Wall crack change detector

摘要

To provide a wall crack change detector. A wall surface crack change detector includes a housing (10) having a detection surface pasted at a detection target position, and a fixed structure, wherein the housing is attached to the detection target position by the fixed structure and is movable And the at least one image sensor 20 installed in the housing so that the detection end faces the detection surface, the light source 30 installed in the housing toward the detection surface, an image It includes a crack change detection unit 40 connected to the sensor, and an output device connected to the crack change detection unit and outputting in at least one of display, memory record, and alarm. [Selected figure] Figure 1