aptcore automotive 201410 nmi web

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


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


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


Radar System Market


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


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


Radar Range Doppler Processing

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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


Radar Autonomous Driving

• Radar based occupancy grid

– Daimler AG, Ulm, Germany


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



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Visit www.fusionproc.com to see the video



• 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


Cyclist Classification


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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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

aptcore automotive 201410 nmi web

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