According to IC card safe and convenient, the advantages of large storage capacity, to design a low-cost, high reliability, increased gas tariffs of the electronic management for the purpose, to complete the smart card IC pre-paid gas meter design.
Clarify the system structure and function of each module. Smart IC card gas meters from the hardware is a power modules, erasable read-only memory modules, IC card module, digital LCD module and gas sensors, modules, all of which are controlled by a microcontroller, to complete Data storage, liquid crystal display, gas sensors, alarm system, air consumption count, electromagnetic valve switch, IC card readers, and other functions. At the same time this paper, the software design process.
Key words AT89C51 microcontroller IC card electromagnetic valve modular structure