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 根据矿井生产要求，分析了异步电动机的各种故障特征和保护原理，确立了每种故障保护的动作指标；设计了主控制板的硬件电路；根据结构化程序的设计方法，设计了监控程序和各功能模块程序；并且分析了工业生产环境存在的干扰源及所产生干扰信号的特征，针对不同特征的干扰信号，制定了相应的硬件、软件抗干扰措施。
Then , the circuits of this instrument ’ s hardware are illustrated in this paper , such as cpld interface , extended memory circuit , real - time clock , and touch screen interface , etc . on the software , the realization of the main program and the subprograms such as display , touch keys and interrupt , are introduced with some flow charts 软件使用汇编语言开发完成,使用模块化设计,主要分为主程序、显示程序、按键程序、中断响应程序几个部分。最后在抗干扰方面,本装置在硬件和软件方面都使用了多种抗干扰设计方法手段,提高了装置的稳定性。
In the part of detector , it mainly introduces the design of liquor tubes , heater , pressurize , and thermocouple ; in the part of controller , this design uses tms320lf2407 as the cpu . the design part mainly introduces controller circuit design which mainly contains data collection circuit , prepositive magnifying circuit , a / d convert circuit , failure self - diagnosis circuit , the tms320lf2407 interface circuit , temperature control circuit , display circuit , 4 ~ 20ma standard signal output circuit ; in the software part , it mainly introduces software chart of main program and partly linearization subprogram design 检测器部分重点介绍了导流管的设计、加热器的设计、密封技术的设计以及测温电路的设计;控制器部分以tms320lf2407为核心,重点介绍了控制器电路设计,主要包括数据选择电路、前置放大电路、 a / d转换电路、故障自诊断电路、 tms320lf2407接口电路、控温电路、显示电路、 4 20ma标准信号输出电路共八个部分;软件设计重点介绍了主程序软件设计及分段线性化子程序设计。
