基于FPGA的高精度超声波测距仪设计  

Design of high-precision ultrasonic range finder based on FPGA

作　　者：杨秀增[1] 杨仁桓[2] YANG Xiuzeng YANG Renhuan(Department of Physics and Electronic Engineering, Guangxi Normal University for Nationalities, Chongzuo 532200, China College of Information Science and Technology. Jinan University. Guangzhou 510632. China)

机构地区：[1]广西民族师范学院物理与电子工程系,广西崇左532200 [2]暨南大学信息科学技术学院,广东广州510632

出　　处：《现代电子技术》2017年第1期137-139,144,共4页Modern Electronics Technique

基　　金：国家自然科学基金资助项目(61302131;61075068);广西科学研究与技术开发项目(2015AA08210)

摘　　要：为了提高超声波的测量精度,利用FPGA技术设计一款高精度超声波测距仪。利用QuartusⅡ软件在一片高密度的可编程逻辑门列阵(FPGA)上,设计基于So PC的硬件系统平台,并利用NiosⅡEDS开发软件开发测量仪的软件系统。利用FPGA内部的硬件资源设计高速度的超声波控制器,采用温度传感器DS18B20测量环境温度,并利用温度修正超声波传播速度。测试表明,利用该方案设计的超声波测距仪具有较高的距离测量精度,有一定的实用推广价值。In order to improve the measurement accuracy, a high-precision ultrasonic range finder was designed based onfield programmable gate array （FPGA） technology. The hardware system platform based on SoPC was designed on a high-densityFPGA by using Quartus Ⅱ software. The Nios II EDS development software is used to develop the software system of the rangefinder. The hardware resource inside FPGA is adopted to design the high-speed ultrasonic controller. The temperature sensorDS18B20 is employed to measure the environment temperature. The temperature is used to correct the ultrasonic propagation ve-locity. The test results show that the ultrasonic range finder has high range measuring precision, and a certain practical promo-tion value.

关 键 词：超声波 非接触式测距 编程逻辑门列阵 NiosⅡ DS18B20 

分 类 号：TP277[自动化与计算机技术—检测技术与自动化装置]