HR Sensor Shielding in Mobile Device Housing
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Solution Overview
Problem
Existing sensor devices in electronic devices require separate mounting locations, leading to increased device thickness, aesthetic issues, and higher manufacturing costs due to interference with other components and the need for additional design constraints.
Innovation Solution
A sensor device, such as a Heart Rate (HR) sensor, is integrated into the electronic device's housing alongside other components like a display module and communication module, with a shielding unit to prevent interference, allowing for reduced mounting space and improved design aesthetics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sensor device is mounted in a separate location from other electronic components, then the sensor can function properly without interference, but the device thickness increases and the appearance is defaced
Solution Approach 1:
The patent combines the sensor device with other electronic components into a single integrated module, allowing them to share the same mounting space. The sensor device is positioned adjacent to electronic components such that they function together without requiring separate locations, thereby reducing overall device thickness while maintaining sensor functionality through proper shielding.
Solution Approach 2:
A shielding unit is introduced as an intermediary element between the sensor device and electronic components. This shielding unit prevents electromagnetic interference from the electronic components affecting the sensor, enabling the sensor to function reliably when mounted in close proximity to other components without requiring complete spatial separation.
2Reliability
If the sensor device is mounted in a separate location, then interference with electronic components is avoided, but additional processes and parts are required increasing manufacturing cost
Solution Approach 1:
The sensor device and electronic components are merged into a single integrated assembly that can be manufactured as one unit. This integration eliminates the need for separate mounting processes and additional fastening parts, reducing manufacturing complexity and cost while maintaining the functional separation needed for reliable sensor operation.
Solution Approach 2:
The integrated module serves multiple functions simultaneously - the housing structure provides both mechanical support for electronic components and mounting for the sensor device, while the shielding unit provides both electromagnetic protection and structural integration. This multi-functionality reduces the number of separate parts and manufacturing steps required.
3Area of stationary object
If the sensor device is integrated with other components, then mounting space is reduced, but interference between components occurs
Solution Approach 1:
A shielding unit is positioned between the sensor device and electronic components to block electromagnetic interference. This intermediary element allows the sensor and electronic components to be mounted in close proximity, maximizing space utilization while preventing harmful electromagnetic interactions through the shielding barrier.
Solution Approach 2:
The shielding is applied locally only in the specific regions where electromagnetic interference occurs between the sensor device and electronic components, rather than requiring complete shielding of the entire device. This localized approach minimizes the space consumed by shielding materials while effectively preventing interference in critical areas.
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
The integration of the HR sensor with other components reduces device thickness, enhances design aesthetics, and lowers manufacturing costs while preventing interference, thereby improving the overall performance and user experience of the electronic device.
Implementation Method 1
a shielding unit configured to provide shielding between an area of the HR sensor and an area of the flash LED
Data Source
AI summary
A mobile electronic device is provided. The mobile electronic device includes at least one processor, a display module electrically connected with the at least one processor, a communication module electrically connected with the at least one processor, a portable electronic device housing configured to house at least a part of the display module, the at least one processor, and the communication module, and a Heart Rate (HR) sensor (e.g., a Heart Rate Monitor (HRM) sensor) which is placed on one surface of the housing and has at least its part exposed to an outside, and which is electrically connected with the at least one processor.