| 摘要 |
The method involves electromagnetically detecting metal objects with a device that outputs a variable output signal, converting the signal into an acoustic signal, setting a working point with a balancing device and differentiating the search objects according to their sizes by outputting output signals above and below the working point, converting signals above and below the working point into two acoustic signals and selecting them differently. The method involves electromagnetically detecting metal objects with a device that outputs a variable output signal, converting the signal into an acoustic signal, setting a working point with a balancing device and differentiating the search objects according to their sizes by outputting output signals above and below the working point, converting signals above and below the working point into first and second acoustic signals respectively and selecting them differently for reliable acoustic distinction. AN Independent claim is also included for the following: (a) a metal detector, especially for implementing the inventive method.
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