1、INTELLECTUAL IC CARD GAS METER IMPLEMENTATION Author and Presenter: Matthew, Kerry Ray IC card reader Acoustical Society of America Journal, Volume 111, Issue4, pp. 1516-1516 (2002). As the development of the worldwide computer and information technology, the global information era has come. Every c
2、ountry is taking actions for its development in high technology fields. Chinese government is also dedicating itself to build an information-based national economy； while application projects represented by Gold Card Project speeds up our pace in moving towards international economic integration. As
3、 the representative of Gold Card Project, IC technology is no doubt the most excellent application technology. It transits from the earliest coin box type into magcard type and later into current IC card type. IC card, whose shape is similar to the magcard covering magnetic stripe, is an intellectua
4、l card (also named integrated circuit card), which embeds an integrated circuit chip into a plastic substrate and seals it into the form of card. The main purpose to develop IC card technology is to realize the electrical cash payment, deposit and exchange, to reduce the turnover of cash and to real
5、ize e-commerce and prepayment of public utility etc. IC card natural gas meter is a new-style gas meter developed in recent several years, consisting of metered sensor circuit, MCU of low power consumption, valve of low power consumption, voltage testing circuit, circuit of guarding against gas thef
6、t, flow monitoring circuit, and so on. Compared with the traditional involucra gas meter, more functions such as accurate counting, transmission medium function of intellectual card, automatic processing of the valve, illegal operation processing, under-voltage processing, power down processing, dat
7、a downloading, data display, and voice prompt are added to this new type. IC card technology is becoming more and more mature through manufacturers years of effort made on the improvement and renovation and its more and more widely used. IC card gas meter basically solved the difficult problem of ch
8、arging for the use of gas. Meanwhile, the progressing of the times, the enhancing of residents democratic consciousness and the improving of the living standard also challenge the traditional methods to collect fees which supplies gas first, then send some persons to each residence to get the readin
9、gs of the meters and get payment later. The popularization of IC card technology has substantially solved the problems mentioned above, taking the interests of both providers and customers into consideration at the same time. For providers, three difficult problems are solved： Visiting the customers
10、 to write down the amount of gas being used, urging the customers to pay, and the dissension between providers and customers. For customers, three problems are also solved： Disturbance made by the people who make an appointment with users and mean to visit users to record the gas consumption, restra
11、ined use of gas, and restriction of local government charge. This not only provides customers with convenience, but also diminishes the economic cost of providers. IC card gas meter will dominate the market of gas meter in the future. Statistics in recent years indicates that the domestic safety and
12、 precaution products develop rapidly at a compound annual growth rate of 20%-30%. The cumulative annual production value of safety and precaution products is 30-40 billion. Take Beijing area as an example, the absorption of safety and precaution market was just 0.5 billion in 1996 and 0.625 billion
13、in 1997, while in 1998 the popularization of finance networking made the absorption of market soar to 1.36 billion and in 1999 it was 0.92 billion. In recent years it remains more than 1 billion. Since the entire infrastructure for Olympic Games should be completed before 2006, authorities point out
14、 that the period between 2004 and 2005 will offer numerous business opportunities for the manufacture, distribution and engineering installation of safety and precaution products, and the market will reach a new peak. In developed countries, the orientation of safety and precaution products is netwo
15、rked and wireless, which will also be our development orientation. Presently many domestic safety and precaution products have developed into wireless ones, such as various detectors and vidicons, but yet technique leaves much room to desire. Performing networked safety and precaution has more strat
16、egic significance. The profit pattern should shift from the existing distribution and installation to security service to pursue more extra value and network will be the only way. Thus it can be seen that safety and precaution technique still has a long way to go. This document aims to prompt the ap
17、plication of SPMC65 family MCU so that Sunplus 8-bit MCU can reinforce the development of domestic safety and precaution industry. System Introduction The intellectual IC card gas meter is composed of a power supply circuit, an IC card read/write circuit, a microcontroller, a control valve, a displaying module, and a battery box position detector.
