摘要
介绍了一套利用CCD摄像头在LabVIEW平台上开发出的水液滴喷射图像采集及分析系统,具有稳定可靠、应用灵活等优点。该系统通过调用动态链接库驱动摄像头完成图像采集,实时监测液滴的运动情况,再利用IMAQ Vision完成图像的批量存储。保存的液滴图像将由Matlab软件进行分析处理,得到液滴大小、位置、间距等参数,可以定量地评估液滴喷射的质量和稳定性。实验采用80μm孔径金属喷嘴喷射出重复频率30 kHz的水液滴靶材,CCD摄像头以5 Hz频率采集到水液滴图像。图像经批量分析后可得出液滴直径约188μm,液滴之间平均间距约562μm,且各自标准差较小,液滴在喷射过程中能够稳定且均匀断裂。
a set of water droplet jetting image acquisition and analysis system using CCD camera on the platform of LabVIEW is proposed , with the advantage of stable and reliable performance and agility for application .The system drives the camera by calling the dynamic link library to complete the image acquisition , real-time monitoring the movement of droplets , and then uses IMAQ Vision to store the im-ages.The droplet images will be analysed by the Matlab software , obtaining the droplet size , position, spacing and other parameters , which can be used for quantitatively evaluating the quality and stability of liquid droplet jetting .The experiment uses the 80μm diameter metal nozzle and pure water as liquid ma-terial, with the repetition frequency of 30 kHz.The frequency of CCD camera to capture images of water droplets is 5 Hz.Analysis of the images indicates that the droplet diameter of about 188μm, the average spacing between the droplets is about 562μm with small deviations .Therefore , droplets can be jetting in stable and uniform condition .
出处
《工业仪表与自动化装置》
2015年第5期25-29,共5页
Industrial Instrumentation & Automation
基金
国家自然科学基金项目(11304235)
关键词
水液滴喷射
CCD摄像头
图像分析
LabVIEW
droplet jetting
CCD camera
LabVIEW
image analysis
