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1.Overview
As one of the key technologies of the Internet of Things, RFID is a non-contact automatic identification technology that automatically recognizes target objects and obtains related data through radio frequency signals. The identification work does not require manual intervention and can work in various harsh environments. Because RFID technology can identify high-speed moving objects and can operate multiple tags at the same time, it has the characteristics of non-contact, long reading distance, strong environmental adaptability, storage and carrying more information, and high-speed batch reading. One of the top ten technology trends.
RFID technology has been well applied in the fields of production management and control, traffic management, public safety, modern logistics and supply chain management, military equipment visualization, anti-counterfeiting and asset management, major events and events in the field of industrial automation.
As an emerging automatic identification technology, RFID has been rapidly developed today. The RFID application system composed of it can have functions such as automatic identification, remote detection and visualization, and it can be applied to the automatic identification and management of mobile vehicles. , Which can connect urban vehicles with the network through RFID and other information collection and sensing equipment to realize the intelligent identification and management of vehicles, build a “Internet of Vehicles” management platform, and provide service functions related to urban vehicle supervision and management. It has a wide range of applications prospect.
2. The application status of RFID technology in the domestic intelligent transportation field
Due to the characteristics of the RFID system, it has become one of the important application technologies in the field of intelligent transportation, and it is gradually merging with traditional intelligent transportation technology and is getting better applications. Its applications include: intelligent parking lot management, vehicle intelligent traffic management, vehicle dispatch management, port and terminal vehicle management, vehicle intelligent weighing management, intelligent bus management, illegal vehicle inspection management, customs vehicle clearance management, motor vehicle exhaust emission control management, etc. .
With the development of RFID chip technology and technology, the sensitivity continues to increase, making it possible for the label pasted on the front windshield of the car to be used as a reliable information source for RFID electronic license plates, and the core technology of the RFID reader compatible with it With continuous upgrades, the performance of the entire RFID front-end information collection system has been greatly improved. When the vehicle’s moving speed reaches 120km, it is possible to read and write RFID electronic license plates, making passive RFID technology a reality in urban traffic supervision, and greatly reducing the cost of RFID electronic license plates and RFID systems.
At present, some cities in China have achieved good applications in the management of vehicle exhaust emission control, environmental protection, road and bridge toll management, and intelligent management of urban vehicle inspections. They have improved the efficiency of road vehicle traffic, reduced vehicle violations and violations, and governance. Intelligent Building & City Information 2010 5 No.162 25 has achieved good social and economic benefits in terms of motor vehicle exhaust emissions.
However, there are also some problems in application promotion, which are concentrated in the following two aspects:
(1) The data in the RFID electronic tag and the data security and confidentiality of the RFID system will directly affect the reliability and authenticity of the entire system, as well as the protection of operating data.
(2) Reasonably define applications and build a multi-domain application platform, so that the “Internet of Vehicles” can provide efficient management and services for operations.
3. Data security and confidentiality of RFID system
In addition to the data storage and transmission security of the background application system, the security of the entire RFID system should also focus on the following four issues:
(1) The data security of the RFID electronic tag chip as an electronic license plate.
(2) Encryption and authorization of RFID electronic tags.
(3) Encryption and authorization of RFID reading and writing equipment.
(4) The legality verification of RFID electronic tags by RFID reading and writing equipment.
For the data security of the RFID electronic tag chip, it is necessary to comprehensively consider the division of labor and operation functions of the EPC area, TID area, USER area, and Reserved area. The key and encryption algorithm generated by the key management system are used to perform the data storage on the tag. Digital signatures and generation of access passwords for accessing vehicle electronic tags. According to the definition, the scatter factor can use data in the EPC and TID areas, and determine whether the TID is customized by the manufacturer according to the model of the tag chip.
For the encryption and authorization of RFID reading and writing equipment, RFID electronic tags, and the former’s verification of the latter’s legitimacy, a key management system needs to be established and a security authentication key card is issued to ensure that different key versions can be established. And define keys of different application types according to different functions or applications.
4.Urban Motor Vehicle Supervision System Solution Based on RFID Technology
According to the current status and existing problems, the author believes that the overall goal of an urban motor vehicle supervision system based on RFID technology should be “multi-point fast non-contact data collection, secure data storage and exchange, build a platform, establish system standards and Standardize and comprehensively apply in multiple fields, and effectively realize the comprehensive supervision of motor vehicles.”
Motor vehicle supervision systems are often regional, cross-industry, and multi-technology application platform systems. Therefore, the architecture design will fully consider the speed of data transmission, the quality and safety of the data, the reasonableness of the overall business process, the standardization and scalability of each link interface, and the reliability and fault tolerance of the entire system. In addition, whether due to the network or the system server, the system should have emergency response capabilities.
The system should form a full-process and full-life cycle management from licensing, inspection, maintenance, use, illegal handling, scrapping, etc., and improve the vehicle database through electronic management of vehicle licenses. The electronic tag is attached to the motor vehicle as an electronic license plate, and the comprehensive information of vehicle supervision is stored inside the electronic tag. Through the RFID hardware supervision equipment, the problematic vehicle is analyzed and identified, the problem is found at one point, and the entire network is monitored to effectively prevent and combat crime; Through the RFID supervision platform, new methods and new methods are used to solve the intersections and blank points in the administrative management work, and realize the integrity, uniformity and harmony of the law enforcement of motor vehicles, making the management from extensive management to comprehensive management. Make the service from a single domain to cross domains.
(1) System network structure
From the perspective of hardware equipment deployment, first establish a unified data center to summarize, analyze, process, and distribute data to support the daily operation of various business subsystems. For different applications, set up business application servers, interface servers, and middleware. Servers, Web servers, etc., effectively balance the load of the system, and guarantee the security of device access through firewalls and other means.
The inspection equipment of the terminal node adopts a combination of mobile and fixed. Fixed inspection equipment is deployed in urban roads, high-speed entrances and exits, checkpoints and other places, combined with mobile inspection methods to form an urban dynamic network vehicle monitoring system. As shown in Figure 1.
Motor vehicle supervision adopts the principle of fixed first and mobile second. Deploy fixed inspection equipment at fixed locations such as the entrances and exits of urban arterial roads, sections of prosperous locations, offices, and the location of municipal committees and governments. At the same time, mobile inspection methods (vehicle, handheld) are used as mobile inspection methods to realize real-time online monitoring of motor vehicles , Realize immediate and rapid detection of illegal and illegal vehicles, effectively control and track their course of action, and intercept law enforcement in a timely manner.
(2) System composition
The system completes data collection through mobile, fixed, handheld inspection equipment and cameras, integrates dynamic image recognition technology and RFID radio frequency identification technology, uses image recognition of physical license plates and vehicle characteristics, and remote radio frequency identification of RFID electronic tags The “dual electronic eyes” recognition technology of the company forms the basic supervision information data in the vehicle supervision information database.
The supervision platform management system consists of subsystems such as license management, traffic information management, public information management, and motor vehicle inspection and supervision. It completes the interaction between the platform system and users, system management and maintenance, and vehicle inspection. The middleware server is the core component of the system. Under its unified scheduling and coordination, it completes many application functions such as billing, settlement, traffic statistics, and vehicle inspection. The platform system realizes the connection with external third-party interfaces through the security gateway, such as environmental protection, charge management, call center, command and dispatch, insurance, taxation, public security and other applications, as shown in Figure 2.
In addition, the system should be able to automatically identify the following vehicles: stolen, smuggled vehicles, fake and unlicensed vehicles, vehicles that have not paid fines for violations, hit-and-run vehicles, scrapped vehicles, vehicles that are overdue without annual inspection, vehicles in arrears and taxes, and vehicles that have not been bought Compulsory third party liability insurance vehicles, unlicensed vehicles, and vehicles driven by drivers without service qualification certification.
With the vigorous derivation of the government, RFID technology has developed vigorously in many application fields in my country. In the supervision of urban motor vehicles, RFID technology not only solves some of the application defects of traditional smart Giti technology, such as the inability to identify fake license plates, but also makes “Internet of Vehicles” possible, serving smart urban traffic management, and has a bright application prospect.
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