Pulse Induction metal detector ?

Excuse me I want help in making Pulse Induction metal detector because I need in it in a minesweeper robot so any help Plz
Thanks a lot

I dunno.  This looks like a good one.

I found that via this Google image search

By the way, I am guessing you have a good reason for wanting this kind of metal detector, the pulse induction kind.   I think the other kind, based on a so called "beat frequency oscillator", those are easier to build and easier to get working.
I just noticed, that same site has a good overview of three different popular metal detector types (PI, BFO, and VLF), here: