AC Relay Integration with Optical Signal Isolation
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Solution Overview
Problem
Current home automation systems face challenges in verifying the on-off status of remotely operated appliances and reporting real-time power consumption due to limitations in existing electrical wiring and safety codes, which restrict the integration of low-voltage control signals with AC power systems, leading to unreliable remote control and consumption reporting.
Innovation Solution
The integration of AC power SPDT relays and current sensors with manually actuated SPDT switches using lightguide or fiber optic cables, allowing for bidirectional communication and power consumption monitoring through a dedicated controller, enabling reliable remote operation and real-time status reporting without requiring additional electrical boxes or complex wiring modifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If AC power wires are mixed with low voltage control wires in the same electrical box or conduit, then integration of control and power systems is achieved, but electrical safety codes and building regulations are violated
Solution Approach 1:
The patent divides the electrical system into separate functional modules: AC power switching devices operate independently from low-voltage control devices. Each device type remains in its own electrical box, maintaining code compliance while achieving system integration through coordinated operation rather than physical mixing.
Solution Approach 2:
The patent introduces intermediary components such as separate control circuits and isolation barriers that enable communication between AC power devices and low-voltage control devices without direct physical connection. This mediator approach allows system integration while maintaining the safety separation required by electrical codes.
2Reliability
If custom electrical wiring systems are designed to enable two-way communication for status reporting, then real-time appliance status monitoring is achieved, but installation cost and system complexity increase significantly
Solution Approach 1:
The patent makes existing standard electrical wiring serve multiple functions: the same AC power lines that deliver electricity also carry control signals and status information. This eliminates the need for separate dedicated communication wiring while achieving real-time monitoring capabilities.
Solution Approach 2:
The patent enables appliances to automatically report their own status (on/off, operational state) back to the control system without requiring manual verification or additional sensing infrastructure. The system self-monitors through integrated feedback circuits that utilize existing wiring infrastructure.
3Ease of operation
If standard two-wire AC electrical systems are used, then simplicity of existing wiring is maintained, but ability to provide remote control and status verification is limited
Solution Approach 1:
The patent transforms static two-wire AC systems into dynamic communication channels by enabling bidirectional signal flow. The same wires that previously only delivered power now also carry control commands from remote devices and status information back to the control system, adding functionality without adding wires.
Solution Approach 2:
The patent changes the electrical parameters of the existing wiring system by superimposing low-voltage control signals on top of the high-voltage power lines. Through parameter modulation and frequency separation, the system enables dual functionality (power delivery and data communication) using the same physical infrastructure.
Data Source
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AI summary
A method and a device for joining a remotely controlled switching and current sensing AC device structured for attachment to standard and popular three way SPDT AC switches or cross DPDT AC switches and/or power outlets, such that the front wall plate of a single gang electrical box will cover the joined AC device with the manual switch or the AC outlet. The AC device is operated and communicates via lightguide or fiber optic cable using two way optical signals and via IR in air in line of sight and/or via RF in air. The lightguide is cascaded in series from one AC device to another and/or from a joint switch device to a joined AC outlet and to an optoport in front of an outlet socket for communicating the current drain and/or operation controls with the appliance, powered by the AC socket, via a lightguide included in the power cable with plug assembly of the appliance.