Self-Aligning Vision Bracket Assembly for Stable 3D Calibration
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Solution Overview
Problem
Existing electronic devices with vision systems face calibration issues due to external forces causing relative movement between emitter and receiver components, leading to inaccurate dimensional information determination.
Innovation Solution
A self-aligning bracket assembly that maintains a fixed distance between camera modules and a light emitting module, using a transparent cover with an alignment module to secure the bracket assembly in place, preventing relative movement and ensuring accurate object recognition without recalibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the emitter-receiver pair is calibrated and relies upon a spatial relationship between the emitter and the receiver, then accurate dimensional information can be determined, but any relative shifting or movement of one of the components causes the emitter-receiver pair to fall out of calibration
Solution Approach 1:
The patent combines the emitter and receiver components into a single integrated vision system assembly that is mounted on a common bracket structure. This merging ensures that both components move together as a unified unit, maintaining their calibrated spatial relationship even when subjected to external forces, thereby preventing calibration drift while preserving measurement accuracy
Solution Approach 2:
The patent segments the vision system into a self-contained module with the emitter and receiver mounted on a separate bracket assembly that can be independently positioned and calibrated. This segmentation allows the calibrated pair to be isolated from other components that might cause relative movement, ensuring calibration stability while maintaining measurement precision
2Manufacturing precision
If a bracket assembly is used to hold the vision system modules, then the spatial relationship between modules can be maintained, but the bracket assembly may be subject to external forces causing movement
Solution Approach 1:
The patent employs spring-loaded tensioning elements that apply counteracting forces to the bracket assembly, balancing external forces that might cause movement. These elastic elements provide continuous counter-pressure to maintain the bracket's position and the vision system modules' spatial relationships, ensuring both manufacturing precision and stability under varying external conditions
Solution Approach 2:
The patent incorporates shock-absorbing elements and flexible mounting structures in advance within the bracket assembly design. These pre-installed cushioning features absorb and dissipate external forces before they can cause significant movement or damage to the precision-positioned vision system modules, maintaining both positioning accuracy and structural stability
Data Source
AI summary
An electronic device that includes a vision system carried by a bracket assembly is disclosed. The vision system may include a first camera module that captures an image of an object, a light emitting element that emits light rays toward the object, and a second camera module that receives light rays reflected from the object. The light rays may include infrared light rays. The bracket assembly is designed not only carry the aforementioned modules, but to also maintain a predetermined and fixed separation between the modules. The bracket assembly may form a rigid, multi-piece bracket assembly to prevent bending, thereby maintaining the predetermined separation. The electronic device may include a transparent cover designed to couple with a housing. The transparent cover includes an alignment module designed to engage a module and provide a moving force that aligns the bracket assembly and the modules to a desired location in the housing.