| 摘要 |
A ferroprobe device comprises a flux gate, a second harmonic amplifier, a DC amplifier, an indicating device and power communication lines, a compensation flux gate, the total amount of flux gates is two, cores thereof have different sizes, also it comprises compensating second harmonic cancellation amplifier, DC amplifier and a compensating device. Additionally the main and compensating flux gates are used, which provided for additional signaling windings and located in parallel to the main and compensating flux gates respectively. Additional signaling windings of the main and compensating flux gates are connected to the auxiliary signaling winding of the main and compensating flux gates in a gradient circuit and connected to the first auxiliary main and compensating second harmonic amplifiers. The signaling windings of additional main and compensating flux gates are connected respectively to the second auxiliary main and compensating second harmonic amplifiers, the main, compensating and additional compensating second harmonic amplifiers are connected respectively to main and compensating amplitude detector, whose outputs are connected to the inputs of main and compensating adders, whose outputs are connected to the main and compensating DC amplifiers respectively. |
