| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an electromagnetic field sensor that simplifies discrimination operation with cables quickly and accurately discriminated. <P>SOLUTION: A clamp type sensor 30 includes a near-annular electrode 31 which is made from non-magnetic material having conductivity and circumferentially encloses part of cables, with the cable being clamped, a magnetic core 33 which is made from magnetic material and is arranged outside a ring 31a of the electrode 31 through an insulating body 32, a winding 34 for winding the magnetic core 33, and an output part 35 which is led out of the electrode 31 by a lead wire 35a and is led out from both ends of the winding 34 by a lead wire 35b. An induced current generated at the winding 34 by electromagnetic induction is output from the output part 35, and a voltage generated at the electrode 31 by electrostatic induction is output from the output part 35. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
