Wireless Lighting Receiver Pulsed Listen Mode Standby Power
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Solution Overview
Problem
Conventional remotely controlled lighting devices consume excessive power in standby mode due to continuously active wireless receivers, which is inefficient and does not meet current regulations for low power consumption.
Innovation Solution
Implementing a pulsed listen mode for the wireless receiver, where it alternates between active and non-active phases, synchronized with the zero crossing of the supply voltage, and powering it with an auxiliary supply to minimize power consumption when not emitting light, allowing the receiver to activate the driver only upon receiving control signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the wireless receiver is continuously active to receive control signals, then the lighting device can reliably receive control signals from the wireless controller, but the power consumption in standby mode becomes excessive
Solution Approach 1:
The wireless receiver operates in periodic listen mode, alternating between active listening phases and inactive sleep phases. During active phases, the receiver can detect control signals from the wireless controller; during inactive phases, power consumption is minimized. This periodic operation resolves the contradiction by enabling reliable signal reception only when necessary while reducing overall power consumption in standby mode.
Solution Approach 2:
The wireless receiver dynamically adjusts its operational state between active and inactive modes based on whether control signals are being transmitted. The system transitions from a static continuous operation mode to a dynamic mode where the receiver's state changes according to communication needs, thereby optimizing the balance between reception reliability and power consumption.
2Ease of operation
If the wireless receiver is activated during standby mode to receive control signals, then the lighting device can be controlled wirelessly, but the power consumption exceeds regulatory thresholds
Solution Approach 1:
The receiver is activated periodically in short listening intervals during standby mode, allowing wireless control signals to be received while keeping the overall power consumption within regulatory thresholds. The periodic activation pattern ensures that the receiver is available when needed but remains inactive for most of the standby period.
Solution Approach 2:
The system changes the operational parameters of the wireless receiver, specifically the duty cycle of activation, to optimize the balance between wireless control capability and power consumption. By adjusting the duration and frequency of active listening phases, the system maintains ease of operation while complying with power consumption regulations.
Data Source
AI summary
A lighting device arranged to be controlled via a wireless controller, wherein said lighting device comprises a light emitting load arranged for emitting light, a driver arranged for receiving a supply voltage and for driving said light emitting load based on said received supply voltage, an auxiliary supply arranged for supplying an auxiliary Direct Current, DC, supply voltage, a wireless receiver, connected to and powered by said auxiliary supply, arranged for wirelessly receiving, from said wireless controller, a control signal, and for activating said driver based on said received control signal, wherein said wireless receiver is arranged to operate according to a pulsed listen mode, said pulsed listen mode comprising active phases in which said wireless receiver is able to receive said control signal and non-active phases in which said wireless receiver is not able to receive said control signal.