[1]孙志林,包亚萍,石峥映,等.多采样率超声数字信号处理方法的研究与应用[J].南京师范大学学报(工程技术版),2008,08(04):163-166.
　Sun Zhilin,Bao Yaping,Shi Zhengying,et al.Research and Application of Multi-Sampling Rate of Ultrasonic Digital Signal Processing[J].Journal of Nanjing Normal University(Engineering and Technology),2008,08(04):163-166.
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多采样率超声数字信号处理方法的研究与应用
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南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
08卷
期数:
2008年04期
页码:
163-166
栏目:
出版日期:
2008-12-30

文章信息/Info

Title:
Research and Application of Multi-Sampling Rate of Ultrasonic Digital Signal Processing
作者:
孙志林1;  包亚萍1;  石峥映2;  梅劲松3
1. 南京工业大学信息科学与工程学院, 江苏南京210009; 2. 南京拓控信息科技有限公司, 江苏南京210019;
3. 南京航空航天大学自动化学院, 江苏南京210016
Author(s):
Sun Zhilin1; Bao Yaping1; Shi Zhengying2; Mei Jinsong3
1.College of Information Science and Engineering,Nanjing University of Technology,Nanjing 210009,China;2.Nanjing Tycho Information Technology Co.,Ltd.,Nanjing 210019,China;3.College of Automation Engineering,Nanjing University of Aeronautics and Astronaut
关键词:
多采样率;  超声检测;  抽取;  插值
Keywords:
mu lt-i sam pling rate;  u ltrason ic testing;  extraction;  interpo la tion
分类号:
TN911.72
摘要:
在铁路车轮(机车、车辆、动车组等走行部车轮)通过式压电超声波在线探伤中,由于在线检测车轮数量多,硬件采样频率高,因而超声回波数据量很大,数据传输与分析处理时间较长.为提高数据处理效率,有必要对超声信号进行采样率转换以改变原始数据量;本文从超声检测信号的特点出发,研究了超声数字信号的抽取与插值算法并在CPLD上实现了采样率转换,降低了数据冗余,提高了系统处理效率,在实际应用中验证了该方法的有效性和可靠性.
Abstract:
In the piezoe lectric ity u ltrasonic on- line testing fo r ra ilw ay wheels ( inc luded wheels of locom otive, veh ic le, mu ltip le un it tra ins, etc. ), the amount o f acquired ultrason ic da ta can be very large, and the tim e o f transm it and process can be long, because of the large number of whee ls and the high hardw are sam ple rate for on- line testing. So in o rder to prom ote the effic iency, it is necessa ry to change the sam ple rate for u ltrasonic signa l to shift the am ount of or ig-i nal data. In th is pape r, the features o f u ltrasonic data arem entioned, the d ig ita l signa l ar ithme tic of ex traction and interpolation are researched and the samp le rate change is imp lemented on the CPLD, the data redundancy are dec lined and the system process effic iency a re enhanced, and the applications show that the proposed m ethod has h igher va lidity and re liability.

参考文献/References:

[ 1] 罗军辉, 罗勇江, 白义臣, 等. M atlab71 0在数字信号处理中的应用[M ]. 北京: 机械工业出版社, 2005: 121-129.
Luo Junhu,i LuoYong jiang, Ba iY icheng, et a .l TheApplication ofM atlab710 in the D ig ita l Signa l Processing [M ]. Beijing:ChinaM ach ine Press, 2005: 121-129. ( in Ch inese)
[ 2] 张贤达. 现代信号处理[M ]. 2版. 北京: 清华大学出版社, 2002.
Zhang X ianda. M odern Signa l Process ing [M ]. 2nd ed. Be ijing: Ts inghua University Press, 2002. ( in Ch inese)
[ 3] X ilinx Co. The Programm able Log ic Data Book[ Z]. X ilinx Co, 2006.
[ 4] 郭成彬, 蒋危平. 认识数字超声探伤仪[ J]. 无损检测, 2004, 26( 3) : 149-154.
Guo Chengb ing, JiangW e ip ing. A cqua intancesh ip o f d ig ita l ultrason ic testing instrum en t [ J]. Non-destruc tive Testing, 2004,26 ( 3): 149-154. ( in Chinese)
[ 5] 常晓明. Ver ilog-HDL 实践与应用系统设计[M ]. 北京: 北京航空航天大学出版社, 2003.
Chang X iaom ing. Practice and App lication System Design o fV erilog-H DL[M ]. Be ijing: BUAA Press, 2003. ( in Ch inese)

备注/Memo

备注/Memo:
通讯联系人: 包亚萍, 副教授, 研究方向: 信号处理. E-m ail:ngdbyp@ 163. com
更新日期/Last Update: 2013-04-24