Smart Switch Module Detecting Load State via Waveform Analysis
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Solution Overview
Problem
The installation of smart switches in homes built before the advent of smart switch technology can be time-consuming and error-prone, especially in three-way or multi-way switch configurations, due to the lack of compatible electrical box configurations, leading to risks of non-functional results or damage.
Innovation Solution
A modular, smart electrical control system that connects to existing wiring, automatically determines the state of the load, and functions correctly in various configurations, comprising a switch module with traveler lines and a detector circuit that identifies waveform patterns to determine the load state, and a user interface module that adjusts its display based on this information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional smart switches are installed in pre-existing three-way or multi-way configurations, then smart switch functionality is achieved, but installation becomes time-consuming and error-prone due to incompatible electrical box configurations
Solution Approach 1:
The switch module is designed to function universally across multiple wiring configurations (three-way, multi-way, single-pole) without requiring different hardware models. The detector circuit automatically identifies the specific configuration and adapts the switching logic accordingly, allowing one device to replace multiple configuration-specific switches.
Solution Approach 2:
The system performs self-identification and self-configuration through the detector circuit that automatically analyzes the electrical box wiring configuration. This eliminates the need for installers to manually configure the switch for different wiring scenarios, making installation as simple as connecting the wires and allowing the device to adapt itself.
2Adaptability or versatility
If traditional smart switches are installed in pre-existing three-way or multi-way configurations, then smart switch functionality is achieved, but installation becomes error-prone with risks of non-functional results or damage
Solution Approach 1:
The detector circuit performs preliminary analysis of the wiring configuration before the switching logic is activated. By identifying the electrical box configuration (three-way, multi-way, or single-pole) in advance, the system prepares the appropriate control logic, preventing incorrect operations that could lead to functional failures or safety issues.
Solution Approach 2:
The detector circuit continuously monitors the electrical signals on the traveler lines and common lines to verify the load state and configuration. This feedback mechanism allows the system to detect and correct potential errors in real-time, ensuring reliable operation and preventing damage from incorrect switching actions.
3Extent of automation
If existing wiring configurations are analyzed to determine load state, then automatic operation is achieved, but signal detection complexity increases
Solution Approach 1:
The system replaces manual configuration procedures with automated electrical signal analysis. Instead of requiring installers to physically trace wires and configure switches for different configurations, the detector circuit automatically identifies the wiring topology by analyzing the electrical characteristics of the traveler and common lines.
Solution Approach 2:
The detector circuit exploits changes in electrical parameters (voltage, current, impedance) that occur naturally in different wiring configurations and load states. By monitoring these parameter variations on the traveler and common lines, the system distinguishes between three-way, multi-way, and single-pole configurations without requiring additional hardware or complex processing.
Data Source
AI summary
A method of controlling an electrical control system, the system including a switch module to control power delivery from a power source to at least one load, the switch module including first and second traveler lines to connect the switch module to a load or to a corresponding switch in a three-way configuration, the method including receiving, at the switch module, a first signal from the first traveler line, receiving, at the switch module, a second signal from the second traveler line, receiving, at the switch module, a third signal from a common line, where the common line is connected to the load or the power source, identifying a waveform pattern based on the first signal, second signal and third signal, determining a state of the load based on the identified waveform pattern, and controlling a display of a user interface based on the determined state of the load.