Wearable Proximity Sensor Activates Flashing Light for Officer Safety
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Solution Overview
Problem
Law enforcement officers and first responders are at risk of being struck by vehicles during nighttime traffic stops due to difficulty in being seen, as existing solutions are inadequate for enhancing visibility when outside their vehicles.
Innovation Solution
A wearable lighting system comprising a wireless sensor and transmitter that automatically activates a bright, flashing light-emitting device when the user is outside their vehicle and deactivates it when inside, using electromagnetic fields or radio waves to determine proximity, with an optional manual switch for control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a wearable lighting system is implemented to improve officer visibility, then safety is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple functions into a single wearable device: the light-emitting device provides visibility, the sensor detects proximity to the vehicle, and the wireless communication enables automatic control. This integration resolves the technical contradiction by achieving improved safety through a unified system rather than separate components.
Solution Approach 2:
The wearable lighting system automatically activates and deactivates based on the sensor detecting the officer's proximity to the vehicle, without requiring manual intervention. This self-service capability improves safety while minimizing the complexity of user interaction, as the system manages itself based on environmental conditions.
2Ease of operation
If automatic activation is implemented, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The sensor continuously monitors the officer's proximity to the vehicle in advance, automatically triggering light activation before the officer needs it. This preliminary action improves ease of operation by eliminating manual control steps, while the automated nature prevents complexity from burdening the user.
Solution Approach 2:
The system uses wireless communication between the sensor and light-emitting device to create a feedback loop: the sensor detects proximity conditions and automatically signals the light to activate or deactivate. This feedback mechanism enables automatic operation without requiring complex user interfaces or manual adjustments.
3Ease of operation
If wireless communication is used for automatic control, then ease of operation is improved, but reliability may worsen due to potential signal issues
Solution Approach 1:
The wireless communication system acts as an intermediary between the sensor and light-emitting device, enabling automatic control without physical connections. This resolves the contradiction by providing ease of operation through contactless control while the established wireless protocols ensure reliable signal transmission between components.
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 significantly enhances the visibility of users outside their vehicles, reducing the risk of accidents by providing automatic and manual control over the light-emitting device, thus improving safety without requiring active intervention.
Implementation Method 1
The sensor and transmitter may communicate via electromagnetic fields or, more specifically, radio waves.
Implementation Method 2
The light-emitting device may flash when activated and may include at least one light-emitting diode.
Data Source
AI summary
A wearable lighting system includes a first wireless communications device such as a transmitter disposed within a vehicle, a light-emitting device worn by a user, and a second wireless communications device such as a sensor. The sensor is worn by the user and is in wireless communication with the transmitter. The sensor is adapted to activate the light-emitting device when the sensor is greater than a threshold distance from the transmitter and adapted to deactivate the light-emitting device when the sensor is a less than or equal to the threshold distance from the transmitter, thereby causing the light-emitting device to automatically activate upon the user exiting the vehicle and automatically deactivate when the user returns to the vehicle.