高精度数字化称重传感器系统研究  

Research on high-precision digital weighing sensor

作　　者：刘卫东 

机构地区：[1]河南未来铝业集团有限公司,河南焦作454100

出　　处：《河南理工大学学报（自然科学版）》2012年第1期78-82,共5页Journal of Henan Polytechnic University（Natural Science）

摘　　要：通过分析电源供电方式对测量精度的影响,采用间歇式恒流源对称重传感器供电,设计了基于滤波器和仪用放大器的信号调理电路,采用串行20位的模数转换器,按肖维勒准则剔除奇异数据,对数字化称重传感器系统进行优化.试验结果表明:高精度数字化称重传感器系统具有称重精度高、温度漂移小、灵敏度高的特点,为模拟称重信号的高精度数字化提供了一种解决方案.The relations between power supply means and measurement accuracy of weighing sensors are discussed in detaily introducing intermittent constant current source.Signal processing circuit is designed,which is based on filter and instrument amplifier,using serial 20 bit analog-to-digital converter.In system software design,Chauvenet Rule to was introduced pull out of singular data and implement digital weighing sensor system optimization.Actual experiment showed that the weighing system obtained high precision,small temperature drift and high voltage sensitivity,offersed a good solution to transform analog signal weighing to high precision digital signal.

关 键 词：恒流源间歇供电 电压基准源 仪用放大器 肖维勒准则 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]