METHOD OF MEASUREMENT OF BAROMETRIC PRESSURE ON UNLANDLESS AIRCRAFT FOR AUTOMATIC HEIGHT DETERMINATION

Abstract

The use of unmanned aerial vehicles is becoming increasingly popular in the actions of rescue teams. The most commonly used unmanned aerial vehicles are multicopters capable of vertical takeoff and hovering, as well as aircraft or motor gliders that take off from a place or a special catapult. The choice of the appropriate type of UAV entails taking into account certain advantages and disadvantages. The main disadvantage of multi-propeller aircraft is their longevity, as a rule, it is in the range from 1 to 60 minutes, depending on battery capacity. On the other hand, the main advantage of multi-propeller aircraft is their maneuverability, which in combination with their equipment with a special camera can significantly reduce the impact of terrain conditions when using UAVs for search activities.

It is worth noting that UAVs have always been an achievement of military technology, but recently such representatives of drones as quadcopters, are gaining their place in various spheres of civilian life. Drones predict the fate of mobile phones, that is, in the near future they may become an indispensable attribute of our lives. This is due to the relatively low cost of these devices, ease of operation, low operating and maintenance costs.

The report discusses the method of measuring barometric pressure on unmanned aerial vehicles for automatic altitude determination. Measurements are performed using the leveling method and Laplace and Babine calculation formulas. The work is aimed at automatically determining the height of the UAV by taking barometric pressure readings, collecting and transmitting data to the operator's panel of the unmanned aerial vehicle. A program has been created that reads a certain sample of values and averages the atmospheric pressure readings and then calculates the altitude values. The program code is described in detail and step by step, block diagrams are given.