Rockfall hazard alarm strategy based on FBG smart passive net structure

A methodology for physically based rockfall hazard assessment

Rockfall hazard assessment is not simple to achieve in practice and sound, physically based assessment methodologies are still missing. The mobility of rockfalls implies a more difficult hazard definition with respect to other slope instabilities with minimal runout. Rockfall hazard assessment involves complex definitions for “occurrence probability” and “intensity”. This paper is an attempt to...

GIS-Based Rockfall Hazard Assessment in Support of Decision Making

When designing infrastructure, settlements or facilities in mountainous areas, rockfall hazard assessment is considered essential, as it is a major hazard worldwide. Rockfall hazard estimation can help greatly in the design of countermeasures, such as barriers and net fences, in order to protect the built environment, as well as for landuse planning. Rockfall modelling is considered an effectiv...

Deformation Sensing of Colonoscope on FBG Sensor Net

Owing to the complex condition and non-visualization of human intestinal, Loop formation of colonoscope often happens to hurt the patient during the diagnosis of colon. This paper presents a deformation sensing method using Fiber Brag Grating(FBG) sensor net to real-time display the shape of colonoscope that would help the endoscopist how to manipulate the colonoscope into the body and reduce t...

Alarm fatigue a top patient safety hazard.

A New Broken Wires Diagnosis Method Study Based on FBG Smart Cable

The smart cable with embedded distributed fiber optical Bragg grating (FBG) sensors was chosen as the object to study a new diagnosis method about broken wires of bridge cable. The diagnosis strategy based on cable force and stress distribution state of steel wires was put forward. By establishing bridge cable and cable steel wires model, the broken wires sample database was simulated numerical...