Patented Precision. 8 August US Patent 6,775,914 Can Patent 2,405,133 Other Patents Pending. surpro.com

Transcription

1 Patented Precision 8 August 2014 US Patent 6,775,914 Can Patent 2,405,133 Other Patents Pending surpro.com 1

2 The New SurPRO 4000 SurPRO comes from words Surface & Profiler Used on roads, structures, runways and floors 22 years of R&D and continuous improvement US & Can patents-inertial stabilizer & geometry SurPRO 3000 developed under FHWA contract: Improving the Quality of Pavement Profile Measurement-Priority Number One: Reference Device SurPRO 4000 and 4000L (laser) available now Includes all features of SurPRO 3500 Upgrades from 3500 to 4000 model available 2

3 FHWA Reference Profiler Introducing SurPRO 4000 Added Laser Adjustable short wavelength to 75mm (3in) or less Short wavelength is phase and amplitude accurate Sunlight shields for laser Optical Target Sensor for precise DMI (+/-1cm error) Automatic start and stop of profiler Automatic start and stop of distance (DMI) cal. Enables very high accuracy short waveband Millimeter sampling High Quality processing 6

4 SurPRO 4000L Laser sunlight shields (2) Optical Target Sensor Laser, under center of SurPRO in machined box 7

5 SurPRO 4000L Short Wavelength Extension SurPRO 4000 extends to 4.0 cycle/m (250 mm) sufficient for IRI, medium and long wavebands SurPRO 4000L extends to 13.3 cycle/m (75 mm) to add short waveband cross-correlation of 94% Additional Spectral Content SurPRO 4000 (black) 4.0 cycle/m SurPRO 4000L (red) 13.3 cycle/m 8

6 SurPRO 4000L 94% Short Waveband Cross-Correlation SurPRO 4000L TT run zoomed in to show 1.6m BW high pass filtered slope detail matching 9

7 Optical Targets Optical Target Sensor detects leading edge of each target and records precise distance (location) 10

8 FHWA Reference Profiler Data Collection May 2013 Record High Temperatures Checked out unit Calibrated distance on 1000 DMI site Collected 7 runs on 6 test sections in 2 days Repeated DG because of curling on 14 May 11

9 Pavement Thermal Shock DG Concrete Slab Curling 15 May 5:44 to 7:07AM C ( F) 14 May 1:10PM 39.3C (102.7F) 14 May 11:55AM 33.4C (92.1F) 1.0mm (0.04in) 4.69m (15.4ft) 1.9mm (0.075in) DG, 14 Runs, 14 & 15 May, BW bandpass filtered 1.6 to 8 m (Medium Waveband) 12

10 Temp (F), CC (%) Effect of Temp on DG Cross Correlation DG slab curling during scorcher Data collected 11:45AM-1:10PM at 7 min per run Effect of Temp on DG Cross Correlation (14 May afternoon) Sequential CC correlates each run with preceding run. First Run CC correlates each run with first run Temp (F)) Sequential CC (%) First Run CC (%) Run 13

11 Temp (F), CC (%) Effect of Temp on DG Cross Correlation DG slab generally stable temp at sunrise Data collected 5:45AM-7:07AM at 7 min per run Effect of Temp on DG Cross Correlation (15 May morning) Sequential CC correlates each run with preceding run. First Run CC correlates each run with first run Temp (F)) Sequential CC (%) First Run CC (%) Run 14

12 SurPRO #90 vs SurPRO #91 TT, 5 runs from each cross-correlated in PCM TT, 1 run from #91 cross-correlated with 5 runs from #90 in PSM, avg. CC of

13 Asphalt Concrete (AC) CrossCorre lation SurPRO PERFORMANCE RESULTS L AC IRI (m/km) IRI SHORT MEDIUM LONG RESULTS PROCESSING NOTES 7 profiles were run on each section; the first was a closed loop. Only the last 6 runs were used to calculate CC Results generally are for #90 profiler Laser alignment on #91 reduced some short waveband CC results Yellow cells indicate Sequential CC method was used due to changing temperatures affecting pavements 16

14 Asphalt Concrete (AC) 6 Runs Unfiltered 6 Runs BW Highpass 30m 99.9% Repeatability 2 Runs Cross Correlated in ProVAL using IRI filter 17

15 Chip Seal Cross- Correlation SurPRO PERFORMANCE RESULTS CS L IRI (m/km) IRI SHORT MEDIUM LONG

16 Chip Seal 6 Runs Unfiltered 6 Runs BW Highpass 30m 99.6% Repeatability 2 Runs Cross Correlated in ProVAL using IRI filter 19

17 Diamond Grinding Cross- Correlation SurPRO PERFORMANCE RESULTS DG (LG) IRI (m/km) IRI SHORT MEDIUM LONG L 0.77 N/R 99.3 N/R 94.5 N/R 97.6 N/R

18 Diamond Grinding 6 Runs Unfiltered Very small diamond grinder bumps 5 Runs BW Highpass 30m 0.5 mm peak to peak 99.5% Repeatability 2 Runs Cross Correlated in ProVAL using IRI filter 21

19 Diamond Grinding Very small diamond grinder bumps 22

20 Longitudinal Tining Cross- Correlation SurPRO PERFORMANCE RESULTS LT IRI (m/km) IRI SHORT MEDIUM LONG L 1.89 N/R 99.6 N/R 97.9 N/R

21 Longitudinal Tining 6 Runs Unfiltered 5 Runs BW Highpass 30m 99.9% Repeatability 2 Runs Cross Correlated in ProVAL using IRI filter 24

22 Open Grade CrossCorre lation SurPRO PERFORMANCE RESULTS OG L IRI (m/km) IRI SHORT MEDIUM LONG

23 Open Grade 6 Runs Unfiltered 6 Runs BW Highpass 30m 99.9% Repeatability 2 Runs Cross Correlated in ProVAL using IRI filter 26

24 Transverse Tining Cross- Correlation SurPRO PERFORMANCE RESULTS TT L IRI (m/km) IRI SHORT MEDIUM LONG

25 Transverse Tining 6 Runs Unfiltered 6 Runs BW Highpass 30m 99.9% Repeatability 2 Runs Cross Correlated in ProVAL using IRI filter 28

26 SurPRO Elevation Accuracy DEVICE SENSORS SIGNAL CONVERSION θ X X Axis Accelerometer (Roll) CALCULATIONS E Mechanical (SurPRO wheels, frame and suspension) θ Y Y Axis Accelerometers (Pitch) Electronics & Signal Processing (Analog to Digital-ADC) Math E Real Elevation θ Y θ X,Y V θx,y A V θx,y A V θx,y D V θx,y D Elevation Error = +/-0.1% (est.) Error = +/-0.2% based on accelerometer calibration sheets. Reduced by dual Y measurement. Error = +/-0.4% based on ADC specified accuracy Error = 0% TOTAL ERROR = +/-0.7% 29

27 SurPRO 4000 SurPRO 4000L Repeatability IRI, Medium & Long Wavebands Test Section IRI Medium Long Asphalt Concrete (AC) Chip Seal (CS) Diamond Grinding (DG) Longitudinal Tining (LT) Open Grade (OG) Transverse Tining (TT) Average 99.4 Test Section IRI Medium Long Asphalt Concrete (AC) Chip Seal (CS) Open Grade (OG) Transverse Tining (TT) Average IRI Long Pass level = 0.98 Medium SurPRO

28 Short Test Section SurPRO 4000 SurPRO 4000L Asphalt Concrete (AC) Chip Seal (CS) Diamond Grinding (DG) 94.5 Longitudinal Tining (LT) 97.9 Open Grade (OG) Transverse Tining (TT) Average Repeatability Short Waveband Pass level = 0.94 SurPRO 4000 SurPRO 4000L Pass 50.0 Asphalt Concrete (AC) Chip Seal (CS) Diamond Grinding (DG) Longitudinal Tining (LT) Open Grade (OG) Transverse Tining (TT) Short FHWA Certification Wavebands Waveband Short Wavelength Long Wavelength Wavelength Wave Number (cycles/m) Wavelength Wave Number (cycles/m) IRI Filter Output 1.25 m (4 ft) m (98.4 ft) Long Waveband 8 m (25 ft) m (125 ft) Medium Waveband 1.6 m (5 ft) m (25 ft) Short Waveband m (3") m (5 ft)

29 FHWA Reference Profiler 2013 Benchmark Testing Recap Mean repeatability cross correlation for all six sections (IRI, medium & long filter) was 99.4% Individual cross correlations up to 99.9%. Short waveband cross correlation using 4000L laser of up to 99.4%. SurPRO was insensitive to operator bias such as acceleration and transverse tilting motion Up to 99.5% repeatability using different profilers operated by different operators 32

30 SurPRO Models # Feature SurPRO 3500 SurPRO 4000 SurPRO 4000L 1 70mm (2.94") Wheels 2 Tire Bridging Software Filter 3 Other Software Upgrades -ProVAL.PPF and TxDOT.PRO Files -Flexible File Naming -Alarms when profiling too fast 4 Cross-Axis Accelerometer 5 New V2 Hardware for High Resolution Data Acquisition 6 Math Optimizations 7 Operator Aids for High Repeatability 8 USB Port for Quick Download to Flash Drive 9 Constant millimeter data sampling 10 High Quality Profile Processing 11 Laser 12 Optical Target Sensor Table 1. 33

31 Thanks! For more information including a copy of this presentation please go to: surpro.com internationalcybernetics.com 34