基于LabVIEW和声卡的数据采集同步控制系统  

Design of Synchronous Control System for Data Acquisition Based on LabVIEW and Sound Card

作　　者：陈国凡[1] 张炜[1] 杨洪涛[1] 张东速[1] 

机构地区：[1]安徽理工大学机械工程学院,安徽淮南232001

出　　处：《仪表技术与传感器》2012年第10期82-84,共3页Instrument Technique and Sensor

基　　金：国家自然科学基金资助项目(51075002)

摘　　要：要保证采用脉冲射流进行靶物探测时所采集的声音信号是脉冲射流冲击靶物时的反射声信号,需要实现数据采集触发和脉冲射流通断的同步控制。利用LabVIEW编制控制软件,应用声卡和设计的电磁阀控制电路,实现控制电磁阀开闭产生脉冲射流、反射声信号的采集存储,以及数据采集和脉冲射流喷射动作的准确同步配合。通过试验验证,同步控制信号与脉冲射流喷射之间的延迟时间最高为50 ms,可以满足利用脉冲射流靶物探测时对声音信号同步采集的要求。When the pulse water-jet is used to detect target,reflected sound signals should be acquired while impulsing target.It is necessary to synchronously control triggering of data acquisition and switching of the electromagnetic valve.By using programmed software,sound card and the designed electromagnetic valve control circuit,the electromagnetic valve can be switched reliably to create pulse water-jet,reflected sound signals be acquired and the precise synchronization of data acquisition and jetting of pulse water-jet can also be realized.The experimental result shows that the delay time from sending synchronous control signal to jettingpulse water-jet is less than 50 ms,and the requirements to data acquisition of sound signals when pulse water used to detect targets can be met effectively.

关 键 词：LABVIEW 声卡 同步控制 脉冲射流 电磁阀 数据采集 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]