| 摘要 |
PURPOSE: A power line path detection method using a current impulse signal is provided to detect a high pressure or low pressure power line only by the generation of a zero crossing point, thereby improving safety. CONSTITUTION: An upper line or a neutral line is composed separately from a detection target line to minimize the interference of a magnetic field signal due to an imbalance of a detection current. The upper line and the neutral line prevent mutual interference of the magnetic field signal by balancing the detection current in the unknown section of the power line. The impedance of the upper line or the neutral line of the detection target is respectively measured through the upper line or the neutral line which are individually provided. [Reference numerals] (AA) Transformer, switch; (BB) Ground detection; (CC) Low voltage terminal; (DD) Upper line; (EE) Neutral line; (FF) Current impulse generating device(terminal device); (GG) Low voltage phase power supply(Hot)
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