Fingerprint IoT Switch with MAC Layer Connectionless Control
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Solution Overview
Problem
Conventional IoT devices controlled through Wi-Fi often require complex application interfaces and traditional mechanical switches, which are inconvenient and inflexible, and may consume excessive energy due to the need for re-establishing Wi-Fi links for each control action, especially in scenarios requiring permission distinction for multiple devices.
Innovation Solution
A Wi-Fi IoT switch utilizing fingerprint identification for permission control, implementing a connectionless communication mechanism between a wire-free fingerprint module and standard Wi-Fi IoT devices, allowing for low power consumption switching control with specific permissions through unicast or broadcast packets without MAC layer connection, enabling flexible and secure control of multiple devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If Wi-Fi link-based control mode is used for IoT devices, then control reliability is improved, but energy consumption increases due to frequent link re-establishment
Solution Approach 1:
The patent extracts the control command transmission from the traditional Wi-Fi link-based communication framework and implements it through MAC layer broadcast/unicast frames. This separation allows control commands to be transmitted independently without establishing full Wi-Fi links, thereby reducing energy consumption while maintaining control reliability through direct MAC layer delivery.
Solution Approach 2:
The patent introduces MAC layer broadcast/unicast frames as an intermediary mechanism between the controller and controlled devices. These frames serve as a lightweight communication medium that enables control commands to be transmitted without the overhead of establishing complete Wi-Fi links, thus resolving the contradiction between reliability and energy consumption.
2Adaptability or versatility
If application interface control mode is used for IoT devices, then control functionality is improved, but system complexity increases due to complex interfaces and wiring
Solution Approach 1:
The patent extracts the control functionality from complex application interfaces and mechanical switches, implementing it directly through MAC layer control frames. This eliminates the need for complex software interfaces and physical wiring, reducing system complexity while preserving control versatility through flexible frame-based commands.
Solution Approach 2:
The patent replaces mechanical switches and application interface controls with MAC layer control frames. This substitution eliminates physical wiring and complex software interfaces, reducing system complexity while maintaining control functionality through standardized wireless MAC layer protocols.
3Ease of operation
If non-standardized frequency band control is used for wire-free switches, then positioning flexibility is improved, but signal interference increases
Solution Approach 1:
The patent utilizes the standardized Wi-Fi frequency bands and MAC layer protocols to enable wire-free switch control. By leveraging the universally adopted Wi-Fi standard, the system achieves positioning flexibility while avoiding signal interference through standardized frequency usage and protocol compliance, rather than using non-standardized bands.
Data Source
AI summary
The present invention relates to an IoT control switch and method based on fingerprint identification permission control, comprising performing user identity and permission verification through fingerprint identification, implementing a MAC layer connectionless communication mechanism between a wire-free fingerprint Wi-Fi IoT switch and a standard Wi-Fi IoT device, and carrying control information for controlling the Wi-Fi IoT device by a privately defined control information element in a unicast packet or broadcast packet without requiring a MAC layer connection; the invention requires little modification, is cost effective to implement, and the data type, manner of acknowledgement, manner of encryption, and different fingerprint security control modes may be freely combined with each other, thereby providing wide applicability. The wire-free fingerprint Wi-Fi IoT switch may complete the translation of control information to the standard Wi-Fi IoT device by sending least number of packets, so as to realize low power consumption control. The wire-free fingerprint Wi-Fi IoT switch may also connect to an internet server via a Wi-Fi access point to perform update and upgrade of firmware, fingerprint feature information list, etc.