Lane Change Control with Sensor Normalcy Determination
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Solution Overview
Problem
Existing vehicle lane change control systems do not consider the normalcy of surrounding detection sensors, which can lead to inadequate control of lane changes when these sensors malfunction.
Innovation Solution
A traveling assist device with a recognition unit, sensor determination unit, and control decision unit that assesses the functionality of surrounding detection sensors, such as cameras and millimeter-wave radars, to determine if they are normal or abnormal, and adjusts lane change control accordingly, ensuring safe and appropriate lane changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the traveling assist device controls lane change based on detection information from surrounding detection sensors, then the lane change control function is achieved, but the system cannot detect sensor abnormalities which leads to inadequate control when sensors malfunction
Solution Approach 1:
The sensor determination unit performs preliminary detection of sensor abnormalities before the lane change control is executed. By checking whether surrounding detection sensors are functioning normally in advance, the system can prevent inadequate control actions when sensors malfunction, thereby improving reliability without significantly increasing overall system complexity.
Solution Approach 2:
The sensor determination unit acts as an intermediary between the recognition unit and the traveling control unit. It receives detection information from surrounding detection sensors, determines sensor normalcy, and provides this determination result to the traveling control unit, which then decides whether to execute lane change control. This intermediary layer ensures reliable control while maintaining a modular system structure.
2Reliability
If the system terminates lane change control when sensor abnormalities are detected, then safety is improved, but the lane change process cannot be completed which reduces productivity
Solution Approach 1:
The traveling control unit dynamically adjusts the lane change control strategy based on the sensor determination result and the current lane change progress. When a sensor abnormality is detected, the unit evaluates whether the vehicle has already entered the adjacent lane and makes real-time decisions to either terminate control (if not entered) or continue control with modified parameters (if already entered). This dynamic adaptation ensures both safety and operational efficiency.
Solution Approach 2:
When sensor abnormalities are detected after the vehicle has entered the adjacent lane, the traveling control unit continues the lane change control by changing operational parameters such as increasing vehicle velocity or increasing steering angle to complete the lane change rapidly and safely. This parameter adjustment allows the system to maintain productivity while ensuring safety through active monitoring and control.
Data Source
AI summary
A traveling assist device includes a recognition unit, a traveling control unit, a sensor determination unit, and a control decision unit. The sensor determination unit determines whether surrounding detection sensors are normal or not. The control decision unit decides whether the traveling control unit controls a lane change based on the result of determination by the sensor determination unit.