Introduction In the past years a significant change for computer networks occurred: the rise of direct device-to-device or machine-to-machine communication within general computer networks. The most visible and publicly discussed example is the use of radio frequency identification (RFID) tags for improved supply chain management [1,2]. Several large retail chains as well as the US Department o...

In complex industrial plants, there are usually many sensors and the modeling of plants leads to lots of mathematical relations. Before using classical tools for fault detection, the first problem to solve is: what sensors and mathematical relations should be selected for the design of a detection test such as a state observer or a parity space based detection algorithms. This paper presents a ...

The purpose of this article is to describe a middleware framework for interfacing sensors and actuators, which provides abstract and useful contextual information to applications. The framework is divided into three layers with different abstraction levels, and an integration layer. The framework is evaluated, exemplified, and further described by practical implementations using the framework.

Liquid viscosity and density sensors are essential devices in online process or condition monitoring. Microacoustic sensors combine advantages such as small size, low cost, and absence of macroscopically moving parts. However, these devices feature measurement at high shear rates and, therefore, the results may diverge from those obtained with traditional viscometers. In our contribution we inv...

Many systems of interest are modelled by partial differential equations. Examples include control of interior noise, particularly in automobiles and in aircraft; and control of structural vibrations and heating processes. In most situations, there is freedom on where to place the actuators. Performance depends strongly on actuator location; see for instance [14]. Actuators should be located at ...

In this paper, a novel magnetic field-based sensing system employing statistically optimized concurrent multiple sensor outputs for precise field-position association and localization is presented. This method capitalizes on the independence between simultaneous spatial field measurements at multiple locations to induce unique correspondences between field and position. This single-source-multi...

Distributed Sensor and actuator networks (SANs) are deployed to sense, monitor and act on the environment, Wireless Sensor Networks offer some flexibility and lower installation cost advantages in those settings and are integrated within a distributed heterogeneous network. The underlying infrastructure may include wired or wireless devices, Pcs and backbone servers arranged in an heterogeneous...

A detection scheme based on the artificial immune system (AIS) paradigm was developed for specific classes of aircraft jet engine failures including throttle, burner fuel flow valve, variable nozzle area actuator, variable mixer area actuator, low-pressure spool speed sensor, low-pressure turbine exit static pressure sensor, and mixer pressure ratio sensor. The Modular Aero-Propulsion System Si...