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With the continuous improvement of the measurement accuracy, measurement speed , non-contact measurement method due to its good accuracy and no damage in many areas has been gradually replace traditional contact measurement method . Linear array of CCD (Charge Coupled Device , Charge Coupled Device ) as a single charge of a semiconductor device of the carrier signal , under the premise of the means of a suitable driving circuit and an optical system , it can achieve high measurement accuracy , which is widely used in surveillance , detection , measurement , and other fields . In this paper, direct- laser triangulation principle , using the CPLD ( Complex Programmable Logic Device , complex programmable logic device ) driver line array CCD sensor as a measurement semiconductor laser tube as the sensor has a light source and using SCM as the control core design a kinds of high-precision , wide range of non -contact distance measurement system . The thesis research laser triangulation technology research status , and then introduce the principle of laser triangulation distance , and linear array CCD device and its basic working principle , the main performance indicators were analyzed . Secondly , detailing the system hardware and software design , CCD sensor of the laser signal converted into an electric signal, and by a simple enlarged , the filtering circuit processing , and then sent to the microcontroller for the A / D converter , then the data information via RS -232C serial communication sent to the host computer for further processing. Finally, a description of the commissioning of the system , the experiment , analysis of the experimental results and the experimental error , and direction of further research and improved . This article describes the laser triangulation system uses a CPLD to design the linear CCD drive timing the CCD optical integration time is adjustable , which not only improve the reliability and flexibility of the circuit , and also reduced the volume of the system hardware device ; using SCM as the control core is also very simple, and cost savings , the accuracy of the measurement system can theoretically reach 0.1mm range can reach up to 20cm , good prospects for the use of this study in the common non-contact measurement applications .
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