基于STM32和卡尔曼滤波的纸张计数系统设计  

Design of Paper Counting System Based on STM32 and Kalman Filter

作　　者：王鑫[1] 张子轩 张雨鑫 张昊博 王杰[1] 李鹏海[1] 宋立红 WANG Xin;ZHANG Zi-xuan;ZHANG Yu-xin;ZHANG Hao-bo;WANG Jie;LI Peng-hai;SONG Li-hong(Tianjin University of Technology,Tianjin 300384,China;Tianjin Qicheng Science&Technology Co.,Ltd.,Tianjin 300190,China)

机构地区：[1]天津理工大学,天津300384 [2]天津启诚伟业科技有限公司,天津300190

出　　处：《仪表技术与传感器》2021年第4期93-96,101,共5页Instrument Technique and Sensor

基　　金：天津市自然科学基金资助项目(18JCYBJC95400):2019年天津市教育科学规划院教学成果奖重点培育项目(PYGJ-015);2020年天津理工大学校级重点教学基金项目(ZD20-15)。

摘　　要：设计了基于电容式传感器FDC2214的纸张计数自动测量系统,经过有限次自校准学习,计数正确率可以达到95%。首先通过FDC2214将纸张两侧极板的电容值传送到STM32F103ZET6单片机中,编程构造离散型卡尔曼滤波器对电容数据进行滤波。然后将滤波后的电容值采用算术平均法获取稳定的纸张数量信息并发送到显示装置,从而实现对不同数量纸张的准确测量。最后,为适应测量不同材质纸张的数据,设计多组可分别进行自校准和测量的模式,并将数据保存到FLASH中,以实现数据的断电保存。经过大量样本实验测量,证明系统具有较好的计数效果。An automatic measuring system of paper counting based on capacitive sensor FDC2214 was designed.After limited self-calibration learning,the counting accuracy can reach 95%.Firstly,the capacitance values of the plates on both sides of the paper were transmitted to STM32F103ZET6 MCU through FDC2214,and the discrete Kalman filter was programmed to filter the date of capacitance.Then the filtered capacitance value was used to obtain the stable paper quantity information by arithmetic mean method and was sent to the display device so as to realize the accurate measurement of different quantity of paper.Finally,in order to adapt to the measurement of different materials of paper data,multiple sets of self-calibration and measurement modes were designed,and the data were stored in FLASH to realize the data blackout storage.It is proved that the system has a good counting effect by a large number of sample experimental measurements.

关 键 词：纸张计数 电容传感器 FDC2214 STM32 卡尔曼滤波 自校准 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]