一种基于虚拟仪器技术的视频分析仪校准装置  

A Calibration Device for Video Analyzer Based on Virtual Instrument Technology

作　　者：刘雷[1] 徐书文[1] 韩正涛 陈鹏 韩东[1] LIU Lei;XU Shuwen;HAN Zhengtao;CHEN Peng;HAN Dong(CETC No.3 Research Institute,Beijing 100015,China)

机构地区：[1]中国电子科技集团公司第三研究所,北京100015

出　　处：《计量学报》2024年第10期1562-1569,共8页Acta Metrologica Sinica

基　　金：国家质量基础设施体系资助项目(2022YFF0604200)。

摘　　要：针对视频分析仪校准中主要标准器停产以及校准过程繁琐的问题,基于虚拟仪器技术,在LabVIEW开发环境下,利用M4i.6622-x8任意波形发生卡作为信号发生模块,开发了一种视频分析仪校准装置。实现了视频分析仪基本参数和失真参数的校准,给出了亮度电平、色度电平、色度相位等视频基本参数和行倾斜、k_(p)系数(2T脉冲k系数)、色度-亮度增益差、色度-亮度时延差、亮度非线性失真等视频失真参数的校准信号产生过程。经过实验,技术指标可达到如下:亮度电平为±0.2%,色度电平为±0.2%,色度相位为±0.1°,行倾斜为±0.1%,k_(p)系数为±0.1%,色度-亮度增益差为±0.2%,色度-亮度时延差为±3 ns,亮度非线性失真为±0.2%;优于TG2000可编程视频信号发生器,满足视频分析仪校准要求。In response to the issues of the main standard devices being discontinued and the cumbersome calibration process in the calibration of video analyzers,based on virtual instrument technology and in the LabVIEW development environment,a video analyzer calibration device was developed using the M4i.6622-x8 arbitrary waveform generation card as the signal generation module.The basic parameters and distortion parameters of the video analyzer were calibrated.The calibration signal generation process for Lum level,Chrom level,Chrom phase video basic parameters and Tilt,2 T Pulse k-factor,C/L Gain and Delay,Lum NL video distortion parameters were provided.By experiment,the technical indicators can achieve:Lum level is±0.2%,Chrom level is±0.2%,Chrom phase is±0.1°,Tilt is±0.1%,2 T Pulse k-factor is±0.1%,C/L Gain is±0.2%,C/L Delay is±3 ns,Lum NL is±0.2%.The technical indicators are better than the TG2000 programmable video signal generator,meeting the calibration requirements of video analyzers.

关 键 词：视频参量计量 虚拟仪器 视频分析仪 校准装置 任意波形发生卡 

分 类 号：TB973[一般工业技术—计量学]