基于时延估计法的泄漏噪声定位试验研究
|
摘要
针对电站锅炉炉管泄漏问题,对基于时延估计法的定位方法进行了试验研究.通过外放高频声音信号模拟炉管泄漏信号,采用互相关算法估计两两通道间的时延值,根据距离公式建立定位方程,采用牛顿迭代法对其求解,获得泄漏点位置.试验结果表明:当声源为脉冲信号时,时延估计值很准确,当声源为连续周期声源信号时,时延估计值最大在-T/2～T/2(声源信号的周期)范围内变化;在一定范围内,采样率越高,时延值精度越高,定位效果越好;相较于声速,采样率对定位结果的影响更大.
Aiming at the leakage problem of boiler tubes in power plants,the location method based on time delay estimation was studied. The leakage signal of the furnace tube was simulated by the external high-frequency sound signal,and the multi group delay value was measured by the cross-correlation algorithm. The location equation was established according to the distance formula,and then solved by Newton iterative method,by which the leakage point coordinate was obtained. The experimental results show that the time-delay is effective only for impulsive sound source signals,and when it is the continuous periodic source,the estimation of time-delay is in the range of-T/2～T/2(where T is the period of the source signal). In a certain range,the higher sampling rate results in the higher delay value precision and the better effect of location;when compared with the sound speed,the sampling rate has greater impact on the location results.
Aiming at the leakage problem of boiler tubes in power plants,the location method based on time delay estimation was studied. The leakage signal of the furnace tube was simulated by the external high-frequency sound signal,and the multi group delay value was measured by the cross-correlation algorithm. The location equation was established according to the distance formula,and then solved by Newton iterative method,by which the leakage point coordinate was obtained. The experimental results show that the time-delay is effective only for impulsive sound source signals,and when it is the continuous periodic source,the estimation of time-delay is in the range of-T/2～T/2(where T is the period of the source signal). In a certain range,the higher sampling rate results in the higher delay value precision and the better effect of location;when compared with the sound speed,the sampling rate has greater impact on the location results.
引文
[1]姜根山.锅炉管道泄漏声行为特性研究[J].华北电力大学学报,2006,22(3):1-3.JIANG G S.Study on acoustic behavior of boiler pipeline leakage[J].Journal of North China Electric Power University,2006,22(3):1-3.(In Chinese)
[2]安连锁,冯强,沈国清,等.电站锅炉管阵列内声传播特性及时延值测量[J].动力工程学报,2017,37(1):13-17.AN L S,FENG Q,SHEN G Q,et al.Acoustic propagation characteristics and time delay measurement in power plant boiler tube array[J].Journal of Chinese Society of Power Engineering,2017,37(1):13-17.(In Chinese)
[3]杨洋,褚志刚,倪计民,等.除自谱的互谱矩阵波束形成的噪声源识别技术[J].噪声与振动控制,2011,31(4):145-148.YANG Y,CHU Z G,NI J M,et al.Research on algorithm of sound source identification based on cross-spectral beamforming with exclusion of auto-spectrum[J].Noise and Vibration Control,2011,31(4):145-148.(In Chinese)
[4]褚志刚,杨洋.近场波束形成声源识别的改进算法[J].农业工程学报,2011,27(12):178-183.CHU Z G,YANG Y.Improved algorithm of near-field beamforming for sound source identification[J].Transactions of the Chinese Society of Agricultural Engineering,2011,27(12):178-183.(In Chinese)
[5]MICHEL U.History of acoustic beamforming[C]//1th Berlin Beamforming Conference.Berlin:DLR,2006:21-22.
[6]刘志刚,李录明,赵冬梅.现代谱估计法及应用效果[J].石油地球物理勘探,2009,26(1):5-9.LIU Z G,LI L M,ZHAO D M,Modern spectrum estimation method and its application effect[J].Oil Geophysical Prospecting,2009,26(1):5-9.(In Chinese)
[7]CAMPBELL W,SWINGLER D N.Frequency estimation performance of several weighted Burg algorithms[J].IEEE Transactions on Signal Processing,2002,41(3):1237-1247.
[8]CHEN J,BENESTY J,HUANG Y.Performance of GCC-and AMDF-based time-delay estimation in practical reverberant environments[J].Eurasip Journal on Advances in Signal Processing,2005,25(1):960-964.
[9]王宏禹,邱天爽.自适应噪声抵消和时间延迟估计[J].大连理工学报,1999,35(3):17-20.WANG H Y,QIU T S.Adaptive noise cancellation and time delay estimation[J].Journal of Dalian University of Technology,1999,35(3):17-20.(In Chinese)
[10]YI H,WU C N.A new moving sound source localization method based on the time difference of Arrival[C]//2010 International Conference on Image Analysis and Signal Processing.New York:IEEE,2010:118-122.
[11]郭俊成.基于传声器阵列的声源定位技术研究[D].南京:南京航空航天大学民航学院,2007:28-32.GUO J C.Research on acoustic source localization technology based on microphone array[D].Nanjing:College of Civil Aviation,Nanjing University of Aeronautics and Astronautics,2007:28-32.(In Chinese)
[12]王琳,姜根山,安连锁,等.炉内管道泄漏声检测与定位系统的研究现状[J].华东电力,2009,29(6):8-10.WANG L,JIANG G S,AN L S,et al.Research status of acoustic detection and location system for pipeline leakage in furnace[J].East China Electric Power,2009,29(6):8-10.(In Chinese)
[13]MUNGAMURU B,AARABI P.Enhanced sound localization[J].IEEE Transactions on Systems Man&Cybernetics Part B Cybernetics A Publication of the IEEE Systems Man&Cybernetics Society,2004,34(3):1526-1540.
[14]LUU G T,RAVIER P,BUTTELLI O.The generalized correlation methods for estimation of time delay with application to electromyography[C]//Proceedings of the 4th International Symposium on Applied Sciences in Biomedical and Communication Technologies Barcelona.Spain:International Sustainable Energy Planning and Management.2011:30-36.
[15]BENESTY J,CHEN J,HUANG Y.Microphone array signal processing[J].Journal of the Acoustical Society of America,2003,125(6):4097-4098.
[16]SONG K T,CHEN J L.Sound direction recognition using a condenser microphone array[C]//Proceedings of IEEE International Symposium on Computational Intelligence in Robotics and Automation.New York:IEEE,2003:1445-1450.
[17]JIANG W,CAI Z,LUO M,et al.A simple microphone array for source direction and distance estimation[C]//Proceedings of 20116th IEEE Conference on Industrial Electronics and Applications.New York:IEEE,2011:1217-1225.
[18]吴静,赵伟.适用于非同步采样的相位差准确测量方法[J].电网技术,2006,30(7):73-76.WU J,ZHAO W.Accurate Phase difference measurement method for asynchronous sampling[J].Power System Technology,2006,30(7):73-76.(In Chinese)
[19]李建民,赵鹏,侯文,等.基于相关理论的相位差算法的误差研究[J].中北大学学报(自然科学版),2009,30(6):616-619.LI J M,ZHAO P,HOU W,et al.Error study of phase difference algorithms based on relevant theory[J].Journal of North University of China(Natural Sciences Editon),2009,30(6):616-619.(In Chinese)
[2]安连锁,冯强,沈国清,等.电站锅炉管阵列内声传播特性及时延值测量[J].动力工程学报,2017,37(1):13-17.AN L S,FENG Q,SHEN G Q,et al.Acoustic propagation characteristics and time delay measurement in power plant boiler tube array[J].Journal of Chinese Society of Power Engineering,2017,37(1):13-17.(In Chinese)
[3]杨洋,褚志刚,倪计民,等.除自谱的互谱矩阵波束形成的噪声源识别技术[J].噪声与振动控制,2011,31(4):145-148.YANG Y,CHU Z G,NI J M,et al.Research on algorithm of sound source identification based on cross-spectral beamforming with exclusion of auto-spectrum[J].Noise and Vibration Control,2011,31(4):145-148.(In Chinese)
[4]褚志刚,杨洋.近场波束形成声源识别的改进算法[J].农业工程学报,2011,27(12):178-183.CHU Z G,YANG Y.Improved algorithm of near-field beamforming for sound source identification[J].Transactions of the Chinese Society of Agricultural Engineering,2011,27(12):178-183.(In Chinese)
[5]MICHEL U.History of acoustic beamforming[C]//1th Berlin Beamforming Conference.Berlin:DLR,2006:21-22.
[6]刘志刚,李录明,赵冬梅.现代谱估计法及应用效果[J].石油地球物理勘探,2009,26(1):5-9.LIU Z G,LI L M,ZHAO D M,Modern spectrum estimation method and its application effect[J].Oil Geophysical Prospecting,2009,26(1):5-9.(In Chinese)
[7]CAMPBELL W,SWINGLER D N.Frequency estimation performance of several weighted Burg algorithms[J].IEEE Transactions on Signal Processing,2002,41(3):1237-1247.
[8]CHEN J,BENESTY J,HUANG Y.Performance of GCC-and AMDF-based time-delay estimation in practical reverberant environments[J].Eurasip Journal on Advances in Signal Processing,2005,25(1):960-964.
[9]王宏禹,邱天爽.自适应噪声抵消和时间延迟估计[J].大连理工学报,1999,35(3):17-20.WANG H Y,QIU T S.Adaptive noise cancellation and time delay estimation[J].Journal of Dalian University of Technology,1999,35(3):17-20.(In Chinese)
[10]YI H,WU C N.A new moving sound source localization method based on the time difference of Arrival[C]//2010 International Conference on Image Analysis and Signal Processing.New York:IEEE,2010:118-122.
[11]郭俊成.基于传声器阵列的声源定位技术研究[D].南京:南京航空航天大学民航学院,2007:28-32.GUO J C.Research on acoustic source localization technology based on microphone array[D].Nanjing:College of Civil Aviation,Nanjing University of Aeronautics and Astronautics,2007:28-32.(In Chinese)
[12]王琳,姜根山,安连锁,等.炉内管道泄漏声检测与定位系统的研究现状[J].华东电力,2009,29(6):8-10.WANG L,JIANG G S,AN L S,et al.Research status of acoustic detection and location system for pipeline leakage in furnace[J].East China Electric Power,2009,29(6):8-10.(In Chinese)
[13]MUNGAMURU B,AARABI P.Enhanced sound localization[J].IEEE Transactions on Systems Man&Cybernetics Part B Cybernetics A Publication of the IEEE Systems Man&Cybernetics Society,2004,34(3):1526-1540.
[14]LUU G T,RAVIER P,BUTTELLI O.The generalized correlation methods for estimation of time delay with application to electromyography[C]//Proceedings of the 4th International Symposium on Applied Sciences in Biomedical and Communication Technologies Barcelona.Spain:International Sustainable Energy Planning and Management.2011:30-36.
[15]BENESTY J,CHEN J,HUANG Y.Microphone array signal processing[J].Journal of the Acoustical Society of America,2003,125(6):4097-4098.
[16]SONG K T,CHEN J L.Sound direction recognition using a condenser microphone array[C]//Proceedings of IEEE International Symposium on Computational Intelligence in Robotics and Automation.New York:IEEE,2003:1445-1450.
[17]JIANG W,CAI Z,LUO M,et al.A simple microphone array for source direction and distance estimation[C]//Proceedings of 20116th IEEE Conference on Industrial Electronics and Applications.New York:IEEE,2011:1217-1225.
[18]吴静,赵伟.适用于非同步采样的相位差准确测量方法[J].电网技术,2006,30(7):73-76.WU J,ZHAO W.Accurate Phase difference measurement method for asynchronous sampling[J].Power System Technology,2006,30(7):73-76.(In Chinese)
[19]李建民,赵鹏,侯文,等.基于相关理论的相位差算法的误差研究[J].中北大学学报(自然科学版),2009,30(6):616-619.LI J M,ZHAO P,HOU W,et al.Error study of phase difference algorithms based on relevant theory[J].Journal of North University of China(Natural Sciences Editon),2009,30(6):616-619.(In Chinese)