Optimization of Shaping Circuit and Low-pass Filter in Laser Ranging System

YOU Zheng1; 2; YANG Ran1; ZHANG Gao-fei1; XUE Xu-feng1; YE Liang-chen1

doi:10.3788/OPE.20132110.2527

您当前的位置：

首页 >

文章列表页 >

Optimization of Shaping Circuit and Low-pass Filter in Laser Ranging System

更新时间：2020-08-12

- Optimization of Shaping Circuit and Low-pass Filter in Laser Ranging System
- Optics and Precision Engineering Vol. 21, Issue 10, Pages: 2527-2534(2013)
- 作者机构：
  
  1. 清华大学精密仪器系
  2. 清华大学精密测试技术及仪器国家重点实验室
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20132110.2527
  CLC： TP247;TN713
- Received：10 April 2013，
  
  Revised：13 May 2013，
  
  Published Online：19 October 2012，
  
  Published：15 October 2013
- 稿件说明：
移动端阅览
尤政杨冉张高飞薛旭峰叶良琛. 激光测距系统整形模块和低通滤波模块优化设计[J]. 光学精密工程, 2013,21(10): 2527-2534

YOU Zheng YANG Ran ZHANG Gao-fei XUE Xu-feng YE Liang-chen. Optimization of Shaping Circuit and Low-pass Filter in Laser Ranging System[J]. Editorial Office of Optics and Precision Engineering, 2013,21(10): 2527-2534
尤政杨冉张高飞薛旭峰叶良琛. 激光测距系统整形模块和低通滤波模块优化设计[J]. 光学精密工程, 2013,21(10): 2527-2534 DOI： 10.3788/OPE.20132110.2527.

YOU Zheng YANG Ran ZHANG Gao-fei XUE Xu-feng YE Liang-chen. Optimization of Shaping Circuit and Low-pass Filter in Laser Ranging System[J]. Editorial Office of Optics and Precision Engineering, 2013,21(10): 2527-2534 DOI： 10.3788/OPE.20132110.2527.

摘要

由于减小相位式激光测距系统的鉴相误差可提高测距精度，本文对鉴相器前置整形模块和后置滤波模块进行了优化设计，以提高鉴相精度。针对整形模块，引入了迟滞比较器，克服了传统开环比较电路在实际噪声条件下存在的多重触发缺陷，解决了鉴相器输出方波高电平宽度不稳定的问题。针对滤波模块，介绍了基于MC4044鉴相芯片的两种典型放大/滤波电路及其缺陷，使用FilterPro软件设计了4阶有源低通滤波器，并说明了它相对于典型设计的优势。实验结果表明：相比于开环比较器，本文设计的迟滞比较器避免了接地（GND）噪声引起的多重跳变现象，输出方波的上升沿时间由1.66 s下降为108 ns；与基于MC4044的两种典型放大/滤波模块设计相比，本文设计的低通滤波电路克服了输出DC电平值非线性变化的缺陷线性度（R2）值由0.908 3提高至0.999 9）和灵敏度较低的缺陷（转化增益常量提高了96.5%），而输出DC电平上的干扰信号峰峰值则由50~230 mV下降至10~20 mV，有效减少了后级的A/D采样误差，提高了鉴相精度。

Abstract

As the phase discrimination error of a phase laser ranging system effects its ranging accuracy

this paper optimizes the designs of a preceding stage (shaping circuit) and a subsequent stage (low-pass filter) in the phase detector. For the shaping circuit

a comparator with hysteresis was designed to avoid the multiple-triggered phenomenon caused by the noise on GND for open loop filters

and stabilizes the output of phase detector. For the low-pass filter

two typical amplifier/filter circuits based on MC4044 and their defects were introduced

a 4th-order low-pass filter was designed by using FilterPro

and its advantages were presented. Experimental results indicate that the multiple-triggered phenomenon is eliminated by using the hysteresis comparator designed

and the rise-time of output square wave falls to 108 ns from 1.66 s as compared with that of a traditional opened-loop comparator. Furthermore

the 4th-order filter designed in this paper improves the linearity and sensitivity of the DC output

the linearity(R2) increases from 0.908 3 to 0.999 9

and the convention gain improves by 96.5% as compared with that of the typical designs of amplifier/filter circuits. Moreover

the peak-to-peak value of the interference signal on a Low Pass Filter(LPF) DC output decreases from 50-230 mV to 10-20 mV

which reduces the phase detection error effectively.

关键词

Keywords

references

刘秉琦,周斌,武东生,等. 双通道激光主动探测系统[J]. 光学精密工程,2012,20(2): 241-246.LIU B Q, ZHOU B, WU D SH, et al.. Dual-channel active laser detection system [J]. Opt. Precision Eng., 2012, 20(2):241-246. (in Chinese)[2]张雏,周冰,沈学举,等. 精确校正激光测距仪三光轴平行的理论计算方法研究[J]. 光学精密工程,2002,10(6):650-654.ZHANG CH, ZHOU B, SHEN X J, et al.. Study of the calculation method for accurately adjusting laser range finders three optic axes to parallel to each other [J]. Opt. Precision Eng., 2002, 10(6): 650-654. (in Chinese)[3]贾方秀,丁振良,袁锋. 相位法激光测距接收系统[J]. 光学精密工程,2009,17(10): 2377-2384.JIA F X, DING ZH L, YUAN F. Phase-shift laser range finder receiver system [J]. Opt. Precision Eng., 2009, 17(10): 2377-2384. (in Chinese)[4]王选钢,缑宁祎,张珂殊. 相位式激光测距谱分析鉴相的无偏改进[J]. 光学精密工程,2012,20(4): 888-895.WANG X G, GOU N Y, ZHANG K SH. Unbiased improvement of spectrum analysis phase discrimination for phase-shift laser range finder [J]. Opt. Precision Eng., 2012, 20(4): 888-895. (in Chinese)[5]李烨,董秀珍,刘锐岗,等. 生物磁感应成像中的高精度鉴相方法研究[J]. 北京生物医学工程,2006,25(4): 351-354.LI Y, DONG X ZH, LIU R G, et al.. The study of high resolution phase detecting method in biological magnetic induction imaging [J]. Beijing Biomedical Engineering, 2006, 25(4): 351-354. (in Chinese)[6]胡宗恺,饶志宏. 高精度数字鉴相技术的FPGA实现[J]. 通信技术,2010,12(43): 177-179.LIU Z K, RAO ZH H. FPGA realization of high precise digital phase discrimination technology [J]. Communications Technology, 2010, 12(43):177-179. (in Chinese)[7]唐姗姗. 用于地震检波的高精度A/D转换器设计[D]. 济南:山东大学,2010.TANG SH SH. Design of high-resolution A/D converter in seismometer [D]. Jinan: Shandong University, 2010. (in Chinese)[8]刘黎辉,吴志海,汪道辉,等. 高速迟滞比较电路研究及实验[J]. 电子测量技术,2007,30(2): 46-49.LIU L H, WU ZH H, WANG D H, et al.. Research and experiment of high-speed comparing circuit with hysteresis [J]. Electronic Measurement Technology, 2007, 30(2): 46-49. (in Chinese)[9]尤政. 光外差干涉相位检测技术[J]. 计量技术,1995,5:2-4.YOU ZH. Phase detection using heterodyne interference technology [J]. Measurement Technology, 1995, 5:2-4. (in Chinese)[10]刘振余,宋鸿霞,夏仲英. MC4044数字鉴相器的分析及应用[J]. 无线电通信技术,1982,4: 20-29.LIU ZH Y, SONG H X, XIA ZH Y. Analysis and application of MC4044 digital phase detector [J]. Radio Communication Technology, 1982, 4: 20-29. (in Chinese)[11]SUN G F, GU Q T, LIU X B. Principle and implementation of an MC4044-based phase locked loop for constant speed control [J]. Tsinghua Science and Technology, 2000, 5(4): 409-413.[12]赵洪志,赵洋,王佳,等. 一种宽量程光外差干涉信号的处理方法[J]. 光学精密工程,1996,4(4): 130-133.ZHAO H ZH, ZHAO Y, WANG J, et al.. A wide-range processing method for optical heterodyne interference signal [J]. Opt. Precision Eng., 1996, 4(4):130-133. (in Chinese)

Views

676

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

No data

Related Author

No data

Related Institution

No data

AI问答

Address：No.3888 Dong Nanhu Road, Changchun, Jilin, China Postal code：130033
Tel：0431-86176855 Email：gxjmgc@ciomp.ac.cn
Technical support is provided by Beijing Founder electronics co., LTD 吉ICP备11002662号-17 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰