Daikin Dragon pushes active safety technology to keep passenger cars away from danger

At the end of August, there were three serious road traffic accidents in Shaanxi and Sichuan. In two days, there were three rear-end collisions and 57 lives fell. This deeply hurt people's nerves. In the face of accidents and casualties, apart from compassion, anger, and reflection, what else can we do and what positive measures can we take to prevent similar incidents from happening again, so that the tragedies will not be repeated?

Some automotive safety experts pointed out that with the help of active safety technologies and car networking technologies, major safety accidents of passenger cars can be effectively stopped. According to expert analysis, more than 80% of passenger vehicle safety accidents are caused by speeding, fatigue driving, and improper handling of distress. If remote monitoring technology and intelligent electronic devices can be used, certain interventions in these three situations will be conducted to keep the vehicle at a reasonable level. The speed of driving, strictly limiting the driver's continuous driving time, when the vehicle encounters a potential danger and can take the initiative to issue a warning, you can largely prevent security incidents.

The reporter learned that in the field of active safety technology R&D and application, companies in the domestic passenger car industry have already taken the lead and achieved major breakthroughs, and have taken the lead in commercialization.

Since the second half of this year, Daikin Dragon, the leading domestic passenger car company, has launched three active safety technologies: forward anti-collision alarm system, lane departure warning system, and road automatic speed control system. All three technologies are large. Jinlong's self-developed research and development can be called as three major safety tools. All of them have been verified by experiments and can be used on commodity vehicles.

The reporter interviewed Dr. Chen Xiaobing of New Golden Dragon Technology Research and Development Department to understand the latest technology. Dr. Chen Xiaobing did not rush to explain it to us. First, he repeated it twice: “It's a pity.” Then he said: “If the road transport bus can introduce the main The passive safety system allows the bus to take the initiative away from danger and there will not be such a big casualty."

According to Chen Xiaobing, Dajinlong’s R&D is closely related to “4S”. The first “S” is safety. Buses are used as public transportation. Safety must be placed first, and active safety technologies that are already commercialized have Forward anti-collision alarm system, road automatic speed limit control system and lane departure warning system, combined with the long-distance control function of the previously launched Dragon Wing system, can basically eliminate the safety hazards of three passenger cars: speeding, fatigue driving and improper handling of distress.

Although the conclusion of the investigation of 8.26 large traffic accidents has not come out yet, the rear-end is the most direct cause. The other two major accidents on the 27th are also for this reason. Chen Xiaobing said that the function of the forward collision alarm system is to focus on solving this problem. It is an active safety device that focuses on the frontal (vertical) safety of the vehicle's driving direction. It can warn the driver through the alarm. Obstacles, make hedging actions in advance. Dajinlong forward anti-collision alarm system uses millimeter-wave radar to detect the relative distance and relative speed between the vehicle and the obstacle in front, and uses intelligent algorithms to judge whether there is a danger of potential collision. When a collision may occur, it can be heard through sound, light and vibration. The method reminds the driver to provide the driver with more reaction time and greatly reduces the possibility of rear-end collision. According to the analysis of the relevant test report, if the driver has 0.5 seconds of additional warning time, about 60% of rear-end accidents can be avoided, and 1 second extra warning time can avoid 90% of rear-end accidents.

Lane departure warning system

Jinlong Long Forward Collision Alarm System FCWS Schematic

Chen Xiaobing said that in addition to direct reasons, indirect reasons may be more worthy of study, mainly speeding and fatigue driving, which is also the cause of most accidents. For both cases, the country has corresponding management regulations that require local authorities to take measures to regulate it. However, once the vehicle is on a high speed, supervision is difficult. Therefore, the driver is speeding and fatigued for the sake of saving time and pursuing interests. Driving has become a normal state and the management department is also very big.

Speeding traffic is listed as the top ten traffic violations that result in high frequency of traffic accidents and serious consequences of accidents. For speeding, Daikin developed an automatic road speed limit control system, which is an active safety device that can truly solve the problem of overspeed. With the help of the "car networking" platform, the system can use the electronic fence to set speed limits for different sections of the vehicle's travel routes (tunnels, high-speed entrances, exits, corners, ramps, etc.), and enforce speed limits on the vehicles. Comprehensive consideration of different road environments, different vehicle types, different weather conditions and other factors on the vehicle's driving speed real-time control. With the help of "car networking" technology, Dajinlong Road's automatic speed limit system can obtain road meteorological conditions at any time. Under bad weather conditions, it will automatically lower the speed limit to ensure the effectiveness of automatic speed limit. Different from the past restriction devices, no matter what road section or weather, it is a speed limit that is unrealistic and the effect is unsatisfactory.

Although the frequency of fatigue driving accidents is not as fast as speeding, the risk of fatigue driving is the highest, because once the driver is tired, driving may cause confusion, loss of ability to sense, predict and respond to potential dangers. In order to realize the intervention of fatigue driving, Daikin has considered a variety of solutions. First, it can remotely control the engine switch through the platform of the Dragon Wing system, forcing the vehicle to not be used within the specified time, such as 2:00-5:00 in the morning. Second, you can monitor the continuous driving time of the vehicle, over a set time, voice prompts, warning the driver to stop, if the warning is not stopped within a specified time after the issue, you can force limit the speed, the speed down to 60 km / Hours are even lower.

Chen Xiaobing said that Dajinlong is still developing a fatigue driving alarm system. Through the capture of driver's pupil changes, continuous time recording, abnormal deviation from the lane and other improper driving behavior frequency statistics, to determine whether the driver tends to fatigue driving, through the voice, seat Signals such as chair and steering wheel vibration alert the driver to a “parking break” warning.

From this point of view, as the automotive safety experts say, active safety technology can really stop the occurrence of passenger car safety accidents, and according to the introduction of Dai Jinlong engineers, the application of these active safety technologies in vehicles has also been verified technically. There is no problem with reliability. A large amount of commercial mass production can be realized, and the use cost is not high. The reporter believes that if the government takes the lead in making great efforts to speed up the promotion of active safety technology for passenger cars, it may be “effective and effective” compared to administrative supervision and administrative accountability.