The Design Of Intelligent IC Card Gas Meter

With the coming of information society, IC card technology becomes a hot spot in the field of information industry because of its widely application and vast product market. Meanwhile, the manual gas meter reading is still adopted in gas charging, which seriously affects the resident's life. It is inconvenient, tiring and also with heavy workload, time-wasting, manpower-wasting, low efficiency, and disordered management, especially for the persons who don't pay their bills on time. Thus, the application of intelligent IC card has significant realistic meaning for the resident's life as well as for the gas charging management.This paper firstly analyses the present status of gas meter, the advantages and disadvantages in technology, then designs the intelligent IC card with the control core of 51 series SCM and supported by IC card.. The whole system consists of the choice and production of hardware, the design and test of software and co-test of hardware and software of the system.The hardware system mainly includes the followings:51 series SCM, the liquid crystal display, the test of gas flow signal, memory interface, and watchdog, IC card read-write, power testing, etc. The software mainly includes the followings:real time collection, accurate measurement, breakdown inquiry, power pressure testing, power failure data storage, valve actuation, read-write IC card, alarming display, etc.The co-testing of hardware and software of the system indicates that the system succeeds in real time gas collection signal, controlling the using status of the users, accurate measurement, displaying the left gas volume at real time and voice alarming in the shortage of gas, power testing, voice alarming of low battery voltage, power failure data storage, gas accumulation, value actuation, etc.The testing result and enterprise feedback show that each index of this gas meter has reached the expected goal. With the advantages of multi-function, steady work and high reliability, it meets the demand of the gas meter market.