Tata Elxsi has been providing design and technology services for product engineering and solutions in the automotive industry and other allied domains. Auto Tech Review caught up with Nitin P Pai, Senior Vice President & Head – Marketing, Tata Elxsi, to understand the developments on its Autonomai platform, future of ADAS and autonomous technology.
AUTONOMAI PLATFORM & ITS FUNCTIONALITY
The Autonomai platform acts as a middleware that boasts of deep learning and AI capabilities. This solution assists OEMs and suppliers in the development and incorporation of custom autonomous vehicle applications. Pai said the Autonomai platform not only encompasses a wide array of real-life scenarios, but is also flexible, enabling companies to customise solutions to fit their particular requirements. The solution covers perception, GNC (Guidance, Navigation & Control system) and drive-by-wire systems. The system itself supports a variety of sensors such as mono cameras, RADAR, LIDAR, stereo cameras & GPS, IMU and wheel sensors. Acting as an interface, these inputs are relayed to a sophisticated artificial intelligence system, which Tata Elxsi has developed and is capable of deep learning, based on specific algorithms. Autonomai is also capable of region-specific adaptation facilitated through pre-integrated validation datasets and AI & deep learning capabilities. Pai said Tata Elxsi is currently working on region-specific adaptation for India as well.
Autonomai’s perception system leverages data fed by multiple sensors integrated into the system. This helps the platform perceive the environment by detecting, identifying and classifying objects around the driverless vehicle. Tata Elxsi has also integrated specific algorithms to identify traffic signs, road borders, lanes and object identification such as vehicles, pedestrians and animals, which form a part of the perception system.
Once the various sensors detect sources of information, the data is relayed to the Autonomai Sensor Fusion Engine and GNC. Data from mono cameras, RADAR, LIDAR and stereo cameras is processed in the Sensor Fusion Engine as 2D and 3D objects. Data from LIDAR, stereo camera and GPS, IMU & wheel sensors, is relayed to the GNC system as occupancy grid map and vehicle state information. The 2D and 3D data from the Sensor Fusion Engine is subsequently fed to the GNC system as an environmental map.
Pai said the GNC system takes decisions for planning & controlling the driverless vehicle based on information that has been relayed by the perception system. These inputs are then analysed by path and motion planners, which generate distance-based path using path search algorithms, while the motion planner generates data for velocity, position and heading profiles in accordance with the defined path. The planner data is then processed by a vehicle control system, which determines the longitudinal (acceleration & braking) and lateral (steering input) control. This information is subsequently relayed to the vehicle’s drive-by-wire systems.
APPLICATIONS & SCOPE OF AUTONOMOUS TECHNOLOGIES
In mid-2017, Tata Elxsi’s Autonomai platform was licensed by an OEM that ranks among the world’s top five vehicle manufacturers for its driverless R&D. The company has recently commenced ground testing of Autonomai installed in OEM vehicles and has also acquired a new clientele for its autonomous platform. Tata Elxsi collaborated with Hyundai’s Mobis Technical Centre, India (HMTCI) in late 2018 for developing a synthetic scene generator tool that will be able to replicate every real-world scenario that an automobile would come across, running into millions of possibilities. Pai said the company combined its expertise in digital technologies like AI, extended reality and gaming to develop this futuristic simulation tool that is expected to accelerate the realisation of driverless cars.
This platform can be used for platooning, parking assist, highway and urban driving. Tata Elxsi has successfully completed field trials for autonomous driving features such as lane keep, stop & go, lane change as well as for V2X features like GLOSA (green light optimised speed advisory) and LAM (lane advisory message). The company is currently conducting testing of urban roads. The Autonomai systems also have a traffic sign recognition accuracy of 99.59 % of German traffic signs. This is even greater than the level of accuracy of a human being, stated Pai. With its availability as a full stack solution or in modular components, Autonomai has a quicker realisation of Level 3+ autonomous driving. The platform can be easily deployed in test vehicles, with the company offering easy porting, optimisation, integration and testing of customer systems, sub-systems and algorithms.
VALIDATION & SIMULATION MODELS
Pai said the company’s validation model has attracted the interest of a few manufacturers. Leveraging autonomous driving and ADAS algorithms, Tata Elxsi creates simulation models to test these, while supporting multiple sensors, V2V-V2X communications through ADASIS messaging and HD maps. The simulation models leverage the gaming technology for a realistic output of the virtual validation environment. Users can fully configure sensor models (cameras, RADAR, LIDAR and ultrasonic sensors) in the simulation model. Vehicle specifications (steering, tyres, powertrain, brakes, suspension & chassis) can also be completely customised. Within the simulation model, users can also define static and dynamic objects.
Tata Elxsi’s simulation model costs is capable of reducing testing lead-time of automated generation and execution by 40 % and the software’s GUI (graphical user interface) can be quickly customised. The modular and open architecture of the simulation model enables customisation of the core simulation engine, sensor output generator, camera simulator and other components.
TEXT: Joshua David Luther