Contactless high frequency inductive position sensor with DSP read out electronics utilizing band-pass sampling

Dsp Based Read out System for Contactless High–frequency Inductive Position Sensors

This paper presents a precise and low cost absolute position inductive measurement system for rough industrial environments. This transducer works on similar principles as contactless resolvers but consists of a rectangular antenna PCB, a passive LC resonance target and a signal processing unit. The read out electronics utilize undersampling to demodulate the transducer in–phase and quadrature ...

Rapid and precise read-out of terahertz sensor by high-speed asynchronous optical sampling

Introduction: Frequency selective surfaces (FSS) are based on metallic resonator arrays with tailored transmittance and reflectivity properties [I]. Recently, it has been proposed in a numerical study to use THzFSS based on asymmetric split ring resonators as a sensor for detecting biomolecular sample films with a thickness of only 10 nm [2]. Because large biomolecules, e.g. DNA, exhibit a mult...

Contactless inductive flow tomography.

The three-dimensional velocity field of a propeller-driven liquid metal flow is reconstructed by a contactless inductive flow tomography. The underlying theory is presented within the framework of an integral equation system that governs the magnetic field distribution in a moving electrically conducting fluid. For small magnetic Reynolds numbers this integral equation system can be cast into a...

Miniaturised Microcontroller based Read-out Electronics for Space Applications

The Particle Detector Front End (PDFE) ASIC together with a 8052 based microcontroller forms a chip set being developed by the European Space Agency (ESA) for compact low cost scientific energetic particle instrumentation. The architectural system analysis and trade-off has resulted in a chip set well suited for implementation of flexible and highly integrated instruments. Driving requirements ...

High-performance variable band-pass/band-stop state-space digital filters using Gramian-preserving frequency transformation