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Paving the Way to Self-Driving Cars with ADAS (Rev. A)

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Paving the Way to Self-Driving Cars with ADAS (Rev. A) Paving the way to self-driving cars with advanced driver assistance systems Hannes Estl Worldwide Systems Marketing for Advanced Driver Assistance Systems (ADAS), Texas Instruments Recent publicity has attracted the public eye to the development of automated vehicles, especially Google’s experimental cars that have logged thousands of self-driven miles with minimal help from human drivers. These events are truly impressive, and in the long term will help revolutionize vehicle operation and our experience of driving. But the excitement about self-driving cars can make it easy to overlook numerous short-term developments by automotive manufacturers that are equally important in transforming the act of driving. Collectively known as Advanced Driver Assistance Systems (ADAS), these developments are designed to make cars safer, and their gradual introduction is already improving road safety. In addition, ADAS features represent an evolution in vehicle sensing, intelligence and control that will ultimately lead to self-driving cars. ADAS technologies exist at different levels of active Volume production of automobiles with fully assistance and are being introduced in overlapping autonomous control is probably a decade away stages. Driver information systems, such as simple at this time, although as today’s experiments rear-view cameras, surround-view displays, and demonstrate, the essential technology for self- blind spot and lane departure warnings, provide driving cars already exists. However, advanced information but leave the driver in full control at all electronic systems take up much of the space in times. Partially autonomous systems, such as lane- automated test vehicles and are far more expensive keep assistance and active cruise control, enable than the cars themselves. To make self-driving the vehicle to control itself briefly in carefully defined feasible for vehicles in series production, the situations, but with the driver ready to override technology will have to be commercialized and automatic control at all times. Highly autonomous made smaller, more light-weight and affordable, a systems, including automatic parking valet or process that can only be accomplished gradually impaired driver monitoring and override, will take full over a period of years. Moreover, there are legal control of the vehicle at specific times. These higher and social hurdles to overcome, which will take levels of assistance employ the technologies used in time. Clearly, the development, introduction and the more basic levels, paving the way to self-driving, conversion of the fleet of cars on the road to self- fully autonomous cars. At this level, the car can driving will be an evolutionary process that spans a operate on its own, with or without someone in the number of automotive generations. driver’s seat. Paving the way to self-driving cars with advanced driver assistance systems I 2 July 2020 ADAS by its nature perfects different aspects of panoramic or surround view with the infotainment automated control, at first in independent sub- system to provide owners with a new degree of systems, then with increasing levels of system “infotainment.” Early systems have been introduced integration, until ultimately the vehicle can drive with interpretive capabilities for, say, reading street itself. Evolving these various assistance functions is signs or detecting objects around the car, and the job of automotive manufacturers, who look to buyers will see more options in upcoming years. semiconductor suppliers like Texas Instruments (TI) Following a familiar pattern, features like these appear for innovative technology and solutions. Because initially in high-end models, then migrate to mid- ADAS technology is changing rapidly, auto makers range vehicles and eventually become available on need solutions that provide extra performance all new cars. Where safety is concerned, insurance for system growth, and the flexibility to integrate companies, regulatory bodies and legislatures new features with minimal design changes. ADAS normally become involved, accelerating phase-ins and other automotive systems also pose unusual through favorable premiums and legal mandates. In challenges for manufacturing components, including some cases, legislation will be essential to resolve the need to operate at extreme temperatures, questions of liability and also change existing satisfy higher quality, reliability and safety standards requirements. For instance, today cameras and and meet stringent cost targets. With its extensive interior displays could replace external rear-view experience in creating products for automotive mirrors, not only enhancing safety by eliminating the electronics, TI can help ADAS developers by offering treacherous blind spot, but also streamlining the car’s optimized, complete solutions that help simplify profile for improved gas mileage and reduced carbon design and minimize component counts. emissions. However, since existing safety standards often mandate car mirrors, regulations must be ADAS adoption status, challenges changed to permit these improved replacements. As presented earlier, some ADAS features exist The first changes of the legal framework to allow in cars today, and others are in development for cameras instead of side view mirrors—called camera upcoming models. Information and warning systems monitoring systems—have already been rolled out in have appeared for several years now, evolving a few countries. The European NCAP system gives into the basic assistance capabilities that are now star ratings, for example, in blind-spot monitoring becoming common as well. For example, many and the U.S. NHTSA has mandated that all new recent models have features that help in backing vehicles must have rear view cameras by 2018. up. Ultrasound and cameras can extend the driver’s Security is also a concern as cars begin to perception, and the car may brake automatically if communicate with each other and with installations something suddenly appears behind the car. The along the roadway. However important it may camera and ultrasound look behind the car while it be for automated vehicles to establish these is in reverse. Similarly, many drivers can now rely on communications, they also will need protection autonomous acceleration and steering through a from malicious intrusion. These issues are not combination of front cameras and radar to keep the technically insurmountable, but they also involve car in the center of its lane and cruise with traffic, legal and social adaptations that cannot happen even when speeds are continually changing. Some overnight, and functional safety standards that cars combine ADAS informational features such as auto manufacturers must adhere to will need to Paving the way to self-driving cars with advanced driver assistance systems I 3 July 2020 be established. Manufacturers will need to rely on the subsequent ones. That is, information systems semiconductor and equipment providers to produce may be passive, simply offering warnings to the parts that auto manufacturers can use to get their end driver, but they are also essential elements in all products easily and quickly certified and into market. forms of autonomous function. Similarly, basic active operations will later integrate into advanced Evolving ADAS features control and fully automated operation. (These levels The chart below outlines are some important roughly correspond to the National Highway Traffic ADAS innovations that exist or are in development; Safety Administration’s five-tier classification of however, the field continues to evolve as new ideas vehicle automation which distinguishes some of its emerge. Each level of autonomy listed feeds into basic levels of automation by how many of a car’s functions are involved.) Information and warning Function specific automation • Side and rear cameras with driver • Lane keep assistance to stay in the displays center of the lane • Back-up assistance • Active cruise control for changing traffic conditions • Warning of oncoming cross-traffic • Collision avoidance by automatic • Ultrasound sensing of areas in front and braking behind the car obstructed from driver view • Automated emergency brake • Traffic sign recognition • Intelligent head beam assistance that illuminates curves ahead or prevents • Detection of lane markings blinding of other traffic participants • Blind spot warning Combined function automation • Night vision • Adaptive cruise control with lane centering • Ranging of objects ahead in conditions of poor visibility • Traffic jam assist • Vehicle-to-vehicle and vehicle-to- Limited self driving automation infrastructure communication • Automated parking/valet parking • Dynamic display image of the entire car and surrounding space • Highway auto pilot • In-cabin monitoring and warning to a distracted driver Full self driving automation Paving the way to self-driving cars with advanced driver assistance systems I 4 July 2020 Technical requirements for ADAS the same front camera that serves for lane-keep evolution assistance can also provide information to detect objects in front of the car, read traffic signs or apply The evolution of ADAS technology involves several the brakes to avoid a crash. However, performing areas of innovation. Two important related trends more complex ADAS functions requires not only include shrinking individual components such as input from more cameras and from other sensors sensors, cameras and electronics, and integrating such as ultrasound,
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