Light Sensing Pull Station Illumination and Reset
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Solution Overview
Problem
Existing fire alarm pull stations do not automatically reset or deactivate the alarm signal after manual reset, and they lack automatic illumination in low-light conditions, which can hinder visibility and effectiveness during emergencies.
Innovation Solution
Incorporating light sensors that detect low-light conditions and communicate a signal to activate a light source for illumination of the alarm pull station and its components, ensuring visibility and automatic deactivation of the alarm signal upon manual reset.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual reset is used for alarm pull station, then the handle can be returned to normal position, but the alarm signal cannot be deactivated automatically
Solution Approach 1:
The system automatically detects when the handle is in the actuated position and sends a reset signal to the alarm control panel, enabling the alarm signal to be deactivated automatically without requiring manual intervention. The pull station serves itself by monitoring its own state and communicating it to the control system.
2Device complexity
If no illumination is provided in alarm pull station, then device complexity is reduced, but visibility in low-light conditions deteriorates
Solution Approach 1:
The illumination system is activated automatically when the handle is pulled to the actuated position, providing preliminary lighting before the user needs to locate or interact with other components in low-light conditions. The light source is prepared and activated in advance based on the detected handle position.
3Illumination intensity
If light sensor and illumination system are added, then visibility in low-light conditions is improved, but device complexity increases
Solution Approach 1:
The illumination system serves multiple functions: it illuminates the pull station components for visibility, and its activation state serves as an indicator that the alarm has been actuated. The light source is integrated into the existing handle assembly, sharing the same actuation mechanism, which reduces overall system complexity.
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 solution enhances visibility during emergencies by automatically illuminating the alarm pull station in low-light conditions and ensures that the alarm signal is properly reset, improving user safety and system functionality.
Implementation Method 1
the light sensor may detect, for example, a low-light condition within a given area
Data Source
AI summary
An alarm pull station includes a housing, an alarm indicator carried within the housing, an alarm activation mechanism carried within the housing, such that the alarm activation mechanism is adjacent to the alarm indicator, and configured to generate an alarm signal, and a sensor carried within the housing such that the sensor is configured to generate a signal in response to a sensed condition and the alarm indicator is activated in response to the signal generated by the sensor.