| With the rapid development of the intelligent electronic technology, it has been becoming the main direction that the Intelligent Transportation uses the electronic information technologies to improve the management efficiency, the transport efficiency and the safety of the Freeway. The Intelligent Networked Charging System on Freeway is built for the Manual Toll Collection or the Electronic Toll Collection in the toll system of Close Highway. When a vehicle enters the entrance of the Freeway, it will receive a travel certificate(Contactless IC Card) which records its information automatically. Through the data transmission platform between the entrance and the exit, the information will be checked by automatically matching or manual matching at the exit, in order to judge whether it is the same vehicle or not, distinguish its route and mode, calculate the mileage and expenses, collect the fees, and split the fees with different sections.Networked Charging is an important work, which not only improves the toll service on Freeway and the management efficiency, but also becomes a significant part: of the strategy of the freeway informationization and the development of Intelligent Transportation. Since the Ministry of Communications of China published《the Provisional Technical Requirements on Freeway Free Charging Networked》in October 2000, the networked charging work at the provincial level has progressed rapidly. Up to June 2004, the basic networked charging systems have been built up in many provinces. What's more, with the increase of the sections in the networked, the scale has been steadily enlarged, and the implementation has been speed up.The article mainly includes:1. explanation of the basic concepts and theories of the charging policies and the charging system of Freeway;2. introduction to the structure and the design of the networked charging system, and also an example;3. design and implementation of the Lane Toll subsystem of networked charging system on Freeway.The Lane Toll subsystem, which is the basis and the main data source of the networked charging system of Freeway, will directly affect the whole system, in terms of its stability, reliability, continuity, accuracy, rapid response, and some other characteristics. The subsystem can be divided into two parts: the entrance lane and the exit lane. The Lane Toll subsystem is composed of the charging island, the toll booth, the lane, the rain-proof shed, and some other detection and control equipment. At the entrance lane, the toll collector provide the travel certificates (cards), or the information is recorded automatically by the electronic labels. At the exit lane, the toll collector receive the travel certificates (cards), and collect the fees. Taking advantage of the electronic charging system, the fees can be paid automatically by the on-street equipment. When the manual toll collection or the semi-automatic toll collection is used, the lane cameras and the booth cameras will be applied to record images automatically. Then the images will be stored in the computers with the toll data, and all the data may be regarded as the original database of the toll collection system. After paying the fees, the vehicles can leave the Freeway through the Autorailings.As a result of the difference in the freeway toll mode, the toll method and the payment methods, the configuration and the functions of the toll equipment are of great difference. The open model needs collecting the fees only once, and doesn't need the travel certificates. It emphasizes on identifying the model of the vehicles and collecting the fees accurately. In addition, the equipment of every traffic lanes has the same configuration. The closed model needs to confirm the model of the vehicles and the mileage at the same time. It must read and write the data of the travel certificates and the control information. This model attaches importance to identifying the model of the vehicles, read and write the information, and collecting the fees accurately. |
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