Study of large diameter measurement system with laser collimation;

In order to realize synthetic coaxiality measurement for position deviations and angle deviations simultaneously,a laser beam-spot receiver system consisting of a receiver lens,beam splitter prisms,and CCD based on laser collimation was established.

Based on the principle and technology of laser collimation and optoelectronic inspection, an optoelectronic measuring method is presented to measure the straightness of the bore with a diameter of 25 mm by using the quadrant detection method, technique of laser collimation, optoelectronic detection, precision machine, servocontrol and computer for reference.

Design of laser alignment measuring system for guide rails assembling in situ;

Analyzing characteristic of the four-quadrant detector applied to laser alignment;

Application of wireless USB data transmission system in laser alignment-instrument measurement;

A new method based on the traditional method is presented,applying the collimated laser to simulate the axes of the multi-barrel launcher.

The principle of portable laser collimator is introduced in this paper and its laser device,PSD signal processing circuits data acquisition are analysed in detail.

A new automatic measuring system of alignment error portable laser collimator is introduced.

Based on the theory of perspective projection transformation,a new modeling method for laser auto-collimation angle measurement system is proposed.

For coordinate transfer of control points of oblique super high-rise buildings with high accuracy and precision,methods combining the electronic tachometer with laser aligner were adopted.