Jeroen Adrianus Johannes Thijs
Philips
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Publication
Featured researches published by Jeroen Adrianus Johannes Thijs.
international conference of the ieee engineering in medicine and biology society | 2004
Jens Mühlsteff; Olaf Such; Ralf Schmidt; Michael Perkuhn; Harald Reiter; Josef Lauter; Jeroen Adrianus Johannes Thijs; Guido Josef Müsch; Matthew Harris
The paper describes an approach to monitor a persons ECG and activity continuously with functional clothing. A belt with integrated electronics has been developed and has proven long-term robustness of all electrical components. A low-power module measures the ECG signal as well as the acceleration (2-axis) and stores data continuously up to two days. A user test has been performed to evaluate the belt according to system performance at different daily-life activities like sleeping, walking and so on. System parameters are ECG-signal quality, system up-time, and ECG-signal coverage during a day.
international conference of the ieee engineering in medicine and biology society | 2005
Jeroen Adrianus Johannes Thijs; Jens Muehlsteff; Olaf Such; Robert Pinter; Robert Elfring; Claudia Hannelore Igney
The paper compares the data obtained from a continuous wave Doppler radar sensor based on a commercially available microwave motion sensor KMY24 to an impedance cardiograph measured using a cardiac output monitor (Medis Niccomo). Both sensors are used to analyze the mechanical activity of the heart. System parameters, signal content and robustness are discussed
international conference of the ieee engineering in medicine and biology society | 2007
Jens Muehlsteff; Jeroen Adrianus Johannes Thijs; Robert Pinter; Geert Guy Georges Morren; Guido Muesch
This paper presents a handheld miniaturized sensor embodiment that allows simultaneous measurement of the electrical and related mechanical cardio-vascular activity. Mechanical motion is detected with a continuous wave Doppler radar sensor and interpreted with a synchronously detected ECG. The patients posture and activity is measured using accelerometers. Challenges of the current technical approach are the positioning of the sensors, the influence of posture and the correct interpretation of the signals. The Doppler signals are compared with phonocardiography measurements, with a focus on the challenges of this technique. There is still research in an improved modeling of the sensor setup and signal interpretation required.
international conference of the ieee engineering in medicine and biology society | 2006
Jens Muehlsteff; Jeroen Adrianus Johannes Thijs; Robert Pinter
This paper investigates a two-channel Doppler radar sensor that can provide information on the direction of movement. The radar sensor has the advantage of non-invasive, contactless measurements, compared to ultrasound. From theoretical considerations and a working model, we deduce a criterion for extracting points of no movement in a heart cycle. We propose to use this criterion to characterize the heart motion phases, beyond looking at signal morphology only. In contrast to the ECG, this technique provides easy and comfortable access to information about the mechanical activity of the heart
American Journal of Physiology | 1922
Jens Muehlsteff; Olaf Such; Jeroen Adrianus Johannes Thijs; Robert Elfring
Archive | 2006
Jeroen Adrianus Johannes Thijs; Robert Elfring; Jens Muehlsteff; Olaf Such
Archive | 2009
Sandrine Magali Laure Devot; Andreas Brauers; Elke Naujokat; Robert Pinter; Harald Reiter; Jeroen Adrianus Johannes Thijs
Archive | 2007
Jens Mühlsteff; Claudia Hannelore Igney; Jeroen Adrianus Johannes Thijs; Robert Pinter
Archive | 2004
Jeroen Adrianus Johannes Thijs; Guido Muesch; Jens Muehlsteff; Robert Pinter
Archive | 2008
Jeroen Adrianus Johannes Thijs; Jens Mühlsteff; Robert Pinter