François Peyret

Institut Français

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Co-Authors

David Bétaille

Université Gustave Eiffel

Miguel Ortiz

Université Gustave Eiffel

David Bétaille

Institut Français

R. Toledo-Moreo

Universidad Politécnica de Cartagena

Dominique Meizel

Centre National de la Recherche Scientifique

Stéphan Miquel

Laboratoire de Mathématiques

Pierre‐Yves Gilliéron

École Polytechnique Fédérale de Lausanne

Ré-Mi Hage

Institut Français

ÉL

Éric Le Carpentier

Centre National de la Recherche Scientifique

Philippe Bonnifait

Université de Technologie de Compiègne

Cooperative Institutions

Centre National de la Recherche Scientifique

École Centrale de Nantes

Institut national de recherche en informatique et en automatique

Laboratoire de Mesure du Carbone 14

École Polytechnique Fédérale de Lausanne

Universidad de Murcia

Université de Rennes

Université de Technologie de Compiègne

Université Gustave Eiffel

Nantes Université

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Safer roads GNSS: a strong position

Pierre‐Yves Gilliéron François Peyret François Fischer

This article summarizes the outcomes of the SaPPART COST Action. It emphasizes the role of postitioning in liability-critical road applications, and the necessity to assess accurately the quality of GNSS based positioning..

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The new signalling techniques for maintenance mobile roadworks on highways

François Peyret Jean-Marc Sauner Jean-Pierre Deparis

Highway maintenance operations must be performed at increasingly faster rates, under increasingly dense traffic conditions, with an increasingly reduced work force, thus rendering the safety problems even more acute and the traditional static signalling techniques even more inadequate. A new and promising principle consists in following the mobile roadwork with vehicles carrying road signs and traffic lights (shadow vehicles) in order to cue drivers entering work zones to the lane they should use. These vehicles are commonly called cut-in arrows in France. Despite the advantages of this technique compared to the traditional one with cones, it does not eliminate the risk of rear-end collisions for the human drivers of these luminous arrows, this type of accident being one of the most common work zone accidents. Consequently, various projects, using automation and robotics technologies are under study in France, all of them being motivated by the same objective to move the workers away from the risky zones. For the covering abstract of the conference see IRRD 882436.

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Estimating the Degree of Compaction of Asphalt Using Proprioceptive Sensor and Dynamic Model

Proceedings of the ... ISARC (2001)

Arnaud Delclos Pierre‐Olivier Vandanjon François Peyret Maxime Gautier Michel Froumentin

Estimating the Degree of Compaction of Asphalt Using Proprioceptive Sensor and Dynamic Model Arnaud Delclos, Pierre-Olivier Vandanjon, François Peyret, Maxime Gautier, Michel Froumentin Pages 1-6 (2001 Proceedings of the 18th ISARC, Krakow, Poland, ISBN 9788386040117, ISSN 2413-5844) Abstract: The paper is about a new method, aiming at estimating in real time the compaction degree reached by an asphalt compactor. This method was developed at LCPC in the frame of a European project called OSYRIS (Open SYstem for Road Information Support). This method is based upon various measurements using proprioceptive sensors and a dynamic model of the machine, necessary to extract the desired information from the measured one. This information is foreseen to be profitable to the new ?intelligent? compacting system developed in the frame of the OSYRIS project. First is introduced the methodology for establishing the model, based upon a well-known industrial robots modeling method, and the model itself. Then is presented the principle of the method of estimation, based upon the correlation between the resisting force of the fresh material and its degree of compaction. Finally is described how the method was validated thanks to fullscale experiments, carried out with a real compactor, on real hot materials, in September 2000. The paper ends with the practical questions raised by the industrial implementation of the method. Keywords: dynamic model, asphalt compaction, automation, resistive effort DOI: https://doi.org/10.22260/ISARC2001/0031 Download fulltext Download BibTex Download Endnote (RIS) TeX Import to Mendeley

Degree (music)

Proprioception

10.22260/isarc2001/0031

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About the interest of Linearised Kalman Filter for low-cost GPS-based hybrid positioning system for land vehicles

HAL (Le Centre pour la Communication Scientifique Directe) (2006)

Ana Zamora David Bétaille François Peyret

GPS-based positioning systems have been widely introduced in cars and land vehicles, but, except for comfort-oriented applications such as simple navigation, the level of availability and integrity provided by these systems are far from satisfying the requirements of most of the new location-based services that are under development for road transportation. The research is very active on the topic of data fusion between GNSS and proprioceptive sensors to improve the naturally poor GPS integrity. Among the numerous fusion techniques that can be used, the well-known Extended Kalman Filter (EKF) is still the most popular, but simpler and less computation demanding techniques can also be used such as Linearised Kalman Filter (LKF). The design of a hybrid localisation system with low cost sensors (odometer and gyro) and compares the efficiency of the 2 filters, especially around long GPS outages, which represent the most constraining situations is described. Different trials have been carried out on a real circuit and illustrate the comparison. For the covering abstract see E134653.

Odometer

Sensor Fusion

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"EGNOS-ON-THE-ROAD": WHAT CAN BE EXPECTED FROM EGNOS COMPARED TO GPS FOR ROAD TRAFFIC MANAGEMENT SERVICES

François Peyret Willy Vigneau David Bétaille

Global Navigation Satellite Systems (GNSS), such as GPS, are more and more playing a key role in the development of new traffic applications and services, such as those making use of “Geofencing” techniques, electronic tolling systems being the most famous among them. Geofencing needs geopositioning and, in most of the case, geopositioning with a certain level of quality, in particular in terms of integrity for the liability-critical applications. The EGNOS system is the European Wide Area Augmentation System for GPS and has been built, upon air transport specifications, to increase the accuracy, but mainly the integrity of GPS system. The French Ministry in charge of Transport, the MEEDDM, has funded a specific study, called “EGNOS-On-The-Road”, to assess, thanks to full-scale experiments in real-life conditions, the improvements that can be expected from EGNOS for road applications, compared to GPS. The authors first describe the experimental test bench, the GNSS sensors and the data processing that have been used. Then they present the results, in terms of availability, accuracy, integrity an in terms of adequacy to the application needs, for several types of sensors: stand-alone GPS receivers or EGNOS/GPS receivers, used with internal and external antennas. The paper ends with a conclusion and high-level recommendations.

GNSS augmentation

Galileo (satellite navigation)

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A NOVEL SYSTEM USING ENHANCED DIGITAL MAPS AND WAAS FOR A LANE-LEVEL POSITIONING

François Peyret Jean Laneurit David Bétaille

The Cooperative Vehicle-Infrastructure Systems (CVIS) project of the European Commission aims to create a unified technical solution that allows all vehicles and infrastructure elements to communicate with each other in a continuous and transparent way, using a variety of media and with enhanced localization. However, accurate real-time positioning, i.e. at the lane level, is a big challenge for a lot of advanced driver assistance systems (ADAS) currently under study or development. This paper reports on the POMA (Positioning and Mapping) sub-project of the CVIS, which has been undertaken to research, develop, test, and validate advanced positioning and mapping solutions in order to provide a set of services that will run across CVIS entities, including vehicles, roadside equipment, and service centers. The authors stress that, to reach the sub-meter accuracy necessary for the lane discrimination, the best from the existing technologies and state-of-the-art data fusion algorithms must be used, keeping in mind that the final commercial solution will have to be available at an acceptable price for the customer. The authors present the choices that have been made: European Geostationary Navigation Overlay Service (EGNOS, the European equivalent of the American Wide Area Augmentation System, WAAS) for the main positioning technology, a new model of enhanced digital maps compliant with the lane-level objective (Emap model), and an innovative particle filter proposed by the LCPC team to merge sensor and map data into a unique positioning and map-matching process. The authors conclude by briefly outlining the advantages of this three-component system and describing the next level of experimental assessment that needs to be conducted on this technique of lane-level positioning using enhanced digital maps.

Merge (version control)

Sensor Fusion

Digital mapping

Map matching

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Citations (10)

Les applications autres que la localisation

Françoise Duquenne David Bétaille Pascal Willis François Peyret

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SaPPART White paper : Better use of Global Navigation Satellite Systems for safer and greener transport

HAL (Le Centre pour la Communication Scientifique Directe) (2015)

François Peyret Pierre Yves Gillieron Laura Ruotsalainen J. Engdahl

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How to improve GNSS positioning Quality of Service for demanding ITS in city environments by using 3D digital maps

François Peyret David Bétaille Miguel Ortiz Stéphan Miquel Leila Fontenay

The paper presents two different methods, so-called light and heavy, for taking into account the knowledge of the 3D environment of a vehicle in a city, where propagation phenomena can cause severe errors in positioning computation. The two methods make use of digital maps, but in a different way. The paper presents in details the methods to compare their results in terms of hidden satellites detection and applies the light method on a real test site in Nantes to demonstrate the gain in terms of accuracy of the final position.

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Positioning technology

Georeference

Hybrid positioning system

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Les systèmes coopératifs dans les transports : une approche coordonnée qui nécessite une affirmation des champs de compétence

Recherche Transports Sécurité (2013)

P.-Y. Gilliéron F. Marais François Peyret Ioannis Kaparias

Les nouvelles technologies de l'information révolutionnent l'organisation de notre société avec un impact sur le monde du travail, sur notre rapport avec les autres et sur notre mobilité. Le domaine des transports avec ses multiples challenges liés à la gestion du trafic et des infrastructures, à la diffusion d'information et au contrôle opérationnel, a intégré depuis de nombreuses années les technologies de l'informatique et des télécommunications pour répondre aux besoins croissants des autorités, des gestionnaires, des sociétés de services et des usagers. Jusqu'à récemment, les canaux d'information étaient relativement bien identifiés et s'appuyaient souvent sur une architecture centralisée, permettant une diffusion réglementée des messages aux différentes catégories d'utilisateurs.

10.4074/s0761898013002021

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