Power Line Communication Protocol Adapter for Tractor-Trailer Integration
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Solution Overview
Problem
Tractor-trailers face limitations with existing power line communication systems due to the scarcity and high cost of proprietary transceivers, such as the SSC P485 PL Transceiver IC, which also restricts the use of diverse communication protocols, hindering integration of various devices and systems.
Innovation Solution
A system and method that includes an input signal conditioning circuit with an amplifier and conditioning stage to convert analog signals to digital, and a controller to identify and decode communication protocols, enabling message transmission and reception along the power line without relying on the proprietary transceiver, and allowing communication using multiple protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If proprietary transceivers (e.g., SSC P485 PL Transceiver IC) are used for power line communication, then communication reliability is improved, but device cost increases and device availability worsens
Solution Approach 1:
The patent replaces expensive proprietary transceivers with inexpensive, commercially available microcontrollers (e.g., ATmega128, PIC18F2520) that can be obtained from standard distributors. These microcontrollers implement power line communication protocols through software rather than requiring specialized hardware, dramatically reducing device cost and improving availability while maintaining communication reliability
Solution Approach 2:
The patent substitutes dedicated hardware transceiver circuits with software-based protocol implementation on general-purpose microcontrollers. This replacement of specialized mechanical/electrical components with programmable logic allows the same communication function to be achieved using off-the-shelf components, reducing both cost and supply chain constraints
2Stability of the object's composition
If proprietary transceivers are used for power line communication, then communication stability is improved, but communication protocol versatility worsens
Solution Approach 1:
The patent implements multiple communication protocols (J1939, CAN, LIN, RS-232, RS-485, I2C, SPI) within a single microcontroller platform. The controller can dynamically select and switch between different protocols based on the communication requirements, providing universal compatibility across multiple protocol standards while maintaining stable and reliable communication for each protocol type
Solution Approach 2:
The patent employs dynamic protocol selection where the microcontroller can adaptively choose which communication protocol to use based on the specific application requirements. This dynamic capability allows the system to switch between protocols as needed, providing versatility while maintaining the stability of each individual protocol through dedicated software implementation
3Reliability
If proprietary transceivers are used for power line communication, then communication performance is improved, but system complexity increases
Solution Approach 1:
The patent combines multiple communication protocol capabilities into a single integrated microcontroller platform. Rather than using separate proprietary transceivers for different protocols, the system merges all protocol implementations into one device, reducing overall system complexity while maintaining the communication performance of each protocol through dedicated software routines
Data Source
AI summary
A system and method for controlling communications between members of a tractor-trailer along a power line extending between the members are provided. The system includes an input signal conditioning circuit including an amplifier and conditioning stage configured to convert an analog input signal from the power line to a digital input signal. The system further includes a controller configured to receive the digital input signal, identify a communication protocol for the analog input signal from among a plurality of communication protocols responsive to the digital input signal and decode the digital input signal using the communication protocol. The controller may also identify a communication protocol for an output signal on the power line from among the plurality of communication protocols and encode a digital communication using the communication protocol.