Adaptive Hinge Angle Detection for Foldable Screens
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Solution Overview
Problem
Current foldable phone technologies face challenges in accurately determining the hinge angle, which is crucial for optimizing user experience and adaptive functions, as existing methods are influenced by motion status and relative position between the common axis and the horizontal plane, leading to inaccuracies in hinge angle calculation.
Innovation Solution
A hinge angle detection method that determines the motion status and relative position between the common axis and the horizontal plane, selecting appropriate algorithms such as acceleration sensor, gyroscope sensor, or fusion algorithms using Kalman filtering to calculate the hinge angle, ensuring accuracy and adaptability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single sensor algorithm (acceleration or gyroscope) is used to calculate hinge angle, then the device complexity is reduced, but the measurement precision deteriorates due to motion status and orientation influences
Solution Approach 1:
The patent combines multiple sensor algorithms (acceleration sensor algorithm and gyroscope sensor algorithm) into a fusion algorithm that integrates data from both sensors. This merging approach compensates for the weaknesses of individual sensors - the acceleration sensor provides accurate static orientation data while the gyroscope provides accurate dynamic rotation data, resulting in improved hinge angle measurement precision across all motion states
Solution Approach 2:
The patent implements dynamic algorithm selection that adapts to the device's motion status. The system automatically switches between single sensor algorithms and fusion algorithms based on detected motion conditions, and further adjusts between different fusion strategies based on the relative position of the common axis to the horizontal plane. This dynamic adaptation maintains measurement precision while managing computational complexity
2Measurement precision
If motion status and relative position are considered for accurate hinge angle calculation, then the measurement precision is improved, but the device complexity increases due to multiple algorithms and conditions
Solution Approach 1:
The patent performs preliminary determination of motion status and relative position before selecting the calculation algorithm. By pre-assessing these conditions, the system can systematically choose the appropriate algorithm (acceleration sensor algorithm, gyroscope sensor algorithm, or fusion algorithm) without complex real-time decision-making, thereby improving measurement precision while managing complexity through structured preliminary analysis
Solution Approach 2:
The patent changes the computational parameters and algorithm selection based on detected motion status and relative position parameters. When the device is stationary or in specific orientations, simpler algorithms are used; when in motion or in orientations where single sensors are inadequate, the fusion algorithm with appropriate parameters is activated. This parameter-based adaptation improves precision while keeping the system manageable through clear parameter thresholds
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
This method provides a more accurate and adaptive hinge angle calculation, optimizing functions that rely on the hinge angle, such as display adjustments during unfolding and folding, by considering the impact of motion status and relative position, thereby enhancing user experience.
Implementation Method 1
determining a motion status of the electronic device and a relative position between a common axis and a horizontal plane
Implementation Method 2
a gyroscope sensor algorithm, or a fusion algorithm, and the fusion algorithm is an algorithm of fusing data of an acceleration sensor and data of a first gyroscope sensor and a second gyroscope sensor
Data Source
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AI summary
This application relates to the field of foldable screen technologies, and discloses a hinge angle detection method and a related device, to accurately calculate a hinge angle of a foldable screen. A specific solution is applied to a foldable electronic device. The foldable electronic device includes a first screen and a second screen. A motion status of the electronic device and a relative position between a common axis and a horizontal plane are determined, and then a target algorithm is determined based on the motion status and the relative position. For the current motion status and relative position, accuracy of calculating a hinge angle by using the determined target algorithm is relatively high. The target algorithm includes an acceleration sensor algorithm, a gyroscope sensor algorithm, or a fusion algorithm. The fusion algorithm is an algorithm of fusing data of an acceleration sensor and data of a gyroscope sensor to calculate a hinge angle. Then, a hinge angle of the electronic device can be accurately calculated by using the determined target algorithm.