摘要
设计了一种机载光纤陀螺多路测温系统,系统以FPGA为核心控制电路,设计并实现了基于二线制恒压源驱动温敏电阻的高精度、低延时温度测量系统,分析了恒压源电路、信号放大电路、数模转换器电路、多路选择器电路以及跟随器电路的设计与实现,阐述了FPGA逻辑的实现以及软件驱动的实现。经测试和验证,系统稳定可靠,采集精度为0.1℃,满足设计指标和要求。
The paper introduces the design of a Multichannel temperature measurement system for AIR- BORNE FOG（ fiber optic gyro）, the paper designs and realizes the high- precision, low- Delay temperature measurement system which is driven by two- wire constant- voltage source base on the FPGA, it ana- lyzes the design and implementation of the constant- voltage source circuit, signal amplifier circuit, AD circuit, analog multiplexers circuit and follower circuit. Through test and verification it is shown that the system is stable and reliable, the precision of the system is 0. 1 ℃, the system meets the requirements of the design specifications.
出处
《航空计算技术》
2017年第6期104-108,共5页
Aeronautical Computing Technique
基金
航空科学基金资助项目(2015ZC31005)
关键词
温敏电阻
纤陀螺
高精度测温系统
FPGA
temperature- sensitive resistor
fog
precision temperature measurement system
FPGA
