PNEUMATIC PRESSURE DETECTION DEVICE

摘要

A pneumatic pressure detecting apparatus is provided to improve calculating speed by changing pneumatic pressure into altitude through Taylor series. A temperature sensor(220) detects ambient temperature of the surrounding of an aircraft. A pneumatic sensor module(215) detects pneumatic pressure of the surrounding of the aircraft. A conversion unit changes the pneumatic pressure into altitude conversion value by using approximation Taylor series in consideration of the compensation about the ambient temperature. The compensation about the ambient temperature uses a lookup table for temperature compensation stored in a storage. The lookup table for the temperature compensation shows relation between pneumatic pressures variously detected in various temperature range.