目 录
1 绪论..............................................................1
1.1 引言 ........................................................1
1.2 气体流量计分类 ..............................................1
1.3 涡轮番量计工作原理 ..........................................2
1.4 涡轮番量计特点 ..............................................2
1.5 本文研究内容 ................................................3
2 温压赔偿技术研究..................................................4
2.1 温压赔偿必需性 ..............................................4
2.2 赔偿原理 ....................................................4
3 涡轮番量硬件电路设计..............................................5
3.1 涡轮番量计硬件整体结构 ......................................5
3.2 单片机选择 ..................................................5
3.2.1 超低功耗...............................................5
3.2.2 强大处理能力...........................................6
3.2.3 高性能模拟技术及丰富片上外围模块.......................6
3.2.4 系统工作稳定...........................................7
3.3 电源电路 ....................................................8
3.4 流量测量电路 ................................................9
3.4.1 霍尔开关工作原理.......................................9
3.4.2 流量测量原理及电路.....................................9
3.5 温压检测电路 ...............................................10
3.5.1 温压传感器选择........................................11
3.5.2 2MS5535B 特征和功效 ...................................11
3.5.3 模块图和连接..........................................12
3.6 实时时钟 ...................................................13
3.7 显示部分 ...................................................14
