Erasmushogeschool Brussel

Brussels, Belgium

Erasmushogeschool Brussel

Brussels, Belgium
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Agency: European Commission | Branch: FP7 | Program: CP | Phase: ICT-2009.6.1 | Award Amount: 9.24M | Year: 2010

For E.V.s, the development of an interactive electric energy ICT & Service interface between the vehicle and its electricity infrastructure is of utmost importance, next to creating effective business models.\n\nThe rationale of this project is to contribute significantly to neutralize the drivers range anxiety and encourage the customers to embark the fully electric road transport.\nTherefore the objective of ELVIRE is to develop an on-board electric energy communication & service platform for realistic use-cases including the relevant external communication and services. For this purpose the following actions will be taken:\n\tselect representative use-cases according to realistic scenarios and business-models\n\tidentify & develop those off-board ICT & services needed to comply with the use cases\n\tdevelop Prototypes for the on-board Communication and E-energy service unit\n\tverify all integrated sub-systems on prototype level and demonstrate the proof of concept.\n\nGreat emphasis is placed on the openness of the Electricity-service platform granting access to multiple players maintaining the customers choice.\n\nELVIRE is structured into 5 work packages, with:\n\tWP 1000\tcovering the project administration, legal aspects and dissemination and the inclusion of complementary RTD\n\tWP 2000\tdefines relevant mission data for the use case in consideration of technical and commercial aspects\n\tWP 3000\taddresses the external E-Service provision and the necessary E-IC instruments\n\tWP 4000 \tdevelops the e-communication device and the OEM-neutral universal on-board E-communication and service platform\n\tWP 5000 conducts integration and usability tests and the overall system validation.\n\nELVIRE will become crucial to future electric road transport by closing the gap between vehicle technology and the off-board E-ICT and service environment. ELVIRE will have strong impact by strengthening competitiveness, energy efficiency and reduce emissions and improve by promoting electrification.

Schoukens J.,Belgian National Fund for Scientific Research | Schoukens J.,Vrije Universiteit Brussel | Vaes M.,Erasmushogeschool Brussel | Pintelon R.,University of Warwick
IEEE Control Systems | Year: 2016

Linear system identification [1]-[4] is a basic step in modern control design approaches. Starting from experimental data, a linear dynamic time-invariant model is identified to describe the relationship between the reference signal and the output of the system. At the same time, the power spectrum of the unmodeled disturbances is identified to generate uncertainty bounds on the estimated model. © 2016 IEEE.

Braeken A.,Erasmushogeschool Brussel | De La Piedro A.,Erasmushogeschool Brussel | Wouters K.,K.U. Leuven ESAT SCD COSIC and IBBT
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2012

This paper proposes protocols for secure logging of events in sensor networks by gathering in a secure and reliable way all information at one central point. Not only the chronological order of logged events sent by the different sensors is guaranteed. Also modification, deletion, and addition of other data is made impossible. As proof of concept, we have designed a prototype of the gateway sensor on an FPGA platform. © 2012 Springer-Verlag.

Devriendt C.,Erasmushogeschool Brussel | De Troyer T.,Erasmushogeschool Brussel | De Sitter G.,Vrije Universiteit Brussel | Guillaume P.,Erasmushogeschool Brussel
Shock and Vibration | Year: 2012

During the recent years several new tools have been introduced by the Vrije Universiteit Brussel in the field of Operational Modal Analysis (OMA) such as the transmissibility based approach and the the frequency-domain OMAX concept. One advantage of the transmissibility based approach is that the ambient forces may be coloured (non-white), if they are fully correlated. The main advantage of the OMAX concept is the fact that it combines the advantages of Operational and Experimental Modal Analysis: ambient (unknown) forces as well as artificial (known) forces are processed simultaneously resulting in improved modal parameters. In this paper, the transmissibility based output-only approach is combined with the input/output OMAX concept. This results in a new methodology in the field of operational modal analysis allowing the estimation of (scaled) modal parameters in the presence of arbitrary ambient (unknown) forces and artificial (known) forces. © 2012-IOS Press and the authors. All rights reserved.

De La Piedra A.,Vrije Universiteit Brussel | Braeken A.,Erasmushogeschool Brussel | Touhafi A.,Vrije Universiteit Brussel
IEEE EuroCon 2013 | Year: 2013

In the last years, a number of research sensor nodes based on the combination of low-power microcontrollers and FPGAs have been proposed. In these platforms, the FPGAs serve as accelerators of complex algorithms, making it possible to process a vast amount of sensing data in real time. In medical applications that rely on sensors, both privacy and security are of utmost importance. However, the execution of cryptographic primitives on nodes solely based upon microcontrollers clocked at a low frequency can affect the overall power consumption of the platform. In this manuscript, we present the design of a cryptographic accelerator based on FPGA and aimed to be coupled to a microcontroller. It provides the most secure implementation of the IEEE 802.15.4 security suite together with an Elliptic Curve Cryptography (ECC) engine to perform key establishment. Furthermore, we provide a comparison on performance and energy consumption of cryptographic primitives in commercial nodes and in the proposed design. Our results suggest that the controlled execution of cryptographic algorithms on FPGAs clocked at a low frequency improves the performance and energy consumption of the state-of-the-art implementations based on the MICA and Tmote nodes. However, our results also reflect two inherent limitations of this type of design: the very nature of the bus logic can undermine the expected improvement on performance as well as the communication link between the microcontroller and the FPGA can make the platform vulnerable to physical attacks. © 2013 IEEE.

De La Piedra A.,Vrije Universiteit Brussel | Touhafi A.,Vrije Universiteit Brussel | Braeken A.,Erasmushogeschool Brussel
2013 23rd International Conference on Field Programmable Logic and Applications, FPL 2013 - Proceedings | Year: 2013

In this manuscript, we have explored how the use of DSP blocks in the implementation of two authenticated-encryption modes of AES can optimize the PAR figures. Our results reflect that a 20.98 % reduction in slice utilization can be achieved at a throughput higher than 25 Mbps (12 MHz) in the Artix-7 XC7A200TL FPGA. © 2013 IEEE.

De La Piedra A.,Vrije Universiteit Brussel | Braeken A.,Erasmushogeschool Brussel | Touhafi A.,Vrije Universiteit Brussel
2013 IEEE 15th International Conference on e-Health Networking, Applications and Services, Healthcom 2013 | Year: 2013

Field programmable gate arrays (FPGAs) are generally used in sensor networks for accelerating complex algorithms, either at node or gateway level. The apparition of FPGAs in the market equipped with special blocks for performing logic operations at high-speed and reduced utilization of the platform fabric, allows the implementation of a number of algorithms mainly based on these embedded resources. In this manuscript, we have focused on the Xilinx Artix-7 platform. We have evaluated how replacing logic functions in the implementation of GF(2m) arithmetics and lightweight block ciphers can reduce the area and, consequently, the cost of the platform. Moreover, we provide an update of an IEEE 802.15.4 accelerator extended with key negotiation capabilities described in previous work. Our results suggest that FPGAs can be employed for developing infrastructure for Wireless Medical Sensor Networks (WMSNs) in cases where encrypting and authenticating a large stream of sensed data is required. In that case, traditional sensor nodes, typically based on microcontrollers and clocked at low frequencies can be ill-suited for real-time applications. Moreover, the fact that large intervals of time are required for executing both encryption and authentication schemes can impact the battery lifetime of the node in comparison of utilizing a separate coprocessor (e.g. based on FPGA) that can be turned on and off when required. Finally, promising results in terms of cost and power consumption are expected when the smallest platforms of the Artix-7 series are available. © 2013 IEEE.

Runacres M.C.,Erasmushogeschool Brussel | Runacres M.C.,Vrije Universiteit Brussel | De Troyer T.,Erasmushogeschool Brussel | De Troyer T.,Vrije Universiteit Brussel | And 2 more authors.
Journal of Fluids and Structures | Year: 2013

A classical problem in vortex-induced vibration is to know the flow field past an oscillating cylinder. In this paper we use system theory to identify the oscillatory behaviour of a circular cylinder from flow variables in the wake. We use numerical simulations (CFD) of the flow past a cylinder oscillating in the cross-flow direction at different oscillation frequencies and amplitudes to construct a transfer function that relates the displacement of the cylinder and the resulting flow field. This transfer function can then be inverted to 'predict' the displacement of the cylinder given the flow field (as determined by simulations or measurements). We investigate this technique in the so-called lock-in region, where the vortex shedding frequency is synchronised with the oscillation frequency of the cylinder. © 2013 Elsevier Ltd.

de la Piedra A.,Vrije Universiteit Brussel | Braeken A.,Erasmushogeschool Brussel | Touhafi A.,Vrije Universiteit Brussel
Sensors (Switzerland) | Year: 2012

In this manuscript, we present a survey of designs and implementations of research sensor nodes that rely on FPGAs, either based upon standalone platforms or as a combination of microcontroller and FPGA. Several current challenges in sensor networks are distinguished and linked to the features of modern FPGAs. As it turns out, low-power optimized FPGAs are able to enhance the computation of several types of algorithms in terms of speed and power consumption in comparison to microcontrollers of commercial sensor nodes. We show that architectures based on the combination of microcontrollers and FPGA can play a key role in the future of sensor networks, in fields where processing capabilities such as strong cryptography, self-testing and data compression, among others, are paramount. © 2012 by the authors; licensee MDPI, Basel, Switzerland.

De Troyer T.,Erasmushogeschool Brussel | Guillaume P.,Vrije Universiteit Brussel | Runacres M.C.,Erasmushogeschool Brussel
Mechanical Systems and Signal Processing | Year: 2012

In this paper, consistent multiple-input frequency-domain estimators will be presented based on a right matrix-fraction description of the frequency response function. This matrix-fraction description leads to a fast algorithm in the same way as the least-squares complex frequency-domain estimator (LSCF). The use of multiple inputs simultaneously in the estimation (so-called polyreference estimation) has the advantage that it allows to separate closely spaced modes. The main drawback of the LSCF estimator is that it is theoretically inconsistent, i.e. the estimates do not converge to the true values when the number of measurements increases to infinity. However, the noise information available from most measurements can be used to construct a maximum likelihood-like weighting for the LSCF estimators, giving consistent estimates. The results are fast, polyreference, and consistent weighted generalised total-least-squares (WGTLS) estimators. The iterative quadratic maximum likelihood (IQML) estimator is practically consistent for high signal-to-noise ratios, with the additional advantage that it yields clear stabilisation charts. The performance of the presented WGTLS and IQML estimators is evaluated by means of ground vibration test data and demonstrated on flight flutter test data. © 2012 Elsevier Ltd. All rights reserved.

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