Autonomous Motorcycle Braking With Rider Readiness Test
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Solution Overview
Problem
Two-wheeled motor vehicles face challenges in autonomous braking, particularly when riders are distracted, as they may lose control during emergency braking, necessitating a method to assess rider readiness and adjust braking intensity accordingly.
Innovation Solution
A method utilizing a surround sensor system to detect the necessity of vehicle deceleration, performing a test braking action, and assessing rider readiness through various sensors to adjust the timing and intensity of autonomous braking, ensuring the braking is rider-independent and adaptive to the rider's state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If autonomous braking is initiated without rider readiness assessment, then emergency braking response time is reduced, but rider control and safety are compromised
Solution Approach 1:
The system performs a preliminary test braking action before the main autonomous braking maneuver to assess rider readiness. This preliminary action allows the system to evaluate whether the rider is physically prepared for emergency braking by detecting rider movements and reactions during the test phase, thereby resolving the contradiction between rapid response and rider safety.
Solution Approach 2:
The system continuously monitors rider state through sensors during the test braking action and uses this feedback to determine whether to proceed with full autonomous braking. The feedback mechanism assesses rider readiness variables such as body position, hand grip, and overall control status, allowing the system to adapt the braking execution based on real-time rider condition.
2Reliability
If a test braking action is performed before autonomous braking, then rider readiness can be assessed, but the overall braking time is increased
Solution Approach 1:
The braking process is divided into periodic phases: a brief test braking action followed by immediate evaluation, and if necessary, a second braking phase. This periodic structure allows the system to quickly assess rider readiness through the test phase and transition to the main braking action without excessive delay, balancing thorough assessment with time efficiency.
Solution Approach 2:
The system dynamically adjusts the braking strategy based on rider readiness assessment results. If the rider is deemed ready, the system proceeds directly to full autonomous braking. If not ready, the system modifies the braking characteristics or provides additional warnings, creating a dynamic response that optimizes both safety and response time based on real-time conditions.
3Reliability
If braking intensity is reduced for distracted riders, then rider safety is improved, but braking effectiveness in emergency situations is compromised
Solution Approach 1:
The braking system dynamically adjusts braking force based on assessed rider readiness. For riders determined to be ready, full braking force is applied. For distracted or unready riders, the system modifies braking characteristics to be less intense, reducing the risk of rider injury while still providing a corrective stimulus to alert the rider to the danger.
Solution Approach 2:
The system changes braking parameters such as deceleration rate, jerk, and force application based on rider state. By adjusting these parameters dynamically according to rider readiness assessment, the system optimizes the balance between providing sufficient braking force for safety and avoiding excessive force that could injure an unprepared rider.
Data Source
AI summary
A method for carrying out autonomous braking in a two-wheeled motor vehicle, where the necessity of vehicle deceleration is detected with the aid of a surround sensor system. When vehicle deceleration is necessary, prior to its execution, a test braking action independent of a rider and of a predefined temporal length is carried out. During or after the execution of the test braking action, a rider readiness variable characterizing the readiness of the rider to master the vehicle deceleration detected as necessary is ascertained. After completion of the test braking action, the vehicle deceleration is initiated, the time characteristic of the vehicle deceleration being a function of the rider readiness variable.