Electronic Device Falling Detection via Acceleration Threshold
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Solution Overview
Problem
Electronic devices are prone to being lost when they fall out of pockets or bags, making it difficult for users to locate them, especially when in motion.
Innovation Solution
A system and method that utilizes a GPS, processor, and alarm modules within the device to detect a falling state by calculating altitude differences and triggering alerts if the acceleration exceeds the acceleration of gravity, including audible, vibration, and visual alarms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the device remains silent during falling to avoid false alarms, then user comfort is improved, but the ability to detect and alert actual falling events deteriorates
Solution Approach 1:
The system changes the parameter of alert activation from continuous to conditional by introducing a threshold comparison mechanism. The processor compares calculated acceleration against a predetermined threshold (acceleration of gravity) to determine when to activate alerts, thereby reducing false alarms while maintaining reliable falling detection.
Solution Approach 2:
The system implements feedback by continuously monitoring acceleration data, comparing it against gravitational threshold, and adjusting alert activation accordingly. This closed-loop approach ensures alerts are only triggered when actual falling exceeds normal motion, balancing user comfort with detection reliability.
2Reliability
If multiple alarm types (audible, visual, vibration) are activated during falling, then alert effectiveness is improved, but energy consumption increases
Solution Approach 1:
The system uses periodic action by activating alarms in a sequenced manner during the falling event. The processor can trigger audible, visual, and vibration alarms at different times or in combination, providing effective alerting while managing energy consumption through controlled activation periods rather than continuous operation.
Solution Approach 2:
The alarm activation is dynamic and conditional rather than static and continuous. The system adjusts which alarms are activated based on the detected falling state, allowing flexible energy management while maintaining alert effectiveness when needed.
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
Effectively alerts the user when the device is in a falling state, allowing for timely retrieval and reducing the likelihood of loss.
Implementation Method 1
The GPS 3 is operable to locate a position of the electronic device 1
Implementation Method 2
calculating an acceleration of the electronic device according to the altitude difference and the time interval
Implementation Method 3
an audible alarm, a vibration alarm, a blinking alarm
Implementation Method 4
an audible alarm, a vibration alarm, a blinking alarm
Data Source
AI summary
A system and method for detecting a falling state of an electronic device include setting a time interval to collect position information of the electronic device and one or more alarm means, activating a global position system to locate a position of the electronic device, and acquiring position information of the electronic device at each time interval. The system and method further include calculating an acceleration of the electronic device, and activating one or more of the alarm means if the calculated acceleration is larger or equal to the acceleration of gravity.