Obscuration Cloud Generator Door Checking System

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Solution Overview

Problem

Obscuration cloud generation devices can be sabotaged by blocking the release of the obscuration cloud, leading to failure and potential safety hazards due to high pressures and heat generated by exothermic reactions.

Innovation Solution

An obscuration cloud generation device with a door checking system and controller that applies a force to open the door to a predefined minimum extent, ensuring the cloud can be released safely and effectively, and triggers an alert if the door is blocked.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the door is designed to be pushed out by high pressure gas release, then the obscuration cloud can be effectively released, but the device becomes vulnerable to sabotage by blocking the door

Engineering Contradiction:
Improveanti-sabotage capabilityVSAvoiddoor checking system
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The door checking system performs a preliminary action by attempting to open the door before the obscuration cloud is released. This preliminary check verifies that the door is not blocked by sabotage, allowing the system to detect and alert potential tampering before it can interfere with the actual cloud release operation

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The door checking system provides feedback to the controller about the door's accessibility. The controller receives this feedback and can then determine whether to proceed with activating the obscuration cloud or to generate an alert indicating potential sabotage, creating a closed-loop safety mechanism

Inventive Principle:
Principle #23Feedback

2Object-affected harmful factors

If the door is blocked by sabotage, then the obscuration cloud release is prevented, but high pressure and heat build up causing safety hazards

Engineering Contradiction:
Improvepressure and heat buildupVSAvoidsafe operation
Core Design Contradiction:
Object-affected harmful factorsVSReliability

Solution Approach 1:

The door checking system applies a preliminary anti-action by testing whether the door can be opened before allowing the high-pressure gas release to occur. This prevents the dangerous buildup of pressure and heat that would result from blocking the release path, as the system detects the blockage and prevents activation altogether

Inventive Principle:
Principle #9Preliminary anti-action

Solution Approach 2:

The system provides beforehand cushioning by detecting potential sabotage conditions before they can lead to dangerous pressure buildup. The controller uses the door checking feedback to prevent activation when blocking is detected, cushioning against the potential harmful effects of pressure and heat accumulation

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

3Reliability

If a door checking system is added to verify door openness, then safety is improved, but the device complexity increases

Engineering Contradiction:
Improvesafe operationVSAvoidchecking system components
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The door checking system is designed to be self-service in that it autonomously performs the check and provides feedback without requiring external intervention. The pushing member automatically tests door accessibility and the controller automatically processes the feedback, minimizing the need for additional complex control mechanisms

Inventive Principle:
Principle #25Self-service

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

Ensures the safe and effective operation of the obscuration cloud generation device by verifying the door's openness before activating the cloud release, preventing sabotage-induced failures and safety hazards.

Implementation Method 1

a door checking system and a controller adapted to control the operation of the device. The controller instructs the door checking system to apply a force for opening the door

Methodology Applied
Scientific EffectMechanical Force: Mechanical Force

Implementation Method 2

The obscuration cloud generating canister contains cloud-forming material which, upon activation of the canister, undergoes an exothermic reaction to produce particles to create the cloud

Methodology Applied
Scientific EffectPressure Gradient: Pressure Gradient

Implementation Method 3

which, upon activation of the canister, undergoes an exothermic reaction to produce particles to create the cloud, but by sabotage/tampering the covering part may be held in place

Methodology Applied
Scientific EffectExothermic Reaction: Exothermic Reaction

Data Source

PatentEP3899891B1Obscuration cloud generator
Publication Date: 2022.12.21 ESSENCE SECURITY INTERNATIONAL LTD (ESI)
  • EP3899891B1 patent drawingFigure 1
  • EP3899891B1 patent drawingFigure 2A~3
  • EP3899891B1 patent drawingFigure 4A~4B

AI summary

An obscuration cloud generation device (100) comprises a housing (101) having a door (102) and a frame (103) sized and shaped to accommodate an obscuration cloud generating canister (110) when the door (102) is in a closed state. Activation of the canister (110) emits a composition for forming the cloud. The door (102) has an operably open state in which the door (102) is open at least a predefined minimum extent for exiting of the emitted composition. A door checking system (104) applies a force for opening the door (102) and generates an indication of whether the door (102) is open at least to the minimum extent. A controller (105) is adapted to instruct the checking system (104) to apply the force and to receive the indication to determine, before activating the canister (110), that the door (102) is not blocked from reaching the operably open state.