Autonomous Driving State Switching for Temporary Driver Intervention
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Solution Overview
Problem
Existing autonomous driving vehicle systems burden drivers with frequent state switching requirements when temporarily intervening in autonomous driving mode, leading to driver fatigue and inconvenience.
Innovation Solution
An autonomous driving vehicle system that includes a peripheral information detection unit, a traveling plan generation unit, and a driving state switching unit, which dynamically switches between autonomous, cooperative, and manual driving states based on operation amounts and duration counts, allowing for seamless transitions and reduced driver intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the driver operates a switch to intervene in autonomous driving mode, then the vehicle can respond to driver intentions, but the driver feels burdened due to frequent switching operations
Solution Approach 1:
The system automatically detects driver intervention intentions through operation amount and duration count, and autonomously switches driving states without requiring driver operation of switches. The ECU 10 self-manages the state transitions based on detected operational parameters, eliminating the burden of manual switching while preserving autonomous driving functionality.
Solution Approach 2:
The system continuously monitors driver operations (steering angle, accelerator depression, brake application) and uses this feedback to dynamically adjust driving states. The ECU 10 compares operation amounts against threshold values and adjusts the autonomous/cooperative/manual driving state accordingly, creating a closed-loop system that responds to driver intentions without requiring explicit switching commands.
2Ease of operation
If the system requires manual switch operation for state transitions, then the driver has direct control, but the switching process becomes complex and inconvenient
Solution Approach 1:
The patent replaces the mechanical switch-operating system with an electronic detection and control system. Instead of requiring physical switch operations, the ECU 10 detects driver intentions through sensors measuring operational parameters (steering angle, accelerator position, brake pressure) and automatically executes state transitions through electronic control signals to the driving operation unit.
Solution Approach 2:
The system introduces an intermediary layer (the ECU 10 and its driving state switching unit 16) between the driver's operational inputs and the vehicle's driving state changes. This intermediary automatically interprets operation amounts and duration counts, determines appropriate state transitions based on threshold comparisons, and executes the transitions without requiring direct driver interaction with switching mechanisms.
3Adaptability or versatility
If the driver temporarily intervenes in autonomous driving, then the vehicle can handle unexpected situations, but the driver must manually switch states after intervention
Solution Approach 1:
The system performs preliminary detection of driver intervention intentions by monitoring operational parameters before a full state transition is required. The ECU 10 continuously measures operation amounts and duration counts, and when threshold values are exceeded, it proactively initiates state transitions to cooperative or manual driving modes, preventing the need for post-intervention switching operations.
Solution Approach 2:
The system maintains continuous monitoring of driver operations throughout autonomous driving mode, ensuring that intervention intentions are detected without interruption. This continuous detection enables seamless state transitions during and after temporary interventions, eliminating gaps or delays where the driver would otherwise need to manually switch states after completing an intervention.
Data Source
AI summary
A system includes an acquisition unit that acquires an operation amount or a duration count, and a switching unit that switches a driving state. The switching unit switches the driving state to the cooperative driving state when the operation amount is equal to or greater than an intervention threshold and less than a start threshold or the duration count is equal to or greater than a first threshold and less than a second threshold during the autonomous driving state, switches the driving state to the autonomous driving state when the operation amount is less than the intervention threshold or the duration count is less than the first threshold during the cooperative driving state, and switches the driving state to the manual driving state when the operation amount is equal to or greater than the start threshold or the duration count is equal to or greater than the second threshold.