The automotive industry is facing pressure to further provide better security, specifically, how to develop from the current basic passive airbag system to active ABS, ESP, TPMS systems, and then upgrade to complex advanced driving Assistant System (ADAS), which ultimately provides better ability to predict accidents in advance and avoid accidents.
Xi Yunxia, ​​Freescale Automotive Electronics Market Development Manager
Compared with the global market, the application of Chinese automotive electronic active safety systems is relatively slow. Most OEMs have implemented ABS and ESP functions in existing models. However, for the application of ADAS systems, many joint venture OEMs and local OEMs It is still in preparation and plans to gradually adopt the ADAS system in the next few years. The first-tier suppliers that provide active safety systems in China are mainly well-known international suppliers. They have introduced the systems already implemented in Europe and America into China and introduced them to the Chinese market. Some international suppliers have set up corresponding active safety research and development teams in China. , Used to develop active safety systems adapted to Chinese OEMs.
With the introduction of a series of standard specifications such as ISO 26262 functional safety (and the gradual upgrade of ASIL level), there will be more complete and detailed requirements for automotive electronic active safety applications, and OEM manufacturers will also implement new standards for the new ISO26262 standard. Active safety systems, these have put forward higher requirements for electronic active safety system suppliers. For safety-critical applications, design engineers need to make architectural choices, such as most existing semiconductor solutions or lack of flexibility to support various functional safety requirements, or require a large investment in safety software, and additional Software adds complexity and is more likely to cause system failure. Therefore, the semiconductor device needs multiple evaluations from a system perspective, and incorporates in the hardware structure more functions that were previously diagnosed with software but now all are detected by the hardware itself.
At present, the most popular active safety application research includes: automatic cruise control system (ACC) based on 77GHZ, which can promptly remind the driver according to the distance of obstacles in front of the vehicle, and can provide brake support in time if a possible accident occurs To provide drivers with a comfortable driving experience. The radar-based emergency braking assistance system (EBA) can help avoid rear-end collisions at low speeds. In addition, blind spot detection system (BSD) and auxiliary parking system (PAS) are one of the typical applications in the future. Based on the 24GHZ blind spot detection system (BSD), the driver can be alerted to potential collision accidents in time to help avoid wrong lane changes. The 360-degree panoramic camera helps the driver handle parking in a comfortable way, and also avoids reducing driver blind spots. As a new application, the multi-camera surround view system is now in the stage of gradual promotion in the market. It is foreseeable that this application will coexist with the ultrasonic-based parking assist system to avoid blind spots for the driver and improve the overall vision. effect.
Freescale is a leader in the automotive semiconductor industry. It mainly provides automotive microcontrollers, intelligent analog devices and sensors. The products are widely used in automotive power systems, automotive chassis and security systems, automotive body electronics, anti-theft systems and automotive entertainment systems. In the company, the company is committed to improving vehicle comfort and improving vehicle safety through intelligent driving, assisted driving, active safety, and cooperation with other automotive electronic systems. The main products include: SCP2200 series of new image recognition processors (ICPs) for the driver assistance system market; the world's first Ethernet-based surround-view parking system jointly launched by OminiVision and Broadcom; 77GHz high-speed radar chip based on a new semiconductor process and many more.
According to the ISO26262 standard, hardware is required to have a higher degree of integration, reduce size, reduce power consumption and cost, and also need to be matched with safety process design and safety software. For example, Freescale currently implements the highly integrated Magniv family, which covers four main areas in functional safety: safety processes, safety hardware, safety software, and safety support, using devices developed by Freescale for functional safety standards , Can help design engineers quickly complete product design, speed up time to market.
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