After rapid development in recent years, users in the Chinese automobile consumer market have gradually shifted from the initial demand for basic mobility functions of automobiles to higher-level demands such as safety. A third-party company ’s research report shows that the growth rate of safety automotive semiconductor components is at the forefront of automotive electronics. The currently widely adopted automotive electronic active safety technologies mainly include automatic anti-lock brake systems (ABS) and electronic brake assist systems. (EBA), electronic braking force distribution device (EBD), drive anti-skid system (ASR), electronic stability control (ESC), anti-rollover and rollover detection (Rollover / Roll Stability), adaptive cruise control device (ACC) and advanced driving Auxiliary system (ADAS), etc.
Xu Zhibin, China Marketing Manager, Automotive Electronics Industry, Analog Devices Semiconductor Technology (Shanghai) Co., Ltd.
Among them, the rapid increase in the number of mass production is the electronic stabilization system. We believe that a development trend of the electronic stabilization system is to increase the anti-rollover function and the ramp parking function on the basis of the traditional ESP, which also brings the gyroscope Opportunities for chips and low-range accelerometer chips. Another popular application is the advanced driver assistance system (ADAS) based on vision and radar. According to IHS isuppli's automotive research special report, the 2012 adaptive cruise control system (ACC), lane departure warning (LDW) and side objects The total revenue of the three major ADAS technologies such as detection (SOD) will reach 2.69 billion US dollars, an increase of up to 63%. It is not difficult to see from these data that the potential for active security development is huge.
As the government's corresponding automobile safety regulations and policies are successively introduced, the current trend is that the loading rate of TPMS and ESC systems is rising rapidly, and the models equipped with ESC systems are also increasing. The resulting number and scale of electronic systems are constantly expanding, and more MEMS sensors are needed to sense different parts of the collision and body posture. At the same time, the fusion of multiple sensors is also needed to reduce the complexity and cost of the system, which is another trend.
On the other hand, in the field of assisted driving, the ENCAP standard has introduced additional points for corresponding systems, and domestic standards are also keeping up quickly. This field will bring another growth driver for radar and visual signal processing chips. Looking at the future, advanced driver assistance systems (ADAS) will be the focus of development in the automotive electronics market in the next two or three years. As the cost of platforms and solutions has fallen, the deployment of ADAS systems has rapidly penetrated from high-end models to mid-range and even entry-level models.
In terms of active safety in automotive electronics, ADI's research and development focuses on rollover and stability control (ESC) and advanced driver assistance systems (ADAS radar / vision). In the field of rollover and stability control (ESC), MEMS acceleration sensors and angular velocity sensors are needed to sense body attitude. At the same time, since such sensors are often installed in locations with relatively harsh vibrations, the sensors are required to have high resistance to vibration shocks. This is a challenge for MEMS sensors. ADI has delivered more than 500 million MEMS sensors to date, and has nearly 20 years of experience in crash sensor design and related knowledge accumulation and technology. Our new generation of airbag acceleration sensors ADXL185 / ADXL189 / ADXL188 / ADXL288, angular velocity sensors for ESC and Rollover / Roll stability ADXRS800 internally integrate many system functions, such as self-test, signal bandwidth setting, threshold trigger, Excellent resistance to vibration, etc. At the same time, digital interface and extremely high integration can help customers reduce system cost.
For the ADAS system, ADI is the industry's leading supplier of ADAS chips based on vision and radar. The corresponding technology has been mass-produced in many well-known car manufacturers, and ADI's ADAS technology mainly focuses on driving safety, and of course considers the comfort of parking Features. The core of ADAS is to detect the environmental information around the vehicle through vision or radar technology, process it by DSP, and then take corresponding early warning or intervention measures. Since the core of active safety is signal collection and processing, this places high demands on semiconductor manufacturers in terms of analog technology, high-frequency technology, and digital processing. ADI can provide a vision-based intelligent driving assistance program, this program uses ADI's DSP, video converter, video amplifier and other chips. The new generation of dual-core, 1GHz processing power Blackfin BF60x series DSPs released by ADI in 2012 can simultaneously run five forward-looking vision functions, such as lane departure warning, automatic headlights, traffic sign recognition, pedestrian detection, and forward collision warning. At the same time, ADI provides a wealth of signal chain products for automotive radar systems, including PLL signal modulators, receiver channel amplifiers, MUX, and integrated receiver chips. Our Sharc floating point DSP is suitable for signal processing of radar systems. These products are ideal for ADAS system applications.
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