Time Confirmation Signal for PID Process Synchronization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing fault detection and fault prediction systems in Equipment Engineering Systems face challenges in achieving precise time synchronization between multiple time series data from various sensors, particularly in systems with large data processing configurations, making it difficult to confirm data acquisition times.
Innovation Solution
A control system that includes a data collecting device and an assistance device, which transmits a time confirmation signal to controlling devices in a predetermined cycle, forcing the output of time confirmation data as a manipulation variable, allowing for precise synchronization of time series data by altering the manipulation variable's limits temporarily.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If time synchronization processing is implemented in systems with large data processing configurations, then time synchronization accuracy is improved, but system complexity and processing difficulty increase
Solution Approach 1:
The patent introduces a dedicated time confirmation signal as an intermediary element that mediates between multiple controlling devices. This signal serves as a common reference point that all devices can use to synchronize their time stamps without requiring complex inter-device communication or synchronization protocols, thereby improving time synchronization accuracy while keeping system complexity manageable.
Solution Approach 2:
The time confirmation signal is transmitted periodically at predetermined time intervals to all controlling devices. This periodic transmission provides regular synchronization opportunities, ensuring that time stamps remain accurate across all devices without requiring continuous complex synchronization processing, thus balancing precision with system simplicity.
2Measurement precision
If time confirmation signals are transmitted to all controlling devices, then time synchronization confirmation is improved, but communication overhead and data transmission increase
Solution Approach 1:
The patent extracts the time synchronization function from the main control data transmission stream by using a separate, dedicated time confirmation signal. This extracted signal contains only time reference information, allowing for efficient transmission with minimal overhead while providing accurate time synchronization confirmation across all controlling devices.
3Productivity
If representative values are used for fault detection, then data transmission and storage requirements are reduced, but fault detection precision deteriorates
Solution Approach 1:
The patent applies preliminary actions by adding time confirmation data to control data before fault detection analysis. This preliminary time stamping enables precise temporal correlation of events across multiple devices, ensuring that fault detection can accurately determine causality and timing relationships even when using aggregated representative values, thus maintaining detection precision while preserving processing efficiency.
Data Source
AI summary
A time synchronization signal for time series data collected from multiple controlling devices of a PID process is provided. An assistance device concurrently transmits a time confirmation signal to respective controlling devices in a predetermined time confirmation cycle, and the controlling devices forcibly output time confirmation data for synchronizing control data related to the respective controlling devices with each other as a manipulation variable in one control cycle immediately after receiving the time confirmation signal. The time confirmation data is an irregular value that is not outputted as a value of the manipulation variable in a control cycle during a steady control state.