226 research outputs found
Integration of Car-2-Car Communication as a Virtual Sensor in Automotive Sensor Fusion for Advanced Driver Assistance Systems
Advanced driver assistance systems (ADAS) require a comprehensive and accurate situation model. Often in-vehicle sensors do not provide sufficient quality and quantity of information to fulfill the demanding requirements. Car-2-Car communication can be seen as an adaptive sensor that provides additional information regularly but also on demand. Due to the fact that Car-2-Car communication strongly depends on the penetration rate, we argue for a seamless integration of Car-2-Car communication as an additional sensor in automotive sensor fusion. With increasing penetration rate the sensor fusion will significantly benefit and eventually unfold its full potential. Due to the fundamentally different measuring principles of in-vehicle sensors and information provided by Car-2-Car communication, redundancy and complementarity can be leveraged to a great extent, thus, increasing accuracy, reliability and robustness of the situation assessment. In addition to a detailed description of the fusion algorithm this paper outlines DLR’s system architecture for ADAS and an enhanced ACC as an application example to show the potential of our approach
Cooperative Situation Awareness in Transportation
Intelligent Transportation Systems (ITS) became a fast moving eld of research in the last decades, in particular in the context of continuously growing mobility and a high employment of resources starting from energy and material consumption to travel time and nally the human life. As it has already been experienced in other application areas, the introduction of communications technology is able to bring a revolutionary change in structures and behaviors long-believed to be carved in stone.
The main idea behind this thesis is the usage of information not as a mere placeholder, e.g. a eld in a static message, but actively utilizing its content and dependencies. This requires an estimation of the actual worth of a single piece of information for the entity itself and the entities which are in communication range. This worth has to be the essential driver for the cooperative situation estimation. The active utilization of information and its cooperative dissemination provides the entities the opportunity to become situation aware and detect hazardous or inefficient situations early in advance.
Since information always has a degree of uncertainty which is inherent to information in the real-world problem domain, as we are confronted with in ITS, probabilistic methods will be applied to model situation-relevant information. Conditional probability distributions in state transition models make for the evolvement of the situational information with the progress of time and handle causal dependencies between situational information. Together with a utility-based decision-making process dynamic probabilistic causal decision networks provide the functionality to select optimal actions given sequences of
inaccurate and incomplete evidences.
This thesis provides concepts and strategies that push forward the exploitation of information in a cooperative way within a probabilistic framework that allows to make various kinds of decisions with maximum utility. For the evaluation of the proposed concepts, the exemplary application Cooperative Adaptive Cruise Control (CACC) has been implemented on the basis of a particle lter which is used for the situation estimation. Initial simulations provided promising results and hence constitute a solid basis for future work in the eld of Cooperative Situation Awareness in Transportation
Novartis School Lab: Bringing Young People Closer to the World of Research and Discovering the Excitement of Science
The Novartis School Lab (http://www.novartis.ch/schullabor) is an institution with an old tradition. The School Lab reaches about 5000 students through internal courses and an additional 5000 children at public science events where they can enjoy hands-on science in disciplines of biomedical
research. The subjects range from chemistry, physics, molecular biology and genetics to toxicology and medical topics. The Novartis School Lab offers a variety of activities for youngsters aged 10-20 ranging from lab courses for school classes, continuing education for teachers and development
of teaching kits, support for individual research projects to outreach for public science events. Innovation and adaptation to changes of current needs are essential aspects for the Novartis School Lab. Ongoing activities to shape the Novartis Biomedical Learning Lab include design of new
teaching experiments, exploration into additional disciplines of biomedical science and the creation of a fascinating School Lab of the future
Investigating the Efficiency of ITS Cooperative Systems for a Better Use of Urban Transport Infrastructures: The iTETRIS Simulation Platform
The use of cooperative ITS communication systems,
supporting driving through the dynamic exchange of Vehicle-to-
Vehicle (V2V) and Vehicle-to-Infrastructure (V2I) messages, is a
potential candidate to improve the economical and societal
welfare. The application of such systems for novel cooperative
traffic management strategies can introduce a lot of beneficial
effects not only for road safety, but also for the economy related
to transportation systems and the environmental impact. Despite
this apparent set of promising features, City Road Authorities,
which hold a key-role in determining the final adoption of such
systems, still look at cooperative systems without sharing a clear
opinion. This is mainly due to the current lack of definitive and
solid evidences of the effectiveness of such systems when applied
in the real world. In order to fill this gap and let Road
Authorities estimate the usefulness of such technologies in
achieving the objectives dictated by cities’ traffic management
policies, the EU consortium iTETRIS is developing a simulation
platform for large scale testing of traffic management solutions
making use of cooperative ITS systems. Thanks to its own
distinguishing features, iTETRIS aims at becoming a good
supporting tool for Road Authorities to implement preliminary
tests on the effectiveness of ITS solutions prior to investing
money for the physical deployment of the communication
infrastructures allowing their functioning
Formalising the pi-calculus using nominal logic
We formalise the pi-calculus using the nominal datatype package, based on
ideas from the nominal logic by Pitts et al., and demonstrate an implementation
in Isabelle/HOL. The purpose is to derive powerful induction rules for the
semantics in order to conduct machine checkable proofs, closely following the
intuitive arguments found in manual proofs. In this way we have covered many of
the standard theorems of bisimulation equivalence and congruence, both late and
early, and both strong and weak in a uniform manner. We thus provide one of the
most extensive formalisations of a process calculus ever done inside a theorem
prover.
A significant gain in our formulation is that agents are identified up to
alpha-equivalence, thereby greatly reducing the arguments about bound names.
This is a normal strategy for manual proofs about the pi-calculus, but that
kind of hand waving has previously been difficult to incorporate smoothly in an
interactive theorem prover. We show how the nominal logic formalism and its
support in Isabelle accomplishes this and thus significantly reduces the tedium
of conducting completely formal proofs. This improves on previous work using
weak higher order abstract syntax since we do not need extra assumptions to
filter out exotic terms and can keep all arguments within a familiar
first-order logic.Comment: 36 pages, 3 figure
Competence oriented study in engineering education: examples from the practicing programme
The interdisciplinary and agile processing of projects in teams increasingly characterizes the engineer’s work. Problem-solving skills, creativity, entrepreneurship, and initiative, as well as the ability to engage in dialog and conflict resolution, are relevant competencies for this. All engineering students at TU Ilmenau can work on complex interdisciplinary projects in teams (practicING projects) right from the start of their studies. Participants in these practicING projects can also experience significant steps, aspects, and system engineering methods for demand-oriented products. The paper describes the motivation, the learning goals and methodology of practicING projects from the perspective of the supervising teachers and the participating students. Two examples illustrate the potential of the practicING concept: the projects "Wind turbine model with digital twin" and "CrossLab/ experimental ball drop test environment". Experiences in implementing the practicING projects to date are presented, as well as limitations and possibilities for further development
Investigating the Efficiency of ITS Cooperative Systems for a Better Use of Urban Transport Infrastructures: The iTETRIS Simulation Platform
The use of cooperative ITS communication systems, supporting driving through the dynamic exchange of Vehicle-to- Vehicle (V2V) and Vehicle-to-Infrastructure (V2I) messages, is a potential candidate to improve the economical and societal welfare. The application of such systems for novel cooperative traffic management strategies can introduce a lot of beneficial effects not only for road safety, but also for the economy related to transportation systems and the environmental impact. Despite this apparent set of promising features, City Road Authorities, which hold a key-role in determining the final adoption of such systems, still look at cooperative systems without sharing a clear opinion. This is mainly due to the current lack of definitive and solid evidences of the effectiveness of such systems when applied in the real world. In order to fill this gap and let Road Authorities estimate the usefulness of such technologies in achieving the objectives dictated by cities’ traffic management policies, the EU consortium iTETRIS is developing a simulation platform for large scale testing of traffic management solutions making use of cooperative ITS systems. Thanks to its own distinguishing features, iTETRIS aims at becoming a good supporting tool for Road Authorities to implement preliminary tests on the effectiveness of ITS solutions prior to investing money for the physical deployment of the communication infrastructures allowing their functioning
- …