基于FPGA的无源TPMS定点小数除法  

Implementation of fixed-point decimal division of passive TPMS based on FPGA

作　　者：周美兰[1] 李思[1] 李天利[2] 张涛[1] 

机构地区：[1]哈尔滨理工大学电气与电子工程学院,哈尔滨150080 [2]深圳大学机电与控制工程学院,深圳518000

出　　处：《黑龙江大学自然科学学报》2011年第1期121-126,共6页Journal of Natural Science of Heilongjiang University

基　　金：黑龙江省教育厅科学技术研究项目(11551072)

摘　　要：为高精度提取SAW传感器的信息,提高传感器的测量精度和灵敏度,进一步减小测量误差,利用FPGA实现数字信号下变频,对信号实行中频采样,使得A/D变换的采样通道数由传统模拟式I、Q检波时的双通道变为对中频直接采样的单通道,运用定点小数除法实现基带信号I、Q的相位处理,提高了相位检测精度。仿真结果表明,基于FPGA的不恢复余数法小数除法算法达到了设计的要求,同时也说明了基于FPGA的定点小数除法具有相当高的精确度。In order to extract the information of SAW sensors with high precision, improve the sensor＇ s accuracy and sensitivity, and reduce the measurement error further. It is implemented digital signal down converter by cy- clone series FPGA made in ALTERA company, and the implementation of the signal sampling, what makes the A/ D transformation of the sample from the traditional analog channels I, Q demodulation into two channels when direct sampling of the IF channel. The use of fixed-point decimal division to achieve the base band signal I, Q phase of treatment to improve the accuracy of phase detection. The simulation results not only show that the FPGA-based method that does not restore the balance decimal division algorithm to achieve the design requirements, but also show that the fixed-point FPGA-based division has a very high decimal precision.

关 键 词：FPGA TPMS 数字下变频 定点小数除法 

分 类 号：TP277[自动化与计算机技术—检测技术与自动化装置]