Inertial Measurement Unit (IMU) is crucial to present and future navigation and safety systems in autonomous vehicles and advanced driver assistance systems (ADAS). IMUs collaborate with diverse perception sensors, including light detection and ranging (Lidar) cameras and radar odimetry, etc, to maintain accurate vehicle trajectory. ADAS technologies assist drivers in various aspects of their driving tasks and provide an extra layer of safety. In this article, we will discuss how an IMU-equipped ADAS system ensures safety and what developments are happening in this field.
Incorporating inertial measurement sensors with ADAS promotes safe driving in the following ways.
Adaptive cruise control (ACC).
ACC allows users to relax while driving, especially on highways, by automatically adjusting the car’s speed by matching the speed of the vehicles in front. The IMU utilised in the ACC system maintains a safe distance between vehicles by measuring the vehicle’s acceleration and deceleration. If a change in speed is encountered in the lead vehicle, inertial sensors enable the system to respond quickly, thus promoting safe and comfortable driving.
Lane departure warning (LDW).
The LDW system provides users with a stress-free parking experience in crowded garages by minimising concerns about collision-related damage to the vehicle. While driving, the LDW system ensures safety by warning drivers about leaving the marked lanes without giving proper indicators. The inertial sensors monitor the vehicle’s lateral motion and orientation and detect when the car unintentionally drifts out of its lane. Fast alerts are triggered, avoiding collisions.
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