1,720,983 research outputs found
Tecniche edilizie romane nell'arco alpino: metodologia di analisi quantitativa e primi risultati di una ricerca
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A Noncontact ECG Sensing System With a Micropower, Ultrahigh Impedance Front-End, and BLE Connectivity
No full textCapacitive noncontact electrodes offer a promising solution to improve comfort and unobtrusiveness in continuous monitoring ECG systems which are becoming more widespread in wearable devices. Most implementations based on off-the-shelf components require rather large electrodes and power budgets while custom application-specific integrated circuits (ASICs) face significantly higher adoption challenges. In this article, we present a novel micropower ultrahigh impedance front-end with an equivalent input capacitance of 70 fF in the ECG band, enabling contactless ECG acquisition with electrodes as small as 78.5 mm2 with a power consumption of only . The front-end implements a novel power supply bootstrapping architecture and is integrated in a full acquisition system which includes a 24-bit analog to digital converter (ADC) and a bluetooth low energy (BLE)-capable Cortex M4 processor, achieving up to ten days of continuous operation on a 600 mAh PR44 battery
Towards a Wearable Interface for Food Quality Grading through ERP Analysis
Full text linkSensory evaluation is used to assess the consumer acceptance of foods or other consumer products, so as to improve industrial processes and marketing strategies. The procedures currently involved are time-consuming because they require a statistical approach from measurements and feedback reports from a wide set of evaluators under a well-established measurement setup. In this paper, we propose to collect directly the signal of the perceived quality of the food from Event-related potentials (ERPs) that are the outcome of the processing of visual stimuli. This permits to narrow the number of evaluators since errors related to psychological factors are by-passed. We present the design of a wearable system for ERP measurement and we present preliminary results on the use of ERP to give a quantitative measure to the appearance of a food product. The system is developed to be wearable and our experiments demonstrate that is possible to use it to identify and classify the grade of acceptance of the food
The Pedogeochemical Map of Parma alluvial plain: contribution of soil studies to geochemical mapping
No full textA wearable device for brain–machine interaction with augmented reality head-mounted display
No full textSoil- and geologically-oriented geochemical maps: A pilot study from the southern margin of the Po Plain (Parma province)
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