Piezoelectric Sensing Crack Detection System and Method for Hydropower Dams

A piezoelectric sensing crack detection system and method for hydropower dams is disclosed in the invention, which comprises a bionic monitoring unit composed of multiple inter-insulated and crossed smart wires, a signal processing device, and a host 5 computer. Wherein, the bionic monitoring unit i...

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Hauptverfasser:	ZIHE LI, GUANGLI CHANG, XUJIAO YANG
Format:	Patent
Sprache:	eng
Schlagworte:	MEASURING MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE PHYSICS TESTING TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
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Beschreibung
Zusammenfassung:	A piezoelectric sensing crack detection system and method for hydropower dams is disclosed in the invention, which comprises a bionic monitoring unit composed of multiple inter-insulated and crossed smart wires, a signal processing device, and a host 5 computer. Wherein, the bionic monitoring unit is closely adhered to the structure to be monitored to form a smart neural network in a plane coordinate system, and the smart wire is connected to a multi-path selection unit of a signal processing device to form a loop. At least one piezoelectric sensing element is connected to each smart wire, and multiple piezoelectric sensing elements are used to form a piezoelectric sensing array 10 closely arranged on the surface of the structure to be monitored. The technical solution of the present invention is used to realize the omni-directional and three-dimensional monitoring of structure cracks from inside to outside.