Method for calculating oil content in oil tank of unmanned plane

Abstract

The invention provides a method for calculating the oil content in an oil tank of an unmanned plane, belonging to the field of unmanned plane flight data detection. The invention is characterized by comprising an engine rotating speed sensor and the corresponding curve of the engine and oil consumption measured by an experiment method in advance. According to the engine rotating speed measured by the engine rotating speed sensor and oil consumption acquired through numerical fitting and corresponding to the current rotating speed, the consumed oil content after the engine of the unmanned plane is started can be obtained through integral. According to the primary oil content before the engine is started, the residual oil content in the oil tank can be obtained. The calculating method can obtain the residual oil content in the oil tank without other sensors according to the corresponding relationship of the engine oil consumption and the rotating speed for realizing measurement, i.e. the engine rotating speed and working time.

Description

technical field [0001] The invention is a method for calculating the fuel volume of the fuel tank of an unmanned aerial vehicle, which can continuously calculate the remaining fuel volume of the fuel tank with high precision by using the engine speed sensor and the previously measured engine-fuel consumption curve without installing a fuel tank sensor. Mainly used in aerospace, robotics and other technical fields. Background technique [0002] The amount of remaining fuel in the drone's fuel tank is a data volume that is crucial to flight safety. In the past, the oil volume of the fuel tank was usually obtained by installing ultrasonic liquid level detectors, photoelectric sensors and capacitive sensors in the fuel tank, or by installing flowmeters outside the fuel tank to obtain the fuel tank oil volume value. For ultrasonic liquid level detectors, photoelectric sensors and capacitive sensors, etc., it is necessary to open holes in the fuel tank, which is easy to cause lea...

AI Technical Summary

Problems solved by technology

For ultrasonic liquid level detectors, photoelectric sensors and capacitive sensors, it is necessary to open holes in the fuel tank, which is easy to cause leakage

In addition, the installation of electronic sensors in the fuel tank is prone to fuel explosion, which is potentially dangerous

In addition, due to the influence of the attitude of the UAV on the liquid level of the fuel tank during the flight of the UAV, it tends to tilt, and there are even severe shocks.

Therefore, it is difficult to use the method of installing a detector in the fuel tank to obtain the remaining fuel; the method of installing a flowmeter outside the fuel tank can measure the instantaneous fuel consumption, and the remaining fuel can be obtained after integration

However, there may be measurement errors in the flowmeter, and flowmeters with high precision and low flow are usually expensive

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