chrispeng [ad_1]
First, briefly explain what RFID is. RFID is the abbreviation of English Radio Frequency IDentification, translated into Chinese, everyone is familiar with it, which is radio frequency identification. This is a wireless communication technology that can identify a specific target through radio signals, and then read and write its related data, but does not need to establish mechanical or optical contact between the identification system and the specific target. At this point, everyone should be curious. What is the use? Naturally, there are many uses. Let’s talk about the application of RFID in smart parking lot management.
RFID in smart parking lot management application
Two mainstream technologies
At present, a mainstream technology of RFID in the parking lot smart management system is to use inductive IC card and image recognition as the management method, and at the same time have infrared remote sensing to control the door switch, and the functions of anti-theft alarm and reversing limit. This system was developed with the rise of new identification technologies such as IC cards, short-range RF radio frequency identification cards, and long-range radio frequency identification. It overcomes the shortcomings of magnetic card and barcode technology, has the characteristics of long life, easy to use, not easy to damage, high confidentiality, etc., which makes the intelligent management of parking lots reach a new level.
Inductive IC card plus image recognition management technology, supports both long-distance and short-distance readers, supports permanent card and temporary card working methods, has functions such as automatic identification, record storage, etc., which can prevent the loss of funds. Because this technology is used in conjunction with IC card and graphic comparison to achieve the purpose of anti-theft car.
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, has high confidentiality and cannot be forged, eliminates the need to swipe the card, and improves the identification speed. Since this technology does not have movable mechanical devices in the identification system, the jam phenomenon is eliminated and the reliability of the system is improved.
For toll parking lots, the reliability of the identification system means the reliability of the parking lot. Therefore, the read-only RF non-contact identification card has become 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 backscatter card and surface acoustic wave card; according to the identification range, it can be divided into short-distance RF (radio frequency) card and long-distance RF (radio frequency) card.
The short-distance RF card uses backscatter technology, and the identification range is generally 0.3 m to 0.6 m. Due to the short recognition distance, the cardholder is required to present the recognition card in front of the card reading device. The long-distance RF card adopts advanced surface acoustic wave technology, which expands the identification range of the card, increases the identification speed, and can maximize the advantages of non-contact identification technology. The vehicle card can be identified in a considerable range.
In addition, due to the use of high-speed identification technology, it can be identified even when passing through the card reader at high speed. Years of operating records show that its effective identification 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, and realizes the intelligent and scientific management of the building and property community parking lot, which can control cost loss, improve operation efficiency, and ensure Vehicle safety.
Management Mode
The smart parking lot management system adopts the management mode of “one car, one card, one card”, that is, from the time the vehicle enters the parking lot to the time the vehicle leaves the parking lot, all the information related to this vehicle is uniquely related to the ID number of the card. Through this unique ID number, we can combine information such as user, vehicle model, vehicle license plate, vehicle color and other information and vehicle image, vehicle entry and exit time, parking duration, designated parking space number, parking path, and fee payable. They are unified in the database for easy query and storage.
In this way, the data information of toll management, parking guidance, vehicle identification, and safety monitoring subsystems are built on the same data platform, thereby effectively integrating the various subsystems into a unified intelligent parking lot management system.
The intelligent parking lot management system is a computer network composed of a management system and a channel identification system, and the network communication protocol adopts the TCP/IP protocol. The system can effectively, accurately and intelligently identify, collect, record and park on-demand data and information of system vehicles (vehicles with electronic license plates) and non-system vehicles (vehicles without electronic license plates) entering and leaving the parking lot. Upload and process, and when necessary, can be supplemented by corresponding manual intervention to avoid the impact of abnormal events (non-system car in and out), and to ensure that the system has efficient intelligent vehicle release capabilities.
For the smart parking system, the sensitivity should be high, the adaptability of use is large, the installation is not too complicated, and it should not be affected by day and night, which can ensure stable and reliable monitoring of vehicles in any environment. Engineering applications Convenient, maintenance-free, and cost should not be high.
The radio frequency identification equipment must be able to communicate with the electronic car card when the car passes at normal speed; the time, space information, car card information of the vehicle, and the data processing center download instructions must be stored locally; the system should regularly self-check and malfunction Self-check, upload equipment working status in time for processing by the system operation center; after troubleshooting or power supply restoration, the system will automatically restart to ensure normal parking lot work and complete data transmission; modularized software structure; able to meet traffic control equipment and monitoring Interface requirements for equipment (such as barriers, signal lights, electronic scales, image capture, etc.).
The operation process of the parking lot management system is based on the process of customers parking and picking up the car. The working process of the parking lot is always centered on the process of the user’s vehicle entering and leaving the parking lot. Parking lot users are generally divided into two categories: temporary users and fixed users. When a vehicle enters/leaves the parking lot antenna communication area, the antenna uses microwave communication to exchange two-way data with the vehicle radio frequency card, read the relevant information of the vehicle from the radio frequency card, automatically identify the radio frequency card, and determine whether the car card is Effective and legal, the lane control computer displays the license plate number corresponding to the radio frequency card, and the driver and other data information; the lane control computer automatically stores the passage time, vehicle and driver information in the database, and 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. The radio frequency card is selected as the management medium of the smart parking lot. Through demand analysis, the functions required of the smart parking lot management system are clarified, and then the structure design drawing of the smart parking lot management system is proposed.
Aiming at the user groups of the parking lot, the work flow of entering and exiting the parking lot for temporary users and fixed users was analyzed and designed separately, so that the fixed users can enter and exit the parking lot without stopping.
With the advancement of science and technology and the development of human civilization, the application of smart parking lot management systems in residential communities, large commercial buildings, and work units is becoming more and more common. However, people’s requirements for parking lot management and intelligence are getting higher and higher, and there is an urgent need for better, automated, convenient and fast 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, etc., which cannot guarantee the income of investors and the safety of parking vehicles, which severely restricts the business of parking lots. develop.
The RFID smart system not only improves work efficiency, saves manpower and material resources, reduces operating costs, prevents employees from charging for personal gains and fraud, and the entire management system is safer and more reliable. Including driver identification, vehicle image comparison, parking space automatic guidance, vehicle entry and exit conditions, parking space tracking records and charging management, query and print vehicle information at any time.
[ad_2]
