Application of RFID Radio Frequency Identification Technology in Long-distance Parking Lot Management System
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I. Introduction
Conceptually, RFID is similar to barcode scanning. For barcode technology, it attaches the encoded barcode to the target, and uses a dedicated scanning reader to use photoelectric signals to transmit information from the barcode to the scanning reader. . In essence, RFID uses a dedicated RFID reader and a dedicated electronic tag that can be attached to the target, and uses radio frequency signals to transmit information from the electronic tag to the RFID reader. It can support both read-only working mode and read-write working mode, without contact or aiming, and can work freely in a variety of harsh environments. First, long-distance radio frequency products are not afraid of oil stains, dust pollution and other harsh and easily contaminated substances; Second, it can replace barcodes, such as being used in factory assembly lines to track objects, automatic toll collection, or vehicle identification.
2. Application cases and analysis
The card reading distance of traditional parking lot management system is relatively short, and you have to stop and swipe your card when entering and exiting the parking lot. Therefore, accidents occur in special locations such as underground parking lots or ramp entrances. The reading distance of the long-distance card reader can reach about 8m, and the card can be read at a distance, and the brake lever is automatically raised, which not only improves the speed of entering and exiting the field, but also ensures the safety of vehicles. Here is a case to illustrate:
There are more than 900 residents in a community in Beijing, and there are 500 parking spaces in the community. The vehicles entering and leaving the community during the rush hour often have serious queues. Later, the community tried to install a non-stop parking lot management system, which significantly accelerated the traffic speed while also saving part of the cost of property management. The long-distance parking lot system of the system is based on a full TCP/IP network design and adopts a modular combination design, which greatly reduces the installation, debugging and maintenance costs of the system, and has been trusted and recognized by users.
It can be seen that the application of RFID technology parking management system has the advantages of fast vehicle traffic, safe and efficient, and reasonable management. It is especially suitable for use in communities and units with more fixed users.
3. Long-distance parking lot management system
1. System principle
The long-distance parking lot management system attaches the label that identifies the vehicle to the windshield glass of the car, encodes the vehicle identification information, and calibrates the label to make it consistent with the system. When a car with a tag enters the reading area, the reading head emits a radio frequency signal to it, and part of the signal received by the tag adjustment is reflected back to the reader. The reader then reflects the identification code contained in the reflected signal to the code reader to read the code. The device decomposes the identification code from the signal, confirms the code according to the standard determined by the user, and transmits the code to the main computer or other data recording equipment.
When the vehicle arrives at the exit, the system automatically recognizes the card number by reading the information of the RFID card, and retrieves the corresponding vehicle record through the information in the internal database, so that the interface displays the user type, license plate number, vehicle photo and other information. In order for employees to check and verify, once an illegal user appears, the system will generate an alarm.
2. System Features
Convenience: Most of the traditional parking lots adopt short-distance card reading methods. You must stop and swipe the card. It is easy to get wet in rainy days. Parking and swiping the card on the up and down ramps can easily cause accidents such as car slipping and collision. Using UHF900M electronic tag reading technology, the continuous and stable card reading distance can reach about 8 meters, which can realize non-stop traffic. The card used is a passive readable and writable card, which can record the vehicle and entry and exit information, does not require a battery, and the cost is extremely low. At the same time, the system integrates card reader/camera pole, 12V DC power supply, connecting line, network switch and other equipment on the barrier, which is convenient for users to install.
Effectiveness: It can really reduce management costs and plug charging loopholes, and realize the rigor of parking lot management and the flawlessness of charging management. The entrance equipment of the original long-distance parking management system is very stable, can adapt to the harsh outdoor environment, and has strong fault tolerance. It can completely realize unattended operation to reduce management costs. At the same time, it can accurately record the number of vehicles currently parked in real time, and any abnormal vehicle entry and exit will be recorded by the system.
Reliability: The system can automatically capture images of entrance and exit vehicles, and the captured images can be compared with the owner’s information, preventing the phenomenon of one card with multiple uses. At the same time, the entire system can monitor the vehicle entrances and exits and the entire parking lot in real time, and supervise and manage the work of the exit toll collectors.
Safety: In order to avoid dangerous accidents of smashing cars and people, the system is not only equipped with high-reliability vehicle detectors and anti-corrosion ground sensing coils, but also added multiple anti-smashing such as infrared beams, blocking detection, and anti-smashing strips. The technical measures for driving and smashing people to ensure the safety of people and vehicles.
Modularization: The remote card reader and control integrated machine is the core of the parking lot management system, integrating functions such as vehicle entry and exit management, charging management, Chinese display, and voice prompts. Its communication adopts TCP/IP network mode to realize entrance card issuing machine and exit Toll collection machine, network camera, network voice intercom, high-speed data, image, video, voice and other information transmission between network remaining vehicle display screen and computer.
3. System composition
At present, it is mainly used for parking lots with fixed users as the main and temporary users as the auxiliary. It can be used in nested network to form a powerful parking lot management system. It is mainly composed of UHF900M remote card reader, integrated barrier, and entrance card issuing machine. , Export toll collection machine, network remaining parking space display, network voice intercom, toll display screen, voice prompt, vehicle-specific network camera, parking lot management software, sentry booth charging software, etc.
The following is an introduction to the main parts of the system:
(1) Entrance control part: integrated barriers, vehicle detectors, UHF900M long-distance card readers, entrance card issuers, and LED external display screens for remaining parking spaces.
(2) Export control part: integrated barriers, vehicle detectors, remote card reader control integrated machine, and export toll collection machine.
(3) Management center: computer host, parking lot management software, desktop card issuer, etc.
(4) Sentry box center: computer host, sentry box charging software, desktop card issuer, network voice intercom, thermal piaoju printer.
(5) Image capture system: dedicated network camera for parking lot.
The main components of the long-distance parking lot management system are modular design, the configuration is very flexible, powerful and complete, adapting to the management needs of multiple entry and multiple exit, not only suitable for simple parking lot management, but also suitable for on-site and off-site embedded Set of management.
The whole system mainly includes entrance equipment, exit equipment, guard booth charging system and central management system. The entrance equipment is responsible for controlling the entry of internal temporary vehicles and fixed vehicles, which can be unattended, and vehicles can enter the venue at will from any entrance. The exit equipment is responsible for controlling the exit of internal temporary vehicles and fixed vehicles, and vehicles can exit from any exit at will. The guard box toll system charges for temporary vehicles. Vehicles entering the field can pay at any exit, set the charging standard or print the toll receipt; at the same time, the guard box toll system can also be used to compare the images of each vehicle in real time. It is displayed on the screen of the sentry box management computer and saved in the computer for future verification. The software program management platform is the core part of the central management system. It is generally installed in the central control room or financial room. It is a management program for core operations such as data processing, parking lot area setting, parking lot charging plan, card management, and report query. Perform system settings and changes according to management requirements.
Fourth, the development prospects of RFID technology in parking lot management systems
At present, my country has become the world’s largest automobile market, and it is growing at a rapid rate of 40% per year. The convenience that cars bring to people’s lives is beyond doubt, but traffic jams at peak times are also becoming more serious, and queues when vehicles enter and exit residential quarters and office building parking lots are not uncommon. This makes us deeply feel that parking management urgently needs new technical means to maintain and solve, and it also brings new development opportunities to the parking management technology market. At present, many parking lot management systems use radio frequency identification RFID technology, combined with image digital processing, automatic control and other intelligent parking lot management technologies, effectively alleviating the difficulty of parking management. For example, ezpass in the United States and telepass in Europe, its remote card reading technology has gradually become the mainstream of parking lot management systems at home and abroad. It is believed that the application of RFID technology will be broader in the future.
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