CAJ | 학술논문

二乘二取二安全控制平台包括二乘二取二逻辑运算单元,二取二开关量输入、输出单元,人机接口单元。逻辑运算单元由2块独立的CPU板构成二取二结构,2块CPU板通过板上硬件同步单元实现信息交互和同步,在软件上独立进行运算结果的比较,并通过第三方硬件比较器实现2块CPU板总线数据的实时校核,保证了双CPU比较的正确性。输入单元和输出单元中均设计了双套智能处理器,采用动态控制方式,在出现硬件故障时可导向安全侧。其中输入单元对现场继电器前后接点进行采集,输出单元输出采用双断方式,可实时检测板外混电情况。
이승이취이안전공제평태포괄이승이취이라집운산단원,이취이개관량수입、수출단원,인궤접구단원。라집운산단원유2괴독립적CPU판구성이취이결구,2괴CPU판통과판상경건동보단원실현신식교호화동보,재연건상독립진행운산결과적비교,병통과제삼방경건비교기실현2괴CPU판총선수거적실시교핵,보증료쌍CPU비교적정학성。수입단원화수출단원중균설계료쌍투지능처리기,채용동태공제방식,재출현경건고장시가도향안전측。기중수입단원대현장계전기전후접점진행채집,수출단원수출채용쌍단방식,가실시검측판외혼전정황。
Double 2 vote 2 safe control platform is composed of Human-Machine Interface Unit, double 2 vote 2 logic operation unit, 2 vote 2 logic input unit and output unit. 2 vote 2 logic operation unit ineludes two individual CPU boards, which compare the operation results with each other based on independent software design. One third-party hardware eomparator is added to further compare the buses data of the two boards in a real time manner. Each of the input unit and output unit include dual processors working in dynamic mode on its own boards, which is fail-safe in hardware. The input unit monitors both of the open and close contacts of field relays and the outout unit drive.