Vehicle Stop Maintaining System with Interruptive Factor Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional vehicle stop maintaining systems either compromise driver burden reduction or suffer from unintended vehicle startups due to control abnormalities, and ongoing notifications when using electric parking brakes, which can bother drivers.
Innovation Solution
A vehicle stop maintaining system that includes a foot brake mechanism, a brake force control mechanism, and an electric parking brake mechanism, with a controller that determines interruptive factors and system failures to switch between modes, using the electric parking brake to maintain the stopped state and only notifying the driver when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the brake force control device is operated to maintain the stopped state, then the driver burden is reduced, but unintended vehicle startup may occur when control abnormality is detected
Solution Approach 1:
The notification device serves as an intermediary between the brake force control device abnormality and the driver. When control abnormality is detected, the system issues a notification to the driver, allowing the driver to make an informed decision about whether to maintain the stopped state or allow vehicle movement, thus resolving the conflict between automated stop maintenance and safety.
Solution Approach 2:
The system dynamically switches between different stop maintenance modes based on the detection of control abnormalities. When no abnormality is detected, the brake force control device maintains the stopped state. When abnormality is detected, the system transitions to a different mode where the notification device alerts the driver, allowing flexible adaptation to different operational conditions.
2Reliability
If the electric parking brake device is operated to maintain the stopped state when control abnormality is detected, then vehicle starting safety is improved, but the driver is bothered by continuous notifications
Solution Approach 1:
The system applies different notification strategies based on the specific operational context. When the electric parking brake device is operating to maintain the stopped state due to control abnormality, the notification device stops issuing notifications. This localized adjustment of notification behavior based on the current operational mode resolves the conflict between safety and driver comfort.
3Reliability
If the brake pedal is depressed again to maintain the stopped state when control abnormality is detected, then vehicle starting safety is improved, but the function of reducing driver burden is lowered
Solution Approach 1:
The system provides self-service by automatically detecting control abnormalities and issuing notifications to the driver. This eliminates the need for the driver to manually depress the brake pedal again to maintain the stopped state, as the system automatically manages the stop maintenance function while keeping the driver informed of the abnormality condition.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This system effectively maintains the vehicle's stopped state without burdening the driver and minimizes unnecessary notifications, ensuring high travel safety and operability while reflecting the driver's operational intention and engine state.
Implementation Method 1
the electric parking brake devices change a rotational motion of the electric actuator into a linear motion by the electric brake mechanism
Implementation Method 2
a brake force control mechanism having a pressurizer that increases hydraulic brake pressure to be applied to the hydraulic brake mechanisms
Data Source
AI summary
A vehicle stop maintaining system is provided, which includes a foot brake mechanism for braking vehicle wheels by applying hydraulic brake pressure according to brake pedal depression, a brake force control mechanism for braking the wheels by controlling a pressurizer, an electric parking brake mechanism for braking the wheels by operating an electric brake mechanism, and a controller comprising a processor for entering a first stop mode when a vehicle stopped state is detected. The processor executes a first determining module for determining existence of an interruptive factor, and a second determining module for determining a failure of the electric parking brake mechanism. If the interruptive factor exists, the controller executes a second stop mode. If the electric parking brake mechanism is determined as failed under the second stop mode, the controller operates a notification device for issuing a notification to a vehicle driver.