According to forecasts of IHS Global Perspective Automotive Group, a world-renowned economic consulting agency, there will be nearly 54 million autonomous vehicles worldwide by 2035. By 2050, almost all automobiles will be self-driving cars or self-driving commercial vehicles. Judging from the current situation, not only automakers have burst out of the autopilot program, even IT companies have ventured into it. Google’s self-driving cars have been on the road, and Baidu is also increasing its research and development projects. Automated driving is moving from ideal to fast to reality. No matter how vigorous this process is, security is always the core of autonomous driving. Especially active safety technology determines the development and maturity of autonomous driving to a certain extent. In a recent exchange with Dr. Shen Junqiang, senior technology manager of Delphi's Asia Pacific region, he stated that active safety and automatic driving complement each other and is the only way to autonomous driving. And explained to reporters the development of automatic driving based on active safety. Assisted driving phase - stop only at warning and automatic braking As an early stage of autopilot, the assisted autopilot system provides the driver with assistance that includes providing important or useful driving-related information and issuing clear and concise warnings when the vehicle becomes critical. Such as lane departure warning system LDW, adaptive cruise control system ACC, electronic stability control system ESC, lane keeping assist system LKA, emergency automatic brake, etc. Overall, the vehicle control achieved at this stage is mainly reflected in early warning and automatic braking. At present, active safety technologies such as those mentioned above have basically been mass-produced and are continuously deepened and upgraded on the basis of existing products. For example, the original function of the adaptive cruise system ACC is to automatically adjust the speed of the host vehicle to keep the driver's preset safety distance from the preceding vehicle. Delphi, on the other hand, developed a full-speed range ACC system that can control the vehicle speed until it is completely stopped, and can start and return to a preset speed based on the driver's input (such as pressing the accelerator pedal or pressing the resume button). When the distance between the vehicle and the preceding vehicle is less than 2 seconds, the inter-vehicle distance alarm function gives an alarm to avoid getting too close to the vehicle. Not only that, according to Dr. Shen, the realization of the driver-aided basic sensor equipment radar and camera is also constantly innovating and improving technology. The limitations of the original laser radar are relatively large, and the rain and fog performance is affected. However, the detection distance of ultrasonic radar is only about 3 meters. It is generally used in parking assistance systems. With the development of technology, the millimeter wave radar with strong comprehensive performance appears. Such as electronic scanning radar ESR, can achieve adaptive cruise, collision warning, brake assist and other functions. Nowadays, with the rapid development of active safety, the number of radars and cameras has continuously increased, and manufacturers have begun to gradually integrate the two, and the range of functions achieved has been continuously expanding, which has entered part of the autopilot stage. Partial Autopilot - 360° Target Sensing Auto-Swap Function Involved Dr. Shen told the reporter that the most important feature of some autopilot phases is the high integration of radar and cameras, which makes the entire system more responsive and more flexible in applications such as the RACam system and the collision relief system CMS. When the vehicle equipped with the CMS encounters a high risk of collision, the system will give the driver a warning. If the driver does not respond, the system will automatically brake to avoid collisions or mitigate the damage caused by the collision. However, most of the products currently on the market are limited to 50% of the brakes. Delphi maintains its advantages in this regard and can achieve full-featured braking. On the basis of the perfect integration of radar and camera, some of the autopilots are different from the driving assistance in that they sense the vehicle’s 360° target and thus realize the function of automatic lane change. Dr. Shen explained that in the driving assistance phase, the vehicle encounters an emergency situation and can achieve automatic braking to decelerate. In addition, there is another way to control the steering wheel to avoid, so that the vehicle can automatically change lanes. Whenever the brakes change lanes, it is necessary to fully perceive obstacles around the vehicle to make more safe adjustments and responses. In order to achieve this goal, Delphi has developed a short-range radar (SRR3) for short-range applications based on medium and long-range radar, and plans to start production in 2015. The rear and side 76GHz radar sensors have multiple safety functions (blind spot detection, lane change and merge assistance, rear vehicle crossing warning, vehicle rear-end warning, and a door opening alarm function that is suitable for China's national conditions). In addition, high-performance medium-range radar (MRR) is also under development. Dr. Shen predicts that the automatic lane change based on 360-degree perception has already been under development, but it will not be too far away from mass production. It will take about two to three years. Variable Valve Timing (VVT, Variable Valve Timing) is a technology used in automotive piston engines. VVT technology can adjust the overlap time and timing (part or all) of the engine's intake and exhaust systems, reducing fuel consumption and improving efficiency. Adjustable Cam Gears,Camshaft Sprocket Gear,Camshaft Timing Gear,Gear Driven Camshaft Wenzhou Zhongking Parts Co.,ltd , https://www.oemvvt.com
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Delphi: Active Safety - The Only Way to Automated Driving
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