Detachable Alarm Device for UAV Crash Warning
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Solution Overview
Problem
Existing unmanned aerial vehicles (UAVs) fail to reliably alert individuals on the ground of abnormal situations, such as impending crashes, especially at high altitudes, due to insufficient warning signals.
Innovation Solution
An unmanned flight equipment equipped with an abnormality recognition system that detaches a dedicated alarm device, which includes sound, light, and smoke emitters, to warn individuals of potential crashes, allowing for timely evacuation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the alarm device is kept attached to the aerial vehicle, then the warning signal can be emitted, but the warning is not sufficiently strong or noticeable at high altitudes
Solution Approach 1:
The alarm device is separated from the aerial vehicle into an independent detachable unit. This segmentation allows the alarm device to be released and descend independently to lower altitudes where persons on the ground can more easily notice the warning signals, thereby improving warning effectiveness without requiring excessive light intensity at high altitude
Solution Approach 2:
The alarm device acts as an intermediary between the aerial vehicle and persons on the ground. By detaching and descending independently, it serves as a mediator that delivers the warning signal to ground personnel at an optimal altitude for visibility and audibility, resolving the contradiction between maintaining attachment for signal emission and achieving sufficient signal strength
2Loss of time
If the alarm device emits strong light and sound at high altitude, then persons on the ground can notice the warning, but the alarm device must remain attached to the aerial vehicle
Solution Approach 1:
The alarm device is designed to be detachable and is released in advance before the aerial vehicle reaches the ground. This preliminary action of detaching and descending early provides sufficient warning time to persons on the ground while maintaining simple operation through automatic or pre-programmed release mechanisms
Solution Approach 2:
The alarm device transitions from a static attached state to a dynamic detached descending state. This dynamic operation allows the device to optimize its position for warning effectiveness while maintaining ease of operation through automated release and descent control
3Reliability
If the alarm device is detached from the aerial vehicle, then the warning can reach persons on the ground more effectively, but the device becomes separate and harder to control
Solution Approach 1:
The system is segmented into the aerial vehicle and the detachable alarm device. This segmentation improves warning delivery by allowing independent descent of the alarm device to optimal notification altitude while maintaining manageable system complexity through modular design with standardized release mechanisms
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 alerts individuals on the ground of abnormal UAV situations, reducing potential damage by providing early warning and allowing sufficient time for evacuation, while maintaining the UAV's payload capacity and avoiding weight increases.
Implementation Method 1
an alarm device including a red-light emitting diode
Implementation Method 2
an alarm device sound emitter
Data Source
AI summary
An unmanned flight equipment according to an embodiment of the present invention includes: an aerial vehicle capable of flying in an unmanned manner; an abnormality recognition part-configured to recognize an abnormal situation in which a determination is made that it is difficult for the aerial vehicle to continue flight; and an alarm device held on the aerial vehicle and configured to be detached from the aerial vehicle and to warn neighborhood of abnormality when the abnormality recognition part recognizes the abnormal situation.