| 摘要 |
PROBLEM TO BE SOLVED: To provide a displacement detector for detecting relative displacement of a second structure such sa an architectural structure relative to a first structure such as a foundation structure, which can be manufactured at a relatively low cost.SOLUTION: An imaged member 14 is arranged on one of a first structure such as a foundation structure 6 and a second structure such as an architectural structure 10, and imaging means 20 for imaging the imaged member 14 is arranged on the other. Image processing means appropriately processes an image imaged by the imaging means 20 and detects relative displacement of the second structure relative to the first structure.SELECTED DRAWING: Figure 1 |
