Vehicle-Trailer PLC Signal Analysis for ABS Fault Detection
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Solution Overview
Problem
Existing power line communication (PLC) systems for vehicle-trailer communication lack redundancy in detecting trailer antilock braking system (ABS) malfunctions, especially when multiple trailers are connected, and rely heavily on hardware components like P485 chips, which can fail under certain conditions.
Innovation Solution
A system utilizing power line communication to transmit raw signals between a vehicle and trailers, employing signal processing and machine learning models to determine trailer connection and ABS status, complemented by hardware chips for redundancy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hardware components like P485 chips are used for detecting trailer ABS malfunction via PLC, then detection capability is provided, but reliability is reduced due to lack of redundancy and potential hardware failure
Solution Approach 1:
The patent transforms the detection approach from hardware-based to software-based by changing the operational parameters of the system. Machine learning models process PLC signals to detect trailer ABS malfunctions, ABS messages, and trailer connections, replacing reliance on hardware chips like P485 with software intelligence that can handle signal processing and pattern recognition.
Solution Approach 2:
The patent substitutes the mechanical/hardware detection system with a software-based machine learning system. Instead of using hardware chips to detect ABS malfunctions, the system uses trained machine learning models that process electrical signals from the PLC communication to identify malfunction patterns, ABS message presence, and trailer connection status.
2Reliability
If software-based machine learning processing is used to detect trailer ABS malfunction, then redundancy and reliability are improved, but device complexity increases
Solution Approach 1:
The machine learning models serve multiple functions simultaneously: detecting trailer ABS malfunctions, identifying ABS messages from trailers, determining trailer connection status, and processing signals from multiple trailers. This multi-functionality provides redundancy without requiring separate dedicated systems for each detection task.
Solution Approach 2:
The patent segments the detection task into distinct machine learning models trained for specific functions: one model for detecting trailer connections, another for detecting ABS messages, and another for detecting ABS malfunctions. This segmentation allows each model to specialize in its function while working together to provide comprehensive redundancy.
3Adaptability or versatility
If multiple trailers are connected to the vehicle, then transport capability is improved, but signal detection accuracy deteriorates due to increased complexity and potential interference
Solution Approach 1:
The machine learning models are trained on signal patterns from multiple different trailer configurations and scenarios, creating a comprehensive knowledge base of expected signal variations. This training process allows the system to distinguish between legitimate signal variations from multiple trailers and actual malfunction indicators, maintaining detection accuracy regardless of the number of connected trailers.
Data Source
AI summary
A system and method for providing information relative to a connection between a vehicle and at least one trailer. The system comprises a power line communication configured to communicate raw signals on at least one electric power conductor between the or each trailer and the vehicle, the system further comprising a user interface unit and a processing unit, the processing unit being configured to apply signal processing to a raw signal received, to obtain a time domain signal, and transform the time domain signal to a frequency domain signal, use the time domain signal and the frequency domain signal in one or more machine learning models, wherein each machine learning model was previously trained to output an information relative to a connection between the vehicle and the or each trailer, and provide the information to the user interface unit.