| 摘要 |
PROBLEM TO BE SOLVED: To enable monitoring of an attached state over an attachment member as a whole to fix a structure by a suspension structure.SOLUTION: A sensor device 10 comprises a sensing unit 11, a communication unit 12, a control unit 13, and a power supply unit 14. The sensing unit 11 monitors an attached state of an attachment member 30 to fix a structure to a ceiling in a tunnel by a suspension structure. The communication unit 12 transmits information on the attached state monitored by the sensing unit 11 as attachment information through a radio transmission path. The sensing unit 11 comprises a shaker 110, a first monitoring unit 111, and an output unit 113. The shaker 110 gives a prescribed vibration including frequency components between 1 and 100 kHz to the attachment member 30. The first monitoring unit 111 monitors information on the vibration of the attachment member 30 generated by the vibration given by the shaker 110 as response information. |
