The Research On Inspecting System Of Embedded Laser Displacement

At Present, inspection technology is moving to high precision, high efficiency and miniaturization, intellectualization. The non-contact distance finding is one of the important reseacrhing tasks of testing and inspection technology. In this text an inspecting technique for having realistic meaning adopt the laser photo-triangulation combine together photoelectricity transducer technique to study the distance, it combines together with electronics, calculator technique and can constitute an automatic examination system to have the actual applied worth. The inspecting principle and methods are described in this article.Based on the survey of the non-contact inspecting method, the research on a inspecting system of embedded laser displacement, it's development trend, present dissertation developed a distance inspecting system on the base of the comprehensive knowledge of optical triangle method and PSD (Position Sensitive Detector) 's operating principle; the inspecting principle and the singal processing electrocircuit of the PSD's output signal are throughly studied; at last the reasons for causing error about the persent system are analysed with experiment in details.This text described the apparatus constituent part:according to the laser inspected head of photo-triangulation principle, the single chip computer control system and data processing and imitatethe with computer, and analyse it's form and position error measurement.The accuracy of inspecting system is verified by experiments. The results of experiments show that text make use of the photo-triangulation technique, and realize to the inspect of the space position, its erroneous can attain 0.005mm.