Terminal-Block Dongle for Automated I/O Loop Checking

Solution Overview

Problem

Manual loop checking of I/O loops in industrial process control systems is time-consuming, costly, and labor-intensive, requiring multiple people to validate and verify the accuracy of cables connecting control panels to field instruments.

Innovation Solution

An automated system and method using a dongle installed on terminal blocks to connect with I/O loops, communicating with operating software and a database to generate and execute I/O loop check files, thereby testing the loops electronically.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If manual loop checking is performed by multiple people testing cables from control panel to field instruments, then the accuracy of I/O connection validation is ensured, but the time consumption and labor requirements increase significantly

Engineering Contradiction:

Improveaccuracy of I/O connection validationVSAvoidtime consumption for loop checking

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent replaces the manual mechanical testing process with an automated electronic system. A testing device with microprocessor automatically performs loop checking by sending test signals through the I/O loop and analyzing the responses, eliminating the need for manual testing by multiple people while maintaining validation accuracy.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The testing device enables self-verification of I/O connections through automated testing. The system independently validates the loop integrity by comparing measured parameters against expected values stored in memory, allowing the system to verify its own configuration without requiring continuous human intervention.

Inventive Principle:

Principle #25Self-service

2Reliability

If manual loop checking is performed by multiple people testing cables from control panel to field instruments, then the accuracy of I/O connection validation is ensured, but the labor requirements increase significantly

Engineering Contradiction:

Improveaccuracy of I/O connection validationVSAvoidlabor efficiency in loop checking

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent replaces the manual mechanical testing process with an automated electronic system. A testing device with microprocessor automatically performs loop checking by sending test signals through the I/O loop and analyzing the responses, eliminating the need for manual testing by multiple people while maintaining validation accuracy.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The testing device acts as an intermediary between the control system and field instruments, automatically performing the validation function that previously required multiple human operators. The device interfaces with the I/O loop and provides automated verification, reducing labor requirements while maintaining testing thoroughness.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Measurement precision

If automated testing device sends test signal through I/O loop to field instrument and measures response, then the loop checking accuracy is improved, but the device complexity increases

Engineering Contradiction:

Improveloop checking accuracyVSAvoidcomplexity of automated testing device

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The testing device is designed as a universal multi-functional unit that can test various types of I/O loops (analog, digital, communication protocols) using a single integrated system. The microprocessor-based device handles multiple testing functions including signal generation, response measurement, data analysis, and result storage, reducing the need for multiple specialized testing devices.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The device uses stored reference data and test patterns in memory to compare against actual loop responses. By copying expected parameter values and test sequences into the device's memory, the system achieves high measurement precision without requiring complex real-time calculations, simplifying the overall device architecture.

Inventive Principle:

Principle #26Copying

Data Source

PatentUS12346229B2System and method for automated loop checking

Publication Date: 2025.07.01 HONEYWELL INTERNATIONAL INC

AI summary

A system and method for the automated checking of I/O loops of a process automation system is disclosed that includes a dongle configured to be installed on a terminal block and make an electrical connection to at least one I/O loop. Operating software communicates with the dongle and to a database of I/O loop data. The operating software constructs an I/O loop check file using the database of I/O loop data and downloads the I/O loop check file to the dongle, where the dongle uses the I/O loop check file to test the I/O loop.