Automatic Parking Brake Control for Unintended Vehicle Movement
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Solution Overview
Problem
Conventional parking brake systems in vehicles often rely on manual operation, leading to forgetfulness or misjudgment by operators, resulting in unintended movement when vehicles are parked at inclines or in situations where the braking system is not properly engaged.
Innovation Solution
A controller-based system that determines a stationary time period and automatically enables a parked function, applying a braking effort if movement is detected, using conditions such as device settings and vehicle status to ensure the vehicle remains stationary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual parking brake operation is used, then the system is simple and easy to operate, but operator forgetfulness or misjudgment causes unintended vehicle movement
Solution Approach 1:
The parking brake system automatically monitors vehicle motion and applies braking force without operator intervention. The controller detects vehicle movement through sensor signals and autonomously activates the parking brake when motion is detected, making the system self-regulating and eliminating reliance on operator memory or judgment.
Solution Approach 2:
The system continuously monitors vehicle motion status through sensors and provides feedback to the controller. When the controller receives a signal indicating vehicle movement, it automatically responds by applying the parking brake, creating a closed-loop control system that ensures reliable prevention of unintended movement.
2Reliability
If automatic parking brake engagement is implemented, then operator forgetfulness is eliminated, but the system complexity increases
Solution Approach 1:
The patent replaces manual mechanical operation of the parking brake with an automated control system. The controller, equipped with motion sensors, electronically monitors and controls the parking brake engagement, substituting human mechanical action with an automated electromechanical system that enhances reliability.
3Reliability
If the parking brake is always enabled, then vehicle movement is always prevented, but the vehicle cannot move when needed
Solution Approach 1:
The parking brake system dynamically adjusts its state based on real-time vehicle motion conditions. The controller continuously monitors motion sensors and automatically transitions the parking brake between engaged and disengaged states, making the system adaptive rather than static, thereby preventing unintended movement while allowing intentional vehicle motion.
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
The system effectively prevents unintended vehicle movement by automatically engaging the parking brake when the vehicle is stationary for a designated time and detects movement, ensuring safety and reliability even when operators are not present.
Implementation Method 1
Braking systems may use friction between two surfaces to slow or stop a vehicle system
Implementation Method 2
dynamic braking systems and regenerative braking systems use electrodynamics to decrease the speed of a vehicle system
Implementation Method 3
dynamic braking systems and regenerative braking systems use electrodynamics to decrease the speed of a vehicle system
Data Source
AI summary
Method and system may be configured to determine a stationary time period during which a vehicle has remained stationary. The method and system may be further configured to enable a parked function of the vehicle in response to determining that the stationary time period exceeds a designated threshold. While the parked function is enabled, the vehicle applies a braking effort to the vehicle in response to detecting movement of the vehicle.