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Position sensitive detectors (PSDs), used in high-end biotechnology, are based on optical sensors built over quadrant photodetectors (QPDs) or active pixel sensor (APS). These devices are intended to measure slight movements of laser spots. The QPD are, by far, the best approach in terms of resolution and noise, but requires complex and expensive $x$ -$y$ micropositioners to perform sensor alignment...
In recent years, Wireless Sensor Networks have experienced significant growth, mainly motivated by the development of standard communication protocols and the availability of low cost microcontrollers and wireless transceivers, resulting in low-power small-size sensing and data processing capable devices, and wireless communication links. In this paper, a hardware platform for the deployment of a...
Position sensitive detectors (PSDs), used in high-end biotechnology, are based on optical sensors built over quadrant photodetectors and active pixel sensors. These devices are intended to measure slight movements of a laser spot. Quadrant photodetectors (QD) are, by far, the best approach in terms of resolution and noise, but require complex and expensive micropositioning machinery to perform sensor...
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