Pipeline inspection device with enhanced image control
摘要
說明書
In some embodiments, the pipeline inspection device 10 may include a signal generating device or transmitter having a first, outgoing electrical cable and a second, return electrical cable. In some embodiments, the transmitter may be a separate device from the pipeline inspection device 10. The transmitter further includes an oscillator and amplifier to generate an alternating electrical signal through the first electrical cable. The signal is returned through the second electrical cable (ground or return path) resulting in current that generates an EM field around the signal path (i.e., along the first and second cable). The oscillator can generate a multitude of frequencies from below approximately 1 KHz to approximately 100 KHz. The user may select a frequency that overcomes conditions present within the buried pipeline, such as pipe conductivity and length, wet or dry ground conditions, etc.
