The design for electrical system of pre-payment gas meter with smart-card ABSTRACT Along with the expansion of the golden card engineering, the IC card conduct and actions among them main representative ,got the quick development. The IC card mainly is used for in the piping in the city,that the main purpose is a realization prepayable gas meter. It changed the old charges method, carried out the forerunner's calculator management, the customer can carry on the management by one's own, gas meter can manage the charges automatically. This project does research on Intelligent Card and gas meter control device which is the further explored to the practical application of IC technology and is also a reform in management system of gas charge. This project makes theoretical analysis and does technological applicable research on the structure, function and demand of technology on control device of IC for gas meter. According to the principle of lower cost, higher reliability, the design completes much work. The contents of project are as follows: (1) PIC Micro-controller which is lower-power and lower price is the core of control device. The whole circuit realizes the functions of collecting pulse, keeping data, driving electric machinery valve, reading and writing IC, detecting power supply, sound alarm and liquid crystal display. (2) The theory of fuzzy control resolves the control of electric machinery valve. The software design that is the module structure realizes the function of gas meter counting, inquiring and dealing with the malfunction.
Keywords PIC micro-controller Fuel Gas Meter Intelligent Card Electric machinery Fuzzy control