1. System Overview
This campus gate management system integrates hardware control and software intelligence, achieving efficient and secure access management through various technical means. The system uses the STM32F103C8T6 as the main control unit, the Raspberry Pi Zero as the visual processing core, along with components such as RFID modules, cameras, and servos, to create a complete intelligent gate control solution.
System Architecture Diagram
2. Hardware Design
1. Core Control Unit
The STM32F103C8T6 serves as the brain of the system, responsible for generating precise PWM signals to control servo actions, processing data from the RFID module, and communicating in real-time with the Raspberry Pi. Its high performance and low power consumption ensure stable operation of the system.
2. Visual Recognition Center
The Raspberry Pi Zero, equipped with a CSI camera, undertakes the visual recognition tasks of the system. It can capture vehicle images in real-time and confirm the legitimacy of passes through image processing algorithms, adding intelligent recognition capabilities to the system.
3. Perception and Execution Components
The RFID module is used for quick reading of user RFID card information, enabling contactless identity verification; the SG90 servo receives PWM signals to accurately control the opening and closing of the gate.
3. Software Design
The system is developed based on the RT-Thread real-time operating system, ensuring real-time task scheduling and stability. The software part includes multiple functional modules:
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PWM Control Module: Generates precise PWM signals to ensure smooth and reliable servo actions
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Visual Recognition Module: Utilizes advanced image processing technology to quickly and accurately identify vehicle information
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RFID Card Swiping Function: Developed an efficient RFID module interface and protocol for millisecond-level identity verification
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Backend Management System: Designed an intuitive and user-friendly management interface that supports user information management and temporary authorization functions
System Physical Display
4. Functional Highlights
✅Multiple Authentication Methods
The system supports dual authentication mechanisms of RFID card swiping and visual recognition, allowing users to quickly pass through by swiping cards or achieve seamless access through license plate recognition, greatly enhancing usability.
✅Real-time Monitoring Management
The mobile app management interface displays real-time access status and a list of vehicles allowed to enter the campus, enabling managers to monitor entry and exit conditions and promptly address any anomalies.
✅Flexible Permission Management
Supports temporary license plate number input, deletion of license plates, and other operations, facilitating visitor management and permission adjustments to meet the dynamic management needs of the campus.
✅Emergency Handling Mechanism
Includes an emergency gate opening function that allows for quick opening of the gate in special circumstances to ensure safety.
5. Technical Advantages
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Efficient and Stable: Based on the RT-Thread real-time operating system, the system responds promptly and operates reliably
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Intelligent Recognition: The combination of visual recognition and RFID technology ensures high accuracy and fast response
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Easy to Expand: Modular design makes it easy to expand system functions and add new features as needed
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Cost Optimization: Utilizes cost-effective hardware components while maintaining performance
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User-Friendly: A simple and intuitive interface reduces the learning curve for management personnel
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