Adjustable Spherical Motion Sensor Housing for Outdoor Light Field Control
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Solution Overview
Problem
Existing motion sensing outdoor security lights have fixed and limited fields of view, requiring cumbersome adjustments that can damage the fixture and compromise the aesthetic design, and often fail to adapt to changing environmental conditions.
Innovation Solution
A rotationally adjustable spherical motion sensor housing with a control circuit that allows for easy adjustment of the sensor's field of view and sensitivity without tools, using a spherical shroud and gear racks for mechanical adjustment, and electronic components for sensitivity modification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the motion sensor housing is made fixed and non-adjustable, then the device complexity is reduced and manufacturing is simplified, but the adaptability to different installation environments and changing conditions deteriorates
Solution Approach 1:
The motion sensor housing is designed with adjustable mechanisms including a rotatable housing that can be rotated about a first axis and tilted about a second axis, transforming the fixed structure into a dynamic one. This allows the sensor to adapt its field of view to different installation environments and changing conditions while maintaining a relatively simple manufacturing process through modular components.
Solution Approach 2:
The motion sensor housing is divided into multiple independent segments including the main housing, the rotatable portion, and the tiltable sensor assembly. This segmentation allows each part to be manufactured separately and assembled together, maintaining manufacturing simplicity while enabling complex adjustment capabilities through the interaction of segmented components.
2Adaptability or versatility
If the motion sensor housing is made adjustable with multiple axes, then the adaptability to different environments is improved, but the device complexity and ease of operation deteriorates due to requiring tools and disassembly
Solution Approach 1:
The adjustment mechanism incorporates a release member that, when actuated, allows the housing to be rotated and the sensor to be tilted without requiring tools or disassembly. The self-service design enables users to easily adjust the field of view by simply manipulating the release member and moving the housing to the desired position, then releasing the member to lock the adjustment in place.
3Adaptability or versatility
If the motion sensor housing is made adjustable, then the adaptability to environmental changes is improved, but the reliability and risk of damage during adjustment deteriorates
Solution Approach 1:
The housing incorporates a controlled dynamic adjustment mechanism where the release member enables movement only when intentionally activated. This prevents accidental adjustments that could lead to damage, while still allowing deliberate repositioning of the sensor to adapt to environmental changes. The mechanical locking system maintains reliability by securing the housing in the desired position once adjusted.
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
Enables easy and tool-free adjustment of the motion sensor's field of view and sensitivity, improving installation flexibility and maintaining the aesthetic design while adapting to environmental changes.
Implementation Method 1
These devices are generally referred to as passive infrared, or 'PIR' motion sensors. These sensors are incorporated into the light fixture housing to trigger the lighting upon detection of the person, motor vehicle, or like heat emitting objects.
Implementation Method 2
The gear rack includes a plurality of notches configured to mate with the adjustment tab to allow the adjustment tab to move along the gear rack and allow a first axis adjustment of the motion sensor housing.
Data Source
AI summary
The present disclosure sets forth a motion sensing outdoor security light with the flexibility of being mounted to either a wall structure or to an eave or ceiling structure. An adjustable spherical motion sensor housing may be provided with the rotationally adjustable outdoor security light, allowing easy adjustment of motion detection ranges under different mounting schemes without comprising the aesthetic design of the light. The adjustable spherical motion sensor housing may also provide an enlarged horizontal field of view for better performance. Sensitivity of a motion sensor may be adjusted via a control circuit based on adjustment of the spherical motion sensor housing.