Highway Intelligent Monitor Communication Technology

Shandong highway monitor system is a traffic management system which dynamically monitor and control the operation of highway with its advanced network information collection system,information processing system and information sending system .it makes real-time detection,analysis and judgment for climate and environment changes of its traffic flow and road, and use certain control strategy to be speed limited and inducing instruction then make the throughout timely continuous monitor for our province road network.Monitoring system software mainly realize the data collection and control processing function by the total of traffic flow parameters collection ,variable information symbol, the content of variable speed-limited symbol, urgent telephone alert information artificial observation of meteorological and manual input data and so on . They analyze and process the information data, formulate the corresponding transportation control plan, and induce traffic behavior with sending the induced information-by-information dissemination equipment. The information collection can be divided into automatic gathering way and manual gathering way , the control mode may divided into the automatic control and manual control two ways.The advance in technology and the market competition promote the relative structure continually upgrades; it uses the ripe new technology process and material to promote the quality and technique content of the railway monitor system products. These activities can not only effectively the program quality but also improve the skill lever, and speed high-tech achievements in building projects in our province. In the Shandong Province highway information management system engineering construction, the use of urgent telephone equipment, video frequency vehicles detection application, small variable message signs design and so on can concentrated reflection this point. The practice fullly proof that the basic measure to improve the highway engineering quality of highway is depending on technical improvement.The highway information system is the highway modern management struct system, it must realize the information such as the data of supervisory system and charge system., sound and picture accuate and prompt. It also can make the information contact between different sections of the super highway unimpeded. At the same time it should supply information for the internal department and the outside establishment . Simultaneously the highway information system took the important part of professional transportation net, is the main body to deliver transportation information. It also contributes to various net services such as Internet and the television meeting system.From the above analysis we can see that the superhighway information system is a special-purpose multimedia transmission system, which deals in many busyness line and long distance transfer.Fiber optical technology, IP technology, picture' code technology and the asynchronous (ATM) mode are the four big techniques, which have huge influence to network development in the 1990's. Its development enables the synthesis service numeral network to become possible. At present ATM and IP technique are adaptable for the highway correspondence network.The highway communications system is the collection sound, picture and data information body multimedia digital transmission system. The SDH is, as a material, stable key transmission technology, still will apply in next period of time to the single highway communication system . But along with the arrival of the superhighway unite charge system and the concentrate supervision system, obviously the ATM and SDH are the best choice and the breadth IP (IP and ATM IP and SDH,IP and WDM)techniques will be development trend in the future.