Copyright © 2014 AptCore Ltd. All rights reserved. AESIN Conference – Safety and Security
APTCORE
Processing for Automotive collision Avoidance
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Tim Styles
Director of Technology, AptCore Ltd
Copyright © 2014 AptCore Ltd. All rights reserved. AESIN Conference – Safety and Security
Automotive Driver Assistance Systems
• Most manufacturers offering ADAS– Adaptive Cruise Control – Brake Assist / Collision Avoidance-Mitigation– Blindspot Detection / Lane Change Assist– Cross Traffic Alert– Side Impact detection
Copyright © 2014 AptCore Ltd. All rights reserved. AESIN Conference – Safety and Security
Automotive Driver Assistance Systems
• Camera– Cost effective for object recognition and sizing– Not good in poor visibility conditions– Not good for accurate distance and velocity
• Radar– Good for distance and velocity– Works in all conditions– Currently more expensive
Copyright © 2014 AptCore Ltd. All rights reserved. AESIN Conference – Safety and Security
Radar System Market
Copyright © 2014 AptCore Ltd. All rights reserved. AESIN Conference – Safety and Security
Radar Systems
• Radar Processing Trends– Market is moving to multi-sensor, multi-beam
– Improved resolution required – detect bikes, pedestrians etc.– Safety critical – requires dependable results – Radar anti-interference techniques will become increasingly important– Low power / heat required for flexibility of positioning in vehicle– Low cost required for mainstream market.– Single transmit, multiple receive and vice versa in use
• Flexible approach is essential
Copyright © 2014 AptCore Ltd. All rights reserved. AESIN Conference – Safety and Security
Radar System Processing
• Info needed : Range, Velocity, Direction
• Pulse Doppler– Expensive, but flexible and robust to interference
• Continuous Wave (CW)– Low cost, but measures speed only
• Frequency Modulated Continuous Wave (FMCW)– Cost effective for speed and distance
– Chirped signal transmitted
– Intermediate Frequency proportional to range
– Doppler Frequency proportional to speed
• Beam-forming– Use of phased array – multiple antennae
– Phase info allows beam-forming to give direction
Copyright © 2014 AptCore Ltd. All rights reserved. AESIN Conference – Safety and Security
Radar Range Doppler Processing
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Copyright © 2014 AptCore Ltd. All rights reserved. AESIN Conference – Safety and Security
Radar Cruise Control
• Cruise control radar
– Uses ACR102
– Xilinx Zynq ARM implementation
– 24GHz Radar, Horn antenna
– Tracks vehicle in front, providing range and relative velocity
Copyright © 2014 AptCore Ltd. All rights reserved. AESIN Conference – Safety and Security
Radar Autonomous Driving
• Radar based occupancy grid
– Daimler AG, Ulm, Germany
Copyright © 2014 AptCore Ltd. All rights reserved. AESIN Conference – Safety and Security
Radar Cyclist Detection
• Driver Assistance System
– Alerts driver to cyclists
– Detection and Classification
• Reduced false alert
– 98% of Cyclists detected
– 1 to 2 false alerts per hour
• Audio alert
– VDU not required
– No distraction
• High reliability detection
– All weather system
– Day and night
Copyright © 2014 AptCore Ltd. All rights reserved. AESIN Conference – Safety and Security
Radar Cyclist Detection
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Visit www.fusionproc.com to see the video
Copyright © 2014 AptCore Ltd. All rights reserved. AESIN Conference – Safety and Security
Radar Cyclist Detection
• Collision Avoidance
– Camera + Radar solution
– Uses ACR102 for Range-Doppler processing
– Xilinx Zynq implementing ACR102
– Fusion processing – optical and radar
– Detects, tracks and classifies pedestrians, cars and cyclists
Copyright © 2014 AptCore Ltd. All rights reserved. AESIN Conference – Safety and Security
Cyclist Classification
Copyright © 2014 AptCore Ltd. All rights reserved. AESIN Conference – Safety and Security
AptCore ACR102 Radar Processing IP
• Programmable, ISO26262
• Synthesized for TSMC 65 nm GP, regular VT library
– At 120 MHz the expected area is 60k NAND equivalent gates
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Copyright © 2014 AptCore Ltd. All rights reserved. AESIN Conference – Safety and Security
ACR102 Development platform
• Xilinx Zynq FPGA including ARM host
• AptCore ACR102 DSP
• Interfaces and bespoke Logic
• AptCore API and function library
• Reference Designs
– Traffic Monitor
– Collision avoidance
– Cruise Control
Copyright © 2014 AptCore Ltd. All rights reserved. AESIN Conference – Safety and Security 16
Thank You
Email: [email protected] Tel: +44 (0) 117 911 2416
http://www.aptcore.com