基于MSP430准同步采样算法的数字电压表设计
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摘要
在采样数字测量装置中普遍采用同步采样及其数据处理方法测量周期信号的电参数,然而实现绝对的同步采样是很困难的,因为采样中任何一个微小的不同步误差都带来较大的测量误差。因此,减小不同步误差已经成为基于同步采样原理的测量装置获得高精度的一个关键因素。本文介绍了一种新的采样处理简单算法,即准同步采样算法。该算法最突出的特点是不要求采样周期与信号周期严格同步。由于不受非同步误差影响,简化了传统FFT算法,节省硬件资源。最后,将准同步采样算法应用于基于MSP430单片机的数字电压表的软件核心设计,进行算法最终实现,经测试结果证实了准同步采样算法的实用性。
In sampling digital measuring device of the synchronous sampling and data processing methods widely used in measuring the electrical parameters of periodic signal,but it is difficult to achieve absolute synchronous sampling,because samples in any tiny sync error bring bigger error of measurement.Therefore,reducing the non-synchronization error has become a key factor for the accuracy of the measurement device based on the principle of synchronous sampling.This paper introduces a new sampling processing simple algorithm, namely quasi-synchronous sampling algorithm.The most prominent feature of this algorithm is that the sampling period and signal cycle are not strictly synchronized.The traditional FFT algorithm is simplified and the hardware resources are saved due to the non-synchronous error.Finally,quasi synchronous sampling algorithm was applied to digital voltage meter based on msp430 single chip microcomputer software core design,algorithm finally,the practical test results confirmed that the quasi synchronous sampling algorithm.
In sampling digital measuring device of the synchronous sampling and data processing methods widely used in measuring the electrical parameters of periodic signal,but it is difficult to achieve absolute synchronous sampling,because samples in any tiny sync error bring bigger error of measurement.Therefore,reducing the non-synchronization error has become a key factor for the accuracy of the measurement device based on the principle of synchronous sampling.This paper introduces a new sampling processing simple algorithm, namely quasi-synchronous sampling algorithm.The most prominent feature of this algorithm is that the sampling period and signal cycle are not strictly synchronized.The traditional FFT algorithm is simplified and the hardware resources are saved due to the non-synchronous error.Finally,quasi synchronous sampling algorithm was applied to digital voltage meter based on msp430 single chip microcomputer software core design,algorithm finally,the practical test results confirmed that the quasi synchronous sampling algorithm.
引文
[1]潘洋,基于采样逼近的准同步改进算法研究[J].仪器仪表学报,2016,37(3):512-516.
[2]王彭,周峰,黄震宇.基于时域准同步的谐波和间谐波检测算法[J].仪器仪表学报,2013,34(2):275-280.
[3]梁艳,王昆凡,阚加荣.一种基于DSP的电力系统同步采样方法的研究[J].盐城工学院学报,2014,27(3):30-35.
[4]孟卓,温和.基于复化梯形的准同步采样频率测量算法[J].中国电机工程学报,2015,35(10):2445-2453.
[5]张永瑞,电子测量技术基础[M].西安:西安电子科技大学出版社,2013.
[6]傅中君,周根元,陈鉴富.基于准同步DFT的非整数谐波分析算法[J].仪器仪表学报,2012,33(1):235-240.
[7]王继东,杜旭浩,杨帆.基于三次样条插值信号重构的微网谐波及间谐波分析算法[J].电网技术,2012,36(11):7-11.
[8]陈卫兵,束慧.基于STM32F103VE6和ADE7878的电能参数检测装置的设计[J].南通职业大学学报,2012,26(3):89-92.
[9]邹培源,黄纯,江辉,等.基于全相位谱细化与校正的谐波和间谐波测量方法[J].电网技术,2016,40(8):2496-2502.
[10]肖勇,罗睿希,赵伟.基于IEC61850的数字化电能表用快速准同步谐波测量算法[J].电网技术,2018,42(2):621-627.
[11]杨维祎,郭颖,王雪峰,等.基于TI杯电子竞赛的金属探测系统设计[J].国外电子测量技术,2015,34(2):54-57.
[12]李鹏. MSP430低功耗运行模式原理及应用[J].科技创新与应用,2016(6):51-54.
[13]杨博,冒晓莉,葛益娴.基于MSP430的远程无线体温测量系统[J].电子设计工程,2013,21(16):69-71.
[14]李芮阁,栾婧,严斌,等.基于MSP430的无线充电系统设计[J].电子设计工程,2015,23(15):69-71.
[15]Sun X,Sun L. Harmonic frequency estimation based on modified-MUSIC algorithm in power system[J]. Open Electrical&Electronic Engineering Journal,2015,9(1):38-42.
[16]Lpquh R,Volij B. Accurte measurement of AC voltage in audio band using Agilent 3458A sampling capability[C]//Conference on Precision Electro-magnetic Measurement,2014:740-741.
[17]Alves D K,Costa F B,Araujo R R L,et al.Realtime power measurement using the maximal overlap discrete wavelet-packet transform[J]. IEEE Transactions on Industrial Electronics,2017,64(4):3177-3187.
[18]张双双,王延年.节点分布不均匀的无线传感网络低功耗算法[J].西安工程大学学报,2015(6):720-723.
[19]张垚,崔劼,刘强.天气雷达信号处理中的高性能时钟设计与实现[J].电子科技,2017(12):4-8.
[20]赵威,孙绍辉,曹勇.基于超低功耗无线通信技术的电子墨水标签显示系统研究[J].电力信息与通信技术,2018(4):54-58.
[2]王彭,周峰,黄震宇.基于时域准同步的谐波和间谐波检测算法[J].仪器仪表学报,2013,34(2):275-280.
[3]梁艳,王昆凡,阚加荣.一种基于DSP的电力系统同步采样方法的研究[J].盐城工学院学报,2014,27(3):30-35.
[4]孟卓,温和.基于复化梯形的准同步采样频率测量算法[J].中国电机工程学报,2015,35(10):2445-2453.
[5]张永瑞,电子测量技术基础[M].西安:西安电子科技大学出版社,2013.
[6]傅中君,周根元,陈鉴富.基于准同步DFT的非整数谐波分析算法[J].仪器仪表学报,2012,33(1):235-240.
[7]王继东,杜旭浩,杨帆.基于三次样条插值信号重构的微网谐波及间谐波分析算法[J].电网技术,2012,36(11):7-11.
[8]陈卫兵,束慧.基于STM32F103VE6和ADE7878的电能参数检测装置的设计[J].南通职业大学学报,2012,26(3):89-92.
[9]邹培源,黄纯,江辉,等.基于全相位谱细化与校正的谐波和间谐波测量方法[J].电网技术,2016,40(8):2496-2502.
[10]肖勇,罗睿希,赵伟.基于IEC61850的数字化电能表用快速准同步谐波测量算法[J].电网技术,2018,42(2):621-627.
[11]杨维祎,郭颖,王雪峰,等.基于TI杯电子竞赛的金属探测系统设计[J].国外电子测量技术,2015,34(2):54-57.
[12]李鹏. MSP430低功耗运行模式原理及应用[J].科技创新与应用,2016(6):51-54.
[13]杨博,冒晓莉,葛益娴.基于MSP430的远程无线体温测量系统[J].电子设计工程,2013,21(16):69-71.
[14]李芮阁,栾婧,严斌,等.基于MSP430的无线充电系统设计[J].电子设计工程,2015,23(15):69-71.
[15]Sun X,Sun L. Harmonic frequency estimation based on modified-MUSIC algorithm in power system[J]. Open Electrical&Electronic Engineering Journal,2015,9(1):38-42.
[16]Lpquh R,Volij B. Accurte measurement of AC voltage in audio band using Agilent 3458A sampling capability[C]//Conference on Precision Electro-magnetic Measurement,2014:740-741.
[17]Alves D K,Costa F B,Araujo R R L,et al.Realtime power measurement using the maximal overlap discrete wavelet-packet transform[J]. IEEE Transactions on Industrial Electronics,2017,64(4):3177-3187.
[18]张双双,王延年.节点分布不均匀的无线传感网络低功耗算法[J].西安工程大学学报,2015(6):720-723.
[19]张垚,崔劼,刘强.天气雷达信号处理中的高性能时钟设计与实现[J].电子科技,2017(12):4-8.
[20]赵威,孙绍辉,曹勇.基于超低功耗无线通信技术的电子墨水标签显示系统研究[J].电力信息与通信技术,2018(4):54-58.