Design of a new type of hand-hold immersion laser turbidimeter

LIU Sheng 1; GAO Hong-wen 3; HUANG Chao-qun 1; CHU Yan-nan 1

doi:10.13873/j.1000-97872012.07.002

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Design of a new type of hand-hold immersion laser turbidimeter

更新时间：2025-09-11

- Design of a new type of hand-hold immersion laser turbidimeter
- Vol. 31, Issue 7, Pages: 114-116(2012)
- 作者机构：
  
  1. 中国科学院安徽光学精密机械研究所环境光谱学研究室
  2. 淮北师范大学计算机科学与技术学院
  3. 同济大学环境科学与工程学院污染控制与资源化研究国家重点实验室
- 作者简介：
- 基金信息：
- DOI：10.13873/j.1000-97872012.07.002
  CLC： TN24
- Published：2012
- 稿件说明：
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[1]刘升,郜洪文,黄超群,储焰南.一种手持浸入式新型激光浊度计设计[J].传感器与微系统,2012,31(07):114-116.

LIU Sheng 1, GAO Hong-wen 3, HUANG Chao-qun 1, et al. Design of a new type of hand-hold immersion laser turbidimeter[J]. 2012, 31(7): 114-116.
[1]刘升,郜洪文,黄超群,储焰南.一种手持浸入式新型激光浊度计设计[J].传感器与微系统,2012,31(07):114-116. DOI： 10.13873/j.1000-97872012.07.002.

LIU Sheng 1, GAO Hong-wen 3, HUANG Chao-qun 1, et al. Design of a new type of hand-hold immersion laser turbidimeter[J]. 2012, 31(7): 114-116. DOI： 10.13873/j.1000-97872012.07.002.

摘要

浊度是水质的一项重要指标。为了快速、准确地测量浊度

设计了一种手持浸入式便携浊度计。浊度计基于透射光法

发光源使用带光电二极管（PD）的850 nm小功率激光管

激光管在发射电路地控制下产生1 kHz的调制光束

内置PD用于保持发光强度的恒定。光接收电路使用PD BPW82接收透过试样的光束

采用直流恢复电路消除低频背景光干扰

通过精密整流电路和滤波电路从调制信号中取出表示浊度的电压信号。软件上利用微处理器的运算能力简化了电路设计

省去了对数放大器。给出了标定算法和浮点数存储方法。

Abstract

Turbidity is an important index of water quality.In order to rapidly and accurately measure turbidity of water

a new type of hand-hold immersion laser turbidimeter is designed.The method of measuring turbidity is based on transmitted light mode.The 850nm low power laser-diode with photo diode（PD） is used as light source. The laser-diode generates modulated beams at 1 kHz controlled by transmitting circuit.The light intensity is kept constant by the PD BPW82 photodiode receives the light beam transmitting from the samples.The DC restoration circuit is used to eliminate inteference of low-frequency background light.Turbidity signal is obtained through precise rectification circuit and filtering circuit from the modulating signal.The design of circuit is simplified and logarithmic amplifier is left out due to the operation ability of microprocessor.Calibration algorithm and storing methods of floating point number is given.

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references

电极法智能氨氮测量仪器设计 [J]. 刘升,郜洪文. 计算机与应用化学 . 2010(05)

新型柱积分在线智能浊度仪的研究与性能测试 [J]. 张锂,韩国才. 仪器仪表学报 . 2006(08)

浮点数在E 2 PROM中存取方法的研究 [J]. 毕文伟. 计量与测试技术 . 2005(02)

污水处理在线监测仪器原理及应用[M]. 化学工业出版社 , 施汉昌, 2008

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