Playback Data Synchronization Across Multiple Control Networks
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Solution Overview
Problem
Existing playback simulation test systems face challenges in ensuring the reception order of signal data from multiple networks, leading to inefficiencies and inaccuracies in simulating an on-site para-run collation environment, particularly due to synchronization issues and deviations in data collection times across different networks.
Innovation Solution
A playback simulation test system is configured with a data collection device that includes multiple reception units and a data synchronization processing unit to associate collection numbers with signal data, ensuring the reception order is maintained, and a data reproduction device that outputs synchronized signal data to a test network, replicating the on-site para-run collation environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If signal data is collected from multiple existing control system networks using separate data collection devices, then each network can be monitored independently, but synchronization between networks becomes difficult and the reception order cannot be ensured
Solution Approach 1:
The patent merges multiple data collection devices into a single integrated data collection device that can simultaneously collect signal data from multiple control system networks. This unified device uses a single time base for all collection operations, eliminating the time synchronization problems that arise when using separate devices for each network.
Solution Approach 2:
The patent introduces a time tag as an intermediary element that records the precise collection time for each signal data packet. This time tag serves as a mediator that allows the system to track and maintain the reception order of signals from different networks, even when they are collected at slightly different times.
2Adaptability or versatility
If separate data collection devices are used for each network, then network independence is maintained, but the reception order between signals from different networks cannot be ensured
Solution Approach 1:
The patent introduces a time tag as an intermediary element that records the precise collection time for each signal data packet. This time tag serves as a mediator that allows the system to track and maintain the reception order of signals from different networks, even when they are collected at slightly different times.
Solution Approach 2:
The patent performs preliminary tagging of each signal data packet with its collection time immediately upon receipt. This preliminary action ensures that the temporal information is preserved before any processing or storage occurs, preventing loss of reception order information.
3Ease of operation
If different time bases are used in each network, then each network operates autonomously, but synchronization between networks becomes difficult
Solution Approach 1:
The patent extracts the time base function from individual network operations and consolidates it into a single centralized time base within the unified data collection device. This extraction allows each network to maintain its autonomous operation while ensuring that all time measurements across networks are referenced to the same standard.
Data Source
AI summary
This system includes a data collection device, a data accumulation device, and a data reproduction device. The data collection device includes: a first reception unit that receives first signal data transmitted to a first existing network; a second reception unit that receives second signal data transmitted to a second existing network; a count-up unit that counts up a unique collection number at a fixed time interval; and a data synchronization processing unit that associates, when the first reception unit receives the first signal data, the collection number at the time of the reception with the first signal data and associates, when the second reception unit receives the second signal data, the collection number at the time of the reception with the second signal data, and performs accumulation in the data accumulation device.