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Cars with active braking function are actually divided into different categorie
This entry was posted on May 29, 2021.
Today, I would like to share with you, how big is the difference between the active brakes of expensive models and the active brakes of cost-effective models, and what are the active braking technologies of various brands? What is the impact on driving? Follow the editor to learn.
The mainstream solution of active braking technology. Generally speaking, the technology that everyone uses is to install a millimeter wave radar in the front of the car, and then at the same time have a camera in the inner rearview mirror. Through the cooperation of these two devices, Realize the role of perception and detection of dangerous road conditions ahead. So that the vehicle can effectively realize the role of active braking.
In addition, you will find that all models with millimeter-wave radar on the front of the car, such as Volvo, Audi, Honda Accord, always hang a piece of black on the front of the car, this is the millimeter-wave radar. But this millimeter wave radar is actually very expensive. If it is damaged by an accident, the radar alone will cost at least tens of thousands of yuan. So in order to skip the problem of high cost caused by radar. Nissan has come up with a unique solution.
They and the National Aeronautics and Space Administration of the United States, relying on such top technology companies, jointly developed a set of ultra-high-speed visual recognition system. The name sounds very awkward, but in fact it is only the principle of recognition through the camera in the inner rearview mirror. In fact, it is the same as the face recognition technology in the mobile phone or camera, except that the face recognition is replaced by the face recognition technology. The identification of various road conditions and the identification of various dangerous situations among them, in this way, its cost is greatly reduced.
According to official data, the active brake equipped with this set of technology is called FEB, which is the pre-collision warning system. Vehicles such as the new Sylphy and Bluebird are equipped with this system. The speed range it can adapt to is quite good, and it can work from ten kilometers to eighty kilometers. But the editor is most concerned about the use of cameras to analyze and identify rain and snow weather. This kind of camera is obviously affected by the environment at night, and whether it can achieve effective identification is not mentioned. Therefore, whether this ultra-high-speed visual recognition system is really useful or not can be known after a test drive.
Another model that does not use millimeter-wave radar solutions is Ford's models. Their technology is called ACS low-speed safe driving system. In fact, 7 is exactly the same as Volvo's city safety system. Complex and more costly laser sensors. Take the latest Fox as an example. Its system can start and increase below 50 kilometers per hour. The original Fox system is below 30 kilometers per hour. In addition, this system officially only claims that it can recognize obstacles in front of the vehicle and avoid rear-end collisions, but it does not mention whether it can recognize pedestrians, and there is no clear regulation.
Another manufacturer uses a very traditional solution, that is Honda's CMBA, also known as the collision mitigation braking system, which is a standard millimeter-wave radar plus an internal rearview mirror camera system. In fact, this system itself is still very superior. It has a very powerful pedestrian recognition function. At a speed of about 20 kilometers per hour, it can avoid collisions through fully autonomous braking. It can be used on the expressway in the case of rain at night. Come and experience this set of CMBS system, which can also identify and avoid dangerous situations well.
Therefore, the editor believes that from the perspective of active braking technology of so many cost-effective models, Honda's traditional solution is rather mature and more reliable. Let’s take a look at the performance of high-end brands. The first thing to talk about is the new generation of Mercedes-Benz E-Class. This car represents the highest level of Mercedes-Benz’s high-tech active safety. Pedestrian behavior recognition can only be regarded as the first level for it. The functions of the vehicle, such as the recognition of stationary objects, the recognition of vehicles and pedestrians crossing the intersection, are all easy to talk about. It can be said that the hazards in all front directions of this vehicle can be effectively identified and resolved.
