The development trend of DAS

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The development trend of DAS [Copy link]

At present, some DAS technologies have relatively mature products and have been applied, such as ABS, ESP, etc. Some other technologies are in the early stages of development or are about to be developed, as shown in Figure 6. For example, the optimization of navigation systems, power guidance systems and user-friendly systems are being studied. In the field of vehicle stability and navigation, a new feature is proposed based on the requirements of safety and comfort. When it has no effect on the vehicle's handling performance, it can combine the requirements of braking and steering to achieve it. Alarm systems such as vehicle speed and blind spots will also appear; Lane Keeping Assistance (LKA) with steering adjustment, ACC's stop-start, and emergency braking functions that can reduce serious accidents will also appear more and more in the mid-term goals.

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With the development of sensor technology, especially the rapid development of radio wave detectors and video image processing methods, the identification of the internal and external environment of the vehicle has become more convenient. Together with powerful computers and software systems, it can control some accidental traffic situations such as vehicle lane changing, overtaking, reversing, parking and starting.
However, in recent years, DAS cannot completely handle 100% of the possible traffic situations alone, so its development will focus on the reasonable distribution of workload between the driver and DAS. For the driver himself, the activity requirements should be at a medium level so that they can neither feel too much work nor too little.
The visual driver MMI, which is still dominant and supplemented by voice control and tactile feedback, may also maintain this state in the future, such as the active accelerator pedal and steering torque superposition currently used. This makes the operating interface of the driver-vehicle system more intuitive and can reduce the role of the visual channel.
Because there are many products that are not ready to be launched on the market, nor are they ready to be marketed, and their functional research work is only verified in the laboratory, sensors and electronic control units ECU have a special status, which can reduce product costs, installation space and product weight. For example, the development of yaw rate sensors for ESP shows that in this area, it is possible to achieve a big leap forward in products through miniaturization. The rapid development of commercial vehicles is due to mass production, while for passenger cars, especially sensors, it is due to the development of computers and wireless transmission technology. The development of yaw rate and radar sensors proves that only when the product output reaches a certain level can it be profitable.
In the more distant future, the development of DAS can be summarized by the word "integration". In the future, many stand-alone systems will be integrated together to form a complete system. We can describe DAS as "driver assistant" or "co-pilot". One of the elements is the growing demand for "integration" of DAS with the vehicle, such as the connection of longitudinal and lateral control systems and the use of reliable navigation data for distance control. Multiple applications of sensor data can improve the effectiveness of system cooperation. In addition, there are more and more interconnection requirements for active safety systems such as airbags and seat belt tensioners, especially when collision avoidance systems are activated when accidents cannot be avoided.
Apart from the single vehicle, the development trend of DAS is that it is more closely connected with external infrastructure (such as GPS radio receivers) and other vehicles. The entire "vehicle-traffic-driving environment" system is a fully functional system that becomes an integral part of the vehicle network.
Obviously, the complexity of a fully functional DAS in the future will be far greater than the current state. We can only manage the system through modular design and clear user interface definition.
Therefore, the future development trend of DAS can be summarized in three words: driving environment, driver and integration.
In short, from another perspective, the ultimate goal of DAS is to be widely used in the field of commercial vehicles and make profits. Therefore, the speed and scale of its development are restricted by regulations and user acceptance. Only those DAS that have obvious economic benefits to end users during the life cycle of the vehicle, and are stipulated by regulations, or are launched by equipment manufacturers as standard configurations of products without additional price tags, can be widely recognized by the market. Whether in the short term or in the long term, vehicles equipped with high-performance DAS can achieve the greatest possible safety performance, which has long been verified in the market.