Intelligent Detection of Groundwater Pipeline Leakage Points Based on Power Spectral Density
In order to find the problem of pipeline leakage in time and improve the detection accuracy,a method of detecting multiple leakage points of underground water pipeline based on underwater acoustic signal is proposed.Two voltage-type acceleration sensors are installed in the underground water pipeline,to collect the water leakage sig-nal,and the noise removal principle of FIR filter device is analyzed according to the impulse response function and difference equation,and its internal operation is designed in combination with the equal-wave approximation and Re-mez algorithm to complete the noise removal process of the water leakage signal;The power spectral density is used to describe the distribution of signal frequency band and judge whether the water pipeline is leaking.If there is leakage,the location of the leakage point is determined according to the signal delay difference and its propagation speed in the pipeline.The simulation results show that the proposed method has good noise removal effect,can effectively detect the location of water leakage point in the outlet pipe,and has high detection accuracy,short time,and can be widely used.
Water leakage signal acquisitionUnderground water pipelineVoltage type acceleration sensorSignal power spectrumLocation of water leakage pointSignal band
NETL
NSTL
万方数据
维普
