Abstract
Recently, high precision of repetition positioning and high-speed operation are required with a robot or device for the assembly line. Such robot/device itself is installed under well-ordered environment without being moved. On the other hand, a robot/device used for construction site is needed different consideration of safety because robot/device is not fixed and be easily affected by environment. This paper mentions that preliminary investigation regarding to safety of a RC-structure's wall washing work with the use of Wall Surface Work Device and a safety alarm system at a construction site.
