计算机联锁中安全编码编程器的设计与实现 |
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引用本文: | 刘培顶,陈荣武,王黎敏,陈忱.计算机联锁中安全编码编程器的设计与实现[J].铁路计算机应用,2015,24(10):47-50. |
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作者姓名: | 刘培顶 陈荣武 王黎敏 陈忱 |
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作者单位: | 西南交通大学 信息科学与技术学院,成都 610031 |
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摘 要: | 在部分计算机联锁系统中,输入和输出采用安全编码的方式来保证采集和驱动的安全性。安全编码需事先固化到安全输入/输出板的Flash存储器中,输入/输出板通过读取安全编码的状态来判断系统是否正常工作。为此设计了使用C8051F020单片机作为控制器的编程器,并基于Qt设计了上位机程序来实现对输入/输出板上28F128J3F75 Nor Flash的操作,包括自动识别输入/输出板、读/写安全编码等。在文中详细介绍了系统结构、硬件连接、软件设计以及上位机读/写安全编码的数据格式定义。
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关 键 词: | 计算机联锁 安全编码 C8051F020 28F128J3F75 Qt |
收稿时间: | 2015-01-24 |
Secure coding programmer for Computer-based Interlocking System |
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Institution: | School of Information Science and Technology, Southwest Jiaotong University, Chengdu 610031, China |
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Abstract: | In some kinds of Computer-based Interlocking System, secure coding was used for input and output to guarantee the safety of acquisition and driving. Secure coding should be programmed into the safety input/output board’s Flash memory previously. According to the state of security coding, the input/output board determined whether the system worked properly. The paper designed a programmer which used 80C51F020 single-chip microcomputer as its controller, and also designed the PC program based on Qt to implement the operation of 28F128J3F75 Nor Flash chip, including input / output board of automatic identification, read / write secure coding, etc. It was described the system architecture, hardware connections, software design and the data format definition of PC program reading or writing secure coding in detail. |
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