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Full Version: Automatic vehicle identification (AVI) and city traffic management system
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Automatic vehicle identification (AVI) and city traffic management system
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Our complete RFID solution finally solves most problems rising in automatic vehicle identification (AVI) and city traffic management. Example functions include vehicle registration, annually check, traffic statistic (counting car numbers and measuring speed), anti-theft, police supervision, over-speed check, traffic light violation control, etc.
Considering two types of products are involved in this application and they have different functional emphasis, the solution will be explained in two parts. Part 1 focuses on automatic vehicle identification, each vehicle having one unique ID tag, such as SP-K300. Part 2 focus on traffic management, wireless vehicle detector applied here to check speed, count car number and work with camera monitoring system to realize required functions.
The whole system would be very flexible and more and more functions can be added on with the same hardware. Do not be restricted by the functions listed below since we just show partial standard functions of the system and give customers some concepts about this application. Please notice RFID technology is always customer oriented. We are open to work with customers to build most suitable and complete and cost effective solutions to meet your specific requirements.
Part 1: Automatic Vehicle Identification
Challenge and Demand
With the increasingly growth of the domestic economy and cause of transportation, the total quantity of vehicles is up to 60 million and increasing by 10% per year. With the rapid growth of vehicles, the illegal situation of escaping MOT, appropriation of license, faked license, refitment of stolen vehicles happened more and more. With the improvement of people’s living standard, the amount of taxi in the city went up sharply. Few taxi owners refused to take an operating license, or get a license from the surround village in a lower price and carry passengers in a big city. This kind of taxies (called ‘black taxi’) has greatly infringed the interests of country and industry. With the deepening of reform and opening-up, with China’s entering into WTO, there are more and more national and international conferences, cultural and sports activities hold. Vehicle jams, illegal break-in without license or even public security cases happens some times. In certain areas, the situation of stealing vehicles severely occurred, which has threatened the harmony and stability of the area. To the above illegal situations, vehicle administration department mainly control them by adding spot-check, strengthening polices and security men. Apparently, the efficiency is extremely low under this way, and it is too difficult to check at the scene. The situation that drivers tried to deny their illegal behavior always happened. In the aspect of vehicle guard against theft, GPS was one of
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the main selectable technology.
GPS anti stealing is an active network system, a large system. Service men in the supervising centre can provide 7x24 hours’ instant service, including preparing works before alarming and assigning police men.
But GPS can not be widespread due to the high cost. It costs RMB 6000~7000 yuan to install one set of GPS without screen and another thousand yuan for the service fee which the service provider requires. Under these situations, RFID technology can be applied to reduce the cost. Nowadays, AVI systems tend to use active RFID technology. AVI system can be installed at the entrance/exit of the road or street in the city, as the fixed AVI base station. It also can be installed on the top of the police vehicle, as a mobile AVI station. Mobile AVI system is one of the effective ways to solve the problems above. It can move to the assigned conference entrance, road side, checkpoints and toll stations. It can reliably collect data and information from the vehicles passing by (or stop) in real time, on which active RFID tags are installed. By using long range RFID technology, the collected data can be identified, transmitted to the vehicle control centre via (GSM/GPRS/CDMA) and then compared with the saved information in the database of the center to judge whether the vehicle is illegal, or has disobeyed traffic laws or even stolen. The results of comparison will feed back to the AVI system to determine the disposure for the vehicle. For those blacklisted vehicles, the police man can alarm and hold up at once, or inform the check points ahead via communication equipments to hold up them.
Application
AVI (Automatic Vehicle Identification-AVI), based on active RFID technology, includes
Car RF tags, fixed AVI base station and mobile AVI base station.
1. car RF tags
Car RF tags contain car information, car status and information of car owner. The RF tag has an unique ID code worldwide. The ID code and its information are stored at the information exchange networks of the public security department. The code is static and on the alert until the car is stolen or traffic information is inquired by the car owner. The code can help the police to identify and track the stolen car. The tag must be installed firmly, reliably and as possible as concealed. It can be installed in special manner so that it can alarm automatically once be taken down, without being misused.
2. Fixed AVI base station system
By using active RF tags, the identification range can reach 2~80m. Fixed AVI station is usually applied in the Customs, check points and toll stations of vital communication lines to examine, identify and record the passing vehicles. Equipments such as Reader/Writer, intellegent controllor, data transmission unit and power supply are installed in the machine room beside the road.
While there is a car with tag passing through the line, the system can read the ID code of the tag, time for passing and the line number, then store these information into the controller’s momery. The data transmission unit can pass the vehicle data information collected to public security department and transportation administration center via networks (DDN), meanwhile communicate the command of administration center to the AVI system to depend whether the car can pass through or not.
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3. moblie AVI base station system
in some applications, such as public security and road administration, vital conference and other security cases, mobile AVI system is needed, which can move to any point at the assigned road side or conference entrance to check the vehicles passing by. The equipments it contains is as similar as fixed AVI system, but more simplized. Mobile AVI system can be intalled on the modified police car. It can communicate and transmit data with center with mobile GSM networks or in the way of short message (or other way).
If it is requied to report the podition of AVI, the car can be equipped with a GPS receiver which can report the position to the control centre by GSM short message.
4. Simplized mobile check equipment
In some special circumstances, Simplized mobile check equipment such as PDA handheld reader can be used. The check officer can use PDA reader to check the passing vehicles in some narrow area. The information of stolen vihecles (black list) can be downloaded in the PDA previously, once the same information is read, the system will alarm immediately.
Guard against theft networks based on AVI & GPS
The system is consisted of fixed AVI, mobile AVI and GPS locating and guiding system, DDN data transmission and exchange system and GSM mobile communication system. As the diagram below:
Once the owners who use RFID tags found their car stolen, they can give an alarm to the police. While the police receive the alarm, they are giving command to every fixed AVI station to check the passing vehicles, reading the RFID tags of the cars passing by and
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comparing with the taget vehicle’s information. If the present car is the target car, then send the car’s ID, location of the AVI station and time information to the police via DDN.
After receiving the signal, the police can send SMS to the police cars which are equipped with mobile AVI and GPS via GSM. When the police car confirm the message, they will find the best route by using route optimization via GPS locating and guiding system. Afier confirmation and route optimization for several times and sending its own GPS location to other police cars, the stolen car will be hold up and criminals will be caught. The whole process for the return of the stolen car is as below:
Besides guard against theft function, for the cars equipped with GPS, the system can also provide road location and vehicle location inquiry function.
Under the assurance of guard against theft, by using RFID tech, the system has greatly reduce the cost, which is acceptable for most people. It has also saved the police force and enhanced the reaction velocity, especially has potential market for wide spreading in taxi industry. Meanwhile, the system can be combined with ETC, AEI and GAI system to be the vital parts of the intelligent transportation system.
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Remark: the application is also fit able for military and police vehicle anti-fake distinguishing field.