Design of a CPU-card-based Gas meter?

doi:10.3969/j.issn.1000-1565.2015.02.018

Abstract

Abstract: In this paper, aiming at the problem that the gas meter, equipped with logic encryption cards, lacked safety protection measures and poor encryption, a CPU-card-based gas meter was designed with the help of modular design method. The hardware included CPU card interface circuit, ESAM module circuit and LCD display circuit. The software mainly included internal authentication and external authentication. The whole system realized the information exchanging between gas meter and CPU card , information display with LCD ,valve control，gas flow checking, gas costs calculation and prepayment. User data of the gas meter was well improved.

Key words: gas meter, CPU card, ESAM module, certification

CLC Number:

TP273

MA Tao,GAO Yukang ,YANG Shuming. Design of a CPU-card-based Gas meter?[J]. Journal of Hebei University (Natural Science Edition), 2015, 35(2): 210-216.

References

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