Abstract
Research on life support systems by the robot technology include robotic room or ubiquitous home systems. Such a system uses many environmental sensors and controllers for recognizing human states and providing appropriate services. These equipments must be, however, installed in advance in a room. We therefore take another approach, in which we use a robot as a mobile sensor and controller. The robot autonomously wanders in the environment, measures physical states such as temperature, lighting, air at the very human position, and controls appliances or gives advice to them so that it "connects" house and resident to maintain a comfortable living environment.