基于CAN总线的多点式SPC系统设计与实现  

Design and realization of multi-point data acquisition SPC system based on CAN bus

作　　者：马绍良[1] 李凤保[1] 张柏林[1] 

机构地区：[1]中国工程物理研究院计算机应用研究所,四川绵阳621900

出　　处：《微计算机信息》2008年第31期42-44,共3页Control & Automation

摘　　要：文中提出一种基于CAN总线的多点式数据采集和SPC系统,并介绍了SPC数据采集盒(SPC-Keyboard)硬件原理和CAN总线防冲撞通讯的设计;引入可标定控制线实现非稳态情况下由于控制线波动对异常因数判定的影响。通过实际应用,验证了该系统设计和实现的正确性和可靠性。This paper presents a system design of multi-points data acquisition and SPC based on CAN bus, and introduces the hardware design theory of SPC data acquisition boxes （SPC-Keyboard） and the design of anti-collision communication based on CAN bus. Because the Control-line of Control-chart is easy to be fluctuated and some abnormal factor can not be found in precarious sta- tus, the design method is introduced to watch the abnormal factor in control-chart by using fixed Control-line. The practical applica- tion has confirmed that the system is accurate and reliable under this design framework

关 键 词：CAN总线 数据采集 统计过程控制 六西格玛 实时诊断 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TP274.5[自动化与计算机技术—控制科学与工程]