Portable ultrahigh-resolution multi-far electrode array electrical method measurement device and method

The invention relates to the field of high-density electrical methods, in particular to a portable ultrahigh-resolution multi-far electrode array electrical method measurement device and method. The device comprises a transmitting circuit, a node plate group, a far electrode plate and a receiving circuit, and the transmitting circuit provides 1A/24W direct current signals or amplitude 1A/24W square wave signals for the node plate group and the far electrode plate; the receiving circuit collects electric signals of the node plate group and the upper electrode of the far electrode plate; the node plate group comprises a matrix structure formed by x*y gusset plates, wherein each node plate comprises four node electrodes and twelve electrode change-over switches, every three electrode change-over switches control one node electrode to be respectively connected with the output end of the constant current source, the acquisition end of the receiving circuit and the ground end, and direct current or alternating curr