Remote Switch Control Device Using Power Line Communication
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Solution Overview
Problem
Existing switching systems for remotely controlling electrical appliances require multiple wires and unlimited local access to a power supply, making them cumbersome and difficult to install, especially in spaces with limited access to power lines.
Innovation Solution
A switching system utilizing a break-before-make electromechanical switch and a remote switch control device that operates on a single power line, allowing for activation and deactivation of electrical appliances with reduced wire usage and no need for additional power lines, using a shaping circuit and detection circuit to manage power interruptions and communicate through the power line.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a wireless controlled switching system is used, then local access to power supply is unlimited, but additional cables are required for wired control
Solution Approach 1:
The patent combines the power supply line and control signal transmission into a single wire system. The switching control device communicates with the electrical appliance through the existing power line, eliminating the need for separate control cables while maintaining wired control functionality.
Solution Approach 2:
The power line serves multiple functions: it provides both power supply to the electrical appliance and carries control signals for switching operations. This multi-functional use of the single wire reduces the quantity of cables required in the system.
2Reliability
If a wired-controlled switching system is used, then control stability is improved, but additional cables are required for control
Solution Approach 1:
The control signals are merged into the existing power line transmission. The switching control device modulates the power line to carry control information, achieving stable wired control without requiring additional control cables separate from the power supply line.
3Quantity of substance
If a single line power control system is used, then wire requirements are reduced, but power disturbances affect system reliability
Solution Approach 1:
The system incorporates a detection circuit that monitors power line conditions and a shaping circuit that prepares control signals in advance. These circuits compensate for power disturbances by detecting anomalies and adjusting control signal timing, ensuring reliable operation despite variations in power line quality.
Solution Approach 2:
The detection circuit continuously monitors the power line status and provides feedback to the switching control device. This feedback mechanism allows the system to adapt to power disturbances by adjusting control signal generation, maintaining reliability despite using a single wire for both power and control.
Data Source
Figure 1a~2
Figure 3~4
Figure 5~7
AI summary
The invention concerns a switching system (6) for activating and deactivating of an electrical appliance (100) comprising a remote switch control device (9) that comprises a first terminal (90) electrically connected to a first power line (8), a second terminal (91) electrically connected to a second power line (7), and a third terminal (92) connectable to an electrical 5 terminal of the electrical appliance. The remote switch control device (9) is configured to modify the electrical connection between the first and the third terminal (90, 92) in response to a detection of an attenuation of an electrical parameter between the first and second terminals (90,91) caused by a electromechanical switch (1) configured to be manually actionable by 10 a user. The invention further concerns the remote switch control device (9) and a method for installing a switching system using the remote switch control device (9) and the electromechanical switch.