Lighting Circuit Overload Warning via Flashing and Auto Shutdown
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Solution Overview
Problem
Existing lighting fixtures, especially outdoor ones, face challenges in detecting when the circuit's rated current limit is reached due to multiple lamps with different wattages being connected, making it difficult for users without electrical knowledge to determine the safe number of lamps to install, and there's no immediate alert for overload.
Innovation Solution
A real-time warning system using a current detection component and control component to monitor current thresholds, periodically flashing lamps to indicate overload and permanently shutting off power if necessary, ensuring safe operation within rated current ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple lamps with different wattages are connected to the same circuit in lighting fixtures, then the lighting coverage and flexibility are improved, but it becomes impossible to immediately detect when the circuit's rated current limit is reached
Solution Approach 1:
The patent implements a feedback mechanism by using a current detection component to continuously monitor the current on the power supply line and feed this information to a control component. The control component compares the detected current against a preset threshold and triggers appropriate responses (flashing warning or permanent shutdown), thereby resolving the inability to detect overload conditions in circuits with multiple lamps of different wattages.
Solution Approach 2:
The patent introduces an intermediary overload warning and protection device between the power supply and the lighting devices. This intermediary device includes a current detection component, a control component, and a switching element that mediates the power flow, detecting overload conditions and controlling the power supply to prevent damage while allowing flexible lamp configurations.
2Adaptability or versatility
If users without electrical knowledge install multiple lamps with different wattages, then the lighting coverage is improved, but they cannot determine the safe number of lamps to install
Solution Approach 1:
The patent enables the system to self-monitor and self-protect by automatically detecting current levels and triggering warning or shutdown actions without requiring user calculation or electrical knowledge. The device serves itself by providing real-time feedback through lamp flashing warnings and automatic protection through permanent shutdown, eliminating the need for users to determine safe installation limits.
Solution Approach 2:
The system provides immediate visual feedback through flashing lamp warnings when approaching overload conditions, allowing users to understand system status without electrical knowledge. This feedback mechanism guides user behavior and ensures safe operation while maintaining installation flexibility.
3Device complexity
If the circuit operates without immediate overload alert, then the system simplicity is maintained, but equipment damage and safety hazards occur
Solution Approach 1:
The patent implements preliminary action by detecting current levels before damage occurs and triggering warning signals (flashing lamps) when approaching the threshold. This preliminary warning allows users to take corrective action before actual damage happens, while the permanent shutdown function provides final protection. The system adds minimal components (current detection component, control component, switching element) to achieve this protective function.
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
Provides immediate overload warnings through lamp flashing and ensures safe operation by cutting power when current exceeds safe limits, preventing equipment damage and ensuring user safety.
Implementation Method 1
a current detection component located on the power supply line and adapted for detecting a current on the power supply line to generate a current detection signal
Implementation Method 2
The control component is adapted to receive the current detection signal and control the conduction state of the switching element according to the current detection signal
Data Source
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AI summary
An overload warning and protection device (100) suitable for a lighting control system (20) including a power supply (22), a lighting device (24) and a switching element (26) is disclosed to include a current detection component (120) and a control component (140). When the control component (140) detects that the current (I1) is greater than the first threshold current (Is1) and continues to exceed the first preset time (td1), the control component (140) periodically turns off and on the switching element (26), causing the lighting device (24) to flash to remind the user. When the control component (140) detects that the current (I1) is greater than the second threshold current (Is2), the control component (140) permanently shuts down the switching element (26) and cuts off the power supply (22) for protection.