目录
第1 章 电子仪表的优点
1.1 可靠性和耐用性 ..............................................................................................3
1.2 高精度 .............................................................................................................4
1.3 非线性负载和低功率因数(电表) .................................................................4
1.4 易于校准 .........................................................................................................4
1.5 防篡改保护 .....................................................................................................4
1.6 自动读表 .........................................................................................................5
1.7 安全性 .............................................................................................................5
1.8 先进的付费方式 ..............................................................................................5
1.8.1 分时付费 ......................................................................................................5
1.8.2 预付费 ..........................................................................................................5
第2 章 仪表类型
2.1 气表和水表 .....................................................................................................7
2.2 热表 ................................................................................................................7
2.3 电表 ................................................................................................................7
第3 章 仪表的功能部件
3.1 计时 ................................................................................................................9
3.2 传感器 ...........................................................................................................10
3.2.1 气表和水表传感器 ......................................................................................10
3.2.2 热表传感器 ................................................................................................10
3.2.3 电表传感器 ................................................................................................10
3.3 显示部件 .......................................................................................................13
3.3.1 LED ...........................................................................................................13
3.3.2 LCD ...........................................................................................................14
3.4 通信 ..............................................................................................................19
3.4.1 有线通信 ....................................................................................................19
3.4.2 无线技术 ....................................................................................................21
3.5 低功耗部件 ...................................................................................................24
3.5.1 交流稳压电源供电的仪表 ...........................................................................24
3.5.2 不稳定直流电源供电的仪表 .......................................................................27
3.6 校准...............................................................................................................28
3.6.1 气表和水表校准 .........................................................................................28
3.6.2 热表校准 ....................................................................................................28
3.6.3 电表校准 ....................................................................................................28
第4章 Microchip解决方案
4.1 气表 ..............................................................................................................31
4.2 水表 ..............................................................................................................32
4.3 热表 ..............................................................................................................33
4.4 电表 ..............................................................................................................34
4.5 资源 ..............................................................................................................35
4.6 网络课程 .......................................................................................................37
第5章 规范
5.1 水表 ..............................................................................................................39
5.2 热表 ..............................................................................................................39
5.3 电表...............................................................................................................39
[ 本帖最后由 wzt 于 2010-4-15 17:30 编辑 ]