仪表技术与传感器
儀錶技術與傳感器
의표기술여전감기
INSTRUMENT TECHNIQUE AND SENSOR
2015年
6期
41-43,74
,共4页
声发射%模数转换%数据采集
聲髮射%模數轉換%數據採集
성발사%모수전환%수거채집
acoustic emission%analog to digital conversion%data acquisition
为了提高声发射检测仪的采样精度和采样速率，提出一种基于FPGA和AD9226组成的多路数据采集处理模块。首先将传感器检测的信号进行放大、增益调节；再将调制后的模拟信号通过AD9226进行模数转换，同时将采集的多路数据存入SDRAM中；采集的数据可以通过无线方式送至上位主机进行数据分析处理。实验证明，该多路数据采集模块采样精度高，处理速度快，满足设计要求。
為瞭提高聲髮射檢測儀的採樣精度和採樣速率，提齣一種基于FPGA和AD9226組成的多路數據採集處理模塊。首先將傳感器檢測的信號進行放大、增益調節；再將調製後的模擬信號通過AD9226進行模數轉換，同時將採集的多路數據存入SDRAM中；採集的數據可以通過無線方式送至上位主機進行數據分析處理。實驗證明，該多路數據採集模塊採樣精度高，處理速度快，滿足設計要求。
위료제고성발사검측의적채양정도화채양속솔，제출일충기우FPGA화AD9226조성적다로수거채집처리모괴。수선장전감기검측적신호진행방대、증익조절；재장조제후적모의신호통과AD9226진행모수전환，동시장채집적다로수거존입SDRAM중；채집적수거가이통과무선방식송지상위주궤진행수거분석처리。실험증명，해다로수거채집모괴채양정도고，처리속도쾌，만족설계요구。
In order to improve the sampling precision and sampling rate of acoustic emission detector,a multi-channel data ac-quisition processing module based on FPGA and AD9226 was proposed.First,the detection signal from the sensor was amplified and gain adjusted.Then,the modulated analog signal implemented analog to digital conversion by AD9226,while the multi-channel data was stored in SDRAM.The data was sent to the host PC wirelessly,and was analyzed and processed.Experiments show that the multi-channel data acquisition module has high sampling accuracy,fast processing speed,thus meeting the design requirements.
