Exploring the secrets of the ADAS integration program from the "core"
As the safety standards of automobiles in various countries continue to increase, ADAS has become one of the most popular applications in the field of automotive electronics as an auxiliary system that can greatly improve the safety performance of automobiles.
Traditional ADAS applications can be divided into two categories: high-speed applications are mainly integrated into the ECU (electronic control device) through sensors and smart cameras; low-speed applications are collected by the camera to the relevant information to the ECU, which is what we call 360 Panoramic surround system. Whether it is from sensors, cameras or ECUs, it is closely related to the semiconductor industry. As a leading supplier of semiconductor solutions for the automotive industry, Renesas Electronics is also very optimistic about the future development of the ADAS market.
Lin Zhien, deputy director of the automotive business center of Renesas Electronics (Hong Kong) Co., Ltd., said that the application of ADAS is ultimately for autopilot or driverless, and Renesas Electronics is committed to four areas of security, encryption, sensors and networks. Deploy the appropriate solution.
For the current ADAS system, in addition to the more common applications, such as ultrasonic sensing, rear view monitoring, and 360 panoramic viewing function, the number of automatic driving and unmanned driving is the hottest, and this is also the major auto manufacturers. Actively expanding emerging areas. In response to this trend, Renesas Electronics has introduced the R-Car V2H, the first R-Car series SOC product for ADAS applications. In addition, in order to better serve the ADAS and autonomous driving applications with the R-Car V2H, Renesas At the end of 2014, Electronics also launched a new 32-bit MCU product, the RH850/P1x-C.
According to Lin Zhien, R-Car V2H uses Renesas Electronics' R-Car SoC technology for automotive infotainment equipment, and incorporates high-performance 2D/3D graphics processing technology, image recognition (IMP-X4) technology, and vehicle network. And low-power technology to support high-resolution surround vision in ADAS systems for improved system performance, reduced power consumption, and enhanced safety for both traditional and emerging driverless vehicles.
R-Car V2H system block diagram
The RH850/P1x-C series is a high-end version of the 32-bit automotive-grade MCU, the RH850/P1x series, designed specifically for sensor fusion, gateway and advanced chassis applications required for advanced systems in the future. In combination with the R-Car V2H, it has a high degree of matching for tasks such as road detection, parking assistance or vehicle inspection.
“R-Car V2H will perform image recognition based on the data sent by the image sensor. The networked RH850/P1x-C series MCU will judge and issue corresponding control commands. The system thus forms only a small number of components, Renesas The electronic R-Car V2H and RH850/P1x-C series MCUs not only provide an integrated solution for the ADAS system, but also lay a good foundation for the next generation of cars to achieve unmanned functions." Lin Zhien added.
RH850/P1x Series MCU
Focus on car safety from the "core"
For automotive applications, safety is always a key factor in being ranked first. From a chip point of view, how to ensure the safe and normal operation of the driver assistance and autopilot system is particularly important by ensuring the functional safety of various types of automotive chips.
“In terms of functional safety, Renesas Electronics has designed its RH850/P1x-C series of MCUs with years of expertise and experience in functional safety to provide functional safety and compliance with ISO 26262 functional safety standards. The highest safety level ASIL D is specified for road vehicles.†Lin Zhien pointed out that the RH850/P1x-C series has fault diagnosis function, which is configured with the same two CPUs running in the lockstep system, error checking and correction (ECC) function. Data errors affecting memory (such as flash memory) and internal bus can be detected and corrected; fault detection for system diagnostics is also included in peripheral functions; built-in self-test (BIST) function detects various fault detection functions themselves The error control module (ECM) allows the user to manage the error signal input from each function according to the specific situation, thus helping to maintain system security and reliability.
Correspondingly, the R-Car V2H is also designed to achieve a high level of functional safety. In order to support the system manufacturer's security concept, the ECC function is implemented in the R-Car V2H's external memory and CPU cache. In addition, the hardware CRC feature makes it easy to implement end-to-end protection of data transmission. At the same time, the system's application of the high-reliability INTEGRITY® OS real-time operating system developed by Green Hills Software is an important step in achieving functional safety in hardware and software.
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