In today’s era of efficient and personalized skincare, traditional beauty devices are facing a critical turning point towards smart upgrades. In the age of intelligence, users are less attracted to single-function button-operated beauty devices and instead expect smarter, more convenient, and data management-driven skincare experience devices. Many beauty devices on the current market suffer from pain points such as high prices, bulky machines, complex operations, lack of personalized adaptation, and inability to quantify skincare effects. At the same time, users’ demands for device portability and intelligent interaction are also increasing. These needs and challenges provide an excellent scenario for the application of Low Energy Bluetooth (BLE) technology, which, with its ultra-low power consumption, stable connection, and high compatibility, has become the ideal communication solution for smart beauty devices.
Solution Design
In terms of hardware design, the smart beauty device adopts a modular architecture, using the STM32 series as the main control chip, and the power management module employs a low-power DC-DC converter powered by a lithium battery. The functional execution unit includes microcurrent stimulation, RF energy output, LED light therapy, and ultrasound, vibration massage, etc., while integrating a sensing detection unit that monitors the skin surface temperature in real-time through a high-precision temperature sensor, assesses skin hydration status with a humidity sensor, analyzes skin pH balance with a micro pH sensor, and detects ambient light intensity with a photodiode array to automatically adjust light therapy parameters, combined with a current detection circuit to ensure the accuracy and safety of microcurrent output. The Bluetooth BLE module RC6626A communicates with the MCU via serial transparent transmission, achieving bidirectional data interaction between the device and the mobile APP.
On the software side, a complete BLE communication protocol stack is built, implementing device control and data collection through custom GATT services. The mobile APP can dynamically adjust care parameters and receive real-time status feedback. The system supports OTA wireless upgrade functionality, facilitating the addition of new features and optimization algorithms in the future. All functional modules are uniformly scheduled by the MCU, combined with sensor feedback data to achieve precise control, ensuring safety and effectiveness under different care modes, providing users with an intelligent and personalized beauty experience.
Advantages of the Solution
Compared to traditional beauty devices, the Low Energy Bluetooth (BLE) solution has significant advantages in user experience and functional expansion. Traditional devices are limited by the physical button operation mode, where users can only switch preset levels mechanically, making it impossible to precisely adjust parameters or record care data, with skincare effects relying solely on subjective feelings. In contrast, the BLE smart solution breaks down the interaction barriers between people, devices, and mobile terminals through wireless connections, allowing users to adjust microcurrent intensity with a precision of 0.1% on the APP, dynamically calibrate RF energy output based on real-time temperature feedback, and automatically match the best wavelength for the light therapy module based on skin tone data analyzed by the mobile camera or third-party magic mirrors. When sensors detect that the skin is abnormally dry or the pH value is unbalanced, the system can immediately pause output and push care suggestions, elevating the safety level of beauty to medical-grade standards.
Smart Bluetooth Module
In the BLE solution for smart beauty devices, the RC6626A BLE module from Zhihan IoT demonstrates excellent usability and adaptability. With over 10 years of experience in low-power Bluetooth development, Zhihan has created the RC6626A Bluetooth module with stability and reliability as key standards, featuring an ultra-low standby power consumption of 1.2uA, stable connection, high-speed transparent transmission, a rich AT command set, and OTA upgrade capability, ensuring continuous support for product functionality. Zhihan can provide not only standard transparent transmission modules but also customize Bluetooth protocol stack optimization solutions for clients, offering full-chain services from circuit design, Bluetooth software, to APP development, ensuring that the beauty device maintains a stable and reliable Bluetooth connection while precisely controlling microcurrent and transmitting biosensor data in real-time, while keeping the overall standby power consumption at an industry-leading level.
Now, smart beauty devices are rapidly developing towards a “data-driven skincare“ direction. Users hope that devices can not only provide basic care functions but also act like personal beauty consultants, recommending the best solutions based on changes in skin type. At the same time, the rise of social skincare has also created a demand for data sharing between devices, as users desire to showcase their care results on social platforms, forming an interactive skincare community. Therefore, the BLE-based beauty device solution addresses the existing pain points of traditional devices and provides differentiated competitive advantages for products, opening up new markets for high-end, intelligent beauty devices.
