Two kinds of temperature measuring circuits are designed through analyzing the principle of two temperature sensor used in the flight control system and discussing the implementation method of nonlinear correcting hardward and solfward of the platinum resistor.They have advantages of small size
simple circuit construction
easy debugging
wide measuring range
high reliability and being easy to use.The experimental results show that two kinds of temperature sensors meet nicely the demand which UAV can respond to low ambient temperature in time
improving the reliability and security of UAV during carrying out missions.