Results 31 to 40 of about 300,322 (303)

Low cost underwater robot sensor suite [PDF]

2008 IEEE International Conference on System of Systems Engineering, 2008
One of the most expensive parts of underwater robotics is the sensors. This paper looks at modifying off the shelf components to create a sensor suite on a small budget. A big saving is made with sonar using a cheap commercial product to create a four sonar array. A depth sensor and acceleration navigation system are also developed.
Matthew A. Joordens, Jared Serna, Scott Songer, Casey Friday, Julie Hoy, Ralph Seiger, Walter Madalinski, Mo Jamshidi 0001   +7 more
openaire   +1 more source

Low-Cost Secret-Sharing in Sensor Networks [PDF]

2010 IEEE 12th International Symposium on High Assurance Systems Engineering, 2010
Cet article présente un technique simple qui permet de sécuriser les communications dans un réseau de capteurs. Dans le contexte des réseaux de capteurs, la limitation au niveau des ressources (puissance de calcul, eńergie, communication) fait que l'usage de la cryptographie asymétrique classique n'est pas envisageable. La technique proposée repose sur
Bertier, Marin, Mostefaoui, Achour, Tredan, Gilles   +2 more
openaire   +2 more sources

Assessment of a Dual-Wavelength Compensation Technique for Displacement Sensors Using Plastic Optical Fibers [PDF]

, 2012
The paper analyzes the performance of a dual-wavelength technique devised to compensate power fluctuations in intensity-modulated plastic optical fiber sensors, which were specifically conceived for the measurement of displacements in industrial and ...
Massimo Olivero, Olivero, Massimo, Perrone, Guido, Vallan, Alberto, Maria Luisa Casalicchio, Guido Perrone, CASALICCHIO, MARIA LUISA, Alberto Vallan   +7 more
core   +1 more source

Suitability of low-cost particulate matter sensors for measurements in ventilation systems [PDF]

, 2020
Particulate matter (PM) is one of the most critical pollutants affecting indoor air quality (IAQ). Hence, reducing the exposure of occupants to indoor PM pollution is critical. Ventilation systems for commercial and residential buildings are instrumental
Medina L., Marval J., Vallejo J., Tronville P.   +3 more
core  

A low-cost CMOS neurological sensor array [PDF]

SPIE Proceedings, 2005
Current methods used to study neural communication have not been able to achieve both good spatial and temporal resolution of recordings. There are two ways to record synaptic potentials from nerve endings: recordings using single or dual intracellular or extra cellular metal electrodes give good temporal resolution but poor spatial resolution, and ...
Newman, P. J., Lisner, P. C., Yeow, Y. T., Choy, P. T., Lavidis, N. A.   +4 more
openaire   +2 more sources

A Low-Cost Calibration Method for Temperature, Relative Humidity, and Carbon Dioxide Sensors Used in Air Quality Monitoring Systems

Atmosphere, 2023
Low-cost sensors provide an affordable alternative to monitor environmental parameters with acceptable performance. There is a substantial amount of literature where low-cost sensors are compared with high-end reference measurements.
Rosa Amalia González Rivero, Luis Ernesto Morera Hernández, Olivier Schalm, Erik Hernández Rodríguez, Daniellys Alejo Sánchez, Mayra C. Morales Pérez, Vladimir Nuñez Caraballo, Werner Jacobs, Alain Martinez Laguardia   +8 more
doaj   +1 more source

Chemical event tracking using a low-cost wireless chemical sensing network [PDF]

, 2008
A recently developed low-cost light emitting diode (LED) chemical sensing technique is integrated with a Mica2Dot wireless communications platform to form a deployable wireless chemical event indicator network.
Corcoran, Brian, Dermot Diamond, Beirne, Stephen, Lau, King-Tong, Stephen Beirne, King Tong Lau, Diamond, Dermot, Brian Corcoran   +7 more
core   +1 more source

Low-cost, disposable colourimetric sensors for metal ions detection

Journal of Analytical Science and Technology, 2020
In this work, two colourimetric sensors for metal ions detection are presented. The devices are obtained by fixing two classical dyes, Eriochrome Black T (EBT) and 1-(2-pyridylazo)-2-naphthol (PAN), on the commercial paper sheet “Colour Catcher®” (here ...
Giancarla Alberti, Camilla Zanoni, Lisa Rita Magnaghi, Raffaela Biesuz   +3 more
doaj   +1 more source

The optimisation of a paired emitter-detector diode optical pH sensing device [PDF]

, 2010
With recent improvements in wireless sensor network hardware there has been a concurrent push to develop sensors that are suitable in terms of price and performance.
Corcoran, Brian, Dermot Diamond, Beirne, Stephen, Lau, King-Tong, Dylan Orpen, Stephen Beirne, King Tong Lau, Orpen, Dylan, Diamond, Dermot, Fay, Cormac, Cormac Fay, Brian Corcoran   +11 more
core   +1 more source

Low frequency noise investigation of pT-level magnetic sensors by cross-spectral method [PDF]

, 2021
We present a simple method to estimate the noise of magnetic sensors running in the Earth’s field range by establishing the cross-power spectrum density during ambient field operation and performing spectral subtraction. This method has advantages to the
Saunderson E., Dressler M., Janošek M., Novotný D.   +3 more
core   +1 more source