Distributed Solar Flasher with Wireless Sensor Segmentation
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Solution Overview
Problem
Traditional solar-powered beacon flashers have limited detection range and often result in false activations due to short sensing ranges, leading to continuous flashing, which is inefficient and distracting for drivers and residents.
Innovation Solution
A distributed sensing system with wireless communication between solar-powered detectors and flashers, allowing for long-range detection of vehicles and pedestrians without physical connections, enabling targeted and efficient activation of flashers based on presence and movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If motion sensors or video cameras are used as triggering sensors to avoid continuous flashing, then visual noise for residents is reduced, but the sensing range becomes very short making it difficult to detect fast-moving vehicles early
Solution Approach 1:
The system divides the sensing function into separate distributed sensors that are spatially separated from the flasher unit. Multiple sensors can be positioned at different locations along the road to achieve extended coverage without requiring a single sensor with extremely long range.
Solution Approach 2:
A wireless communication system acts as an intermediary between the distributed sensors and the flasher unit. This allows sensors to be located far from the flasher while still maintaining reliable triggering capability, solving the problem of short sensing range without requiring physical connection.
2Reliability
If sensors are positioned close to flashers for reliable triggering, then activation reliability is improved, but the detection range is limited and false detections increase
Solution Approach 1:
The system segments the sensing and alerting functions into separate components. Sensors are distributed along the road while flashers are positioned at strategic locations, allowing each component to be optimized independently for its specific function.
Solution Approach 2:
The system incorporates feedback mechanisms where sensor data from multiple distributed locations is processed to determine appropriate flasher activation. This feedback loop helps reduce false detections by considering data from multiple sources before triggering the alert.
3Reliability
If continuously flashing beacons are used to ensure driver attention, then driver alertness is improved, but visual noise for residents increases and energy consumption rises
Solution Approach 1:
Instead of continuous flashing, the system uses periodic flashing triggered only when vehicles or pedestrians are detected. The flashers operate intermittently based on actual detection events, reducing energy consumption while maintaining effectiveness when needed.
Solution Approach 2:
The system uses solar-powered sensors and flashers that are self-sufficient. The solar panels automatically charge batteries during the day, and the system self-regulates its operation based on detected conditions, eliminating the need for continuous external power supply.
4Loss of time
If solar-powered sensors with long sensing range are used to detect fast-moving vehicles early, then detection time is improved, but device complexity and cost increase significantly
Solution Approach 1:
The system achieves extended detection coverage by segmenting the sensing function across multiple distributed sensors rather than requiring a single complex long-range sensor. This modular approach reduces individual component complexity while maintaining overall system capability.
Solution Approach 2:
The system replaces complex mechanical or electronic long-range sensing mechanisms with simpler solar-powered sensors that use wireless communication to extend their effective range. This substitution reduces device complexity while achieving the same functional goal.
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
The system provides accurate and timely alerts to drivers with reduced false activations and power consumption, enhancing road safety and minimizing visual noise for residents.
Implementation Method 1
solar-powered detectors
Data Source
AI summary
A system is provided for distributed sensing and flashing of a beacon or sign for alerting vehicle drivers. A version is provided where a solar flasher having a wireless receiver is configured with multiple strategically located sensors to detect pedestrian and vehicle motion and wirelessly transmit detections to the beacon or sign. A method of locating and processing the sensors is provided to enable detection of various dangerous pedestrian and vehicle motion patterns to thereby alert on-coming drivers.