On October 18th, 2011, the 6th China Road Traffic Accident Research Symposium hosted by Tongji University, Shanghai University of Engineering and Technology, and Shanghai Automotive Engineering Society hosted by Shanghai Joint Road Traffic Safety Research Center was held in Shanghai. . In the 10 special reports, two of the speeches from auto parts suppliers appeared in the content of “crashesâ€. Both of them used automatic braking technology as an introduction point, which revealed that it would help to avoid intelligent rear-end and pedestrian protection. Safety technology has attracted the attention of the industry and is expected to become a new selling point for automobiles.
Expected to become a new car selling point
An expert from Bosch 's Chassis Control Systems Division stated in his speech that Bosch’s long-term vision is to achieve auto-piloting and no injuries (zero accidents) by 2020. However, this can not be separated from the protection of a series of active and passive safety technologies. For this reason, since 2000, Bosch has introduced some driving assistance technologies in succession, and some of its predictive security technologies have been applied in the European and American markets.
Bosch believes that in all rear-end accidents, the driver did not implement the brakes in time to account for 20%, the brakes were applied in time but the brake pedal was under-intensified, accounting for 49%, and there were 31% of rear-end accidents when the driver even Did not have time to take any braking measures. To this end, Bosch has classified the predictive emergency braking technology into three categories according to its efficacy: predictive collision warning (PCW), emergency braking assistance (EBA), and automatic emergency braking (EBA) to correspond to the above 3 different reasons for the rear-end accident.
When the predictive emergency braking system detects a collision (such as rear-end collision, etc.), the PCW prompts the driver to perform braking in time through audible and visual alarms or short brake interventions; the EBA can pre-apply the brake fluid to the brake line. Pressurize to ensure that the braking system can quickly respond to the driver's braking commands and assist in full braking; when the driver is unable to respond after the rear-end collision is about to occur, the system can automatically start the braking and slow down the vehicle. , brake, to minimize rear-end or to ease the impact caused by the collision. Bosch's experts cited data from authoritative departments. The application of PCW, EBA and EBA technologies can reduce the proportion of rear-end accidents occurring at 38%, 55% and 72%, respectively, which indicates that the predictive emergency braking system has significant avoidance of frontal collisions. Safety features.
Afterwards, Otoliv's experts presented an informative report on the significant role of the automatic braking system in reducing pedestrian damage. Through an in-depth analysis of 243 pedestrian collisions between 1999 and 2003 in Germany, Autolif believes that 60% of deaths and 26% of serious injuries, before the collision, the driver can fully see the danger, However, the driver did not step on the brakes or stepped on the brakes but did not provide sufficient strength. Therefore, the automatic braking system can greatly reduce the probability of collision with pedestrians if auxiliary detection and sensing technologies such as radar or camera are used.
Still need to overcome water and soil
In fact, in addition to Bosch and Autolif, intelligent safety technology based on automatic braking has also received collective attention and active promotion from other multinational auto parts suppliers. For example, in February 2011, TRW announced the launch of a new cognitive security system that can combine automatic emergency braking and active control of retractors with seatbelts to enhance the driver’s alert function. The occupant is restrained to the position protected by the airbag, and it can provide automatic braking protection. TRW expects to mass-produce a forward-looking pedestrian collision mitigation system with full braking capability in 2014. At the Frankfurt International Motor Show held in September 2011, German mainland revealed that before 2015, it will supply approximately 2.2 million emergency braking systems for global automobile manufacturers. The mainland company believes that the stereo camera used by the company is like a person's "double eyes", can accurately identify obstacles, and can measure its distance and size, and thus help develop a new generation of emergency brake assist system.
Due to its outstanding auxiliary safety features, the automatic braking system has also been favored by OEMs early. Ten years ago, when introducing its leading safety technology, Mercedes-Benz introduced a PRE-SAFE technology that can predict the risk of collision and prepare the brakes and airbag safety devices in advance to be ready for “imminent†preparation. Today, almost all Mercedes-Benz models Both use PRE-SAFE technology. At the same time, the Volvo S60, which is currently sold in China for imported vehicles, is also equipped with a radar-based and camera-based pedestrian safety system with full automatic braking. It is reported that when the speed is lower than 35 kilometers per hour, the system can prevent the car from colliding with pedestrians.
The automatic braking system not only can greatly avoid the risk of a frontal collision of the car, but also its technology has gradually matured and it has begun to be put on the market. Then, whether the automatic braking system is about to usher in a big development in the Chinese market? In this regard, experts said that the relative loose road traffic environment in Europe and the United States is different. In the Chinese urban roads, the distance between cars and vehicles is often less than 1 Meters, such as the design of automatic braking systems in Europe and the United States, in which case the vehicle needs an automatic emergency brake. Therefore, the automatic braking system needs to be optimized for the actual situation of domestic road traffic in order to prevent the automatic braking technology from being "automatically braked" when it encounters "acclimatization" in China.
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