Cross-correlation analysis of multiple fibre optic hydrophones for water pipeline leakage detection

Fabry Perot polymer film fibre-optic hydrophones and arrays for ultrasound field characterisation

An optical ultrasound sensing method based upon the detection of acousticallyinduced changes in the optical thickness of a Fabry Perot (FP) polymer film sensing interferometer has been developed as an alternative to piezoelectric based detection methods for ultrasound measurement applications. The technique provides an inherently broadband (~30MHz) response and excellent detection sensitivities...

Research on Leakage Detection and Analysis of Leakage Point in the Gas Pipeline System

Recently, with large-scale use of natural gas and massive constructions of gas pipelines, more and more public concern is focused on pipeline leakage. The leakage caused by holes on gas pipelines generates economic losses to gas companies and causes risks to the environment and sometimes accidents. In order to detect and locate pipeline rupture immediately, the leakage detection method plays a ...

APN0015 - Pipeline Leakage Detection Using Fiber-Optic Distributed Strain and Temperature Sensors - White Paper

Leakage Power Analysis of Asynchronous Pipeline Templates

In this paper we studied accurate static power consumption in five well-known templates used in implementation of asynchronous circuits. The studied templates comprising PCHB, PCFB, STFB, HC and MOUSTRAP have been used to model a 5-stage 2-bit pipeline by HSPICE in 0.18um CMOS technology. In order to analyze the static power consumption, several behavioral studies were conducted and the results...

Distributed Fibre Optic Sensors for the Detection of Liquid Spills

A range of distributed fibre optic sensors for the detection and location of aqueous, chemical and hydrocarbon fluid spills is presented. The sensors incorporate polymers that convert the swelling into a localised loss on an optical fibre when fluid exposure occurs. Optical Time Domain Reflectometry (OTDR) techniques are employed to rapidly detect and locate target liquids and chemicals at mult...