Parking Assistant Using Straight-Ahead Travel for Space Detection
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Solution Overview
Problem
Existing parking assistant systems require elaborate environment sensor systems for precise detection of parking spaces, making them complex and inconvenient for automatic forward or reverse parking, especially in perpendicular or transverse spaces.
Innovation Solution
A method that uses a simple environment sensor system, such as ultrasonic sensors, for initial straight-ahead travel to ascertain the parking space dimensions, allowing the vehicle to automatically calculate a parking trajectory and park without the need for elaborate sensor fusion, with driver control via a remote device to initiate and monitor the process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If elaborate environment sensor systems (sensor fusion) are used for precise detection of parking spaces, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The parking process is divided into two distinct phases: a first phase where the vehicle travels straight ahead to allow simple sensors to detect the parking space gateway, and a second phase where the calculated parking trajectory is executed. This segmentation allows simple sensors to suffice in the first phase, eliminating the need for complex sensor fusion systems while maintaining adequate detection precision.
Solution Approach 2:
The vehicle performs a preliminary straight-ahead travel phase before the actual parking maneuver. During this preliminary phase, the environment sensor system detects the parking-space gateway and calculates the parking trajectory. This preliminary action enables simple sensors to gather sufficient information in advance, avoiding the need for complex real-time sensor fusion during the critical parking execution phase.
2Ease of operation
If the driver controls the vehicle into position before parking assistant activation, then ease of operation is improved, but the automation extent is reduced
Solution Approach 1:
The driver performs a preliminary positioning action by bringing the vehicle ahead of the parking space into a sensible position before activating the parking assistant. This preliminary manual positioning enables the subsequent automatic parking maneuver to proceed with simplified sensor requirements, combining driver convenience with automated execution while reducing overall system complexity.
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
Enables convenient and efficient automatic parking with reduced computational effort and sensor complexity, allowing the vehicle to park in narrow spaces with minimal driver intervention and providing feedback on obstacles, while maintaining driver control and safety.
Implementation Method 1
A method is described which uses a simple environment sensor system, such as ultrasonic sensors, for initial straight-ahead travel to ascertain the parking space dimensions
Data Source
AI summary
A motor vehicle is automatically forward or reverse parked into a perpendicular or transverse parking space. After the driver has stopped the motor vehicle, ahead of the parking space in a position that appears suitable to him/her for a direct parking procedure, has exited the motor vehicle and has started the method via a remote control, according to the disclosure the vehicle is automatically allowed to drive a short distance straight ahead. During the short distance of straight-ahead travel, the parking-space gateway is ascertained via an environment sensor system, from which a parking trajectory is calculated. At the end of the short distance of straight-ahead travel, the motor vehicle stops automatically and steers the front wheels into a position corresponding to the calculated parking trajectory.