adequate coverage is one of the main problems for distributed wireless sensor networks and the effectiveness of that highly depends on the sensor deployment scheme. given a finite number of sensors, optimizing the sensor deployment will provide sufficient sensor coverage and save power of sensors for movement to target location to adequate coverage. in this paper, we apply fuzzy logic system to...

This paper describes a wireless, remote query glucose biosensor using a ribbonlike, mass-sensitive magnetoelastic sensor as the transducer. The glucose biosensor is fabricated by first coating the magnetoelastic sensor with a pH-sensitive polymer and upon it a layer of glucose oxidase (GOx). The pH-responsive polymer swells or shrinks, thereby changing mass, respectively, in response to increas...

Seismometers and MEMS accelerometers use the force-balance principle to obtain measurements. In these instruments the displacement of a mass object by an unknown force is sensed using a very highresolution displacement sensor. The position of the object is then stabilised by applying an equal and opposite force to it. The magnitude of the stabilising force is easily measured, and is assumed to ...

This paper summarizes the results of a joint analytical and experimental investigation of a new class of resonant microsensors. The key feature f these devices is that they exploit vibration localization in a set of functionalized, frequency mistuned microbeam resonators, each coupled to a ommon shuttle mass, to facilitate the detection of multiple analytes using a single sensor input and a sin...

With some design care, a mass flow sensor, pressure transducer and a temperature sensor can provide a fast and accurate method of measuring many difficult volumes.

We report here a novel two-mode mass flowmeter that can be operated in either thermal or differential pressure mode. By combining these two complementary operating principles, the performance can be improved significantly. This flowmeter is based on a multi-sensor chip that includes a 1-D array of shear stress, pressure and temperature sensors. The multi-sensor chip can also be employed in many...

This paper describes a hybrid mass sensing system comprising QCM (quartz crystal microbalance) sensor operating under atmospheric pressure and 3-DOF mode localized coupled resonator in vacuum. Nanoparticles as consecutive perturbations are added onto the QCM, output signals with respect to amount of change then being manipulated generate electrostatic forces. Subsequently, forces act on externa...