DC Power Line Communication Voltage Adaptation
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Solution Overview
Problem
In direct current power line communication systems, the variability in drive voltages among electronic devices poses challenges for stable communication, as devices with different voltage requirements necessitate multiple direct current voltage lines, leading to inefficiencies and signal distortion when communicating across different voltage levels.
Innovation Solution
A direct current power line communication apparatus that detects and reports its own voltage level to other devices, allowing for adjustment of signal transmission voltage to match the receiving device's voltage, thereby stabilizing communication by bypassing voltage changing circuits and using capacitors to filter noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If signals are transmitted at higher drive voltages to ensure sufficient signal strength, then signal transmission capability is improved, but signal distortion and noise increase when received by devices with lower drive voltages
Solution Approach 1:
The patent implements dynamic signal voltage adjustment based on the drive voltage of the receiving device. The transmitting device adapts its signal voltage level according to real-time detection of the receiver's capabilities, ensuring signals are transmitted at appropriate voltage levels to avoid distortion while maintaining sufficient transmission strength.
Solution Approach 2:
The patent changes the voltage parameter of transmitted signals based on the receiving device's drive voltage characteristics. By detecting the receiver's drive voltage and adjusting the signal voltage accordingly, the system optimizes the voltage parameter to prevent signal distortion and noise interference.
2Adaptability or versatility
If voltage changing circuits are used to accommodate different drive voltages, then adaptability to different devices is improved, but system complexity and noise interference increase
Solution Approach 1:
The patent extracts and eliminates the voltage changing circuit from the system architecture. Instead of using complex voltage conversion hardware, the system relies on direct voltage matching between transmitting and receiving devices, simplifying the overall system structure while maintaining adaptability through voltage detection and reporting mechanisms.
Solution Approach 2:
The patent creates a universal communication protocol that works across different voltage levels without requiring device-specific voltage conversion circuits. The voltage detection and adaptive transmission mechanism provides multi-functionality, enabling the same simple circuit to operate with devices of various drive voltages.
3Reliability
If voltage detection and reporting mechanisms are implemented, then communication stability is improved, but device complexity increases
Solution Approach 1:
The patent merges the voltage detection and reporting functions into the existing communication protocol and power supply circuitry. The voltage detection utilizes the same power supply path, and the voltage information is transmitted using the existing communication channel, thereby improving communication stability without significantly increasing device complexity.
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
This approach enables stable communication between electronic devices with different drive voltages by adjusting signal voltage based on reported voltage levels, reducing signal distortion and noise interference, and maintaining communication even when voltage levels fluctuate.
Implementation Method 1
using capacitors to filter noise
Data Source
AI summary
Disclosed is a direct current power line communication apparatus, by which communication between electronic apparatuses with a direct current voltage line there between can be stabilized. The direct current power line communication apparatus, i.e., a direct current power line communication apparatus that transmits signals using the direct current voltage line (15a), is provided with: a PLC communication control unit (29), which controls the transmitting unit (27) connected to the direct current voltage line (15a); and a voltage detecting unit (30), which detects the voltage of the direct current voltage line (15a), and notifies the PLC communication control unit (29) of the detected voltage. The PLC communication control unit (29) transmits information, including the voltage information, to other direct current power line communication apparatus via the transmitting unit (27).