基于DSP的16通道声发射同步数据采集电路设计
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摘要
针对煤岩声发射信号监测系统的需求,采用16位定点DSP芯片TMS320VC5509A和高精度A/D转换器ADS1278设计了一种具有24位分辨率、16通道同步数据采集功能的数据采集电路。控制接口采用I2C接口扩展I/O的方式实现,数据接口采用McBSP接口以帧同步方式实现,2片ADS1278采用菊花链的方式级联。给出了硬件电路、底层软件和测试结果,该数据采集电路具有接口简单、高性能、低功耗、设置灵活等特点,已经应用于课题组研制的煤岩声发射监测系统中。
A data acquisition circuit with the function of 24-bit resolution,16-channel synchronous data acquisition is designed based on 16-bit fixed-point DSP TMS320VC5509A and high precision A/D converter ADS1278,aiming to be used in the monitoring system of coal-rock acoustic emission.The control interface is achieved by expanding I/O through I2C port,the data interface is realized by McBSP port working in frame-sync format,and two chips of ADS1278 are connected together in daisy chain.Hardware circuit,bottom-layer software and testing results are given in the paper.This circuit owns several advantages,such as,simple interface,excellent performance,low power and flexible settings,etc,and it has been applied in the monitoring system of coal and rock acoustic emission developed by our group.
A data acquisition circuit with the function of 24-bit resolution,16-channel synchronous data acquisition is designed based on 16-bit fixed-point DSP TMS320VC5509A and high precision A/D converter ADS1278,aiming to be used in the monitoring system of coal-rock acoustic emission.The control interface is achieved by expanding I/O through I2C port,the data interface is realized by McBSP port working in frame-sync format,and two chips of ADS1278 are connected together in daisy chain.Hardware circuit,bottom-layer software and testing results are given in the paper.This circuit owns several advantages,such as,simple interface,excellent performance,low power and flexible settings,etc,and it has been applied in the monitoring system of coal and rock acoustic emission developed by our group.
引文
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[4]周凤星,程耕国,汪道林,等.基于声发射的地震、山体滑坡监测诊断系统的应用研究[J].微计算机信息,2005(18):75,98-99.ZHOU Feng-xing,CHENG Geng-guo,WANG Dao-lin,et al.The monitors and diagnoses systematic application study in earthquake and landslide based on acoustic emission technique[J].Control&Automation,2005(18):75,98-99.
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[6]赵洪亮,卜凡亮,黄鹤松,等.TMS320C55x DSP应用系统设计[M].2版.北京:北京航空航天大学出版社,2010.
[7]Texas Instruments Incorporated.Quad/Octal,Simultaneous Sampling,24-Bit Analog-to-Digital Converters(Rev.F)[EB/OL].2011.http://www.ti.com/lit/ds/symlink/ads1278.pdf.
[8]Texas Instruments Incorporated.Remote16-Bit I2C and SMBus Low-Power I/O Expander(Rev.I)[EB/OL].(2008).http://www.ti.com/lit/ds/symlink/pca9535.pdf
[9]Texas Instruments Incorporated.Low-Noise,Very Low Drift,Precision Voltage Reference(Rev.E)[EB/OL].(2010).http://www.ti.com/lit/ds/symlink/ref5025.pdf
[10]龚树超,赵振纲,刘佳,等.基于TMS320C5509的DSP数据采集器设计[J].无线电工程,2009,39(11):22-25.GONG Shu-chao,ZHAO Zhen-gang,LIU Jia,et al.Design of data acquisition system based on TMS320C5509DSP[J].Radio Engineering,2009,39(11):22-25.
[11]乐焕白,郭莉,李惠琴,等.用IP-SAN技术构建存储灾备系统方案研究[J].陕西电力,2009(1):36-39.YUE Huan-bai,GUO Li,LI Hui-qin,et al.Study on building scheme of storage disaster recovery system using IP-SAN technology[J].Shaanxi Electric Power,2009(1):36-39.
[2]潘一山,赵扬锋,官福海,等.矿震监测定位系统的研究及应用[J].岩石力学与工程学报,2007,26(5):1002-1011.PAN Yi-shan,ZHAO Yang-feng,GUAN Fu-hai,et al.Study on rockburst monitoring and orientation system and its application[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(5):1002-1011.
[3]熊庆国,贺风云.数字式声发射检测仪的设计[J].工矿自动化,2004(3):25-27.XIONG Qing-guo,HE Feng-yun.Design of digital detector of sound emission[J].Industry and Mine Automation,2004(3):25-27.
[4]周凤星,程耕国,汪道林,等.基于声发射的地震、山体滑坡监测诊断系统的应用研究[J].微计算机信息,2005(18):75,98-99.ZHOU Feng-xing,CHENG Geng-guo,WANG Dao-lin,et al.The monitors and diagnoses systematic application study in earthquake and landslide based on acoustic emission technique[J].Control&Automation,2005(18):75,98-99.
[5]王纪强.基于DSP的微地震数据采集仪的研制[D].山东:山东科技大学,2005.
[6]赵洪亮,卜凡亮,黄鹤松,等.TMS320C55x DSP应用系统设计[M].2版.北京:北京航空航天大学出版社,2010.
[7]Texas Instruments Incorporated.Quad/Octal,Simultaneous Sampling,24-Bit Analog-to-Digital Converters(Rev.F)[EB/OL].2011.http://www.ti.com/lit/ds/symlink/ads1278.pdf.
[8]Texas Instruments Incorporated.Remote16-Bit I2C and SMBus Low-Power I/O Expander(Rev.I)[EB/OL].(2008).http://www.ti.com/lit/ds/symlink/pca9535.pdf
[9]Texas Instruments Incorporated.Low-Noise,Very Low Drift,Precision Voltage Reference(Rev.E)[EB/OL].(2010).http://www.ti.com/lit/ds/symlink/ref5025.pdf
[10]龚树超,赵振纲,刘佳,等.基于TMS320C5509的DSP数据采集器设计[J].无线电工程,2009,39(11):22-25.GONG Shu-chao,ZHAO Zhen-gang,LIU Jia,et al.Design of data acquisition system based on TMS320C5509DSP[J].Radio Engineering,2009,39(11):22-25.
[11]乐焕白,郭莉,李惠琴,等.用IP-SAN技术构建存储灾备系统方案研究[J].陕西电力,2009(1):36-39.YUE Huan-bai,GUO Li,LI Hui-qin,et al.Study on building scheme of storage disaster recovery system using IP-SAN technology[J].Shaanxi Electric Power,2009(1):36-39.
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