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Ground risk evaluation method in unmanned aerial vehicle operation safety risk evaluation

A technology for operating safety risks and UAVs, which is applied in the field of ground risk assessment in UAV operation safety risk assessment, can solve the problems of lack of UAV operation safety risk assessment models and methods, and achieve rich means of information acquisition , wide coverage and comprehensive effects

Active Publication Date: 2020-05-19
北航(四川)西部国际创新港科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects of the prior art, the present invention provides a method for assessing the ground risk in the risk assessment of unmanned aerial vehicle operation safety, so as to solve the problem of lack of the current risk assessment model method for unmanned aerial vehicle operation

Method used

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  • Ground risk evaluation method in unmanned aerial vehicle operation safety risk evaluation
  • Ground risk evaluation method in unmanned aerial vehicle operation safety risk evaluation
  • Ground risk evaluation method in unmanned aerial vehicle operation safety risk evaluation

Examples

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Effect test

Embodiment 1

[0136] Embodiment 1: The ground risk assessment and analysis of Talon UAV colliding with general aviation aircraft in the air:

[0137] According to the steps of the method of the present invention, the relevant parameter information and environmental parameters of the Talon UAV are first obtained, as shown in Table 3.

[0138] Table 3 UAV simulation parameter table

[0139]

[0140] Assuming that the cause of UAV system failure is air collision, the calculation of air collision probability needs to know the parameters of UAV and other aircraft, including the air traffic density in the operating area. Since the parameters of other aircraft and air density are unknown, so at this time Reasonable assumptions based on the literature are required. Relevant data can also be obtained by monitoring air traffic in the region. The monitoring method can be to record the distribution of other aircraft in the airspace multiple times, divide the number of aircraft in the airspace by t...

Embodiment 2

[0151] Embodiment 2: Assessment and analysis of the ground risk when the Talon UAV system fails:

[0152] According to the steps of the method of the present invention, the relevant parameter information and environmental parameters of the Talon UAV are first obtained, which is the same as that in Embodiment 1.

[0153] Assuming that the cause of UAV system failure is system failure, the possibility of UAV ballistic descent and gliding descent due to system failure is estimated according to relevant information and literature, as shown in Table 5.

[0154] Table 5 System Failure Probability

[0155] ballistic drop gliding descent Failure rate (per flight hour) 1 / 200 1 / 200

[0156] Also due to the lack of experimental results in this regard, three situations are assumed in the simulation: ballistic descent, gliding descent, and a combination of the two methods of descent (assuming that after mid-air collisions, 70% may descend by ballistic descent, and...

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Abstract

The invention discloses a ground risk evaluation method in unmanned aerial vehicle operation safety risk evaluation. The method comprises the following steps that specific parameter information and operation and scene information of an unmanned aerial vehicle are acquired; determining failure reasons of the unmanned aerial vehicle; determining a descending mode caused by failure of the unmanned aerial vehicle; uncertain parameters are integrated, and a ground collision probability density function is determined; simulating the population density model to obtain a final unmanned aerial vehiclefailure ground risk result; the method has the advantages that the types are comprehensive, the coverage range is wide, and powerful support is provided for accurately evaluating the risk to the ground when the unmanned aerial vehicle operation system fails. Death of people on the ground caused by ground collision is considered, and casualties caused by collision between the air and the manned aerial vehicle are also considered. And a more comprehensive and reliable evaluation result is obtained.

Description

technical field [0001] The present invention relates to the technical field of unmanned aerial vehicles, in particular to an assessment method for ground risk in unmanned aerial vehicle operation safety risk assessment. Background technique [0002] In recent years, the drone industry has developed rapidly, but the challenges brought by drones have limited their operation. One of the important non-technical challenges is that the lack of an effective safety regulatory system will hinder the integration of drones into national airspace and limit the use of drones in military and civilian fields. This also puts the airworthiness standard formulation and risk assessment of drones on the agenda. In February 2019, the Civil Aviation Administration promulgated specific UAV trial operation management regulations (provisional), which uses the Specific Operations Risk Assessment (SORA) method to manage the operation of UAVs with high safety risks. , to approve the implementation of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/15G06F30/20
CPCY02P90/30
Inventor 周强张学军张杰玮
Owner 北航(四川)西部国际创新港科技有限公司
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