IED User Authentication Module for Access Control
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Solution Overview
Problem
Intelligent electronic devices (IEDs) lack effective user authentication mechanisms, allowing unauthorized access that can lead to incorrect or corrupted data and potential damage, necessitating a solution to protect user-selectable operational features.
Innovation Solution
Incorporating a user authentication module with a database of authorized users and biometric or ID card readers, along with a communication module for remote authentication and image capture, to ensure only authorized personnel access sensitive features of IEDs like digital power and energy meters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional means for managing and controlling electrical power are used, then the device is simple and easy to operate, but the device lacks user authentication capabilities allowing unauthorized access to operational features
Solution Approach 1:
The IED is divided into multiple functional modules including metering module, processing module, user interface module, and user authentication module. Each module performs a specific function, allowing the system to gain authentication capabilities without completely redesigning the entire device.
Solution Approach 2:
The user authentication module integrates multiple authentication methods (biometric sensors, ID card readers, keypads) into a single module, providing universal access control across different operational features of the IED while maintaining a compact structure.
2Reliability
If user authentication capabilities are added to protect operational features, then data accuracy and security are improved, but the device complexity increases
Solution Approach 1:
The user authentication module acts as an intermediary between users and the operational features of the IED. It verifies user credentials and controls access to sensitive functions, preventing unauthorized access without requiring changes to the core metering and processing functions.
Solution Approach 2:
The authentication module autonomously handles user verification by comparing provided credentials against stored authentication data, making access control decisions without requiring external intervention or complex centralized authentication systems.
3Object-affected harmful factors
If biometric sensors and ID card readers are integrated for user authentication, then unauthorized access is prevented, but the device complexity and manufacturing cost increase
Solution Approach 1:
The authentication module supports multiple authentication methods (biometric, ID card, keypad) that can be selectively activated based on security requirements and manufacturing constraints, allowing flexible deployment from basic to advanced security configurations.
Solution Approach 2:
The system stores authentication data (biometric templates, ID card information) in a database within the IED, creating local copies of user credentials that enable fast verification without requiring continuous connection to centralized authentication servers or complex hardware infrastructure.
4Loss of information
If access control is implemented to protect operational features, then data integrity is maintained, but the ease of operation decreases due to authentication requirements
Solution Approach 1:
User authentication is performed in advance before access to operational features is granted. The system pre-loads authentication data into its database and prepares verification routines, so that when a user attempts to access protected functions, the authentication process is already optimized and ready, minimizing operational delays.
Data Source
AI summary
An intelligent electronic device (IED) includes a user authentication module configured for authenticating authorized users of the IED and preventing an access by non-authorized personnel to a user-selectable portion of operational features of the IED. In exemplary embodiments, the user authentication module includes a database of information authenticating an authorized user and a sensor acquiring user-identifying information (e.g., a biometric sensor, a reader of magnetic, holographic, RFID, or smart ID cards, or a keypad). In one application, these techniques are implemented in IEDs such as electrical power and energy meters and used to control access to reset, configuration, billing, communication, and data acquisition/processing functions of the meters.