Switching Actuator Reduces DALI Standby Energy
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Solution Overview
Problem
Modern lighting systems using the Digital Addressable Lighting Interface (DALI) face high energy consumption in standby mode due to continuous energy supply to electronic control gear, leading to inefficiencies, especially in large systems, and manual or time-based isolation methods complicate activation during exceptions.
Innovation Solution
A switching actuator with an energy supply input, output, signal line inputs, and an evaluation unit that activates or deactivates energy supply based on signals, allowing only necessary consumers to be powered, reducing standby energy consumption by integrating with existing DALI systems and enabling bidirectional communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If ECGs are continuously supplied with energy to maintain communication readiness, then the system responds quickly to DALI commands, but energy consumption increases significantly in standby mode
Solution Approach 1:
The switching actuator performs preliminary actions by continuously monitoring the DALI control line for activation signals and pre-charging capacitors or maintaining minimal power to ECGs before actual activation is needed, enabling fast response without continuous full power supply
Solution Approach 2:
Instead of continuous energy supply, the system uses periodic monitoring of the DALI line and periodic activation of ECGs only when signals are detected, converting continuous energy consumption into periodic, signal-triggered energy supply while maintaining system responsiveness
2Use of energy by moving object
If manual or time switches are used to isolate lighting systems from power supply to save energy, then energy consumption is reduced, but operational convenience deteriorates due to additional working steps required for activation
Solution Approach 1:
The switching actuator enables the lighting system to self-manage its power supply by autonomously monitoring the DALI control line and automatically activating or deactivating ECGs based on detected signals, eliminating the need for manual intervention while maintaining energy efficiency
Solution Approach 2:
The system continuously monitors the DALI control line for activation signals and uses this feedback to automatically control the switching actuator, which in turn controls power supply to ECGs, creating a closed-loop system that responds automatically to operational needs
3Ease of operation
If all system components are supplied with energy during conventional usage times, then the system is fully operational, but unused components in standby mode cause additional energy consumption
Solution Approach 1:
Instead of uniformly supplying power to all ECGs, the switching actuator applies local quality control by selectively activating only those specific ECGs that have received activation signals on the DALI line, leaving other components in a low-power state while maintaining overall system availability
Data Source
AI summary
A switching actuator for controlling the energy supply to at least one electrical consumer (102) with an energy supply input (142), an energy supply output (144), a signal line input (146), a signal line output (148) and an evaluation unit (154), the evaluation unit (154) being adapted to activate or deactivate the energy supply output (144) on the basis of signals input via the signal line input (146).