GPR4 Pavement Scanner – User Manual Earth Science Systems, LLC D-000002-000022 February 29, 2019 GPR4 Pavement Scanner User Manual Copyright © 2019 ESS, LLC. All rights reserved.
GPR4 Pavement Scanner – User Manual Earth Science Systems, LLC D-000002-000022 February 29, 2019 Table of Contents 1 2 3 FCC Class A Compliance and Usage Limitations................................................................ 3 IC Compliance and Usage Limitations ................................................................................ 5 Introduction ......................................................................................................................... 6 3.1 Overview.........
GPR4 Pavement Scanner – User Manual Earth Science Systems, LLC D-000002-000022 February 29, 2019 1 FCC Class A Compliance and Usage Limitations This device complies with Part 15 Subpart B and Subpart F of the FCC Rules. Operation is subject to the following two conditions: (1) the device may not cause harmful interference, and (2) this device must accept any interference received including interference that may cause undesired operation. FCC ID: 2AP78-PS1 and contains RF Module FCC ID: Z64-WL18DBMOD.
GPR4 Pavement Scanner – User Manual Earth Science Systems, LLC D-000002-000022 February 29, 2019 pertinent contact information of the user, the desired geographical area(s) of operation, and the FCC ID number and other nomenclature of the UWB device. If the imaging device is intended to be used for mobile applications, the geographical area(s) of operation may be the state(s) or county(ies) in which the equipment will be operated.
GPR4 Pavement Scanner – User Manual Earth Science Systems, LLC D-000002-000022 February 29, 2019 2 IC Compliance and Usage Limitations This device complies with Canadian RSS-220, RSS-GEN and ICES-003. Operation is subject to the following two conditions: (1) the device may not cause harmful interference, and (2) this device must accept any interference received including interference that may cause undesired operation. IC: 2AP78-PS1 and contains RF Module IC:451I-WL18DBMOD.
GPR4 Pavement Scanner – User Manual Earth Science Systems, LLC D-000002-000022 February 29, 2019 3 Introduction 3.1 Overview This document provides the operating and configuration instructions for the Pavement Scanner. The Scanner measures pavement density, compaction, and temperature; and can generate maps and reports for the scan area. The Scanner utilizes cutting-edge radar technology to measure density without using nuclear sources.
GPR4 Pavement Scanner – User Manual Earth Science Systems, LLC D-000002-000022 February 29, 2019 2. A multi-port battery charging system that simultaneously charges the sensor unit, its spare battery, the wireless odometer, and the tablet computer. 3. Two batteries for the sensor unit. 4. A three wheeled cart with an integrated wireless odometer. 5. The sensor unit with GPR, IR, and GPS sensors. 6. Tablet computer (may be provided separately).
GPR4 Pavement Scanner – User Manual Earth Science Systems, LLC D-000002-000022 February 29, 2019 4.1 Hardware Assembly During normal storage and transportation, the Pavement Scanner is packed in its shipping case. Proceed as follows to assemble the unit for surveying. 1. Open the shipping container and disconnect the charging cables from the tablet, the odometer, and the batteries. 2. Remove the wheels and legs and attached the wheels to the legs.
GPR4 Pavement Scanner – User Manual Earth Science Systems, LLC D-000002-000022 February 29, 2019 Figure 3. Upper panel shows acquisition program with status panel visible and lower panel has status panel hidden. Use the circled icon to hide/show the status panel. 4.2 Conduct a Survey To conduct a survey, proceed as follows. Copyright © 2019 ESS, LLC. All rights reserved.
GPR4 Pavement Scanner – User Manual Earth Science Systems, LLC D-000002-000022 February 29, 2019 1. Turn on the power to the sensor unit and the odometer. Both power switches should glow with a green light. 2. Boot up the tablet computer and log in. Enable mouse pointer using the mouse icon on the task bar if desired. 3. Connect to the sensor unit via WiFi. On the task bar, press the WiFi network icon , then select the network connection for the Pavement Scanner.
GPR4 Pavement Scanner – User Manual Earth Science Systems, LLC D-000002-000022 February 29, 2019 e. Depth/Time range Users can opt to display the full range, half range, quarter range, or eighth range. Users may wish to display only a shallow portion of the usable range when interested in the more shallow portions of the surveyed range (depth). f. Velocity of medium The velocity of EM waves is dependent on the material type.
GPR4 Pavement Scanner – User Manual Earth Science Systems, LLC D-000002-000022 February 29, 2019 The GPR4 Record tab also has buttons for saving the B-scan image and generating a short report . The image can be saved as a PNG, BMP, or JPG file. The report will be saved as a PDF file, and will contain the survey metadata and the B-scan image. 7. The Survey Grid tab shows how the linear traverses making up the survey will be arranged.
GPR4 Pavement Scanner – User Manual Earth Science Systems, LLC D-000002-000022 February 29, 2019 Figure 5. Upper panel shows a survey grid with three parallel lines, and lower panel shows the survey grid dialog. 8. Before beginning a survey, it is important to capture information about the jobsite. Press the Jobsite information button to bring up the dialog shown in Figure 6. The information entered into this dialog will be listed in any reports that will be generated by the software.
GPR4 Pavement Scanner – User Manual Earth Science Systems, LLC D-000002-000022 February 29, 2019 c. Local Frame Parameters Select the distance Units (feet or meters). Enter the bearing of the first survey line in the Line 1 Azimuth field. The software will use this value to correctly orient images on maps that are exported as KMZ or HTML files. Figure 6. Jobsite information dialog. 9. Enter the calibration dialog by pressing the Calibrate button.
GPR4 Pavement Scanner – User Manual Earth Science Systems, LLC D-000002-000022 February 29, 2019 10. Move the scanner to the start position of the first line. For maximum accuracy in the pavement density/compaction measurement please allow the sensor unit to stabilize for 20 minutes after power up. The internal temperature stability should be less than 0.12 degrees per minute (see Internal Temperature Stability on the Pavement Condition tab).
GPR4 Pavement Scanner – User Manual Earth Science Systems, LLC D-000002-000022 February 29, 2019 3. If a different mix calibration will be used, press the Calibrate button and open the appropriate max calibration. Skip this step to use the mix calibration that was originally used when recording data. 4. Press the button and input the desired grid layout that will be used when replotting the data. 5. Select File, Open, and then the file to replay. 6.
GPR4 Pavement Scanner – User Manual Earth Science Systems, LLC D-000002-000022 February 29, 2019 Figure 8. Density map overlay in a Google Maps HTML file. 4.5 Charging the Batteries There are four rechargeable batteries in the system that provide sufficient power for operation over a full day. The battery in the scanner unit provides power for 4-5 hours. A second battery is provided so that surveying can continue after the first is depleted.
GPR4 Pavement Scanner – User Manual Earth Science Systems, LLC D-000002-000022 February 29, 2019 5 Theory 5.1 Theory of Operation The pavement scanner uses ground penetrating radar (GPR) and infrared (IR) sensing to characterize the surface beneath the sensing unit [1]. The GPR sends a low-energy impulse of electromagnetic (EM) energy towards the surface. Some of this energy penetrates into the subsurface and some is reflected back towards the sensor unit.
GPR4 Pavement Scanner – User Manual Earth Science Systems, LLC D-000002-000022 February 29, 2019 E = εT 4 where T is temperature and ε is the emissivity of the asphalt. The emissivity of a black body is 1.0, which is essentially the case for fresh asphalt. By measuring E and solving for T, the surface temperature can by surveyed using a non-contacting sensor. Because asphalt is not a perfect black body, the measured temperature may not be precisely accurate.
GPR4 Pavement Scanner – User Manual Earth Science Systems, LLC D-000002-000022 February 29, 2019 6 Appendix 6.1 Digitizer Settings The default settings for the digitizer are sufficient for nearly all surveys. Advanced users may choose to change these settings (see Figure A1). To view or change the digitizer settings, select (File, Settings). 1. Trace Sample Rate Select the desired number of traces per second.
GPR4 Pavement Scanner – User Manual Earth Science Systems, LLC D-000002-000022 February 29, 2019 c. Microsoft Surface Go d. Panasonic Toughpad FZ-G1 2. Turn on the tablet, wait for it to boot up, and then log in. 3. Press the Window icon in the lower left corner, then select Settings (the gear shaped icon). Select System, Display, and set the Resolution to 1920 x 1200. Then set the Orientation to Landscape. Finally, set Rotation lock to On. Close the Settings window. 4.
GPR4 Pavement Scanner – User Manual Earth Science Systems, LLC D-000002-000022 February 29, 2019 Except as specified above, the PRODUCT is provided "as is" without warranty of any kind, either expressed or implied, including, but not limited to, the use or result of use of the product in terms of correctness, accuracy, reliability, currentness or otherwise. The entire risk as to the results and performance of the PRODUCT is assumed by you.
GPR4 Pavement Scanner – User Manual Earth Science Systems, LLC D-000002-000022 February 29, 2019 UN3481 For assistance call 800-537-4183 Figure A2. Shipping label for container with batteries. 6.7 Technical Support Technical support is provided by Humboldt Scientific, Inc. between the hours of 9:00 AM and 5:00 PM EST at 800-537-4183. Copyright © 2019 ESS, LLC. All rights reserved.
GPR4 Pavement Scanner – User Manual Earth Science Systems, LLC D-000002-000022 February 29, 2019 6.8 Specifications • • • • • • • • • • • • • 2 GHz bi-static radar antenna Non-contacting IR temperature sensor Designed to be used with the Microsoft Surface Pro 4 table PC. Dimensions: 71.5 x 25.9 x 36.5 inches Shipping container dimensions: 29 x 18 x 13.8 inches Weight: 36.
GPR4 Pavement Scanner – User Manual Earth Science Systems, LLC D-000002-000022 February 29, 2019 6.9 Data File Format Data recorded by the GPR system are stored using the HDF5 file format. HDF5 allows storage of large datasets in complex data structures. In addition to the data stored in an HDF5 file, the files provide all of the data type and format information needed for reading the data.
GPR4 Pavement Scanner – User Manual Earth Science Systems, LLC D-000002-000022 February 29, 2019 6.10 License Agreement End User License Agreement (EULA) for EssGPR4LoggingApp This is a legal agreement between Earth Science Systems, LLC and you, the Customer. By installing this software, you accept all the terms and conditions of this agreement.
GPR4 Pavement Scanner – User Manual Earth Science Systems, LLC D-000002-000022 February 29, 2019 6.11 References [1] Maser, K., and Carmichael, A., Ground Penetrating Radar Evaluation of New Pavement Density, Washington State Department of Transportation Research Office, Olympia, WA, 2015, Report No. WA-RD 839.1, 16 p. [2] Kim M., Phaltane P., Mohammad L., and Elseifi, M., Temperature Segregation and its Impact on the Quality and Performance of Asphalt Pavements, Front. Struct. Civ. Eng.
