Automotive Electronics
GM Rolls Out "Teen Driver" Feature
Bill Fleming

Low-Cost Lidar—AEB systems utilize on-vehicle sensors, generally including LiDAR (light detection and ranging), to help detect and identify an imminent crash with a vehicle up ahead. The cost of a LiDAR sensor is expected to eventually come down, well under US$100.

"One low-cost LiDAR under development utilizes a pulsed laser along with a two-by-eight array of 16 photodiodes, and it has a detection range of 30 m," says Rajeev Thakur, a marketing manager for Osram Opto Semiconductors, Munich, Germany. The photodiode array is wider than it is high because horizontal resolution is what matters most for the intended application, AEB systems.

Osram makes the LiDAR laser and photodiode components composed of ultrafast-response indium–gallium–arsenide semiconductors. Its partner, the start-up company Phantom Intelligence, Quebec, Canada, integrates Osram’s components into the LiDAR’s electronics module, which has a footprint about the size of a business card. The full sensor package is larger, but it is claimed that it can fit on the inside of the windshield, just ahead of the rear-view mirror.

The LiDAR sensor neither scans mechanically, like a roof-mounted one, nor electronically. Instead, it emits near-infrared (IR) light from a dedicated IR-pulsed laser diode. The 16 photodiodes detect pulses reflected in two vertical planes, with each plane segmented into eight horizontally-spaced IR-photodiode detection channels.

The received IR pulses are digitally processed to compute the distance and the rate of change in distance as detected in each of the 16 channels. The photodiodes are especially suitable for automotive LiDAR applications for their given fast switching time.

Read the full article: IEEE Vehicular Technology Magazine, Volume 11, Issue 1, March 2016

Previous Article | Next Article

In this Issue
IEEE Transactions on Vehicular Technology Improving Steadily
Call for Editor-in-Chief for New Magazine on IEEE Comms Standards
Chapter Profile–New VTS Chapter in New South Wales
SAVE THE DATE: VTS Connected & Autonomous Vehicle Summer School @ WPI
Mobile Radio
3GPP Standard for the Internet of Things
Automotive Electronics
GM Rolls Out "Teen Driver" Feature
Land Transportation
ISR Orders over 60 Electric Locomotives
Connected Vehicles
Survey of Consumers and City Planners
Conference Preview
VTC2016-Spring in Nanjing, 15-18 May 2016