微机控制配料系统中的全方位抗干扰的设计及实现  

The Design and Implement of All -round Anti -jamming Measures in Microcomputer - controlled Proportioning System

作　　者：刘阳[1] 王庸贵[1] 张燕[1] 沈显峰[1] 

机构地区：[1]四川大学制造科学与工程学院,成都610065

出　　处：《机电一体化》2004年第5期76-79,共4页Mechatronics

摘　　要：微机控制配料系统是水泥、化工、建材等行业配料工艺过程控制和质量控制的关键环节之一,而微机控制配料系统的精度是影响配料质量关键所在,因此,为提高微机控制配料系统的精度,必须采用全方位的抗干扰措施。从分析微机控制配料系统的干扰产生原因入手,论述了硬件滤波、过压保护、抗干扰稳压电源、对称输入、差动放大等硬件抗干扰措施,以及重复采集、重复输出、数字滤波、CPU抗干扰等软件抗干扰措施。实际应用表明,这些措施对提高微机控制配料系统精度具有很高的实用价值,并且对其他机电系统也有借鉴作用。The proportioning process is one of the key parts of proportioning process and quality control in cement, chemical engineering and architecture material industry. Then the microcomputer - controlled proportioning system precision is crucial to maintain the proportioning quality and quantity of products, so all - round anti jamming measures must be taken. Through having analyzed the jamming sources in microcomputer - controlled proportioning system, this paper presents several software measures, such as hardware filter, over - voltage protection, anti -jamming stable voltage power, symmetrical import, differential magnification and so on, and some hardware measures, for instance, repetitious acquisition and output, digital filter, etc. . Applications show that measures mentioned above are very useful to improve the precision of the microcomputer-controlled proportioning system and other mechanical & electronic system.

关 键 词：微机控制 配料系统 全方位 抗干扰措施 设计 工艺过程控制 关键环节 质量控制 过压保护 稳压电源 差动放大 重复输出 数字滤波 实用价值 系统精度 借鉴作用 机电系统 质量关 CPU 硬件 人手 软件 

分 类 号：TP273.5[自动化与计算机技术—检测技术与自动化装置]