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| 主动式I／O模块在高速工控场合的应用 | |
| 引用本文： | 陈安,曾启杰,颜春兰. 主动式I／O模块在高速工控场合的应用[J]. 计算技术与自动化, 2009, 28(1): 71-74 |
| 作者姓名： | 陈安 曾启杰 颜春兰 |
| 作者单位： | 1. 华南理工大学自动化科学与工程学院,广东,广州,510641 2. 广东工业大学自动化学院,广东,广州,510090 3. 广东粤安信息工程有限公司,广东,广州,510630 |
| 摘 要： | I／O板卡是PC—BASED类型工控应用中重要的外围设备。传统的I／O板卡功能单一，其用户态下的操作受到操作系统影响而具有不确定性。另外，其编程方法中对ISR的应用有一些局限，而其中断延迟在一些超高速的工控场合仍然无法满足要求。针对传统I／O板卡的局限性，提出“主动式”I／O模块的概念，描述其系统结构，讲解提高系统实时性能的机制。 |
| 关 键 词： | I/O板 中断服务程序 共享内存 |
Active I/O Module and its Application in Real- time Industry Control System |
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| CHEN An,ZENG Qi-jie,YAN Chun-lan. Active I/O Module and its Application in Real- time Industry Control System[J]. Computing Technology and Automation, 2009, 28(1): 71-74 | |
| Authors: | CHEN An ZENG Qi-jie YAN Chun-lan |
| Affiliation: | 1.College of Automation Science and Engineering;South China University of Technology;Guangzhou 510641;China;2.Guangdong University of Technology;Guangzhou 510090;3.Guangdong Yuean Information Technology Co.;Ltd;Guangzhou 510630;China |
| Abstract: | I/O board is an important peripheral of PC-BASED control system.conventional I/O board has some shortage in real-time industry control system: the operation time to it may be affected by the OS,the usage of ISR to it has some limits,the ISR delay can't meet some hard real-time cases.The paper introduce the active I/O module,describe the construction of it and explain how it enhance the real-time performance of control system. |
| Keywords: | I/O board interrupt service routine memory sharing |
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