دانلود رایگان مقاله انگلیسی یک بررسی در مورد حسگر های فیبر نوری برای نظارت بر محیط - اشپرینگر 2017

Environmental monitoring has become essential in order to deal with environmental resources efficiently and safely in the realm of green technology. Environmental monitoring sensors are required for detection of environmental changes in industrial facilities under harsh conditions, (e.g. underground or subsea pipelines) in both the temporal and spatial domains. The utilization of optical fiber sensors is a promising scheme for environmental monitoring of this kind, owing to advantages including resistance to electromagnetic interference, durability under extreme temperatures and pressures, high transmission rate, light weight, small size, and flexibility. In this paper, the optical fiber sensors employed in environmental monitoring are summarized for understanding of their sensing principles and fabrication processes. Numerous specific applications in petroleum engineering, civil engineering, and agricultural engineering are explored, followed by discussion on the potentials of OFS in manufacturing.

5. Conclusions

The optical fiber sensor (OFS) has immunity to electromagnetic interferences and chemical corrosion, and is light weight, of small size, and boasts high flexibility; therefore, it can be effectively utilized for high sensitivity monitoring of chemical or physical properties in harsh, underground and subsea environments. In this paper, the OFS types employed for environmental monitoring in the fields of petroleum engineering, civil engineering, agricultural engineering, and manufacturing engineering were reviewed. Their respective principles were described according to the following classifications: point-based OFS and distributed OFS. Their fabrication processes, namely grating inscription, functional coating, and fiber shaping, also were detailed. Environmental monitoring applications have been investigated over the past five years. In the manufacturing point of view, the OFS has become a powerful tool of process control for improved energy efficiency and facility eco-friendliness.