Among the different classes of sensors available for structural health monitoring(SHM), non-contact displacement sensors are preferable since they require neither a fixed reference near the monitored object nor any signal integration as it occurs for velocimeters and accelerometers. Inertial GPS, as a combination of inertial sensors and GPS, should increase the robustness of a GPS system and the accuracy of inertial sensors. This aspect is first discussed. Then a vision system covering a medium range, which takes advantage of well-developed and still developing technologies(like videocamera, digital image processing algorithms) is considered. The system hardware component includes monitored target, videocamera and processor. The software includes object recognition, coordinates calibration and displacement calculation.
A Non Contact Displacement Measurement System Based on Vision System
CASCIATI, FABIO;WU, LIJUN
2011-01-01
Abstract
Among the different classes of sensors available for structural health monitoring(SHM), non-contact displacement sensors are preferable since they require neither a fixed reference near the monitored object nor any signal integration as it occurs for velocimeters and accelerometers. Inertial GPS, as a combination of inertial sensors and GPS, should increase the robustness of a GPS system and the accuracy of inertial sensors. This aspect is first discussed. Then a vision system covering a medium range, which takes advantage of well-developed and still developing technologies(like videocamera, digital image processing algorithms) is considered. The system hardware component includes monitored target, videocamera and processor. The software includes object recognition, coordinates calibration and displacement calculation.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
