Use of Automated Machine Guidance within the Transportation Industry (2018) / Chapter Skim
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NCHRP Project 10-77 6 CHAPTER 2: BASIC AMG WORKFLOW PROCESSES Integrating AMG into transportation projects involves many decisions and workflow processes, including selection of surveying methods and technologies, software design and engineering analytic tools, machine systems, sensor technologies, data interoperability and transfer mechanisms, humanmachine interaction during construction and training (Fig.
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NCHRP Project 10-77 7 noticeable errors will occur for project much less that one mile in length if the curvature effect is not recognized. Establishing a reference system that is unique to a project (e.g., setting an arbitrary local reference point to x = 0, y = 0, z = 0)
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NCHRP Project 10-77 8 budget. Once this process is finished, the complete control file is created and sent out to all parties involved with the project.
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NCHRP Project 10-77 9 workflow Fig.
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NCHRP Project 10-77 10 Figure 2-3. Design Workflow Processes CONTRACTOR DATA PREPARATION Decisions about Using AMG When contractors are deciding whether a project is a candidate for employing AMG technology, certain factors should be considered.
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NCHRP Project 10-77 11 Data Preparation for 3D Conversion If the decision is made to use AMG, the contractor will need to develop a model specifically for construction use (Fig.
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NCHRP Project 10-77 12 Verify Existing Control Points After data preparation has been completed for the construction model, contractors will conduct a field survey using their own surveying equipment. The goal of the survey process is to locate and record the control points for the project according to the contractor's surveying equipment.
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NCHRP Project 10-77 13 Figure 2-4. Contractor Data Preparation Workflow Processes Customize Model for Operator Use Depending on the actual need, the model can be further customized to best fit the operator's specific machine.
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NCHRP Project 10-77 14 Implement Model into AMG-Ready Equipment Now, the machine control file is ready to be uploaded to the equipment. Basically, there are three types of files would be imported into the equipment, including surface model, line-work model, and calibration file.
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NCHRP Project 10-77 15 Figure 2-5(a)
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NCHRP Project 10-77 16 Figure 2-5(b)
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