Frédéric Bettens’s scientific contributions

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Publications (5)


Architecting the Internet of Things
  • Data
  • File available

January 2014

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14,499 Reads

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14 Citations

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Johan Plomp

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Novel interface drivers to combine real-time localization and tracking algorithms

October 2012

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16 Reads

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1 Citation

Although research on algorithms for sound sources localization and tracking using microphone arrays are known for years, providing an interface to switch from one algorithm to the other is rather new. In this work we provide some drivers that will allow the Delay Sum Beamforming (DSB) algorithm to understand and interpret Generalized Cross Correlation (GCC) results to fasten the DSB computation. This approach reduces the sound source search spectrum by computing the DSB solely around the GCC sound source direction of arrival (DOA). This work also explores flexible architectures to integrate the system and show that our approach reduces the DSB computation by more than 50% thus improve throughput.



Figure 1. Overview of the μ SMS middleware architecture. 
Table 1 . Characteristics of the Luminite TX500/40 PIR detector.
Figure 2. State diagram of the fixed nodes. 
Table 2 . Consumption of hardware execution modes.
Figure 3. Surveillance scenario: ‘bracelet detection’ use case. 

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The DiY Smart Experiences Project

April 2011

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428 Reads

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7 Citations

In this chapter we discuss the wide range of challenges in user-generated Internet of Things applications, as being worked on among the large consortium of the DiY Smart Experiences (DiYSE) project (DiYSE, ITEA2 08005). The chapter starts with a discussion on the context of ‘DiY’ as a phenomenon to be leveraged, and eco-awareness as an example application area. The main body of the chapter is devoted to the technical outline of the DiYSE architecture, starting at the lower Internet of Things layers of sensors, actuators and middleware, over the role of semantics in device and service interoperability, up to requirements for the service framework and the application creation process. Furthermore, the chapter adds considerations concerning tangible interaction in the smart space, assumed in Di- YSE both for the context of experiencing as well as shaping the user experience. With the chapter, we thus take a holistic view, sampling the range from lowerlayer technical implications of enabling DiY creation in the Internet of Things, up to the human-level aspects of creative communities as well as tangible interaction.

Citations (3)


... It is a convergence of edge computing, pervasive networking, centralized cloud computing, fog computing, and database technologies, enabling devices to manage and transfer data and offering advanced connectivity of devices, systems, and services. As of 2018, there were 22 billion devices connected to IoT worldwide, and it is projected that by 2030, the number will reach 50 billion devices [32,33]. ...

Reference:

A Survey of Advancements in Real-Time Sign Language Translators: Integration with IoT Technology
Architecting the Internet of Things

... The DSB calculates the Steered Response Power (SRP) at different locations in a predefined area, called the Field of View (FOV), to yield an acoustic power map. Since the DSB still requires a lot of computation, i.e. processing power, we propose a hybrid algorithm that uses the angle provided by GCC to reduce the FOV of DSB while preserving its accuracy [7]. ConsiderFig. 1 (left), where there is an example of a FOV for a sound source located at 2.5 meters above the microphone array at 45 degrees from the centre. ...

Novel interface drivers to combine real-time localization and tracking algorithms
  • Citing Conference Paper
  • October 2012

... The Do-It-Yourself (DIY) paradigm is increasing, and the reason for which people make things themselves is well explained in [4], where the authors also present a holistic view of how DIY creations are often based on the Internet of Things (IoT) paradigm, a web of things that are always connected to a communication-enabled network [5]. In [4], the close connection between DIY and IoT is clear. ...

The DiY Smart Experiences Project