Redundant Ethernet Secure Computer System Architecture
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Solution Overview
Problem
Existing secure computer systems in the rail and petrochemical industries face challenges with complex hardware, low computing power, and limited communication capacity, which affect their reliability and safety in real-time control applications.
Innovation Solution
A redundant Ethernet-based secure computer system is designed with dual-CPU symmetric redundancy architecture and multi-path Ethernet connections, featuring a simple hardware structure, high computing power, and large communication capacity, enabling efficient data cross comparison and synchronization between systems and external devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional secure computer architecture is used, then system reliability is improved through redundancy, but hardware complexity increases
Solution Approach 1:
The patent replaces traditional complex redundant hardware architectures with an Ethernet-based communication system. Instead of using dedicated redundant hardware paths, the invention uses standard Ethernet communication protocols and software-based redundancy management, significantly simplifying the hardware while maintaining reliability through networked fault tolerance
Solution Approach 2:
The Ethernet communication unit serves multiple functions simultaneously: data transmission, redundancy management, system synchronization, and fault detection. This multi-functional approach eliminates the need for separate dedicated hardware components for each function, reducing overall hardware complexity while maintaining system reliability
2Reliability
If traditional secure computer architecture is used, then safety protection is achieved, but computing power is reduced
Solution Approach 1:
The patent replaces hardware-based safety verification mechanisms with software-based solutions running on high-performance processors. The Ethernet communication unit handles data validation and safety checks through software protocols, allowing the use of powerful modern processors that provide both high computing power and safety protection through firmware and software layers
3Reliability
If traditional secure computer architecture is used, then fault-safe operation is achieved, but communication capacity is limited
Solution Approach 1:
The Ethernet communication unit is designed to handle multiple communication tasks simultaneously through its multi-path Ethernet interfaces. It supports fault-safe operation protocols while providing high-bandwidth data transmission capabilities, effectively combining safety communication with high-capacity data transfer in a single unified communication subsystem
Solution Approach 2:
The patent transitions from single-path to multi-path Ethernet communication, adding dimensional redundancy to the communication architecture. Multiple Ethernet paths provide both fault tolerance and increased communication capacity, allowing the system to maintain safety operation while dramatically expanding data transmission capabilities through parallel communication channels
Data Source
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AI summary
A redundant Ethernet-based secure computer system, wherein the system comprises a first system and a second system, the first system includes a first logic processing unit module and a first communication unit module, and the second system includes a second logic processing unit module and a second communication unit module; the first logic processing unit module and the second logic processing unit module adopt a dual-CPU symmetric redundancy architecture, for achieving an intrasystem dual-CPU data cross comparison function and an intersystem dual-CPU data synchronous comparison function; the first communication unit module and the second communication unit module are used for achieving a data transmission and data analysis function between the first logic processing unit module, the second logic processing unit module and external signal systems.