Using intelligent agents for Transportation Regulation Support System design

This paper presents an agent-based approach used to design a Transportation Regulation Support System (TRSS), that reports the network activity in real-time and thus assists the bus network regulators. The objective is to combine the functionalities of the existing information system with the functionalities of a decision support system in order to propose a generic model of a traffic regulation support system. Unlike the other approaches that only deal with a specific task, the original feature of our generic model is that it proposes a global approach to the regulation function under normal conditions (network monitoring, dynamic timetable management) and under disrupted conditions (disturbance assessment and action planning of feasible solutions). Following the introduction, the second section presents the notions of the domain and highlights the main regulation problems. The third section details and motivates our choice of the components of the generic model. Based on our generic model, in the fourth section, we present a TRSS prototype called SATIR (Système Automatique de Traitement des Incidents en Réseau – Automatic System for Network Incident Processing) that we have developed. SATIR has been tested on the Brussels transportation network (STIB). The results are presented in the fifth section. Lastly, we show how using the multi-agent paradigm opens perspectives regarding the development of new functionalities to improve the management of a bus network.     

Identification of vehicle sensor locations for link-based network traffic applications

Information on link flows in a vehicular traffic network is critical for developing long-term planning and/or short-term operational management strategies. In the literature, most studies to develop such strategies typically assume the availability of measured link traffic information on all network links, either through manual survey or advanced traffic sensor technologies. In practical applications, the assumption of installed sensors on all links is generally unrealistic due to budgetary constraints. It motivates the need to estimate flows on all links of a traffic network based on the measurement of link flows on a subset of links with suitably equipped sensors. This study, addressed from a budgetary planning perspective, seeks to identify the smallest subset of links in a network on which to locate sensors that enables the accurate estimation of traffic flows on all links of the network under steady-state conditions. Here, steady-state implies that the path flows are static. A “basis link” method is proposed to determine the locations of vehicle sensors, by using the link-path incidence matrix to express the network structure and then identifying its “basis” in a matrix algebra context. The theoretical background and mathematical properties of the proposed method are elaborated. The approach is useful for deploying long-term planning and link-based applications in traffic networks.     

基于GSM-R的通信模组管理平台的设计与研究

GSM-R通信模组是铁路物联网的重要信息传输工具,通信模组能够使得布设在铁路沿线的传感器具备网络接入能力,同时能够保证通信过程的安全可靠,进而保障高速铁路运行的安全稳定和高效运转.设计一种基于GSM-R的通信模组管理平台,用于实现对GSM-R通信模组的安全接入、行为管控、业务分析以及服务分析,辅助铁路上传感器间信息的安...     

城市排水管道非开挖修复技术在南方某地区的应用

城市排水管道承担着城市污水、雨水运输排放等任务，是城市平稳安全运行的基础。排水管道的老化情况具有不可见性，在地面上无法了解地下管道的状况，这会给管道业主带来经济损失，同时也会带来公众压力，因此管道非开挖修复技术的应用意义重大。结合南方某地区已建污水管修复工程的实例对非开挖修复技术进行研究，并探析其在市政管网修复中的应用。