Windshield-Mounted Dash Cam Antenna Layout for Signal Sensitivity
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Solution Overview
Problem
Conventional dash cams face challenges in antenna sensitivity due to metal portions of the bracket damping the signal, requiring time-consuming fine-tuning and prolonging new product development.
Innovation Solution
The antenna is modularized and integrated with a plastic enclosure, separate from the dash cam body, allowing it to be pasted directly onto the windshield, reducing interference from metal components and streamlining the development process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the antenna is integrated inside the plastic enclosure of the dash cam body, then the structure is compact and integrated, but the metal portion of the bracket dampens antenna sensitivity
Solution Approach 1:
The antenna module is segmented from the dash cam body and integrated with the plastic enclosure separately. This segmentation allows the antenna to be positioned independently away from metal components, resolving the contradiction between structural integration and antenna sensitivity by creating modular independent units that can be optimally positioned.
Solution Approach 2:
The antenna module is extracted from the traditional integrated position inside the dash cam body and relocated to the plastic enclosure. This extraction removes the antenna from the harmful electromagnetic environment created by metal components, thereby improving antenna sensitivity while maintaining overall system integration through the connecting bracket.
2Reliability
If the antenna position requires fine-tuning to optimize sensitivity, then antenna performance can be maximized, but time required for new product development is extended
Solution Approach 1:
The antenna module is preliminarily positioned and fixed within the plastic enclosure during the design phase, eliminating the need for time-consuming fine-tuning during product development. The connecting bracket pre-establishes the optimal position, allowing the antenna to achieve maximum sensitivity without requiring iterative adjustments in the development process.
Solution Approach 2:
The antenna module automatically achieves optimal positioning through its integrated design with the plastic enclosure and connecting bracket assembly. The structure self-adjusts to the correct position without requiring manual fine-tuning, thereby reducing development time while maintaining antenna sensitivity.
3Reliability
If components are modularized and separated, then antenna sensitivity is improved and components can be reused, but device assembly becomes more complex
Solution Approach 1:
The antenna module is merged with the plastic enclosure as an integrated unit, and the connecting bracket merges the plastic enclosure with the dash cam body. This merging approach simplifies assembly by reducing the number of separate components while maintaining the modular benefits for antenna sensitivity and component reuse across different products.
Data Source
AI summary
A dash cam includes a dash cam body, a plastic enclosure, an antenna module, and a connecting bracket. The dash cam body has a camera. The plastic enclosure has an adhesive surface and is suited for being pasted onto an inner side of a vehicle windshield through the adhesive surface. The antenna module is disposed inside the plastic enclosure and is electrically connected to the dash cam body. The connecting bracket is connected between the plastic enclosure and the dash cam body.