Site-Based Clustered Anti-Pass Back Security System
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Solution Overview
Problem
Existing access control systems with anti-pass back features face performance and throughput issues due to high volumes of APB status updates, leading to backlogs and operational problems, especially in large secured facilities, and reducing the number of access controllers increases maintenance costs.
Innovation Solution
Implementing a site-based clustered APB security system where the host system transmits APB status updates only to access controllers within the same site, rather than globally, reducing the number of updates and alleviating backlogs while allowing a single host system to support a higher number of access controllers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the host system transmits APB status updates to all access controllers globally, then anti-pass back security is maintained across the entire system, but network traffic increases and throughput constraints cause backlogs and performance degradation
Solution Approach 1:
The patent divides the access control system into multiple sites, where each site maintains independent APB status updates. The host system only transmits updates to access controllers within the same site rather than globally to all controllers. This segmentation reduces network traffic and eliminates backlogs while preserving APB security within each site boundary.
2Ease of manufacture
If the number of access controllers is reduced to decrease maintenance costs, then maintenance costs decrease, but the system cannot support large secured facilities with thousands of card readers
Solution Approach 1:
The patent organizes access controllers into site-based clusters that can be independently managed. This allows a single host system to support a higher number of access controllers across multiple sites without increasing maintenance complexity, as each site operates with localized APB updates.
Solution Approach 2:
The patent introduces a spatial dimension to APB status update transmission by limiting updates to within-site controllers only. This dimensional constraint allows the system to scale to thousands of controllers across multiple sites while maintaining manageable maintenance costs through localized update propagation.
3Reliability
If APB status updates are transmitted frequently to maintain security, then security reliability is improved, but network traffic increases causing backlogs and operational issues
Solution Approach 1:
The patent applies local quality by restricting APB status update transmission to only those access controllers located within the same site as the triggering controller. This localized approach maintains security reliability within each site while dramatically reducing the overall volume of network traffic compared to global transmission.
Data Source
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AI summary
Site based clustered APB security systems and methods are provided. Some systems can include a first plurality of access controllers located at a first site, a second plurality of access controllers located at a second site, and a host system supporting each of the first and second plurality of access controllers. A triggering event at a first of the first plurality of access controllers can cause the first of the first plurality of access controllers to transmit a triggering signal to the host system. Responsive thereto, the host system can identify the remaining access controllers in the first plurality of access controllers, transmit a status update to the remaining access controllers in the first plurality of access controllers, and avoid transmitting the status update to the second plurality of access controllers.