Protective Headgear Impact Monitoring via Sensor Fusion
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Solution Overview
Problem
Conventional protective headgear monitoring systems face limitations in accurately detecting and analyzing impact events on the head, as they often rely solely on acceleration data without considering energy dissipation rates or mass, which can lead to false positives or missed severe impacts.
Innovation Solution
A system comprising a wireless device mounted on protective headgear that includes a sensor module with both accelerometers and gyroscopes, generating event data that includes power data calculated from velocity and acceleration over time, transmitted to a handheld communication device for further processing and display, providing a simulation of the impact on the head and potential for brain injury analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional protective headgear monitoring systems rely solely on acceleration data, then the device complexity is reduced, but the measurement precision of impact events deteriorates
Solution Approach 1:
The patent combines multiple sensor types (accelerometers and gyroscopes) into a unified monitoring system. The accelerometer measures linear acceleration while the gyroscope measures angular velocity, and both data streams are integrated to calculate power data and provide comprehensive impact analysis, resolving the contradiction between device simplicity and measurement precision
Solution Approach 2:
The monitoring system performs multiple functions using the sensor array: it detects linear acceleration, detects angular velocity, calculates power data representing energy dissipation rates, and provides comprehensive impact analysis. This multi-functionality approach allows the system to maintain reasonable complexity while significantly improving measurement precision across multiple impact parameters
2Device complexity
If conventional systems do not consider energy dissipation rates or mass, then the device complexity is reduced, but the reliability of impact assessment deteriorates
Solution Approach 1:
The patent introduces power data as a new calculation parameter that represents energy dissipation rates during impact events. By calculating power from velocity and acceleration measurements, the system transforms basic sensor data into meaningful impact severity indicators, improving reliability without requiring direct mass measurements or overly complex device architecture
Data Source
AI summary
A protective headgear includes, for example, a headgear body that is wearable on a head of the wearer having a top slot in a top portion of the headgear body, wherein the top slot runs from a front portion of the headgear body that covers a forehead of the wearer to a back portion of the headgear body that covers a back of the head of the wearer. A top piece slidably attaches to the headgear body to cover the top slot, wherein the top piece diffuses energy from an impact to the protective headgear by sliding within the top slot. Other embodiments are disclosed.