DC Illumination System State Detection via Power Line Communication
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Solution Overview
Problem
Existing DC concentrated illumination systems face challenges in efficiently detecting the state of individual lamps, including ON/OFF, energy consumption, and temperature, due to complex and costly communication methods that often require additional modules and result in high failure rates and increased costs.
Innovation Solution
A DC concentrated illumination system that uses a DC distribution box and lamp units with a power conversion unit and simulated load unit, where the distribution box converts command specifications into voltage signals transmitted via power lines, allowing for state information collection and two-way communication without additional modules, using a current signal to convey state information back to the distribution box for parsing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional communication modules (wireless or wired) are mounted on lamps for state detection, then state detection capability is improved, but device complexity and cost increase
Solution Approach 1:
The patent combines the communication function with the existing power supply line, merging two functions (power delivery and data communication) into a single infrastructure. This eliminates the need for separate communication modules while enabling bidirectional communication between the distribution box and lamp units.
Solution Approach 2:
The power supply line is made multi-functional by enabling it to carry both electrical power and communication signals. The DC distribution box can send control commands and receive state information through the same power line, making the system more versatile without adding dedicated communication hardware.
2Reliability
If additional communication modules are mounted on lamps, then state detection capability is improved, but cost increases
Solution Approach 1:
The patent combines the communication function with the existing power supply line, merging two functions (power delivery and data communication) into a single infrastructure. This eliminates the need for separate communication modules while enabling bidirectional communication between the distribution box and lamp units.
Solution Approach 2:
The existing power line infrastructure serves dual purposes: delivering electrical power and transmitting communication signals. The system utilizes already-deployed infrastructure rather than requiring additional dedicated communication hardware, thereby reducing overall system cost.
3Device complexity
If power line communication is used for state detection, then device complexity is reduced, but measurement precision and detection capability are limited
Solution Approach 1:
The patent segments the communication protocol into distinct voltage levels representing different state information (ON/OFF, energy consumption, temperature). By encoding multiple parameters through segmented voltage signal characteristics, the system achieves precise detection of various lamp states using simple power line voltage measurements.
Solution Approach 2:
The system changes the voltage parameter of the power line signal to encode communication information. The DC distribution box converts command specifications into voltage signals with varying amplitudes, and parses current signals to extract state information, enabling precise state detection through voltage parameter modulation and demodulation.
Data Source
AI summary
The present disclosure provides a DC concentrated illumination system, including a DC distribution box configured for converting a command specification that controls the state of lamps into a voltage signal with a varying amplitude, and outputting the voltage signal via a power line; and a plurality of lamp units, each includes a lamp, a power conversion unit and a simulated load unit, wherein the power conversion unit is coupled to the lamp and the simulated load unit, and is coupled to the DC distribution box via the power line. The power conversion unit receives the voltage signal and collects the state information of the lamps when the voltage signal matches a preset convention rule successfully; and the power conversion unit controls the action of the simulated load unit to get a current signal, the DC distribution box parses the current signal to obtain the state information of the lamps.