Scheme of general parking lot management system based on RFID technology
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With the development of science and technology and the improvement of people’s living standards, the number of social vehicles is constantly increasing, road congestion is getting more and more serious, vehicle parking is becoming more and more difficult, communities, agencies, enterprises and institutions, and social parking lots are full of vehicles. . In particular, in order to ensure internal safety, government agencies, enterprises and institutions have become more urgent to regulate all types of vehicles entering and exiting. It is necessary to ensure the rapid entry and exit of vehicles of their own units, and at the same time, they can also take into account the management of foreign vehicles. These tasks are difficult to do by manpower alone, and modern technology must be used to manage vehicles. This article takes Nanjing customs agency vehicle management system as an example, and focuses on how to apply RFID technology to a general solution for parking lot management.
There are many cases where RFID technology is applied to parking lot management. Most of them are for standard charging parking lot management and vehicle traffic management. They are relatively standardized and simple. However, general parking lots such as government agencies, enterprises, institutions, and residential communities have complex import and export terrains, and entry and exit. Vehicles are complex, so the management of vehicle traffic is relatively complicated.
Standard fee parking lot management
The vehicle entrance and exit passages of the standard toll parking lot are separated and managed. The width of the passage is generally within 3.5 meters. When a temporary vehicle enters the parking lot, first stop and take the IC card. The system counts the time of entry of the vehicle, and at the same time captures a picture of the vehicle license plate, the blocking lever is raised, and the vehicle enters the parking lot to park. When the vehicle leaves the parking lot, the toll collector manually takes back the IC card, and the system determines the parking fee according to the parking time. At the same time, the license plate photo taken when entering the parking lot is compared with the current vehicle license plate picture to ensure that the vehicle license plate is consistent and prevent midway switching. Finally, the parking fee is charged, the blocking lever is raised, and the vehicle leaves.
General parking lot management
Government agencies, enterprises, institutions, residential communities and other general parking spaces have access to the most common parking spaces. Due to the tight parking spaces, it is necessary to implement pass management for fixed vehicles. The pass is referred to as “electronic license plate”. It is composed of non-contact, RFID tags, generally ceramic material tags, fixed on the front windshield of the vehicle, or metal electronic tags fixed on the edge of the front license plate of the vehicle. The tags are generally not removable to ensure that one vehicle corresponds to one card. When the vehicle enters and exits Without parking, the system will automatically read the electronic license plate and shoot the image of the vehicle license plate. The background system compares the registration information of the vehicle electronic license plate. If the read information is consistent with the background registration information, and the pass period is valid, the gear lever will be automatically raised without the need Manual operation. For vehicles that enter and exit temporarily, they can be managed automatically, semi-automatically or manually through IC cards.
Nanjing Customs Vehicle Parking Management
The office area of the Nanjing Customs Agency is located in a prosperous urban area. The parking lot is tight. There are nearly 400 office vehicles and private vehicles, and they are still increasing. The existing parking lot has been overwhelmed, making it more and more difficult to manage vehicles entering and leaving the agency. Bigger. For this reason, the leaders of Nanjing Customs paid great attention and decided to introduce RFID technology to automate the management of public and private vehicles entering and leaving the agency.
The office area of Nanjing customs agency is the most common, mixed, and complex parking area. Its underground garage is a standard parking lot. The entrance and exit are separated and will not interfere with each other. Only small vehicles can enter and exit. However, the two entrance and exit gates of the parking lot are very complicated:
The width of the gate can reach 6-8m. Because there are often more than 10 meters long buses entering and exiting, it is impossible to physically isolate the entry and exit channels, resulting in vehicles entering and exiting at the same time, and the position of vehicles entering and exiting is very arbitrary;
The two entrance and exit gates are in a T-shape with the road outside the gate. The electric barrier is only 2 to 3 meters away from the social road outside the gate. The road inside the gate is also distributed in a T-shape. Vehicles can go straight or immediately make a 90o right turn. , Passing by the entrance of the underground parking lot;
Due to the complexity of internal and external roads, it is easy for vehicles to be stuck within the range of the RFID antenna for a long time.
In response to the complexity of the above road conditions, Nanjing Sanbao Technology Co., Ltd. has developed a set of universal parking
Field vehicle management system, the characteristics of this system are:
It has versatility and practicability, and is suitable for the vehicle management of social standard parking lots, communities, enterprises and institutions;
For different vehicles, use different forms of RFID tags;
Long-distance RFID is compatible with IC technology;
The LED induction screen is combined with the SMS method to dynamically guide the vehicle.
Nanjing Customs Vehicle Parking Management System Structure
The entire system consists of a server, responsible for the management of the database in the entire system, installed with Windows 2000 Server Chinese version and MS SQL Server 2000 Chinese version; card issuing computer, installed with card issuing management software for system card issuing management; query management computer, Installed with query statistics software, used to query statistics; underground garage management computer, install access control software to control the passage of vehicles entering the underground garage; north gate control system, install access control software to control the management of vehicles passing through the north gate; east gate Control system, install traffic control software, control the vehicle management through Dongdaemun. See Figure 2.
Software system
The Nanjing Customs vehicle parking management system includes: card issuance management subsystem, query statistics management subsystem, underground parking lot management subsystem, surface parking lot management subsystem. See Figure 3.
Card issuance management subsystem: realize the management of electronic license plate’s issuance, elimination, and annual review.
Query statistics management subsystem: query the traffic records of vehicles entering and exiting the underground garage, the ground north gate and the east gate, statistics vehicle traffic data, and real-time query vehicle location (in the parking lot or outside).
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