Advanced automotive electronics technology helps cars achieve zero casualties Chengdu Panfeng Technology

Advanced automotive electronics technology helps cars achieve zero casualties. Car safety has always been a topic of concern. As China replaced the United States as the largest car sales country last year, both car companies, parts suppliers and ordinary Chinese consumers are paying more attention to safety issues. All are increasing day by day. The scope of automobile safety is very broad, ranging from specialized safety configurations to every component, every steel plate, every welding point, and even the position of the welding point. Judging from the current technological development trends, from passive safety, active safety, active safety function integration to active and passive safety function integration, automotive safety technology is constantly working towards zero casualties.
Passive safety and active safety
The airbag market in passive safety is developing extremely rapidly and will become the most widely used safety technology currently and in the next few years. The penetration rate of airbags in China's automobile market will exceed % in 2018. Airbag technology is becoming increasingly mature. Freescale's global automotive marketing manager said.
At present, the auxiliary protection safety system (r) including front airbag has become the standard configuration of many mid-range cars. As the number of airbags such as side airbags and curtain airbags increases, more advanced airbag systems are being developed. The future trend will be for low-end cars to have two frontal airbags as standard equipment and mid- to high-end cars to have six or more airbags and seat belt pretensioners. Said the senior manager of the safety system market of the Automotive Electronics Division of Infineon Technologies Asia Pacific Co., Ltd.
The widespread adoption of accelerometers in automotive airbag systems in the early 1900s spurred the first wave of design development. As a leader in the field of airbag accelerometers, Freescale has recently launched a number of products including satellite impact accelerometers, the industry's first or-axis satellite inertial sensors available in packages, dual-axis impact sensors for airbags, and airbag systems. basechips(). And D also means that its high integration (acceleration sensor and gyroscope are integrated together, low-value and high-value acceleration sensors are integrated together) will also be developed in the near future.
The development trend of future sensors is still to reduce size, enhance reliability and improve sensitivity. Says this is a new era called sensor fusion or system-in-package. The fusion of active and passive safety systems brings new challenges that can be solved by integrating different sensors into a single package (such as a gyroscope plus a low acceleration sensor). The fully integrated system-in-package used by Freescale includes three chips: a pressure sensor, an acceleration sensor, a 1-bit microcontroller and an R transmitter.
Like airbags, anti-lock braking systems (anti-lock braking systems) have been recognized as standard equipment in developed countries, but their development potential in developing countries such as China is still huge. It was added that other security systems such as , , etc. have also gained sufficient market attention. These four major safety systems currently account for the vast majority of global automotive safety systems.
Future automobile safety technology needs to provide vehicles with front, rear, left and right safety protection. According to Delphi, it is necessary to provide vehicles with safety barriers ( ). The technologies used include adaptive cruise systems, forward collision warning systems, collision mitigation and avoidance systems, lane departure warning systems D, driver lane keeping ability warnings, active night vision systems, headlight control systems, traffic Sign recognition system, vehicle blind spot detection, lane change assistance, vehicle rear-end collision warning, vehicle rearview imaging system, and intelligent parking assistance system.
Among the many advanced technologies mentioned above, the most typical ones are lane departure and forward collision warning, whose technical basis is video and radar. According to Li Fangzhen, the automotive e-commerce manager of D Greater China, China's local safety module suppliers and universities have developed lane departure and night vision functions based on video technology, but the use of radar technology is still in the initial stage.
It is true that the adoption of anti-collision preventive safety technology using new radar and imaging technology is still in its early stages. The business marketing director of Asia Pacific and Japan said that only a few major manufacturers have begun to use this technology as a Safety option.
The big difference between active safety products and other automotive electronic products is that the performance of the former is related to road conditions, traffic conditions, especially the driver's driving habits. Dr. Shen Junqiang, manager of the safety system new product development department of Delphi (China) Technology R&D Center, emphasized here that bringing an active safety system developed in North America and Europe intact to the Chinese market is not necessarily the best solution. Suppliers must conduct secondary development based on the actual situation in China, not only adjusting calibration parameters but also modifying core algorithms. At the same time, a large number of tests and data collection and analysis are required on Chinese roads.
Delphi's current electronic scanning radar and intelligent forward-looking video system can provide forward safety protection for vehicles. r The radar is a multi-mode electronically scanned radar providing both long and medium range coverage. Based on r radar, systems, systems, and systems with start and stop functions can be built. It is a small but powerful video system that integrates a camera and processor and can be installed behind the windshield to provide D, D, and video-based systems. At the same time, radar signals and video signals can also be fused to provide a data fusion-based system. It is reported that Freescale is also constantly innovating in this field. Its radar solutions for blind spot monitoring () or adaptive cruise control are under development.
The complexity of security systems undoubtedly brings more challenges to chip suppliers. Key needs and challenges will focus on delivering technology. r Gu Lei, senior manager of Texas Instruments Automotive Electronics China, said that fail-safe design features (such as redundancy and built-in safety self-checking) require us to provide higher integration and complexity.
Indispensable high-performance microprocessor:
In active safety technology, signal processing is as important as the signal acquisition mentioned above. Active safety technology makes extensive use of sophisticated digital and analog signal processing as well as image processing and pattern recognition techniques. To handle these complex algorithms requires a high-performance microprocessor or D as a platform for the software to run.
At present, Infineon's bit series are widely used in various safety systems including, and airbags. The performance of this series ranges from low-end pin flash memory to high-end pin flash memory. The series is scalable and covers compatibility with many automotive electronic safety systems, and the software and hardware are reusable. This product family is equipped with high performance and can process up to 10,000 instructions per second. Flexible (Universal Serial Interface Channel) configurable as r, buffer, bus or interface. The (current version) can provide up to a plurality of flexibly allocated message objects through three nodes and has gateway functions. In addition, Infineon also offers bit and bit series for this field.
Freescale offers a complete set of r microcontrollers for airbags, power steering and applications. Among them, its latest products are specially optimized for safety applications such as electronic power steering, vehicle stability control and driver assistance. The dual-core contains two channels, each of which includes a core, bus, interrupt controller, memory controller and other core-related modules. Lower cost compared to currently employed dual methods. In addition, D applications are currently under development.
The ability to operate in harsh conditions is ideal for automotive under-the-hood applications. Its powerful 1-bit or 1-bit microcontroller provides processing power for safety systems while a communications controller is used for critical communication between different sensor modules within automotive electronic systems.
Li Fangzhen said: The current customer demand for the development of assisted driving systems is not limited to chip technology level applications and system software level resources and support are also essential. For this reason, D has specially developed a new generation of D() chips. Much of the data processing is completed by hardware, thereby reducing the customer's software programming workload.
Virtually all electronic solutions involve software development and the number of software running in the background is increasing. For traditional passive safety, the development of traditional passive safety will be more complicated than before as the system becomes more and more integrated. However, because the chips used have certain compatibility and adopt standard protocols, although the complexity increases, it brings higher-level security. Function and lower cost and this is also the trend of technological development.
In addition, it is also believed that adding modular systems in cars will not increase the complexity of the algorithm as many people think. On the contrary, the use of modular concepts can reduce complexity. Because in this case each control box manages its own electronics and software. The communication between these modules is also simplified by using digital buses and buses.
The deployment of safety systems in modern vehicles is mainly driven by two factors:
First, strict regulations require vehicle manufacturers to implement electronic safety systems. For example, the requirement to install electronic stability control systems and tire pressure monitoring systems in the United States will also be mandatory in Europe. It is expected that similar regulations will be implemented in China taking into account the interests of all vehicles and road users.
Second, customers need safer vehicles. Vehicle safety scores are required by law to be a factor that must be considered when making a car buying decision. For consumers who are planning to buy a vehicle, airbags and airbags are the most basic requirements.
In fact, electronic security systems and their direct impact on human well-being are beginning to face increasingly stringent requirements. Upcoming functional safety standards will be applied to the automotive industry to ensure that a car’s electronic systems are completely safe. These new requirements affect the entire product development process and also have an impact on the Automotive Electronics Association - or - quality requirements. Engineers must gather evidence from the beginning of the design process to prove that the product was developed according to regulatory standards.
Li Fangzhen said that as a chip supplier, all products of D must pass internationally recognized test standards such as /- and other standard chips. After being made into modules, there is also a series of tests such as /- etc. Before the car is put on the market, there are many safety issues. The test is as follows. In order to ensure security, governments around the world have also introduced corresponding regulations to force companies to install corresponding functions.
In terms of system standards, there are standards. Shen Junqiang introduced that one of the most basic prerequisites for Delphi to develop active safety systems is to meet the standards. In terms of regulations, North America and Europe have relevant active safety regulations and vehicle safety evaluation standards. For example, the standards have relevant test requirements and passing standards for forward pre-collision warning. In terms of regulations, China's automotive electronics market is closely following Europe and the United States. In addition to the already implemented regulations on passive safety, there are also relevant proposed regulations on active safety, especially pedestrian protection.
Although China's automotive electronics industry has fully launched automotive electronics standardization work, the country will also introduce corresponding policies and regulations to encourage and standardize this developing industry in terms of new energy vehicles. However, the fact is that China's automotive electronics standardization work is different from that of foreign countries. The industry still lags behind significantly in product development and lacks standards, which also affects the development of the entire industry.
In addition to safety regulations, the Chinese automobile market also has some unique features. One of the key differences between the Chinese market and other emerging markets is that Chinese consumers expect every car to have all the latest electronics and features while some other markets only want cars with basic configurations. Gu Lei said that this in turn will drive the development of an astonishing number of new products in the Chinese market and the product development cycle is very fast compared with mature Western markets.