A Passive Magnetoelastic Radiation Sensor

Tailored magnetoelastic sensor geometry for wireless biliary stent monitoring

This paper presents three types of wireless magnetoelastic resonant sensors with specific functionalities for monitoring sludge accumulation within biliary stents. The first design uses a geometry with a repeated cell shape that provides two well-separated resonant mode shapes and associated frequencies to permit spatial localization of mass loading. The second design implements a pattern with ...

Selected Types of Neural Networks for Magnetoelastic Sensor Error Suppression

The main advantage of magnetoelastic sensors in comparison with the classic wire ones or semiconductor ones is their marked sensitivity and higher resistance to environmental moisture. These properties predestinate them for use in civil engineering and geo-technological applications [2]. Magnetoelastic sensors of pressure force are currently based on the change of core permeability caused by me...

Demo: Passive Sensor Tags

The sensing capabilities of an Internet-of-Things (IoT) network are usually fixed at deployment. Adding new sensing modalities is a cumbersome process because it requires altering the deployed hardware. We introduce passive sensor tags that allow to easily and seamlessly add new sensors to existing IoT deployments without requiring hardware modifications or additional energy sources. Passive se...

Passive Radio Sensor Systems

Passive Wireless Magnetic Sensor

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...