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| 摘要: |
| 介绍了一种网络化的多功能电能表。其硬件主要包括80C196KC处理器、PSD913F2闪存和RTL8019AS网络接口控制芯片等。利用80C196KC芯片高速输入端检测周期，差分预测下一周期实现工频跟踪，利用其内部的A／D转换器将交流采样信号转换成数字量，根据周期连续交变信号的交流采样理论计算求得各电量参数；并结合以太网控制芯片扩展了网络通信功能，从而实现一种网络化的智能仪表，结构紧凑合理，性价比高。 |
| 关键词: 网络化 多功能电能表 数据采集 数据处理 网络接口控制芯片 |
| DOI： |
| 分类号:TM933.4 |
| 基金项目:山东省科技开发计划项目(企业控制网络与数据网络一体化技术应用研究,003090403) |
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| Network multi-functional electric energy meter |
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LI Ming JIA Zhi ping
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| Abstract: |
| A kind of network multi functional electric energy meter is introduced,which is composed of 80C196KC microprocessor,PSD913F2 flash memory and RTL8019AS net interface controller.The power frequency tracking is realized based on the measurement of current power frequency via the super speed input port and the forecast of the next period via differential calculation.AC sampling signals are converted into digital values by the internal A/D converter,and the parameters are worked out according to AC sampling theory of periodic continuous alternating signal.With the net interface controller,the network communication function is added to implement the network multi functional electric energy meter.It is an intelligent network instrument with compact and rational architecture,excellent performance and cost ratio. Scientific & technical development project of Shandong province(Study on the integration technology application of enterprise control net and data net(003090403)) |
| Key words: electric energy meter,data acquisition,data processing,net interface controller, |
