Link Selector Modular Access Control System
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Solution Overview
Problem
Managing multiple devices in physical access control systems is challenging due to complexities in configuration, compatibility issues between different device models, and the risk of misconfiguration, which can lead to communication disruptions and incomplete system states.
Innovation Solution
A modular access control system using domain objects and link selectors to establish relationships between resources, allowing for efficient communication and configuration by specifying how a target resource is to be controlled, ensuring compatibility and preventing misconfiguration through exclusive contracts and atomic configuration functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a modular access control system with link selectors and domain objects is implemented, then configuration complexity is reduced and compatibility is improved, but device complexity increases due to the introduction of contracts and resource allocation mechanisms
Solution Approach 1:
The system segments the access control architecture into distinct domain objects (hardware domain, logical domain, application domain) with clear interfaces. Each domain object is self-contained with specific responsibilities, allowing independent development, testing, and deployment. The link selector mechanism further segments the configuration process into discrete, manageable units that can be composed systematically.
Solution Approach 2:
The contract-based interface definition enables universal communication protocols that work across different device types and manufacturers. The resource contract framework provides a unified mechanism for handling various resource allocation scenarios (exclusive access, shared access, hierarchical access) through a common paradigm, reducing the need for device-specific configuration logic.
2Adaptability or versatility
If manual configuration of device relationships is required, then flexibility is maintained, but misconfiguration risks increase and system reliability decreases
Solution Approach 1:
The system implements automated feedback mechanisms where the controller validates configuration instructions against defined contracts before execution. The link selector queries the contract database to verify compatibility, and the system monitors resource allocation states to detect and prevent conflicting configurations. This automated validation feedback loop maintains reliability while preserving configuration flexibility.
Solution Approach 2:
Configuration contracts and resource allocation rules are defined and validated in advance before actual device pairing occurs. The system pre-establishes the framework for resource sharing and access control policies, allowing configuration instructions to be executed safely without real-time validation complexity. This preliminary structuring prevents misconfiguration while maintaining operational flexibility.
3Reliability
If comprehensive resource control mechanisms are implemented, then system integrity is improved, but processing overhead and memory usage increase
Solution Approach 1:
Resource contracts and access control policies are compiled and cached in advance during system initialization or configuration phases. The controller stores pre-validated contract definitions and resource allocation rules in memory, eliminating the need for complex real-time validation computations during operational resource allocation. This preliminary preparation reduces processing overhead while maintaining comprehensive integrity checks.
Data Source
Figure 1
Figure 2A~2B
Figure 3A
AI summary
A device may include a memory storing instructions and a processor configured to execute the instructions to receive an instruction from an administration device; identify a link selector in the instruction, wherein the link selector corresponds to an attribute of a first domain object that specifies how a target resource of a second domain is to be controlled by the first domain object; and query a database of contracts to determine that target resource is able to fulfill the contract, based on contracts associated with the target resource. The processor may be further configured to generate a resource contract between the first domain object and the target resource of the second domain object and enable the first domain object to communicate with the target resource of the second domain object in accordance with the generated resource contract.