| 摘要 |
PURPOSE:To obtain an economical release detection system for a facing such as a tile capable of continuously obtaining highly reliable data within an almost real time without being affected by natural conditions or environmental conditions and not requiring temporary equipment such as a working scaffold or a gondola by utilizing a wall surface robot. CONSTITUTION:A low frequency sensor A is mainly constituted of a sensor main body 3, a vibrator 4 and a probe 5. The vibrator 4 is constituted of a metal bearing to tumble on the surface of a tile T to transmit vibration to the tile T. Further, a transmission element is attached to the inner member of the metal bearing being the vibrator 4 and, for example, low frequency of about 5-100kHz is applied to the transmission element. As the transmission element, a piezoelectric element is used. The probe 5 is also constituted of the metal bearing and tumbles on the surface of the tile T separated from the vibrator 4 by a predetermined distance to detect vibration from the tile T. A piezoelectric element is attached to the inner member of the metal bearing being the probe 5 as a detection element. |
