Vehicle Drive Output Restriction for Accelerator Misoperation
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Solution Overview
Problem
Existing vehicle control systems struggle to differentiate between intentional and erroneous operations of the accelerator pedal, leading to inadequate acceleration and potential safety issues, particularly for drivers prone to mistakes.
Innovation Solution
A vehicle control system that limits the driving force based on inputs to the accelerator pedal before and after the activation of the drive source, using smart keys with identification information and sensors to determine if a driver is prone to erroneous operations, and adjusts vehicle speed accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the output of the drive source is limited when the depression amount of the accelerator pedal reaches or exceeds a predetermined value, then the stability of vehicle behavior is improved, but the vehicle cannot be sufficiently accelerated when the driver intends to accelerate
Solution Approach 1:
The system performs preliminary assessment of driver behavior by analyzing accelerator pedal operations during a predetermined period before drive source activation. This preliminary action identifies drivers prone to erroneous operations, enabling the control device to selectively apply output limitation only to those drivers, thereby maintaining vehicle stability without unnecessarily restricting acceleration for competent drivers
Solution Approach 2:
The output limitation function is applied locally to specific drivers based on their individual operational characteristics rather than universally. The control device determines whether to limit output on a per-driver basis by evaluating their pre-activation pedal operations, ensuring that only drivers with erroneous operation patterns experience restricted acceleration
2Reliability
If the drive restriction is enabled based on identification information from terminal, then the safety for drivers prone to erroneous operations is improved, but the device complexity increases
Solution Approach 1:
The terminal device serves as an intermediary that stores and transmits identification information about drivers prone to erroneous operations. This intermediary approach allows the control device to access necessary safety data without directly implementing complex assessment algorithms, thereby improving safety while managing system complexity through modular architecture
Solution Approach 2:
The system implements feedback by continuously monitoring accelerator pedal operations and comparing them against stored identification information. The control device receives feedback from the operation amount sensor and uses this feedback to determine whether to apply drive restriction, creating a closed-loop control system that adapts to individual driver behavior patterns
Data Source
AI summary
A vehicle control system for controlling an output of a drive source in a vehicle includes: a drive operation member configured to receive an input regarding a driving force for the vehicle from a driver of the vehicle; and a control device configured to cause the drive source to output a driving force corresponding to the input to the drive operation member. When the control device determines that a predetermined enabling condition is satisfied, the control device enables drive restriction for limiting the output of the drive source. The enabling condition includes an input condition which is based on the input to the drive operation member acquired during a predetermined period before start of the drive source.