Electronic Key Access Control With Configurable Validity Checks
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Solution Overview
Problem
Existing access control systems face limitations in flexibility, security, and convenience due to mechanical key switches, electronic keys, and password-based systems, with programmable systems requiring significant effort and lacking user-friendly configuration options.
Innovation Solution
An access control system with an access control unit that reads electronic key data, allowing configurable validity criteria, including checksum checks and logic functions, to determine key validity and send control signals directly to the system's controller, enabling flexible and secure access management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If mechanical key switches are used for access control, then different access permissions can be assigned based on rotational and detent positions, but the number of different access permissions is limited by the limited number of rotational and detent positions
Solution Approach 1:
The patent replaces the mechanical key switch system with an electronic key system. The electronic key contains an identifier that can be read by the access control unit, eliminating the need for mechanical rotational and detent positions. This substitution dramatically increases the number of possible access permissions while reducing mechanical complexity.
Solution Approach 2:
The patent changes the parameter space from limited mechanical positions to virtually unlimited electronic identifiers. By storing identifiers in electronic memory rather than mechanical configurations, the system can support a much larger number of distinct access permissions without increasing physical complexity.
2Adaptability or versatility
If electronic keys with additional stored information are used to create different access codes, then more access permissions can be created, but the system requires programming effort in the control unit
Solution Approach 1:
The patent extracts the access control logic from the main system controller and places it in a dedicated access control unit. This separate unit is specifically designed to read electronic key identifiers and determine access permissions, eliminating the need to program the main controller for access control functionality.
Solution Approach 2:
The patent introduces an intermediary access control unit that sits between the electronic key and the main controller. This intermediary handles all access control operations, including reading key data, validating identifiers, and determining access permissions, thereby shielding the main controller from programming complexity.
3Adaptability or versatility
If password-based access control is used to create virtually unlimited passwords, then access points can be expanded, but users cannot remember unlimited passwords and often share them, rendering them insufficient for secure access protection
Solution Approach 1:
The patent uses electronic keys that contain stored identifiers rather than requiring users to remember passwords. The access control unit reads the identifier directly from the electronic key, ensuring secure access without relying on user memory or password security. This eliminates the problems of password sharing and forgetting while maintaining unlimited access point capability.
Data Source
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Figure 3
AI summary
The invention relates to an access system (1) for controlling access to a system (3) controlled by a controller (2). This is achieved by means of an access system (1) with an access control unit (4) and at least one electronic key (5). The access control unit (4) is configured to read key data stored in an electronic key (5). Criteria can be specified in the access control unit (4) according to which the validity of the read key data from this electronic key (5) is determined. Upon detection of a valid electronic key (5), the access control unit (4) sends at least one signal to the controller (2).