| At present the city's traffic management departments to collect information on the vehicle through the information input into the text in the style of documents to carry out and complete the task of information management is relying on the identification of the naked eye examination. Documents easily broken, easily forged, lost to re-report the loss after the procedure relatively trouble, spent a lot of human resources.RFID systems constitute a presentation, radio frequency identification technology for the realization of the number of vehicle information, vehicle identification of automation and intelligent management of the vehicles provided a good platform. RFID (Tag) because of their physical characteristics and its technical characteristics can be encrypted, as the carrier of information stored vehicles can be a good vehicle to make up for traditional information carriers of many defects, radio frequency identification devices through non-contact read electronic tags (Tag) in The information will be able to achieve the rapid acquisition of information, simple and automatic identification.The purpose of this paper is the use of radio frequency identification technology, the Public Security Bureau of Traffic Management on the existing vehicle-related information into the electronic label, the vehicles efficient, fast and automatic identification of effective supervision and management. This paper in the main completed the following three tasks:(1) Through the understanding of RFID systems, identifying suitable for the basic component of the system.(2) The use of VB to design vehicles information management systems, serial communication interface configuration and implementation and introduction to the use of the database.(3) Which describes the advantages and disadvantages of the design system. First task: from the understanding of RFID systems, introduced the reader, label (chip), middleware is the basic component of RFID systems. RFID tags include the following components: encoding / decoding circuitry, memory, antenna, power, communications control circuit; typical reader with high-frequency modules, control modules and transponder connected with the coupling components; middleware functions Is a basis for filtering, reader integration and control. Its location in the background network system between the reader and for managing the data flow between them. RFID systems on the principle of radio frequency, introduced a passive electronic labels and semi-passive and active systems.The vehicles in the information management system using a high-frequency system, its advantage lies in reading and writing distance; access to vehicle information system as a vehicle to achieve automatic identification of front-end platform for information collection, its overall options must be able to meet the vehicle automatically Recognition of the request, the coupling of the system after the way for the scattering of electromagnetic coupling; electricity using passive RFID way.The second task: The focus of this study is to apply the design, Visual Basic 6.0 (hereinafter referred to VB) is a powerful, easy to learn a programming language, object-oriented program is designed to function and therefore the application of this system the development by VB 6.0.Applications are given the public security departments pay HKMA vehicle information management function modules, including an application is also available in the database, application procedures used to complete the task of access to vehicle information, through various control orders issued by the complete control of the reader, Readers can in accordance with its requirements of the electronic tag read / write operations. Information stored in a database of vehicles, the transportation department vehicles can easily monitor and manage. Public security traffic management can be fully understand and master all regions of the road passenger and cargo vehicles and drivers and basic safety management situation. Improve the efficiency of the managers, but also facilitate the data carrier holder (the managers), so that managers were dismissed from the custody of a number of text-document of trouble.Serial Communication is the computer and RFID reader for data communications between a very important way is through the RS-232 serial interface for communication.In this system, we use Active X controls MSComm for applications through the serial interface provides the easiest way to send and receive data. MSComm can use ActiveX control very easily develop a computer serial port to use the computer communication procedures.To use the database application, to provide an interface that can process data in the database to operate. During the procedure used in the interface technology is the ADO. ADO applications through access to a database, we must first build up a database with ADO connection access to data sources, the so-called data sources that can be used for data applications, or, more precisely, they said you want to in the application procedures have been used in the That data, and then use ADO data sets to do so, add the corresponding code to achieve the database operation. ADO visit to the use of data sources, to use a database language and database system to create a database, the application system is to use SQL Sever 2000 to create a database. SQL Sever 2000 used as a client / server architecture, the application of this system in client / server architecture, because the database of information on the network can only spread, we can really facilitate the traffic management system In the use of achieving efficient, speedy, the purpose of automation.The third tasks: to the system to compare the advantages and disadvantages. Based on the complexity of the vehicle management and development of the system, a highly efficient, fast, high degree of automation to identify the advantages. But the system itself there are still many known and unknown shortcomings, the text of which was listed in the two areas, a solution needs to be improved RFID technology itself, but also take the right risk management and threat management solutions.If the system of electronic tags within the different memory cell area to join the information highway vehicles, such as payment status will be more convenient traffic management sector. At the same time an electronic tag can be applied to different sectors of the system, even at the same time as a medical insurance card, permit, driving licence, passport, and so the use of one card for use with the future development trend, we should continue in this field in-depth study .However, such a system is bound to develop a significant amount of time to discuss the collection of the unit, reached only after coordination possible. With a long-term perspective, the possibility of achieving very high, only to reduce costs need to spend more on time. |
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