Past and present of car test dummyRelease time: 2016-02-15 14:05
♦ What is the collision dummy doing?
Everyone likes to watch action movies. Many of the exciting shots in it are not done by the stars themselves, but by the substitutes to complete these dangerous actions. There are also such a group of substitutes in the research and development of automobiles. They replace humans in various safety tests At the scene, as everyone valued safety, they also moved from stand-ins to the front desk and became the protagonists of security experiments.
☆ How the dummy was born ☆
In 1869, a lady named Mary died after being dumped from a steam car, becoming the first victim of a motor vehicle. Since the birth of the car, the number of deaths caused by the car has exceeded 20 million, so whether it is a car Inside occupants, or pedestrian safety outside the car, have become a problem for automotive engineers.
So human testing began to be introduced into the test ... and it was real people at the beginning, yes, it's not just living people, but corpses. Although they have obtained a lot of useful data, they face huge ethical risks and can be easily challenged. And these test remains are usually elderly, and it is not easy to simulate most accidents (especially young adults). Some researchers even went to trials for this purpose, but this was obviously a bit crazy and not a long-term solution.
You ca n’t use living or dead people. You can only use animals, such as chimpanzees. When it comes to the steering wheel ’s protection, GM even uses a second brother (pigs are close to human physiology in many ways. Many biological experiments Both use it). But animal experiments also face difficult problems to repeat, and protests from animal protectors, so animal experiments have basically disappeared since the early 1990s and replaced by dummy.
The history of dummies is not short at all. In the 1950s, aviation companies such as Grumman began to develop dummies for testing in aviation seats. After mass production of dummies, they began to be used in automotive safety research. This is the VIP-50 series that Alderson developed for GM and Ford (Is this the worst VIP?). Subsequently, the dummy became one of the important means of automobile safety research.
Q1: What is the difference between a crash test dummy and a plastic model in a clothing store?
A: There are sensors inside, the material and size are simulated real people, and there are men and women.
Since the dummy used in the safety crash test is to simulate the state of a real person, the material and weight must be as close as possible to the human body. At the same time, in order to detect the damage to the dummy, multiple sensors are also arranged inside-usually you can Collect data from dozens of locations. With the advancement of electronics and materials technology, the simulation degree of dummy is getting higher and higher, and the inspection effect is better.
Q2: Is the collision dummy expensive?
A: The price is expensive, and currently China cannot produce it
Although it is a dummy, due to the high requirements, the price is also quite expensive. The average price of the dummy used by IIHS is about 100,000 US dollars, and some specially made dummy in Volvo Security Labs have reached 1.5 million Swedish crowns (combined) RMB 1.1 million). The dummy usually needs to re-calibrate the sensor after using it a few times, and after all, it has experienced a violent impact and cannot be used after a certain number of times, so the dummy is also a significant expense in the crash test.
At present, countries mainly use Hybrid III dummy from the United States, and some big brands can also develop safety dummy by themselves, such as Honda's POLAR series. However, China still does not have the production capacity to test dummy. It can be seen that the core technologies of all aspects of Chinese cars have yet to be accumulated.
Q3: Is there any other way to protect the researchers than to meet the real dummy?
A: Virtual dummy can also help a lot
In addition to dummies, including various car manufacturers and crash test institutions, digital models are introduced to study automotive structural safety, that is, there are "virtual dummies". The mutual verification of virtual dummy and real tests, coupled with the update of regulations, has promoted the improvement of passive safety of automobiles.
Conclusion : The crash test is like an automobile safety test, and the dummy is also one of the examiners. It performs dangerous tests instead of humans, and also has a very high technical content. Everyone can drive more and more safe cars, and I really appreciate these fearless dummies and the car engineers who work silently behind them.
More about car test dummy: http://airulm17.com/productlist/list-5-1.html
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