Many car companies are also trying to impact more advanced driver assistance functions, hoping to bring consumers a smarter and safer driving experience.
Before, we experienced many assisted driving functions of the new forces of building cars, but there were relatively few assisted driving functions for luxury car companies. Recently, Cadillac's new generation of SUPER CRUISE super assisted driving system has ushered in a comprehensive upgrade, so what is its actual performance and what is unique? Today, we will have a profound experience.
First of all, what is a super cruise super assisted driving system?
Unlike many new forces who like to call the assisted driving function Pilot, GM calls its assisted driving SUPER CRUISE Super Assisted Driving System.
SUPER CRUISE was first introduced to China on 20 18, which is the first intelligent driving assistance technology in the world using centimeter-level high-precision map data. It is an L2+ high-speed/overhead assisted driving system, which consists of a camera, a radar system, a high-precision map and a DMS driver monitoring system deeply integrated with the system. The main functions are lane keeping, automatic lane change and command lane change.
Take the Cadillac LYRIQ sharp song we experienced this time as an example. Its auxiliary driving hardware includes:
1 Long-range radar and 5 short-range millimeter-wave radar are responsible for identifying the relative position and motion state of the object in front;
Four 360-degree cameras and a streaming media rearview mirror camera assist and enhance the driver's vision under low speed and parking conditions;
There is also 12 ultrasonic radar, which is responsible for detecting the surrounding obstacles at low speed and parking.
What are the updates of the new generation of super cruise?
Since it is called a new generation of super cruise super assisted driving system, the functional update is definitely the highlight.
It updates the DMS driver monitoring system and the current industry-leading dual-zone capacitive induction steering wheel; Unique patented technologies, such as tactile vibrating seats and steering wheel light strips, provide drivers with triple step-by-step warnings by combining sound reminders.
Of course, the most important update is the function of automatic lane change and lane centering. When the new generation of super cruise is started, the high-precision map and GPS navigation system with real-time correction function are strongly combined, and the vehicle will automatically integrate all the information of the two with the front camera to form a virtual vehicle control path along the center of the lane, so that the vehicle can accurately stay in the center of the lane line and easily realize functions such as automatic lane change and command lane change.
In addition, when the vehicle speed is less than 80km/h and the lane line is clear, the vehicle can also turn on the HoLCA intelligent lane centering assistance, which can automatically control the start, stop, acceleration and deceleration of the vehicle, fine-tune the driving direction, automatically keep the lane centering and follow the vehicle.
It is also important to draw a point here. Cadillac is the first brand in the world to use centimeter-level high-precision map data, and SUPER CRUISE is the only driver assistance technology in the industry that has the ability to completely free the driver's hands when the system is turned on.
Summarize the function points of the new generation of super cruise in one sentence, that is:
1. More secure, DMS driver monitoring system+dual-zone capacitive induction steering wheel;
2. More reliable, steering wheel light belt+general patented tactile vibration seat;
3. Simpler, command lane change assistance, automatic lane change assistance and HoLCA intelligent lane centering assistance function.
A new generation of super cruise experience
In order to deeply experience the function of the new generation of super cruise, we drove this Cadillac Rigg on the expressway from Guangzhou Company to Zhongshan, and the whole journey was about 180km, including the conversion of different high speeds.
The opening of the super cruise function is not complicated. It is opened by the touch button on the steering wheel. Capacitive keys have vibration feedback and feel very good.
The chrome-plated buttons on the top adjust the speed and distance, which is also easy to understand.
1. Automatic car following and lane centering
Automatic car-following acceleration and deceleration and lane alignment are the most frequently used functions under high-speed road conditions, and they are also the most basic functions.
When the super cruise function is turned on, the indicator strip on the steering wheel will light up and show green. For friends who experience this function for the first time, the process of psychological construction is essential.
After the indicator light is on, theoretically, you can relax your hands and feet at this time. The vehicle's GPS will combine high-precision map data with vehicle-mounted sensors to judge and correct the vehicle's position in real time to ensure that the vehicle is driving in the middle of the road.
In the automatic car following function, you can feel its personification. Acceleration and deceleration are smooth, and there is no such action as sudden start or sudden braking. When there is a local train ahead, it can also brake and slow down in a straight line, which ensures the comfort of people in the car.
Of course, a prerequisite for letting go of this function is that the driver's sight and attention cannot be distracted, and he must always pay attention to the road ahead, obey traffic laws and drive safely.
However, according to the actual measurement, the driver's sight is not strictly restricted, and he is still allowed to move within a comfortable range. Of course, if he looks down at his mobile phone or turns to look out of the window, there will be a time limit of 3-5 seconds, which will be introduced separately in this chapter.
2. Automatic lane change
The newly added automatic lane change function is the focus of this update. During the opening of the new generation super cruise, vehicles can automatically choose the timing of lane change according to the road conditions, successfully overtake the local train and return to the current lane. Of course, you can also change lanes manually by turning the light pole. It is said that this lane-changing action is quite "sophisticated" and the lane-changing action is done in one go.
At the same time, the performance of automatic lane change is commendable, that is, it will accelerate the overtaking process according to the actual situation and begin to accelerate during the lane change process. On the one hand, it can avoid the possible danger caused by the approach of the rear vehicles, on the other hand, it can also avoid causing some unnecessary congestion.
3. Identification and treatment of blocked vehicles
Another common scene encountered on the expressway is that the cruising process is blocked, which is quite a test for vehicles to identify and deal with the surrounding environment.
The performance of the new generation of super cruise is more like a kind of human treatment. When the traffic jam is an accelerating process, then the system will not choose to brake to slow down, which is almost a logic with the driver driving himself. At present, the acceleration of traffic jam is insufficient, and the distance from it is constantly shortening. At this time, the brakes will slow down and keep the distance.
In addition, the new generation of super cruise has many very detailed settings. For example, when the current ramp merges into the traffic flow, this system will change lanes in advance to prevent traffic jams ahead, which is also due to the cooperation of high-precision maps.
4.DMS driver monitoring system
The function of DMS driver monitoring system is actually involved in every link, so let's talk about this function here.
Unlike other brands, which are extremely sensitive, Cadillac LYRIQ sharp songs are smarter and more reasonable. In the center of the steering wheel. The super cruise is equipped with a camera and an infrared transmitter. In the process of use, it can track the driver's eyeball through the latest infrared technology, and judge and remind the driver's fatigue or distracted state, but it will not be very "neurotic". It is as sensitive as some other models and can judge whether your actions are really distracted and tired.
More interestingly, even if you wear sunglasses, it can still accurately judge your state. This is because Cadillac's high-performance DMS infrared camera, combined with the unique infrared fill light in the industry and various auxiliary algorithms, can avoid the influence of special environment and facial occlusion, and can accurately judge whether the driver's line of sight is parked on the road ahead and whether he is focused on driving various scenes, including poor lighting at night, sunglasses, hats and masks.
Of course, this is just a way of monitoring. The more subtle aspect of this system lies in the way of reminding. The whole system provides triple early warning step by step. During the test, we also tried a little. After monitoring that the driver's line of sight leaves the road, the system will start the first-level warning, and the Lightbar steering wheel light strip patented by GM will be in a green flashing state.
If the driver does not resume taking over, the system will start the second-level safety reminder, the steering wheel light bar will flash red, and the instrument cluster logo will turn red to provide a more obvious visual warning. At the same time, the patented tactile vibration seat reminder or buzzer reminder will be turned on.
If the driver still fails to take over the driving after the second-level safety reminder, the system will start the third-level warning. The steering wheel light bar will continue to blink in red, and the instrument cluster logo will be red. When the vibrating seat reminder or buzzer reminder is turned on, a voice broadcast reminder will be issued.
If the driver still fails to take over after the three-level reminder, the vehicle will turn on the double flashing warning light and slow down. At the same time, Anjixing's artificial seat will actively contact and confirm the driver's status.
Of course, for security reasons, the latter two situations do not appear in our experience, but they are indeed life-saving functions at critical moments.
Generally speaking, today's experience of LYRIQ's new super cruise super assistant system has been fruitful, and the biggest impression is its handling of safety and details.
First of all, in terms of basic functions, it can quickly and accurately identify the lane, stably control the vehicle to run smoothly, and follow the car smoothly, basically without the intervention of the driver, which makes people worry; Moreover, in the newly added automatic lane change function, the lane change action is highly anthropomorphic, which can accelerate the lane change action in time; In the aspect of driver's monitoring and reminding function, it is accurate to judge, timely to remind, light and urgent to remind, which greatly increases the driver's peace of mind.
Write it at the end
We often say that the new forces are more radical in the function of intelligent driving assistance, but luxury car companies like Cadillac choose to adhere to stability and safety.
In the autumn of 20 17, GM introduced the super cruise function in North America and Canada through the flagship model CT6 of Cadillac, allowing drivers to take their hands off the steering wheel on closed roads, and the cruising speed can reach143 km/h.
Today, including industry pioneer Tesla, no car company can let users leave their hands on function settings.
When I came to China, Cadillac was constrained by domestic laws and regulations, and its performance was relatively low-key, which just shows that luxury car companies have existed for a long time in technical reserves and accumulation, but they must ensure safety before they can be used by users.
In LYRIQ Riggs, we see that luxury car companies are actually deeply cultivating driver assistance functions, but they are more pursuing safety and reliability.
This article comes from the author Hao, and the copyright belongs to the author. Please contact the author in any form. The content only represents the author's point of view and has nothing to do with the car reform.