Vehicle Safety System Steering Angle Sensor Evasive Maneuver Warning
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Solution Overview
Problem
In situations where a driver notices an obstacle on the road and performs an evasive maneuver, other drivers behind them may not have enough time to react due to distance, weather, or other factors, potentially leading to accidents.
Innovation Solution
A vehicle safety system mounted on an ego vehicle, comprising a main control unit and a steering angle sensor, which detects steering wheel movements and determines ego vehicle velocity. If the angular velocity of a steering wheel movement exceeds a threshold, the system issues an initial warning and may issue different types of warnings based on subsequent steering wheel movements, using warning devices such as lights, audio, or communication with other vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a driver performs an evasive maneuver to avoid an obstacle, then the driver can avoid the obstacle, but other drivers behind may not have enough time to react and may cause accidents
Solution Approach 1:
The system performs preliminary action by detecting steering wheel movements that indicate an evasive maneuver and issuing warnings to following vehicles before the maneuver is completed. The steering angle sensor detects rotational direction and angular velocity, and the main control unit determines when evasive maneuvers are occurring, triggering warning devices (lights, audio) and V2V communications in advance to alert following drivers, giving them time to react before the obstacle is avoided.
2Reliability
If the system issues warnings to alert other vehicles, then following drivers can take precautionary actions, but the system complexity increases
Solution Approach 1:
The system achieves multi-functionality by using a single main control unit that integrates multiple functions: detecting steering angle via sensor, determining ego vehicle velocity, analyzing steering patterns to identify evasive maneuvers, controlling multiple types of warning devices (lights, audio), and managing V2V communications. This universal approach allows one component to perform diverse safety functions, reducing overall system complexity while improving reliability.
Solution Approach 2:
The system merges multiple warning methods into a unified warning system. The main control unit combines visual warnings (light emission), audio warnings, and wireless V2V communications into a single integrated system that can be controlled through one control unit, simplifying the architecture while providing multiple channels for alerting following drivers.
3Reliability
If the system uses multiple warning methods (lights, audio, communication), then the effectiveness of alerting other drivers improves, but the energy consumption increases
Solution Approach 1:
The system applies dynamics by making the warning device activation conditional and adaptive. The main control unit dynamically determines which warning methods to activate based on real-time analysis of steering wheel movements and vehicle context. Not all warning devices are activated simultaneously in all situations - the system adapts the warning intensity and type to the specific evasive maneuver detected, optimizing energy consumption while maintaining effectiveness.
Solution Approach 2:
The system uses feedback by continuously monitoring steering angle and velocity through the steering angle sensor, analyzing the detected patterns to determine when evasive maneuvers occur, and then activating appropriate warning devices. The system receives feedback from the steering sensor and adjusts warning device activation accordingly, creating a closed-loop system that optimizes energy use based on actual driving conditions and maneuver characteristics.
Data Source
Figure 1
Figure 2~3B
Figure 4~5
AI summary
The present disclosure relates to a vehicle safety system (1) adapted to be mounted to an ego vehicle (9), where the vehicle safety system (1) comprises a main control unit (2) and a steering angle sensor (3) connected to the main control unit (2). The steering angle sensor (3) is adapted to detect the rotational direction (ω1, ω2) and angular velocity (v1, v2) of steering wheel movements (4). The main control unit (2) is adapted to determine an ego velocity (ve) of the ego vehicle (9), and to determine if a detected first angular velocity (v1) of a first steering wheel movement (m1) in a first rotational direction (ω1) exceeds a first threshold (th1) when the ego velocity (ve) exceeds an ego velocity threshold (vth). If that is the case, the main control unit (2) is adapted to control at least one warning device (5, 6) to issue a warning (w1, w2, w3).