IoT Washing Machine Remote Control Termination for Multi-User Security
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Solution Overview
Problem
Existing remote control termination methods for Internet of Things-based washing machines are inefficient, particularly in scenarios where multiple users control the machine simultaneously, or when the mobile terminal is far from the washing machine, leading to potential control issues and energy waste.
Innovation Solution
A method where the washing machine sends termination instructions to connected mobile terminals, allowing them to judge the machine's operational state and maintain or terminate the connection accordingly, ensuring seamless shutdown and prioritizing control among multiple terminals, with automatic reconnection in case of unexpected disconnections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the washing machine shuts down after executing programs, then the channel between the washing machine and mobile terminal is terminated, but control rights cannot be transferred to other controllers
Solution Approach 1:
The system performs preliminary actions by establishing a waiting state before complete shutdown, where the washing machine remains responsive to control transfer requests while terminating the current mobile terminal connection. This allows seamless transition to new controllers without interrupting ongoing programs.
2Adaptability or versatility
If multiple people control the washing machine simultaneously, then control flexibility is improved, but control conflicts and channel management complexity increase
Solution Approach 1:
The control system segments channel management into independent terminal handling units, where each mobile terminal maintains its own communication channel with the washing machine. The control unit independently manages connection establishment, termination, and control right transfer for each terminal, simplifying overall multi-user management.
Solution Approach 2:
The control unit implements universal channel management capabilities that handle multiple mobile terminals through standardized protocols. The same control logic manages connection establishment, termination, and control transfer for all terminals, reducing system complexity despite supporting multiple users.
3Ease of operation
If the mobile terminal is far from the washing machine, then remote control capability is improved, but precise and effective control cannot be realized
Solution Approach 1:
The system uses the washing machine's control unit as an intermediary that receives control instructions from remote mobile terminals, processes them, and executes appropriate commands. This intermediary approach enables precise control execution regardless of the terminal's physical distance, as all control logic resides in the washing machine's control unit.
4Loss of energy
If the washing machine terminates the channel immediately upon shutdown trigger, then energy consumption is reduced, but program execution may be interrupted
Solution Approach 1:
The system dynamically adjusts the shutdown process based on program execution state. When a shutdown trigger is received, the control unit checks whether the current program is complete or ongoing. If ongoing, the system maintains power and channel connectivity until program completion, then terminates both. This dynamic approach balances energy conservation with program reliability.
Data Source
AI summary
A method for terminating remote control over a washing machine wherein when shutdown control over the washing machine is triggered, the washing machine sends an instruction to terminate a channel between the washing machine and a mobile terminal connected with the washing machine, and shuts down. The shutdown control is triggered in a short-range or remote manner. By this method a termination instruction is sent before the washing machine shuts down to terminate a channel between the washing machine and the mobile terminal, it is ensured that the channel between the washing machine and a mobile terminal has already been cut off before the washing machine shuts down, such that the washing machine is no longer controlled by the mobile terminal connected with the washing machine the last time when being turned on next time, for improving security of washing machine control.