Abstract
This paper gives a solution of prepayment and software design in the intelligent electric meter. Firstly introduces the development and the future trend of the meter, the overall design scheme is given, a software platform built. Then the design of the CPU IC card circuit, IC card processing program, and the main program, real-time power program and electricity consumption measurement program are also designed. System uses LPC2290 as the main control chip, using ADI company ADE7755 electric energy metering chip, the software uses the modular design, not only can realize the measurement of electric energy, but also can accomplish the communication with the host computer, easy to build energy platform for energy management and control etc.
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