Rotatable Daylight Sensor Enclosure for Window Alignment
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Solution Overview
Problem
Existing daylight sensors face challenges in easily directing their lenses towards windows for optimal light measurement, as they are typically mounted to ceilings at a distance from windows, requiring a solution for flexible orientation.
Innovation Solution
A daylight sensor with a rotatable enclosure allows the lens to be easily directed towards a window after mounting, utilizing a snap-secured cover portion that can rotate 360 degrees with discrete positioning, enabling precise alignment with the window.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the daylight sensor is mounted to the ceiling at a distance from the window, then the sensor can be installed in various locations, but the lens cannot be easily directed towards the window for optimal light measurement
Solution Approach 1:
The enclosure is designed with a rotatable cover portion that can rotate 360 degrees around the base portion, allowing the lens to be dynamically directed towards the window after mounting. This rotational capability enables the sensor to adapt its orientation to different window positions while maintaining ceiling mounting flexibility.
Solution Approach 2:
The enclosure is divided into two main segments: a base portion that remains mounted to the ceiling surface and a cover portion that can rotate independently. This segmentation allows the mounting location to be fixed while the lens orientation can be adjusted, resolving the contradiction between mounting flexibility and alignment ease.
2Manufacturing precision
If the cover portion is made rotatable to direct the lens towards the window, then the alignment precision is improved, but the device complexity increases
Solution Approach 1:
A simple rotational mechanism is implemented where the cover portion can rotate 360 degrees around the base portion. This dynamic element provides precise alignment capability through discrete positioning detents while adding minimal structural complexity compared to more complex adjustment mechanisms.
Solution Approach 2:
The rotatable cover portion is designed to be manually operated by the user to achieve the desired lens orientation. The self-service adjustment mechanism eliminates the need for complex motorized or automated alignment systems, maintaining device simplicity while providing precise alignment capability.
3Adaptability or versatility
If the cover portion can rotate 360 degrees, then the adaptability to different window positions is improved, but the stability of the enclosure decreases
Solution Approach 1:
The enclosure incorporates a controlled dynamic element where the cover portion can rotate to different orientations while remaining connected to the base portion. The rotational joint provides stability during normal operation while allowing controlled movement for adjustment, balancing stability with adaptability.
Solution Approach 2:
The separation of the base portion and cover portion allows the stable base to remain mounted to the ceiling while the cover portion provides rotational adaptability. This segmentation maintains overall enclosure stability during operation while enabling orientation changes when needed.
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 design enhances the ability to measure natural light intensity accurately, improving the control of lighting loads by allowing for better alignment and adaptability to changes in room layout, ensuring consistent total light levels.
Implementation Method 1
a photosensitive circuit for measuring a light intensity
Data Source
AI summary
A sensor adapted to be mounted to a surface has a rotatable enclosure that may be used, for example, to direct a lens of the sensor towards a window. The daylight sensor includes a photosensitive circuit for measuring a light intensity in the space, a cover portion, and a base portion adapted to be mounted to the surface. The cover portion is rotatable with respect to the base portion, for example, to direct the lens towards the window after the base portion is mounted to the surface. The base portion may also include a cylindrical wall having a channel adapted to capture a snap of the cover portion, such that the snap may move angularly through the channel to allow for rotation of the cover portion with respect to the base portion to a plurality of discrete positions.