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案例頻道作者：北京廣利核系統工程有限公司 李瑞秀，首云旭
摘要：核電站安全顯示裝置的電阻觸摸屏和顯示屏由于某些原因會發生偏移，需要進行校準。但是如何對校準后安全顯示裝置的精確度進行測試，目前尚無通用的測試方法。本文根據安全顯示裝置的特性，提出了一種基于網格劃分區域的方法，將安全顯示裝置觸摸屏的校準精確度由定量測試轉化為定性測試，最后通過圖形組態的方式實現了對校準精確度的測試。測試結果表明：該方法可以有效測試屏幕校準精確度是否滿足設定值的要求，當屏幕發生偏移時，還可以定性分析偏移。目前，該方法已應用于陽江核電廠5號機組數字化保護系統的安全顯示裝置中，提高了系統的可靠性和安全性。
關鍵詞：安全顯示裝置；電阻觸摸屏；校準精確度；網格劃分區域
Abstract: 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.
Key words: Safety display device；Resistance touch screen；Calibration precision；Grid dividing area
摘自《自動化博覽》2019年11月刊
北京市公安局海淀分局備案號：11010802023656號