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1. System introduction
The RFID intelligent parking lot management system is developed for the parking lot to realize the wireless identification of vehicles, automatic charging without parking, and intelligent management. Due to the rapid increase in vehicles used by enterprises and individuals in recent years, it is urgent to adopt modern methods to implement efficient and intelligent management of various parking lots in urban areas to meet the needs of parking lots to adapt to fast-paced vehicle entry and exit. The RFID intelligent parking lot management system met this need in time and became one of the most popular parking lot management systems.
2. Principles of RFID (Radio Frequency Identification) Technology
Radio frequency identification (RFID) technology is the most advanced fourth-generation automatic identification technology in the world. It has just begun to emerge in recent years and has been quickly promoted and applied as a new technology. It has long identification distance, high identification accuracy and fast identification speed. , Strong anti-interference ability, long service life, can penetrate non-metallic materials, etc., and have a wide range of applications. The intelligent parking lot management system effectively prevents the damage and interference caused by human factors to the parking lot management through the long-distance passive radio frequency identification technology, and realizes the intelligent and scientific management of the parking lot of the building and the property community, which can control the loss of expenses and improve the operation efficiency. , To ensure vehicle safety.
The vehicle users of parking lot management are divided into two categories: (1) Fixed users: they are frequent customers of the parking lot and have to enter and exit the managed parking lot many times every day; (2) Temporary users: refer to the managed parking lot only occasionally FIT in the parking lot once.
For fixed users, the existing parking lot management system uses monthly pass cards to reduce the registration and inspection procedures when they enter and exit the parking lot. However, most of the monthly pass cards currently use short-distance cards. When entering and leaving the parking lot, the driver must also open the glass window, stretch the pass card to the card reader and shake it a few times to raise the barrier to allow vehicles to enter.
If you use a long-distance monthly pass card, you only need to stick the monthly pass card on the windshield of the car. Every time the vehicle arrives at the gate of the parking lot, the remote card reader will judge whether the controllable lever is raised, so the fixed user vehicle does not need to stop. , Long drive straight into. This greatly improves the traffic efficiency of vehicles and reduces pollution; at the same time, it avoids all kinds of inconveniences caused by bad weather such as wind and rain.
Three, adopt equipment
The equipment used is a UHF reader, and the core equipment includes a 915MHz wireless reader and passive automotive windshield electronic tags.
The main performance of the equipment is as follows:
The system consists of readers, electronic tags and supporting integrated accessories
Adopt 915MHz high frequency radio frequency, suitable for all-weather and harsh environment applications
Passive automotive windshield electronic tags
Non-contact reading distance: less than 4 meters
The maximum transmit power of the reader is 2w, and the minimum is 200mw
Comply with the safety standards of the United States FCC
Schematic diagram of wireless identification work and installation
4. Schematic diagram of RFID smart parking lot management system
Brief description of the system scheme:
1. This system has two sets of readers, one set at the entrance and one set at the exit;
2. The reader and tag used in this system are automatic wireless identification equipment. The reader has a strong control function. According to the set parameters, it can automatically control the action of the lever after reading the registered tag ID. This system can switch the automatic control mode to manual control mode under special circumstances, and realize manual control and operation of the railing machine;
3. The computer system software in this system can fully meet the requirements for data recording, storage, management, and printing; when the computer fails, the reader can continue to work and can save hundreds of vehicle entry and exit information;
4. In the schematic diagram, it is proposed to use the ground-sensing coil detector to control the falling of the railing, to prevent the railing from falling and damaging the vehicle when the vehicle suddenly fails when passing the railing. The user can make a choice according to the needs.
Five, schematic diagram of management software
The system can rewrite the software according to the user’s special requirements for management.
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