| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a device for detecting the opened/closed state of a valve capable of surely detecting the fully opened and/or closed state of the valve. <P>SOLUTION: The device for detecting the opened and closed state of the valve includes an electronic tag with a loop antenna partially discontinuous by a separating part, and a detection switch 20 connected to the electronic tag for connecting and disconnecting a terminal of the loop antenna. The detection switch 20 includes a case body 21, a pair of electrodes 22, 23 attached to the inside of the case body 21 and connected to the terminal of the loop antenna, and movable members (a conductive plate 24 and a displacement body 25) arranged movably in the case body 21 and in contact with the electrodes 22, 23 by movement to short-circuit the electrodes 22, 23, and moreover, separated from the electrodes 22, 23 to disconnect the electrodes 22, 23. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
