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We propose and demonstrate a cascaded-cavities Fabry-Perot interferometer (FPI) for simultaneous measurement of pressure and temperature based on photonic crystal fiber. The sensor is composed of cascaded air-cavity and silica-cavity. The air-cavity and silica-cavity are both sensitive to temperature and pressure because of the thermo-optic coefficient and Young's modulus. We can obtain the pressure...
Abstract-The running state of electrical products is related to many attributes, but the more parameters, the more inconvenient the monitoring and statistics will be, and not all properties are closely related to the running state. Rough set can be used to reduce the attribute value, and the kernel of the simplest attribute can be obtained. At the same time, Markoff can be used to predict the value...
Lead-free n-type contacting photovoltaic pastes have historically lagged behind their lead-containing counter-parts in efficiency performance. The industry almost exclusively uses front-side silver pastes that rely on lead-containing frits to achieve good SiNx anti-reflective coating (ARC) etching and low contact resistance. Research into lead-free frit chemistry has been a lower priority due to regulatory...
Precision Agriculture Monitor System (PAMS) is an intelligent system which can monitor the agricultural environments of crops and provides service to farmers. PAMS based on the wireless sensor network (WSN) technique attracts increasing attention in recent years. The purpose of such systems is to improve the outputs of crops by means of managing and monitoring the growth period. This paper presents...
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