The Optical Triangulation—Electromagnetic Whirlpool Compounding Sensor;

The paper summarizeds the couse of the early development of trigonometry,the Egyptians and Babylonian with a crude knowledge of practical trigonometry began the times of proto-trigonometry.

The background of the Urquhart theorem and the interpretations viewed from plane geometry and trigonometry angles are introduced,and its meaning in analytic geometry is explored.

Firstly, the measuring principle of the optical triangulation is.

Based on the survey of the non-contact measuring method, the present research status of Position Sensitive Detector (PSD) and it s development trend, present dissertation developed a distance measuring system on the base of the comprehensive knowledge of optical triangle method and PSD s operating prin.

The principlesof optical triangle method and position sensitive device were explained, on the basis of which novel real timemeasuring system was developed giving optical path design and following processing ci.