Compensator Module for V2X Cable Loss Compensation
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Solution Overview
Problem
Existing data transfer systems in motor vehicles face challenges in efficiently compensating for cable losses in antenna cables, particularly in V2X communication, where signal attenuation affects the reliability and strength of radio-frequency signals.
Innovation Solution
A compensator module with a radio-frequency module and a processing unit that switches between transmit and receive modes based on control data, using a digital data network for control data transfer, and integrating with existing vehicle control units to simplify design and installation, while using amplifiers to compensate for cable losses and adjust signal levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If control data is transferred together with wanted signals in the same channel, then the system structure becomes simpler, but signal interference and reliability deteriorate
Solution Approach 1:
The system separates control data and wanted signals into different transmission channels: control data is transmitted via the data network (CAN, MOST, Ethernet) while wanted signals are transmitted via the antenna cable. This segmentation eliminates mutual interference between control and signal paths while maintaining system functionality.
2Length of moving object
If cable length is increased to extend communication range, then coverage area improves, but signal attenuation increases
Solution Approach 1:
The compensator module performs preliminary amplification of wanted signals before they are transmitted through the antenna cable. By boosting the signal strength in advance, the system can tolerate longer cable lengths without excessive attenuation, thus extending communication range while maintaining signal quality.
Solution Approach 2:
The system uses feedback mechanisms where the control module receives status information about signal conditions and adjusts transmission parameters accordingly. This allows dynamic compensation for cable losses based on actual signal quality, enabling reliable operation over extended cable lengths.
3Reliability
If signal amplification is increased to compensate for cable losses, then signal strength improves, but energy consumption increases
Solution Approach 1:
The amplification level in the compensator module is dynamically adjusted based on actual signal conditions and cable characteristics. Rather than using fixed high amplification, the system adapts the gain level to match the required compensation, minimizing energy consumption while maintaining adequate signal strength.
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
The solution effectively compensates for cable losses, ensuring reliable signal transmission and reception in motor vehicles, enhancing the performance of V2X communication by separating wanted signals and control data and utilizing existing vehicle components for economic and efficient operation.
Implementation Method 1
The radio-frequency module comprises a transmit path containing a power amplifier
Implementation Method 2
a receive path containing a low-noise amplifier. The transmit path is used in the compensator-module transmit operating mode, and the receive path is used in the compensator-module receive operating mode
Data Source
Figure 1
Figure 2~3
AI summary
A compensator module comprises a wanted-signal connection for transferring wanted signals, a radio-frequency module for amplifying the wanted signals, a control-data connection for receiving control data, and a processing unit for processing the control data and for driving the radio-frequency module. The control-data connection is designed to be connected to a digital data network. The processing unit is designed to switch the radio-frequency module between a compensator-module transmit operating mode and a compensator-module receive operating mode according to the received control data.