GROUND DISASTER DETECTOR, GROUND DISASTER DETECTION METHOD, AND GROUND DISASTER NOTIFICATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a ground disaster detector capable of precisely and swiftly detecting the possibility of ground disaster for long period of time without requiring a large cost, and to provide a ground disaster detection method and a ground disaster notification system using the ground disaster detector.SOLUTION: The ground disaster detector includes: a hollow pipe body member 10 which is embedded in the underground; and three or more piezoelectric elements 20a-20c which are disposed at a uniform distances in a peripheral direction on the inner wall of the body member 10. Each of the piezoelectric elements 20a-20c receives a stress due to a deformation of the body member 10 and outputs an electric signal.