A two-way hair dryer controller

Abstract

The utility model relates to hair dryer control technical field discloses a kind of two-way hair dryer controller, including shell module, power management module, the inside of the shell module is separately provided with communication module, main control unit, drive module, input module and display module, the main control unit is electrically connected with input module respectively, and is bidirectionally electrically connected with drive module, and is bidirectionally electrically connected with communication module, and is electrically connected with display module, the main control unit is bidirectionally electrically connected with voice control module, the voice control module is electrically connected with power management module and main control unit respectively, and the voice control module is set in the inside of shell. In the utility model, by modularization integrated architecture, controller has two-way independent control efficiency, multi-modal operation convenience and multistage security protection capability, and the control precision and reliability of hair dryer under different scenes are improved.

Description

Technical Field

[0001] This utility model relates to the field of hair dryer control technology, and in particular to a dual-channel hair dryer controller. Background Technology

[0002] A dual-channel hair dryer is a type of hair dryer that achieves differentiated drying effects through a dual-channel, dual-motor, or dual-function design. Its core feature lies in controlling airflow, temperature, or additional functions through two independent paths to improve drying efficiency, styling flexibility, and hair care effects.

[0003] Traditional hair dryers typically offer only a single control mode, such as a simple on / off switch, fan speed adjustment, and temperature control. In scenarios where multiple hair dryers need to be used simultaneously, such as hair salons, school public bathrooms, or large stadiums requiring rapid drying, users must manually operate each hair dryer individually, which is cumbersome and fails to provide unified and convenient control. Furthermore, existing hair dryer control devices cannot flexibly customize settings for multiple hair dryers based on actual needs, such as different fan speed and temperature combinations, making it difficult to meet diverse usage requirements. In addition, the lack of effective power management and safety protection mechanisms when multiple hair dryers are used simultaneously poses safety hazards and energy waste. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a dual-channel hair dryer controller, which aims to improve the problems of low efficiency of single-channel control, limited human-computer interaction, and insufficient safety protection mechanisms.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dual-channel hair dryer controller, comprising a housing module and a power management module. The housing module contains a communication module, a main control unit, a drive module, an input module, and a display module. The main control unit is unidirectionally electrically connected to the input module, bidirectionally electrically connected to the drive module, bidirectionally electrically connected to the communication module, and unidirectionally electrically connected to the display module. The main control unit is also bidirectionally electrically connected to the voice control module.

[0006] The above technical solution uses a main control unit as the core, which is electrically connected to the input module, drive module, communication module, display module, and voice control module to form a multi-module collaborative control architecture, enabling local operation, voice interaction, and remote management of the dual-channel hair dryer.

[0007] Preferably, the voice control module includes a microphone array, a voice recognition chip, a noise reduction chip, a status indicator light, a power regulator chip, a communication interface circuit, and a buzzer. The voice control module is electrically connected to the power management module and the main control unit, respectively, and the voice control module is located inside the housing.

[0008] The above technical solution includes a voice control module comprising a dual-microphone array, a noise reduction chip, a voice recognition chip, a dual-color status indicator, a power supply regulator chip, an SPI communication interface, and a feedback buzzer. It communicates bidirectionally with the main control unit via a 3.3V regulated power supply. The dual-microphone array, in conjunction with the noise reduction chip, achieves noise suppression, supports command parsing, displays the working status using status indicator lights, and provides operational feedback using a buzzer. Overall, it achieves efficient recognition and execution feedback of voice commands.

[0009] Preferably, the main control unit uses a microcontroller chip, the power management module includes a power conversion chip, an overvoltage protection circuit, and an overcurrent protection chip, the input module includes a key switch group and a rotary potentiometer, the drive module includes a MOSFET power transistor, a relay module, a current sampling circuit, a temperature sensing circuit, and a PWM drive circuit, the communication module includes a wireless communication module and an antenna matching circuit, the display module uses an LCD screen, and the housing module includes a housing, a power interface, a hair dryer connection interface, and a knob / button opening. The housing module connects to an external power source to the power management module through the power interface. The microcontroller chip used in the main control unit is electrically connected to the key switch group, the rotary potentiometer, the PWM drive circuit, the relay module, the current sampling circuit, the temperature sensing circuit, the wireless communication module, and the LCD screen.

[0010] The above technical solution achieves the following: the main control unit connects to each module via a bus; the power management module includes a conversion chip, TVS diodes, and relays to achieve 220V to 12V / 5V power supply and overvoltage / overcurrent protection; the input module includes a rotary potentiometer and a button group; the drive module controls the MOSFET power transistors via TL494, and switches the heating wire mode with the help of relays, integrating current and temperature monitoring; the communication module integrates WIFI and Bluetooth, and optimizes the signal with antenna matching; the display module is a dot-matrix LCD screen; and the outer casing module integrates a power blower interface and a knob opening, achieving dual-channel independent control, multi-modal interaction, and safety protection.

[0011] Preferably, the overvoltage protection circuit includes a TVS diode connected in parallel to the output of the power conversion chip and a relay connected in series in the power supply circuit. When the voltage exceeds 240V, the TVS diode clamps the voltage to below 200V, and the relay simultaneously cuts off the power supply.

[0012] The above technical solution enables the TVS diode to respond and clamp the voltage to below 200V when the detected voltage exceeds 240V, while simultaneously triggering a relay to cut off the power supply circuit, thus achieving hardware-level dual protection and ensuring the safety of downstream circuit components.

[0013] Preferably, the PWM drive circuit uses a TL494 chip, whose input terminal is connected to the pin of the microcontroller chip, and whose output terminal is electrically connected to the gate of the MOSFET power transistor.

[0014] The above technical solution involves connecting the input terminal of the TL494 chip to the PWM output pin of the microcontroller chip to receive control signals, and connecting the output terminal to the gate of the MOSFET power transistor through a gate resistor to control the on / off state of the power transistor, thereby driving the hair dryer motor to achieve multi-level wind speed adjustment.

[0015] Preferably, the current sampling circuit includes a sampling resistor connected in series in the source circuit of the MOSFET power transistor, and its output terminal is electrically connected to a pin of the microcontroller chip; the temperature sensing circuit includes an NTC thermistor, and its output terminal is electrically connected to a pin of the microcontroller chip.

[0016] The above technical solution converts the current signal into a voltage signal using an operational amplifier LM358, and connects the output to the ADC pin of the microcontroller chip to achieve high-precision current monitoring. The temperature sensing circuit uses an NTC thermistor and a resistor voltage divider, and connects the output to the ADC pin of the microcontroller chip to detect the heating wire temperature in real time and trigger overheat protection when the temperature exceeds the limit.

[0017] Preferably, the input terminal of the power conversion chip is electrically connected to the power interface, and the output terminal is sequentially connected to a TVS diode, a relay, and an overcurrent protection chip, and supplies power to the main control unit, input module, drive module, communication module, and display module, respectively.

[0018] Through the above technical solution: the input end of the power conversion chip is electrically connected to the power interface to convert 220V AC power into DC power, and the output end is connected in sequence to TVS diode, relay and overcurrent protection chip to form a power supply link of voltage conversion-overvoltage protection-circuit cut-off-overcurrent monitoring, which provides stable power to the main control unit, input module, drive module, communication module and display module respectively.

[0019] Preferably, the wireless communication module includes WIFI and Bluetooth communication and is electrically connected to the main control unit.

[0020] The above technical solutions enable remote control via an app when connected to a router in WIFI mode, and establish a direct device connection in Bluetooth mode for low-power near-field operation. The built-in antenna matching circuit optimizes signal strength and ensures data transmission stability.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, a modular integrated architecture is used to integrate a communication module, a main control unit, a drive module, an input module, a display module, and a voice control module within the outer shell module, forming a complete control closed loop. This enables the controller to have dual-channel independent control efficiency, multi-modal operation convenience, and multi-level safety protection capabilities, thereby improving the control accuracy and reliability of the hair dryer in different scenarios.

[0023] 2. In this utility model, the layered design of the voice control module removes the interactive limitations of traditional physical buttons, and constructs an interactive closed loop from voice wake-up to command recognition to status feedback, providing users with a contactless, efficient and convenient operating experience, which is suitable for control needs in environments where both hands are occupied. Attached Figure Description

[0024] Figure 1 This is a schematic block diagram of a dual-channel hair dryer controller proposed in this utility model;

[0025] Figure 2 A block diagram of the voice control module of a dual-channel hair dryer controller proposed in this utility model;

[0026] Figure 3 This utility model provides a power management module block diagram for a dual-channel hair dryer controller.

[0027] Figure 4 This is a block diagram of the input module of a dual-channel hair dryer controller proposed in this utility model;

[0028] Figure 5 This is a block diagram of the drive module of a dual-channel hair dryer controller proposed in this utility model;

[0029] Figure 6 This is a block diagram of the communication module of a dual-channel hair dryer controller proposed in this utility model;

[0030] Figure 7 This is a block diagram of the housing module of a dual-channel hair dryer controller proposed in this utility model. Detailed Implementation

[0031] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] Reference Figure 1 , Figure 3 , Figure 4The present invention provides an embodiment of a dual-channel hair dryer controller, comprising a housing module and a power management module. The housing module is internally provided with a communication module, a main control unit, a drive module, an input module and a display module. The main control unit is unidirectionally electrically connected to the input module, bidirectionally electrically connected to the drive module, bidirectionally electrically connected to the communication module, and unidirectionally electrically connected to the display module. The main control unit is bidirectionally electrically connected to the voice control module.

[0033] Specifically, the internal components of the outer casing module include a communication module, a main control unit, a drive module, an input module, and a display module. The main control unit is electrically connected to the input module, bidirectionally electrically connected to the drive module, bidirectionally electrically connected to the communication module, and electrically connected to the display module. The drive module includes two independent power drive circuits, which can simultaneously adjust the wind speed and temperature parameters of the two hair dryers, achieving independent control of both channels. The communication module supports multiple wireless communication protocols such as WIFI and Bluetooth, establishing a local and remote dual control link. The power management module integrates overvoltage, overcurrent, and overheat protection circuits, forming a three-level safety protection mechanism. The voice control module is equipped with a noise-canceling microphone array and a voice recognition chip. The display module uses an LCD screen to display the working status parameters in real time. Through modular collaborative design, efficient independent control of the two hair dryers, multimodal human-machine interaction, and comprehensive safety protection are achieved, improving ease of use and equipment reliability.

[0034] Reference Figure 2 The voice control module includes a microphone array, a voice recognition chip, a noise reduction chip, a status indicator, a power regulator chip, a communication interface circuit, and a buzzer. The voice control module is electrically connected to the power management module and the main control unit, and the voice control module is located inside the casing.

[0035] Specifically, the voice control module is electrically connected to both the power management module and the main control unit, and is located inside the casing. A microphone array, in conjunction with a noise reduction chip, filters ambient noise in real time, effectively reducing interference from the hairdryer's operation. This allows the voice recognition chip to accurately interpret preset wake-up commands. Status indicator lights provide intuitive feedback on the module's operating status through different colors and flashing frequencies. A buzzer emits a prompt tone when commands are received and executed, creating a multi-dimensional interactive feedback mechanism involving sound, light, and electricity. A power regulator chip provides a stable 3.3V power supply to the module, ensuring low-noise operation of the microphone array and chipset. The communication interface circuit enables bidirectional data transmission with the main control unit, supporting the rapid conversion of voice commands into control signals such as fan speed adjustment and operating mode switching, and the transmission of module status information.

[0036] Reference Figures 5-7The main control unit uses a microcontroller chip. The power management module includes a power conversion chip, an overvoltage protection circuit, and an overcurrent protection chip. The input module includes a push-button switch group and a rotary potentiometer. The drive module includes a MOSFET power transistor, a relay module, a current sampling circuit, a temperature sensing circuit, and a PWM drive circuit. The communication module includes a wireless communication module and an antenna matching circuit. The display module uses an LCD screen. The housing module includes a housing, a power interface, a hair dryer connection interface, and a knob / button opening. The housing module connects to an external power supply to the power management module through the power interface. The microcontroller chip used in the main control unit is electrically connected to the push-button switch group, rotary potentiometer, PWM drive circuit, relay module, current sampling circuit, temperature sensing circuit, wireless communication module, and LCD screen. The overvoltage protection circuit includes a TVS diode connected in parallel to the output of the power conversion chip and a series... The relay connected to the power supply circuit, when detecting a voltage exceeding 240V, uses a TVS diode to clamp the voltage below 200V, and the relay synchronously cuts off the power supply. The PWM drive circuit uses a TL494 chip, whose input is connected to the pin of the microcontroller chip, and its output is electrically connected to the gate of the MOSFET power transistor. The current sampling circuit includes a sampling resistor connected in series in the source circuit of the MOSFET power transistor, and its output is electrically connected to the pin of the microcontroller chip. The temperature sensing circuit includes an NTC thermistor, and its output is electrically connected to the pin of the microcontroller chip. The input of the power conversion chip is electrically connected to the power interface, and its output is sequentially connected to the TVS diode, the relay, and the overcurrent protection chip, supplying power to the main control unit, input module, drive module, communication module, and display module, respectively. The wireless communication module includes WIFI and Bluetooth communication and is electrically connected to the main control unit.

[0037] Specifically, the main control unit uses a microcontroller chip, integrating a 12-bit ADC and PWM output channel, and achieves multi-module collaborative control via a bus; the power management module's power conversion chip converts 220V AC power into stable DC power; the TVS diode in the overvoltage protection circuit responds quickly when the voltage exceeds 240V, cutting off the power supply in conjunction with a relay; the overcurrent protection chip monitors the current in real time, triggering current limiting protection when the detected current exceeds 5A; the input module's rotary potentiometer uses a multi-turn precision type to achieve continuous adjustment of the fan speed; the button switch group includes function buttons for mode switching, temperature lock, etc.; the drive module's PWM drive circuit uses a TL494 chip to generate a 20kHz PWM signal, controlling... The MOSFET power transistor controls the conduction state to achieve stepless adjustment of the hair dryer's airflow speed; the relay module switches between half-wave and full-wave operating modes of the heating element; the sampling resistor in the current sampling circuit converts the current signal into a voltage signal, which is then amplified by an operational amplifier and input to the microcontroller for high-precision current monitoring; the NTC thermistor in the temperature sensing circuit detects the heating element temperature in real time, triggering overheat protection when the temperature exceeds 120 degrees Celsius; the wireless communication module in the communication module supports dual-mode communication via Wi-Fi and Bluetooth, and the antenna matching circuit optimizes signal transmission, enabling remote control via a mobile app; the dot-matrix LCD display in the display module shows parameters such as airflow speed, temperature, and operating mode in real time, improving user experience and equipment reliability.

[0038] Working Principle: The outer casing module serves as the physical carrier, internally integrating a communication module, main control unit, drive module, input module, display module, and voice control module, forming a complete control closed loop. The power management module converts external power into a stable voltage and uses a TVS diode and relay in the overvoltage protection circuit to prevent voltage fluctuations from damaging components. The microcontroller chip in the main control unit serves as the core, receiving user operation commands through the input module. After processing, the PWM drive circuit in the drive module adjusts the conduction state of the MOSFET power transistor to achieve precise control of the hair dryer's fan speed. Simultaneously, the current sampling circuit monitors the load current in real time, triggering overcurrent protection when it exceeds 5A. The NTC thermistor in the temperature sensing circuit monitors the heating wire temperature, automatically cutting off power when the temperature exceeds the limit. The communication module supports WIFI and Bluetooth connections, allowing the controller to remotely receive commands and receive feedback on operating status, such as fan speed, temperature, and fault codes, via a mobile APP. The LCD screen of the display module synchronously displays real-time parameters, forming a dual control mode of local and remote operation.

[0039] The voice control module collects user commands through a microphone array, which are then processed by a noise reduction chip and converted into control signals by a voice recognition chip. This enables wake-up word response and recognition of preset commands. Status indicator lights and a buzzer provide real-time feedback on command execution status, creating an integrated audio-visual interactive experience. A power supply regulator chip ensures stable power supply to the voice module, and the communication interface circuit enables bidirectional data transmission with the main control unit, such as volume adjustment and mode switching commands.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dual-channel hair dryer controller, comprising a housing module and a power management module, characterized in that: The outer casing module contains a communication module, a main control unit, a drive module, an input module, and a display module. The main control unit is unidirectionally electrically connected to the input module, bidirectionally electrically connected to the drive module, bidirectionally electrically connected to the communication module, and unidirectionally electrically connected to the display module. The main control unit is also bidirectionally electrically connected to the voice control module.

2. The dual-channel hair dryer controller according to claim 1, characterized in that: The voice control module includes a microphone array, a voice recognition chip, a noise reduction chip, a status indicator light, a power regulator chip, a communication interface circuit, and a buzzer. The voice control module is electrically connected to the power management module and the main control unit, and is located inside the housing.

3. A dual-channel hair dryer controller according to claim 1, characterized in that: The main control unit uses a microcontroller chip. The power management module includes a power conversion chip, an overvoltage protection circuit, and an overcurrent protection chip. The input module includes a set of push-button switches and a rotary potentiometer. The drive module includes a MOSFET power transistor, a relay module, a current sampling circuit, a temperature sensing circuit, and a PWM drive circuit. The communication module includes a wireless communication module and an antenna matching circuit. The display module uses an LCD screen. The housing module includes a housing, a power interface, a hair dryer connection interface, and a knob / button opening. The housing module connects to an external power source to the power management module through the power interface. The microcontroller chip used in the main control unit is electrically connected to the push-button switch set, the rotary potentiometer, the PWM drive circuit, the relay module, the current sampling circuit, the temperature sensing circuit, the wireless communication module, and the LCD screen.

4. A dual-channel hair dryer controller according to claim 3, characterized in that: The overvoltage protection circuit includes a TVS diode connected in parallel to the output of the power conversion chip and a relay connected in series in the power supply circuit. When the voltage exceeds 240V, the TVS diode clamps the voltage to below 200V, and the relay simultaneously cuts off the power supply.

5. A dual-channel hair dryer controller according to claim 3, characterized in that: The PWM drive circuit uses a TL494 chip, whose input terminal is connected to the pins of the microcontroller chip, and whose output terminal is electrically connected to the gate of the MOSFET power transistor.

6. A dual-channel hair dryer controller according to claim 3, characterized in that: The current sampling circuit includes a sampling resistor connected in series in the source circuit of the MOSFET power transistor, and its output terminal is electrically connected to a pin of the microcontroller chip. The temperature sensing circuit includes an NTC thermistor, and its output terminal is electrically connected to a pin of the microcontroller chip.

7. A dual-channel hair dryer controller according to claim 3, characterized in that: The input terminal of the power conversion chip is electrically connected to the power interface, and the output terminal is sequentially connected to a TVS diode, a relay, and an overcurrent protection chip, which respectively supply power to the main control unit, the input module, the drive module, the communication module, and the display module.

8. A dual-channel hair dryer controller according to claim 3, characterized in that: The wireless communication module includes WIFI and Bluetooth communication and is electrically connected to the main control unit.

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