Gateway Security Circuit Isolating Vehicle Domains
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Solution Overview
Problem
As vehicles transition to autonomous driving, the increasing data transmission between internal and external vehicle domains via Ethernet networks poses a risk of unauthorized access, potentially leading to loss of vehicle control and safety hazards due to inadequate network security protection.
Innovation Solution
A gateway security circuit with an intranet and external domain controller, along with a communication module that encrypts and decrypts data, and a heat dissipation module to maintain circuit stability, isolates data transmission between domains, reducing the risk of intrusion and ensuring secure communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If data transmission between internal and external vehicle domains is enabled via Ethernet network, then communication ability and interconnection ability are enhanced, but network security protection is insufficient leading to risk of unauthorized access
Solution Approach 1:
A gateway device is introduced as an intermediary between the internal vehicle domain and external network. The gateway includes a communication module that encrypts data before transmission and a heat dissipation module that maintains operational stability. This intermediary structure enables enhanced communication capability while providing security protection through encryption and reliable operation management.
2Reliability
If encryption and decryption operations are performed by communication module, then data transmission security is improved, but heat generation increases affecting circuit stability
Solution Approach 1:
A heat dissipation module is introduced as an intermediary thermal management system between the encryption/decryption operations and the gateway circuit. This module includes a heat dissipation chamber positioned adjacent to the communication module, providing a dedicated thermal management path that allows secure encryption operations while maintaining circuit stability through active heat dissipation.
3Stability of the object's composition
If gateway device with heat dissipation module is deployed, then circuit stability is maintained, but device complexity increases
Solution Approach 1:
The heat dissipation module is merged with the existing gateway device structure. The heat dissipation chamber is integrated into the gateway housing, and the communication module is positioned to utilize this integrated thermal management structure. This merging approach maintains circuit stability while minimizing the increase in device complexity through unified design.
Data Source
AI summary
A gateway security circuit for isolating an internal vehicle domain and an external vehicle domain comprises a first communication interface, a second communication interface, and a communication module. The communication module comprises an intranet domain controller electrically connected with the first communication interface and an external domain controller electrically connected with the second communication interface. The intranet domain controller is configured to communicate with the in-vehicle communication system of a vehicle, and the external domain controller is configured to communicate with the out-of-vehicle communication system of the vehicle. intranet domain controller and the external domain controller respectively control the data transmission with the in-vehicle communication system and the out-vehicle communication system, realizing the isolation of the intranet domain controller and the external domain controller, avoiding the cross transmission of data, reducing the risk of vehicle intrusion. A gateway security device and the vehicle are also provided.