Trailer Wiring Harness Video Transmission on Shared Control Wires
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional mirror systems in commercial vehicles have blind spots, particularly behind the trailer, making it difficult for operators to be aware of objects in that area without adding costly dedicated wiring for video signal transmission with minimal latency.
Innovation Solution
A trailer communication system using a sensor, such as a camera, to generate a video signal that is transmitted over common wires in the existing wiring harness, along with control signals, allowing for real-time object awareness without the need for dedicated wiring, utilizing processors and filters to embed and decode the signal effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dedicated wiring is installed for video signal transmission, then video transmission quality and reliability are improved, but installation cost and system complexity increase
Solution Approach 1:
The existing wiring harness, originally designed only for control signals and power, is made multi-functional by enabling it to carry both control signals and video data signals simultaneously. The controller multiplexes the common wires to transmit different types of signals, eliminating the need for separate dedicated video wiring while maintaining transmission reliability through signal encoding and decoding processes.
Solution Approach 2:
The patent combines the video signal transmission function with the existing control signal wiring harness. By merging these functions into a single wiring infrastructure, the system reduces overall wiring complexity while ensuring reliable video transmission through the shared medium using signal processing techniques.
2Reliability
If dedicated wiring is installed for video signal transmission, then video transmission quality is improved, but installation cost increases
Solution Approach 1:
The existing wiring harness is made multi-functional to carry both control signals and video data, eliminating the need for separate dedicated video wiring. This reuses existing infrastructure, significantly reducing material costs and installation expenses while maintaining video transmission quality through signal encoding and filtering.
Solution Approach 2:
The system uses the existing wiring harness's own capacity to carry video signals by encoding video data onto the control signal wires. The controller and filter components work together to enable the wiring harness to serve itself for dual purposes, avoiding the need for additional dedicated video wiring infrastructure.
3Device complexity
If common wires are used for both control signals and video signals, then wiring complexity is reduced, but signal interference increases
Solution Approach 1:
The filter component acts as an intermediary between the common wires and the video signal processing circuitry. It separates and cleans the video signal from the control signals sharing the same wiring harness, removing electrical noise and interference while allowing both signal types to coexist on the common wires without degrading each other's quality.
Solution Approach 2:
The system employs signal encoding and filtering with feedback mechanisms to monitor and correct for interference on the common wires. The controller adjusts signal transmission parameters and the filter dynamically removes interference, ensuring clean video signal extraction even when sharing wires with control signals.
Data Source
AI summary
A trailer communication system has a wiring harness configured to carry a plurality of control signals and a connector configured to communicate with a tractor. A sensor is configured to generate a sensor signal. A processor is interconnected between the sensor and the wiring harness, the processor configured to transform the sensor signal for transmission over the wiring harness with at least one of the plurality of control signals using common wires within the wiring harness. The processor is further configured to receive the plurality of control signals and to generate a command to a corresponding one of a plurality of trailer components based upon the plurality of control signals.