摘要
航空发动机通常采用热电偶温度传感器。热电偶信号为小电压信号,其采集包含滤波网络、放大电路、AD采集电路三部分,同时在采集过程中,需要对其进行冷端补偿。通过系统软件对采集信号进行处理,从而提高采集结果的精度。该设计具有良好的工程应用价值。
Aero engine usually uses thermocouple temperature sensor,the thermocouple signal is a low voltage signal,and its acquisition includes three parts:filter network,amplifier circuit,AD acquisition circuit,at the same time,in the process of collecting,it is necessary to compensate the cold end for the acquisition signal.The acquisition signal is processed by the system software to improve the acquisition precision.This design has a certain practical value.
作者
刘夏青
吴斌
蔡晓乐
於二军
Liu Xiaqing;Wu Bin;Cai Xiaole;Yu Erjun(Xi’an Aeronautics Computing Technique Research Institute,AVIC,Xi’an Shaanxi 710065,China)
出处
《山西电子技术》
2018年第3期20-22,共3页
Shanxi Electronic Technology
基金
航空科学基金项目(2016ZC31004)
关键词
发动机
温度采集
热电偶
冷端补偿
engine
temprature acquisition
thermocouple
cold end compensation
