Manual Fire Alarm Signaling Device with Segmented Control Panel
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing manual signaling devices, particularly fire alarms, face challenges in ensuring reliable and error-free operation while conforming to standards like EN 54-11, especially in triggering mechanisms that require robustness and clear user indication.
Innovation Solution
A signaling device with a sliding panel that is prestressed and locked in a form-fitting manner, where user actuation breaks the contact with a support surface, allowing the panel to move and trigger a switching element reliably, with optional breakable or resettable control panels for safe operation and visible markings for acknowledgment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a manual signaling device uses a breakable glass pane or simple push button mechanism, then the device complexity is reduced and manufacturing cost decreases, but the reliability of triggering and resistance to erroneous activation increases
Solution Approach 1:
The control panel is segmented into a first control element (breakable glass pane) and a second control element (push button), where the glass pane provides initial activation and the push button provides confirmation. This segmentation allows each element to perform a specific function, improving reliability without requiring a single complex mechanism.
Solution Approach 2:
The breakable glass pane performs a preliminary action by breaking to initiate the triggering sequence. This preliminary action must occur before the push button can be actuated, ensuring that only after deliberate breakage can the device be activated, thereby preventing erroneous triggering while maintaining a relatively simple overall structure.
2Ease of operation
If a manual signaling device requires deliberate two-step actuation (breaking glass pane + pressing button), then erroneous triggering is prevented, but the ease of operation during emergency decreases
Solution Approach 1:
The control panel is divided into two distinct control elements: a breakable glass pane and a push button. This segmentation allows the device to require deliberate two-step activation, preventing erroneous triggering while maintaining operational simplicity through clear physical separation of functions.
Solution Approach 2:
Breaking the glass pane serves as a preliminary action that must occur before the push button can activate the alarm. This preliminary step ensures deliberate activation without complicating the overall operation, as the sequence of actions (break then press) is intuitive and quick to perform during emergencies.
3Ease of manufacture
If the control panel uses a breakable glass pane design, then visibility and user indication are improved, but the safety risk from broken glass increases
Solution Approach 1:
The material properties of the glass pane are changed to achieve a balance between visibility and safety. The glass is designed with specific characteristics that allow it to break in a controlled manner, providing clear visual indication when broken while minimizing the formation of sharp, dangerous fragments. This parameter change resolves the contradiction between manufacturing simplicity and safety.
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 provides a robust, reliable mechanism for triggering alarms that meets EN 54-11 standards, ensuring consistent operation and user feedback, minimizing the risk of errors and injuries during activation.
Implementation Method 1
The sliding plate has a contact surface which forms a form fit with a support surface in the normal position, so that the displacement of the sliding plate is blocked in a form-fitting manner
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The detection device has a manual trigger, particularly manual fire-alarm boxes, a housing and control panels (4). A slide plate (8) is provided in the housing between a normal position and a reporting position displaced in a displacement direction (13). A support surface (23) is arranged on or at the control panels in such a manner that the positive locking is lifted by the actuation of the control panels between support surface and abutment surface (24), such that the slide plate is exchanged automatically from the normal position to the reporting position.