1、Compared with the traditional meter, Single-phase electronic prepayment meter can achieve data achieve data acquisition, transmission and processing automation, which overcomes inefficiency and uncertainty of the traditional manual meter reading pattern. Power management can promote modernization. T
2、he Single-phase electronic prepayment meter is based on AT89C52. The design of hardware circuit partial completion of the measurement circuit, crystal reduction and display circuits, IC card interface, energy memory, power-fail detection circuit design； procedures for achieving some of the initializ
3、ation subroutine, the subroutine measurement, interruption subroutine, the subroutine shown such subroutine design. SM9903 system used as a measurement of chips, and memory IC card AT24C01 as electricity and regulatory departments and users connecting to the bridge, to be sold by the store managemen
4、t system into the card number, the value of electricity. Single-phase electronic Prepayment Meter is not only used for metering, prepaid expenses, it also has a simple interface, compact structure, Measurement accuracy, and high precision characteristics. Moreover, due to the design of linear Regula
5、tors Applied Power, greatly reducing the power supply form interference, improve the reliability of the power meter. Power meter as a measurement tool, in the national economy has been widely used in various sectors.Initially, the use of all mechanical sensor meter.It has a power consumption and mor
6、e cumbersome, require manual meter reading, not anti-awakened power, performance and low defects.With the rapid development of microelectronics, micro-controller (MCU) and large-scale integrated circuits in the field of energy metering a wide range of applications, so that the skill level and perfor
7、mance meter has made rapid progress.Subsequently appeared in a variety of meter, such as: single-phase electronic prepaid watt-hour meter, single phase electronic meter re-charge, single-phase electronic multi-function meter, Electronic Power Meterthree-phase electronic multi-function meter and so o
8、n.Depending on the application of their environment, and users need different functions, respectively, in the national economy plays an important role. Currently, the single-phase electronic prepaid watt-hour meter is in perfect maturity, with the introduction and adoption of advanced foreign techno
9、logy and processes, and with the rapid technological development, single-phase electronic prepaid watt-hour meter will be more maturetechnology and advanced technology and high reliability features presented to the user Energy metering is a modern electric power marketing system is an important aspe
10、ct of metering systems, data collection can be achieved from energy transmitted to the automation of handling it to overcome the traditional low efficiency of manual meter reading patterns and uncertainty, to promote the modernization of the electric energy management. Modern institutions of higher
11、education student apartments, generally open to students implement electricity supply, electricity charges.Therefore, the new deal every room student apartments are equipped with power meters or other forms of energy measurement devices to buy a lot of students to realize how much electricity.The pr
12、oject design phase electronic prepaid watt-hour meter that can satisfy the needs of the community. We can learn from multiple sources, compared with the previous two years, the meter performance and service life of electronic components the steady improvement of the quality of products pre-paid mete
13、r, function, service life and reliability are significant improvement. The current regional power system control department of the integrated mechanical and electrical / electronic pre-paid meter wide views of the increasingly relaxed, especially for fully electronic single, three-phase series of pr
14、e-paid meter is showing the trend of escalating demand. At the same time as the regional power management to increase the implementation of the Ministry of price policy, the new multi-rate prepayment meter use has begun. A power meter product line with the specific use of system management and the p
15、ractical needs of users, the ultimate test was the time the meter is the users identity. I think that whether it is mechanical with a long life for the machine table of the electromechanical meter-one pre-paid meter, or a full electronic pre-paid electricity meter prepaid measuring instruments Colle
16、cting management in future electricity Measurement and Management will continue to play an important role! Single-phase electronic prepaid watt-hour meter, mainly for the implementation of the first to buy electricity for the electricity system of the occasion, the frequency measuring active energy
17、in AC circuits. The series of products using A / D conversion principle of mass-specific integrated circuit chip energy metering, high-performance microprocessors, power futures, current limit protection. Thus ensuring its technical nature, the use of security, its measurement accuracy. The product
18、is charging electricity reform, and improving the level of scientific management for the electricity, to promote the rational use of electricity, saving electricity ideal for energy measurement products. Price mechanism is the center of power industry reform. Price and cost will become the new opera
19、ting environment Power Enterprise Strategy and Management Innovation central issue. Control changes and triggered a large-scale power generation enterprises mergers and acquisitions, national network and electric power, technological innovation, new energy, electricity and other factors will continu
20、e to promote the industrial structure and changing market structure and competition pattern of changing to the power structure of the energy industry , market structure, price, strategy, investment strategy and the power companies have a profound impact on competitive position. Under the new rules t
21、o redesign and adjust business strategy, organizational structure, control, management, business model, business model, core business processes and innovative mechanisms is a priority. How to build core competencies, how to technological innovation into business strategy, how to control risk and pri
22、ce are the decision-making power companies need to think about. Electricity reform is a long-term, continuous process of innovation, corporate strategic decision-makers will power a sustained challenge. Therefore, we must use innovative management methods and thinking to develop strategies and polic
23、ies. 单相电子式预付费电度表和传统的电度表相比，能实现从电能数据采集、传输到处理的自动化，它克服传统人工抄表模式的低效率和不确定性，能推进电能管理的现代化。单相电子式预付费电度表的设计是以 AT89C52 单片机为核心来实现的。该课题设计在硬件电路部分完成了计量、复位及晶振、显示、 IC 卡接口、电能存储器、掉电检测等电路的设计。程序部分实现了初始化子程序、计量子程序、中断子程序、显示子程序等子程序的设计。系统中使用 SM9903 作为计量芯片，并通过存储 IC 卡 AT24C01 作为电管部门与用户连接的桥梁，来存储由售电管理系统 写入的卡号、电量值等。 单相电子式预付费电度表不仅具有电能计量、预付费等功能，并且具有接口简单、结构紧凑、计量准确、精度高等特点。同时由于设计中应用了线性稳压电源，大大减少了来自于电源的干扰，提高了电度表工作的可靠性。 电度表作为电能计量工具，在国民经济各部门中得到广泛应用。最初，使用的都是机械式感应电度表。它具有耗电多、笨重、需要手工抄表、不防窍电、性能低等缺点。随着微电子技术的迅猛发展，微控制器（单片机）和大规模集成电路在电能计量领域的广泛应用，使电度表的技术水平和性能得到长足发展。既而
