In this paper, a homogenous multi-sensor fusion method is used to estimate the trueangular rate and acceleration with a combination of four low cost (< 10$) MEMS Inertial MeasurementUnits (IMU). An information form of steady state Kalman filter is designed to fuse the output of four lowaccuracy sensors to reduce the noise effect by the square root of the number of sensors. A hardware isimplemen...

Clustering is an important research topic for wireless sensor networks (WSNs). A large variety of approaches has been presented focusing on different performance metrics. Even though all of them have many practical applications, an extremely limited number of software implementations is available to the research community. Furthermore, these very few techniques are implemented for specific WSN ...

The success of high-level programming models in Wireless Sensor Networks (WSNs) is heavily dependent on factors such as ease of programming, code well-structuring, degree of code reusability, and required software development effort. Component-based programming has been recognized as an effective approach to meet such requirements. Most of componentization efforts in WSNs were ineffective due t...

The role of small electronic devices has been growing over the past years. Many types of devices which allow for interaction with the environment can now be found in the market and there is large set of solutions for integration of mobile devices with enterprise systems. However, most such solutions focus only on providing base services for other SOA system elements. The paper presents an exten...

An imaging displacement sensor (IDS) has been developed that can measure the displacement with an accuracy of 30 nm in 0.03 s with the precision improving to 1 nm for averaging times of 100 s. The IDS consists simply of a light emitting diode (LED) pinhole collimator and a charge-coupled device (CCD) camera chip. The position accuracy is better than 0.05% over the few mm CCD size with deviation...

Redundant sensors have been widely used in safety critical facilities such as nuclear power and chemical plants. As these industries strive to move towards condition-based sensor calibration practices, on-line calibration verification algorithms must be developed. Independent component analysis (ICA) can be applied for redundant sensor validation. Independent component analysis is a statistical...

specification of a component C, a set of components K relevant to C and called candidate solution SO, and a set of pre-selected components from SO, called solution SN. Sc(i) represents the map associated to the input value i defined in the domain of Sc. This map should provide a valid value on the output domain of Sc, i.e. there is no empty maps or invalid associations. A similar assumption is ...

The six-component pentagon P1 with its five dynamic vertices was conceived on the basis of three different orthogonal metal complex units in a 1-fold completive self-sorting of four linear ligands and two metal ions without using directional bonding.