行车安全监控系统-测速子系统设计目录摘要.................................................................................................................................................IAbstract............................................................................................................................................II1.绪论...............................................................................................................................................12.系统方案设计...............................................................................................................................22.1系统需求分析.....................................................................................................................22.2系统设计方案.....................................................................................................................52.2.1时间间隔测量模块..................................................................................................62.2.2时序发生模块..........................................................................................................62.2.3GPS授时模块.........................................................................................................62.2.4电机码盘控制模块..................................................................................................72.2.5数据存储模块..........................................................................................................82.2.6信号调理模块..........................................................................................................82.2.7用户交互模块..........................................................................................................92.2.8核心控制模块..........................................................................................................92.3硬件平台的选型与概述.....................................................................................................93.激光雷达测距模块设计.............................................................................................................103.1时序发生模块...................................................................................................................103.1.1数据转换单元........................................................................................................113.1.2延时脉冲输出单元................................................................................................123.2时间间隔测量模块...........................................................................................................123.2.1电路设计................................................................................................................133.2.2硬件设计................................................................................................................133.2.3软件设计................................................................................................................143.3信号调理模块...................................................................................................................153.3.1放大电路................................................................................................................153.3.2整形电路.............................................
