In various driving assistance systems, not only cruise control or rearview cameras, but also active distance control cruise systems, lanekeeping and change assistance systems, advanced emergency braking systems, and active frontweel steering systems are all part of driving assistance technology, and these systems are achieved through the intelligent combination of MEMS inertial sensors and perception systems such as cameras, radar or optical radar.
The automatic assisted navigation driving function in Tesla cars is an optional feature. On June 13th, a high-speed Tesla Model3 was driving on the busy 405 freeway in Los Angeles, and the driver fell asleep. The car drove for at least 30 miles in autopilot mode. Later, the driver next to him sounded the alarm. However, the police did not arrive until Tesla drove out of the 405 highway, so they filmed a video and posted it on social media, attracting attention from netizens.
Recently, Tesla has pushed automatic assisted navigation driving function to Chinese car owners. This function can enable the vehicle to automatically change lanes, overtake, and enter and exit the ramps on the highway based on the navigation route. The automatic assisted navigation driving function, called Navigate on Autopilot, or NoA for short, can independently complete lane-changing overtaking, automatic entry/exit ramps and other operations under the driver’s monitoring.
It is worth mentioning that the automatic assisted navigation driving function is a function of Tesla’s FSD (full self-driving capability), and FSD is an optional feature for Tesla models, with a price of 56,000 yuan. Tesla owners who do not choose this configuration cannot use automatic assisted navigation driving.
Inertial sensors are helpful in predicting paths and connecting them to obstacle detection. In the various driving assistance technologies, the active distance control cruise system (ACC) requires more specific experience than cruise control. Although traditional cruise control technology can save fuel and be more comfortable for long-distance driving, it is necessary to periodically switch cruise control switches according to the nearby vehicle speed in order to maintain a safe distance from other vehicles. ACC can adjust the speed according to the need, rather than keeping moving at a constant speed in order to maintain a safe distance from other vehicles. ACC mainly utilizes radar, cameras, or lasers to measure the distance between objects. Similar inertial devices can also achieve characteristics such as hill climbing control, allowing a low gravity sensor to determine the angle of inclination by using the direction of gravity downwards, so that the vehicle climbing uphill will not slide backwards.
Active steering technology is another driving assistance technology that can reduce the degree of variation of the steering angle of the wheel at higher speeds. This function can improve the accuracy of highway driving, and the yaw rate sensor can provide relevant information on sudden situations. The good news is that not only luxury RVs, but some mid-priced vehicles have also been equipped with driving assistance systems. BMW started to launch vehicles with active steering function on the market a long time ago, and Ford’s Ford Edge also has this function. We believe that other automakers will follow suit soon. Similarly, inertial sensors use cameras, radar, and laser to achieve assisted driving. The technology can achieve automatic driving by predicting the movement of the car.
作者：传感器资讯 来源：传感器专家网 原文:https://www.sensorexpert.com.cn/article/1322.html 版权声明：本文由传感器专家网整理发布，转载请注明出处和链接！