| 基于单片机的高精度超声波液位检测系统 |
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| 引用本文： | 李春玲.基于单片机的高精度超声波液位检测系统[J].电子科技大学学报(社会科学版),2006(3). |
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| 作者姓名： | 李春玲 |
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| 作者单位： | 南昌陆军学院科文教研室 南昌330103 |
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| 摘 要： | 介绍一种使用超声波进行液位检测的微机控制系统及其硬件组成及相应软件流程图。为使测量具有较高的精度,系统在测量方式上采用在容器底部放置超声波探头的回波检测法,使超声波在液体中来回传播以稳定超声波传播速度;在硬件上引入专用定时芯片8254,以提高传播时间的分辨率,同时8254的时标信号由具有较高稳定频率的多谐振荡电路产生;在软件算法上减少舍去误差。系统测量精度可准确到厘米。
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| 关 键 词： | 超声波 单片机 液位检测 高精度 |
High Precise Measurement System of Supersonic-Wave Fluid-Surface-Height Based on Single-Chip-Microcomputer |
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| LI Chun-ling.High Precise Measurement System of Supersonic-Wave Fluid-Surface-Height Based on Single-Chip-Microcomputer[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),2006(3). |
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| Authors: | LI Chun-ling |
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| Abstract: | This paper introduces a single-chip-microcomputer control system for supersonic-wave fluid-surface-height measurement and the hardware circuit and the software flow chart of the control system. In order to achieve high precision of measurement,the supersonic-wave sensor is set under the container to make supersonic-wave stable. And the integrated circuit 8254 is used in the system, its CLK is provided by an oscillation circuit of high frequency stability. The measurement result shows that the precision of the system reaches centimeter. |
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| Keywords: | supersonic-wave single-chip-microcomputer fluid-surface-height measurement high precision |
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