Lighting Control Prioritizing Brightness Sensors
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Solution Overview
Problem
Conventional lighting control apparatuses take time to adjust the dimming level of lighting devices due to sequential querying and control of multiple brightness sensors, which can lead to delays in changing the brightness of desired lighting devices.
Innovation Solution
A lighting control apparatus that assigns priorities to multiple brightness sensors and queries them accordingly, allowing for quicker adjustment of dimming levels in lighting devices by controlling the querier and controller to prioritize sensors based on differences, previous values, and current modes, ensuring timely adjustments to target brightness levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the lighting control apparatus queries multiple brightness sensors in turn sequentially, then all brightness sensors can be monitored and controlled, but it takes time from when the apparatus queries one brightness sensor to when it queries the subsequent brightness sensor, resulting in delays in adjusting dimming levels
Solution Approach 1:
The system segments the monitoring and control tasks by dividing them into priority groups. High-priority brightness sensors are queried and controlled separately from low-priority sensors, allowing time-critical adjustments to be made without waiting to process all sensors. This segmentation enables the system to handle multiple sensors efficiently by focusing resources on the most important ones first.
Solution Approach 2:
Different brightness sensors are assigned different priority levels based on their importance or usage patterns. High-priority sensors receive more frequent querying and faster response times, while low-priority sensors are processed with less frequency. This local differentiation in quality of service allows the system to optimize response time for critical sensors without unnecessarily processing all sensors at the same rate.
2Productivity
If the lighting control apparatus controls the dimming level of each lighting device according to queried brightness, then brightness adjustment is achieved, but it also takes time to control the dimming level, consequently delaying the adjustment to target brightness
Solution Approach 1:
The system performs preliminary actions by pre-querying high-priority brightness sensors and preparing control decisions in advance. When a brightness adjustment is needed, the control apparatus already has the necessary information and can execute the dimming level change immediately without waiting for the full query cycle to complete. This preliminary action reduces the overall time to reach target brightness.
Solution Approach 2:
The system dynamically adjusts the querying frequency and control response based on priority levels. High-priority sensors are queried more frequently and receive faster control responses, while low-priority sensors are processed with longer intervals. This dynamic adaptation allows the system to optimize productivity for time-critical applications without wasting resources on less important sensors.
Data Source
AI summary
A lighting control apparatus which controls dimming levels of lighting devices associated with a plurality of brightness sensors, so as to adjust brightnesses indicated by detection results detected by the plurality of brightness sensors to predetermined brightnesses, the lighting control apparatus including: a querier which periodically queries each of the plurality of brightness sensors for a detection result; and a controller which controls, for each of the lighting devices, the dimming level of the lighting device associated with a brightness sensor among the plurality of brightness sensors queried by the querier, according to the detection result detected by the brightness sensor, wherein the querier assigns priorities to the plurality of brightness sensors, and queries the plurality of brightness sensors for detection results, according to the priorities.