The portable juice cup's industrial control circuit board uses integrated electronic control technology to achieve multi-speed adjustment functions to meet users' processing needs for different ingredients.
Juice cups usually use single-phase series-excited AC motors as power sources, and their speed is directly related to the supply voltage. The industrial control circuit board uses a speed control switch to achieve voltage grading control, such as setting three speeds: high, medium, and low. The high speed gear is directly powered by full voltage (such as 220V), the medium speed gear is powered by half-wave rectification through a rectifier diode (the voltage drops to about 110V), and the low speed gear is further limited and reduced. This design uses voltage changes to adjust the motor speed, taking into account both cost and efficiency.
Some high-end juice cups use brushless DC motors (BLDC), and their industrial control circuit boards have built-in Hall sensors to achieve electronic commutation by detecting the rotor position. The system dynamically adjusts the phase sequence of the stator winding according to the Hall signal, and adjusts the voltage duty cycle with PWM (pulse width modulation) technology to accurately control the motor speed. For example, the high speed gear corresponds to a 100% duty cycle, while the low speed gear is reduced to 50%, achieving a smooth transition of stepless speed regulation.
The core of the industrial control circuit board is the power MOS tube drive circuit, which adjusts the motor input power by controlling the on and off time of the MOS tube. For example, the 100N03 low-voltage MOS tube of Feihong Electronics is used, and its low internal resistance characteristics can reduce energy consumption and improve speed regulation efficiency. The system outputs PWM signals through the MCU (microcontroller), which are amplified by the driver chip to control the MOS tube to achieve dynamic adjustment of the speed.
The industrial control circuit board integrates a key matrix and an LED display. The user selects the gear position through the key, and the display screen provides real-time feedback on the current speed or working status. For example, after pressing the "high speed" key, the MCU reads the key signal, updates the display content through the I²C bus, and adjusts the PWM parameters to achieve speed regulation. This design improves the user experience and ensures intuitive and convenient operation.
To prevent the motor from overheating or overloading, the industrial control circuit board has a built-in temperature limiter (such as 103℃/115℃ dual threshold) and a fuse. When the motor temperature or current exceeds the threshold, the temperature limiter disconnects the power supply and the fuse blows to protect the circuit. For example, the Xinda SC1 juicer automatically shuts down when the temperature exceeds 115°C and resumes working after cooling to ensure the safety of the equipment.
In response to portable needs, the industrial control circuit board uses low-power MCU (such as STM32F103C8T6) and intelligent power management. For example, in standby mode, the MCU enters a dormant state and the current drops to 0.23μA; in working mode, dynamic voltage regulation (DVS) is used to optimize energy consumption. In addition, some circuit boards integrate Bluetooth modules to support remote control on mobile phones, further reducing the power consumption of physical buttons.
To adapt to different types of juice cups, the portable juice cup industrial control circuit board adopts a modular design. For example, the CDE-20 type uses a permanent magnet synchronous motor, and the circuit board integrates a dedicated driver chip; the Yufeng JQE3A type uses a power switch with an indicator light to display the status. This design facilitates functional expansion, such as adding three new modes of juicing, heating, and keeping warm, and realizing multi-scenario applications through relay switching circuits.
The portable juice cup industrial control circuit board realizes multi-speed adjustment function through the collaborative innovation of hardware and software. From the voltage grading control of the single-phase series-excited motor, to the electronic commutation technology of the brushless DC motor, to the energy efficiency optimization of the MOS tube drive circuit, every link reflects the exquisiteness of industrial design. In the future, with the integration of Internet of Things technology, industrial control circuit boards will further develop in the direction of intelligence and miniaturization, bringing more possibilities to portable juice cups.
