In recent years, magnetic tracking has been applied in many biomedical settings due to the transparency of the human body to low-frequency magnetic fields. One way to improve system performance and/or reduce system cost is to optimize the sensor positions of the tracking system. In this work, the sensor positions of a magnetic tracking system are optimized by exploiting an analytical model wher...

We introduce the behavior of the electrical output response of a magnetic field sensor based on microelectromechanical systems (MEMS) technology under different levels of controlled magnetic noise. We explored whether a particular level of magnetic noise applied on the vicinity of the MEMS sensor can improve the detection of subthreshold magnetic fields. We examined the increase in the signal-t...

The novel contactless current sensors consist of an integrated CMOS Hall effect sensor covered by a thin, ferromagnetic layer structured on its surface. The Integrated Magnetic Concentrator (IMC) layer acts as a magnetic flux concentrator, providing a high magnetic gain which increases the sensor’s signal-to-noise ratio. The sensor is particularly appropriate for DC and AC current measurement. ...

SAW-based magnetic sensors enable the remote interrogation of local magnetic fields. Designs utilizing a magnetostrictive delay line or a magnetic IDT have been proposed, showing a large sensing range with a rather low sensitivity. Another concept, employing a SAW device loaded with a GMI element, has been shown to provide higher sensitivity. However, the GMI element is a microwire structure, w...

This paper presents a non-destructive test method for steel corrosion in reinforced concrete bridges by using a 3-dimensional digital micro-magnetic sensor to detect and analyze the self-magnetic field leakage from corroded reinforced concrete. The setup of the magnetic scanning device and the measurement mode of the micro-magnetic sensor are introduced. The numerical analysis model is also bui...