When the first simple remote-controlled "self-driving" car appeared on Earth in 1925, people have been exploring this travel scene that symbolizes freedom and science fiction for a hundred years. Today, assisted driving is still a new thing, but the domestic models on sale have the ability to assist driving models have been everywhere, when I tried many auxiliary driving models, the most exciting thing for me is the Xiaopeng P7, both in terms of ability and giving people a sense of security have achieved the benchmark level, in our "CC-400A intelligent driving evaluation system" also got the highest score at present.
"CC-400A Intelligent Driving System" for vehicle auxiliary driving ability is divided into four major test modules: intelligent driving (accounting for 69%), automatic parking (accounting for 18%), navigation assisted driving (accounting for 13%), innovation items (no upper limit), from the four modules can be mapped 10+ driving scenarios, 49 core capabilities and 31 basic capabilities, each with a full score of 5 points, the total score of the system is 400 points (excluding innovation items), in order to objectively and fairly evaluate the vehicle assisted driving ability.
We tested the vehicle as a 480E, without its own driving assistance software, and its powerful power can be revealed after the optional XPILOID 3.0 assisted driving package (optional price of 36,000 yuan). This car uses the NVIDIA Xavier chip with 30 TOPS hashrate, the computing power performance is between the WEIO ES6 and the Tesla Model 3, equipped with 10 high-perception cameras, 5 millimeter-wave radar, 12 ultrasonic radars, and 4 surround-view cameras, this hardware configuration is currently at the leading level, and theoretically can achieve "no dead angle monitoring" state.
Xiaopeng P7 assisted driving ability is currently ranked No.1 in our system, of which the urban scene, automatic parking scene, navigation assistance scene is the most prominent performance, are the best performance of all the current test models, even in the fierce competition of the new power brand is also very eye-catching.
Large curvature curve stable through good sense of security
Xiaopeng P7 has the right speed ability in the corner, it can be automatically reduced to the appropriate speed according to the size of the curve to pass, in the high-speed ramp common large curvature curve (curvature radius of about 70 meters), the driver into the bend at 70km/h, the vehicle can automatically adjust the speed to 45-50km/h between the pass, the speed capacity is good, the overall cornering remains centered, the correction frequency is low, and it will not affect the comfort of the personnel in the car. In the small curvature bend (curvature radius of about 200 meters), 70km/h is stable through, there is no problem at all, and the sense of security and efficiency given to the driver in the bend is better balanced.
The lane change command responds quickly and has a better sense of efficiency
In the only open the basic ACC + LCC assisted driving state (non-NGP navigation auxiliary driving state), when the speed exceeds 40km/h, you can realize the manual turn signal automatic turning lane change function, which is also the lane change strategy of most auxiliary driving vehicles, when the system detects that there is no car in the rear when the lane is changed, the automatic auxiliary lane change can be automatically assisted by manually hitting the turn signal for 1.67 seconds, and the overall lane change process is smooth and fast. When there are more vehicles in the rear, the system waits for a shorter time to change lanes, and often prompts "It is not suitable for lane change at the moment" and terminates the lane change instruction. When the lane line is a solid line, the corresponding lane line of the manual turn signal will turn red for prompting, and the lane change instruction will continue to be executed after passing the solid line. This indicates that the system supports waiting for lane change instructions, but for security reasons, this wait time is very short.
In addition, Xiaopeng P7 in the mid-year update of the OTA version also added voice lane change function, in the NGP navigation assisted driving state, just wake up "small P" and then say "help me change lanes to the left / right", the system will automatically help you change lanes under the premise of safe road conditions, and there is voice feedback "OK, about to change lanes to the left / right". It should be noted that this function only supports the directional recognition of the lane change instruction issued by the main driver after the voice wake-up of the main driver, and will not be misoperated by the voice of other passengers, and there are certain considerations in the safety settings.
Assisted driving is not easy to misoperate, and the cost of logical memory is low
Xiaopeng P7 auxiliary driving function operation integrated in the steering wheel right rear of the gear, although it belongs to the "blind exercise" operation, but the overall operation logic memory cost is low, one step to open and not easy to misoperate, when the vehicle in front of the car state, the speed of 15km / h can be opened, and in the straight natural curve can also be opened, the applicability is wide.
Blurred/overlapping lane lines are stable driving High level of trust
When driving in more complex lane lines, many people are worried that assisted drivers will suddenly turn or lose the ability to center on overlapping lane lines, and Xiaopeng P7 does a very good job in this regard, can automatically filter out invalid lane lines, and can drive stably in blurred lane lines, and the overall recognition and decision-making of the system give people a high degree of trust.
It is better to follow the compact feeling again, and it is less likely to be plugged
Xiaopeng P7 supports the automatic re-following function, which has a better sense of compactness, smooth braking and starting, and the overall process is less likely to be plugged by other vehicles. If the front car is parked for a long time (beyond the system's automatic follow-up time), the dashboard will have the text "Please step on the accelerator pedal to resume cruising" and a beep prompt, at which time the driver needs to actively step on the accelerator pedal to activate the assisted driving function.
The logic of the entry and exit ramp is reasonable, and the sense of efficiency is better
We put the navigation assistance driving ability separately for scenario testing, Xiaopeng P7 in the NGP navigation assistance driving state as a whole outstanding, especially in the in and out of the ramp of this complex road conditions performance, thanks to AutoNavi's high-precision map and its own powerful software and hardware, from recognition to the final human body can perceive the interaction and measures, in terms of convenience, efficiency and safety have a good performance.
When entering the main road from the ramp, the automatic adjustment of the cruising speed can be carried out in real time according to the speed limit information and the curvature of the curve, when there are more vehicles on the left side of the main road, the system identifies the rear vehicle more accurately, the vehicle position and speed sense are more consistent with the driver's perception, and the waiting time for the main road is more skillful, but the occasional rear vehicle speed is too fast to lead to the failure of the sink. When exiting the ramp, it is more calm, 2 kilometers away from the exit, there are both voice prompts, and then choose the opportunity to start changing lanes to the outermost lane, the stability is good, there will be more voice prompts when entering and leaving the ramp, so that the driver can perceive the current state in real time, giving people a better sense of security and trust.
The optimal lane selection strategy is skillful and robust, and the sense of safety and efficiency is good
When there is a slow car or near the entrance and exit in front of the front, the system will automatically change lanes to the left, when driving at a long distance at a higher speed, the system is more biased towards the innermost lane, the optimal lane selection logic is that the lower the speed, the more active the lane change, and when the speed is close to 100km/h, it will be stable in the innermost lane, the enthusiasm for lane change will also be reduced, and the sense of safety and efficiency will be good.
This function needs to be learned and started to be used, and the ability boundaries are clearly recognized
Before using the NGP navigation assisted driving function, you must learn the relevant video through the Xiaopeng App of the mobile phone, and you can use the function after passing the exam, the overall operation process is simple and easy to understand, the video and the test are easy to understand and rich, and it is easy for the driver to have a clearer understanding of the ability boundary of the function.
The close-up is timely response by Gasse, giving people a high level of trust
When suddenly being jammed by other vehicles, identify and follow the vehicle in front of you in a timely and fast manner, you can take follow the brake when the front of the jammed vehicle enters the lane, the braking process is smooth and comfortable, such as the distance between the two cars in the process of congestion is too close, the simulation interface in the dashboard will also mark the target vehicle in red, so that the driver can more clearly perceive the danger, and the overall recognition and decision-making of the system gives people a higher degree of trust.
When identifying parking spaces, the driving route is highly tolerant, so you can quickly find more parking spaces
When there are parking spaces on both sides, there is no need to drive to the side of the specific bias to identify the parking space, the system has a high degree of tolerance and accuracy of the driving route when identifying the parking space, and can simultaneously identify the parking spaces in the four directions of the front and rear of the vehicle, and provide 6 parking pre-selected parking spaces at the same time, so that the driver can find the right parking space more conveniently. The parking interface is easy to understand, and the virtual interface is well integrated with the real location, so that the driver can quickly find the parking space he needs.
Support VPA memory parking, easy to operate and easy to understand
Do not be "VPA memory parking" words scare and dare not use, in fact, it is the underground garage fixed parking space automatic driving + automatic parking function of the integration, first of all you have to follow the operation guide on the central control screen to complete a simple learning process, and then every time you enter the basement, use this function will automatically drive to the parking space and parking, which encounters obstacles and vehicles, the system will automatically park or detour, the intersection in the basement will also have active prompts, the sense of security is very high, the sense of efficiency is moderate, there is a strong willingness to use.
The simulation interactive interface has moderate recognition richness and smooth refresh
The interactive interface of assisted driving simulation in the dashboard is of moderate recognition richness, it can display the virtual model of cars, trucks, motorcycles, and pedestrians, the speed and position sense of the virtual display are more consistent with the driver's visual perception, and the surrounding close-range model basically does not drift, which will not cause trouble to the driver's operation or judgment.
It is more consistent with the driver's visual perception and has strong high-definition map rendering ability
Thanks to the high-precision map of AutoNavi, in the state of NGP navigation assistance driving, the rendering effect in the central control screen is very good, and there are better 3D effects display for viaducts, isolation belts, surrounding houses, etc., and the dynamic effect display when changing lanes is clear and easy to understand, so that drivers can more easily perceive the surrounding environment, reduce the difficulty of human-machine communication, and make the gap between human-machine communication smaller, and the display effect of this high-precision map rendering is also an inevitable trend at the interactive level of future assisted driving.
Steering wheel does not take over can be divided into three levels of warning, can be stopped and has a penalty mechanism
In the assisted driving state, when the driver leaves the steering wheel, the system will be divided into three levels of early warning, first of all, after the steering wheel is off hand for 15 seconds to enter the first level of warning, the system will issue a beep sound + dashboard Chinese word "please turn the steering wheel" + instrument icon prompt; 10 seconds after the first warning to start the second warning, on the basis of the previous warning, the buzz sound is more urgent, so as to more clearly and effectively prompt the driver; if the driver still does not take over, the second warning 5 seconds after entering the third level of early warning, The instrument appears a large-size static icon, the steering wheel inside the icon becomes red, and the central control screen appears red static icon + red dynamic flashing light prompt on both sides of the screen, and the safety belt has a strong continuous tightening action, at which time the lane-keeping function automatically exits, and the voice prompts "Please take over immediately, LCC assisted driving has exited". After the three-level warning occurs, the system will prohibit the driver from using the LCC assist driving function, and the penalty mechanism can be lifted after the vehicle is powered down.
Through voice interaction, cognitive capability boundaries and driving rights status can be clearly defined
In the basic assisted driving state, Xiao P can prompt the driver in real time through voice the opening and closing status of the ACC/LCC auxiliary driving function, so that you can always perceive the transfer of driving rights, and this real-time right to know will make people feel safe. In the NGP navigation assisted driving state, the voice prompt of the small P will become more active, not only will prompt the opening and closing state of the function, but also real-time prompt you of potential dangers according to the road conditions, such as in the corner, it will prompt you to be careful about driving in the corner, etc., it can prompt the driver in different risk scenarios in time, so that the driver can judge whether he needs to take over the vehicle, so that when encountering some emergency situations, the driver also has sufficient time to deal with.
Summary of the full text
Xiaopeng P7's strengths in assisted driving are probably summarized by 3 points, first of all, hardware, 31 sensors throughout the car, vision and radar fusion perception ability is powerful, which brings strong support for the auxiliary driving function; followed by functional experience, it is at the level of basic assisted driving and navigation assistance driving, the comprehensive performance in various scenarios is at the leading level, which in addition to benefiting from the hardware foundation, but also benefits from the advantages of full-stack self-development; and finally, human-computer interaction, It starts from the learning examination mechanism to first make the driver's cognitive ability boundary clearer, and then through a variety of effective prompts such as voice + beep tone + color change, it gives drivers different degrees of interaction in different scenarios, that is, effectively gives people hints, but does not make people feel excessive interaction. The above three points are at the leading level in the industry from both one point of view and a comprehensive point of view, which has created the benchmark assisted driving ability of Xiaopeng P7.