| 移频键控信号测量系统误差分析与补偿 |
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| 引用本文： | 马帅旗,鲍存会. 移频键控信号测量系统误差分析与补偿[J]. 机车电传动, 2011, 0(5): 59-61,82 |
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| 作者姓名： | 马帅旗 鲍存会 |
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| 作者单位： | 陕西理工学院电气工程系,陕西汉中,723003 |
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| 摘 要： | 为了提高轨道电路移频键控信号(FSK)的测量精度,给出了一种基于FPGA+ARM处理器的移频键控信号测量与误差补偿方法.该方法在FPGA中利用量化时钟实时测量载波信号的周期,并将测量数据经过缓存后传输给ARM处理器.ARM处理器对测量的载波信号周期数据及产生测量误差的主要原因进行分析,并对载频信号上、下边频切换时产生的...
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| 关 键 词： | 轨道电路 移频键控 时间间隔误差 畸变数据 信号 测量系统 |
Error Analysis and Compensation of Frequency Shift Keying Signal Detection System |
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| MA Shuai-qi,BAO Cun-hui. Error Analysis and Compensation of Frequency Shift Keying Signal Detection System[J]. Electric Drive For Locomotive, 2011, 0(5): 59-61,82 |
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| Authors: | MA Shuai-qi BAO Cun-hui |
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| Affiliation: | MA Shuai-qi,BAO Cun-hui(Department of Electrical Engineering,Shaanxi University of Technology,Hanzhong,Shaanxi 723003,China) |
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| Abstract: | A method was developed to improve the measurement accuracy of track circuit frequency shift keying(FSK) signal by using FPGA and ARM processor.The quantization timer was used to measure the periods of FSK signal in FPGA,and then data was translated to ARM after temporarily stored in dual-port RAM.The ARM processor analyzed the period of the high frequency carrier signal and the main reasons for causing FSK error,and compensated the distortion data which caused by switching of up frequency and down frequency... |
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| Keywords: | track circuit FSK time interval error distortion data signal measurement system |
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