A joint team of Spanish and Italian researchers has developed an innovative in-vehicle monitoring system that combines IMU and infrared laser sensor technology to study and assess the risk of neck injuries in emergency braking situations. In the experiment, the team used a low-cost IMU sensor embedded in the driver's special equipment to monitor and record the acceleration changes of the driver's head, neck and torso during emergency braking, as well as the relative position data of the head and neck during emergency braking. Through the experimental results, it is found that as the vehicle speed increases, the acceleration and displacement of the head captured by the IMU is more significant than that of the neck and torso, suggesting the relationship between acceleration and the risk of neck injury.

The experimental results show that regardless of vehicle speed, especially under high-speed emergency braking, the IMU sensor clearly shows the acceleration impact on the head and its significant displacement relative to the neck and torso, revealing the intrinsic correlation between the acceleration change and the risk of neck injury. This also proves that IMU plays a key role in assessing and preventing the risk of driver neck injuries, and is expected to drive the in-vehicle safety protection technology to a higher level of precision and intelligence, and provide support for the development of more accurate and effective safety protection programs.