Equipment Access Control via Status-Based Authorization
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Solution Overview
Problem
Access control systems for equipment units managing high electrical currents face challenges in securely managing access, particularly in environments with a large number of potential users, where unauthorized access can lead to electrical shock or arc flash risks.
Innovation Solution
A method and apparatus that authenticate users with both a user credential and equipment authorization, determining access based on the equipment's energized or un-energized and locked or unlocked status, releasing a unit lock only when the user is authenticated and authorized, ensuring safe and secure access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If access control is simplified to allow more users to access equipment units, then ease of operation improves, but electrical safety deteriorates due to increased risk of unauthorized access to energized equipment
Solution Approach 1:
The access control system segments authorization into multiple levels: user authentication (verifying identity) and equipment authorization (verifying permission to access specific equipment under specific conditions). This segmentation allows the system to manage access for a large number of users securely by evaluating multiple authorization criteria rather than using a single simplified access method.
2Object-affected harmful factors
If strict access control measures are implemented to prevent unauthorized access, then electrical safety improves, but device complexity increases due to multiple authentication requirements
Solution Approach 1:
The system performs preliminary actions by determining equipment status (energized/un-energized) and evaluating user authorization before granting access. The processor determines whether the user is authorized to access the equipment unit based on the equipment status, and only releases the unit lock when authorization is confirmed. This preliminary evaluation prevents unauthorized access to energized equipment while maintaining a manageable system architecture.
3Productivity
If the system allows access to energized equipment for operational efficiency, then productivity improves, but safety deteriorates due to increased exposure to electrical hazards
Solution Approach 1:
The access control system dynamically adjusts authorization based on equipment status. The processor determines whether the user is authorized to access the equipment unit with an equipment authorization, and the determination that the user is authorized is based on the equipment status. The system allows access to energized equipment only when the user is specifically authorized for that condition, while preventing access when the equipment is energized and the user is not authorized, thus adapting safety measures to operational requirements.
Data Source
AI summary
For secure and safe access control, a method authenticates a user of an equipment unit with a user credential. The method determines an equipment status for the equipment unit. The equipment status includes one of energized and un-energized and one of locked and unlocked. The method determines whether the user is authorized to access the equipment unit with an equipment authorization. The determination that the user is authorized is based on the equipment status. In response to the user being authenticated and authorized to access the equipment unit energized or the user being authorized to access the equipment unit un-energized and the equipment unit being un-energized, the method releases a unit lock for the equipment unit with a unit lock credential and the user credential.