According to the patent description, the system combining the sensor and the airbag can measure the distance and size of the person or object that is about to collide with the vehicle before the vehicle contacts the pedestrian, so as to determine the deployment strength or deployment speed of the external airbag. Theoretically, adults and children should need different airbags.
In addition, the patent is equipped with a mechanism to prevent pedestrians from sliding off the roof or hood once they are hit. If a pedestrian is hit, it can also be prevented from rolling under the front wheel of the car, causing secondary injuries.
As mentioned above, the protection of external pedestrians has always been discussed by major automobile brands, and it has also attracted the attention of domestic consumers in recent years. For example, in the latest C-NCAP version 20 18 crash test, pedestrian protection was also included in the test project, and a detailed experimental scheme and scoring standard were formulated for the protection of pedestrians' heads and legs, accounting for 15%.
In fact, Honda has not come up with a solution recently. As early as 1970s, Honda began to study automobile safety, and made a dummy named POLAR at 1998 as a "pedestrian" to simulate the collision test of automobiles.
Therefore, Honda has also developed a series of energy-absorbing surface covering materials, such as energy-absorbing front bumper, hood hinge collapse structure, energy-absorbing wiper shaft, energy-absorbing fender, energy-absorbing front window support part, energy-absorbing headlight, energy-absorbing hood and so on.
The example around us is Honda's Accord with a pop-up hood. According to this agreement, the living hinge is installed at the upturned end of the hood. When the vehicle speed reaches more than 25km/h and a collision occurs, if the impact force reaches the preset trigger condition, the hood will bounce up by the tappet at the hinge, so that the hood has more space to absorb energy and collapse, providing the maximum buffer space for pedestrians. Although the safety is improved, it also causes some troubles to the owner, and some false triggers will occur, resulting in higher maintenance costs in the later period.
But there are many ways to reduce pedestrian injuries by lifting the hood, such as the Accord. We know Mercedes-Benz, Lexus, Jaguar and Nissan.
When it comes to mass production of external airbags, it should be Volvo. As early as 20 13, Volvo released the V40 in Australia, and there were several sensors on its front bumper. When a collision is detected, it will detonate the U-shaped airbag under the front windshield. Airbags that can be inflated in a few milliseconds will also lift the hood, and then be released under the entire windshield and in the A-pillar area, forming a safety buffer zone. The working range of this airbag is 20-50 km/h.
Write at the end:
It must be said that as the domestic automobile market pays more and more attention to pedestrian protection, there will be more pedestrian safety solutions in the future, and it is still unknown whether the patents applied by Honda can be mass-produced. But to sum up, there are two pedestrian protection schemes on the market, one is to remove the hood, and the other is to add an external airbag. Although these two schemes are not widely used, they are effective in protecting pedestrians. We also look forward to more technologies to protect the safety of pedestrians in the future, so as to protect the lives and property of pedestrians and drivers.
author
This article comes from car home, the author of the car manufacturer, and does not represent car home's position.