Underground nonmetal pipeline detection system and method based on sound wave active excitation

The invention discloses an underground nonmetal pipeline detection system and method based on sound wave active excitation, and the system comprises a sound wave active excitation module which is used for applying excitation sound waves to a fluid in a to-be-detected pipeline; the array receiver module is used for receiving the excitation sound waves; the sound wave collecting and preprocessing module is used for collecting the received sound wave signals and preprocessing the sound wave signals; the pipeline trend calculation module is used for carrying out sound energy calculation and realizing detection of underground pipeline trend information; the pipeline depth calculation module is used for detecting the depth of the pipeline; and the power supply module is used for supplying power to the modules. According to the underground non-metal pipeline detection system based on sound wave active excitation, detection of the trend and depth of an underground non-metal pipeline is achieved through sound wave act