A full digital magnetic induction measurement device for non-contact vital parameter monitoring (MONTOS)

Abstract

Magnetic induction measurements enable contactless monitoring of breathing and heart activity. Since this technique is in the scope of many research groups, there are several research devices available. Most of these devices are suitable for tomography approaches, e.g. edema detection or for monitoring technical processes, such as fluid in tubes or metal blocks. However, these devices are less useable for vital parameter monitoring. In this article, we present an new modular magnetic induction measurement system called MONTOS (Monitoring System) for this scenario. Since the implementation is fully digital, each module can easily be applied to several measurement conditions in vital parameter monitoring, i.e. Multi-Frequency measurement modes, Single-Excitation and Multiple-Measurements or Multiple-Excitation and Single-Measurement. Data output is realized via local area networks (LAN), thereby streaming the data to a monitoring computer. Finally, it will be demonstrated that impedance changes due to breathing of a human adult can be detected.

Three-Dimensional Magnetic Induction Tomography: Practical Implementation for Imaging throughout the Depth of a Low Conductive and Voluminous Body

“…Thus, it is not the replacement of, but the potential addition to, existing methods that makes MIT particularly relevant. More biomedical applications might arise in the field of rapid, non-hazardous, non-contact lung diagnostics [10], or in the rapid detection of hemorrhage in the human skull [11]. Nevertheless, possible applications are not limited to biomedicine.…”

Magnetic Induction Tomography: Separation of the Ill-Posed and Non-Linear Inverse Problem into a Series of Isolated and Less Demanding Subproblems

“…MIT could be used, for example, in the non-invasive mapping of cardiac tissue conductivity [ 5 ]. Other biomedical applications arise in the field of rapid, non-hazardous and non-contact lung diagnostics [ 6 ] or in the rapid detection of internal bleeding or tumors in the human skull [ 7 , 8 ].…”

Cardiopulmonary Signal Detection Based on Magnetic Induction

“…However, the testbed is not equipped in the normal bed, and some manual postprocessing is required. In [10][11][12], they present a simulation model with a six-channel axial coil gradiometer underneath a neonatal thorax. They analyze the coverage of the whole bed, induction into the body, and distance between measuring points.…”