基于PIC单片机的超声波测距系统  

Ultrasonic Distance Measurement Instrument Based on PIC Monolithic Machine

作　　者：何莉[1] 曾宪文[2] 徐霞[1] 

机构地区：[1]重庆工学院电子信息与自动化学院,重庆400050 [2]重庆大学机械传动国家重点实验室,重庆400044

出　　处：《压电与声光》2004年第2期155-157,共3页Piezoelectrics & Acoustooptics

摘　　要：针对普通超声波测距系统抗干扰能力一般,该文介绍了一种由PIC16F876单片机控制的实时超声波测距系统,电路主要采用COMS集成芯片且给予了温度补偿,其抗干扰能力强,测距频率达20Hz。并用于汽车安全系统能实时监测车身侧面与障碍物之间的距离,满足了汽车侧面实时防撞的要求。Comparing with the anti-jamming capacity of common ultrasonic telemeter system, this article introduces a real-time system of ultrasonic distance measurement instrument which was controlled by PIC16F876 SCM. The circuit adopts integrated COMS chip temperature compensation, which has better anti-jamming capacity .The frequency of the telemeter is up to about 20 Hz and the system can inspect the distance between the bodywork flank and the roadblock in real time, which can satisfy the requirment of real-time anti-crash of bodywork's.

关 键 词：超声波 测距 实时性 PIC16F876单片机 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]