Large -scale earth mat earth impedance measuring device based on GPS

The utility model discloses a large -scale earth mat earth impedance measuring device based on GPS, it includes the host computer and from quick -witted, the host computer is connected according to electric return circuit mode by controller module, power module, electric current source module, luo shi coil, electric current signal processing module, electric current zero -crossing detection module, voltage testing, voltage signal processing module, voltage zero -crossing detection module, GPS time service module, data storage module, wireless communication module, display module, button module, connect according to electric return circuit mode by controller module, power module, luo shi coil, signal processing module, zero -crossing detection module, GPS time service module, data storage module, wireless communication module, display module from the machine, the utility model discloses circuit design is simple, and low cost moves large -scale ground net ground connection characteristics such as power plant, transformer substation and provides safeguard for the refined calculation, has solved the accurate measurement and has shunted vectorial problem everywhere, and is automatic competent simultaneously, has reduced the surveying work volume.