Movable Sensor Port Cover Enhances Airflow
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Solution Overview
Problem
Poor coupling between sensors and the external environment in electronic devices leads to slow sensor response times due to inadequate airflow and contamination, which can be exacerbated by structural protection mechanisms.
Innovation Solution
Incorporating a movable member within the electronic device that enhances airflow through the sensor port by moving relative to the device housing, either through user handling or actuated by a button, to refresh the air adjacent to environmental sensors and improve communication with the external environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If protective structures are added to the sensor port to protect from contaminants, then reliability is improved, but sensor response time deteriorates due to poor environmental coupling
Solution Approach 1:
The sensor port cover is made movable rather than fixed, allowing it to transition between closed (protected) and open (responsive) states. This dynamic structure resolves the contradiction by enabling the port to adapt its configuration based on operational needs, maintaining both protection and rapid environmental coupling.
Solution Approach 2:
The system changes the physical state of the sensor port by moving the cover between positions. This parameter change (position of the cover) allows the system to switch between protected mode and high-responsiveness mode, resolving the trade-off between reliability and response time.
2Reliability
If the sensor port is kept closed to protect the sensor, then reliability is improved, but air refreshment and sensor response deteriorate
Solution Approach 1:
The sensor port cover moves periodically or on-demand between closed and open states, creating periodic air refreshment cycles. This periodic action allows the sensor to maintain protection while periodically achieving rapid environmental coupling for accurate measurements.
Solution Approach 2:
The movable cover structure enables the sensor port to self-regulate its own protection and responsiveness needs, automatically transitioning between states based on operational requirements without external intervention, thus maintaining both reliability and productivity.
3Loss of time
If a movable member is added to enhance airflow, then sensor response time is improved, but device complexity increases
Solution Approach 1:
The movable cover is extracted as a separate, dedicated component rather than integrating complexity into the sensor housing itself. This extraction allows the airflow enhancement function to be implemented with a simple, focused mechanism rather than a complex integrated system.
Solution Approach 2:
The movable cover is implemented as a thin, flexible component that can easily move to enhance airflow. This thin-film approach minimizes the added complexity and mass while achieving the desired airflow enhancement and rapid sensor response.
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 solution enhances sensor response times by ensuring continuous refreshment of air around the sensors, reducing the time taken to measure environmental changes such as temperature, humidity, and gas composition, while maintaining protection against contaminants.
Implementation Method 1
As the movable member moves within the device, the movable member may create enhanced airflow through the sensor port. This may refresh the air adjacent to an environmental sensor and enhance sensor response time.
Data Source
AI summary
An electronic device may have input-output devices such as sensors. The sensors may include environmental sensors that make measurements on the environment surrounding the electronic device. The environmental sensors may make measurements such as temperature measurements, humidity measurements, gas composition measurements, and particulate level measurements. A sensor may communicate with external air through a sensor port in an electronic device housing. An electronic device may have a movable member. The movable member may be moved in response to motion of the electronic device when handled by user or motion of a button or other movable member that is actuated by the user. As the movable member moves, the movable member may create enhanced airflow through the sensor port. This may refresh the air adjacent to an environmental sensor and enhance sensor response time.