Parking Support Device Step Detection and Control
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Solution Overview
Problem
Existing parking support technologies fail to effectively manage vehicle movement over road steps, leading to significant noise and user concern during automatic parking, as they do not adequately account for the presence and type of wheels interacting with the step.
Innovation Solution
A parking support device equipped with a step detection system that stops and restarts vehicle movement, determining whether the contacting wheel is a drive wheel, and utilizing a communication terminal to send control signals for controlled braking and power management, ensuring proper wheel engagement and reduced noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the vehicle automatically rides over a step during parking, then the parking process continues without interruption, but the vehicle generates large noise and sways causing user concern
Solution Approach 1:
The system detects the step in advance before the vehicle reaches it, and proactively issues a warning to the user and stops the vehicle before the wheel contacts the step. This preliminary action prevents the harmful noise and vibration from occurring in the first place, while still allowing the parking process to resume after user confirmation.
Solution Approach 2:
The system performs step detection and user warning actions before the vehicle actually encounters the step. By detecting the step ahead of time and preparing the user in advance, the system allows the user to mentally prepare and the vehicle to stop at an optimal position, reducing the harmful effects when the vehicle eventually rides over the step.
2Object-affected harmful factors
If the vehicle stops before a step and waits for user input, then user concern is reduced, but the parking process time increases
Solution Approach 1:
The system rapidly detects the step, issues the warning, and stops the vehicle in a streamlined sequence without unnecessary delays. When the user responds with confirmation, the vehicle immediately resumes movement and completes the parking process quickly, minimizing the total time loss while still providing the user warning benefit.
3Reliability
If the vehicle moves backward by a specified distance before a non-drive wheel contacts the step, then the wheel engagement is improved, but the complexity of controlling power and braking increases
Solution Approach 1:
The system dynamically adjusts the vehicle's movement based on real-time conditions: it detects whether the wheel contacting the step is a drive wheel or non-drive wheel, and automatically selects the appropriate control strategy. For non-drive wheels, it implements the backward movement sequence; for drive wheels, it uses direct power application. This dynamic adaptation simplifies the overall control logic while improving reliability.
Data Source
AI summary
A parking support device of the present invention, which is configured to move a vehicle in a longitudinal direction and stop the vehicle in a specified space by using a communication terminal to send a control signal to the vehicle, comprises a step detection part which is configured to detect presence/absence of a step in a moving direction of the vehicle, a moving stop part which is configured to stop moving of the vehicle in a case where presence of the step is detected by the step detection part, and a moving restart part which is configured to restart the moving of the vehicle so as to ride over the step in a case where the control signal from the communication terminal is received after the moving of the vehicle is stopped by the moving stop part.