一种航空发动机转速测量电路

The Speed Acquisition Circuit Of Aircraft Engine

发动机转速对于飞机而言是一个非常重要的信息,关系到飞行的安全。针对飞机发动机转速的测量必须应用到频率采集电路,该文就一种可使用范围较广的频率采集电路为研究对象,论述了频率采集电路的硬件原理,针对关键的技术实现进行计算分析,通过仿真的手段及在实际电路应用中采集值与实际施加频率的对比,对该频率采集电路进行验证,实验结果证明,该频率采集电路在实际应用中效果比较良好,能比较精确的获取频率信息。

Engine speed is very important information for aircraft,which related to the safety of flight.A frequency acquisition circuit is essential formeasuring aircraft engine speed.This paper discuss the hardware schematic of a wider applicable range frequency acquisition circult.We make somecalculations and analyses on the key techniques.This frequency acquisition circuit has been validated by means of simulation and comparing the acquisition value with the actual frequency of the applied in practical application.Experimental result show that this frequency acquisition circuithas a good performance in practical application and get frequency information accurately.