摘要
针对如何提升超声波测距量程,基于超声波测距渡越时间法原理,建立了超声波传播中遇障反射回波的强度模型并通过实验验证,提出了超声波传感器最优激励信号确定方法与激励信号最优参数测定试验;以T/R40-16压电式收发分离超声波传感器为例,将模型分析与实验得出的优化输入到原来的测距系统中,实验对比结果表明,在不提高系统硬件成本前提下,测距装置量程由原来的30~200 cm提升到30~550 cm,为基于压电式超声波传感器的大量程超声波测距系统的研究提供借鉴与思路。
In view of how to improve the range of ultrasonic distance measurement, based on time-offlight principle of ultrasonic ranging. Establishing the intensity model of the reflected echo in encountering obstacles in ultrasonic wave propagation,and tested by experiments.Put forward the optimal excitation signal determination method and optimal parameter measurement experiment of the ultrasonic sensor.Taking the T/R40-16 transmit/receiver respectively piezoelectric ultrasonic sensor as an example,integrating the model analysis and research conclusion into software and hardware of the newly designed ultrasonic ranging system. The experimental comparison results show that the range of distance measurement is increased from 30~200 cm to 30~550 cm. Provide a reference and thinking for the research of large-rangeultrasonic ranging systems.
作者
孙辉
燕南飞
SUN Hui, YAN Nan-fei(Xi＇an Research Institute of China Coal Technology and Engineering Group Corp, Xi＇an 710077, Chin)
出处
《煤矿机械》
北大核心
2018年第5期39-42,共4页
Coal Mine Machinery
关键词
超声波
测距定位
量程
回波强度模型
最优激励信号测定
ultrasonic
ranging and positioning
range
echo intensity model after reflection accuracy
optimal excitation signal determination
