| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a door opening/closing device capable of eliminating the need of directly connecting a reader-writer and an antenna part with a cable and improving the reliability of the device. <P>SOLUTION: A door opening/closing device 50 includes: a door 7 moved to be open and closed; a door driving part 3 for driving the door 7 to be open and closed; a reader-writer 1 for reading and writing information recorded in an IC card 4; an extension antenna 10 provided with a power receiving part 11 fixed to the door 7 and electromagnetically coupled with a line of magnetic force radiated from a loop antenna not shown in the figure of the reader-writer 1 and an antenna part 6 for generating the line of magnetic force by a current induced by the power receiving part 11; and a control part 2 for controlling the door driving part 3 on the basis of the recorded information of the IC card 4, which is read by the reader-writer 1. The loop antenna of the reader-writer 1 is installed at such a position that it can be electromagnetically coupled with the power receiving part 11 at least when the door 7 is at a closed position. <P>COPYRIGHT: (C)2012,JPO&INPIT |
