作者：李文涛，郝玉洁
单位：内蒙古科技大学信息工程学院，内蒙古包头014010
中图分类号：TP216.1        
文献标识码：A      
文章编号：1006-883X(2017)06-0024-05
收稿日期：2016-12-13

摘要：采取STM32单片机和CD4052模块为主要器件构成智能称重系统，该系统由称重传感器、CD4052多路选择开关模块、放大电路、STM32单片机构成，研究并使用了二标准实时自校法，使三步测量过程中零点与灵敏度保持恒定不变。经测试，传统称重传感器的测量误差大约为1.22%，智能化后误差降为0.33%，测量精度得到大幅提高。
关键词：应变式传感器；STM32；称重；自调零；自校准

Design of an intelligent strain weighing system
LI Wen-tao, HAO Yu-jie
School of Information Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China
Abstract: With STM32 MCU and CD4052 module as  main components, an intelligent weighing system is designed, which consists of weighing sensor, multi-channel switch CD4052, amplifying circuit, STM32 microcontroller etc.. Two standard real-time self-calibration method is studied and used, which makes zero point and sensitivity to keep constant in three-step measuring process. The tests show that the measuring error of a traditional weighing sensor is about 1.22% and reduced to 0.33% after being intelligentized. So the measuring accuracy is improved greatly.
Keywords: strain sensor; STM32; weighing system; self-zero; self-calibration
 

备注：2017年 第23卷 第06期