First, briefly explain what RFID is. RFID is the abbreviation of English Radio Frequency IDentification. Everyone is familiar with it, which is RF identification. This is a wireless communication technology that uses radio signals to identify a specific target and then read and write its associated data without the need to identify mechanical or optical contact between the system and a particular target. Speaking of this, everyone should be curious, what is the use? The use is naturally a lot, let's talk about the application of RFID in smart parking management.
Application of RFID technology smart parking lot management system
RFID in smart parking management applications
Two mainstream technologies
At present, a mainstream technology of RFID in the parking lot intelligent management system is the use of inductive IC card and image recognition as a management means, and has infrared remote control door switch, and anti-theft alarm and reverse limit. This system was developed with the rise of new identification technologies, such as IC cards, close-range RF identification cards, and remote RF identification. It overcomes the shortcomings of magnetic card and bar code technology, and has the characteristics of long life, easy to use, not easy to damage, and high confidentiality, which makes the intelligent management of parking lot rise to a new height.
Inductive IC card plus image recognition management technology, support long-distance and close-range two kinds of readers, support permanent card and temporary card work mode, with automatic identification, record storage and other functions, can prevent the loss of funds. Because this technology is used in conjunction with the IC card for graphic comparison, it achieves the purpose of the anti-theft vehicle.
RFID technology and smart parking system: more secure and reliable
In addition, there is currently a mainstream technology in the industry: non-contact RF card identification technology. It inherits the advantages of IC card technology, high confidentiality, unforgeable, eliminating the process of card swipe and improving the recognition speed. Since the technology does not have an active mechanical device in the identification system, the stuck card phenomenon is eliminated, and the reliability of the system is improved.
For a toll parking lot, the reliability of the identification system means the reliability of the parking lot. Therefore, the read-only RF contactless identification card becomes an ideal identification technology in the parking lot management system. According to the manufacturing process of the identification card, the non-contact identification card can be divided into a backscatter card and a surface acoustic wave card; according to the identification range, it can be divided into a short-range RF (radio frequency) card and a long-range RF (radio frequency) card.
The short-range RF card uses backscattering technology, and the recognition range is generally from 0.3 meters to 0.6 meters. Since the identification distance is short, the cardholder is required to present the identification card before the card reading device. The long-distance RF card adopts advanced surface acoustic wave technology, which expands the recognition range of the card and improves the identification speed, which can maximize the advantages of the non-contact identification technology. The car card can be identified in a considerable range.
In addition, due to the high-speed identification technology, it can be recognized even at high speed through the card reading device. Years of operation records show that its effective recognition rate is close to 100%.
Through the above two technologies, the smart parking lot management system effectively prevents the damage and interference caused by human factors to the parking lot management, realizes the intelligent scientific management of the building and the property community parking lot, can control the loss of costs, improve the operational efficiency, and ensure Vehicle safety.
Application of RFID technology smart parking lot management system
Management mode
The smart parking lot management system adopts the management mode of “one car, one card and one card”, that is, from the vehicle entering the parking lot until the vehicle leaves the parking lot, all the information related to the car is uniquely related to the ID number of the card. With this unique ID number, we can information such as user, vehicle model, vehicle license plate, vehicle color and vehicle image, vehicle entry and exit time, parking duration, designated parking space number, parking route, payable fees, etc. Unify in the database for easy access and storage.
In this way, the charge management, parking guidance and vehicle identification, and the information of the safety monitoring subsystem are built on the same data platform, so that the subsystems can be effectively integrated into a unified intelligent parking lot management system.
The smart parking lot management system is a computer network composed of a management system and a channel identification system. The network communication protocol adopts the TCP/IP protocol. The system can effectively, accurately and intelligently identify, collect, record and park data on system vehicles (vehicles with electronic license plates) entering and leaving the parking lot and non-system vehicles (veans without electronic license plates). Upload, process, and, if necessary, supplement with appropriate manual intervention to avoid the effects of abnormal events (non-system car access) and ensure that the system has efficient vehicle smart release capabilities.
For the smart parking system, the sensitivity should be higher, the adaptability is greater, the installation is not too complicated, and it should not be affected by day and night. It can ensure stable and reliable monitoring of the vehicle under any environment. Convenient, maintenance-free, and cost should not be high.
The RFID device should be able to communicate with the electronic vehicle card when the normal speed of the vehicle passes. The time, space information, vehicle card information, and data processing center transmission instructions of the vehicle must be saved locally; the system should periodically self-test and malfunction. Self-test, timely upload the working status of the equipment for the system operation center; after troubleshooting or power restoration, the system automatically restarts to ensure that the parking lot works normally and the data transmission is complete; the software structure is modularized; it can meet the traffic control equipment and monitoring Interface requirements for equipment (such as gates, signal lights, electronic scales, image captures, etc.).
The operation process of the parking lot management system is based on the process of the customer parking and picking up the car. The workflow of the parking lot is always centered on the flow of the user's vehicles entering and leaving the parking lot. Parking users are generally divided into two categories: temporary users and fixed users. When the vehicle enters/exits the parking area of the parking lot antenna, the antenna exchanges information with the vehicle radio frequency card in a microwave communication manner, reads the relevant information of the vehicle from the radio frequency card, automatically identifies the radio frequency card, and determines whether the vehicle card is Effective and legal, the lane control computer displays the license plate number corresponding to the RF card, and the driver and other information; the lane control computer automatically stores the information about the time, vehicle and driver into the database, lane control The computer makes judgments based on unique information to make decisions about release or prohibition.
Compared with the traditional parking lot, the smart parking lot management system not only retains the functions of the traditional parking lot, but also relies on the original charging medium to improve the management medium, and selects the RF card as the management medium of the smart parking lot. Through the demand analysis, the functions of the smart parking lot management system are clarified, and then the structural design of the smart parking lot management system is proposed.
For the user groups of the parking lot, the temporary users and the fixed user's entry and exit workflows were analyzed and designed to realize the fixed users' non-stop access to the parking lot.
With the advancement of science and technology and the development of human civilization, the application of smart parking lot management system in residential communities, large commercial buildings and work units is becoming more and more popular. However, people have higher and higher requirements for the management of parking lots, and they are eager to have better, more automated, convenient and quick management methods.
Traditional parking lot management has various drawbacks such as high management cost, high labor intensity, low service efficiency, capital loss and serious vehicle theft. It can not protect the income of investors and the safety of parked vehicles, thus seriously restricting the parking lot business. development of.
The RFID smart system not only improves work efficiency, saves manpower and material resources, reduces operating costs, prevents employees from selling fraudulent charges, and the entire management system is more secure and reliable. Including driver identification, vehicle image comparison, automatic parking guidance, vehicle access, parking tracking and charging management, query and print vehicle information at any time.
