초록 ▼

Deflections in supporting structures, due to external stress factors, can be detected with one or more energy beams generated along a path adjacent to the structure. Receivers are positioned in or near the path. Target blocks are positioned along the support structure. When a deflection occurs in th

Deflections in supporting structures, due to external stress factors, can be detected with one or more energy beams generated along a path adjacent to the structure. Receivers are positioned in or near the path. Target blocks are positioned along the support structure. When a deflection occurs in the support structure, the targets are concurrently displaced into or out of the path. The receiver registers a change in state and activates an alarm. Multiple beams can be used to detect deflection in one of a number of predefined zones, the alarm indicating the zone in which the beam path was broken by the deflection.

대표청구항 ▼

[ What is claimed is:] [1.] A deflection monitoring system for detecting deflections in a structure, the monitoring system comprising:an energy source for generating an energy beam along a path near the structure;a receiver for receiving the energy beam;at least one solid target attached to and exte

[ What is claimed is:] [1.] A deflection monitoring system for detecting deflections in a structure, the monitoring system comprising:an energy source for generating an energy beam along a path near the structure;a receiver for receiving the energy beam;at least one solid target attached to and extending downwardly from the structure and located near the path; andan alarm connected to the receiver;wherein the target is displaceable into the path by a vertical deflection in the structure, the alarm being triggered by the receiver in response to displacement of the target relative to the path.