Remote Parking Shift Control With Pre-Applied Parking Brake
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Solution Overview
Problem
Conventional parking support devices lack measures to safely manage vehicle braking during remote parking control, particularly when abnormalities occur in the braking system, leading to potential unintended movement due to gradients or creep phenomena, compromising safety.
Innovation Solution
The parking support device incorporates a parking brake system that applies braking force to the wheels before switching shift positions, ensuring the vehicle is braked when abnormalities occur in the foot brake system, especially on gradients, thereby preventing unintended movement and ensuring safe remote parking control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the foot brake device is used for braking during remote parking control, then normal braking function is achieved, but safety is compromised when brake abnormality occurs on gradients
Solution Approach 1:
The parking brake device is activated in advance before shifting from the forward position or reverse position to the parking position. This preliminary braking action ensures the vehicle is secured before the shift operation completes, preventing unintended movement due to gradient or creep phenomena even if foot brake abnormality occurs during the transition.
Solution Approach 2:
The system prepares a backup braking mechanism (parking brake device) that can compensate for foot brake device failure. By having the parking brake ready and available, the system cushions against the harmful effect of brake abnormality, ensuring safety is maintained during remote parking control operations.
2Adaptability or versatility
If shift position is switched during remote parking control, then parking maneuver flexibility is improved, but vehicle stability deteriorates due to potential unintended movement
Solution Approach 1:
The parking brake device is activated before the shift position changes to a position other than parking position. This preliminary action stabilizes the vehicle by applying braking force in advance, preventing unintended movement during the shift operation while still allowing flexible parking maneuvers to be executed.
3Ease of operation
If remote parking control is enabled, then driver convenience is improved, but safety control capability is reduced when brake abnormalities occur
Solution Approach 1:
The parking brake device operates automatically under control of the parking support control device when shift position changes are detected. This self-service mechanism provides safety control without requiring driver intervention, maintaining both driver convenience and safety control capability during remote parking operations.
Data Source
AI summary
A parking support device includes a parking support control device mounted on an own vehicle. The parking support control device is configured to be able to receive an operation signal in a state where the driver gets off the own vehicle, and executes parking support control such that the own vehicle moves along a movement route according to the received operation signal. The parking support control device controls the drive device and the foot brake device such that the own vehicle travels at a speed at which a shift position can be switched to a parking position. The parking support control device can execute a shift switching process during execution of the parking support control, and when a switching destination of the shift position is a position other than the parking position, the parking brake device is operated to apply braking force to the wheels and switch the shift position.