3D Laser Range Finder Group 27 Christian Conrose, Andrew Watson, Jon Ulrich.

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Presentation transcript:

3D Laser Range Finder Group 27 Christian Conrose, Andrew Watson, Jon Ulrich

LIDAR LIght Detection And Ranging

Motivation AUVSI Competitions for Robotics Club Augment Computer Vision Capabilities Mobile 3D range finder Visually represent range data

Goals Create Accuracte 3D Sensor Indoor/Outdoor Operation High Update Rate Longevity Occams Razor

Specifications Requirements SizeLess than 3 cubic feet WeightLess than 5 pounds Power DrawLess than 36 watts 3D Scan Rate2 hertz Communication PortEthernet Weather RatingIP45

Process Rotating 2D lidar sensor Event driven system Rotation adds 3rd dimension

Lidar Selection Hokuyo PBSSICK LMS291- S05 Hokuyo UTM- 30LX Light SourceIR LEDLaser Diode ApplicationIndoorIndoor / Outdoor Angular Resolution Scanning Range Detecting Range0.2m to 3m m0.1m to 30m Scan Time100ms75ms25ms Power24VDC230V12VDC Price$1,200$3,500$6,000

Laser UTM-30LX 30 meter range Serial Interface C++ Library Scan Feedback

Event Driven

Laser

Motion: Pitch +Pro: Immediate Horizon -Con: Alternating Directions Full Scan Latency

Motion: Yawing Scan +Pro: Immediate Vertical Scan -Con: Alternating Directions Full Scan Latency

Motion: Rolling Scan +Pro: Center Focus Continuous Rotation -Con: Peripheral Vision

Motor Selection Dynamixel RX-24F42BYGHM809Dynamixel MX-28 Motor TypeServoStepperServo Resolution Voltage12VDC3VDC12VDC Price$139$17$219

Motor Selection: MX-28T Motor Feedback Highest Resolution Continuous Rotation Serial Communication 12V Rail

3D Interpolation Input Output 2D Point 3D Point Motor Position

Point Cloud Visualization

Microcontroller Raspberry Pi Model B Beagle Board Black Pandaboard ES Price $35$45$182 Processor 700MHz1GHz1.2GHz Dual Core RAM 512MB 1GB Size 3.37” x 2.125”3.4” x 2.1”4.5” x 4” Max. Drain 700mA470mA800mA

Raspberry Pi 700 MHz ARMv6 ISA 8 GPIO Smallest physical footprint

Operating System Raspbian Debian linux operating system tailored for raspberry Pi Threaded Application Onboard development Libraries

Communication TCP Communication Custom Communication Protocol Packet Section# Bytes Initialization2 Action Code3 Packet DataN Command NameCommand TypeAction Code StartSystem0xA01 GetDepthImageImage0xCD1

Power Source: 12VDC Output: 5VDC and 12VDC Part: TI LMZ14203 Switching Module Source Input: 6V - 42V Max Output: 18 Watts Output Voltage: 0.8V - 6V

Power LMZ14203 Switching Module

Testing Software Testing o Laser o Motor o Microcontroller 3D Scan Testing o Indoor/Outdoor o Day/Night o Movement

Division of Labor AndrewChristianJon LaserX MotorXX MountX CommunicationXX PowerXX VisualizationX TestingXXX

Budget Raspberry Pi model B$35 Hokuyo UTM-30LX$5,999 Dynamixel MX-28$219 Logitech Business Pro 9000$65 Mercotac Rotating Connector 830$449 PCB$50 FTDI Chip USB-RS485-WE-5000-BT$45 Power System$150 Total Cost$7,015 TI & UCF Robotics Club Donated Parts-$7,015 Final Cost$0

Progress

Project Status

Difficulties Event Timing Rotating Platform Real Time Rendering Vehicle Movement

Questions?