【正文】 五邑大學本科畢業(yè)設計 I 摘 要 電表表示著 人們 日常用電的多少，現(xiàn)在每家每戶安裝的基本上是帶有轉盤的那種電表，它只能顯示出用電總量 。若 想查看上個月的用電量，只能靠電費單計算得來。現(xiàn)在已經是信息時代了，這種做法很顯然跟不上社會潮流。 近幾年來，社會提倡低碳、綠色經濟和可持續(xù)發(fā)展，在這種思想的推動下，智能電表將會成為社會的潮流。智能電表是在傳統(tǒng)電表的基礎上增加了自動化和智能化的功能，從而進一步提高電網的效率、提高供電的可靠性、電能的質量并且完善用電戶的服務，從而更好適應電力市場?，F(xiàn)在智能電網是全球電力部門研究和討論的熱點話題，智 能電表是智能電網中的最重要的環(huán)節(jié)，它支撐著電網的信息化、自動化以及互動化等方面的實現(xiàn)。 微處理器是智能電表的最主要的核心器件。它可以儲存海量的檢測數(shù)據，同時對測量出的結果進行分析、判斷和處理。本次設計是運用單片機 STC89C52為微處理器、 CS5460A芯片進行電能測量和計算、 X5045芯片作為外部存儲、數(shù)碼管進行顯示進行設計的。 關鍵詞 智能電表；自動化； C51 單片機； CS5460A 五邑大學本科畢業(yè)設計 II Abstract Electricity meter means the number of people everyday electricity, and now every household is basically equipped with the kind of meter, which can only show the total amount of electricity. To see the power consumption last month, only by electricity single calculated. It is now the information age, and this approach is clearly not social trends. In recent years, the social promotion of lowcarbon, green economy and sustainable development, in the promotion of this idea, smart meter will bee the trend of the society. Smart meter is automatic and intelligent function is added on the basis of traditional meter, energy efficiency so as to further improve the power grid, improve power supply reliability, power quality and perfect service of the users, in order to better adapt to the power market. Now the smart grid is a hot topic in the global power sector research and discussion, the smart meter is the most important part of smart grid, which support the realization of grid informationization, automation and interaction of. The microprocessor is the most important core device of the smart meter.. It can store vast amounts of detection data and analyze, judge and process the results of the measurement.. This design is the use of singlechip microputer STC89C52 and CS5460A chip for power measurement and calculation, X5045 chip as the external storage, digital tube display design. Key words Smart meter Automation 51 MCU S5460A 五邑大學本科畢業(yè)設計 I 目 錄 摘 要 .......................................................................................................................................... I Abstract ..........................................................................................................................................II 第 1 章 緒論 ................................................................................................................................. 1 智能電表的概念 ............................................................................................................. 1 智能電表的發(fā)展背景 ..................................................................................................... 1 智能電表的結構 ............................................................................................................. 2 智能電表的主要特點 ..................................................................................................... 2 第 2 章 主要芯片的介紹 ............................................................................................................. 4 微控制器 STC89C51 單片機 ......................................................................................... 4 簡介 ..................................................................................................................... 4 主要特性 ............................................................................................................. 4 引腳功能 ............................................................................................................. 4 電能計量芯片 CS5460A................................................................................................. 6 簡介 ..................................................................................................................... 6 主要特征 ............................................................................................................. 7 引腳功能 ............................................................................................................. 7 外部寄存器 X5045.......................................................................................................... 8 簡介 ..................................................................................................................... 8 主要特性 ............................................................................................................. 8 引腳功能 ............................................................................................................. 9 時鐘芯片 DS1302 ........................................................................................................... 9 簡介 ..................................................................................................................... 9 主要特性 ............................................................................................................. 9 引腳功能 ........................................................................................................... 10 74HC138 譯碼器 ........................................................................................................... 10 簡介 ................................................................................................................... 10 主要特性 ........................................................................................................... 10 真值表 ............................................................................................................... 11 LED 數(shù)碼管 ................................................................................................................... 11 第 3 章 總體設計方案 ............................................................................................................... 12 設計功能要求 ............................................................................................................... 12