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Papers by Guillaume Saint Pierre

ecoDriver targets a 20% reduction of CO2 emissions and fuel consumption in road transport by enco... more ecoDriver targets a 20% reduction of CO2 emissions and fuel consumption in road transport by encouraging the adoption of green driving behaviour. Drivers will receive eco-driving recommendations and feedback adapted to them and to their vehicle characteristics. A range of driving profiles, powertrains IP Coordinator Oliver Carsten, University of Leeds The research leading to these results has received funding from the European Union Seventh Framework Programme under grant agreement n° 288611. FP7-ICT-2011-7: Information and Communication Technologies Low carbon multi-modal mobility and freight transport Supporting the driver in conserving energy and reducing emissions (conventional, hybrid, electrical) and vehicles types (passenger cars, vans, trucks, buses) will be tested in order to optimize the driver-powertrain-environment feedback loop. The ultimate goal is to deliver the most appropriate eco-driving advice or feedback for any given situation. This document summarizes the infor...

Nowadays, the improvement of communication technologies is widely applied to reduce energy use in... more Nowadays, the improvement of communication technologies is widely applied to reduce energy use in cars. Several ecodriving application already appeared on the market. They consist in providing a feedback to the drivers describing their ecodriving behavior and they rely on embedded sensors signals (GPS speed and acceleration). However most of these applications does not take into account upcoming events such as curves, slopes or crossings to advise the driver on the best actions to undertake to lower energy consumption. Furthermore, they do not analyze data coming from vehicle sensors. In this paper, we present an application, developed within the FP7 European project ecoDriver, that provides several innovative properties: advice according to upcoming events, a real time evaluation of the driving behavior, the analysis of past actions, an interface with OBD2 connector, ... This paper further develops the complete architecture and links between each innovative function. Future works w...

This deliverable details the proposed assessment approaches and the design of field trials for da... more This deliverable details the proposed assessment approaches and the design of field trials for data provision. Research questions and objectives of the project were divided into three major themes: user acceptance, behaviour, as well as energy use and emissions, which led to the formation of 24 hypotheses in total. A large number of Performance Indicators were identified, which will be used to validate the hypotheses. These Performance Indicators were grouped into 16 categories, covering the aforementioned three research themes. To provide empirical data for validating the hypotheses and answering the research questions, a series of field trials will be taken place in SP3. There are 12 fleets of vehicles, across 7 countries and covering a wide range of vehicle types. This deliverable outlines experimental design of the field trials, including fleet specifications, participant recruitment, route selection, test procedures, and data collection protocol etc. There are similarities but ...

Eco-driving style is widely known to induce up to 20% fuel consumption reduction, but little is k... more Eco-driving style is widely known to induce up to 20% fuel consumption reduction, but little is known about differences due to different learning methods. In order to evaluate the potential impacts of future ecological driving assistance system (EDAS) in comparison with usual techniques, a statistical approach is proposed. Two kinds of experiments are analysed in this paper: In the first one, simple advice were given to the participants, while in the second one, full courses with eco-driving experts were used. Performance indicators were derived from five commonly referred golden rules of eco-driving and used as model inputs. Different kind of statistical models are discussed, among which we choose to apply the ordinary logistic regression to assess the effects of each driving advice separately Results show that ecodriving advices are better applied after a course than just providing tips. The approach is then extended to build a generic model that can be used both to characterize a...

moving fixed-interval filter/smoother for estimation of

Les vehicules d'aujourd'hui sont bardes de capteurs necessaires au fonctionnement des sys... more Les vehicules d'aujourd'hui sont bardes de capteurs necessaires au fonctionnement des systemes embarques, notamment ceux d'assistance a la conduite. Les vehicules de demain le seront encore plus afin d'alimenter en information les algorithmes participant aux decisions de navigation. Outre leur utilite ephemere, ces informations peuvent etre recueillies et capitalisees pour alimenter la connaissance du comportement de conduite, mais aussi participer a la construction d'un bien commun numerique au service d'une meilleure securite routiere.

La societe STNA participe a la certification des equipements utilises pour la navigation aerienne... more La societe STNA participe a la certification des equipements utilises pour la navigation aerienne. Dans ce cadre la division 3R s’interesse aux equipements ILS. Ces equipements, situes au sol, sont utilises lors de l’atterrissage. Leur objectif de fiabilite est fonction de la categorie de l’equipement. Cet objectif est caracterise par une valeur de MTBO, appelee MTBO objectif. Cette valeur est deduite de l’etude par arbre de defaillance du systeme complet. La demonstration de l’atteinte de cet objectif est realisee a l’aide de tests sequentiels dont la duree doit au moins etre superieure a 1 an (pour prendre en compte les differents environnements d’exploitation). Ces tests sont decrits dans la norme MIL-HDBK-781. La mise en œuvre de cette demarche demande un temps de test juge excessif (plus de 2 ans), aussi des etudes ont ete menees pour tenter de reduire cette duree de test. La piste exploree jusqu’a present consiste a augmenter le niveau du risque du consommateur. Le STNA souhai...

L'objet de cette etude est de clarifier certains passages du rapport "DERA/WSS/WX1/CR 98... more L'objet de cette etude est de clarifier certains passages du rapport "DERA/WSS/WX1/CR 980799/2.3 ILS Certification Requirements". Nous etudions en particulier le paragraphe 3.3 "Confidence Limits for Sequential Tests" p.28-34 et le paragraphe 2 de l'appendice D, p.69-72.

In order to navigate safely, it is important to detect and to react to a potentially dangerous si... more In order to navigate safely, it is important to detect and to react to a potentially dangerous situation. Such a situation can be underlined by a judicious use of the locations and the uncertainties of both the navigating vehicle and the obstacles. We propose to build an estimation of the collision probability from the environment perception with its probabilistic modelling. The probability of collision is computed from a product of integrals of a product of Gaussians. The integrals take into account the uncertain configurations and the volume of both the vehicle and the obstacles.

Transport is a key economic sector, supporting economic development and growth, and facilitating ... more Transport is a key economic sector, supporting economic development and growth, and facilitating exchange. At the same time, motor vehicles are major emitters of gaseous and particulate pollution in urban areas. The transport industry’s quest to limit its impact on the environment and improve road safety continues to drive policy, research and development. Eco-driving is a well-established, affordable and simple behavioural change intervention, which could reduce fuel consumption up to 20%. Fully electric vehicles are predicted to be available for the mass market by 2020, however an energy efficient driving style will still be necessary for these vehicles due to a relatively poor battery performance. Furthermore Eco-driving could be applied to electric or thermal vehicles. Despite a widespread adoption of Eco-driving, its safety benefits have not been clearly established. This paper discusses research issues related to Eco-driving interventions. It covers policy, industry practice a...

Nous developpons ici la notion de niveau de confiance apres acceptation lors d'un test sequen... more Nous developpons ici la notion de niveau de confiance apres acceptation lors d'un test sequentiel du rapport des probabilites de Wald. Les notions de borne de confiance et d'intervalle de confiance apres acceptation sont bien connues. La notion de niveau de confiance apparait comme une notion duale de la precedente. Ces concepts sont illustres dans le cadre d'un probleme de fiabilite des systemes concernant la qualification de systemes d'atterrissage aux instruments ou Instrument Landing System (ILS).

The purpose of this study is to explain some parts of the DERA report DERA/WSS/WX1/CR 980799/2.3.... more The purpose of this study is to explain some parts of the DERA report DERA/WSS/WX1/CR 980799/2.3. "ILS Certification Requirements" (Ref. 2). We mainly study section 3.3 "Confidence Limits for Sequential Tests" p.28-34 and section 2 of the appendix D, p.69-72.

In this paper, we propose a functional analysis of a set of individual space-speed profiles corre... more In this paper, we propose a functional analysis of a set of individual space-speed profiles corresponding to speed as function of the distance traveled by the vehicle from an initial point. This functional analysis begins with a functional modeling of space-speed profiles and the study of mathematical properties of these functions. Then, in a first step, a smoothing procedure based on spline smoothing is developed in order to convert the raw data into functional objets and to filter out the measurement noise as efficiently as possible. It is shown that this smoothing step leads to a complex nonparametric regression problem that needs to take into account two constraints: the use of the derivative information, and a monotonicity constraint. The performance of the proposed two-step estimator (smooth, and then monotonize) is illustrated on simulation studies and a real data example. In a second step, we use a curve registration method based on landmarks alignment in order to construct ...

Within the large scale field operational test (FOT) "euroFOT" an impact assessment of a... more Within the large scale field operational test (FOT) "euroFOT" an impact assessment of advanced driver assistance systems (ADAS) is conducted. Altogether, about 1000 vehicles equipped with eight different ADAS technologies will take part in the field operational test. The focus of the analysis is an impact assessment on safety, traffic efficiency and environment. This paper will present the elaborated methodologies for conducting the safety impact assessment by means of the collected data from the field test. The safety analysis represents the most challenging part of the impact assessment, because no standardized methodologies exist. The objective of the safety analysis is to determine the change in accident risk, while driving with the ADAS functionality. Altogether two approaches have been defined for the safety impact analysis and adapted to the specific conditions in euroFOT, the event based analysis (EBA) and the aggregation based analysis (ABA). The EBA approach is a...

ecoDriver targets a 20% reduction of CO2 emissions and fuel consumption in road transport by enco... more ecoDriver targets a 20% reduction of CO2 emissions and fuel consumption in road transport by encouraging the adoption of green driving behaviour. Drivers will receive eco-driving recommendations and feedback adapted to them and to their vehicle characteristics. A range of driving profiles, powertrains IP Coordinator Oliver Carsten, University of Leeds The research leading to these results has received funding from the European Union Seventh Framework Programme under grant agreement n° 288611. FP7-ICT-2011-7: Information and Communication Technologies Low carbon multi-modal mobility and freight transport Supporting the driver in conserving energy and reducing emissions (conventional, hybrid, electrical) and vehicles types (passenger cars, vans, trucks, buses) will be tested in order to optimize the driver-powertrain-environment feedback loop. The ultimate goal is to deliver the most appropriate eco-driving advice or feedback for any given situation. This document summarizes the infor...

Nowadays, the improvement of communication technologies is widely applied to reduce energy use in... more Nowadays, the improvement of communication technologies is widely applied to reduce energy use in cars. Several ecodriving application already appeared on the market. They consist in providing a feedback to the drivers describing their ecodriving behavior and they rely on embedded sensors signals (GPS speed and acceleration). However most of these applications does not take into account upcoming events such as curves, slopes or crossings to advise the driver on the best actions to undertake to lower energy consumption. Furthermore, they do not analyze data coming from vehicle sensors. In this paper, we present an application, developed within the FP7 European project ecoDriver, that provides several innovative properties: advice according to upcoming events, a real time evaluation of the driving behavior, the analysis of past actions, an interface with OBD2 connector, ... This paper further develops the complete architecture and links between each innovative function. Future works w...

This deliverable details the proposed assessment approaches and the design of field trials for da... more This deliverable details the proposed assessment approaches and the design of field trials for data provision. Research questions and objectives of the project were divided into three major themes: user acceptance, behaviour, as well as energy use and emissions, which led to the formation of 24 hypotheses in total. A large number of Performance Indicators were identified, which will be used to validate the hypotheses. These Performance Indicators were grouped into 16 categories, covering the aforementioned three research themes. To provide empirical data for validating the hypotheses and answering the research questions, a series of field trials will be taken place in SP3. There are 12 fleets of vehicles, across 7 countries and covering a wide range of vehicle types. This deliverable outlines experimental design of the field trials, including fleet specifications, participant recruitment, route selection, test procedures, and data collection protocol etc. There are similarities but ...

Eco-driving style is widely known to induce up to 20% fuel consumption reduction, but little is k... more Eco-driving style is widely known to induce up to 20% fuel consumption reduction, but little is known about differences due to different learning methods. In order to evaluate the potential impacts of future ecological driving assistance system (EDAS) in comparison with usual techniques, a statistical approach is proposed. Two kinds of experiments are analysed in this paper: In the first one, simple advice were given to the participants, while in the second one, full courses with eco-driving experts were used. Performance indicators were derived from five commonly referred golden rules of eco-driving and used as model inputs. Different kind of statistical models are discussed, among which we choose to apply the ordinary logistic regression to assess the effects of each driving advice separately Results show that ecodriving advices are better applied after a course than just providing tips. The approach is then extended to build a generic model that can be used both to characterize a...

moving fixed-interval filter/smoother for estimation of

Les vehicules d'aujourd'hui sont bardes de capteurs necessaires au fonctionnement des sys... more Les vehicules d'aujourd'hui sont bardes de capteurs necessaires au fonctionnement des systemes embarques, notamment ceux d'assistance a la conduite. Les vehicules de demain le seront encore plus afin d'alimenter en information les algorithmes participant aux decisions de navigation. Outre leur utilite ephemere, ces informations peuvent etre recueillies et capitalisees pour alimenter la connaissance du comportement de conduite, mais aussi participer a la construction d'un bien commun numerique au service d'une meilleure securite routiere.

La societe STNA participe a la certification des equipements utilises pour la navigation aerienne... more La societe STNA participe a la certification des equipements utilises pour la navigation aerienne. Dans ce cadre la division 3R s’interesse aux equipements ILS. Ces equipements, situes au sol, sont utilises lors de l’atterrissage. Leur objectif de fiabilite est fonction de la categorie de l’equipement. Cet objectif est caracterise par une valeur de MTBO, appelee MTBO objectif. Cette valeur est deduite de l’etude par arbre de defaillance du systeme complet. La demonstration de l’atteinte de cet objectif est realisee a l’aide de tests sequentiels dont la duree doit au moins etre superieure a 1 an (pour prendre en compte les differents environnements d’exploitation). Ces tests sont decrits dans la norme MIL-HDBK-781. La mise en œuvre de cette demarche demande un temps de test juge excessif (plus de 2 ans), aussi des etudes ont ete menees pour tenter de reduire cette duree de test. La piste exploree jusqu’a present consiste a augmenter le niveau du risque du consommateur. Le STNA souhai...

L'objet de cette etude est de clarifier certains passages du rapport "DERA/WSS/WX1/CR 98... more L'objet de cette etude est de clarifier certains passages du rapport "DERA/WSS/WX1/CR 980799/2.3 ILS Certification Requirements". Nous etudions en particulier le paragraphe 3.3 "Confidence Limits for Sequential Tests" p.28-34 et le paragraphe 2 de l'appendice D, p.69-72.

In order to navigate safely, it is important to detect and to react to a potentially dangerous si... more In order to navigate safely, it is important to detect and to react to a potentially dangerous situation. Such a situation can be underlined by a judicious use of the locations and the uncertainties of both the navigating vehicle and the obstacles. We propose to build an estimation of the collision probability from the environment perception with its probabilistic modelling. The probability of collision is computed from a product of integrals of a product of Gaussians. The integrals take into account the uncertain configurations and the volume of both the vehicle and the obstacles.

Transport is a key economic sector, supporting economic development and growth, and facilitating ... more Transport is a key economic sector, supporting economic development and growth, and facilitating exchange. At the same time, motor vehicles are major emitters of gaseous and particulate pollution in urban areas. The transport industry’s quest to limit its impact on the environment and improve road safety continues to drive policy, research and development. Eco-driving is a well-established, affordable and simple behavioural change intervention, which could reduce fuel consumption up to 20%. Fully electric vehicles are predicted to be available for the mass market by 2020, however an energy efficient driving style will still be necessary for these vehicles due to a relatively poor battery performance. Furthermore Eco-driving could be applied to electric or thermal vehicles. Despite a widespread adoption of Eco-driving, its safety benefits have not been clearly established. This paper discusses research issues related to Eco-driving interventions. It covers policy, industry practice a...

Nous developpons ici la notion de niveau de confiance apres acceptation lors d'un test sequen... more Nous developpons ici la notion de niveau de confiance apres acceptation lors d'un test sequentiel du rapport des probabilites de Wald. Les notions de borne de confiance et d'intervalle de confiance apres acceptation sont bien connues. La notion de niveau de confiance apparait comme une notion duale de la precedente. Ces concepts sont illustres dans le cadre d'un probleme de fiabilite des systemes concernant la qualification de systemes d'atterrissage aux instruments ou Instrument Landing System (ILS).

The purpose of this study is to explain some parts of the DERA report DERA/WSS/WX1/CR 980799/2.3.... more The purpose of this study is to explain some parts of the DERA report DERA/WSS/WX1/CR 980799/2.3. "ILS Certification Requirements" (Ref. 2). We mainly study section 3.3 "Confidence Limits for Sequential Tests" p.28-34 and section 2 of the appendix D, p.69-72.

In this paper, we propose a functional analysis of a set of individual space-speed profiles corre... more In this paper, we propose a functional analysis of a set of individual space-speed profiles corresponding to speed as function of the distance traveled by the vehicle from an initial point. This functional analysis begins with a functional modeling of space-speed profiles and the study of mathematical properties of these functions. Then, in a first step, a smoothing procedure based on spline smoothing is developed in order to convert the raw data into functional objets and to filter out the measurement noise as efficiently as possible. It is shown that this smoothing step leads to a complex nonparametric regression problem that needs to take into account two constraints: the use of the derivative information, and a monotonicity constraint. The performance of the proposed two-step estimator (smooth, and then monotonize) is illustrated on simulation studies and a real data example. In a second step, we use a curve registration method based on landmarks alignment in order to construct ...

Within the large scale field operational test (FOT) "euroFOT" an impact assessment of a... more Within the large scale field operational test (FOT) "euroFOT" an impact assessment of advanced driver assistance systems (ADAS) is conducted. Altogether, about 1000 vehicles equipped with eight different ADAS technologies will take part in the field operational test. The focus of the analysis is an impact assessment on safety, traffic efficiency and environment. This paper will present the elaborated methodologies for conducting the safety impact assessment by means of the collected data from the field test. The safety analysis represents the most challenging part of the impact assessment, because no standardized methodologies exist. The objective of the safety analysis is to determine the change in accident risk, while driving with the ADAS functionality. Altogether two approaches have been defined for the safety impact analysis and adapted to the specific conditions in euroFOT, the event based analysis (EBA) and the aggregation based analysis (ABA). The EBA approach is a...