Research On Quartz Tube Dimensions Photoelectric Comprehensive Measuring System

Based on laser scanning measuring technology, a quartz tube dimensions photoelectric comprehensive measuring system, which is applied to measure the dimensions of quartz tube non-contacted automatically, is presented in this paper. The system is composed of a laser scanning comprehensive measuring instrument, rotate and linear movement servo-control systems, a main fine mechanic system, a main controller, a real time controlling and data processing system by computer. The instrument can measure the data of outer diameter and wall thickness of certain position of quartz tube. The project is used which measuring instrument moved along axis and the measured quartz tube rotated and fixed ort a position. According to data of outer diameter and wall thickness of different sections and positions, it can calculate the parameters of section area, ellipticity, wall thickness error, flexibility and so on.Based on theoretical research and total design, the designs of optical system, hardware circuit, software and precision analysis are discussed in this paper. By measuring the data of electric machinery rotating speed, the error that is affected by its instability will be corrected. And Matlab emulates the process of data processing in the computer. The real measured data indicates that the system can be up to measuring outer diameter and wall thickness precision that will be supper to 0.02mm.