[1]杨玲,陈轩泽,马青玉.基于ModBus协议的高精度光栅位移测量仪设计[J].南京师范大学学报(工程技术版),2012,12(01):070-75.
　Yang Ling,Chen Xuanze,Ma Qingyu.ModBus Protocol Based Design of High-Precision Grating Displacement Measurement Instrument[J].Journal of Nanjing Normal University(Engineering and Technology),2012,12(01):070-75.
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基于ModBus协议的高精度光栅位移测量仪设计
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南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
12卷
期数:
2012年01期
页码:
070-75
栏目:
出版日期:
2012-03-20

文章信息/Info

Title:
ModBus Protocol Based Design of High-Precision Grating Displacement Measurement Instrument
作者:
杨玲1; 陈轩泽2; 马青玉1
( 1． 南京师范大学物理科学与技术学院，江苏南京210046) ( 2． 南京师范大学强化培养学院，江苏南京210046)
Author(s):
Yang Ling1; Chen Xuanze2; Ma Qingyu1
1.School of Physics and Technology,Nanjing Normal University,Nanjing 210046,China
关键词:
莫尔光栅尺; 单片机; ModBus 协议; 位移测量
Keywords:
moire grating ruler; singlechip; ModBus protocol; displacement measurement
分类号:
TH822
摘要:
采用STC89C51单片机设计了基于ModBus协议的高精度光栅位移测量仪.根据光栅位移传感器的原理,设计光栅信号细分电路对光栅尺的输出信号精度进行提升,并用单片机的外部中断进行运动方向判别和位移测量,通过液晶显示结果;为了和AI系列仪表兼容,基于ModBus协议进行了485数据通讯设计.用LE型光栅尺在泡生法蓝宝石生长系统的应用结果表明其测量精度提高了4倍,具有较强的抗干扰能力,可实现多仪表的工业应用,具有传输距离远、传输速率快、稳定可靠的优点.
Abstract:
A ModBus protocol based high precision grating displacement measurement instrument was designed by using STC89C51 microcontroller in this paper． According to the principles of grating displacement transducer，a fractionized circuit for the grating signals was designed to achieve grating pulse interruption and motion direction identification for the singlechip with improved measurement precision，and then the measured results are presented with a LCD display． To enhance the compatibility with the AI series measurement meters，a 485 interface was also designed for data communication with computer based on the ModBus protocol． The experimental displacement measurement for kyropoulos sapphire growth using a LE Moire grating ruler proved that the precision was enhanced for 4 times with good ability of anti-interference and suggested the industrial application with long transmission distance，high data transfer rate and good reliability．

参考文献/References:

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备注/Memo

备注/Memo:
基金项目: 国家自然科学基金( 10974098 ) 、江苏省科技厅自然科学基金( BK2009407 ) 、教育部高等学校博士学科点专项科研基金 ( 20093207120003) ．通讯联系人: 马青玉，博士，教授，研究方向: 声学、电子技术和生物医学物理． E-mail: maqingyu@ njnu． edu． cn
更新日期/Last Update: 2013-03-11