RFID parking lot intelligent management plan
Overview With the socio-economic prosperity and the continuous improvement of people's living standards, transportation has gradually become an indispensable necessity in daily life. In recent years, the rapid growth of various types of vehicles, especially private cars, has become an important indicator of the improvement of economic levels. At the same time, the construction of transportation infrastructure and vehicle safety management are increasingly important issues facing urban construction planners. The design of this solution is based on the mature development and successful application of RFID (radio frequency identification), an industry that is currently popular in the world and is increasingly valued in China. Its imitation, anti-interference, impact resistance, rapid identification, and intelligent identification will undoubtedly provide a new solution for all kinds of parking management.
1. Project Features
The biggest feature of the project is the combination of mature smart card technology, wireless communication technology, and advanced software technology, and organically integrate various mature technologies for practical engineering needs.
At the management station, use a contactless smart ID card to automatically identify and manage incoming and outgoing vehicles. Smart card management is the foundation and direction of information management of various management systems;
In the user, the non-contact rapid identification of the vehicle and the automatic identification of the user's identity are compared to ensure the safety and protection of personal property and the simplicity and speed of the normal access procedures.
The information source of each branch management station and the processing terminal of the central management system are combined through a wireless bridge or an internal network.
2. System function description
The device is divided into two parts:
One part is the microwave signal identification device, that is, the entrance and exit communicator, which can be installed above the entrance and exit of the control vehicle. The other part is the electronic label. The system provides each parking user with a registered electronic label, which can be installed in a proper position in the front windshield of the vehicle. The module has an identification code inside.
When the vehicle reaches the entrance of the community 6-8 meters, the vehicle detector detects the presence of the vehicle, activates the entrance communicator, detects the identity code (ID) in the electronic tag of the coming vehicle, and the ID is loaded in the form of microwave and transmitted to Communicator, the ID database in the owner's electronic tag is preset in the information database that comes with the communicator, indicating that the tag belongs to the parking lot, the brake is automatically opened quickly, and the vehicle can pass smoothly without stopping. The response time of the entire system Only 0.9 seconds.
2.1 System configuration
It consists of an electronic tag attached to the car body, a transceiver antenna at the entrance and exit of the garage, a tag reader, a camera controlled and activated by the reader, a background management platform and an internal communication network.
Equipment of central control room (computer, management software, etc.)
Entrance equipment (entry communicator, railing machine, vehicle detector, etc.)
Export equipment (basically the same as import equipment)
Electronic label (same as the number of registered vehicles) 
As shown above: the RFID antenna is controlled by the reader to continuously transmit radio waves to search. When the vehicle passes through the storage transceiver, the on-board transceiver is triggered to emit code information that can uniquely indicate the identity of the passing vehicle (such as license plate number, model type , Vehicle color, license plate color, bank account number, unit name and user name, etc.), and at the same time receive identification inspection, video storage information, after receiving and receiving signals from the transceiver of the warehouse management station, processed and transmitted to the computer system for data management Archive for future inquiry. Carry out information storage (into the warehouse) or information comparison (out of the warehouse), and after confirming, control the movement of the car barrier at the entrance and exit.
2.3 Functional description
RFID technology provides independent and uninterrupted system services for parking lot management and security, ensuring that only approved vehicles can pass. A digital management system for parking services and fee collection has been implemented.
Can achieve control of all vehicles in the venue;
Realize computer vehicle information management
In the case of unattended, the system automatically records the time of entering and leaving the vehicle and the license plate number
System parameter setting
Vehicle management for non-registered users
Always alert the problem vehicle;
Collect the information of the garage status and vehicle seat completely through the portable reader;
Speed ​​up the timely search and delivery of vehicles;
Strengthen the control and management of vehicles with overdue rental costs;
Provide a complete record of every moment of appearance.
3. Performance index
3.1 Indoor end (reading collector)
Working frequency 902-928MHz
Working mode fixed frequency or frequency hopping (software setting)
Power range + 25 ～ + 34dBm
The maximum working distance is up to 10m
Communication port RS-232: 1port9-pinDB-9Female
Communication rate up to 57600bps
Operating voltage DC + 5V current is less than 4 amps
Power adapter ACinput110 ～ 220V
Working temperature -30 ° ～ + 80 °
3.2 Car end (identification card)
Working frequency 902-928MHz
Working mode: Broad spectrum frequency hopping, fixed frequency mode
Card memory capacity EEPROM Total 1024Bits
Programmable memory capacity 928Bits
Card base material ceramic package
Read and write response time read 1.4ms write 30ms
Anti-interference performance anti-collision communication protocol; binary tree anti-collision mechanism. Number of reading cards ≥50 / s
Working temperature -40 ° ～ + 85 °
4. Engineering characteristics
The system has high automatic control function, strong anti-interference ability and high accuracy. During the implementation and installation process, the engineering volume is small, the damage resistance is strong, and it has practical characteristics such as wide resistance to high and low temperatures and strong resistance to oil pollution. The entire system is flexible.
For small single entry and exit management sites, it can be completed using the single Tao reading system;
For medium-sized management sites, multiple outlets can be connected through data transmission lines;
For large-scale management areas, through the means of dividing areas, adding readers at the entrances and exits of each area can realize unmanned automatic management of the whole area, and patrol statistics can also be carried out through handheld readers of security personnel;
For more safety considerations, the separation of the two cards of people and vehicles (especially for long-stay residents), the identification system can only take effect after the comparison and identification of the vehicle card and the master card match, and it will be a higher level in safety management.
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