Autonomous Emergency Steering System
- Published: Nissan Motor Corporation, 2017
- Authors: Nissan Motor Corporation
- Date Added: 21 Aug 2017
- Last Update: 21 Aug 2017
Informative website to explain the system to the reader
When there is an impending collision, a driver may not react fast enough to avoid it. In such a scenario, the Autonomous Emergency Steering System can apply emergency braking when it determines that an accident is unavoidable, helping the driver to avoid a potential collision.
When the system detects the risk of collision with an obstacle in front that cannot be avoided by braking only, it determines a direction without an obstacle (an escape zone). It then automatically steers the vehicle to help avoid a collision.
If the system detects the risk of a frontal collision, the Electronic Control Unit (ECU) calculates the optimum collision avoidance response. When there is time, it warns the driver audibly and visually through a warning sound and light.
After releasing the warning, if the system determines that a collision is imminent, it automatically engages the emergency brake. However, when a collision cannot be avoided through braking, steering manoeuvres are required.
The ECU features software that can identify the vehicle’s lane of travel, speed and the location of the vehicle’s surroundings. Using precise measuring devices, it computes various data supplied in real-time, such as imagery from the camera, and information sent by the radar sensor regarding the number of oncoming vehicles and their path of travel.
In this way, not only can the system measure the speed and distance of surrounding objects, it is able to understand quickly the likely results that would arise from certain steering inputs.
Autonomous Steering, Collision Avoidance
This offers a good insight into technology which will soon be available to many vehicles on the road. A similar system has already been deployed by Tesla, however at this current stage, the technology is not widespread.