Door Access Control Using Distance-Based Pre-Authentication
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Solution Overview
Problem
Existing access control systems using mobile terminals experience inconvenience due to the time required for establishing a communication connection and obtaining necessary information to open doors, which is slower compared to using conventional card keys.
Innovation Solution
An access control method that determines the distance between a door operating device and a user terminal using signal strength, establishes a communication connection within a predefined distance, and obtains authentication information in stages to expedite the door-opening process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a communication connection is established between the door operating device and the user terminal to obtain authentication information, then access control functionality is enabled, but the time required to open the door increases compared to conventional card keys
Solution Approach 1:
The system performs preliminary actions by establishing communication connection and obtaining authentication information in advance before the user actually needs to open the door. The door operating device continuously monitors for user terminal presence and pre-loads authentication data, so that when the user approaches the door, the authentication process has already been completed or is in progress, significantly reducing the actual door opening time.
Solution Approach 2:
The system dynamically adjusts the authentication process based on real-time conditions. When a user terminal is detected within communication range, the system automatically initiates connection establishment and authentication information retrieval. The process adapts to varying distances and signal conditions, optimizing the balance between security verification and door opening speed.
2Ease of operation
If distance-based communication establishment is implemented to reduce door opening time, then user convenience is improved, but system complexity increases due to multiple distance thresholds and communication protocols
Solution Approach 1:
The system utilizes parameter changes in signal strength and distance measurements to automatically determine when to establish communication connections. By monitoring parameters such as received signal strength indicator (RSSI) and physical distance, the system dynamically adjusts its communication behavior, triggering authentication processes at appropriate distances without requiring complex user input or manual configuration.
Solution Approach 2:
The door operating device performs self-service by automatically detecting user terminal presence, establishing communication connections, and retrieving authentication information without requiring manual user actions. The system autonomously manages the entire authentication workflow based on detected conditions, reducing user burden while maintaining security protocols.
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
This approach reduces the time required to open doors by establishing communication and obtaining necessary information at closer distances, thereby minimizing user inconvenience.
Implementation Method 1
determining a distance to the user terminal based on a received signal strength corresponding to a transmitted signal from at least one of the door operating device and the user terminal
Data Source
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AI summary
One embodiment of the present invention provides an access control method of a door operating device that communicates with a user terminal, the access control method may comprise determining a distance between the door operating device and the user terminal based on a received signal strength corresponding to a transmitted signal from at least one of the door operating device and the user terminal; determining whether the distance between the door operating device and the user terminal is within a first distance; establishing a communication connection between the door operating device and the user terminal when the distance between the door operating device and the user terminal is within the first distance; determining whether the distance between the door operating device and the user terminal is within a second distance; and obtaining open authentication information when the distance between the door operating device and the user terminal is within the second distance.