预付费电度表又叫做定量电能表、IC卡电度表，除了具有普通电能表的计量功能外，特别的是用户先买电，买电后才能用电，若用完电后用户不继续买电，则自动切断电源停止供电。
该方案兼顾了预付费电表和自动抄表的优点，通信可靠性高。
The scheme gives attention to both advantages of advance payment power meter and automatic meter reading system and has high communication reliability.
介绍了一种新型的智能卡预付费电表的原理、结构及软件设计。
The principle of a new smart card controlled pre-paid utility meter, its construction of system and software design has been introduced.
应用推荐