Can the human brain signal assist the car in braking?
According to foreign media reports, German researchers used the driver's brain signal for the first time to assist the car's braking, providing faster response time and providing a potential solution to the car accident caused by human error. Using EEG, the researchers attached the electrodes to the tester's scalp for "mind reading," connecting the system to a modern vehicle, which can be braked by detecting the driver's intent, which would be done under normal conditions. Brake braking is 130 milliseconds faster.
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At present, researchers are considering a technology to accommodate the real car crash test system, which can become a commercial design, of course, this design can not fully assume the early braking of the car, It will definitely be used to supplement other auxiliary brake technologies, and false alarms should be avoided, and false alarms are not only annoying but also dangerous.
Researchers use electrodes connected to the brain to control the brakes
What is the concept of 130 milliseconds in an accident? For example, driving a car at a speed of 100km/h can reduce the braking distance of 3.66 meters, which is enough to prevent accidents or avoid further accidents when the danger occurs. The new study has been published in the July 29 issue of Neuroengineering. The main study is the use of the most active part of the human brain to convert the brain response into a signal on the driving simulator. This "read-aware" approach assists in braking.
Researchers from the Berlin Institute of Technology also used the same method to read the sensory signals of the calf muscle tension, which can be obtained before the driver moves the calf to the brake pedal and brakes in advance. The researchers asked the 18 testers who participated in the experiment to sit in front of the simulator, connect a series of electrodes to their scalp, and display brain activity on a large screen.
On the simulator, the tester was asked to drive the vehicle on a section of the computer set. This section simulates the actual road conditions, with dense traffic, including sharp turns and oncoming cars . At the same time, the vehicle driven by the tester advances at a speed of 100 kilometers per hour and maintains a distance of 20 meters from the preceding vehicle. Then, at a random point in time, the vehicle in front of the driver suddenly brakes quickly and the brake light illuminates.
At this point, the tester's response was recorded by the computer, including EEG and EMG data. At the same time, for comparison, the researchers also recorded the average time spent by the tester to release the accelerator pedal and step on the brake pedal, as well as the distance between the two cars. After obtaining the initial EEG record, the researchers were able to determine which part of the brain was most active and sensitive when braking, so the detection system was further adjusted based on this situation.
In addition, a new technology is being developed recently to incorporate external lasers and sensors into this study to sense the moment when a collision event is about to occur, and to control the brake pedal at the fastest speed to get the vehicle into emergency braking. process. However, the entire system in this study still relies on a person's physiological response, but the data obtained in this experiment will benefit other collision avoidance designs.
The designer who conducted the study and the lead author of the paper, Stefan Haufe, said that in this test, the average calculation of all the data obtained in the experiment can eliminate the extreme points of the special case. The results show that in an emergency, the use of EEG and EMG for braking is 130 milliseconds faster than without this system, and the contribution of EEG to the brakes is very large, it can be said that the main It is the brain's signal that controls the braking of the early brakes.
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