Merging Unit Synchronization for Variable Transformer Sampling

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Solution Overview

Problem

Existing systems face difficulties in variably setting sampling frequencies according to the types of various voltage/current transformers, leading to instability and collisions in sampling outputs.

Innovation Solution

A system comprising a secondary converter and a merging unit that facilitates the transmission of sampling frequency setting information, a 1PPS signal, and synchronization signals, along with A/D converters and a buffer to manage and synchronize different sampling frequencies without collisions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a fixed sampling frequency is used for all voltage/current transformers, then the system structure is simple, but it cannot adapt to different transformer types and causes sampling collisions

Engineering Contradiction:

Improveadaptability to different transformer typesVSAvoidsystem structure complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The sampling frequency is made dynamic and adjustable rather than fixed. The merging unit can vary the sampling frequency according to the specific transformer type being measured, allowing the system to adapt to different requirements while maintaining a relatively simple overall structure.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes the sampling frequency parameter based on transformer type. Different voltage/current transformers require different sampling frequencies, so the merging unit adjusts this parameter to match the specific transformer characteristics, resolving the adaptability issue.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If multiple sensors with different sampling frequencies are collected simultaneously, then various transformer types can be measured, but data collisions occur during collection

Engineering Contradiction:

Improveability to measure various transformer typesVSAvoiddata collection stability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The merging unit performs preliminary actions by collecting data from all sensors before processing. It gathers sampling frequency information and synchronization signals in advance, then uses this information to properly timestamp and sort data, preventing collisions during the collection process.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system uses feedback mechanisms where the merging unit receives synchronization signals from sensors and uses this feedback to adjust the timing and ordering of data collection. This ensures that data from different sampling frequencies are properly coordinated without collisions.

Inventive Principle:

Principle #23Feedback

3Adaptability or versatility

If sampling frequency is not synchronized with reference time, then flexible sampling is possible, but timing accuracy and synchronization between multiple sensors deteriorates

Engineering Contradiction:

Improveflexibility in samplingVSAvoidtiming accuracy

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The merging unit acts as an intermediary between the sensors and the final data output. It receives synchronization signals from sensors, uses these as reference time, and then coordinates the sampling process to maintain timing accuracy while allowing flexible sampling frequencies for different transformer types.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS12613261B2System with a merging unit for variably controlling and synchronizing sampling frequency of a secondary converter

Publication Date: 2026.04.28 HYOSUNG HEAVY IND CORP

AI summary

A system with a merging unit for variably controlling and synchronizing a sampling frequency of a secondary converter is provided. The system facilitates the setting of sampling frequencies according to the types of various voltage/current transformers and stably collects sampling outputs of different sampling frequencies of various voltage/current transformers without collisions. The system for variably controlling the sampling frequency includes: a secondary converter, which collects analog data from a first sensor and converts the analog data into digital data; and a merging unit which collects analog data from a second sensor and converts the analog data into digital data while collecting the output of the secondary converter.