Unmanned plane pressure altitude change rate measurement system

Abstract

The invention provides an unmanned plane pressure altitude change rate measurement system. The system comprises an atmosphere static pressure transducer, a temperature transducer, a signal processing circuit, an A / D converter and a micro controller unit; an acquired atmospheric pressure signal and an acquired temperature value signal are transmitted to the signal processing circuit through the atmosphere static pressure transducer and the temperature transducer arranged on an unmanned plane, a signal processed by the signal processing circuit is transmitted to the A / D converter, and a signal through the AD conversion is sent to the micro controller unit; the uncorrected pressure altitude change rate is fast resolved by using linear interpolation, and is corrected by using a software compensating method so as to obtain the final pressure altitude change rate. The atmosphere static pressure transducer is used for measuring the atmosphere static pressure change rate to obtain the value of the pressure altitude change rate, the measurement speed of the system is increased, the measurement precision of the system and the accuracy of the unmanned plane pressure altitude change rate are obviously improved; meanwhile the security of the unmanned plane is improved.

Description

technical field [0001] The invention relates to an unmanned aerial vehicle system, in particular to a measurement system for an unmanned aerial vehicle. Background technique [0002] At present, UAV technology is developing rapidly, and accurate atmospheric data information plays a considerable role in improving flight safety, accuracy and economy. Among the many parameters of atmospheric data information, the rate of change of pressure altitude is one of the important parameters. [0003] The book "Atmospheric Data Computer System" proposes that the existing systems for measuring the rate of change of air pressure altitude are usually composed of GPS modules, or use advanced closed-loop servo loop technology to transmit the results of altitude function settlement to the air data information system. The accuracy of the measurement system using the GPS module is very poor, the signal is easily affected by external interference, and often has an offset of tens of meters; whil...

AI Technical Summary

Problems solved by technology

The accuracy of the measurement system using the GPS module is very poor, the signal is easily affected by external interference, and often has an offset of tens of meters; while the system using the closed-loop servo loop technology has a delay error, and every time an atmospheric data function is added, it is necessary to There is a new corresponding servo system and a function solver, which seriously affects the accuracy of the measurement and limits the development of UAVs

Images