次声波输油管道泄漏检测与定位系统优化

因受环境噪声干扰,输油管道泄漏检测与定位系统次声波传感器采集到的信号误差较大。为此,采用基于硬件的双传感器检测方法,对检测信号进行滤噪处理。具体方法是：在检测管道的两端分别安装两个同型传感器,一个作为测量传感器,一个作为补偿传感器,利用补偿传感器的输出结果和测量传感器的干扰量作用,使检测系统的输出结果不受被检测参数以外的干扰量影响,实现信号的补偿。系统优化后进行实验应用,计算泄漏点与设定泄漏点的误差为123 m,定位精度相对较高,验证了该方法的可行性。

Optimization of infrasound wave-based leak detection and positioning system for oil pipeline

Due to interference from ambient noise, signals acquired by infrasound wave sensors of oil pipeline leak detection and positioning systems are subject to large errors. To this end, hardware based dual-sensor detection methods are used to filter noises of detection signals. It is the specific method that two identical sensors are respectively installed at both ends of the detection pipeline, including one measuring sensor and one compensation sensor, and the output results of the compensation sensor and disturbance variable of the measuring sensor are used to make output results of the detection system not affected by the disturbance variables except for detected parameters so as to achieve signal compensation. Experimental application is made after system optimization, and the error between calculated leak point and set leak point is 123 m and positioning accuracy is relatively high, indicating feasibility of the method.