According to the safety requirements of underground electrical equipment , an excellent intrinsically safe pilot circuit is designed , the fault characteristics and protection principle of asynchronous motor with single speed and double speed used in underground are simultaneously analyzed , the function parameters corresponding to the fault protections for high capacity motors are determined . at the same time , module program design method and compiled monitoring program and function subprograms are emphatically described 根據礦井生產安全要求,設計了性能優良的本質安全型先導電路,分析了單速異步電動機和雙速異步電動機的各種故障特征和保護原理,確立了每種故障保護的動作指標,介紹了結構化程序的設計方法,設計了監控程序及各功能模塊程序。
In addition , according to the safety requirements of underground electrical equipment , the fault characteristics and protection principle of asynchronous motors with single speed or double speed used in underground are simultaneously analyzed , the function parameters corresponding to the fault protection for high capacity motors are determined . at the same time , module program design method and compiled monitoring program and function subprogram are emphatically described . especially , more attention is paid to the design philosophy , operation principle , hardware block diagram and software flow chart of mcs 根據礦井生產要求,分析了異步電動機的各種故障特征和保護原理,確立了每種故障保護的動作指標;設計了主控制板的硬件電路;根據結構化程序的設計方法,設計了監控程序和各功能模塊程序;并且分析了工業生產環境存在的干擾源及所產生干擾信號的特征,針對不同特征的干擾信號,制定了相應的硬件、軟件抗干擾措施。