Abstract
Recently, many kinds of robots such as industrial and service robots has being developed. The International Organization of Standardization (ISO) provides the principle of machine design in general, by ISO12100[1]. The engineers should reduce the risk based on principle of safe design, so that they could satisfy the demands from society. That is to say, a service robot can be accepted and used in society, if designers of the robot can satisfy the principle of safe design. Regarding to the robots which are used in RoboCup Soccer it have the problem that a human may crash into the robot. Therefore, as one of principles of safe design (safe in crashing robot with human), we should consider the safety problem of the robot that is used in RoboCup Soccer as well. In this paper, we introduce the process that is how to reduce the risk.
