抄録
Human-coexistence robot has been expected to perform services such as housework and nursing care. However, human-coexistence robot is expected to be frequent contact with human since humans share with their working environment. The risk assessment should be carried out before to use. In this paper, a method to estimate the exposure frequency of harm to human beings is proposed. In this technique, the highly advanced human-coexistence robot assumes that it works just like a human. Evaluation of the exposure frequency to harm is performed by movement history analysis of a human being and a robot. The probability of harm by this way does not give the correct probability of a collision, however, that can provide a basis of specific numbers for the risk assessment. And this method also can give a relative probability, so, it should be able to use to improve safety related design for human-coexistence robot.
