Automated Loop Check via Smart Junction Box Voltage Detection

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Solution Overview

Problem

Manual loop checking of cables in industrial process control systems is time-consuming and labor-intensive, requiring multiple people to verify connections from control panels to field instruments, which increases costs and reduces efficiency.

Innovation Solution

An automated loop checking system using smart junction boxes that detect voltage and transmit messages, with an interface controlling the marshalling cabinet to source voltage and monitor detection, enabling automated verification of cable connections.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If manual loop checking is performed by multiple people to verify cable connections, then connection accuracy is ensured, but time consumption and labor costs increase significantly

Engineering Contradiction:

Improveconnection verification accuracyVSAvoidloop checking time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The patent replaces the manual mechanical verification process with an automated electrical detection system. The smart junction box automatically sources voltage through cables and detects the voltage at the field device end, eliminating the need for manual connection verification while maintaining accuracy through automated voltage detection and message transmission.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system enables self-verification through automated voltage sourcing and detection. The smart junction box independently performs the loop checking function by sourcing voltage and receiving detection messages, eliminating the need for external manual intervention and significantly reducing time consumption.

Inventive Principle:

Principle #25Self-service

2Reliability

If multiple people work together to perform loop checking, then connection verification is thorough, but manpower requirements and operational complexity increase

Engineering Contradiction:

Improveconnection verification reliabilityVSAvoidoperational simplicity

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent replaces the complex manual coordination process with an automated electrical system. The smart junction box and interface work together to automatically source voltage, detect it at the field device, and transmit confirmation messages, eliminating the need for multiple people to coordinate while maintaining verification reliability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent extracts the verification function from the manual process and embeds it in the smart junction box hardware. The voltage sourcing and detection capabilities are built into the system itself, allowing automated verification without requiring external human operators.

Inventive Principle:

Principle #2Taking out (Extraction)

3Productivity

If automated voltage sourcing and detection is implemented in smart junction boxes, then loop checking speed increases, but device complexity increases

Engineering Contradiction:

Improveloop checking efficiencyVSAvoidsmart junction box complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The smart junction box integrates multiple functions into a single device: voltage sourcing, voltage detection, message transmission, and loop checking coordination. This multi-functionality allows the device to perform automated loop checking while maintaining compatibility with existing field devices and marshalling cabinets, managing complexity through functional integration.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Reduces the time and manpower required for loop checking, enhancing efficiency and reducing troubleshooting time by automating the verification process, ensuring accurate connections between control panels and field devices.

Implementation Method 1

The marshalling cabinet is configured to source a voltage in a plurality of cables through junction boxes to a plurality of field devices. Each of the junction boxes is configured to detect the voltage from the marshalling cabinet

Methodology Applied

Scientific EffectVoltage sourcing and detection: Conduction (electrical)

Data Source

PatentUS9779610B2Automated loop check for smart junction boxes

Publication Date: 2017.10.03 HONEYWELL INTERNATIONAL INC

AI summary

A system includes a marshalling cabinet, a plurality of junction boxes, and an interface. The marshalling cabinet is configured to source a voltage in a plurality of cables through junction boxes to a plurality of field devices. Each of the junction boxes is configured to detect the voltage from the marshalling cabinet and transmit a detection message upon detecting the voltage. The interface is configured to receive the detection messages from the respective junction boxes that detect the voltage.