|本期目录/Table of Contents|

[1]张永超,赵录怀,杨钧翔.基于差动式电容传感器的弹簧检长系统[J].工业仪表与自动化装置,2020,(04):74-76.[doi:1000-0682(2020)04-0000-00]
　ZHANG Yongchao,ZHAO Luhuai,YANG Junxiang.Spring length detection system based on differential capacitance sensor[J].Industrial Instrumentation & Automation,2020,(04):74-76.[doi:1000-0682(2020)04-0000-00]
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基于差动式电容传感器的弹簧检长系统

《工业仪表与自动化装置》[ISSN:1000-0682/CN:61-1121/TH]

卷:
期数:
2020年04期
页码:
74-76
栏目:
出版日期:
2020-08-15

文章信息/Info

Title:
Spring length detection system based on differential capacitance sensor
作者:
张永超1; 赵录怀2; 杨钧翔1
1.西安交通大学城市学院，西安 710018；
2.西安交通大学 电气学院，西安 710048
Author(s):
ZHANG Yongchao1; ZHAO Luhuai1; YANG Junxiang1
1.Xi’an Jiaotong University City College, Xi’an 710018,China；
2.Xi’an Jiaotong University, Xi’an 710048,China
关键词:
关键词：弹簧检长; 差动电容传感器; 双T形交流电桥
Keywords:
spring length check;  differential capacitance sensor;  double T-shaped AC bridge
分类号:
TM932
DOI:
1000-0682(2020)04-0000-00
文献标志码:
A
摘要:
针对弹簧检长系统测量误差大的问题，该文设计了基于差动式电容传感器的弹簧检长系统，该系统由差动式变面积电容传式感器、双T形交流电桥测量电路、信号调理电路、FPGA和显示组成，经试验得到电压与弹簧相对长度函数关系，在实际使用中运用该函数关系通过测量电压计算出待测弹簧长度。经实验测得电压与弹簧相对长度拟合函数其线性度为1%，灵敏度为2.529 2 mV/mm，分辨力为0.05 mm，按照国家标准1级弹簧长度误差小于标准弹簧±0.2 mm为合格，实验表明，该系统完全可以满足弹簧检长要求，且线性度好、灵敏度高、分辨
Abstract:
Aiming at the problem of large measurement error of spring length detection system, this paper designs a spring length detection system based on differential capacitance sensor.The system consists of differential variable area capacitance sensor,double T-shaped AC bridge measure- ment circuit and signal conditioning circuit,FPGA and display composition,the voltage and the relative length function of the spring are obtained through experiments.In the actual use,the function relationship is used to calculate the length of the spring to be tested by measuring the voltage. The linearity of the voltage and spring relative length fitting function is 1%,the sensitivity is 2.529 2 mV/mm, and the resolution is 0.05 mm.According to the national standard, the spring length error is less than the standard spring ±0.2 mm.The system can fully meet the requirements of spring inspection,and has good linearity,high sensitivity,strong resolution and good stability.Compared with the standard instrument,the accuracy rate is 100%,and the operation is simpler and the cost is lower than the existing equipment.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期：2019-08-21
作者简介：张永超(1977)，男，硕士，副教授，主要研究方向为自动控制方面。
更新日期/Last Update: 1900-01-01