Fire Alarm Pull Station Front Access Address Programming
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Solution Overview
Problem
Conventional fire alarm pull stations require disconnection from the network and physical access to reprogram their addresses, which is inconvenient, costly, and can trigger false alarms, as the process disrupts system operation and lacks differentiation between maintenance and alarm conditions.
Innovation Solution
A fire alarm pull station with a removable actuator cover and address programming interface accessible from the front or back, allowing address programming without disconnecting from the network, and featuring an actuator switch to distinguish between normal, alarm, and maintenance states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If address programming is performed by disconnecting the pull station from the network and accessing network terminal connections on the back, then address reprogramming is possible, but system operation is disrupted and false alarms may be triggered
Solution Approach 1:
The patent divides the programming interface access into separate physical locations (front and back of the device), allowing different access methods for different purposes. The front connector channel allows programming without disconnection, while the back provides traditional access when needed.
Solution Approach 2:
The patent introduces an intermediary programming device that can communicate with the pull station through the front connector channel without requiring network disconnection. This intermediary device enables address programming while maintaining normal system operation.
2Ease of repair
If the pull station door is opened to access mounting screws and network terminals for address programming, then reprogramming is possible, but a fire alarm is initiated that cannot be distinguished from normal activation
Solution Approach 1:
The patent separates the programming interface from the alarm actuator mechanism. The front connector channel provides dedicated programming access that does not involve opening the door or triggering the alarm mechanism, thus eliminating false alarms during maintenance.
Solution Approach 2:
The patent extracts the programming interface functionality from the traditional back-access method and places it at the front of the device. This extraction allows programming operations to be performed independently of door opening and alarm activation mechanisms.
3Ease of manufacture
If dip switches or fixed rotary switches are used for address setting, then address configuration is possible, but these switches are not easily accessible after installation on wall or ceiling
Solution Approach 1:
The patent inverts the traditional approach by placing the programming interface at the front of the device (visible and accessible side) rather than on the back (hidden side after installation). This allows easy post-installation access to the connector channel for address programming.
Solution Approach 2:
The front connector channel serves multiple functions: it allows programming device connection for address configuration, provides a means to access the actuator mechanism, and maintains aesthetic appearance by not requiring door opening. This multi-functionality improves post-installation accessibility.
4Adaptability or versatility
If reprogramming is performed by disconnecting network wiring at the back, then address changes are possible, but the procedure is costly and disruptive to system operation
Solution Approach 1:
The patent prepares the programming interface in advance by providing a dedicated front connector channel that is ready for programming device connection without requiring any disconnection or reconfiguration of network wiring. This preliminary preparation enables quick address changes without system disruption.
Solution Approach 2:
The programming device acts as an intermediary that communicates with the pull station through the front connector channel, enabling address reprogramming without direct manipulation of network wiring. This intermediary approach maintains system operational efficiency while providing address flexibility.
Data Source
AI summary
A building device with a front accessible address programming interface is provided. The building device includes a mounting base having front and rear surfaces. The front surface defines two connector channels extending towards the rear surface. The connector channels are spaced apart and sized to each receive a respective prong of a programming device connector plug. The building device further includes external terminals disposed on the rear surface, internal terminals, a group of normally closed switches having a common control input, and an actuator. Each switch connects an external terminal to a respective internal terminal when the common control input is deactivated to provide a network connection. The actuator is connected to the common control input and disposed such that the connector plug engages the actuator to activate the common control input of the switches when each of the connector channels receive a respective prong of the connector plug.