Motion Sensor Bracket for Linear Luminaire Alignment
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Solution Overview
Problem
Conventional motion sensors for fluorescent luminaires are costly and cumbersome to install, often requiring additional wiring and increasing the length of luminaires, which can lead to misalignment and reduced light levels, especially in large facilities.
Innovation Solution
A motion sensor installation bracket that couples the sensor to the luminaire without extending its length, using a support member to position the sensor at a distance from the luminaire and a centering member to maintain alignment, allowing for multiple sensors to be installed without adding length to the luminaire.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a motion sensor is installed directly on a luminaire, then the motion sensor can control the luminaire without additional wiring, but the luminaire length increases, resulting in misalignment and space inefficiency
Solution Approach 1:
The motion sensor is nested within the luminaire housing by utilizing the plenum space between the lamp and the housing. The bracket positions the motion sensor inside the existing luminaire boundaries, allowing the sensor to be housed without extending the external dimensions of the luminaire.
Solution Approach 2:
Instead of extending the luminaire in the longitudinal dimension to accommodate the motion sensor, the invention repositions the sensor in the radial dimension by utilizing the plenum space. This dimensional shift allows the sensor to be installed without increasing the luminaire's length while maintaining proper positioning.
2Length of stationary object
If conventional motion sensors are installed in the ceiling, then additional wiring is required, but the installation becomes more costly and complex
Solution Approach 1:
The luminaire itself serves as the mounting structure for the motion sensor through the bracket assembly. The bracket utilizes existing luminaire components (housing, plenum space, mounting surfaces) to install the sensor without requiring external ceiling structures or additional wiring infrastructure, making the luminaire self-sufficient for sensor installation.
3Reliability
If multiple motion sensors are installed on long runs of luminaires, then motion control coverage is improved, but the cumulative length increase becomes significant and causes alignment issues
Solution Approach 1:
Each motion sensor is nested within its respective luminaire housing, allowing multiple sensors to be installed along long runs of luminaires without adding cumulative length. The plenum space within each luminaire accommodates the sensor and bracket, ensuring that the external dimensions remain consistent across all luminaires regardless of sensor installation.
Data Source
AI summary
A method and apparatus for motion sensor installation includes an apparatus for installing a lighting accessory to a first luminaire having a luminaire housing. The bracket includes a coupling member operative to couple the bracket to one of the luminaire housings. A support member extends from the coupling member, and is operative to support the lighting accessory a first distance from the luminaire housing. An attachment member that is operative to attach the lighting accessory to the lighting accessory extends from the support member. The bracket couples the lighting accessory to the luminaire housing without extending the length of the luminaire or creating a substantial gap between two luminaires in a linear configuration. In one aspect, the lighting accessory can be a motion sensor that is operative to control the power to one or more of the luminaires.