Cascade-Connected Power over APIX Nodes With Signal Distortion Correction
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Solution Overview
Problem
In vehicular apparatuses, the existing Power over APIX communication system requires redundant wiring and multiple communication ports for ECU control of multiple slaves, leading to increased complexity and cost.
Innovation Solution
A communication system where a master and multiple slaves are cascade-connected through a single communication line used as both a feeder and communication line, with each node connected via an inductor for power and AC coupled for bidirectional communication, incorporating a signal distortion correction circuit to address magnetic saturation-induced signal distortions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If Power over APIX is used to control multiple slaves from one ECU, then communication functionality is achieved, but wiring becomes redundant and multiple communication ports are required in the ECU
Solution Approach 1:
The patent combines power supply and communication functions into a single communication line. Multiple slaves are cascade-connected through this shared line, eliminating the need for separate power wires and multiple communication ports in the ECU, thus reducing wiring complexity while maintaining communication versatility
Solution Approach 2:
The communication line serves multiple functions simultaneously: it acts as both a power supply line and a communication signal transmission line. This multi-functionality allows the system to control multiple slaves from one ECU using a single cable, reducing the need for additional communication ports and simplifying the overall wiring structure
2Adaptability or versatility
If Power over APIX is used to control multiple slaves from one ECU, then communication functionality is achieved, but multiple communication ports should be prepared in the ECU
Solution Approach 1:
The communication line serves multiple functions simultaneously: it acts as both a power supply line and a communication signal transmission line. This multi-functionality allows the system to control multiple slaves from one ECU using a single cable, reducing the need for additional communication ports and simplifying the overall wiring structure
Solution Approach 2:
The patent combines power supply and communication functions into a single communication line. Multiple slaves are cascade-connected through this shared line, eliminating the need for separate power wires and multiple communication ports in the ECU, thus reducing wiring complexity while maintaining communication versatility
3Reliability
If inductors are used to cut DC components for power supply, then power and communication signals are isolated, but magnetic saturation phenomenon causes signal waveform distortion
Solution Approach 1:
The patent introduces a feedback mechanism where the receiver detects signal waveforms and feeds this information back to a correction circuit. The correction circuit then adjusts the signal to compensate for distortion caused by magnetic saturation in the inductor, maintaining signal integrity while preserving the isolation benefits
Solution Approach 2:
The patent converts the harmful effect of magnetic saturation-induced distortion into a correctable parameter. By detecting the distorted waveform and applying correction, the system transforms the inherent limitation of using inductors for isolation into a manageable condition, maintaining both power isolation and signal quality
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 configuration simplifies wiring connections, enables efficient power line communication, and reduces the risk of communication errors by dynamically correcting signal distortions caused by magnetic saturation, thereby enhancing communication reliability and reducing costs.
Implementation Method 1
The Power over APIX cuts DC components in the power wire by an AC coupling to receive a communication signal, and cuts the communication signal with an inductor to obtain power
Implementation Method 2
The Power over APIX cuts DC components in the power wire by an AC coupling to receive a communication signal
Implementation Method 3
The signal distortion correction circuit detects an amount of distortion of a signal waveform generated by a magnetic saturation phenomenon in the communication line
Data Source
AI summary
A communication system includes multiple communication nodes and a communication line. The multiple communication nodes include a master and multiple slaves. The communication line cascade-connects the communication nodes and supplies electricity. The communication line corresponds to a feeder line. Each of the communication nodes is connected with the communication line through an inductor to be supplied with electricity. The each of the communication nodes is AC coupled to the communication line to transmit and receive a communication signal. The master and the slaves perform a bidirectional communication. A communication slave is provided. The communication slave is connected with a communication line through an inductor to be supplied with electricity. A communication master is provided.