Work Site Emissions Detection Using Dynamic Concentration Thresholds

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Solution Overview

Problem

Existing emission detection systems often fail to respond promptly to sudden changes in gas concentrations, leading to frequent false alarms and equipment shutdowns, which reduces their effectiveness in preventing damage to equipment and ensuring safety.

Innovation Solution

A system that uses sensors to detect emission concentrations and a control unit to generate concentration level contours, allowing for precise identification of risk areas and automatic or operator-initiated shutdowns of equipment to prevent damage and ensure safety.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If predefined set points are used to trigger responses, then the detection system can operate with simple thresholds, but frequent false alarms or shutdowns occur reducing effectiveness

Engineering Contradiction:
Improvedetection system operationVSAvoideffectiveness of detection system
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The system dynamically adjusts the response threshold based on the rate of change of emission concentrations. Instead of using a fixed predefined set point, the threshold varies dynamically according to how quickly concentrations are changing, allowing the system to adapt to different operational conditions and reduce false alarms while maintaining reliability.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The invention changes the parameter used for triggering responses from a static concentration threshold to a dynamic threshold that incorporates the rate of change of concentration. This parameter transformation allows the system to distinguish between normal fluctuations and genuine hazardous conditions, resolving the contradiction between simple operation and reliable effectiveness.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If traditional detection systems wait for critical concentration levels, then they can avoid false alarms from minor fluctuations, but emissions reach critical levels before the system can respond

Engineering Contradiction:
Improveavoidance of false alarmsVSAvoidresponse time to emissions
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The system performs preliminary action by detecting the rate of change of emission concentrations and predicting future concentration levels. When the rate of change indicates that critical levels are approaching, the system triggers responses in advance, before emissions actually reach critical concentrations. This preliminary detection and prediction mechanism resolves the contradiction between avoiding false alarms and responding quickly enough to prevent damage.

Inventive Principle:
Principle #10Preliminary action

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

The system effectively prevents equipment damage and ensures safety by accurately detecting hazardous emissions and initiating controlled shutdowns before critical levels are reached, reducing false alarms and improving response times.

Implementation Method 1

A source of an emission may be identified by one or more sensors that detect one or more concentration levels of one or more emissions

Methodology Applied
Scientific EffectGas detection:

Data Source

PatentUS10948472B2Discrete emissions detection for a site
Publication Date: 2021.03.16 HALLIBURTON ENERGY SERVICES INC
  • US10948472B2 patent drawing
  • US10948472B2 patent drawing
  • US10948472B2 patent drawing

AI summary

Undetected emissions may damage devices at a work site and pose a safety hazard to the surrounding environment. A method of control based on predictive emissions detection is disclosed. The method uses sensors coupled to work site equipment to identify devices and regions of a work site that may be affected by adverse conditions. Detection of such emissions may allow the system or operator to shut down or otherwise act on equipment before any harm is done to the device or personnel in the area.