signals or local input signals, generate control commands, and convert the control commands into communication signals through the communication module and send them to the low-voltage bus. The motor includes a drive control unit, a motor communication module, and an actuator. The motor communication module is used to receive communication signals on the low-voltage bus and parse them into control commands. The drive control unit controls the actuator to operate based on the control commands. The motor communication module is also used to convert status data into communication signals and send them back to the low-voltage bus when the motor needs to report its status. The host communication module receives and parses the signals.

2. The curtain control device according to claim 1, characterized in that: The main control unit uses the SM1503 chip. The pins of the SM1503 chip are connected to the wireless control signal receiving module, the local input button module, and the communication module, respectively, to realize signal parsing, command generation, and status feedback control.

3. A curtain control device according to claim 1, characterized in that: Both the host communication module and the motor communication module are low-voltage carrier communication modules. The communication chip of the low-voltage carrier communication module is connected to the low-voltage bus through a signal matching circuit. The signal matching circuit includes a matching resistor connected in series between the data transmission pin of the communication chip and the low-voltage bus, and a filter capacitor connected in parallel on the communication line.

4. A curtain control device according to claim 1, characterized in that: The actuator includes a DC motor and a motor drive chip. The drive control unit outputs a PWM signal through the motor drive chip to control the forward, reverse, or stop operation of the DC motor.

5. A curtain control device according to claim 4, characterized in that: The motor also includes a position feedback module, which is connected to the drive control unit and is used to collect the operating position signal of the actuator and feed it back to the drive control unit. The drive control unit performs limit control or position calibration operations based on the position feedback signal.

6. A curtain control device according to claim 5, characterized in that: The position feedback module is a Hall sensor, which is installed on the shaft side of the DC motor to detect changes in the magnetic poles of the shaft and generate pulse signals; the drive control unit calculates the number of rotations of the motor by counting pulses to achieve closed-loop position control.

7. A curtain control device according to claim 1, characterized in that: The main control unit has a built-in instruction parsing algorithm, which includes: performing CRC verification on the received wireless control signal, extracting the target motor ID and action instruction after the verification is successful, and encapsulating it into a communication signal in a preset format; the communication signal in the preset format includes a start code, target ID, instruction type, data segment and check code.

8. A curtain control device according to claim 1, characterized in that: Both the host communication module and the motor communication module adopt a half-duplex communication protocol. After sending a control command, the host communication module releases bus permissions, and the motor communication module triggers status data feedback by detecting the idle state of the bus.

9. A curtain control device according to claim 1, characterized in that: The low-voltage bus is a two-wire line, with one wire being a power transmission line and the other a communication signal line; or both wires can be multiplexed simultaneously as a power transmission and communication signal transmission carrier.

10. A curtain control device according to claim 1, characterized in that: The host also integrates indicator lights; the indicator lights are connected to the main control unit and are used to display the system's working status in real time.

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