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Presents the introductory welcome message from the conference proceedings. May include the conference officers' congratulations to all involved with the conference event and publication of the proceedings record.
Several simple circuits with rather complex nonlinearities are presented, essentially based on diodes and varistors. These circuits are believed to extend the family of chaotic circuits based on diodes, as illustrated by the literature. Potential applications to chaotic sensors are briefly discussed.
Left ventricular ejection time (LVET) is an important component of systolic time intervals. It has been used as a surrogate for left ventricular contractility and stroke volume. We developed a method for the assessment of LVET from wrist cuff pulse waveforms. The waveforms are obtained from a partially inflated cuff held at the level of the heart. Each test involved acquisition of 10 second sample...
Precise control methods of the electric drives with induction machines like field oriented control (FOC) or direct torque control (DTC) need an accurate model of the machine they control. Certain parameters of the model have to be obtained with sufficient accuracy before the drive can be put into the operation. This article concerns an offline parameter identification method that is suitable for on-site...
A system for evaluating instrument current transformer errors using a lock-in amplifier is described in the paper. The difference between the standard and the transformer under test is evaluated as the ratio error and the phase displacement. The attention is focused to measurement of errors at the range of primary currents less than 20% of the nominal value. The measurement accuracy of current and...
The paper addresses a top-down design flow of depletion-load digital inverter formed by monolithically integrated depletion-mode and enhancement-mode high electron mobility transistors (HEMTs) on common InAlN/GaN heterostructure grown on sapphire substrate. We describe the inverter design at transistor level using HSPICE models developed earlier. The inverter layout representation, which also defines...
Today's trend of an increasing number of networked embedded devices pervades many areas. Ranging from home automation, industrial or automotive applications with a large number of different protocols, low resources and often high demands on real-time make it difficult to secure the communication of such systems. A concept of an uncoupled MAC which is able to ensure the authenticity and integrity of...
The article focuses on a method of quantifying movement of patients with Parkinson's disease (PD) using wearable motion capture (MoCap) system and bilateral cyclograms. The method uses cyclogram characteristics such as the slope, second moment of area and the area of the cyclogram to compare movements of left and right side of body. For symmetric movement, cyclogram should lie on a symmetry line passing...
This brief presents a new architecture for an ultra-low power and area-efficient 8-channel prototype of a neural signal recording front-end circuitry. For implantable neural recording circuits, low power and low area are two of the most critical requirements. In contrast to architectures existing in the literature, the presented recording path is centered on a single high-performance programmable...
This paper presents a GaN transistor half-bridge prototype with robust pulse by pulse current limiting drivers designed to turn off safely the transistor for the rest of the PWM period when the drain current exceeds the set value. The half-bridge is intended as the key part of a DC/AC converter output stage with operating frequency up to 1 MHz. The current limiting circuit is designed to meet the...
In this work we present two electronic key components to operate a quadrupole ion trap mass spectrometer. Radio frequency high voltage generation is mandatory to create a trapping field. Our trap works in the Fourier transform mode, consequently very small induction currents have to be detected from the ion motion. Since interference signals from the storage voltage are many orders of magnitude higher...
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