摘要
通过对以石英晶体传感器为称重单元的动态称重系统称重信号中干扰信号的分析,得出其称重信号中存在大量干扰信号,包括高频噪声和低频噪声,此外车辆行驶时自身振动、轴型、行驶速度以及加速度都会影响动态称重精度。针对以上问题,提出先利用小波变换算法对称重数据进行滤波预处理,然后再经过EEMD算法以及信号重构算法进一步处理。将以上信号处理算法通过仿真以及运用于现场,能够使称重数据误差控制在2%以内,达到了良好的称重效果。
Through the analysis of interference signal in quartz crystal sensor weighing system for weighing unit weighing signal,interference signal that a large number of the weighing signal,including high frequency noise and low frequency noise,in addition when the vehicle vibration,its axis type,speed and acceleration will affect the dynamic weighing accuracy.In view of the above problems,the paper puts forward that the wavelet transform algorithm is used to preprocess the weighing data,and then the EEMD algorithm and the signal reconstruction algorithm are used to deal with the problem.The above signal processing algorithm is simulated and applied to the field,so that the error control of the weighing data is less than 2%,and the result is good.
出处
《传感技术学报》
CAS
CSCD
北大核心
2017年第2期236-241,共6页
Chinese Journal of Sensors and Actuators
关键词
动态称重
信号处理
小波变换算法
EEMD算法
信号重构算法
dynamic weighing
signal processing
wavelet transform algorithm
EEMD algorithm
signal reconstruction algorithm
作者简介
王中立(1989-),男,硕士,主要研究方向为检测技术与智能仪表.wangli19890@sina.com
李丽宏(1963-),男,副教授,博士,主要研究领域为检测技术与智能仪表,ya721@163.com.