电表分时计费--本设计利用单片机控制普通电能表，实现分时计费的功能。本系统可以作为额外的模块安装到普通电能表，这样用户已安装的普通电能表不需要更换为新的电能表，仅仅另外安装了本系统后就可以作为一个标准的智能电能表使用。-TOU meter billing the use of single-chip microcomputer to control the design of the ordinary power meter, realize the functions of billing time. The system can be used as extra modules installed in the ordinary power meter, so that ordinary users have installed does not require the replacement of energy meter energy meter for the new, just another of the system after installation can be used as a standard the use of smart energy meter.