A 15-nW per Sensor Interference-Immune Readout IC for Capacitive Touch Sensors

This paper presents a readout IC that uses an asynchronous capacitance-to-digital-converter (CDC) to digitize the capacitance of a touch sensor. A power-efficient tracking algorithm ensures that the CDC consumes negligible power consumption in the absence of touch events. To facilitate its use in wake-on-touch applications, the CDC can be...

A 15nW per Button Noise-Immune Readout IC for Capacitive Touch Sensor

This paper presents a readout IC that uses an asynchronous charge-redistribution-based capacitance-to-digital-converter (CDC) to digitize the capacitance of a touch sensor. Thanks to the power efficient tracking algorithm, the CDC consumes negligible power consumption in the absence of touch events. To facilitate stand-alone or wake-on-touch...

Analysis and Remediation of the Salinized, Damour Coastal (Dolomitic) Limestone Aquifer in Lebanon

Coastal aquifer management has recently emerged as a main scope in groundwater hydrology, especially in arid and semi-arid zones. About two thirds of the human population are currently gathered close to shorelines relying on coastal groundwater resources. Worldwide, these systems are subject to quality deterioration due to a multitude of...

Energy-Efficient Capacitive-Sensor Interface Based on A Multi-Slope ADC

This thesis presents an energy-efficient capacitive sensor interface based on a multi-slope analog-to-digital converter (ADC). This highly stable capacitance-to-digital converter (CDC) utilizes precision resistor as reference components. By utilizing a multi-slope analog-to-digital converter, the conversion time of this design is reduced down to...

Handleiding voor het gebruik van NEXT 1.2 - User manual NEXT 1.2 - NLR engineering X-pert system Toolkit

NEXT 1.2 is an expert system shell developed at NLR. NEXT has a knowledge representation mechanism based on a combination of context tree and production rules. The inference mechanism is based on a combination of backward and forward reasoning. NEXT 1.2 is available on a CYBER 180/855 under NOS and on a VAX under VMS. Supply of other...

De netwerkvoorzieningen op het NLR ten behoeve van het supercomputergebruik - Data communication network at NLR for supercomputer usage

For the development of methods for aerospace research and development at NLR large computer facilities are available, among which a NEC SX-2 supercomputer, a Control Data Cyber 180-855 mainframe and various minicomputers and workstation. To provide users a good access to the various systems a high speed computer network is defined, existing of a...

3D Euler flow simulations on a cyber 205 vector computer

A computational method for solving the 3D Euler equations is studied. The method is based upon an upwind flux-difference splitting scheme by Osher, exhibiting an implicit mechanism for numerical viscosity, in connection with an explicit time-marching finite-volume technique. The computer program is developed to run efficiently on both a scalar...

CAD-systemen voor overdracht van kennis

The NLR in the Netherlands renders scientific support and technical assistance for the design and operation of aircraft and spacecraft. The approach of NLR can be characterized by integration of experimental and theoretical investigations. For this an integrated computer and terminal network has been developed that links both NLR laboratory...

Application of model following control and estimation techniques to attitude control of manoeuvring spacecraft Part II: Simulation software description

This document describes two computer programs developed during a study of the application of modern control techniques in the area of spacecraft attitude control. Theory and simulation results are described in part I of this report. In part II a general overview of the tasks of the simulation program is presented, and program design aspects are...

An hierarchic multi-suppliers computer network of a research laboratory with two settlements

For the aerospace laboratory NLR in the Netherlands the considerations are discussed that formed the basis of along-term plan to realize an optimal computer network. In the optimization process up to now the laboratory switched from a situation in which in each of both settlements one central close shop computer centre was available to a...