Alarm control method for inhibiting abnormity of analog input signal of DCS (Distributed Control System)

• Main Authors: CHEN YI, LI PENG, WANG XIN, ZHU JINYUAN, YANG TAO, HUANG BIAO, YUE XIAOGUANG, LI QIANG
• Format: Patent
• Language: Chinese; English
• Published: 30.12.2022
• Subjects: CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROLLING; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PHYSICS; REGULATING

The invention discloses an alarm control method for inhibiting abnormity of an analog input signal of a DCS (Distributed Control System), which is realized based on three delay modules in the DCS, a quality control module, a deviation calculation module, an RS trigger, a high-limit output module, a low-limit output module and a basic logic function block. And respectively constructing a suppression function area of the abnormity of the analog input signal and an alarm function area of a normal analog input signal, thereby realizing the control of the abnormity of the analog input signal. The design is reasonable and ingenious, the analog quantity data acquisition accuracy is improved through simple and reasonable combination of functional blocks, and the safety risk of triggering an alarm action by parameter jump is reduced. 本发明公开了一种抑制DCS系统模拟量输入信号异常的报警控制方法，基于DCS系统中的三个延时模块，以及品质控制模块、偏差计算模块、RS触发器、高限输出模块、低限输出模块、基本逻辑功能块实现，分别构建模拟量输入信号异常的抑制功能区和正常的模拟量输入信号的报警功能区，由此实现对模拟量输入信号异常包括控制。本发明设计合理、巧妙，通过简单、合理的功能块的组合提高了模拟量数据采集准确