Posts from 2019

Context Presentation

The development of self-driving cars is increasing with 5G techniques. One of the biggest challenges posed by this domain is to protect pedestrians and to decrease accidents by detecting them before they occur. That’s why we need to decrease latency, improve reliability, optimize resource allocation and maintain connectivity… In this regard, we have proposed to preview vehicular and pedestrian traffic and send an alert message to warn them of collision risks. To achieve our goals, we started by proposing a network architecture based on an SDN approach, cell-less configuration, and decentralized computing nodes... Then we noticed that if all vehicles and pedestrians are going to communicate with the controller to send their position, the OpenFlow signaling is going to increase in the controller. So, we have simulated the up-link traffic and we have shown the interest of relieving the overload on the controller by sending position messages just in need. We developed an algorithm that estimate the time interval without future collision risks and decide the frequency of sending position messages in the up-link. Concerning the future work, we have to validate the obtained results with simulation.

Figure 1: Proposed SDN architecture

Scientific Goals

- Generate alert messages under low latency- Improve fiability and throughput- Optimize ressources allocation

Keywords

neOCampus, file, presentation, innovation, VANET, 5G, SDN …

Contacts

Chaima.Zoghlami@irit.fr, Rahim.Kacimi@irit.fr, Riadh.dhaou@irit.fr

Context Presentation

The current digital transformation requires the creation of autonomous applications that can be adapted to complex, dynamic, heterogeneous and unpredictable environments. These systems must be equipped with proactive learning capabilities. To this end, Self-Adaptive Multi-Agent principle allows the decentralization and self-observation of the learning process. Each knowledge granule is an autonomous agent that cooperates with its neighbors to improve learning from exogenous and endogenous feedbacks. Detecting and solving concurrences, conflicts and incompetencies leads to active endogenous learning.This work on an adaptive decentralized learning mechanism will be applied on application domains such as robotics, autonomous vehicles and smart cities.

Figure 1: « Schema of the Learning

Figure 2: « Implementation Example Multi-Agent System » on an Industrial Robot »

Scientific Goals

- Design a Self-Learning System

- Lifelong and Endogenous Learning

- Genericity and Scalability

Keywords

Self-Adaptive Learning, Endogenous Learning, Adaptive Multi-Agent Systems, Artificial Intelligence

Contacts

bruno.dato@irit.frfrederic.migeon@irit.fr marie-pierre.gleizes@irit.fr

Context Presentation

Mobility in cities is a crucial question to improve services offered to users and to decrease pollution. Traffic simulation is an interesting tool for decision-makers for city planning. Decision relevance depends on the realism of the simulation. To ensure that, we suppose that we have a map of the terrain (road topology, buildings…) and observation points that provide traffic information (throughput, direction…). They are in limited number and do not cover all the map.This internship focuses on generating car flows on the whole road network using adaptive multi-agent systems. For that, the system determines the location, speed and direction for each vehicle based on its neighborhood. The behavior of each vehicle self-adjusts to match, at the macro-level, traffic information provided by all observation points.

Figure 1: Example of traffic simulationDynameq © INRO

Scientific Goals

- Self-calibration of simulation parameters for realistic traffic flow generation

- Self-adaptation of the simulation to handle traffic dynamics

Keywords

realistic traffic generation, multi-agent simulation, self-adaptation, cooperation

Contacts

damien.vergnet@irit.frelsy.kaddoum@irit.frmarie-pierre.gleizes@irit.fr

Context Presentation

Only a few fixed stations monitor air pollution at the urban scale, where it shows huge variation in space and time. However, the advent of low cost and miniaturized sensors paves the way to mobile sensor networks and crowdsensing systems. Bikes as a carrying platform seems promising: 1) distance tracks are longer than walking, 2) their embedded generator (dynamo) allows to create an autonomous energy system, 3) they do not pollute (and therefore do not distort data collection) and can both cover road network and pedestrian areas 4) human-carried measurement reinforces spatial coverage of the most frequented, hence the most important, areas. We instantiate it as CLUE: Cycle-based Laboratory of Urban Evolutions.

Auto-calibration of the sensor fleet and algorithms tolerant to erroneous measurements thanks to data density are two ways to face the low quality of the sensors (low accuracy, time drifting). Another challenge is keeping user privacy while sharing data without compromising their interpretability (for air pollution, human mobility).

Figure: CLUE embedded system

Scientific Goals

- equip a fleet of bicycles with a set of sensors

- collect information on mobility and air pollution

- merge the data of several sensors in a real environment and validate predictive models of pollutants used in aerology

Keywords

Distributed sensing system, human-centered measurement tool, big data, air pollution

Contacts

Christophe Bertero <christophe.bertero@laas.fr>Jean-Francois Léon <jean-francois.leon@aero.obs-mip.fr>Matthieu Roy <matthieu.roy@laas.fr>, Gilles Tredan <gilles.tredan@laas.fr>

Context Presentation

A Smart Clean Garden (SCG), is a planted filter recognised as nature based solution for water treatment of domestic water. Inspired from water quality regulation of natural rivers, a SCG shelters an enhanced biodiversity for encreased capacity of sewage in limited area of green cities. The addition of IoT as environmental sensors (moisture, NO3, Ph, conductivity,…) allows to survey and to better understand the complex system functioning inside the filter. Collected data will feed regular deterministic modeling and IA to describe the pollutant reduction process.

Figure 1 : Planted filters with 2 granulometric levels that already exist on USTH campus at Hanoi, made by Epurteck as the first SCG pilote for demonstration and logo of the project

Scientific Goals

- To demonstrate that it is possible to treat a part of domestic water of UT3 campus and producing recycled water for gardening and watering the green area of the campus

- To test the capacity building of the water purification in the planted filter by using IoT survey and environmental data modelling ?

- To identify what are the main drivers that lead to the pollutant removial in this complex system made with sediment, water , biodiversity as a micro-organisms, macro-invertebrates and plants communities, nutrients, natural organic mater and antropic molecules (fertilisers, persistant organic pollutant, medical residus, etc…

Keywords

neOCampus, smart clean, garden, water, intelligent reuse, innovation,

Contacts

Magali Gerino (magali.gerino@univ-tlse3.fr) ; Léo Garcia (leo.garcia@iut-tlse3.fr) ; Dan Tan Costa ( EPURTECK, dan@epurtek.fr)

Au cours de cette journée, nous avons partagé les projets de smart campus qui sont soutenus par les universités de La Rochelle, de Bordeaux, de Paris Est et de Toulouse. Nous avons pu découvrir les différents axes de développement choisis par les établissements ainsi que les problématiques rencontrées mais aussi les partenaires (industriels ou non) investis.

Les participants étaient :

Marwane REZZOUKI - Université de Bordeaux

Francis ALLARD - Université de La Rochelle

Patrice JOUBERT - Université de La Rochelle

Pauline BLONDE - Université de Paris-Est

Mathieu DELORME - Université de Paris-Est

Nafissa BOUTKHIL - Université de Paris-Est

Marie-Pierre GLEIZES - Université de Toulouse III

Context Presentation

With the environmental issues and the new ecological considerations, one of the challenge is the creation of sustainable electric grid to supply the demand. With this context, we observe the deployment of decentralized Low Voltage DC Micro-Grid (LVDC-MG) in building, with high penetration of Renewable Energy Sources (RES) and Energy Storage Systems (ESS). The aim of this PhD thesis is to contribute in this field by designing an LVDC MG in the ADREAM Building integrated PV (BiPV), at LAAS-CNRS, TOULOUSE. The main difficulties is to combined the ESS behavior and aging studies with a global system approach in order to proposed a sizing method and an energy management strategy optimized and simple to implemented for electrical research community.

Figure 1: electrical synoptic of the LVDC MG study

Scientific Goals

- Study the impacts of BiPV and DC building loads power profiles on ESS behavior and lifecycle

- Proposed a methodology, with a systemic approach, to size the PV and the ESS

- Compared multiple sizing and energy management strategy in order to design the optimal LVDC MG to supply the ADREAM BiPV lightning network

- Compared the performances of Lead acid batteries and Lithium-ions batteries in our case study

Keywords

Energy Storage System, Low Voltage DC Micro Grid, Building integrated PV, Lead-acid batteries, ageing mechanisms

Contacts

PhD student: mgaetani@laas.fr / Supervisors: alonsoc@laas.fr & jammes@laas.fr

Context Presentation

To mitigate the global worming related to the human activities’ greenhouse gas emissions, the so far industrial model has to be profoundly rethought. In the construction sector, ecofriendly constructions materials are gaining increasing interest as alternative to cement concrete. Unfired earth material is thus promoted thanks to its accessibility, its social, economic, and hygrothermal benefits. In the project neOCampus, our work is conducted at the Laboratory of Materials and Durability of Constructions (LMDC). The main goal is to develop unfired earth-based materials for use in potential reconstructions in the Université Paul Sabatier’s campus. Two main challenges are addressed: achieve sufficient mechanical strengths and mitigate risks related to potential water damages. To that purpose, soils from Toulouse area are stabilized with mineral binders (cement and hydrated lime) on the one hand and with organic binders (biopolymers from plants’ and animals’ byproducts) on the other hand. Unlike the modern industrial practices, a few amount of the mineral binders are used to limit their CO2 footprint. Various organic products are tested to identify the promising candidates for earth stabilization.

Figure 1: Specimens for the performances (mechanical and hygrothermal) tests

Scientific Goals

- Achieve sufficient mechanical strengths and water resistance,

- Use environmentally friendly stabilization with organic binders and mineral binders,

Keywords

Construction materials, unfired earth, water resistance, mechanical strengths, ecofriendly stabilization.

Contacts

Kouka Amed Jérémy OUEDRAOGO kouedrao@insa-toulouse.fr LMDCJean-Emmanuel AUBERT jean-emmanuel.aubert@univ-tlse3.fr LMDCGilles ESCADEILLAS gilles.escadeillas@univ-tlse3.fr LMDCChristelle TRIBOUT christelle.tribout@univ-tlse3.fr LMDC

Context Presentation

In previous decades, environmental impact control through lifecycle analysis has become a hot topic in various fields. In some countries, such as France, the key figures for energy show that the building sector alone consumes around 45% of the energy produced each year. From this last observation emerged the idea to improve the methods hitherto employed in this field, in particular those related to the exchange of information between the various stakeholders involved throughout the lifecycle of a building. Information is particularly crucial for conducting various studies around the building; for instance, the assessment of the environmental impact of the latter. Concerning information exchange issues, the creation of open standards such as Industry Foundation Classes (IFC) or CityGML, but also semantic web technologies have been widely used to try to overcome it with some success elsewhere. Another striking issue is the heterogeneity between construction product databases. What would be particularly interesting is to know the environmental impact of a building at early phases of its lifecycle. However, there are a number of problems that still do not have solutions. This includes associating Building Information Modelling (BIM) and semantic web technologies with environmental databases to increase the flexibility needed to assess the building's environmental impact throughout its lifecycle.

Figure 1: MINDOC methodology process

Scientific Goals

- Study how information exchange is made within experts during a building lifecycle in order to figure out interoperability gaps ;

- Fill some of the encountered gaps by mean of formalization of building information.

- Combined with the formalization of environmental data on construction products, the latter will enable the introduction of product data at an early stages of the building lifecycle.

Keywords

Knowledge Modeling & Semantic Reasoning - Merging Ontologies - Decision Support - Building Information Modeling (BIM) - Environmental Databases.

Contacts

justine-flore.tchouanguem-djuedja@enit.fr, Bernard.Kamsu-Foguem@enit.fr, camille.magniont@iut-tarbes.fr, mkarray@enit.fr, fabanda@brookes.ac.uk.

Context Presentation

The number of sensors in buildings is constantly increasing, thanks to more accessible costs and the obvious interest of their use for optimized management. In this thesis we are interested in the use of data from these sensors to detect anomalies in buildings. These data, which are very numerous, can be of unknown and heterogeneous types.An anomaly is defined as unexpected and undesirable behaviour in a system and may depend on the context. In order to be able to deploy an anomaly detection system as widely as possible, it is necessary to create a decision support tool for energy experts. To address these issues, a system based on cooperative multi-agent systems implementing AMAS theory is being developed that allows anomalies to be detected by supervised learning. The anomaly detection system must take advantage of the feedback from one or more experts who label certain instances as anomalies or non-anomalies. These feedback are used for learning. The system we develop allows the addition or removal of new sensors without interrupting the detection of anomalies.

The system classifies situations

Scientific Goals

- Improve energy efficiency

- Detect anomalies in real time

- Learn continuously from the expert feedback

Keywords

Multi-Agent Systems, Smart Buildings, Internet of Things, Supervised Learning, Anomaly Detection

Contacts

Maxime.houssin@irit.fr