Publications
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Low power wireless sensor network for structural health monitoring of buildings using MEMS strain sensors and accelerometers Ghent University
Within the MEMSCON project, a wireless sensor network was developed for structural health monitoring of buildings to assess earthquake damage. The sensor modules use custom-developed capacitive MEMS strain and 3D acceleration sensors and a low power readout application-specific integrated circuit (ASIC). A low power network architecture was implemented on top of an 802.15.4 media access control (MAC) layer in the 900MHz band. A custom patch ...
Active Self-Testing Noise Measurement Sensors for Large-Scale Environmental Sensor Networks Vrije Universiteit Brussel
Large-scale noise pollution sensor networks consist of hundreds of spatially distributed microphones that measure environmental noise. These networks provide historical and real-time environmental data to citizens and decision makers and are therefore a key technology to steer environmental policy. However, the high cost of certified environmental microphone sensors render large-scale environmental networks prohibitively expensive. Several ...
Mechatronic powertrain virtual sensor: system-level model and sensor selection KU Leuven
Virtual sensors provide measurements for variables and parameters which are difficult to measure, based on a small number of (preferably pragmatic) measurements in combination with a numerical model of the observed system. This work presents a global virtual sensor to extract the full state of a mechatronic drivetrain based on a system-level model and a Kalman filter. Sensor selection is performed based on an observability analysis and the ...
The HOP sensor: wireless motion sensor Ghent University
An Energy-Efficient Capacitance-Controlled Oscillator-based Sensor Interface for MEMS sensors KU Leuven
This paper presents the optimization and implementation of an area- and energy-efficient capacitance-controlled oscillator-based sensor interface, which outputs a period-modulated signal. This time-based output signal can easily be digitized with a reset counter, which benefits from firstorder quantization noise shaping and oversampling. The circuit is prototyped in 130-nm CMOS technology and takes only 0.05 mm2. The performance is validated ...
A new control structure to reduce time delay of tracking sensors by applying an angular position sensor KU Leuven
In this paper, a new tracking control structure is proposed to decrease the time-delay effect of tracking sensor. To achieve this purpose, an angular position sensor, which generally exists in tracking systems, is used together with the tracking sensor. Also, a compensator is designed and applied to a system with time-delay in order to obtain a behavior same as a system without time-delay. Relying only on tracking sensor may lead to reduce the ...
A novel PLL-based sensor interface for resistive pressure sensors KU Leuven
Due to the ongoing trend towards smaller technologies, time-/frequency-to-digital conversion is gaining popularity. It benefits from the improved timing resolution in new technologies whereas voltage processing suffers from reduced signal swing and non-idealities. In this work, a new PLL-architecture for digitization of sensor signals is described which fully exploits the benefits of frequency processing. Its working principle and relevance is ...
Development of Contactless Health Monitoring Sensors and Integration in Wireless Sensor Networks KU Leuven
Triggered by the increase of the elderly popula tion, various aspects of health monitoring are bei ng investigated by researchers worldwide. The earl ier approaches in health monitoring were based on devices attached to the patient&##39;s body in volving the use of wires that impose restrictions on patients and introducing discomfort. Altho ugh some of these devices are still used nowadays, wireless technologies are being intensi vely ...