| 摘要 |
<p>PURPOSE:To prevent unnecessary data from being inputted by putting a pulse generating circuit in an operation stop state when it is decided that reception intensity found from the received signal of a reflected wave is less than specific permissible reception intensity. CONSTITUTION:The buried body detecting device sets the reception intensity corresponding to the 0.24 intensity rate of the reflected wave in, for example, a comparator 15 as the permissible reception intensity. Then when the intensity rate WRP of the maximum amplitude intensity in the range of the arrival time Tc+ or -DELTAT of the received reflected wave is less than 0.24, an electromagnetic wave transmission stop switch 16 holds an initialized recovery state and the transmission of an electromagnetic wave is carried on. When the intensity rate WRP of the maximum amplitude intensity in the range of the arrival time Tc+ or -DELTAT of the received reflected wave is equal to or less than 0.24, the electromagnetic wave transmission stop switch 16 operates to disconnect a pulse generating circuit 11, stopping the transmission of the electromagnetic wave. Consequently, unnecessary data is prevented from being inputted.</p> |
