Application Research Of Sensing Equipment Monitor And Control Component In Intelligent Transportation

Since the beginning of twenty-first century, with the economic development in China, thedevelopment of the traffic has been unable to meet the people’s demand for transport, the trafficjam, frequent traffic accidents and so on a series of problems in many cities. With the appearanceof Internet of things, the development of intelligent transportation systems, providing solutionsto these problems. Intelligent transportation systems integrate advanced information technology,wireless communication technology, electronic control technology and computer processingtechnology. Although it can not extend the length of the road, but it can get real-time vehicleinformation by means of modern high-tech. Through the vehicle information feedback vehiclescan be guided to the smooth flow of traffic, to the purpose of reducing traffic congestion, loweraccident rates.Intelligent transportation system requirements to collect real-time information highway andstreet through outdoor sensor sensing equipment for large, working status of these outdoor sensorand sensing device stability and ensure the smooth operation of the intelligent transportationsystem. Sensing device is outside the long-term, often disturbed by various factors, it is difficultto ensure the stable working state. After the study，it is found that in order to ensure the stablestate of the sensing equipments, several aspects of the sensing equipments should be solved: Is itnormal to open? Will it have suspension of services during the working time? Is the datatransmission accurate and do the location move? To address the problems, Sensing devicemonitoring component model is proposed, it can monitor the real-time working status of thesensing equipments to make sure that the smooth running of the traffic.This article will propose the Sensing device monitoring model, which combines Sensingdevice monitoring and Component technology. Being applied in the field of sensing devicemonitoring, Component technology equipments can play its advantages of high reusability,quickly building, and improve the straincapacity of the Sensing device monitoring model in frontof different needs, improve the adaptability and scalability of the model and to accelerate thedevelopment of software systems and its costs.This paper briefly introduced several related technologies used in the course of the study ofthe Sensing equipment monitor and control, such as component technology, TCP and UDPprogramming techniques, rules engine, CometD technology, J2EE technology, custom forms andmetadata, etc.. Component technology improved the reusability of software, so the monitoringsystem can be used for more projects;TCP and UDP programming techniques is the one whichmust be used in the design and development of the monitoring system;Rules engine separatedbusiness logic and program development to improve the flexibility and maintainability of thesystem, makes it easier for developers to understand the business logic;CometD technologyoptimized the communication process of the client and server, making application systems morereal-time;The using of J2EE, custom forms and metadata improved the efficiency of the system development and shortened the development cycle, and saved its costs.Then, this paper studied the central problem of the Sensing equipment monitor andcontrol, designed a communication protocol, message protocol and movement instructionexecution mode. Communications between RSU and Lane controller is ensureed by the design ofcommunication protocol; Message protocol designed RSU packet capture packets, the servicestatus message, these messages can ensure collaborative work among RSU, OBU and Centerserver, monitor the working state of sensing equipments such as RSU,OBU,cameras. The actionexecution model designed the modalities for the implementation of the client browser sendingthe sensing equipment status query execution and execution model of heartbeat detectioninstruction in a central server, site server, sensing devices.This article applied Sensing equipment monitor and control in Wuhan road and bridge ETCsystem which is contract to build by CVIC, sensing equipment components was introduced in thedeployment and operation process of project. Through the application of the actual project, thegood performance of the sensing equipment monitoring component was verified.Finally, a brief summary and description of this article focuses on the key research workand the future research prospects. Sensing equipment monitoring component in practice hasmade some achievements, but also some shortcomings, such as component in the configurationprocess of the project is complicated, it is difficult to simple configuration; real-time monitoringprocess is not strong, there is room for improvement. Also need to continue to improve thesedeficiencies.