Matrix Thermal Sensor Fall Detection with Multi-Zone Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing fall detection systems often produce false positive readings, such as detecting a person bending or an animal following the person, which can lead to unnecessary alarms.
Innovation Solution
A device utilizing a matrix thermal sensor, which can distinguish between an immobile person and other heat sources, and electronic processing means to analyze pixel data and determine the presence and position of a person, thereby confirming or disproving a fall.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If movement sensors are used to detect falls, then fall detection capability is provided, but false positive detections occur
Solution Approach 1:
The detection system is divided into multiple independent detection zones (first detection zone and second detection zone) with different heights. The first sensor detects in the first zone while the second sensor detects in the second zone. This segmentation allows the system to distinguish between different types of movements by analyzing which zones are activated, thereby reducing false positives while maintaining fall detection capability.
Solution Approach 2:
The invention adds a vertical dimension to detection by positioning sensors at different heights (first detection zone above a reference plane, second detection zone below the reference plane). This dimensional approach enables the system to differentiate between falls (which would activate both zones) and other movements like bending or sitting (which would activate only one zone), thus improving detection accuracy without sacrificing reliability.
2Measurement precision
If multiple sensors are deployed to reduce false positives, then detection accuracy improves, but device complexity increases
Solution Approach 1:
The invention combines multiple detection zones and sensors into a single integrated device housing. The first sensor and second sensor are positioned within the same device structure, with their detection zones coordinated to work together. This merging approach improves detection accuracy through multi-zone monitoring while containing the complexity within a unified device rather than requiring separate distributed sensors.
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 solution effectively minimizes false positives by accurately differentiating between a person who has fallen and other heat sources or movements, providing reliable fall detection.
Implementation Method 1
The invention relates to a device for detecting the fall of a person, comprising at least one matrix thermal sensor
Data Source
AI summary
Disclosed is a device for detecting the fall of a person, comprising at least one matrix thermal sensor (2), preferably a matrix thermopile sensor.