Adaptive Street Lighting Dimming via Sensor Feedback
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Solution Overview
Problem
Existing street lighting systems activate lights regardless of vehicle presence, leading to unnecessary energy consumption and potential safety hazards due to inadequate lighting during adverse weather or daylight hours.
Innovation Solution
An adaptive street lighting system that adjusts light intensity based on real-time traffic data, weather conditions, and luminance using a decentralized wireless mesh network, allowing for precise and immediate adjustments to lighting levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If light members are activated by remote control at pre-determined times during nighttime hours, then road visibility is promoted for drivers and pedestrians, but unnecessary energy expenditure occurs when no vehicles are present
Solution Approach 1:
The system dynamically adjusts the activation state of light members based on real-time detection of vehicle presence and environmental conditions. Instead of fixed pre-determined activation times, the lighting system transitions between active and inactive states according to actual road conditions, optimizing the balance between visibility requirements and energy consumption.
Solution Approach 2:
The system implements feedback mechanisms where sensors detect vehicle presence, luminance levels, and weather conditions, then this information feeds back to the control unit which adjusts light member activation accordingly. This closed-loop control ensures lighting is provided only when and where actually needed, eliminating waste while maintaining safety.
2Use of energy by moving object
If light members are activated exclusively when vehicle or pedestrian passes by, then energy consumption is reduced, but lighting along specific road sections cannot be managed depending on actual conditions such as traffic conditions, luminance, and weather conditions
Solution Approach 1:
The road network is divided into multiple sections, each with its own set of light members controlled independently. This segmentation allows different road sections to have different activation states based on their specific conditions - some sections may be active while others remain inactive, enabling fine-grained adaptive management that responds to local traffic, luminance, and weather conditions.
Solution Approach 2:
The system applies local quality by allowing each light member or road section to have its own activation characteristics based on local conditions. Instead of uniform activation across the entire network, each segment adapts its lighting properties according to its specific traffic flow, ambient luminance, and weather conditions, achieving versatile adaptive management.
3Reliability
If remote control unit activates light members when needed during daylight hours due to adverse weather conditions, then visibility is improved, but excessive delays occur increasing the risk of traffic accidents
Solution Approach 1:
The system performs preliminary action by having sensors continuously monitor environmental conditions including luminance and weather parameters in advance. When adverse conditions are detected, the control unit can immediately activate the appropriate light members without waiting for vehicle presence or experiencing delays, as the system is already in a state of readiness to respond.
Solution Approach 2:
Real-time feedback from environmental sensors enables the system to detect adverse weather conditions and low luminance levels immediately, triggering instantaneous activation of light members. This feedback mechanism eliminates the delays associated with periodic checking or manual intervention, ensuring visibility is restored without time loss.
Data Source
AI summary
The adaptive street lighting system (1) comprises a plurality of light members (2) positioned along a road network (R), wherein each of the light members is provided with one lighting element (3) adapted to illuminate one section of the road network, one adjusting device (4) configured to adjust the light intensity of the lighting element (3), one weather detecting unit (5) provided with a set of sensors (6) configured to detect weather data representative of the weather conditions in the proximity of the road network (R) and one traffic monitoring assembly (7) provided with one traffic sensor (8) configured to detect traffic data on the road network (R), wherein each of the light members (2), the weather detecting unit (5) and the monitoring assembly (7) comprises a related communication device (9) configured to define a transceiver network for the data, and wherein each of the light members (2) comprises at least one control device (10) configured to control in real time the adjusting device (4) to dim in real time the light intensity of the lighting element (3) depending on the data.