Wearable Fall Detection via Multi-Sensor Fusion
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Solution Overview
Problem
Conventional fall detection technologies, such as video monitoring and acoustic vibration monitoring, are either expensive, have high false detection rates, or are limited in area coverage, making them inadequate for effectively detecting falls, especially for elderly individuals alone.
Innovation Solution
A wearable device equipped with sensors to collect acceleration, pressure, and temperature data, which processes this information to determine if a fall has occurred and transmits a notification signal through various communication networks, including Bluetooth, Wi-Fi, and satellite, to alert caregivers or emergency services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If video monitoring is used for fall detection, then area coverage is improved, but device cost and false detection rate increase
Solution Approach 1:
The patent replaces video monitoring (optical system) with a mechanical sensing system using accelerometers, pressure sensors, and temperature sensors to detect falls. This substitution reduces false detection rates while maintaining area coverage through wireless communication capabilities.
Solution Approach 2:
The wearable device integrates multiple sensor types (acceleration, pressure, temperature) to perform multiple functions: fall detection, location tracking, and environmental monitoring. This multi-functionality reduces reliance on单一 video monitoring systems while improving reliability.
2Reliability
If acoustic vibration monitoring is used for fall detection, then device cost is reduced, but area coverage is limited
Solution Approach 1:
The patent transitions from acoustic vibration monitoring (one-dimensional sound wave detection) to multi-dimensional sensing by incorporating accelerometers, pressure sensors, and temperature sensors. This dimensional expansion enables both reduced false detection rates and extended area coverage through wireless communication.
3Ease of operation
If conventional fall detectors are used, then fall detection capability is provided, but false alarms increase and area coverage is limited
Solution Approach 1:
The patent merges multiple sensor types (acceleration, pressure, temperature) into a single wearable device to detect falls. This combination enables cross-validation of sensor data, reducing false alarms while maintaining ease of operation and expanding area coverage through wireless communication.
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 wearable device provides accurate and reliable fall detection, reducing false alarms and increasing area coverage, ensuring timely assistance for individuals who fall, particularly the elderly, by using a combination of sensors and communication methods.
Implementation Method 1
a first sensor configured to collect acceleration data
Implementation Method 2
at least one of a second sensor configured to collect pressure data
Implementation Method 3
or a third sensor configured to collect temperature data
Data Source
AI summary
Devices, systems, and methods are disclosed for detecting falls and transmitting notifications. One embodiment includes a wearable device. The wearable device may include a first sensor configured to collect acceleration data, and at least one of a second sensor configured to collect pressure data or a third sensor configured to collect temperature data. The wearable device may also include an antenna and a processor. The wearable device may also include a non-transitory computer-readable storage medium storing instructions that, when executed by the processor, cause the processor to receive the acceleration data and at least one of the pressure data or the temperature data, process the acceleration data and at least one of the pressure data or the temperature data, and control, when the processor determines that a person falls, the antenna to transmit a signal.