Design of Intelligent Low-power Micro Vibration Gating System

An intelligent door control system using knock frequency as password is proposed to overcome the shortcomings of traditional electronic lock, such as low security factor and complex operation. The main control uses a low power STM32 chip, which integrates the vibration sensor, EEPROM, OLED display module and Bluetooth module. The system can be used to detect whether a user knocks, collect the number of times a user knocks, and the time interval between each knock. It can be used to control whether a door is opened by collecting a set password for real-time comparison. The system can not only modify the password in the display interface, but also control the door control system through Bluetooth connected to the mobile device. Tests show that the system can realize the gated function efficiently and conveniently, and has broad market application prospects.