Dynamic Obstacle Detection Range Adjustment for Mobile Devices
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Solution Overview
Problem
Conventional mobile electronic apparatuses have a fixed obstacle detection range that does not adjust with the user's walking speed, leading to insufficient collision avoidance when the user is distracted by the device's display.
Innovation Solution
A mobile electronic apparatus that dynamically adjusts its obstacle detection range based on the user's walking speed, using a processor to acquire and process movement speed data, detect objects within the adjusted range, and notify the user of potential collisions through the display, speaker, and vibrator when the device's display is active.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed obstacle detection range is used, then the device structure remains simple, but collision avoidance becomes insufficient when user walking speed increases
Solution Approach 1:
The patent applies dynamics by making the detection range adjustable rather than fixed. The control unit dynamically changes the detection range based on the detected walking speed, allowing the system to adapt to different user conditions. This resolves the contradiction by enabling the detection range to be flexible (improving reliability) while maintaining relatively simple device architecture (managing complexity).
Solution Approach 2:
The patent changes the parameter of detection range based on the parameter of walking speed. When walking speed increases, the detection range is extended to provide sufficient warning time. This parameter coupling allows the system to maintain simple structure while improving collision avoidance effectiveness through intelligent parameter adjustment.
2Adaptability or versatility
If the detection range is extended to cover faster walking speeds, then collision avoidance improves, but the device cannot adapt to slower walking speeds efficiently
Solution Approach 1:
The patent uses parameter changes to adjust the detection range according to walking speed. For slow walking speeds, a shorter detection range provides timely notifications, while for fast walking speeds, an extended detection range ensures sufficient warning time. This dynamic parameter adjustment achieves both adaptability and timing accuracy.
Solution Approach 2:
The system dynamically adjusts the detection range based on real-time walking speed detection. This dynamic adaptation allows the device to be versatile across different walking conditions while maintaining accurate notification timing by calculating the appropriate detection distance based on current speed parameters.
3Reliability
If obstacle detection is always active, then collision avoidance is maximized, but energy consumption increases
Solution Approach 1:
The patent implements periodic action by activating obstacle detection only when the display is in the on state and the user is walking. The control unit periodically checks the display state and walking condition, and only performs obstacle detection when both conditions are met. This reduces energy consumption compared to continuous detection while maintaining reliable collision avoidance when needed.
Solution Approach 2:
The system uses feedback from the display state sensor and walking detection to control obstacle detection activation. When the display is on and walking is detected, the system feedbacks to activate detection; when display is off or user is stationary, detection is deactivated. This feedback mechanism ensures consistent collision avoidance when necessary while reducing energy consumption during unnecessary periods.
Data Source
AI summary
A mobile electronic apparatus includes a memory that stores a search range of an object and a processor that executes a process. The process includes acquiring a moving speed of the mobile electronic apparatus, determining the search range of the object on a basis of the moving speed, detecting the object existing within the search range, detecting whether a display unit of the mobile electronic apparatus is in an active state, and notifying that the object is detected when the display unit is detected to be in the active state and the object existing within the search range is detected.