一种具有双重输出功能的超声波测距系统  

The design of ultrasonic ranging sensor with dual output functions

作　　者：宋学坤[1] 陈迎春 赵进创[1] 

机构地区：[1]广西大学计算机与电子信息学院,南宁530004 [2]上海宝信西南研发中心,重庆400038

出　　处：《微计算机信息》2007年第06S期168-170,167,共4页Control & Automation

基　　金：广西自然科学基金项目(桂科自0135059);广西科技攻关项目(桂科攻0322012-5)

摘　　要：本文研究了以AT89C2051单片机为核心的超声波测距传感器的工作原理,系统组成,硬件电路和软件设计方法。创造性地引入了ISD1420语音芯片电路,与LED相结合,使系统同时具有数码显示和自动语音报数双重结果输出功能,适于在特殊环境下和特殊人群使用,更具有便捷性和新颖性。同时分析了温度补偿问题和盲区问题,提出了解决方法。This paper describes the principle of the ultrasonic measuring system based on AT89C2051 in detail, presents the architecture of the system, circuit diagram and the software. The novelly introducing of ISD1420 voice chip to the system, which is combined with LED display circuit, make the measuring system have dual output functions, and is more suitable to be used in specific environment or by special group with visual impairment. It is also a helpful attempt to intelligent movement robot. The temperature compensation and blind field problem in data processing are also analyzed and solved.

关 键 词：超声波 测距传感器 AT89C2051单片机 ISD1420芯片 自动语音报数 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]