AIR DATA SENSOR DEVICE

摘要

Disclosed is a multifunctional air data sensor device employing the characteristics of flow around a cylinder. In an air data sensor device: the sensor device comprises a sensor measuring unit and a signal processing unit; the sensor measuring unit takes the form of a cylinder which comprises a main sensor body formed so as to be hollow on the inside, a plurality of pressure-measuring holes formed on the outside of the main sensor body and a thermostat attached to one side of the main sensor body; and the signal processing unit comprises a pressure sensor coupled to the pressure-measuring holes and a microprocessor which is coupled to the pressure sensor and carries out calculations, wherein a main pressure-measuring hole which has the largest pressure value is selected from among the plurality of pressure-measuring holes, and then the pressure distribution is calculated and the result is used in order to calculate at least one of: the angle of attack, the static pressure and the total pressure. The present invention not only entails few errors when determining the angle of attack, static pressure and/or total pressure and in particular allows rapid and accurate calculation even under conditions of low speed and high angle of attack, but it is also constituted such that a heater can easily be inserted for use in aircraft in order to prevent freezing, thereby allowing the problem of icing to be prevented despite being compact and lightweight, and the number of sensors around the cylinder can be increased so as to proportionately expand the region of measurement of the angle of attack for the same degree of measurement precision.