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Understanding LiDAR Sensors in Robotics and Mobility - Coggle Diagram
Understanding LiDAR Sensors in Robotics and Mobility
Main Idea 1: Definition and Principles of LiDAR
Emission of Laser Pulses
Short-duration laser pulses
High-frequency emission
Reflection and Detection
Laser pulses reflected off objects
Collected light returned to the sensor
Time of Flight Calculation
Measure time for pulse to travel and return
Calculate distance using speed of light
Multiple Measurements
Gather data from different angles
Generate detailed 3D point clouds
Main Idea 2: Components of a LiDAR Sensor
Laser Source
Emit laser pulses for measurement
Diode lasers, solid-state lasers
Scanner or Mirrors
Control laser pulse direction
Scan surroundings from various angles
Optics
Focus and direct laser pulses
Lenses, mirrors
Detectors
Measure reflected laser light
Calculate distance based on time of flight
Timing and Control Electronics
Manage laser pulse timing and detection
Synchronization among lasers and detectors
GPS and IMU
Precise positioning and orientation
Enhance accuracy in the environment
Main Idea 3: Types of LiDAR Sensors
Mechanical LiDAR
Moving parts (rotating mirrors)
High-resolution data
Bulkier, slower
Solid-State LiDAR
No moving parts (MEMS, optical phased arrays)
Compact, reliable
Slightly lower resolution
Main Idea 4: Applications of LiDAR in Robotics and Mobility
Autonomous Vehicles
Perception, navigation
3D mapping, obstacle detection
Robotics
Navigation, obstacle avoidance
Object detection in complex environments
Environmental Monitoring
Topographical mapping
Forestry assessment, flood modeling
Urban Planning
3D city models
Building height assessment, infrastructure planning