基于单片机控制的多量程位移数显仪设计  

Design of Multi-range Displacement Digital Display based on MCU Control

作　　者：周玲[1] 张记龙[2] 刘笑达[3] 

机构地区：[1]运城学院,山西运城044000 [2]中北大学,山西太原030051 [3]太原理工大学,山西太原030024

出　　处：《火力与指挥控制》2008年第6期134-136,共3页Fire Control & Command Control

基　　金：学院院级立项项目(20060226)

摘　　要：在机械产品微小位移高精度检测显示中,采用螺管式电感位移传感器测量,根据所选择的位移传感器量程的不同,研制基于单片机控制的多量程位移数字显示仪。采用4位半A/D转换器ICL 7135将输入直流信号转换成数字信号,由单片机软件来标度转换成对应的位移量,送LED显示。通过改变小数点的显示位置来达到提高显示精度的目的,实验结果表明,在量程为±0.25mm,±0.4mm,±1mm,±2mm时,分辨率为0.1μm;在量程为±5mm时,分辨率为1μm。In the high-precision measurement and display for microdisplacement of machinery production,spiral tube inductors displacement sensor is adopted, multi-range displacement digital display based on MCU control is designed according to different range of displacement sensor. The input DC signal is conversed to digital signal by 4-1/2 ADC ICL7135, and then the digital signal is transformed into corresponding displacement by MCU software, finally LED display. Decimal point position of the LED display：is changed to improve the display accuracy. The expriment results show that,in the range of ± 0. 25mm. ±0.4mm,±1mm,2mm,the precision is 0. μm,the precision is μm,in the range of ±5mm.

关 键 词：数字显示仪 多量程转换 单片机 

分 类 号：TN873.5[电子电信—信息与通信工程]