| 张延成,李志刚.基于LMS自适应时延估计和FPGA的超声波测风系统研究[J].,2013,32(1):51-56 |
| 基于LMS自适应时延估计和FPGA的超声波测风系统研究 |
| The ultrasonic wind measurement system based on LMS adaptive time delay estimation algorithm and FPGA |
| 投稿时间：2012-06-18 |
| 中文摘要: |
| 利用超声波传感器进行风速测量时，温度对超声波传播有很大影响，时延估计对超声波测风系统的精度起到很大的作用。本超声波测风系统为避免温度对风速测量中的影响，采用了基于时差法的测量原理，为了提高时延估计值的精度，提出了基于最小均方(LMS)自适应时延估计的测量方法，研制了以单片机Atmega128和现场可编程门阵列(FPGA)为核心的硬件系统。仿真和实际测试的结果表明，该超声波测风系统的时延估计值精确度较高，具有很高的应用价值。 |
| 英文摘要: |
| In the case of application of ultrasonic sensor for wind speed measurement, the temperature has an important influence on ultrasonic propagation, and the time delay plays a vital role in the system of ultrasonic wind speed measurement. The method based on Least Mean Square (LMS) adaptive time delay estimation algorithm is proposed to gain higher precision, a hardware system consists of Microprocessor Atmega128 and Field Programmable Gate Array (FPGA) is completed. Finally, the simulation and measurement results show that the time delay estimation has a higher accuracy and the system of ultrasonic wind measurement has higher application value. |
| DOI：10.11684/j.issn.1000-310X.2013.01.009 |
| 中文关键词: 超声波传感器，自适应时延估计，测风速，FPGA |
| 英文关键词: Ultrasonic sensor, Adaptive time delay estimation, Wind measurement, Field programmable gate array |
| 基金项目: |
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