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In order to improve the utilization of the map data unit and the network bandwidth when displaying on the terminal system, an improved strategy is putted forward based on the existing map data pre-fetch strategy. This strategy considers the road network information and the current direction angle when the system pre-fetches map data. Tests show that the improved strategy can not only meet the real-time...
Modern technical systems are increasingly built to exhibit self-x properties as, e.g., self-healing or self-optimization. For this, they require adaptation at runtime. This is even true for embedded or mechatronic systems which often operate in safety-critical environments. There, the effects of the adaptation with respect to safety must be analyzed carefully. However, not all parameters needed for...
Architectures in which multicore chips are augmented with graphics processing units (GPUs) have great potential in many domains in which computationally intensive real-time workloads must be supported. However, unlike standard CPUs, GPUs are treated as I/O devices and require the use of interrupts to facilitate communication with CPUs. Given their disruptive nature, interrupts must be dealt with carefully...
Traffic jam is a major problem in Bangkok and nearby provinces in Thailand. Currently, there have been several attempts to solve this elevating problem by using GPS together with GPRS technologies in tracking and collecting traffic data from vehicles. In this work, we obtained one-month records of GPS data from 297 volunteered vehicles. Using vehicles' velocity as input, we have developed a travel...
Driver assistance system enhances traffic safety and efficiency. Accurate 3D pose of front vehicle can help driver to make right decisions on road. We propose a novel real-time system to estimate 3D pose of the front vehicle. This system consists of two parallel threads: vehicle rear tracking and mapping. Vehicle rear is firstly identified in the video captured by an on-board camera, after license...
In recent years, intelligent traffic system (ITS) and telematics system have become a popular issue for traffic safety, convenience and efficiency. The real-time and historical traffic and other roadside information is very helpful information and can be analyzed to give good telematics services and traffic controlling, such as navigation, traffic flow, weather, traffic prediction and so on. This...
This paper presents a flexible and collaborative transport organization, developed in the French PRODIGE project and based on two new paradigms: product-oriented routing problems and smart products. Reconfiguration of transportation being supported by opportunistic transshipment between different vehicles, the use of EPCglobal network is discussed as an efficient and agile method to guarantee no break...
This paper presents a 9-Degree of Freedom (9-DOF) vehicle model combined with a closed-loop driver model for the purpose of developing automatic steering control. The driver model was developed to control the steering angle and uses a lookup table path as a reference for the control input. The proposed driver model for the outer-loop controllers are combination of Proportional-Integral (PI) control...
Cooperative traffic safety is a straightforward approach for a significant reduction of accidents and fatalities. This paper presents a predictive safety system based on a cooperative localization technology using transponders combined with a monocular camera. By means of these sensor components other traffic partners in the surrounding area are recognized and tracked even in case of occlusion. Using...
In spite of several technical advances made in recent years by the automotive industry, the driver's behaviour still influences significantly the overall fuel consumption. With the rise of smartphones adoption, there are also new opportunities to increase the awareness to this issue. The main aim of this paper is to present a new smartphone application that will help drivers reduce the fuel consumption...
The paper presents a new service paradigm for Vehicle Communication Platforms (VCPs), based on the Sensor Cloud concept. According to this paradigm, VCPs make available their components, including vehicle sensor and devices, to third-party vehicle monitoring applications, as virtual resources. We prototyped a Sensor Cloud service on the Click & Find™ VCP, currently supporting real-time Intelligent...
Developing traffic signal control methods is considered as the most important way to improve the traffic efficiency of modern roundabouts. This paper applies a traffic signal controller with two fuzzy layers for signalizing roundabouts. The outer layer of the controller computes urgency degrees of all the phase subsets and then activates the most urgent subset. This mechanism helps to instantly respond...
With the growing of hazardous chemicals transportation, supervision system for hazardous chemicals transportation is getting more and more attention. In China, supervisory system for hazardous chemicals is limited to tracking by Global Positioning System (GPS), positioning and simple data collection and judgments which cannot achieve a real sense of risk pre-warning. The paper develops a system architecture...
We describe a real-time pedestrian detection system intended for use in automotive applications. Our system demonstrates superior detection performance when compared to many state-of-the-art detectors and is able to run at a speed of 14 fps on an Intel Core i7 computer when applied to 640×480 images. Our approach uses an analysis of geometric constraints to efficiently search feature pyramids and...
The emergence of Intelligent Transport Systems has led to the development of a specific communications standard carried out by the IEEE: Wireless Access in Vehicular Environments (WAVE). However, this standard does not address certain critical security and real time application constraints, such as the platooning guidance of transport units. This paper presents an original proposal of medium access...
This paper presents a novel approach to autonomous driving at the vehicle's handling limits. Such a system requires a high speed, consistent control signal as well as numerous safety features capable of monitoring and stopping the vehicle. When operating, the system's high level controller utilizes a highly accurate differential GPS and known friction values to drive a precomputed path at the friction...
The current state of the art advancements in sensors, computation, and wireless communication technologies has made possible a vast range of emerging applications in large number of fields such as in civil and military transportation systems, personal communications, health care, industrial automation, smart grids, smart homes, etc. Even though the automobile does not seem to have changed much its...
Large-scale renewable energy source integration brings a significant challenge to the dispatch of power network. The potential synergy among the electrical vehicle charging, wind power and photovoltaic power has provided a workable approach for power grid to accommodate more renewable energy sources. By optimization of charging plan of electrical vehicle charging station of area grid under the premise...
For time-sensitive applications with hard real-time constraint, the utility of a decision goes to zero if the deadline is missed thus it is very important to use methodologies that can deliver solutions within their time limit. For large scale monitoring and prediction systems with small time periods this problem renders conservative optimization techniques to be useless especially because of the...
The paper presents the concept of a new visual based driving assistance system for increasing the safety and comfort in traffic. Using a high speed camera observing the vehicle's driver, an embedded image analysis module and a selective darkening panel attached to the windshield, the system is able to detect the appropriate area to be darkened in order to shade the driver's eyes and avoid the dazzling...
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