Wireless Key Sporadic Transmission for Energy Efficiency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing access control systems using active transponders for secure access face high energy consumption due to continuous data transmission, which reduces battery life and increases costs, while also being vulnerable to manipulation and unauthorized access.
Innovation Solution
A wireless electronic key system that transmits data signals sporadically and irregularly, reducing cumulative active transmission time and energy consumption, with a primary authentication phase for secure initialization and a presence check phase that maintains security without continuous data exchange, using a pseudo-random number generator to determine transmission times and intervals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous data transmission is used for secure access control, then security against tampering is improved, but energy consumption increases
Solution Approach 1:
The patent applies periodic action by transmitting data signals at irregular time intervals rather than continuously. The transponder sends authentication signals periodically at pseudorandom intervals, which maintains security through continuous verification capability while significantly reducing energy consumption compared to continuous transmission.
Solution Approach 2:
The patent changes the transmission parameter from continuous to irregular periodic intervals. By using a pseudorandom number generator to determine transmission timing, the system maintains security through unpredictable transmission patterns while reducing the total transmission time and energy consumption.
2Reliability
If active transponders with continuous transmission are used, then access security is improved, but battery life decreases
Solution Approach 1:
The patent extends battery life by implementing periodic transmission at irregular intervals. The transponder maintains security through periodic authentication signals while consuming much less energy than continuous transmission, thereby extending the operational lifetime of the battery-powered device.
Solution Approach 2:
The patent uses preliminary action through a challenge-response authentication mechanism where the base station sends challenges and the transponder responds with authentication signals. This preliminary verification process ensures security without requiring continuous transmission, allowing the system to maintain security levels while reducing energy consumption to extend battery life.
3Device complexity
If regular time intervals for data transmission are used, then system simplicity is improved, but vulnerability to manipulation increases
Solution Approach 1:
The patent applies asymmetry by using irregular, pseudorandom time intervals for data transmission instead of regular intervals. This asymmetric transmission pattern makes the system more resistant to manipulation and prediction attacks, while the complexity of generating pseudorandom numbers is managed through efficient algorithms and remains practical for implementation.
Data Source
Figure 1
Figure 2~3
AI summary
The system has a base station (1) i.e. Universal serial bus (USB)dongle, controlling access on an object based on data signals. The base station receives the signals from a wireless electronic key. The key transmits a sequence of the data signals. Time is divided into equal large intervals with a preset time duration. Each interval is divided into a preset number of sub intervals. The signals of the sequence are transmitted at transmission time points. The sub intervals are psuedorandomly selected as a time space within each interval and lie within the transmission time points. An independent claim is also included for a method for securing an access and/or entry on and/or into an object.