In recent years, the industry has focused on“ Whether the more automotive electronic safety products are used on the vehicle, the better”, There has always been controversy. Some insiders believe that as long as economic conditions permit, the more electronic technologies used in cars should be the better. There are also some experts who disagree with this view and believe that automotive electronic safety technology should be practical and not blindly developed. The reporter interviewed two experts who expressed different views on this topic.
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Li Shuchong, General Manager of CCID Semiconductor Industry Research Center
It is impossible to equip too many automobile electronic safety systems
Li Shuchong, General Manager of CCID Semiconductor Industry Research Center, said that in addition to the appearance, price, and power of cars becoming the main factors for consumers to consider when purchasing a car, the safety of cars is also receiving increasing attention from consumers, and some popular automotive electronic products used to improve vehicle safety have also been favored by consumers. From the popular saying “Does this vehicle have an ESP (Electronic Stability Control System)?”, we can see that many people regard vehicles equipped with electronic safety systems such as ESP and DSC (Dynamic Stability Control System) as products with high technical content and high requirements. Safety elements.
Li Shuchong believes that there are sufficient reasons for people’s pursuit of safety. In addition to being a means of transportation, cars also have many dangerous factors due to their high speed, complex road conditions and different driver status. Many dangerous factors can be fatal, even threatening the life safety of others.
At present, vehicle safety systems can be roughly divided into active safety systems and passive safety systems.
The active safety system is mainly used to prevent accidents before they happen by improving the driving stability of the vehicle, or to warn the driver before the danger comes. Chassis control systems such as ABS, ESP, TCS and EBD are active safety systems. In fact, these electronic products collect various vehicle states and driving information through sensors, control the vehicle through the control module composed of chips, improve the safety and stability of the vehicle, and avoid some errors that the driver cannot control. In the early stage of the development of the automobile industry, the automobile safety largely depends on driving technology, and the active safety system can intervene in the hidden dangers of accidents before the occurrence of dangers to minimize the risks.https://www.stoneitech.com/
Passive safety system is a measure to reduce accident damage. It can improve the safety factor after the accident, and protect the driver and passengers in case of danger, as well as the people affected by the accident outside the vehicle. Passive safety systems mainly include safety belts, airbags, etc. From the perspective of the development of domestic cars, the airbag and anti-lock braking system have basically become the standard configuration of cars. How to ensure that the safety system is more accurate and reliable has become an urgent concern of consumers. How to avoid accidents is obviously of more positive significance. Therefore, the active safety system has increasingly attracted attention and become a new favorite of the market.
Li Shuchong said that during the development of China’s automotive technology, people’s pursuit of safety has never stopped, and providing various safety electronic systems has become the direction of future automotive development. Among them, intelligent systems can be said to be one of the future development trends. For example, an intelligent safety system can determine whether the driver is tired by detecting information such as the driver’s sitting posture, posture, and number of blinks, and then provide safety prompts to the driver based on the judgment results.
The introduction of various safety systems is mainly due to the limited reaction ability of people and the probability of errors in the reaction process. Electronic products rely on the control unit composed of chips to detect data and data that many people can not detect, and quickly adjust and control the vehicle based on the detection data, which is beyond human power. Therefore, it can be said that the automobile electronic safety system can improve the automobile safety without human intervention.
Because each safety system has its role, it can improve the safety of vehicles under certain circumstances. Therefore, in theory, the more electronic safety systems loaded on a car, the better. Although driving safety still largely depends on the driver, the electronic safety system of a vehicle can improve the safety and stability of the vehicle under certain conditions. In addition, it can also reduce accidental injuries to a certain extent. Therefore, security systems are receiving increasing attention from consumers.
Li Shuchong said that as a product with high requirements for safety and stability, the launch of each electronic product requires a lot of testing to prevent the increase of vehicle instability factors. Therefore, currently assembled electronic security systems have their own functions. This can be seen from the upgrade of some foreign automotive electronic security systems to standard vehicle configurations. Since the 1980s, some countries in Europe and the United States have adopted airbag as a standard configuration for mid-range vehicles. Since 2002, most countries in the world have used safety belts and airbags together as standard equipment.
For consumers, although they all want to buy automobile products equipped with as many electronic security systems as possible, it is accompanied by an increase in automobile costs. Why do many car dealers take electronic security systems as their selling points? First of all, good safety is a prominent feature of the car. Secondly, dealers should also explain the reasons for car pricing from the side, because the more safety systems fitted, the higher the price is.
In the past decade, China’s auto market has expanded rapidly. With the upgrading of automobile products, more and more intelligent safety systems are equipped. When the driver drives the car normally, some electronic safety products cannot be used, but when the danger occurs, their role will be shown. Because many accidents and accidents directly threaten people’s life safety, the necessity of equipping some electronic products with low utilization rate is more prominent.
Li Shuchong believes that with the development of automobile technology, it can be said that the number of electronic safety systems equipped on cars can not be excessive. For example, the regulations issued by the National Highway Safety Administration of the United States in April 2005 require that all new passenger cars and light vehicles sold in the United States should be equipped with Tire Pressure Monitoring System (TPMS) by September 2007. China also has similar regulations on the equipment of automobile electronic products such as ABS.
Li Shuchong said that consumers will choose automobile products according to their own preferences when buying cars, combined with various factors such as economic strength, and safety, as a basic demand of consumers when choosing cars, should be well met. Low price should not be synonymous with insecurity. All levels of automotive products should be increased as much as possible within a certain cost range to further improve the safety of automobiles.
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Wang Hongyan, professor and doctoral supervisor of Tongji University School of Automobile
The electronic safety system of the car is enough
Wang Hongyan, professor and doctoral supervisor of the School of Automotive Engineering, Tongji University, said that people have paid close attention to the safety of automobiles since the birth of automobiles. At first, people thought that the harder the car body structure is, the better. At this time, the design concept of the car is to build the car as strong as possible. After the 1980s, this design concept was broken. It is found that in many traffic accidents, solid cars are intact, while the passengers are seriously injured or even killed.
Since the 1990s, the design concept based on automobile safety has gradually shifted to people-oriented, that is, from protecting cars to protecting people. This design concept is called combining hardness and softness. “Rigidity” refers to the need to maintain sufficient rigidity of the vehicle body to withstand the dynamic and static loads of the whole vehicle, and “flexibility” refers to the need to ensure the safety of passengers as far as possible on the premise of ensuring sufficient living space for passengers. In fact, it is to allow the car body structure to undergo certain deformation and damage, reduce the impact energy borne by the passengers, so as to minimize the damage to the passengers.
With the development of automobiles, there are more and more safety devices. Especially in recent years, the automobile electronic security system has gradually armed the entire automobile. Some consulting companies have done some surveys on car buyers, and the results show that car driving safety is at the core of user requirements for cars. Most consumers believe that vehicle safety is more important than vehicle power, comfort and economy. Pay attention to car safety, not only for drivers and passengers, but also for other people on the road.
Wang Hongyan disagreed with the view that “more electronic safety systems for cars are better”. He said that the reason for road traffic safety accidents is not only the lack of car safety technology. In summary, there are four reasons.
One is human factors, that is, human factors may cause accidents. This aspect includes skill training, such as the proficiency and unfamiliar driving skills, whether they can drive correctly; Awareness training refers to whether people have a strong sense of safety, understand and consciously abide by traffic regulations.
The second factor is the car. Whether the structure of automobile safety design is reasonable, whether the safety performance is good, and whether the safety protection measures are effective.
The third is the road factor, whether the safety facilities are sound, whether the road planning is reasonable, whether the road safety signs are available, and whether the road conditions are conducive to driving.
Fourth, environmental factors, including whether the surrounding social environment and natural environmental factors affect driving.
As long as one of the four factors is uncoordinated, accidents are likely to occur. From it, we can see that the safety of the car itself accounts for only 1/4 of the total
Currently, car dealers and car manufacturers have misled some immature domestic car consumers by using the number of electronic safety systems installed in their cars as their selling point. They actually equate vehicle safety with traffic safety, overemphasizing vehicle safety performance while ignoring the other three factors, which can spread an inappropriate safety concept to car buyers. In China, cars enter families relatively late. Relatively speaking, car owners’ awareness of driving safety is not strong enough. Many people are afraid of traffic police fines to comply with traffic regulations. In addition, dealers are also greatly affected by “cheating”, resulting in an excessive reliance on automotive electronic safety systems.
Can the automobile electronic safety system really protect the safety of drivers at all times? Wang Hongyan said that of course not. For example, the ESP braking anti-slide system actually only works when steering, especially on snowy roads or wetlands. Moreover, consumers should realize that these electronic safety systems can only reduce the damage caused by accidents, and are not as supernatural as the manufacturers’ propaganda.
According to the statistics of the Ministry of Public Security, 90% of the direct and indirect causes of road traffic accidents occurred last year were human factors. The main inducement of traffic accidents on the roads in China is not technical reasons such as the active and passive safety of vehicles, but mainly caused by non-technical factors, such as drivers’ wrong driving behavior, pedestrians and other traffic participants’ weak safety awareness. So how to ensure driving safety? Wang Hongyan believes that we can start from the following three aspects. First of all, we must obey the traffic rules and drive correctly; Secondly, use the standard safety equipment in the car, for example, remember to fasten the seat belt when driving. With regard to the effectiveness of seat belts, a survey report from the German Federal Highway Administration from 1990 to 2005 shows that seat belts can reduce the degree of accident injuries by an average of 60%
Wang Hongyan stated that opposing the idea of “more electronic safety systems in cars, better” is not to deny their role in cars, but to hope that car consumers will take this issue seriously.
Wang Hongyan believes that, from a scientific perspective, not all electronic safety systems in cars must be equipped. The safety performance of German cars is relatively good, which is the result of the design based on the road conditions and the causes of traffic accidents in the country. At present, the School of Automotive Engineering of Tongji University is doing the project of “Research on Road Traffic Safety Accidents in China”. The preliminary study of road traffic safety accidents in Jiading District, Shanghai, shows that the single vehicle accidents in this area account for 3% to 5% of the total. That is because the road situation in China is relatively complex, and the expressway network is not very developed. Most roads are mixed roads with motor vehicles and non-motor vehicles, with many plane traffic and many intersections. In terms of the characteristics and forms of traffic accidents, it is different from the situation in Germany. We must take different safety measures according to the characteristics of accidents in our country, rather than blindly publicize“ The more electronic safety systems in cars, the better”.
What electronic safety systems are necessary for Chinese cars at present? Wang Hongyan believed that, from the perspective of passive safety, safety belts and airbags are necessary. In addition to the airbag for frontal collision, it is also necessary to add the airbag to protect the waist and abdomen in case of side collision. In addition, electronic safety devices should be added to protect feet and lower legs. From the aspect of active safety, ABS and auto anti-roll electronic safety system are needed to shorten the braking distance and prevent the brake from losing control.