The application of precise traverse measurement in the northern extended section of line No.2 in Guangzhou subway;

On basis of the designing and implementation of the surface precise traverse net in some cities,the author summarizes the features of the precise traverse,stresses on the points to which attention should be paid during operation and on the evaluation of the accuracy of the results and provides the development trend of precise traverse in the paper,which can provide reference for other colleagues.

The Applications of Machine Vision to Precision Measurement;

Application of quartz crystal biosensor in precision measurement;

On-line precision measurement of the diameter of thin thread using CCD diffraction imaging;

In the process of development of measure instrument used to measure stiffness and mini lag angle of minitype torsion pole, the problem in precise measurement of mini lag angle of minitype torsion pole was successfully solved(the measure precision reached 0 1″).

The key concerned content: model and calibration of the digital imaging device, high preecise image processing algorithm, optical coding and precise optical probe are discussed in details, and the implement idea is also presented, these can provide design reference for industry on-field close range photogrammetry 3D precise measurement system.

At last the outlook for the precise measurement is summarized in this paper.

A system of precise measuring minute displacement of the distant aim by optical digital measurement is proposed.

With simple measuring auxiliary tools, the center of hole axle is located with standard diameter steel ball so as to solve the problem of precise measuring the center distance of one body hole axle.

Trajectory Planning of Geometric Parameter Precision Measuring for Thin-wall Revolving Body;

Study on Precision Measuring Technology of Electrical Thickness for Complex Surface Radome;