一种低转换速率下的电子天平滤波处理方案  

A Filtering Algorithm for Electronic Balance in Low Conversion Rate

作　　者：林志雄[1] 黄剑航[1] 

机构地区：[1]莆田学院电子信息工程系,莆田351100

出　　处：《计算机与数字工程》2009年第11期40-42,57,共4页Computer & Digital Engineering

摘　　要：针对基于低转换速率Σ-Δ型模数转换芯片的电子天平,为快速精确地进行称重测量的需要,提出一种适合于单片机的低运算量、变长缓冲区及积分阀值判断滤波算法,该算法收敛速度快,能提高测量精度并有抗环境抖动能力。实验表明,该算法能达到设计要求。For the electronic balance based on low-conversion rate ∑-△ ADC chips, the paper presents a low-computation filtering algorithm suitable for single-chip microcomputer to achieve the purpose of fast and accurate measurement by variable-length buffer and integral threshold comparison. The fast-convergence algorithm can improve the measurement accuracy and has the ability of anti-environmental jitter. The experiment data result shows that the algorithm could meet the expectation.

关 键 词：低转换速率 低运算量 变长缓冲区 积分阀值比较 滤波算法 

分 类 号：TH715.1[机械工程—测试计量技术及仪器]