Autonomous Emergency Braking Radar Mounting Angle Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Radar sensors in autonomous emergency braking systems can become misaligned due to vehicle travel or other causes, leading to erroneous mounting angles and reduced reliability of information output, resulting in potential malfunction of the autonomous emergency braking system.
Innovation Solution
An autonomous emergency braking system that includes an ECU to detect the mounting position and angle of the radar sensor, prohibiting unnecessary braking when the sensor is found to be misaligned, using a combination of radar, yaw rate, and wheel speed sensors, as well as a camera module to verify object detection data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the radar sensor is mounted in the vehicle to enable autonomous emergency braking, then the system can detect objects and perform emergency braking, but the radar sensor may become misaligned due to vehicle travel or shocks, leading to erroneous mounting angles and reduced reliability
Solution Approach 1:
The system performs preliminary detection of the radar sensor's mounting position and angle before using the sensor data for emergency braking decisions. The ECU detects whether the radar sensor is mounted within a normal range and prohibits autonomous emergency braking when the mounting position is abnormal, preventing unreliable data from causing false braking actions.
Solution Approach 2:
The system continuously monitors the radar sensor's mounting status by detecting the position and angle of the sensor. This feedback mechanism allows the ECU to identify when the sensor has become misaligned due to vehicle travel or shocks and to take appropriate action by prohibiting emergency braking functionality when misalignment is detected.
2Reliability
If the radar sensor mounting angle is not monitored, then the system structure remains simple, but erroneous mounting angles cause low reliability of output information and potential malfunction
Solution Approach 1:
The ECU performs multiple functions: it not only controls the autonomous emergency braking but also detects the radar sensor's mounting position and angle. By integrating the mounting detection function into the existing ECU, the system avoids adding separate complex monitoring devices while ensuring reliable operation.
Solution Approach 2:
The system uses its own existing resources (ECU processing capability) to monitor the radar sensor mounting status. The ECU analyzes object detection information from the radar sensor to determine if the mounting angle is within the normal range, allowing the system to self-diagnose mounting issues without external monitoring equipment.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Prevents unnecessary autonomous emergency braking by accurately determining the mounting position and angle of the radar sensor, ensuring reliable information input and maintaining system performance.
Implementation Method 1
a radar sensor for detecting the object by transmitting a radio wave and receiving a wave reflected from the object in front of the vehicle
Data Source
AI summary
Disclosed herein are an autonomous emergency braking system and a method of controlling the same, capable of autonomously performing emergency braking using information detected by a radar sensor. The autonomous emergency braking system includes a radar sensor and an ECU. The radar sensor transmits a radio wave and receives a wave reflected from an object in front of a vehicle, so as to detect the object in front of the vehicle. The ECU receives object detection information from the radar sensor, and stops or puts off autonomous emergency braking when the number of times the object is detected within a predetermined distance is equal to or greater than a predetermined number of times, based on the received object detection information.