| 摘要 |
<p>PURPOSE:To improve the sensitivity of magnetic communication by providing a transmitting unit and a receiving unit between a pad and a column sandwiching a spoke part, and using a cored coil for the receiving unit. CONSTITUTION:The back of a pad 18 is provided with a transmitting unit 23, which is connected to a transmitting device 22 and generates a magnetic field. On the other hand, the front end of a column 1 is provided with a receiving unit 29 connected to a receiving device 32. For said receiving unit 29 and transmitting unit 23, coils 25 and 31 as wound about cores 24 and 30 are used, thereby enabling the wide formation of a magnetic communication circuit A without easy interruption by a spoke 7. Also, the magnetic flux which can be taken into a coil 51 increases and the sensitivity of magnetic communication can be improved.</p> |
