CAN-Bus Car Connection Cable With Protocol Switching and Power Cutoff
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Solution Overview
Problem
Traditional automobile connection cables for automatic driving systems are complex and power-consuming, particularly for older VAG vehicle models, making it difficult to support various Volkswagen Corporation vehicle models and connect to driver-assistance systems efficiently.
Innovation Solution
A simplified automobile connection cable design featuring a cable assembly with a signal switching unit and power management unit, allowing for protocol adaptation and controlled power supply, using twisted pairs for CAN-bus communication and a circuit control board to manage power consumption by cutting off constant power when the vehicle is shut off.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional cable connections are used for driver-assistance systems, then multiple separate cables are needed to connect different components (lens, OBD), but this increases device complexity and makes installation more difficult
Solution Approach 1:
The patent combines multiple separate cable functions into a single integrated connection cable that includes both the lens connection interface and OBD connection interface. This merging of previously separate cables into one unified cable reduces installation complexity and improves ease of operation while maintaining all necessary connectivity functions.
2Reliability
If externally connected components are continuously powered for driver-assistance system operation, then the system remains ready for use, but battery consumption increases when the vehicle is shut off
Solution Approach 1:
The patent implements dynamic power management where the power supply state changes based on vehicle operation status. When the vehicle is running, external components receive constant power for full functionality. When the vehicle is shut off, the power supply is automatically cut off to save battery energy. This dynamic switching resolves the contradiction between maintaining system readiness and reducing energy consumption.
3Adaptability or versatility
If a single connection cable is designed to support various VAG vehicle models, then adaptability improves, but the cable must handle multiple protocols and configurations increasing design complexity
Solution Approach 1:
The patent designs a universal connection cable with integrated protocol switching capability that can adapt to multiple VAG vehicle models and communication protocols. The cable includes switching circuitry that automatically or manually selects the appropriate protocol based on the connected vehicle type, enabling one cable design to serve multiple vehicle platforms without requiring model-specific variants.
Data Source
AI summary
An automobile connection cable is configured with a controller area network (CAN-bus) circuit design and provided with a protocol interface between the J533 connector and USB Type-C. The function of switching between different protocols is achieved through the configuration of the cable assembly, so that the driver-assistance system ensures a better adaptability to the VAG vehicle models of Volkswagen Corporation (VAG). When the vehicle is shut off, the circuit control board can also control the constant power supply system between the external device and the vehicle, thereby reducing power consumption.