| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an access management system discriminating (determining) 0-3 passing persons by msec, using a dual optical sensor with a beam-to-beam space of 17 mm, and preparing various kinds of tables based on a data obtained therein. <P>SOLUTION: This access management system by the dual optical sensor measures the number of simultaneously passing persons by a time to pass through the dual optical sensor. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
