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Содержание PDP1000

Страница 1: ...2020 00005 00 ...

Страница 2: ...ii ...

Страница 3: ...5 or register your product online at www sensoft ca product registration Name Company Name Address City State Province Zip Code Country E mail Phone Fax Component Serial Numbers refer to packing list or the sticker on the component Comp Serial Comp Serial Comp Serial Comp Serial Comp Serial Comp Serial Comp Serial Comp Serial Comp Serial Comp Serial Vendor Name Date Received ...

Страница 4: ...Warranty Confirmation iv ...

Страница 5: ...ware Inc grants the right to use its software CDs memory sticks or other storage media and documentation hereafter collectively called SOFTWARE PRODUCT by means of a SOFTWARE PRODUCT license You acknowledge and agree that Sensors Software Inc retains worldwide title and rights to all its software and that the SOFTWARE PRODUCT contains proprietary materials protected under copyright trademark and t...

Страница 6: ...er s warranty and are not the responsibility of Sensors Software Inc Sensors Software Inc makes no other warranties including but not limited to any implied warranty of merchantability or fitness for a particular purpose If this product is defective within the warranty period stated above your exclusive remedy shall be at Sensors Software Inc s option to replace or repair the Sensors Software Inc ...

Страница 7: ...rminate this agreement and have the license fee refunded by returning all copies of the SOFTWARE PRODUCT postage prepaid with a copy of the receipt If failure of any PRODUCT resulted from accident abuse or misapplication Sensors Software Inc shall have no responsibility to replace the SOFTWARE PRODUCT refund the license fee or replace or repair the HARDWARE PRODUCT Do not tamper with any PRODUCT P...

Страница 8: ...ights in this agreement or take action against any other party in the event of a breach of this agreement shall not be considered a waiver of the right to subsequent enforcement of its rights or actions in the event of subsequent breaches by the other party Acknowledgement You acknowledge that you have read this agreement understand it and agree to be bound by its terms and conditions You further ...

Страница 9: ...attery charger AC adapter The battery charger AC adapter is rated for indoors use only Do not replace detachable MAINS supply cords for the battery charger AC adapter by inadequately RATED cords The exterior of this product should be cleaned using a damp cloth Safety Symbols Consult this documentation in all cases where this safety symbol appears This symbol is used to inform you of any potential ...

Страница 10: ...x ...

Страница 11: ...Warning Messages 39 4 3 Stats 40 4 4 Admin Settings 41 4 4 1 System Admin 41 4 4 2 Software Update 42 4 4 3 Network Settings 45 4 4 4 Locale Settings 46 4 4 5 Date and Time 47 4 4 6 Logs 48 5 Methodology 49 5 1 Importance of density measurements 49 5 2 How PDP works 49 5 3 Usage scenarios 49 5 3 1 Dielectric Permittivity K for uniformity 50 5 3 2 Transforming Dielectric Permittivity K to density 5...

Страница 12: ...65 9 Technical Specifications 67 Health Safety Certification A 1 GPR Emissions Interference and Regulations B 1 Instrument Interference C 1 Safety around Explosive Devices D 1 Wi Fi Module E 1 Calibration F 1 Converting Permittivity to Density G 1 Glossary H 1 ...

Страница 13: ... continuously along a line profile or at discrete locations Data can be downloaded for processing and creating summary reports Features of the PDP include Rugged sunlight readable display tablet Wireless connection from tablet to PDP sensor Internal and optional external GPS receiver for georeferencing data Simple user interface providing results in real time Different types of measurements can be...

Страница 14: ...PDP User s Guide Overview 2 ...

Страница 15: ...ow to assembly the PDP after you receive it Figure 2 1 Fully assembled PDP 2 1 Assembly PDP is shipped nearly assembled and only requires a few connections to be made Place the main cart handle onto the frame of the fiberglass cart Figure 2 2 then insert the handle pin through the holes on both sides and close them Figure 2 3 ...

Страница 16: ... handle to the cart frame Figure 2 3 Inserting pin to secure handle to cart Place the PDP sensor onto the cart Figure 2 4 and secure tightly using the two straps on either end of the sensor Figure 2 5 Make sure the ports on the PDP sensor are facing the handle side ...

Страница 17: ...PDP User s Guide Getting Started 5 Figure 2 4 Place PDP sensor onto the cart frame Figure 2 5 Secure PDP sensor with straps on either end ...

Страница 18: ...nd secure by pressing down on the clamp above until firmly secured Figure 2 6 Figure 2 6 Securing tablet to docking station To remove the tablet release the locking mechanism on the back side Figure 2 7 then remove the tablet Figure 2 7 Release locking mechanism to remove tablet ...

Страница 19: ...g Started 7 2 2 External GPS optional Insert the GPS mount into the PDP handle as shown in Figure 2 8 and insert pin through the hole to secure Figure 2 9 Figure 2 8 Inserting GPS mount Figure 2 9 Securing GPS mount with pin ...

Страница 20: ...be charged for at least 4 hours so it is fully charged The charge indicator 5 in Figure 2 11 will light up when charging and turn off when it s done 2 4 Connections and Cable Management There are a few connections that need to be made Figure 2 11 Labelled items on the PDP sensor 1 GPS port 2 Odometer port 3 Power button 4 Battery charger port 5 Battery charge indicator 1 Connect the serial port en...

Страница 21: ...cable connect it to the PDP sensor and make sure the cable is tight and fastened to the fibreglass frame as you route it upwards towards the GPS receiver Figure 2 12 If there is any excess cable secure it near the GPS using the Velcro straps provided Finally connect the GPS cable into the GPS receiver Figure 2 13 Figure 2 12 Make sure the GPS cable is routed as shown and secured to the cart as it ...

Страница 22: ...PDP User s Guide Getting Started 10 Figure 2 13 Plug the GPS cable into the GPS receiver The completely assembled PDP system should look as shown in Figure 2 14 Figure 2 14 Assembled PDP System ...

Страница 23: ... turn on and remain on while the PDP sensor is powered up Turn on the tablet and from the main screen double click the PDP icon to launch the PDP Application Software Section 4 When shutting down the PDP system it is best to shut down from the PDP software Figure 4 2 If necessary the PDP sensor can also shut down by pressing and holding the Power button for a few seconds ...

Страница 24: ...PDP User s Guide Getting Started 12 ...

Страница 25: ...Tablet The tablet that is included with PDP is a Winmate M101P ME tablet running the Windows operating system Some basic functions are described below for full operational details please consult the online User s Guide Figure 3 1 Functions of the Winmate tablet ...

Страница 26: ...e the tablet has booted up you will see the main screen in Figure 3 2 Tap the PDP icon twice to launch the program Figure 3 2 Main screen when turning on tablet To shut down the tablet press the Windows icon in the top left then press the power icon as shown in Figure 3 3 From here you have the option of putting the tablet to sleep shutting it down or doing a restart ...

Страница 27: ...rned on they will automatically connect to each other This can be confirmed by pressing the Wi Fi icon in Figure 3 4 and seeing which network is connected to the tablet The PDP network will have the format of PDPxxxxxxxx where the xxxxxxxx represents the last 8 digits of the PDP serial number which can be found on a sticker on the PDP ...

Страница 28: ...network can be identified by the last 8 digits of the PDP serial number NOTE If prompted the password for the PDP is the same as the network name For example if the network is called PDP00000005 then that is also the password 3 2 Brightness Since the PDP will usually be used outdoors ensure the brightness is set for comfortable viewing The back side of the tablet has a button to increase and decre...

Страница 29: ...PDP User s Guide Navigating the Tablet 17 Figure 3 5 Highlighting the battery icon ...

Страница 30: ...PDP User s Guide Navigating the Tablet 18 ...

Страница 31: ... detail in this section 1 side menu to switch between Collection mode and Admin settings There is also the option to shutdown PDP from here and to change the display theme 2 GPS indicator battery indicator and the ability to launch this manual 3 PDP sensor battery level icon and percentage display 4 pressing this button will start collecting data 5 configure settings prior to collecting data 6 cre...

Страница 32: ...al bars often called a Hamburger button Pressing this button displays a menu as shown in Figure 4 2 Figure 4 2 Dropdown menu on left Pressing Admin switches to the Admin screen described in Section 4 4 Pressing Pavement Profiler returns to the main data collection screen Use the slider to change the Theme The background can be toggled between Light default and Dark themes This is a personal prefer...

Страница 33: ...e display of some of the other options on the screen Profile shown in Figure 4 3 this mode involves pushing the PDP over a survey line or area and collecting a continuous profile of data Typically this is done to investigate density changes over an area In most cases this is done immediately after the asphalt has been laid compacted and allowed to cool Multiple profiles can be collected and used t...

Страница 34: ...t data at core locations Figure 4 4 The System Configuration screen showing Stationary collection mode Trigger Method only available when Collection mode Profile User has the following options Figure 4 3 Odometer data collection is controlled by the integrated odometer connected to the left rear wheel of the cart A data sample or trace is collected every 10 cm of distance travelled Free Run data i...

Страница 35: ...ter lengths are 0 5 m 1 0 m 5 0m or OFF If running in free run mode available filter lengths are 6 11 or 51 traces or OFF While applying a filter does change the saved data the original data can be restored in the PDP Toolkit PC software by removing the applied filter Measurement Interval only available if Collection mode Profile and Trigger method Free run the measurement interval controls how of...

Страница 36: ...f using an external GPS for greater positional accuracy when collecting georeferenced data Figure 4 6 Figure 4 6 Profile collection showing GPS data An optional external Topcon GPS can be supplied which is pre configured to seamlessly connect with the PDP The built in Internal GPS has a stated accuracy of 10m while the external Topcon has a stated accuracy of 1m If you choose to connect and utiliz...

Страница 37: ...con GPS supplied with PDP this is set to 19200 Power Serial Port only available if GPS Device External the serial port where the GPS cable is connected can also output power thereby enabling a single GPS cable to be used for power and data NOTE If using a 3rd party GPS it is the responsibility of the user to confirm with the GPS manufacturer that the serial cable does not provide power to the GPS ...

Страница 38: ...electric permittivity this is the initial value calculated by PDP Relative permittivity is expressed as a unitless quantity relative to the permittivity of free space All other parameters below are derived from the relative permittivity Density displays absolute density of the asphalt expressed in units of g cm3 This is a simple calculation that derives density from the observed relative permittiv...

Страница 39: ...s and Maximum Density values filled in under the Parameters tab otherwise an error will result Relative Density sometimes called normalized density or percentage compaction this parameter expresses the density measured as a percentage of the site specific maximum density To calculate the relative density the max density must be set under Plot Options This is usually obtained from a core sample via...

Страница 40: ... PDP Collection Software 28 Figure 4 8 Plot Options showing the data to be displayed Pressing the Parameters button will display a window Figure 4 9 with the following options Figure 4 9 Window for entering Parameters ...

Страница 41: ...can be calculated from the PDP Toolkit software The coefficients can be input here so subsequent PDP measurements will be accurate The more accurate the information obtained the more accurate the future PDP measurements for that section of road The above 4 values are required before data can be plotted showing Density Site Specific Relative Density and Air Void Content The details on measuring max...

Страница 42: ...itself Touching the Download button copies the files to the Winmate tablet where they can be exported to a USB drive Details of downloading data and the files obtained are discussed in Section 6 Diagnostic Export toggle the Diagnostic Export button off and on to download additional data used for system diagnosis only if advised to by the manufacturer Delete All Lines touching this button will dele...

Страница 43: ...ll advise that the data will be displayed with the settings used during collection and may differ from the current settings This means that whatever settings were used during the original data collection will be applied to the data that is loaded rather than the current settings in the Tools menu Edit Description displays a window where the user can edit or add a description for that line The desc...

Страница 44: ...dation target supplied with the system The test will take approximately 5 minutes to complete The sensor needs to be set upside down on the asphalt Ensure there are no objects within 1 meter of the PDP Sensor and that nobody walks by the sensor during the test From the PDP main screen press Tools then press the Sensor Test tab You will see the screen in Figure 4 11 Figure 4 11 Sensor validation te...

Страница 45: ...PDP User s Guide PDP Collection Software 33 Figure 4 12 Turn Sensor upside down on a flat surface Figure 4 13 Place validation target as described on screen ...

Страница 46: ...dicating whether it passed or failed Figure 4 15 If it failed you will be able to re try the test Failure of the test does not mean the system is not working data can still be collected It is still a good idea to contact Sensors Software if the validation test fails repeatedly Figure 4 15 Validation test passed ...

Страница 47: ...the next available line is displayed under Start If desired enter a description of the line Figure 4 16 Otherwise leave the description blank and just touch Apply If a description was used for an earlier line the Last Used Text button will be enabled otherwise it will be greyed out Pressing this button will insert the most recently used description The system will then start collecting data Collec...

Страница 48: ...displayed on the right side showing the current value as well as the min max and average values obtain for this line If a GPS is enabled the GPS positions are also displayed In the top right of the screen there are few icons These are explained from left to right GPS quality indicator refers to the external GPS Highlighted bars indicate quality of signal If it says Disconnected then the GPS is unp...

Страница 49: ... up arrow To put a flag on the screen to mark this area touch the flag button at the bottom of the screen A number flag is inserted at that point Figure 4 19 Flags are sequentially numbered so multiple flags can be added on a line It is recommended to use flags to mark locations of cores or other surface features such as pavement joints for example The flag numbers reset on each new line To resume...

Страница 50: ...lection will be stopped after the specified time has passed and the file written A progress bar displays the time completed as a percentage of the total time selected Pressing Stop before the time has passed will stop collection and write the file If the user selects Continuous data collection it will keep collecting data until the user presses Stop No progress bar is displayed A common use of thi...

Страница 51: ...rror message will momentarily pop up at the bottom of the screen saying skipped traces detected please slow down Data collection will still continue 2 If the PDP is unable to determine the desired measurement it will display an error saying an error has occurred while processing data This is rarely encountered and data collection will still continue However check to make sure that no loose items c...

Страница 52: ...sity Site Specific Relative Density or Air Void Content they would need to enter the A B C and Max Density Values under the Parameters button before these can be plotted After pressing the Stats button a window will pop up advising that the user can view the file press View or just move on with out viewing press Done Pressing View will download the PDF file immediately to the Tablet Downloads dire...

Страница 53: ...w 4 4 1 System Admin The system admin tab displays an overview of version numbers for the hardware and software Figure 4 21 There are several buttons available on this page described below Figure 4 21 Admin page Shutdown press this button to shutdown the PDP sensor Delete All Lines press this button to delete all lines saved on the PDP Browse pressing this button in the Software Update window allo...

Страница 54: ...PDP Make sure you download any important data to the tablet before performing this operation Figure 4 22 Select the file to begin the upgrade process Make sure the file is on a USB Drive and the USB Drive is connected to the tablet Navigate to the USB drive and to the directory containing the en file If the file is already on the tablet navigate to the directory containing the en file Pressing thi...

Страница 55: ...he file Press Reboot to complete the PDP application installation Figure 4 24 After installation completes you will have to manually start the PDP by pressing the On button on the PDP Sensor If you decide to abort his process and not update the new firmware press Clear ...

Страница 56: ...PDP User s Guide PDP Collection Software 44 Figure 4 24 Software update ready to proceed ...

Страница 57: ...r s Guide PDP Collection Software 45 4 4 3 Network Settings Displays settings related to the PDP Wi Fi connection Figure 4 25 None of these fields can be edited by the user Figure 4 25 Network Settings window ...

Страница 58: ...ntry Region drop down menu to select the country where PDP will be operated Figure 4 26 This sets the Wi Fi power appropriately to meet local standards and regulations Touch Submit make the change and then reboot the system for the change to take affect Figure 4 26 Locale Settings ...

Страница 59: ...te and Time The Date and Time tab displays the current time and date on the PDP Figure 4 27 Pressing Synchronize will set the time on the PDP as the same time on the tablet Pressing Submit will upload the changes to the PDP Figure 4 27 Setting date time ...

Страница 60: ...ftware 48 4 4 6 Logs This tab displays a run time log of the PDP Figure 4 28 Pressing the Download Logs button will download the logs to tablet The logs can be useful when troubleshooting the system Figure 4 28 Displaying the Log report ...

Страница 61: ...but only offer point measurements which is not representative of an entire asphalt pour 5 2 How PDP works PDP is based on Ground Penetrating Radar GPR technology It works by measuring the bulk electrical properties of the asphalt based on the reflected radio wave from the surface of the material A radio wave is transmitted from the PDP sensor downward towards the asphalt When the wave hits the asp...

Страница 62: ...n area provides the same information as the variability of density over that area Since K values can be determined at cm intervals the detail on variability can be mapped at a far higher spatial resolution than could ever be attained for coring density determinations Statistics on the variation of K will be very similar to the statistics of density The location of extreme high and low K values wil...

Страница 63: ...sity units is helpful as density is the standard asphalt variability measurement All of the steps described in using permittivity above are followed in this methodology The user has only to select display density instead of permittivity K PDP will now output density in grams per cubic centimeter g cm3 The variation in density will be the same as the variation of asphalt density but the absolute va...

Страница 64: ...his correction factor can be applied to the whole data set 5 3 3 Transforming Dielectric Permittivity K to Site Specific Density To obtain a site specific density the PDP requires a more detailed conversion of permittivity to density The approach normally used is to take PDP measurements over an area or along a transect of new asphalt pavement A series of points where there are zones of high low a...

Страница 65: ... mode to collect data at these locations Use the PDP Toolkit PC Software to enter this information in a chart form along with the site specific maximum density Use the PDP Toolkit PC Software to compute and determine the A B and C coefficients Apply the calculated A B and C coefficients and the Maximum Density in the PDP Toolkit software using the modify parameters utility Now any collected lines ...

Страница 66: ...PDP User s Guide Methodology 54 ...

Страница 67: ...ools under the File Management tab all the files that are on the PDP are listed Figure 6 1 Touch Download to wirelessly copy the files to the tablet Toggle the Diagnostic Export button to include additional data used for system diagnosis only if advised to by the Sensors Software Figure 6 1 Downloading data under the File Management tab The PDP files will be downloaded as a ZIP file date and time ...

Страница 68: ...e USB can now be inserted into a computer 6 2 Downloaded files Insert the USB into a computer You will first need to extract the files from the zip file that is downloaded Double click on that file or right click and select Extract All Once you extract the directory structure will be as follows Lineset Line1 csv Line1 pdp Line1 pdf only generated if user presses Stats System Info o app log o cp lo...

Страница 69: ...g files contains system diagnostic information and is used to troubleshoot issues If the Diagnostic Export button was enabled a file ending in GPZ is also exported This maybe requested by the Sensors Software for technical support 6 3 PDP Summary report All Summary Reports contain a histogram plot This plot shows the distribution of the selected display parameter e g relative density for the given...

Страница 70: ...PDP User s Guide Exporting Data 58 Figure 6 3 Summary report for a Stationary line ...

Страница 71: ... of 149 measurements were taken Since Density was chosen as the parameter to display the histogram plot shows the distribution of density for the 149 measurements A complete Profile view of density vs position is shown starting on page 2 Figure 6 5 If the line is longer than 10m then the position range auto scales and generates subplots beneath allowing the user to see more detail ...

Страница 72: ...PDP User s Guide Exporting Data 60 Figure 6 4 Summary report for a Profile Line page 1 ...

Страница 73: ...PDP User s Guide Exporting Data 61 Figure 6 5 Summary report for a Profile line page 2 ...

Страница 74: ...en a USB stick is not recognized by the tablet In this case you may need to format the USB stick Ensure that it s formatted as FAT FAT32 Also ensure that there are no hidden or write protected partitions on the USB drive If the problem persists after formatting try another USB stick ...

Страница 75: ...run the system is insufficient power usually from a dead battery When connected to the PDP sensor you can check the amount of battery power remaining from the top right corner of the PDP collection software Figure 7 1 Figure 7 1 Checking remaining battery power The PDP contains a 9 Amp hour Li Ion battery which will run the PDP continuously for 4 6 hours before recharging is necessary 7 2 Cable Ca...

Страница 76: ...llow the system to sit in rainy conditions for long periods of time Cables are not covered by the warranty Improper use and or neglect will result in downtime until they are repaired or replaced 7 3 Connectivity Issues The tablet is configured to wirelessly connect to the PDP sensor at the factory Occasionally it is possible that it might lose this connection If it fails to connect see Section 3 1...

Страница 77: ...0120 PDP Tablet Tray Assembly 3 100 53 0121 PDP Validation Target 4 100 52 0138 Topcon GPS Cable for PDP Cart System 5 100 53 0100 LMX200 Cart GPS Mount Assembly 6 125 30 0006 Topcon GPS Antenna 7 100 22 0100 Pavement Density Profile PDP Electronics also referred to as the PDP Sensor 8 126 90 0090 PDP Hold Down Strap 9 100 22 0101 Winmate 10 Tablet PC 10 122 10 0093 Safety Locking Pin 100 55 0024 ...

Страница 78: ...PDP User s Guide Parts Components 66 ...

Страница 79: ...l 0 1s to 5s in free run mode Weight and dimensions Dimension L x W x H 145 x 84 x 118 cm 57 x 33 x 46 in Weight including Tablet Sensor and Cart 14 2 kg 31 3 lbs Display Rugged Tablet PC Screen size 10 1 inch display with LED Backlight Dimension L x W x H 27 2 x 19 7 x 1 9 cm 10 7 x 7 76 x 0 7 in Weight 1 2 kg 2 64 lbs Footprint size Fresnel Zone 30 cm 11 8 in Environmental Temperature Ruggedized...

Страница 80: ...e permittivity accuracy K 2 30 0 04 Single location relative permittivity repeatability 1 5 PDP is factory calibrated and can be quickly validated in the field with the provided validation procedures Ground Penetrating Radar is part of AASHTO Designation PP 98 xx where xx is the revision number ...

Страница 81: ...e exposures and time duration specified by the FCC and OSHA vary with excitation frequency The lowest threshold plane wave equivalent power cited is 0 2 mW cm2 for the general population over the 30 to 300 MHz frequency band All other applications and frequencies have higher tolerances as shown in graphically in Figure B 1 Figure B 9 1 FCC limits for maximum permissible exposure MPE plane wave equ...

Страница 82: ...sion Office of Engineering Technology OET Bulletin 56 Contains many references and web sites 2 Evaluation Compliance with FCC Guidelines for Human Exposure to Radio Frequency Electromagnetic Fields USA Federal Communications Commission Office of Engineering Technology OET Bulletin 56 Contains many references and web sites 3 USA Occupational Safety and Health Administration regulations paragraph 19...

Страница 83: ...he following two conditions this device may not cause harmful interference and this device must accept any interference received including interference that may cause undesired operation Part 15 User Information This equipment has been tested and found to comply with the limits for a Class A digital device where applicable and for an ultra wide bandwidth UWB device where applicable pursuant to Par...

Страница 84: ...s not actually result from the inspection the intended purpose of the operation of the UWB device is to determine if construction is required We also believe that the GPRs and wall imaging systems may be operated for one of the purposes described in the regulations but need not be operated directly by one of the described parties For example a GPR may be operated by a private company investigating...

Страница 85: ... imaging system requires additional coordination or within which the operation of an imaging system is prohibited If additional coordination is required for operation within specific geographical areas a local coordination contact will be provided Except for operation within these designated areas once the information requested on the UWB imaging system is submitted to the FCC no additional coordi...

Страница 86: ...use the FCC ID from the product when submitting a coordination request FCC GROUND PENETRATING RADAR COORDINATION NOTICE NAME ADDRESS CONTACT INFORMATION CONTACT NAME AND PHONE NUMBER AREA OF OPERATION COUNTIES STATES OR LARGER AREAS FCC ID EQUIPMENT NOMENCLATURE Send the information to Frequency Coordination Branch OET Federal Communications Commission 445 12th Street SW Washington D C 20554 ATTN ...

Страница 87: ...ailed information they should acquire copies of the following documents available from ETSI ETSI EN 302 066 1 V1 2 1 February 2008 Electromagnetic compatibility and Radio spectrum Matters ERM Ground and Wall Probing Radar applications GPR WPR imaging systems Part 1 Technical characteristics and test methods ETSI EN 302 066 2 V1 2 1 February 2008 Electromagnetic compatibility and Radio spectrum Mat...

Страница 88: ...nies construction companies and emergency rescue or firefighting organizations Should the ground penetrating radar be used in a wall penetrating mode then the following restriction should be noted by the user This In wall Radar Imaging Device shall be operated where the device is directed at the wall and in contact with or within 20 cm of the wall surface This In wall Radar Imaging Device shall be...

Страница 89: ...ence ou des organisations de lutte contre les incendies Si le géoradar est utilisé dans un mode de pénétration au mur la restriction suivante est à noter par l utilisateur Ce dispositif d imagerie radar doit être utilisé lorsque l appareil est orienté vers le mur et en contact avec ou dans les 20 cm de la surface du mur Ce dispositif d imagerie radar doit être utilisé que par les organisations d a...

Страница 90: ...PDP User s Guide Appendix B GPR Emissions Interference and Regulations B 8 ...

Страница 91: ...f electromagnetic fields such as TV stations radio stations and cell phones can cause signals detectable by a GPR which may degrade the quality of the data that a GPR device records and displays Such interference is unavoidable but sensible survey practice and operation by an experienced GPR practitioner can minimize such problems In some geographic areas emissions from external sources may be so ...

Страница 92: ...PDP User s Guide Appendix C Instrument Interference C 2 ...

Страница 93: ...we recommend keeping the GPR transmitters at least 5 feet 2m from blasting cap leads as a precaution Some customers do experimental trials with their particular blasting devices to confirm with safety We strongly recommend that GPR users routinely working with explosive devices develop a systematic safety methodology in their work areas The UXO issue is more complex and standards on fuses do not e...

Страница 94: ...PDP User s Guide Appendix D Safety around Explosive Devices D 2 ...

Страница 95: ...y energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his her own expense Industry Canada Notice This device complies with Industry Canada s license exempt R...

Страница 96: ...PDP User s Guide Appendix E Wi Fi Module E 2 ...

Страница 97: ...this product are obtained from qualified vendors This product has been through a stringent set of tests to ensure all quality requirements are met which includes final system calibration and configuration This system is equipped with built in diagnostic tests By running the tests and getting a passing result you can be confident that the system is operating within specification No further user cal...

Страница 98: ...PDP User s Guide Appendix F Calibration F 2 ...

Страница 99: ...at represent density other form coefficients can be readily determined from these values The common practice is to use the PDP to measure the permittivity K at a number of locations and obtain the density from cores or indirectly from nuclear density gauge measurements The end result is a set of tabulated data such as below Permittivity K Density 𝝆 K1 𝜌1 K2 𝜌2 K3 𝜌3 K4 𝜌4 K5 𝜌6 K6 𝜌6 The observed ...

Страница 100: ...ndix G Converting Permittivity to Density G 2 compaction and air void ratio To measure the maximum density the material has to be formed or compressed to a state with no air This is normally done at a materials testing lab ...

Страница 101: ... would input a density offset value to bring the PDP surveyed measurements in line with that from a core sample or possibly calibrated nuclear gauge measurement Density Site Specific measurements of the asphalt properties at a site are used to create a unique site specific means of calculating density While more complex than just density this can be a more accurate representation of the true densi...

Страница 102: ...ta is collected Data is displayed as some parameter density permittivity vs permittivity Relative Density sometimes called normalized density or compaction this parameter expresses the density measured as a percentage of the site specific maximum density Relative Permittivity K also known as the relative dielectric permittivity this is the initial value calculated by PDP Relative permittivity is e...

Страница 103: ...ator UWB emmisions do not occur and sources are not active All systems are designed to eliminate un needed UWB emissions Control lies solely with the operator GPR measurments require the measurement devise to move over the ground surface Sensors Software GPR units are deployed with a motion sensor such as an odometer wheel to trigger data acquisition When the system is not in motion the system cea...

Страница 104: ...ator UWB emmisions do not occur and sources are not active All systems are designed to eliminate un needed UWB emissions Control lies solely with the operator GPR measurments require the measurement devise to move over the ground surface Sensors Software GPR units are deployed with a motion sensor such as an odometer wheel to trigger data acquisition When the system is not in motion the system cea...

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