Movable Assembly Optical Feedback for Accurate Component Exposure
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Solution Overview
Problem
Existing solutions for controlling the movement of movable assemblies in electronic devices lack accuracy in determining the specific position of the assembly, leading to potential issues such as incomplete exposure of components like cameras, which can result in poor performance and mechanical stress.
Innovation Solution
The use of optical proximity sensors to emit and detect light intensity, allowing for precise determination of the movable assembly's position relative to a fixed assembly, enabling accurate control of its displacement and exposure/retraction based on light intensity variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a stopper is disposed to control the movable assembly position, then the movable assembly can reach a target position, but the specific position during movement remains unknown leading to potential incomplete exposure
Solution Approach 1:
The patent replaces the purely mechanical stopper-based position control with an optical detection system. Optical proximity sensors emit light and detect reflected light to continuously monitor the movable assembly's position, providing precise measurement without adding complex mechanical feedback mechanisms. This substitutes mechanical position verification with optical field-based detection.
Solution Approach 2:
The patent implements a feedback control system where optical proximity sensors continuously detect the movable assembly's position and provide real-time feedback to the control unit. The control unit adjusts the movable assembly's position based on this feedback, ensuring accurate exposure. This closed-loop feedback resolves the issue of unknown position during movement.
2Reliability
If the movable assembly moves without position feedback, then the structure remains simple, but the component exposure may be incomplete resulting in poor performance
Solution Approach 1:
The patent uses optical proximity sensors to replace mechanical position feedback mechanisms. The sensors detect the movable assembly's position through light emission and reflection, providing reliable position information without complex mechanical linkages. This ensures complete component exposure while maintaining relatively simple device structure.
Solution Approach 2:
The patent introduces optical proximity sensors as intermediary detection devices between the movable assembly and the control system. These sensors act as mediators that convert physical position information into detectable optical signals, enabling reliable position monitoring without direct mechanical contact or complex feedback mechanisms.
3Ease of operation
If the movable assembly is driven to move without position monitoring, then the control system remains simple, but mechanical stress may occur due to inaccurate positioning
Solution Approach 1:
The patent implements real-time position feedback using optical proximity sensors that continuously monitor the movable assembly's position during movement. The control unit receives this feedback and adjusts the driving force accordingly, preventing mechanical stress caused by inaccurate positioning or forced movement against mechanical limits. This maintains ease of operation while protecting mechanical components.
Solution Approach 2:
The patent employs dynamic position monitoring where the optical detection system continuously tracks the movable assembly's position during movement. This dynamic feedback enables the control system to adapt the movement parameters in real-time, ensuring smooth operation and preventing mechanical stress while maintaining operational simplicity.
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 enhances the flexibility and accuracy of controlling movable assemblies, ensuring complete component exposure/retraction, reducing mechanical stress, and improving overall device performance.
Implementation Method 1
the first optical proximity sensor emits light facing the fixed assembly and detects a light intensity of light incident on the first optical proximity sensor, the light incident on the first optical proximity sensor includes light that is from the first optical proximity sensor and that is reflected by the fixed assembly
Data Source
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AI summary
This application provides an electronic device and a control method for a movable assembly. The electronic device provided in this application includes a movable assembly. An optical proximity sensor is disposed on the movable assembly. The movable assembly may be spaced from a fixed assembly on the electronic device, and the movable assembly can move on a plane that is disposed in parallel relative to the fixed assembly. A light intensity of light that is from the optical proximity sensor and that is reflected by the fixed assembly may reflect a position of the movable assembly relative to the fixed assembly. According to the control method for a movable assembly in this application, whether the movable assembly moves to a specified target position may be determined based on the light intensity of the light that is reflected by the fixed assembly and that is detected by the optical proximity sensor.