电子测试
電子測試
전자측시
ELECTRONIC TEST
2013年
9期
85-86
,共2页
ARM9%滤波%激光测距%差频测相
ARM9%濾波%激光測距%差頻測相
ARM9%려파%격광측거%차빈측상
ARM9%filter%laser ranging%differential frequency of phase measuring
本文介绍一种基于 ARM9的激光测距系统的硬件原理设计和软件设计方案.以 ARM9处理器为控制核心,采用相位法激光测距技术,首先用正弦信号调制半导体激光器的发射激光,然后将被测物反射的激光用光电探测器转换为电信号,采用相位测量技术测量出发射信号与接收信号的相位差,从而计算出与被测物的距离.最后使用实时操作系统μC/OS-II作为系统控制核心,以确保测量精度.
本文介紹一種基于 ARM9的激光測距繫統的硬件原理設計和軟件設計方案.以 ARM9處理器為控製覈心,採用相位法激光測距技術,首先用正絃信號調製半導體激光器的髮射激光,然後將被測物反射的激光用光電探測器轉換為電信號,採用相位測量技術測量齣髮射信號與接收信號的相位差,從而計算齣與被測物的距離.最後使用實時操作繫統μC/OS-II作為繫統控製覈心,以確保測量精度.
본문개소일충기우 ARM9적격광측거계통적경건원리설계화연건설계방안.이 ARM9처리기위공제핵심,채용상위법격광측거기술,수선용정현신호조제반도체격광기적발사격광,연후장피측물반사적격광용광전탐측기전환위전신호,채용상위측량기술측량출발사신호여접수신호적상위차,종이계산출여피측물적거리.최후사용실시조작계통μC/OS-II작위계통공제핵심,이학보측량정도.
This paper introduces the design of circuit principle and software design of laser distance measurement system which is based on ARM9. Based on ARM9 processor,this system using the phase method to complete. Firstly,the transmission laser is modulated by a sinusoidal signal. Then convert the reflected laser to electrical signals with a photoelectric detector. And we measure the phase of the transmitted signal and the received signal with phase measurements techniques,to calculate the distance with the phase. Finally,how to configure the software control core of μC/OS-II real-time operating system to guarantee the measurement precision is shown.
