POE Access Controller with Fire Alarm Override

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Solution Overview

Problem

Conventional access control systems require external power supplies and multiple wire connections, making installation costly and time-consuming, and they are not typically interlinked with automated fire detection systems, which can hinder emergency personnel's ability to override door locks during emergencies.

Innovation Solution

A power-over-ethernet (POE) system that uses an ethernet port to provide electrical power to a controller, which includes a Fire Alarm Control Panel (FACP) connector, allowing the system to operate independently and override door strikes during alarm conditions, eliminating the need for external power supplies and reducing wiring complexity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If external power supplies and multiple wire connections are used in conventional access control systems, then reliable power delivery and control signals are achieved, but installation cost and time increase significantly

Engineering Contradiction:

Improvepower delivery reliabilityVSAvoidwiring complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines power delivery and data communication into a single Ethernet cable using Power over Ethernet (POE) technology. The POE injector integrates power supply functionality with the network infrastructure, eliminating separate power supplies and multiple wiring connections while maintaining reliable power delivery to remote devices.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The Ethernet cable serves multiple functions simultaneously: data communication, power delivery, and device control. The POE system enables a single cable to perform what previously required separate dedicated power and communication infrastructure, reducing installation complexity while maintaining system reliability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Device complexity

If access control systems operate independently without fire alarm integration, then system simplicity is maintained, but emergency override capability is lost

Engineering Contradiction:

Improvesystem integration complexityVSAvoidemergency override capability

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent integrates fire alarm control panel connectivity with the POE access control system through a single unified controller. The controller incorporates both access control logic and fire alarm interface capabilities, allowing emergency override functionality to be added without requiring separate fire alarm hardware or complex interlinking infrastructure.

Inventive Principle:

Principle #5Merging (Combining)

3Productivity

If distributed processing with local decision-making is implemented, then system response time and independence are improved, but controller complexity increases

Engineering Contradiction:

Improvelocal decision-making speedVSAvoidcontroller processing capability

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent divides the access control system into distributed intelligent nodes (controllers at each location) that can make local decisions independently. Each controller contains embedded processing capability for local access control logic, while maintaining connectivity to central management for firmware updates and monitoring. This segmentation enables fast local response without requiring complex centralized processing.

Inventive Principle:

Principle #1Segmentation

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

Enables cost-effective and efficient installation of access control systems, allows for local decision-making and emergency override, and reduces the need for frequent firmware updates by using distributed processing and FLASH memory technology.

Implementation Method 1

configured to operate using electrical power supplied via an ethernet port of the controller (J10)

Methodology Applied

Scientific EffectPower over Ethernet (POE):

Implementation Method 2

A circuit coupled with the controller's ethernet port (J10) is configured to transform all or part of the electrical power received via the ethernet port

Methodology Applied

Scientific EffectElectrical conduction: Conduction (electrical)

Data Source

PatentUS8207814B2Kit and system for providing security access to a door using power over ethernet with data persistence and fire alarm control panel integration

Publication Date: 2012.06.26 HONEYWELL SECURITY AMERICAS LLC

AI summary

The present disclosure describes embodiments of a power-over-ethernet (“POE”) controller and an access control system comprising the same. In an embodiment, the access control system includes a POE controller configured to couple with a Fire Access Control Panel of an automated Fire Detection System. The access control system may further include one or more peripheral devices coupled with the POE controller and configured to be powered with electrical power received via an ethernet port of the POE controller. The peripheral devices may include an access device, a door strike, and a digital output device. Embodiments of a kit containing one or more partially or fully assembled components of the access control system are also described.