This paper describes the analysis, simulation and testing of a microengineered motion-driven power generator, suitable for application in sensors within or worn on the human body. Micro-generators capable of powering sensors have previously been reported, but these have required high frequency mechanical vibrations to excite a resonant structure. However, bodydriven movements are slow and irreg...

A technique is described for estimating moisture content of small samples of hard red winter wheat (10 to 30 kernels) by impedance measurements at 1 and 4.5 MHz on a parallel-plate capacitor holding the sample between the plates. The measurement system was calibrated by measurements on samples, ranging from 9 to 20% moisture content, wet basis, from three wheat cultivars grown in 1991 and 1992,...

The fabrication and testing of a minimally intrusive (2 mm high, 10 mm diameter) biomedical interface pressure sensor are described. Such sensors are needed for the implementation of improved safety features in the next generation of automated intravenous regional anaesthesia (IVRA) systems. The sensor utilizes a structured elastomer as a deflection element sandwiched between the plates of a pa...

The formation and disappearance of ice changes will cause the change of its capacitance, we can use this features of air, ice and water has different capacitance under different temperature to measure the ice thickness. The capacitance sensor is designed based on this theory that can measure the ice thickness in the harsh environment more effective. Based on the finite element simulation softwa...

Abstract In this work, parallel plate capacitors are numerically simulated by solving weak forms within the framework of finite element method. Two different domains studied. We study infinite capacitor problem and verify implementation deriving analytical solutions with a single layer multiple layers between two plates. Furthermore, we it Love’s potential equation Xiang’s capacitance equation....

Abstract This article displayed the method of partial discharge (PD) measurement in high-voltage insulator and calibrating effective element (capacitor) to enhance PD signal. The cavity shapes were plate–plate, cylindrical spherical inside solid insulator. proposed system enables from detecting reverse main discharge, respectively, through rise tail time pulses. that took place was bounded with...

This paper presents a 4th order CLCL resonant converter which is suitable for constant current power supply applications. This converter is designed with Immittance characteristic with two inductors and two capacitors in resonant network. A detailed analysis and design process of a 200w converter as a constant current supply have been provided and simulation results are verified with results of...

This paper describes a 12-bit 100kS/s successive approximation register analog-todigital converter (SAR ADC) for biomedical system. Both top-plate sampling technique and VCM-based switching technique are applied to the capacitor digital-to-analog converter (CDAC) to implement a 12-bit SAR ADC with 10-b capacitor array DAC. To enhance the linearity of proposed ADC, thermometer decoder is used in...

This paper describes the mechanisms of powerdistribution-plane resonance in multilayer printed circuit boards and the techniques to control the resonance. The powerdistribution-plane resonance is responsible for high-level emissions and circuit malfunctions. Controlling the resonance is an effective technique, so adequate characterization of the resonance is necessary to achieve control. The re...