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The Design of Wheel Profile Measuring Device Based on Laser Distance Sensor

Author: GuanZuo
Tutor: WuJianLe
School: Southwest Jiaotong University
Course: Optical Engineering
Keywords: Wheel tread DSP-TMS320F2812 Laser distance sensor Optical encoder
CLC: U270.7
Type: Master's thesis
Year: 2010
Downloads: 121
Quote: 1
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Abstract


China's railway industry is the rapid development of high - speed locomotives become the mainstream of the passenger , and a large number of high-speed railway and subway is under construction . More and more attention for the operational safety of the locomotive locomotive faster . Served an important role as the locomotive wheels of the key components in the locomotive running safety and , therefore , the railway authorities of each country attaches great importance to the wheel monitoring a detection tasks . The world for many types of wheels measuring instruments , measuring parameters : wheel size , tread shape tread surface defects and internal testing . In this paper, research and design a wheel tread shape portable measuring instruments used to measure , using laser distance sensor and DSP-TMS320F2812 chip composed of measurement systems to complete the round on the size of the data collection , calculation, transmission and display function . Through a lot of preliminary research, laser distance sensor characteristics and wheel tread shape , to develop the design . The instrument consists of a laser fixed to the instrument platform , the reflected laser beam reflector , and connecting the mirror shaft photoelectric encoder . The coordinates of the Cartesian coordinate system through algorithms , DSP chip laser ranging and photoelectric encoder goniometer converted to the target point . The rotation of the reflecting mirror can make the instrument to obtain the coordinates of all points on the cross section of the tread , thereby forming the curve of the tread surface , the calculated size of the wheel tread shape . Article on the theoretical accuracy of the instrument , and the design of the shape of the instrument , to study the best mounting location . At the same time to complete the work as software programming, component selection, schematic draw the basic completion of the development of the instrument . Experimental platform , using the development board design verification , at the same time to do the analysis of the measurement results . The data results show that the instrument can be completed wheel profile measurement , and obtain the corresponding tread curve , has a certain reference value and application prospect .

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CLC: > Transportation > Rail transport > Vehicle Engineering > General issues > Vehicle testing technology and equipment
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