Sensor Integration for ABU Robocon 2025: Basketball Challenge

A hands-on, applied curriculum focused on selecting, implementing, and optimizing sensors for basketball-playing robots in the ABU Robocon 2025 competition.

Goal

Develop expertise in sensor integration to create robots with superior perception capabilities for basketball detection, court navigation, and game awareness.

Applied Sensor Integration for Basketball Robotics

Robotics Engineering

This course provides practical, hands-on training in selecting, implementing, and optimizing sensors for basketball-playing robots in the ABU Robocon 2025 competition.

Sensor Strategy & Architecture

Developing a comprehensive sensor strategy based on basketball game requirements and competition rules.

Sensor Requirements Analysis
  • Basketball Game Task Analysis: Break down the basketball game into discrete tasks with specific sensing needs.

  • Performance Metric Definition: Create specific, quantifiable requirements for each sensor function.

  • Competition Rule Impact Analysis: Identify all rule constraints and opportunities related to sensing systems.

  • Prioritization Framework: Create a structured approach to allocating resources based on sensing priorities.

Sensor Architecture Development
  • Perception Coverage Mapping: Create comprehensive coverage maps ensuring complete perception of relevant game elements.

  • Redundancy Planning: Design redundant sensing for critical functions while optimizing resource use.

  • Sensor Placement Optimization: Determine optimal locations for each sensor based on practical testing.

  • Inter-Robot Sensing Coordination: Create coordinated sensing strategies between multiple robots.

Sensor Selection Methodology
  • Decision Matrix Development: Build practical decision tools for objective sensor comparison and selection.

  • Specification Analysis Techniques: Develop expertise in translating specifications to real-world performance expectations.

  • Availability & Lead Time Management: Create practical approaches to ensuring timely sensor availability.

  • Cost-Benefit Analysis: Develop framework for making optimal cost-performance tradeoff decisions.

Sensor Benchmarking
  • Standardized Testing Implementation: Create replicable, objective testing procedures for sensor evaluation.

  • Comparative Analysis Techniques: Master data analysis for effective sensor performance comparison.

  • Field-Relevant Testing: Develop testing approaches that accurately reflect competition environments.

  • Documentation & Knowledge Sharing: Establish effective documentation practices for sharing sensor benchmarking results.

Vision Systems for Basketball Detection

Implementation of camera-based systems for detecting and tracking basketballs and court features.

Camera Selection & Implementation
  • Camera Type Selection: Identify optimal camera types for specific basketball detection tasks.

  • Camera Mounting Implementation: Create secure, adjustable, vibration-resistant camera mounts.

  • Lens Selection & Configuration: Determine ideal lens specifications for basketball tracking applications.

  • Camera Communication Integration: Create reliable, high-bandwidth connections for camera data transfer.

Vision Processing Implementation
  • Processing Hardware Selection: Implement appropriate processing solutions for real-time vision requirements.

  • Vision Software Implementation: Create efficient vision software optimized for basketball detection tasks.

  • Algorithm Selection & Tuning: Identify and tune optimal algorithms for specific basketball vision tasks.

  • Performance Optimization Techniques: Implement practical optimizations for real-time vision performance.

Basketball Tracking Systems
  • Basketball Detection Implementation: Create reliable basketball detection that works under various conditions.

  • Feature Extraction Techniques: Implement effective feature extraction for robust basketball recognition.

  • Color-Based Detection Systems: Create reliable color-based detection systems with environmental robustness.

  • Shape Recognition Implementation: Implement effective shape recognition for basketball identification.

Lighting & Environmental Adaptation
  • Variable Lighting Testing: Quantify camera performance across lighting conditions.

  • Exposure & Gain Configuration: Master camera parameter tuning for consistent performance.

  • Adaptive Algorithm Implementation: Create vision systems that automatically adapt to varying conditions.

  • Active Lighting Implementation: Develop effective auxiliary lighting to enhance vision reliability.

Navigation & Localization Sensors

Integration of sensors for court navigation, positioning, and orientation awareness.

Odometry Sensor Implementation
  • Encoder Selection & Integration: Create reliable wheel encoder installations for accurate odometry.

  • Wheel Odometry Implementation: Implement accurate wheel odometry systems for court navigation.

  • Drift Mitigation Techniques: Develop practical approaches to minimize odometry drift during operation.

  • Encoder Mounting Optimization: Create secure, precise encoder mounts that ensure accurate readings.

IMU Integration
  • IMU Selection & Testing: Identify optimal IMU solutions for basketball robot applications.

  • IMU Calibration Procedures: Create effective calibration procedures for maximizing IMU accuracy.

  • Gyro Drift Compensation: Implement effective drift compensation for extended operation.

  • IMU Mounting Implementation: Create optimal mounting arrangements that minimize interference and vibration.

Court Mapping & Localization
  • Court Feature Detection: Develop reliable detection of key court features for localization.

  • Localization Algorithm Implementation: Create effective localization using sensor data from multiple sources.

  • Distance Sensor Integration: Create reliable distance measurement systems for court mapping.

  • Landmark Recognition Systems: Implement effective landmark detection for position reference.

Boundary & Obstacle Detection
  • Line Detection Implementation: Create reliable line detection systems for boundary awareness.

  • Proximity Sensor Arrays: Develop comprehensive proximity sensing for obstacle avoidance.

  • Boundary Sensor Fusion: Create robust boundary detection through sensor fusion approaches.

  • Boundary Tracking Algorithms: Develop systems that maintain awareness of boundaries during gameplay.

Basketball Interaction Sensors

Sensors for detecting basketball possession, shooting success, and mechanism status.

Ball Presence Detection
  • Break-Beam Sensor Implementation: Create reliable break-beam installations for basketball passage detection.

  • Proximity-Based Ball Detection: Develop effective proximity sensing systems for basketball detection.

  • Pressure & Weight Sensing: Create reliable pressure or weight sensing for ball presence confirmation.

  • Redundant Detection Systems: Develop complementary detection methods for robust ball sensing.

Gripper & Mechanism State Sensing
  • Position Feedback Implementation: Create comprehensive position feedback for all critical mechanisms.

  • Limit Switch Integration: Develop reliable limit sensing for mechanism end-points and references.

  • Force & Pressure Sensing: Create force sensing systems for optimal ball handling control.

  • Mechanism Feedback Systems: Implement complete feedback systems for mechanism operational awareness.

Shooting System Sensors
  • Power Level Sensing: Create reliable power monitoring for consistent shooting control.

  • Angle & Orientation Sensing: Develop accurate angle sensing for precise shot direction control.

  • Velocity Measurement Implementation: Create accurate velocity sensing for shot power verification.

  • Shooting Confirmation Sensors: Implement reliable confirmation of shooting mechanism actuation.

Score Detection & Verification
  • Basket Detection Systems: Create reliable basket detection for shot targeting and verification.

  • Vision-Based Scoring Verification: Develop vision-based scoring detection for game awareness.

  • Sound-Based Score Detection: Create audio-based scoring confirmation through sound pattern recognition.

  • Scoring Confidence Metrics: Implement confidence scoring for accurate game state awareness.

Sensor Processing & Filtering

Practical implementation of signal processing and filtering for improved sensor performance.

Noise Characterization & Management
  • Noise Characterization Methods: Develop practical approaches to quantifying different types of sensor noise.

  • Shielding Implementation: Create effective shielding solutions for sensitive sensors.

  • Grounding Optimization: Develop optimal grounding approaches for noise reduction.

  • Power Filtering Implementation: Create clean power delivery systems for improved sensor performance.

Filter Implementation
  • Low-Pass Filter Implementation: Create effective low-pass filters for noise reduction in various sensors.

  • Kalman Filter Application: Develop effective Kalman filters for sensor data enhancement.

  • Complementary Filter Design: Create efficient complementary filters for combining complementary sensors.

  • Filter Tuning Methods: Master practical filter tuning for optimal performance.

Sensor Fusion Techniques
  • Complementary Sensor Selection: Develop expertise in selecting sensors with complementary strengths and weaknesses.

  • Weighted Fusion Implementation: Create effective weighting schemes for combining sensors of different reliability.

  • State Estimation Techniques: Develop practical state estimation approaches for robot positioning.

  • Temporal Alignment Methods: Create effective temporal alignment for accurate sensor fusion.

Failure Detection & Redundancy
  • Failure Detection Implementation: Create reliable detection of various sensor failure modes.

  • Data Validation Techniques: Develop practical approaches to identifying invalid sensor data.

  • Backup Sensor Systems: Create effective backup sensing for critical functions.

  • Graceful Degradation Implementation: Implement graceful performance degradation when sensors fail.

Sensor Integration & Competition Optimization

Techniques for integrating sensors into complete robot systems and optimizing for competition performance.

Sensor Calibration Methods
  • Calibration Procedure Development: Develop effective, repeatable calibration procedures for all sensor types.

  • Auto-Calibration Implementation: Create sensors that automatically calibrate or maintain calibration.

  • Field Calibration Techniques: Master quick, effective calibration approaches for competition use.

  • Calibration Tracking Systems: Develop methods to detect calibration drift during operation.

Environmental Robustness
  • Lighting Variation Testing: Quantify and improve sensor performance across lighting conditions.

  • Temperature Sensitivity Analysis: Understand and mitigate temperature effects on sensor performance.

  • Interference Testing: Identify and address interference vulnerabilities in sensor systems.

  • Environmental Chamber Testing: Validate sensor performance across all potential operating conditions.

Comprehensive Sensor Testing
  • Unit Testing Implementation: Create effective unit testing procedures for all sensor types.

  • Integration Testing Methods: Develop effective testing of sensor interactions and combined performance.

  • Field Testing Procedures: Create comprehensive field testing protocols that validate competition readiness.

  • Corner Case Identification: Systematically identify and test edge cases for all sensor systems.

Competition Preparation & Troubleshooting
  • Pre-Competition Checklist Development: Develop systematic pre-match sensor validation protocols.

  • Diagnostic Tool Implementation: Create effective diagnostic capabilities for field troubleshooting.

  • Spare Sensor Strategy: Develop comprehensive spare part and replacement strategies.

  • Quick-Swap Design Implementation: Create sensor mounting and connection systems for rapid field replacement.