【作者】 高翔；

【导师】 王雪梅；

【作者基本信息】 西南交通大学 ， 测试计量技术及仪器， 2012， 硕士

【摘要】 当前,电能已经成为重要的能源。在市场经济下,人们对于电能计量要求精确度高,电能表使用寿命长,对用电的管理要求实现智能化和自动化。全电子式电能表,取代传统的感应式电能表已势在必行。目前国内外电力功率分析仪多为传统感应式电能表,受其结构和原理上的制约,通常存在着测量范围小、稳定性差和精度低等缺点。其次,测量指标不够全面,不能够及时显示用电设备电压电流波形和谐波分析图。市场上现有的功率分析仪量程都很大,在测量小电流用电设备时会出现较大误差,很难进行毫瓦级的功率测试,而且价格很贵,因而不能适应社会发展的需要。基于此,本研究采用CS5463电力测量芯片和STM32单片机组建智能化电能分析仪,实现对有效电压、有效电流、功率和功率因数等参数的测量,并且能智能化分析电能。设计电力功率分析仪嵌入分档自藕变压器,使输出电压程控输出,从而方便使用。该分析仪功率损耗极低,测量功能齐全,测量精确度高。论文在介绍分析仪基本测量原理基础上,主要论述了分析仪的总体结构设计、硬件电路设计和软件程序设计。硬件电路设计包括测试仪电源部分设计,STM32单片机和CS5463芯片相关的硬件电路设计,键盘控制电路设计和显示器电路设计。软件程序设计论述了STM32单片机和CS5463芯片的相关程序设计,包括STM32单片机的时钟配置、管脚配置、USART串口配置、SPI串口配置、ADC转换功能配置,CS5463芯片初始化设计、寄存器配置、数值分析功能设计、波形显示功能设计以及谐波分析功能设计。最后对分析仪进行校准,详细介绍了CS5463的校准原理和校准过程。经过校准后,测试仪器的测量精度能达到0.5%以上,能满足实际应用的需要。更多还原

【Abstract】 At present electric power have become an important energy. In the market economy, people reqire high precision of electric energy measurement and long service life of electric energy meter. People reqire intellegent and automatic management of electric power. Full electronic meter will replace the traditional electronic meter. Now there are a majority of traditonal electrical energy meters in the world, the structure and theory restraint their performance. Their shortcomings include small measuring range, poor stability, low accuracy and function singleless. They can not display voltage and current waveform and harmonic analysis diagram. Electrical energy meters available on the market have great measurement range, when they measure small electric current, the accuracy can not be guaranteed. It is difficult to achieve mW measurement and they are very expensive. Therefore they cannot meet the needs of social development.The intelligent electric energy analyzer is composed of STM32and CS5463chip. It can measure voltage, current, power, power factor and other parameters. It can intelligently analyse power. This research designs an instrument with the coupling transformer, so it can program output voltage. Its power loss is extremely small. The parameters is accurate and comprehensive.This study discusses principle of measurement and the analyzer performance design, monolithic construction, hardware circuit design and software program. Hardware circuit design includes power supply design, STM32and CS5463chip hardware circuit design, the keyboard and display circuit design. Program of software discusses the STM32and CS5463chip program design, including the STM32clock configuration, pin configuration, the USART serial port configuration, SPI serial port configuration, ADC conversion function configuration, CS5463chip initialization, numerical analysis function design, waveform display design and harmonic analysis function design. At the end, paper introduces the analyzer calibration, describles the calibration theory and procedure of the CS5463. Finally, calibration experiments show the instrument can reach up to0.5%accuracy and meet the application needs.更多还原