Uncrewed Systems Technology 048 | Kodiak Driver | 5G focus | Tiburon USV | Skypersonic Skycopter and Skyrover | CES 2023 | Limbach L 2400 DX and L 550 EFG | NXInnovation NX 100 Enviro | Solar power focus | Protegimus Protection

T-MOTOR THE SAFER PROPULSION SYSTEM POWER MAKES YOUR EXPLORATION www.tmotor.com Platformone This is tested in the lab using physical cameras that measure light intensity levels and colour reproduction against the simulation, with results within a single-digit percentage. All the calculations are handled as 32-bit floating point data to represent the strength of the light beams. However, this is not a real-time engine, as the optimisations used for high-speed rendering in the DIL systems won’t work for the highest fidelity sensor simulation. “We still need to be highly efficient with this sensor simulation though, so wemake sure every ray we fire is used,” said Daley. The ray tracing incorporates every element in a simulated scene, which has been physically modelled to include accurate material properties to create the highest fidelity sensor data. The rate of frame rendering is adjusted to suit the level of detail required. That enables high-fidelity rendering to be carried out overnight and then played back in subsequent real-time runs if needed. The simulations can all be rendered on a commercial GPU board in a PC, taking seconds per frame. The sensor models run on another GPU card, coordinated by the central processor in the PC. This can be extended to cloud computing systems with arrays of CPUs and GPUs to build systems with multiple sensors, as a driverless vehicle could have 40 or more sensors operating simultaneously. The simulation is managed by a series of APIs. A vehicle API is used for the vehicle being simulated, with a traffic API for additional vehicles, pedestrians, bicycles and so on. Then there is a sensor API to link to the sensor model. Themulti-threaded rFpro simulation is also a synchronous systemand waits for everything to finish beforemoving to the next step, which again prioritises accuracy and precision over real-time operation. A simulation thread controls all the objects and where they are, then there is an independent rendering thread to produce the ray data for the sensor models. “We started this development at the time ray-tracing cores appeared on graphics cards, so the ray tracer has been designed for those cores,” Daley said. “We havemore than 200 digital models, ranging froma 30 km section of a complex highway in central Tokyo to the controlled setting of Millbrook proving ground in England that shows the entire location.” The simulation environment makes it extremely flexible to create thousands of tests, particularly the edge and corner cases that are difficult to reproduce in the real world, such as testing the flicker mitigation in the sensor. “This represents a move away from proof-of-concept demonstrators for training neural networks using synthetic data to continuous development and testing for an inherently safe process,” Daley said. POWER MAKES YOUR EXPLORATION www.tmotor.com