Two-dimensional Positioning Technology Of Single Line Sensor In Restricted Environment

In daily production and life,we often need to obtain the target two-dimensional position,and carry out the next step according to the obtained position information.The target position measurement is of great significance to our production and life.At present,the development of measurement technology has also made a leap-forward development.However,in some restricted environment,common measurement techniques are difficult to achieve two-dimensional positioning of the target.Based on the premise of small measurement space,dark background light,weak light source,active passive light source,low cost and short measurement period,it is necessary to realize high-precision measurement of the target two-dimensional position.This paper made fully research based on this background.This paper analysed the characteristics of existing optical measurement technology,selected binocular single line array sensor,combined multi-slot imaging principle,constructed mathematical model,started analysis from double-slit imaging principle,and proposed model optimization scheme according to the problems existing in mathematical model,and improved the mathematical model step by step.In the analysis of the mathematical model,a special slit is constructed,that is,the distance between adjacent slits is not proportional.It can make the target have orthogonality between images formed by multiple slits on the sensor.That is,the orthogonality between the images formed by the target at any two different positions within the measurement range,and the inner product result of the two images is small.According to this characteristic,the design scheme of template matching was proposed.When the target is in a certain position,the image on the sensor is used as the mother board.When the target is in other positions,the corresponding sensor image can be obtained by translation and expansion of the mother board,and the mother board is different.The degree of translation and expansion transformation constructs the image of the sensor corresponding to the other position.As the sub-board,the sensor image obtained by the actual measurement and the sub-board cycle are used for inner product calculation,and the sub-board with theinner product maximum was found.The corresponding target position is the position of the target to be tested.The scheme was simulated by MATLAB platform to verify the feasibility of the scheme.Then,through the actual experimental measurement,the experimental data was processed in various aspects to make it move closer to the ideal model,analysed the error source of the actual positioning result,compared the parameter difference between the actual environment and the mathematical model,further adjust the system algorithm,analysed and summarized some problems and solutions in actual experiments.