Fall Detection Safety System for Personal Protective Equipment

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Solution Overview

Problem

Existing personal protective equipment (PPE) for working at great heights faces challenges in efficiently managing fall events and unconsciousness, particularly in ensuring timely rescue and maintaining equipment reliability.

Innovation Solution

A safety system integrated with PPE, featuring wireless communication, sensors (acceleration and orientation), and evaluation/ notification means, which determines fall or unconsciousness events and alerts a rescue coordination center, while also supporting equipment inspection and reliability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If personal protective equipment with shock-absorbing elements is used to intercept falls, then the person is protected from major injuries, but the forces occurring in a fall event reach levels many times the weight force and put the body, equipment and anchor point under enormous strain

Engineering Contradiction:
Improveprotection effectivenessVSAvoidforce during fall event
Core Design Contradiction:
ReliabilityVSForce

Solution Approach 1:

The patent applies beforehand cushioning by implementing a safety system that continuously monitors fall risks and prepares rescue measures before actual fall events occur. Sensors detect potential fall conditions and trigger preventive actions, cushioning the impact of future fall events by having rescue systems pre-positioned and activated.

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

Solution Approach 2:

The patent implements feedback mechanisms through continuous monitoring of fall events using sensors that detect acceleration changes, orientation shifts, and impact forces. This feedback loop provides real-time information about fall conditions to rescue coordination systems, enabling dynamic adjustment of rescue measures based on actual fall parameters.

Inventive Principle:
Principle #23Feedback

2Loss of time

If the falling person is monitored for fall events and loss of consciousness, then timely rescue can be initiated, but the person may be unable to free himself due to position or injuries and needs help from third persons

Engineering Contradiction:
Improverescue response timeVSAvoidself-rescue capability
Core Design Contradiction:
Loss of timeVSEase of operation

Solution Approach 1:

The patent applies self-service by implementing autonomous monitoring systems that automatically detect fall events and loss of consciousness without requiring manual input from the fallen person. The system autonomously triggers rescue alerts and coordinates rescue measures, enabling the safety system to serve itself in detecting and responding to emergencies.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent introduces an intermediary rescue coordination system that acts as a mediator between the fallen person and third-person rescuers. This intermediary system receives data from sensors, processes fall event information, and coordinates rescue resources, bridging the gap between the incapacitated person and external help.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Reliability

If the personal protective equipment is subject to regular inspections, then equipment reliability is maintained, but the inspection process requires time and resources

Engineering Contradiction:
Improveequipment reliabilityVSAvoidinspection time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent replaces manual mechanical inspection processes with electronic sensor-based monitoring systems. Acceleration sensors, orientation sensors, and other electronic devices continuously monitor equipment status, substituting traditional manual inspection methods with automated electronic detection that provides real-time equipment health data without requiring periodic manual intervention.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent implements continuous monitoring of equipment status through sensor systems that operate without interruption, replacing discontinuous periodic inspections with continuous surveillance. This ensures equipment reliability is maintained at all times while eliminating the downtime associated with scheduled manual inspections.

Inventive Principle:
Principle #20Continuity of useful 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 safety system enhances rescue measures by providing immediate alerts and critical information to rescue teams, improves PPE reliability through real-time monitoring, and ensures timely inspections to prevent equipment failures.

Implementation Method 1

sensor means for providing sensor data comprising at least one acceleration sensor and at least one orientation sensor

Methodology Applied
Scientific EffectAcceleration sensing: Accelerometer

Implementation Method 2

sensor means for providing sensor data comprising at least one acceleration sensor and at least one orientation sensor

Methodology Applied
Scientific EffectOrientation sensing: Gyroscope

Data Source

PatentEP3953918B1Fall detector
Publication Date: 2025.03.05 SUN CHEMICAL BV
  • EP3953918B1 patent drawingFigure 1
  • EP3953918B1 patent drawingFigure 2

AI summary

Safety system (100) for use with a personal protective equipment for working in great heights comprising: wireless communication means configured to provide a communication with a rescue coordination center (170); sensor means for providing sensor data comprising at least one acceleration sensor and at least one orientation sensor; evaluation and notification means configured to determine a fall event and/or a loss of consciousness event based on the sensor data and to notify the rescue coordination center (170) via the wireless communication means by sending an alert event message.