基于一种混频幅值算法的油气管道探测仪及应用
发布时间：2018-12-26 13:23
【摘要】：针对目前地下油气管道探测仪由于高采样率、高精度而造成功耗大的问题,引入一种混频幅值算法,使得探测仪接收机能够在远低于2倍发射频率的情况下完成采样并进行相应的地下油气管道埋深的计算。根据地下管道探测仪工作原理,被测信号为等幅正弦信号,将其与方波信号通过乘法器混合得到混频信号,再通过低通滤波回路得到频率更低的信号,其频率为方波信号与正弦波信号的频率差值。接收机采集该低频信号,并计算被测信号的强度幅值即可确定油气管道的埋深。经试验证明,当管道埋深在2 m以内时,用该方法探测油气管道深度的相对误差在±2%内,且接收机测得的感应电压幅值稳定可靠,能够满足地下油气管道探测的要求,同时还降低了功耗和成本,大幅提高了地下油气管道探测仪的性价比。
[Abstract]:In order to solve the problem of high power consumption caused by high sampling rate and high precision of underground oil and gas pipeline detector, an algorithm of mixing frequency amplitude is introduced. The receiver of the detector can complete the sampling and calculate the buried depth of underground oil and gas pipeline with a far less than 2 times transmitting frequency. According to the working principle of underground pipeline detector, the measured signal is equal amplitude sinusoidal signal, mixing it with square wave signal through multiplier to get mixing signal, and then getting lower frequency signal through low pass filter loop. Its frequency is the frequency difference between square wave signal and sine wave signal. The receiver acquires the low frequency signal and calculates the intensity amplitude of the measured signal to determine the buried depth of oil and gas pipeline. The experimental results show that when the depth of the pipeline is less than 2 m, the relative error of the method is within 卤2%, and the amplitude of the inductive voltage measured by the receiver is stable and reliable, which can meet the requirements of underground oil and gas pipeline detection. At the same time, the power consumption and cost are reduced, and the performance-price ratio of underground oil and gas pipeline detector is greatly improved.
【作者单位】： 中国矿业大学机电与信息工程学院;北京电子科技职业学院自动化工程学院;
【基金】：北京市教委科研基地-机电产品创新平台-智能地下管线探测器研制,PXM2014_014306_000065
【分类号】：TE973
，
本文编号：2392183
[Abstract]:In order to solve the problem of high power consumption caused by high sampling rate and high precision of underground oil and gas pipeline detector, an algorithm of mixing frequency amplitude is introduced. The receiver of the detector can complete the sampling and calculate the buried depth of underground oil and gas pipeline with a far less than 2 times transmitting frequency. According to the working principle of underground pipeline detector, the measured signal is equal amplitude sinusoidal signal, mixing it with square wave signal through multiplier to get mixing signal, and then getting lower frequency signal through low pass filter loop. Its frequency is the frequency difference between square wave signal and sine wave signal. The receiver acquires the low frequency signal and calculates the intensity amplitude of the measured signal to determine the buried depth of oil and gas pipeline. The experimental results show that when the depth of the pipeline is less than 2 m, the relative error of the method is within 卤2%, and the amplitude of the inductive voltage measured by the receiver is stable and reliable, which can meet the requirements of underground oil and gas pipeline detection. At the same time, the power consumption and cost are reduced, and the performance-price ratio of underground oil and gas pipeline detector is greatly improved.
【作者单位】： 中国矿业大学机电与信息工程学院;北京电子科技职业学院自动化工程学院;
【基金】：北京市教委科研基地-机电产品创新平台-智能地下管线探测器研制,PXM2014_014306_000065
【分类号】：TE973
，
本文编号：2392183
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