Accuracy Characteristic Test And Analysis Of Line Structured Light Sensor

Line structured light sensor is an emerging optical measurement sensor.It has the advantages of high measurement efficiency and continuous measurement.It is widely used in the field of industrial detection.The measurement accuracy of line structured light sensor is affected by many factors,but the current line structured light sensor lacks corresponding test standards and evaluation procedures,which affects the application of this kind of sensor.Therefore,in order to understand the influence of various factors on the measurement accuracy of the sensor,it is of great significance to test and analyze the measurement accuracy of the sensor.This thesis takes the line structured light sensor as the research object.According to the working principle of the sensor,on the basis of analyzing the influencing factors of the measurement accuracy,a test platform for the line structured light sensor is constructed,which can meet the testing requirements of this type of sensor under different measurement conditions.By testing and analyzing two sensors from different manufacturers,the accuracy characteristics of line structured light sensor are clarified.According to the analysis results,error compensation and parameter setting optimization are carried out,thereby improving the measurement accuracy of this type of sensor.The main research contents of this thesis are as follows:(1)Design of test platform for line structured light sensor.By studying the working principle and composition of the line structured light sensor,the internal and external factors affecting the measurement accuracy of the sensor are analyzed,and the test items are determined.According to the test requirements,the test platform design and test software development are completed,which can meet various test requirements of various types of line structured light sensors.(2)Test and analysis of factors affecting the measurement accuracy of line structured light sensors.Aiming at the internal factors(internal temperature and parameter setting)and external factors(the nature of the measured object and ambient light intensity)of the line structured light sensor,a test method is proposed and the actual test and analysis are carried out.The influence of various factors on the measurement accuracy of the sensor is clarified.(3)Test and analysis of stability and linearity of line structured light sensor.The test method of the stability and linearity of the sensor is proposed,and the actual test and analysis are carried out.The stability of different positions and the linearity of different measuring points in the working area of the line structured light sensor are obtained,and the influence of the performance of the sensor on the measurement accuracy is clarified.(4)Research on error compensation method and parameter setting optimization of line structured light sensor.By establishing the measurement error model during startup,the measurement error compensation method is studied.Through error compensation,the measurement error caused by the internal temperature change of the line structured light sensor is effectively reduced,and shorten the warm-up time after the sensor is turned on.By studying the test results affected by the sensor parameter settings,the method of optimal parameter setting is clarified.Through optimization,the stability and reliability of sensor measurement contour results are improved,the included angle measurement error is effectively reduced,and the necessity of parameter setting optimization is verified.