硅压阻式压力传感器误差修正算法的FPGA实现  

Realization of error correction method by FPGA for Si piezoresistive pressure sensor

作　　者：华振宇[1] 徐大诚[1] 

机构地区：[1]苏州大学微纳传感器研究中心,江苏苏州215100

出　　处：《传感器与微系统》2017年第2期101-103,106,共4页Transducer and Microsystem Technologies

摘　　要：针对现场可编程门阵列(FPGA)的输入输出(I/O)资源丰富、并行执行特点对设计大规模硅压阻式压力传感器补偿系统以及提高其补偿效率有一定的意义,提出了一种FPGA补偿系统设计方案并对传感器输入输出存在的非线性误差,设计了32位单精度浮点运算单元实现曲线拟合法中的多项式拟合算法,使用Verilog语言在Xilinx ISE中实现FPGA的逻辑设计、仿真和综合。结果证明:设计的可在FPGA中综合实现的多项式拟合算法效果显著,可以对非线性系统进行校正,有较高的应用价值。Aiming at abundent input/output （I/O） resource and parallel processing characters of field programmable gate array（FPGA） is of meaning for large-scale compensating system for Si piezoresistive pressure sensor and increasing its compensation efficiency is significative, a compensated system design scheme is proposed and aiming at nonlinear error of sensor input and output,design 32bit single-precision floating point unit（FPU） for realizing the polynomial curve fitting methods, Verilog language is used in Xilinx ISE to implement logic design, simutation and synthesis of FPGA. The results show that the polynomial fitting algorithm which can be realized in FPGA is effective, and it can be used for calibration of nonlinear system and has application value.

关 键 词：硅压阻式压力传感器 非线性校正 现场可编程门阵列 曲线拟合 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]