Fluxgate current detection device and fluxgate current detection method

The invention provides a fluxgate current detection device and a fluxgate current detection method, and the device comprises a power excitation module which is connected with an excitation induction module and is used for generating an excitation signal, so that the excitation induction module generates a periodic magnetic signal; the excitation induction module comprises at least two excitation induction sub-modules, each excitation induction sub-module comprises an excitation magnetic core and a winding surrounding the excitation magnetic core, and the time periods of excitation signals acquired by the at least two excitation induction sub-modules are different; the excitation induction module is also used for coupling a to-be-detected magnetic signal generated by an external current signal and the periodic magnetic signal so as to generate an output electric signal containing information of the external current signal; and the signal processing module is connected with the excitation induction module and i