Dimmable Wall Plug Switching for Mixed Appliance Safety
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Solution Overview
Problem
Home users face risks when connecting the wrong type of electrical equipment to wall plugs in home automation systems, as existing solutions lack effective methods to prevent erroneous connections between non-dimmable appliances and dimmer wall plugs, potentially damaging the equipment.
Innovation Solution
A wall plug design with a device body, protruding electrodes, detecting means, switching means, and a control unit that allows users to indicate if an electrical appliance is dimmable or non-dimmable, setting the switching mode accordingly, and maintaining the setting even when the appliance is disconnected, using interface means and communication protocols for user-friendly operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the wall plug is configured to allow dimming of a luminaire, then sophisticated electronic control is achieved, but connecting other equipment may have unpleasant consequences possibly destroying the wall plug and/or the connected equipment
Solution Approach 1:
The wall plug automatically detects the type of connected electrical appliance using detecting means and configures its switching means accordingly without requiring manual user input. The system serves itself by autonomously identifying whether the connected load is dimmable or non-dimmable and adjusting its operational mode to prevent damage
Solution Approach 2:
The wall plug incorporates detecting means that provide feedback about the connected electrical appliance type to the control unit. This feedback mechanism enables the system to continuously monitor and adjust its switching mode based on the actual connected load, ensuring safe operation while maintaining dimmable capability when appropriate
2Reliability
If the wall plug automatically detects appliance type, then equipment safety is improved, but device complexity increases
Solution Approach 1:
The wall plug integrates multiple functions into a single device: it serves as both a simple power switch and a dimmer controller, while also incorporating automatic appliance type detection. The switching means can operate in multiple modes (on/off and dimming) based on the connected load, eliminating the need for separate detection devices or manual configuration systems
3Ease of manufacture
If the wall plug requires user input to configure dimming mode, then ease of manufacture is improved, but ease of operation deteriorates
Solution Approach 1:
The wall plug eliminates the need for manual user configuration by automatically detecting the appliance type and configuring its own switching mode. The detecting means and control unit work together to autonomously determine whether to operate in dimmable or non-dimmable mode, completely removing the burden of manual setup from the user
Data Source
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AI summary
The present invention relates to a wall plug (100) being removably connectable to an electrical outlet, such as the mains. The wall plug (100) comprises detecting means (112) for determining if the electrical appliance is plugged-in to the electrode receiving wells (110), switching means (114) adapted to control power delivery to the electrical appliance at the electrode receiving wells (110), interface means (118,120), and a control unit (122). The control unit (122) is adapted to receive, using the detecting means (112), an indication that the electrical appliance is plugged-in to electrode receiving wells (110), receive, using the interface means (118,120), a first instruction defining if the electrical appliance is dimmable or non-dimmable, setting the switching means (114) to be dimmable or non- dimmable based on the received instruction, and setting the switching means (114) to be non-dimmable if receiving an indication from the detecting means (112) that the electrical appliance is unplugged from the electrode receiving wells (110). The invention also relates to a method for operating such a wall plug and to a computer program product.