ADAS:Technological advances to achieve safer mobile driving scenarios

source: Shenzhen bangbanghao Technology Co., Ltd popularity:311 Time of publication:2021/12/15 10:43:32 small middle big

When we authorize automobile manufacturers to build an easy to implement and cost-effective advanced driving assistance system (ADAS), the safety function of automobile has gradually become the mainstream and more economical in vehicles.

These things often happen only in a moment: at the wrong time, the text message on the mobile phone or the child in the back seat distract your attention, and before you realize this, the vehicle parked in front of you has been hit several kilometers away by your car.

Or, your automatic emergency braking system makes an emergency braking within a few milliseconds without detecting an obstacle in front.

Although fully automatic driving cars may still be the future, the safety impact of automation technology is beginning to show. In the past, automotive safety functions (such as adaptive cruise control or blind spot monitoring) that were once regarded as high-end additional technologies are becoming the standard configuration, because the cost of applying ADAS technology to vehicles is gradually reduced and has become the mainstream in many models.

China's leading automotive electronics company Desai Xiwei uses ti's Jacinto ™ The processor has developed a powerful advanced driving assistance system, and the driver can use this function to master more information related to the driving environment in real time.

"The driving environment is very complex," said Jiang Guohong, application product planning manager of Desai Xiwei. "In order to protect the driver's safety, the microchip we use in the system not only needs to have strong computing power, but also needs to have excellent in-depth learning and reasoning performance, and can continuously monitor the surrounding environment of the vehicle. Thanks to TI's professional technology and production experience in automotive solutions, we can develop to meet the safety needs of driving functions and change the future Technical products related to mobile travel mode. "

Ti processor can better help people and vehicles work together to achieve a safer mobile driving scene.

"Under normal circumstances, people are not necessarily excellent drivers, but we are very good at dealing with unpredictable extreme situations, which are difficult for computers to deal with at present," Jacinto said ™ Curt Moore, general manager of the processor, said, "because of this, it is still difficult to manufacture fully automatic vehicles, but at the same time, we can take advantage of this great opportunity to greatly improve the safety of vehicles by adding safety functions, including automatic lane maintenance, or sensing when to start and stop in case of traffic congestion."

Learn more about how to improve vehicle safety

Smarter cars can reduce collisions

Advanced driving assistance system enables the vehicle to take actions like the driver (perceive weather conditions, detect objects on the road) and make real-time decisions to improve safety. Adas functions include automatic emergency braking, driver monitoring, front collision warning and adaptive cruise control.

Overall, this technology can avoid up to 2.7 million collisions per year (only in the United States)

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"Looking ahead, we are studying how cars can dynamically change their speed limit according to real-time positioning and analysis of road conditions, such as whether it is raining or road congestion," said Miro adzan, general manager of ADAS Department of the company, "We will certainly see that cars will have a higher level of autonomous decision-making, which will help reduce collisions and fatalities."

On chip radar

More than a decade before modern driving assistance technology began to sweep the automotive industry, the engineering team of Kilby labs (our company's breakthrough innovation incubator) was developing technologies to achieve this goal.

In order to deal with dangerous situations, cars need to classify obstacles and accurately judge their distance under any weather or light conditions. One method is through radar technology, but the problem is that radar technology has always been put into operation. The equipment has a huge volume, expensive and power consumption, and is used to detect large objects such as aircraft or tanks, rather than a single pedestrian.

"We have done a lot of research and invested a lot of manpower and resources in integrating a complete radar system into a single chip," explained Yariv Raveh, Ti radar manager. "This is something that no other company has ever done before."

We have successfully developed Ti millimeter wave radar sensor, which is a coin sized high frequency radar sensor. Its resolution can not only detect the presence of obstacles, but also identify the differences between cars and pedestrians, and meet the latest automotive safety standards on a single chip, such as the new car assessment program (NCAP).

Visit Ti live! Tech Exchange, watch the dialogue of industry leaders from Ti, APTIV and blackberry QNX on architectural changes related to vehicle safety drive.

By combining the sensor with an integrated digital signal processor (DSP), our millimeter wave radar sensor chip supports running the machine vision algorithm for object classification directly on the chip. This integration simplifies the task of ADAS manufacturers and helps to create a low-cost system with low power consumption, small volume and can be installed in the rear bumper.

Realize vehicle panoramic monitoring

Although the economy and efficiency of Ti millimeter wave technology will promote radar to become a key part of ADAS, the different advantages of various sensors (such as high resolution of lidar or color information from camera) are essential to achieve full omni-directional reliability. Our FPD link ™ The serializer and deserializer can transmit uncompressed video data within the vehicle system, so that higher resolution cameras can be deployed for the vehicle adaptive driving assistance system and infotainment display. This helps to expand the safety features of cameras, such as front view cameras for collision avoidance, pedestrian recognition, rear view cameras for backup protection and look around cameras for parking assistance.

By fusing information from multiple sensing modes (also known as sensor fusion), vehicles can help drivers cope with dangerous situations, such as busy areas and dangerous weather conditions.

"Sensor fusion can help you fully understand your surrounding environment by providing information in different dimensions," Miro said. "Sensor data will be transmitted to the central processing unit, where the machine learning algorithm will use this data to analyze the surrounding environment. For example, you can send commands to your braking system based on the data to help prevent collisions."

Safety oriented design

The first consideration of any ADAS system design is security. Therefore, information processing is very important. As the vehicle becomes more and more intelligent - connecting, communicating, monitoring and judging to reduce accidents - processing a large amount of data requires more powerful computing support, so as to realize the advanced safety functions of the vehicle.

Our Jacinto processor can improve the cognitive ability of the environment around the car and accelerate data sharing within the software defined car, so as to efficiently manage multi-level computing and reduce energy-consuming memory transmission.

In addition to the processor architecture itself, various functional safety documents and development process certification provided by independent evaluation agency t Ü v s Ü d provide manufacturers with the required information to help ensure that the system meets the requirements of functional safety standards.

"Vehicle safety is very important for every driver driving on the road," Miro said. "Whether it's radar, sensor fusion, embedded processing, power management or communication, Ti technology will continue to help automobile manufacturers achieve a zero collision mobile driving scenario."

Keen to create a better world

Helping automobile manufacturers improve automobile safety is one of the ways our innovators are committed to reducing the cost of electronic products and making the world a better place through semiconductor technology. We have been persistent for many years. Every progress and breakthrough innovation is based on the innovation of the previous generation, making electronic products smaller, more efficient, more reliable and more affordable. This is the progress of the project. This is what we have been doing for decades and now.


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