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Development of Vehicle-Mounted Measuring Devices for Non-Contact Thickness and Uniformity Measurement of Thermoplastic Pavement Marking Material.
| 题名： | Development of Vehicle-Mounted Measuring Devices for Non-Contact Thickness and Uniformity Measurement of Thermoplastic Pavement Marking Material. |
| 作者： | CHEN, X.; CHEN, Y.; CHOPRA, P.; EKBOTE, A.; LI, J.; LIU, R.; SUN, W. |
| 关键词： | HIGHWAY SPEED; THERMOPLASTIC PAVEMENT MARKING MATERIAL; VEHICLE-MOUNTED MEASURING DEVICES |
| 摘要： | In this project, the researcher successfully developed a highway speed vehicle-mounted thermoplastic pavement marking material (TPMM) thickness measurement device based on the research results in Project 0-4882, Refinement of a Non- Contact Method to Determine the Thickness and Uniformity of Application for Thermoplastic Pavement Marking Material. The device can be used in routine TxDOT project monitoring practice. In Project 0-4882, a compact, light-weight pushcart laser device was successfully developed for measuring TPMM thickness. In comparison with the laser device developed in Project 0-4882, two new versions of vehicle mount laser thickness measurement devices have been developed in this project. The first new version, a point laser device, uses three synchronized point laser units to solve the inaccuracy problem caused by the slope of the road. The second new version, a scanning laser device, was developed based on the auto-synchronized laser scanning principle. This new scanning device can scan in the transverse direction and measure the average cross-section TPMM thickness. Since the scanning laser covers an area wider than the TPMM, the driver doesn't need to strictly follow the stripe, and the measurement accuracy will be increased on a bumpy or sloping road. In this report, the laser triangulation and auto-synchronized scanning laser method is briefly reviewed. Then, the specifications of the laser devices and field test results are presented. |
| 报告类型： | 科技报告 |
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