基于CPLD和单片机的激光测距时间间隔测量

详细信息

Time interval measurement of laser ranging based on CPLD & microchip

School of Instrument Science & Opto-electronics Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

摘要: 为了达到提高时间间隔测量精度的目的,采用复杂可编程逻辑器件和单片机实现脉冲激光测距时间间隔测量系统中的模拟内插法的方案,设计了测量系统与测试电路,并对该方案进行了验证,得到了200ps精度的时间间隔测量系统.结果表明,可编程逻辑器件的使用可大大简化电路结构,使得整个系统结构简单化.采用该设计方案的激光测距系统具有体积小、可靠性高的特点.
- 测量与计量 /
- 可编程逻辑器件 /
- 单片机 /
- 激光测距 /
- 时间间隔测量 /
- 模拟内插法
Abstract: In order to improve the precision of time interval measurement in pulsed laser ranging,several interpolation methods are used.Analog interpolation time-interval measurement has advantages of high precision,small blind area,long measurement range and good linearity.Ananalog interpolation measurement method using complex programmable logic device(CPLD) and microchip was presented.Benefiting from the use of CPLD,the circuit became simplified.Furthermore,the time-interval measurement system adapted extraordinarily to high performance portable pulsed laser rangefinder for its compactness,simple structure and high reliability.
- measurement and metrology /
- complex programmable logic device /
- microchip /
- laser ranging /
- time interval measure /
- analog interpolation method

[1]	ZHANG L,QIN S Q,WANG S S,et al.Mini LD laser rangefinder used in intelligent vehicles[J].Laser Technology,2005,25(2):130-131(in Chinese).
[2]	YANG C W,CHEN Q S,LIN Y,et al.Measurement on time-interval in pulsed laser ranging and error analysis[J].Infrared and Laser Engineering,2003,32(2):123-126(in Chinese).
[3]	HONG Y J,CHEN Q S,PAN Z W.Review on time-of-flight measurement of pulsed laser radar[J].Laser and Infrared,2001,31(3):136-139(in Chinese).
[4]	LIU C J,YANG H J,LAI F.Technology of the rendezvous radar measuring the object's position[J].Laser Technology,2006,30(6):608-610(in Chinese).
[5]	XIE X S,FANG Y W,WU Y F,et al.Infrared laser ranging in auto adaptive cruise control system[J].Laser Technology,2004,28(5):521-523(in Chinese).
[6]	LI L,WANG Z Z,SHEN Y.Discussion on the signal processing ofhigh precision laser range finder[J].Laser and Infrared,2005,35(6):441-443(in Chinese).
[7]	LU Z M.Use of time interval measure system for laser ranging and the error analysis[J].Infrared and Laser Engineering,2001,20(3):37-39(in Chinese).
[8]	YANG C W,HUO Y J,HE S F,et al.The measurement of flight time for pulsed laser ranging based on CPLD[J].Laser and Infrared,2004,34(2):106-108(in Chinese).
[9]	Analog Devices Inc.High speed 8-Bit TTL A/D converter AD9012[DB/CD].Norwood,USA:Analog Devices Inc,1998-01-05.
[10]	SUN Y C,WANG R X,SUN H F.The new ATMEL's AT89S52 and its applications[M].Beijing:Tsinghua University Press,2004:31-46(in Chinese).