| 摘要 |
PROBLEM TO BE SOLVED: To provide an inspection tool for a structure or the like with excellent detection accuracy.SOLUTION: An inspection tool 1 includes: a contact member 20 sliding on the surface of a structure; a support body 10 which is indirectly installed with the contact member 20 so as to support the contact member 20; a first microphone unit which is installed in the support body 10 so as to detect vibration including acoustic waves; and a second microphone unit which is installed proximately to and in parallel with the first microphone unit so as to suppress detection of acoustic waves and detect vibration. The inspection tool 1 further includes: a sound collection unit 40 in which the first microphone unit and the second microphone unit are disposed so that each sound collection section is directed in the same direction or an opposite direction; a buffer member 30 which is installed between the contact member 20 and the support body 10 and is elastically deformable; and an arithmetic unit for performing addition or subtraction so that an output signal of the second microphone unit is cancelled from an output signal of the first microphone unit. |
