Diagonal Parking Space Detection via Slope Calculation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing automatic parking systems cannot effectively detect and park in diagonal parking spaces with uncertain angles due to limitations in sensor ranging distance and fixed mounting positions, which restricts their ability to correct for inclination angles specific to diagonal spaces.
Innovation Solution
A method and system that determine a target diagonal parking space by calculating its slope and width using detected reference points and sensor ranging values, allowing for automatic parking route planning and execution, even with variable-angle spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed mounting position of ultrasonic sensors is used, then the sensor mounting is simple and stable, but the sensor cannot effectively detect diagonal parking spaces with uncertain angles
Solution Approach 1:
The system dynamically adjusts the sensor scanning angle and range based on the detected parking space angle. The control unit processes sensor data to determine the parking space orientation and modifies the sensor detection parameters in real-time, enabling the fixed-mounted sensor to adapt to various diagonal parking angles without physical repositioning.
Solution Approach 2:
The system changes the detection parameters (scanning angle, ranging distance) of the ultrasonic sensor based on the identified parking space characteristics. By adjusting these parameters dynamically, the system overcomes the limitation of fixed sensor mounting and enables effective detection of diagonal parking spaces with different angles.
2Length of stationary object
If the sensor ranging distance is extended to detect diagonal parking spaces, then the detection range increases, but the system complexity and cost increase
Solution Approach 1:
The detection process is segmented into multiple stages: initial scanning phase, angle determination phase, and precise measurement phase. In each stage, the sensor operates at different ranging distances appropriate to that phase, avoiding the need for continuously extended ranging distance while achieving complete detection of diagonal parking spaces.
Solution Approach 2:
The system uses partial action by activating sensor detection only when parking space candidates are identified in diagonal zones, rather than continuously operating at maximum ranging distance. This reduces overall system complexity while maintaining the capability to detect diagonal parking spaces when needed.
3Measurement precision
If a rotatable ultrasonic sensor mounting method is used, then the parking space width can be detected by position-adjustable ultrasonic wave, but the mounting cost increases and external shape and structural stability are influenced
Solution Approach 1:
The system replaces the mechanical rotatable mounting solution with an electronic control approach. Multiple fixed-mounted ultrasonic sensors are strategically positioned, and their detection data is processed by a control unit to calculate parking space dimensions. This substitution eliminates mechanical complexity while achieving the same measurement precision through computational geometry.
Solution Approach 2:
The system merges the detection functions of multiple fixed sensors to achieve what would otherwise require a single rotatable sensor. By combining data from multiple stationary sensors positioned at different locations, the system achieves accurate width detection without the complexity of rotatable mounting mechanisms.
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 the detection and automatic parking in diagonal spaces with variable angles, overcoming the limitations of existing systems that only support parallel and vertical parking, thereby enriching the functionality and application of automatic parking products.
Implementation Method 1
the position of an ultrasonic sensor mounted on the side of a vehicle is not fixed, and the orientation position of an ultrasonic probe can be dynamically adjusted by a stepping motor, so that the width of the parking space can be detected by the position-adjustable ultrasonic wave
Data Source
AI summary
Provided are a diagonal parking space detection method and device, and an automatic parking method and system. The diagonal parking space detection method includes: operation S11, determining a target diagonal parking space in multiple diagonal parking spaces arranged along a reference line, wherein the target diagonal parking space is located between a first reference parking space and a second reference parking space; operation S12, detecting a first reference point identifying an intersection point between the first reference parking space and the reference line; operation S13, calculating a slope of the target diagonal parking space; operation S14, detecting a second reference point identifying an intersection point between the second reference parking space and the reference line; and operation S15, calculating a width of the target diagonal parking space.