AC Outlet Sensor for Remote Appliance Status Monitoring
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Solution Overview
Problem
Current home automation systems face challenges in verifying the on-off status of AC powered appliances remotely, require expensive and complex wiring setups, and are costly to customize and maintain, limiting their widespread adoption due to the need for neutral wires and safety certifications.
Innovation Solution
The integration of add-on devices with relays and AC current sensors into standard electrical switches and outlets, allowing for remote operation and status verification through IR or RF communication, without direct exposure to live AC power lines, enabling low-cost, mass-produced solutions that are compatible with existing infrastructure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If home automation systems use custom designed AC electrical switches and outlets with direct exposure to live AC power lines, then reliable remote control and status monitoring is achieved, but the cost of testing, approval and certification increases significantly
Solution Approach 1:
The patent introduces an intermediary device that couples to the appliance through the existing two-wire switch circuit without direct exposure to live AC power lines. This intermediary contains the relay and status sensing components, isolating them from direct AC line exposure while still enabling reliable remote control and status monitoring functions.
Solution Approach 2:
The system is segmented into separate functional components: the existing manual switch, the add-on intermediary device with relay and sensor, and the remote control interface. This segmentation allows the critical components to avoid direct AC exposure while maintaining system functionality.
2Reliability
If home automation systems require changes to standard electrical wiring to include neutral wires, then proper grounding and safety are improved, but the installation complexity and cost increase
Solution Approach 1:
The intermediary device is designed to work with the universally common two-wire switch circuit found in most buildings. It performs multiple functions (switching, status sensing, communication) within a single component that interfaces with existing wiring, eliminating the need for neutral wire modifications.
Solution Approach 2:
The system utilizes the existing electrical infrastructure and signaling capabilities to provide its own power and communication pathways, eliminating the need for additional wiring modifications. The status sensing is achieved through the existing circuitry without requiring separate neutral connections.
3Device complexity
If remote control devices use one-way control signals without status feedback, then the device complexity is reduced, but the ability to verify appliance status is lost
Solution Approach 1:
The intermediary device incorporates status sensing capability that detects the on/off state of the appliance and transmits this information back to the remote control interface. This feedback mechanism provides status verification while maintaining relatively simple system architecture through the use of the existing two-wire communication pathway.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach provides reliable remote control and status monitoring of AC appliances, reduces installation costs, and simplifies the integration of home automation systems into existing electrical setups, making them more accessible and cost-effective while maintaining safety standards.
Implementation Method 1
The relay control and communicator (6WP) includes a relay (6) for switching the AC current to the appliance by making or breaking the electrical circuit
Implementation Method 2
The coil assembly (31) generates an output signal by induction in response to current drain through the AC wire (8)
Data Source
Figure 1A~1D
Figure 2A~2C
Figure 3A~3C
AI summary
A method for adding and connecting a remotely an AC current sesnor to an AC outlet for integrating said AC appliance into an home automation network, and said AC current sensor is similar to a shape and a size of an AC otlet fit for installation into a standard electrical box.