Nissan Motor has adopted Renesas’ chips for the ProPILOT 2.0 system featured in the new Nissan Skyline unveiled on July 16. The driver assistance system combines navigated highway driving with hands-off, single-lane driving capabilities, employing Renesas’ R-Car automotive SoC and RH850 automotive control MCU to implement core functionality in the electronic control units (ECUs) that handle driving judgment and control.
Designed for on-ramp to off-ramp (ramp-to-ramp) highway driving, ProPILOT 2.0 engages with the vehicle’s navigation system to help maneuver the car according to a predefined route on designated roadways. For the first time, the system also enables hands-off driving while cruising in a single lane. To achieve this advanced capability, the Renesas R-Car SoC first creates detailed environment maps of the vehicle surroundings by combining information on nearby vehicles and other objects from the cameras and front radar with the high-precision 3D map data preloaded for navigation. The SoC determines the vehicle’s own position from the map data and lane information and, based on this information, determines the vehicle’s action plan.
The RH850 MCU receives the resulting data and sends control commands to the ECUs such as the steering wheel, accelerator, brakes. Combining the R-Car SoC’s high-performance processing with the RH850’s real-time responsiveness and excellent reliability enables judgment and control operations to take place sequentially and accurately. This contributes substantially to the realization of Nissan’s ProPILOT 2.0 driver assistance system.
The Series 9 from First Sensor offers a wide range of silicon avalanche photodiodes (APDs) with very high sensitivity in the near infrared (NIR) wavelength range, especially at 905 nm. With their internal gain mechanism, large dynamic range and fast rise time the APDs are ideal for LIDAR systems for optical distance measurement and object recognition according to the time of flight method. Application examples include driver assistance systems, drones, safety laser scanners, 3D-mapping and robotics.
The Series 9 offers detectors as single elements as well as linear and matrix arrays with multiple sensing elements. The package options include rugged TO housings or flat ceramic SMD packages. The slow increase of the gain of the Series 9 photodiodes with the applied reverse bias voltage allows for easy and precise adjustments of high gain factors. For particularly low light levels, hybrid solutions are also available that further enhance the APD signal with an internal transimpedance amplifier (TIA). The integrated amplifier is optimally matched to the photodiode and allows compact setups as well as very large signal-to-noise ratios.
Using its own semiconductor manufacturing facility and extensive development capabilities, First Sensor can adapt its silicon avalanche photodiodes to specific customer requirements, such as sensitivity, gain, rise time or design.
Important features of the Series 9 APDs:
Very high sensitivity at 905 nm
Large dynamic range and fast rise time
Single element photodiodes as well as linear and matrix arrays