一种高精度加速度计数字采集电路设计  

Design of a high⁃precision accelerometer digital acquisition circuit

作　　者：邓盼盼 潘良 白亮 DENG Panpan;PAN Liang;BAI Liang(Xi’an Modern Control Technology Research Institute,Xi’an 710065,China)

机构地区：[1]西安现代控制技术研究所,陕西西安710065

出　　处：《电子设计工程》2023年第20期124-129,共6页Electronic Design Engineering

摘　　要：针对高精度惯性导航装置的需求,设计了一种高精度加速度计数字采集电路。电路采用单恒流源技术降低了电路功耗,采用温度补偿技术提高电路性能,采用FPGA数字集成技术提升电路可靠性。通过对电路的稳定性、线性度、对称性、温度特性等指标的测试,电路稳定性不大于6×10^(-6),线性度和对称性均不大于15×10^(-6),温度系数小于0.5×10^(-6)/℃,该电路性能良好,可满足高精度惯性导航装置工程应用需求。According to the requirements of high⁃precision inertial navigation device,a high⁃precision accelerometer digital acquisition circuit is designed.The circuit adopts single constant current source technology to reduce the circuit power consumption,temperature compensation technology to improve the circuit performance,and FPGA digital integration technology to improve the circuit reliability.After testing the stability,linearity and temperature characteristics of the circuit,the stability of the circuit is less than or equal to 6×10^(-6),the linearity and symmetry are not more than 15×10^(-6),and the temperature coefficient is less than 0.5×10^(-6)/℃.The circuit has good performance and accuracy,which can meet the engineering use.

关 键 词：I/F转换电路 加速度计信号采集 单恒流源 高精度 

分 类 号：TN792[电子电信—电路与系统]