Strong advances in deep learning computer perception models allow the automated vehicle system to more accurately understand the vehicle surroundings, detect objects and roadways, and better predict a safe driving route.
28 Sep 2017 | 3388 Views | By Autocar Professional Bureau
Toyota has announced rapid progress in the development of automated driving technology and other project work at the Toyota Research Institute (TRI).
"In the last few months, we have rapidly accelerated our pace in advancing Toyota's automated driving capabilities with a vision of saving lives, expanding access to mobility, ...
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Toyota has announced rapid progress in the development of automated driving technology and other project work at the Toyota Research Institute (TRI).
"In the last few months, we have rapidly accelerated our pace in advancing Toyota's automated driving capabilities with a vision of saving lives, expanding access to mobility, and making driving more fun and convenient," said Dr. Gill Pratt, CEO of TRI. "Our research teams have also been evolving machine intelligence that can support further development of robots for in-home support of people."
"Vehicles with automated driving technology will bring many benefits to society, but one of the top priorities at Toyota is to help make the traffic environment safer," said Kiyotaka Ise, Chief Safety Technology Officer and senior managing officer of Toyota Motor Corporation. "By having our vehicle technologies seamlessly anticipate and interact with human beings and the traffic environment, we will get closer to realizing a future without traffic injuries or fatalities."
Since unveiling its Platform 2.0 research vehicle in March 2017, TRI has quickly updated its automated driving technology to the Platform 2.1 test platform. TRI’s strong advances in deep learning computer perception models allow the automated vehicle system to more accurately understand the vehicle surroundings, detect objects and roadways, and better predict a safe driving route.
These new architectures are faster, more efficient and more highly accurate, says TRI. In addition to object detection, the models' prediction capabilities can also provide data about road elements, such as road signs and lane markings, to support the development of maps, which are a key component of automated driving functionality.
Platform 2.1 also expands TRI's portfolio of suppliers, incorporating a new high-fidelity LIDAR system provided by Luminar. This new LIDAR provides a longer sensing range, a much denser point cloud to better detect positions of three-dimensional objects, and a field of view that is the first to be dynamically configurable, which means that measurement points can be concentrated where sensing is needed most. The new LIDAR is married to the existing sensing system for 360-degree coverage. TRI expects to source additional suppliers as disruptive technology becomes available in the future.
Second vehicle control cockpit
On Platform 2.1, TRI has created a second vehicle control cockpit on the front passenger side with a fully operational drive-by-wire steering wheel and pedals for acceleration and braking. This setup allows the research team to probe effective methods of transferring vehicle control between the human driver and the autonomous system in a range of challenging scenarios. It also helps with development of machine learning algorithms that can learn from expert human drivers and provide coaching to novice drivers.
TRI has also designed a unified approach to showing the various states of autonomy in the vehicle, using a consistent UI across screens, colored lights and a tonal language that is tied into Guardian and Chauffeur. The institute says it is also experimenting with increasing a driver's situational awareness by showing a point cloud representation of everything the car ‘sees’ on the multi-media screen in the centre stack.
With its broad-based advances in hardware and software, Platform 2.1 is a research tool for concurrent testing of TRI's dual approaches to vehicle autonomy – Guardian and Chauffeur – using a single technology stack.
Under Guardian, the human driver maintains vehicle control and the automated driving system operates in parallel, monitoring for potential crash situations and intervening to protect vehicle occupants when needed. Chauffeur is Toyota's version of SAE Level 4/5 autonomy where all vehicle occupants are passengers. Both approaches use the same technology stack of sensors and cameras.
The platform includes the ability of the Guardian system to detect distracted or drowsy driving in certain situations, and to take action if the driver does not react to turns in the road. In such a situation, the system first warns and then will intervene with braking and steering to safely follow the road's curvature. Chauffeur test scenarios demonstrate the vehicle's ability to drive itself on a closed course, navigate around road obstacles, and make a safe lane change around an impediment in its path with another vehicle travelling at the same speed in the lane next to it.
In addition to real-world testing, TRI is using simulation to accurately and safely test engineering assumptions.