Vehicle Network Simulation Device Using Virtual Channel Modeling
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Solution Overview
Problem
Current methods for simulating data transmission in motor vehicle networks, such as those represented by CISPR and ISO standards, are often unrealistic and unsuitable for evaluating transmission quality due to their inability to accurately model transient response characteristics and interference environments, leading to suboptimal network suitability assessments.
Innovation Solution
A simulation device that receives modulated input signals and descriptions of simulated interference environments and channel characteristics, using programmable logic modules like FPGAs and DSPs to compute output signals, allowing for realistic simulation of data transmission quality without requiring a physical network setup, by modeling channel characteristics and interference environments using statistical and precise pulse representations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If special simulation of vehicle electrical system (CISPR 25) is used to simulate transient response characteristic, then the simulation can be performed without physical network, but the simulation results are unrealistic and unsuitable for evaluating transmission quality
Solution Approach 1:
The patent creates a virtual copy of the data transmission network using a network simulator that replicates network topology, channel characteristics, and interference environments. This virtual model allows realistic simulation of data transmission without requiring physical network deployment, resolving the contradiction between simulation ease and evaluation accuracy
Solution Approach 2:
The patent replaces physical network hardware with software-based simulation models that compute transmission characteristics algorithmically. The network simulator substitutes actual network infrastructure with mathematical models of channel characteristics and interference patterns, enabling accurate transmission quality evaluation without physical deployment
2Reliability
If ISO pulses are applied to test RC circuit of network components, then the testing can be performed on physical components, but this method is not suitable for simulating data transmission via data transmission network
Solution Approach 1:
The network simulator provides multi-functionality by既能 simulating data transmission characteristics又能 evaluating component suitability. It can model various network topologies, channel characteristics, and interference environments while also assessing whether network components are suitable for data transmission, combining component testing and transmission simulation in one system
Solution Approach 2:
The patent changes the simulation parameters from simple RC circuit characteristics to comprehensive data transmission parameters including network topology, channel characteristics, interference patterns, and transmission quality metrics. This allows the system to evaluate both component reliability and data transmission performance
3Measurement precision
If new participant is added to network and actual testing environment is set up, then transmission quality can be evaluated in realistic conditions, but it requires physical network implementation and testing environment setup
Solution Approach 1:
The network simulator creates a virtual copy of the network environment that includes the new participant. It replicates network topology, channel characteristics, and interference patterns without requiring physical deployment, enabling transmission quality evaluation while avoiding the complexity of actual testing environment setup
Solution Approach 2:
The patent performs preliminary simulation of data transmission involving new participants before actual network deployment. The network simulator allows evaluation of transmission quality and optimization of transmission parameters in advance, reducing the need for complex physical testing environments later
Data Source
AI summary
A device for simulating a data transmission via a data transmission network, especially in a motor vehicle, for evaluating the transmission quality via the network as a function of an interference environment and of a channel characteristic of the network. To be able to draw a conclusion regarding transmission quality that is as reliable and as close to reality as possible, the device receives at least one modulated input signal to be transmitted via the network, that it receives a description of a simulated interference environment, that it receives a description of a simulated channel characteristics of the network, and that it features a logic module which is programmed in such a way that an output signal is computed according to a specifiable algorithm as a function of the received signal and taking into consideration the description of the interference environment and the description of the channel characteristic, the output signal allowing for a conclusion regarding the quality of transmission via the network.