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1 Introduction
The application of IC card technology is an important aspect of the national informatization work. The application of IC card in the construction industry is an integral part of the national gold card project and an important part of the informatization of the construction industry. In order to promote the development of IC card business in Jining City, after nearly ten years of unremitting efforts and bold practice, Jining Gas Company has established a reasonable gas pipeline network, a sound management information system, and developed more than 80,000 IC card gas meter users. Jining has made a significant contribution to the application and development of IC cards in the construction industry.
2 The development of IC card technology in my country
In 1993, the “Gold Card Project” focusing on the application of electronic money was officially launched in my country. The intelligent and easy-to-carry IC card, which was born in the 1970s, has rapidly spread and developed in my country, opening up a broad market for my country’s electronic information industry. Compared with magnetic cards that are still widely used at present, IC cards have many advantages such as high security and large storage capacity. It can carry up to 100 times more information than magnetic cards, and can be combined with terminals to perform complex calculations. The rapid development of IC cards has brought many economic growth points. The application of IC card system has rapidly expanded from the financial industry to many fields.
In recent years, the application of IC cards in the construction industry has developed to varying degrees in various industries. Among them, the application of IC cards in public transportation, water supply, gas and other fields has developed rapidly. More than 100 cities have established bus IC card application systems of different scales and levels, with a total of more than 20 million cards issued. More than 300 cities have used IC cards in the water supply and gas fields, with a total of more than 4 million IC card meters installed and more than 5 million cards issued. The application of IC cards in the field of residential property management, road and bridge toll collection, parking lot management and other fields has also made initial developments.
3 Features of IC card gas meter
The application of IC card technology in the gas industry is mainly reflected in the development and use of IC card gas meters. A new type of IC card gas meter is generally composed of a metering sensor, a micro-power controller, a micro-power valve, a voltage test circuit, an anti-theft circuit, and a flow monitoring. It has precise counting function, data exchange function, valve automatic control function, illegal operation processing function, undervoltage processing function, power failure protection function, data liquid crystal display and alarm sound prompt function, etc. After years of technological improvement and innovation by the majority of IC card manufacturers, IC card technology has become increasingly mature and its applications have become more and more popular.
4 Jining City Gas Construction Status
City gas is an important infrastructure for urban construction and an important part of modern urban energy construction. The development of urban gas business is an effective measure to save energy, protect the environment, facilitate people’s lives, promote industrial production, and improve the quality of industrial products. Social and economic benefits.
Jining Gas Company was established in 1982, with coke oven gas as the leading gas source. After more than 20 years of rolling development, the company has formed a comprehensive company focusing on gas transmission and distribution, integrating instrument R&D and production, real estate development, and engineering construction. At present, the number of residential users has grown to more than 140,000 households, the urban gasification rate is 92.6%, and the daily gas supply capacity is 180,000 m3. The main engineering project for the introduction of natural gas started in August last year. The ventilation was officially completed on the National Day in 2006 and was the first to be used for residential gas. By then, more than 140,000 households will bid farewell to the “gas age” and use clean, high-quality natural gas for boiling water and cooking.
5 Application status of gas meters
“Vigorously advancing the national economy and social informatization is a strategic measure covering the overall modernization drive. Informatization drives industrialization, leverages late-comer advantages, and realizes the leap-forward development of social productivity.” This is the country’s general policy for informatization construction, and it is also the purpose of the government’s vigorous promotion and promotion of industry informatization construction.
In response to the government’s call to promote the development of urban informatization in Jining City, Jining Gas Company established a complete data collection and monitoring system (three remote systems) as early as 1990. In 1996, it invested funds to establish Jining Lanwei Intelligent Network center, research and development, production and use of IC card gas meters. Jining Lanwei Intelligent Network Center is an outstanding representative of gas operating companies and scientific research units taking the road of cooperative development. In the past ten years, it has been developing along a healthy and stable trajectory. The main products are IC card civil gas meter, IC card industry, Gongfu gas meter and its supporting integrated business management system. As the earliest user of Jining Lanwei Intelligent Network Center, Jining Gas Company has used several generations of IC card gas meters since the end of 1996. So far, IC card users have exceeded 80,000.
Early IC card gas meters used external solenoid valves. This valve structure caused inconvenience to engineering installation. Since the application of IC card technology in the gas industry at that time was just starting, the product lacked pertinence and practicality in structure and function settings. As a transitional product, it was quickly eliminated.
The current new integrated IC card gas meter adopts dual measurement of electronic counter and mechanical technology counter. In the design of software and hardware, the requirements of gas companies and users are fully taken into account, and the function setting is more user-friendly. Set up 2 channels of air volume sensors, and only measure one unit of air volume when the 2 channels of pulse signals are detected in sequence, otherwise it is a malfunction. This unique double counting method guarantees the accuracy and reliability of the measurement and safeguards the interests of gas companies and users. The power supply for shutting the valve at power-down adopts a circuit design of super capacitor and electrolytic capacitor in parallel, which can ensure the shut-off valve in place when the user changes the battery or abnormal power-down, which enhances the anti-attack ability of the gas meter. In order to ensure the security of data, both the upper computer and the lower computer program adopt dynamic random encryption method, which can be followed by irregularities, which can prevent illegal users from gaining illegitimate benefits by stealing IC card passwords. The control part has the function of preventing gas accumulation, ensuring that the gas company’s economic interests will not be lost when the gas price changes.
The application of IC card technology in the gas industry includes the use of IC card smart terminals and supporting management systems. The management software used in the early stage was written in FoxPro, and the database was a small dBase desktop database. Only one gas sales terminal was set up in the gas company’s business center. With the widespread popularity of IC card meter users, we have upgraded the original management software and added 4 business outlets within the urban area of Jining. Users can purchase gas at nearby gas sales outlets with their cards. In order to promote the conversion of mechanical watches to IC card meters, we have added mechanical watch management and management of mechanical watches to IC card meters in the management system. The system has been running well for more than eight years. With the rapid development of computer and communication technology, information technology accounts for an increasing proportion of modern society, and gas companies are constantly expanding their business scale and improving service levels. Therefore, we adopt more advanced computer technology to establish a customer management information system (MIS) with the characteristics of the industry in view of the characteristics of the operation and management of the gas industry.
The overall structure of the system
5.3 Network structure
With the rapid development of the Internet, Web services are gradually entering the business scope of the urban construction management department. Based on the development needs of gas management business and the forward-looking design ideas of the system, the system adopts a general Browser/WebServer/multi-layer structure, which is distributed in various It is composed of client browser, WEB server and professional controls. In this way, on the one hand, gas companies can be distributed in different business outlets in the urban area to achieve centralized and unified management and data sharing; on the other hand, urban residents can query gas consumption information through the Internet.
The practice of reliable operation of the system in the past ten years has shown that the use of IC card gas meters has completely changed the traditional practice of gas companies through household meter reading, saving a lot of manpower and material resources, and at the same time increasing the safety of users. It not only facilitates users, but also reduces the burden and many problems of the gas supply department, simplifies operating procedures, promotes social development, improves the quality of life of the people, and reduces the economic cost of enterprises. Gas companies save a lot of bank loans by charging users’ gas fees in advance to achieve the goal of improving economic efficiency and better promote the development of urban pipeline gas business.
In the actual R&D and application of the past ten years, since we are both a R&D producer and an applicator, the following aspects are worth noting regarding the manufacture and application of IC card gas meters:
(1) The reliability of the valve
Valve is the key component of IC card gas meter. If its control fails, the IC card gas meter will lose its significance, and its anti-attack performance will be greatly reduced, which will seriously harm the interests of gas companies. This is also the main factor restricting the development of IC card technology in the gas, water supply, and heating industries. The valve structure, material and control principle design should fully consider its applicability to a variety of temperaments, micro power consumption, durability and reliability. Therefore, valve manufacturers are required to continuously improve product quality and provide high-quality supplies. IC card gas meter manufacturers must do a good job in the selection work when designing.
(2) IC card problem
The IC card is the link of information transmission between the gas meter and the management system. It must meet the requirements of data security, reliability, and convenient management. Its reliability is mainly reflected in two aspects of data storage and read-write reliability. The current IC cards mostly use contact logic encryption cards, the password verification process is not random, the password transmission process is in plain text, and the card password can be tested and analyzed online. The CPU card has a more secure authentication mechanism based on keys and security algorithms. The authentication process uses random numbers as the carrier, and the authentication code cannot be repeated and tracked. Therefore, the CPU card has higher security than the logical encryption card. In the future, the application of the IC card will develop in the direction of non-contact CPU card. In addition, convenience and practicability must be fully considered in the design of the management card type of the IC card gas meter, and the type of management card should be reduced as much as possible to avoid confusion in the management of the gas supply department.
(3) After-sales service level of IC card gas meter manufacturers
IC card gas meter manufacturers should cultivate a high-quality after-sales service team to provide convenient, timely, and thoughtful services when product quality problems occur. Jining Lanwei Intelligent Network Center is a subordinate unit of the gas company. It has a personal experience of the gas company’s needs. The function setting of the research and development products is aimed at the management characteristics of the gas industry and has the advantages of pertinence and strong practicability.
(4) The management level of the gas supply department
In order to promote the in-depth development of IC card technology, the gas supply department should work with IC card gas meter manufacturers to do a good job of technical training for employees, improve the quality of employees, coordinate the relationship with users, and promote IC card technical knowledge to the majority of users. Establish a gas customer service call center, improve the quality of corporate services, establish a corporate image, and reduce the resistance to the promotion of IC card technology. With the gradual improvement in the understanding of IC card meters, gas companies must choose products with stable quality and advanced technology when choosing IC card meters, and at the same time fully consider after-sales service factors, and choose a viable supplier. We should not be discouraged from IC card meters and give up the pursuit of advanced technology just because the quality of a certain manufacturer’s products is not good enough. In addition, although the use of IC card meters simplifies the working procedures of gas companies, the issuance of IC cards and the management of keys are related to the economic interests of the company, and internal management must be strengthened.
(5) Uniformity and compatibility of IC card gas meters
The successful application of IC card technology to gas metering instruments is an innovation in gas metering management and has improved the modern management level of gas supply enterprises. There are about dozens of IC card gas meter manufacturers across the country. However, due to their different starting points and different points of focus, the types of IC cards and data formats used are different, and the products produced are different in function, good and bad, which make the gas supply The department’s autonomy in selecting products is reduced, and IC card gas meter manufacturers should propose reasonable solutions for the uniformity of IC card gas meters. In addition, the compatibility of the product should be fully considered when the product is updated. Otherwise, it will bring unnecessary trouble to the gas management work.
6 Development prospects of IC card gas meters
The construction scale of the natural gas introduction and utilization project in Jining City is 410 million m3 of natural gas used annually, and the total investment is about 130 million yuan. The main construction content of the natural gas introduction and utilization project includes: the introduction project of the urban natural gas periphery, the renovation project of the existing gas pipeline in the urban area, and the renovation project of the indoor gas facilities of the residents. The company’s leaders decided to change the existing 70,000 mechanical watch users to IC card watch users at the time of the replacement, introduce advanced business concepts and management models, enhance the city’s comprehensive service functions, improve the quality of life of residents, and promote the reform and development of public utilities. It provides a larger market space for the development of IC card gas meters in Jining City.
The use of IC card gas meters can enable gas companies to rationally allocate resources, improve their core competitiveness, and create a first-class enterprise. After the arrival of natural gas, the development of urban gas in my country has gradually embarked on the same development path as urban gas in other countries in the world, and scientific and technological progress also has common ground and has a solid foundation. These will greatly promote the industrial development speed of gas equipment and make a qualitative leap in the development of urban gas in my country. As relevant national departments attach great importance to the smart three-meter charging technology and macro guidance, as well as gas companies transform their corporate operating mechanisms, improve their production efficiency and market responsiveness, improve social satisfaction, and achieve the needs of the sustainable development of gas companies, The IC card gas meter and its charging management system will have a good market prospect. We also hope to take this as a new starting point, adhere to independent innovation, grasp development trends, actively research and develop new technologies, develop new products, vigorously explore the application fields of IC card meters, adhere to the combination of production and use, and jointly create a new situation in the construction of urban gas business, and Contribute to the construction of a resource-saving and environment-friendly society.
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