摘要
核电站安全显示装置的电阻触摸屏和显示屏由于某些原因会发生偏移,需要进行校准。但是如何对校准后安全显示装置的精确度进行测试,目前尚无通用的测试方法。本文根据安全显示装置的特性,提出了一种基于网格划分区域的方法,将安全显示装置触摸屏的校准精确度由定量测试转化为定性测试,最后通过图形组态的方式实现了对校准精确度的测试。测试结果表明:该方法可以有效测试屏幕校准精确度是否满足设定值的要求,当屏幕发生偏移时,还可以定性分析偏移。目前,该方法已应用于阳江核电厂5号机组数字化保护系统的安全显示装置中,提高了系统的可靠性和安全性。
The resistance touch screen and display screen of the plant’s safety display devices are offset for some reason and need to be calibrated.However,there is no general method for testing the calibrated safety display device.According to the characteristics of the safety display device,this paper proposes a method based on grid dividing area,transforming the calibration precision of the safety display device screen from quantitative test to qualitative test,and realizes the calibration precision test by means of graphic configuration.The test results show that this method can effectively test the precision of the screen calibration,when the screen is offset,it can also qualitatively analyze the offset.At present,this method has been applied to the on-line calibration test of the safety display device of the digital protection system of Unit 5 of Yangjiang Nuclear Power Plant,which improves the reliability and safety of the system.
出处
《自动化博览》
2019年第11期68-71,共4页
Automation Panorama1
关键词
安全显示装置
电阻触摸屏
校准精确度
网格划分区域
Safety display device
Resistance touch screen:Calibration precision
Grid dividing area
