宽电压输入电能表及IC卡控制电路应用研究

Application Research of IC Card Control Circuit for Wide Voltage Input Meter

本文探讨了一种宽电压输入电能表及IC卡控制电路,其电能表电路包括微控制器、IC卡控制电路、计量电路、显示电路。宽电压输入电能表IC卡控制电路在工作时,将IC卡的到位信号输入到插卡检测电路,插卡检测电路一方面将低电平信号通过主板通讯接口传输到处理器;另一方面将到位信号输入到电源控制电路的控制端,此时电源控制电路工作,给IC卡提供电源。保证了内部电路的可靠运行,减少外部人为破坏的可能性。

This paper discusses a wide voltage input meter and IC card control circuit. The meter circuit includes micro con-troller, IC card control circuit, measuring circuit and display circuit. Wide voltage input electric energy meter IC card function at work will be in place to signal input card detection circuit of the IC card, a card detecting circuit of the low level signal transmitted through the communication interface to the processor board; the control end on the other hand will be in place input signal to the power control circuit, power control circuit, power supplied to the IC card. It ensures the reliable operation of the internal circuit and reduces the possibility of exte.