| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a door opening/closing system and the like for managing opening/closing of a door installed in an doorway, which avoid a collision between a person entering a room and a person leaving the room, when they pass through the doorway in directions opposite to each other. <P>SOLUTION: It is determined whether or not a person except a person passing through a doorway this time remains near the doorway, by estimation based on a time from passage permission in the doorway, measurement made by passing person's photographing, or the like. When it is determined that there is a risk that the person except the person passing through the doorway this time may collide with the person passing through the doorway this time because the person except the person passing through the doorway this time remains near the doorway, notification is provided by an alarm message sound, preferably, by not only the sound but also a display. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
