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1.1 Project background
According to information from the Traffic Management Bureau of the Ministry of Public Security, as of the end of October 2008, the number of private motor vehicles in my country was 160 million. Our country has now stepped into the information society and the automobile society simultaneously. A super giant “automobile socioeconomic field” centered on automobile application consumption and road traffic activities has formed and entered a period of rapid development.
1.2 Demand analysis
In China, statistics from the Ministry of Public Security of my country show that in 2004, 107,077 people were killed in road traffic injuries, 480,864 were injured, and economic losses were 2.39 billion yuan. Traffic accidents have claimed lives, as well as safety and wealth. Therefore, the issue of traffic safety has become one of the top issues that countries all over the world attach importance to and pay close attention to.
In particular, there are several thorny issues in current traffic management, including the following:
1.2.1 Unable to accurately identify the vehicle’s identity and qualifications
Vehicle certification is through the physical license plate as the only source of information, the driver’s certification is through the paper driver’s license, and the vehicle owner and the vehicle’s matching certification is through the driving license. The physical license plate, driver’s license, and driving license can be said to be the identity of the vehicle and the owner. The only sign, however, the currently applied certificate manufacturing technology is backward and can easily be forged by criminals.
However, the supervision and management of the public security traffic department only relies on the interception and inspection of relevant personnel during road inspections. First of all, it cannot guarantee that every vehicle will be inspected, and it consumes a lot of police force. The most important thing is human eye identification. Counterfeiters have the opportunity to take advantage, and the phenomenon of manufacturing and selling fake license plates and related documents is serious.
1.2.2 There is an urgent need to establish a traffic monitoring system based on vehicle recognition
For traffic flow statistics and road condition monitoring, most of them use video monitoring methods. The accuracy of related data statistics is poor. Moreover, relevant personnel are often required to monitor and dispatch through the video wall of the main control room, which consumes manpower, but the results are limited. Therefore, there is an urgent need for a traffic monitoring and management system based on vehicle information recognition to solve the problem of ineffective monitoring by traditional methods.
1.2.3 The demand for regional traffic charges appears
The city-centered “Regional Electronic Toll Collection System (RETC) for Road Traffic” is gradually emerging. Each city has different charging methods for urban roads, bridges, tunnels, etc., both adopting a pay-per-use toll system and an annual ticket system. That is, the annual fee type, no matter which method, the vehicle needs to be identified, so as to judge the payment of the vehicle and decide whether to pass it. This toll method is different from the highway ETC application system engineering, which requires special technical means to achieve it. It is still in its infancy stage, and the market has gradually formed and the demand is strong.
1.3 RFID management and construction planning for vehicle inspection
1.3.1 RFID working principle
An urban traffic management and service system based on RFID technology is essentially to establish a comprehensive vehicle information platform, with the goal of promoting the platformization and servicing of vehicle-related information in public security and transportation systems. Using RFID as the basic information collection method, it can Fundamentally realize the sharing of car-related information resources and improve the informatization level of vehicle management.
1.3.2 System Architecture Planning
The system comprehensively uses RFID (radio frequency) technology, image recognition technology, data encryption technology, multi-sensor information fusion technology, computer and network technology and other international and domestic leading technical means, with RFID anti-counterfeiting ceiling lights (built-in Vehicle electronic identity information card based on active radio frequency technology) and traditional license plate as the information source, with the system management platform and data server as the operating center, combined with the vehicle and owner information database and regular data updates, and pass the hand-held inspection carried by law enforcement officers System, vehicle-mounted inspection system, and fixed inspection system are three kinds of inspection methods, which provide voice and digital alarms immediately when abnormal situations are found, and upload the inspection information to the system management platform in time to form a dynamic, three-dimensional, rigorous and accurate intelligence Automated traffic supervision and inspection network.
Each car corresponds to an RFID anti-counterfeiting top light, using a globally unique RFID serial number, special encryption algorithm and chip internal data storage mode, which can effectively prevent the memory information from being cracked or tampered with, ensuring that the vehicle electronic identity information card in the RFID anti-counterfeiting top light Information security.
1.3.3 Management platform
The management platform of the taxi intelligent inspection system. The management platform is the man-machine dialogue system of the entire taxi intelligent inspection system. It is installed on a standard desktop computer and has three main functions:
1. The functions of RFID anti-counterfeiting dome light such as information entry, modification, transfer and card replenishment;
2. Information management of all blacklisted vehicles;
3. Perform hierarchical authorization and management of administrators and operators.
The management platform exchanges data with the data server through the network to keep information in sync. At the same time, the management platform can provide various data statistics and report functions such as blacklist and anti-counterfeiting dome light by querying the data in the data server. It can also back up and upgrade the data through physical carriers such as U disks and SD data cards, and problems occur in any components. The system can be restored through data backup at any time, ensuring the safety of the system.
Data server management:
The data server is to install a database system on a dedicated server, save the detailed information of the vehicle and the detailed information of the RFID anti-counterfeiting top light in the database, and connect with the management platform, the vehicle inspection system, the handheld inspection system, and the fixed inspection system through a wired or wireless network. Data is exchanged in time. Key data and database tables are encrypted. The system itself has functions to prevent viruses and prevent hackers from intruding in software and hardware. The system automatically performs backups on a regular basis. The server is equipped with a backup power supply. Once the power is off or other abnormal conditions, the data It can also be restored in time.
1.3.4 On-board inspection system
The vehicle inspection system consists of three parts: image recognition system, radio frequency signal receiving system and data processing system. The on-board inspection system is installed in the traffic law enforcement vehicle. Law enforcement officers can drive traffic law enforcement vehicles to conduct vehicle inspections anywhere within the jurisdiction. It integrates dynamic image recognition technology and RFID radio frequency identification technology. It uses image recognition of physical license plates and vehicle characteristics and remote radio frequency identification of RFID anti-counterfeiting ceiling lights. The physical feature information and electronic information of the vehicle are compared, and the problematic vehicle is found, and the voice and digital display alarm will be issued immediately to prompt the law enforcement personnel to intercept; the system can perform dynamic inspections on vehicles traveling in the same direction or reverse direction at a speed of 60 kilometers per hour while stopping. It is also possible to track and inspect the moving vehicles while it is moving, and to inspect the parked vehicles.
1.3.5 Handheld inspection system
The hand-held inspection system is a portable inspection device equipped for law enforcement personnel, which is mainly used for the inspection of slow-moving or parked vehicles. When law enforcement officers point the receiving antenna of the handheld inspection system at a suspicious vehicle, if the information displayed by the system matches the physical characteristics of the vehicle, it is a legitimate vehicle. If the system cannot receive electronic information or the received electronic information and physical characteristics If it does not match, the system will immediately issue an alarm prompt, and then it can be determined that the vehicle is an illegal vehicle or a problem vehicle; at the same time, the handheld inspection system can also be set to wirelessly connect to the nearby fixed inspection system. When the fixed inspection system finds a problem vehicle, it will immediately report The handheld inspection system alarms and displays the vehicle information; the working distance of the handheld inspection system is within 20 meters.
Fixed audit system
The fixed inspection system consists of four parts: an image recognition system, a radio frequency signal receiving system, a data processing system, and a wireless or wired transmission system.
Fixed inspection systems are generally installed at specific points such as traffic guards or toll stations. The system automatically monitors vehicles passing the inspection range. When illegal vehicles or problem vehicles are found and identified, the system will automatically call the police and provide information about the vehicle. It was quickly uploaded to the management platform and the nearby handheld inspection system, and the law enforcement officers found the illegal vehicle or the problematic vehicle in a timely manner based on the alarm information.
1.4 Construction advantages and technical characteristics
RFID signal directional transmitting and receiving technology
By adopting advanced RFID signal directional strengthening and directional receiving technology, the system effectively avoids adjacent signal interference, enables image recognition and RFID radio frequency identification to be performed simultaneously, and ensures that the system can effectively inspect vehicles in the specified direction.
“Dual electronic eyes” recognition technology
The vehicle inspection system and the fixed inspection system have dual “electronic eyes” of image recognition and RFID radio frequency identification, which can accurately capture the physical characteristics and electronic information of the vehicle and the owner, and quickly make intelligent comparisons with the system database, and instantly send voice and data to abnormal situations. The alarm is displayed to ensure that all kinds of illegal vehicles and problem vehicles are found on the spot.
Safe and stable data transmission technology
The system adopts a safe and unobstructed wireless or wired network transmission method, so that each inspection system can update the taxi and driver file information in a timely manner through the data server, and at the same time upload the inspection situation to the management platform in time, so as to realize the connection between the management platform and each inspection system Data synchronization.
Hierarchical authorization and internal monitoring methods
Regarding the rights and responsibilities of users at all levels, the system has scientifically authorized the entry, modification, reading, and monitoring of system data. The authorization can also be defined according to the requirements of users, combined with the upper-level administrators to the lower-level administrators. The monitoring of information input and output and audit data can effectively avoid violations such as theft by internal staff.
24/7 inspection technology
The system adopts internationally leading fuzzy recognition technology, digital focusing technology and multi-sensor information fusion technology, which effectively solves the difficulty of image recognition and signal reception under severe weather conditions such as dark night, low light environment, rain and fog weather, and basically achieves similar It is difficult to perform all-weather inspections of equipment.
Comprehensive inspection methods
The system can be carried out by law enforcement personnel carrying a handheld inspection system or operating a vehicle-mounted inspection system to conduct mobile inspections, and it can also be used for fixed-point monitoring by installing fixed inspection systems at fixed points such as toll stations, traffic booths, and intersections. The three inspection methods are combined , Deepen the inspection tentacles to all roads or parking lots, whether it is a moving vehicle or a parked vehicle, whether it is an illegal vehicle or a vehicle that violates regulations, all-round inspection and tracking can be realized.
Humanized design
The system uses the system to promptly alarm and display relevant information when abnormal situations are discovered, and the design of default release for legal vehicles can enhance the pertinence and humanization of the inspection, thereby improving the efficiency of the inspection and achieving civilized law enforcement; at the same time, the on-board and fixed inspection systems can The effective identification of vehicles within 80 meters ensures the safe distance of law enforcement interception and achieves the effect of protecting the safety of law enforcement personnel.
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