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Richard J. Dobson Colin Brooks, Chris Ben Hart, Dave Dean - MTRI Unpaved Roads Data Collections.

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Presentation on theme: "Richard J. Dobson Colin Brooks, Chris Ben Hart, Dave Dean - MTRI Unpaved Roads Data Collections."— Presentation transcript:

1 www.mtri.org Richard J. Dobson (rjdobson@mtu.edu), Colin Brooks, Chris Roussi,rjdobson@mtu.edu Ben Hart, Dave Dean - MTRI Unpaved Roads Data Collections

2 Remote Controlled Helicopter Bergen Tazer 800  Weight: 5.22kg, 12.75kg loaded  Max flight time: 18 minutes  Max Payload: 10kg  GPS IMU: Full autopilot system with the capability of flying preprogrammed waypoints

3 Remote Controlled Helicopter

4 Ground Station Set waypoints for helicopter collect Google Earth interface Ability to set the altitude and speed

5 Ground Station

6

7 Uploading Waypoints to the Helicopter

8 Data Collects Total flight time: 16 minutes (not including a 2 minute reserve) Flight time for a 200 m section: 4 minutes During collects helicopter is flown at 2 m/s and at an altitude of 25 m and 30 m (below 100’), rural areas only Camera Used: Nikon D800  36.3 MP resolution  55 mm prime lens 8

9 Unpaved Road Characteristics Unpaved roads have common characteristics  Cross Section (Loss of Crown) Facilitates drainage, typically 2% - 4% (up to 6%) vertical change Sloping away from the centerline to the edge Measure the profile every 10' along the road direction Able to detect a 1% change across a 9'-wide lane  Potholes 3‘ width bins 4” depth bins  Ruts Detect features >5”, >10' in length, precision +/-2”  Corrugations (washboarding) Classify by depth to a precision of +/-1” 3” Report total area of the reporting segment affected  Roadside Drainage System should be able to measure ditch bottom Relative to road surface within +/-2”, if >6” Detect the presence of water, elevation +/-2”, width +/-4”  Float aggregate (berms)  Surface type  Surface width Collected every 10', with a precision of +/- 4”

10 Site Preparation Road divided into 50 m sections (for test flights) Road was blocked during flights

11 Distress Measurements Measurements are taken of all distresses within the segment  Potholes  Rutting  Washboarding  Loose aggregate

12 Remote Controlled Helicopter Demonstration http://www.youtube.com/watch?v=KBNQzM7xGQo

13 Piotter Rd. and Garno Collect November 8, 2012

14 Helicopter Collect Piotter Rd.

15 Helicopter Data – Piotter Rd. 25 m Altitude

16 Helicopter Collect Garno Rd.

17 Helicopter Data – Garno Rd. 25m Altitude

18 Resolution from 25m at Garno Rd.

19 Aerial Collect Aircraft: Cessna 172 Average air speed: 65 Knots (~75 mph) Altitudes flown: 500 and 1000 feet Nikon D800 with 105 mm prime lens

20 Aerial Collect Piotter

21 Aerial Data – Piotter Rd. 500 ft Altitude

22 Aerial Collect Garno Rd.

23 Aerial Data – Garno Rd. 500 ft Altitude

24 2013 Collects Planned addition of Bergen Hexacopter  Compare & contrast capabilities of single-rotor helicopter vs. multi-rotor helicopter  Fly rural unpaved roads with variety of distresses New aerial collect with 200 mm lens  Camera will be mounted to the door of a Cessna 152 - nadir  Working with John Sullivan of Aerial Associates Photography, Inc., as recommended by President of Professional Aerial Photographers Association Chuck Boyle 2013 collection details will be documented in Deliverable 7-A – Field Deployment Plans report, due 5/30/2013


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