电测与仪表
電測與儀錶
전측여의표
ELECTRICAL MEASUREMENT & INSTRUMENTATION
2015年
10期
92-96
,共5页
三相电能表%TDK71 M6513 H%温度补偿%时钟
三相電能錶%TDK71 M6513 H%溫度補償%時鐘
삼상전능표%TDK71 M6513 H%온도보상%시종
three-phase electric energy meter%TDK71M6513H%temperature compensation%RTC
针对电能表在不同的温度范围使用时，温差使各元器件产生了温度漂移造成的系统累积误差的问题，介绍了基于 TDK71M6513H 设计的三相电能表的两种温度补偿方法，以提高计量精度。一种是针对TDK71 M6513 H芯片本身的温度补偿，通过增益控制进行温度补偿使系统达到恒定；另一种是针对时钟的温度补偿，采用软件程序根据相应的修正值对时钟自动补偿，用以克服温度造成的晶振的频率漂移。
針對電能錶在不同的溫度範圍使用時，溫差使各元器件產生瞭溫度漂移造成的繫統纍積誤差的問題，介紹瞭基于 TDK71M6513H 設計的三相電能錶的兩種溫度補償方法，以提高計量精度。一種是針對TDK71 M6513 H芯片本身的溫度補償，通過增益控製進行溫度補償使繫統達到恆定；另一種是針對時鐘的溫度補償，採用軟件程序根據相應的脩正值對時鐘自動補償，用以剋服溫度造成的晶振的頻率漂移。
침대전능표재불동적온도범위사용시，온차사각원기건산생료온도표이조성적계통루적오차적문제，개소료기우 TDK71M6513H 설계적삼상전능표적량충온도보상방법，이제고계량정도。일충시침대TDK71 M6513 H심편본신적온도보상，통과증익공제진행온도보상사계통체도항정；령일충시침대시종적온도보상，채용연건정서근거상응적수정치대시종자동보상，용이극복온도조성적정진적빈솔표이。
Regarding the problem of system accumulative error caused by temperature drift of component of electric energy meter due to temperature difference when the meters are used in various temperature ranges,this article intro-duced two types of temperature compensation methods for three-phase meter designed based on TDK71M6513H chip to improve the measurement accuracy.One of the methods is temperature compensation to the TDK7 1M6513H chip it-self,which allows the system keeps a constant temperature through gain control,and the other method is temperature compensation to RTC,in which software program is applied to make automatic compensation to clock according to the corresponding corrected value so as to offset the frequency drift of crystal oscillator caused by temperature drift.
