Active Protective Garment Fall Detection Airbag Deployment
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Solution Overview
Problem
There is a lack of effective devices to protect individuals, particularly the elderly, from injuries resulting from falls and impacts that can lead to bone fractures, as existing protective gear is cumbersome, unattractive, and ineffective for daily use.
Innovation Solution
An active protective garment (APG) equipped with sensors and a logic controller that detects the onset of a fall, automatically deploying airbags or padding to absorb impact and prevent bone fractures, integrated into clothing items like shorts, jackets, and collars, using accelerometers, gyroscopes, and algorithms to distinguish falls from normal activities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If body armor, helmets, and protective gear are used to protect from impact injuries, then protection effectiveness is improved, but weight and bulk increase making them cumbersome and unattractive for regular wear
Solution Approach 1:
The airbag is pre-positioned within the garment but remains deflated during normal wear. Upon detecting a fall through accelerometer and gyroscope sensors, the airbag automatically inflates in milliseconds to provide protection. This preliminary positioning without continuous inflation resolves the contradiction by providing protection effectiveness only when needed, eliminating the weight and bulk penalty during regular activities.
Solution Approach 2:
The protective garment transitions from a soft, flexible state during normal wear to a rigid, protective state during impact. The airbag remains collapsed during everyday activities, allowing the garment to move dynamically with the body. Upon fall detection, the airbag rapidly inflates to provide structural protection, then deflates afterward. This dynamic transformation resolves the contradiction between protection effectiveness and wearability.
2Reliability
If sensors and automated deployment systems are added to detect falls and deploy protection, then protection timing and effectiveness are improved, but device complexity increases
Solution Approach 1:
The accelerometer and gyroscope sensors serve multiple functions: they detect falls, distinguish falls from normal activities (sitting, lying down, exercise), and trigger the appropriate protective response. This multi-functionality resolves the contradiction by improving protection timing through accurate fall detection while minimizing device complexity through sensor versatility rather than requiring multiple specialized sensors.
Solution Approach 2:
The system automatically detects falls through sensor input and triggers airbag deployment without requiring user intervention. The logic controller continuously monitors sensor data, automatically distinguishes falls from normal activities using pre-programmed algorithms, and activates the airbag inflator when a fall is detected. This self-service automation improves protection timing while keeping the user interface simple, resolving the contradiction between reliability and complexity.
3Reliability
If the airbag inflates rapidly to provide protection during a fall, then impact protection effectiveness is improved, but the force generated may cause discomfort or injury during normal wear
Solution Approach 1:
The airbag is pre-positioned within the garment structure but remains deflated during normal wear. The rapid inflation force is only generated after fall detection, when the protective benefit far outweighs any potential discomfort. This preliminary positioning resolves the contradiction by ensuring the harmful inflation force is only applied when absolutely necessary for protection, not during normal activities.
Solution Approach 2:
The airbag is strategically positioned to protect specific vulnerable areas (hips, spine, head) rather than providing uniform protection throughout the garment. The rapid inflation force is concentrated in these critical zones where impact protection is most needed, while leaving other areas soft and comfortable during normal wear. This localized protection approach resolves the contradiction between impact effectiveness and comfort during regular use.
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 APG effectively deploys protective measures within 0.5 seconds of detecting a fall, providing energy dissipative padding to prevent bone fractures and reducing the risk of serious injuries, while being stylish and comfortable enough for regular wear.
Implementation Method 1
The sensor is capable of detecting changes in acceleration, orientation and/or velocity
Implementation Method 2
The sensor is capable of detecting changes in acceleration, orientation and/or velocity
Implementation Method 3
The airbag inflator is activated by the logic controller, deploying airbags or pockets on or in the garment that are rapidly and automatically expanded to provide energy dissipative or distributive padding
Implementation Method 4
deploying protective measures... automatically deployed via an air bag inflator... rapidly and automatically expanded to provide energy dissipative or distributive padding
Data Source
AI summary
A motion analysis system includes: at least one orientation sensor configured to detect three-dimensional torso motion over time, the at least one orientation sensor including: a multiaxial accelerometer configured to detect acceleration in at least three orthogonal directions, and a gyroscope; and a controller configured to receive data from the at least one orientation sensor, the controller programmed to process the data to: determine at least one of a state and a transition of the torso; identify normal parameters for the determined at least one of the state and transition; and determine whether motion of the torso is outside the normal parameters. The controller is configured to identify, in real-time, the occurrence of a fall in progress of an individual from at least one of a standing state, a standing-to-seated transition, and a seated-to-standing transition.