CN2663979Y - An online turbidity detecting instrument - Google Patents

An online turbidity detecting instrument Download PDF

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Publication number
CN2663979Y
CN2663979Y CN 200320115970 CN200320115970U CN2663979Y CN 2663979 Y CN2663979 Y CN 2663979Y CN 200320115970 CN200320115970 CN 200320115970 CN 200320115970 U CN200320115970 U CN 200320115970U CN 2663979 Y CN2663979 Y CN 2663979Y
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CN
China
Prior art keywords
optical fiber
light source
water body
chip microcomputer
homochromy
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Expired - Fee Related
Application number
CN 200320115970
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Chinese (zh)
Inventor
陈光东
段三丁
陆晓华
杨海
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Huazhong University of Science and Technology
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Huazhong University of Science and Technology
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Priority to CN 200320115970 priority Critical patent/CN2663979Y/en
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Publication of CN2663979Y publication Critical patent/CN2663979Y/en
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Abstract

The utility model provides an online turbidity detecting instrument, which comprises an optical fiber detecting head and a turbidity degree instrument core consisting of a singlechip system and an opto-electrical detecting part, wherein, the opto-electrical detecting part comprises a light source voltage regulation control circuit, a homochromy light source, an opto-electrical sensor and an A/D converter. The homochromy light source can generate homochromy light under the control of the light source voltage regulation control circuit, furthermore, the homochromy light is transmitted to the optical fiber detecting head. The homochromy beam shoots from the incidence end of the optical fiber, reaches a glisten mirror through the detected water body, enters the refection end of the optical fiber through the detected water body after reflected and is transmitted to the opto-electrical sensor in the core through the optical fiber. The light intensity value is converted to voltage value and transmitted into digital signal into the singlechip system for data processing by the A/D converter. The detecting instrument has the advantages of smaller volume, flexible installation and mechanism, feasible technical performance index, good market prospect and better economical benefits.

Description

A kind of online turbidity detector
Technical field
The utility model belongs to water quality inspection technique, is specifically related to a kind of online turbidity detector.This detector is measured the water body turbidity, differentiating the contaminated degree of waste discharge, or in industrial processes as the index of water quality monitoring.This detector all has a wide range of applications in industries such as environmental protection, chemical industry, food and weavings.
Background technology
Online turbidity detector is exactly to be used for the detecting instrument of continuous on-line determination water turbidity.The online turbidimeter of producing both at home and abroad adopts the photometry principle to measure mostly at present.The monochromatic source and a photoelectric sensor (as Fig. 1) of a fixed wave length normally are installed in water body to be measured, when the monochromatic light that monochromatic source is sent passes solution to be measured, because the influence of water body turbidity, can partly be absorbed with scattering, the turbidity that finally arrives the monochromatic light ray intensity of detecting device and tested water body be linear.Photoelectric sensor converts light intensity to electric signal, and calculates the turbidity of detected solution.
Mostly domestic and international online turbidimeter is to adopt the throw-in type detection head at present, and promptly illuminating source and detecting device are independently to be installed in outside the main frame, as the products such as 720D of U.S. HACH company.The technical method of above-mentioned METHOD FOR CONTINUOUS DETERMINATION turbidity exists two problems: one, photoelectric device and lead long period of soaking problems such as burn into insulation is bad occur easily in water; Its two, the installation of light source and photoelectric sensor is complicated, is not easy to dismantle and remove the dirt that deposits on the components and parts, influences the accuracy of measurement result.
Summary of the invention
The purpose of this utility model is to provide a kind of online turbidity detector.This detector is not perishable, good insulating, and be easy to install and clean.
A kind of online turbidity detector that the utility model provides comprises optical fiber detection head and the turbidimeter main frame of being made up of Single Chip Microcomputer (SCM) system and photoelectric detection part, and Single Chip Microcomputer (SCM) system comprises single-chip microcomputer and auxiliary circuit thereof, and input media and display device; Photoelectric detection part comprises light source constant-pressure control, monochromatic source, photoelectric sensor and A/D converter; Monochromatic source is under the control of light source constant-pressure control, produce monochromatic light, through Optical Fiber Transmission to the optical fiber detection head, homogeneous beam goes out from the optical fiber input end-fire, see through water body to be measured and arrive reflective mirror, enter the fiber reflection end through water body to be measured again after the reflection, through the photoelectric sensor of Optical Fiber Transmission in the main frame, convert light intensity value to magnitude of voltage, send A/D converter again to and convert digital signal to and input to and carry out data processing in the Single Chip Microcomputer (SCM) system.
The utility model all is placed in illuminating source and photoelectric sensor among the apparatus subject, and the monochromatic light that light source is sent with optical fiber is sent among the water body to be measured, after the reflective mirror reflection, projects on the photoelectric sensor in the instrument by another optical fiber again.The advantage of this technical scheme is: do not have electron device and lead to work in water, thereby do not have problems such as insulation and corrosion, also be convenient to clean probe simultaneously.
Description of drawings
Fig. 1 is a conventional online turbidity detector synoptic diagram;
Fig. 2 is the contrast synoptic diagram of the utility model and Fig. 1;
Fig. 3 is the structural representation of the online turbidity detector of the utility model;
Fig. 4 is a control flow synoptic diagram of the present utility model.
Embodiment
As shown in Figure 1, conventional online turbidity detector comprises mainly between host machine part 1, light source 3 and photoelectric sensor 4, three parts and linking to each other by lead 2 that light source 3 and photoelectric sensor 4 are put into water body 5 to be measured.
As shown in Figure 3, online turbidity detector of the present utility model comprises main frame 6 and optical fiber detection head 10.Wherein, the turbidimeter main frame comprises Single Chip Microcomputer (SCM) system and photoelectric detection part.Single Chip Microcomputer (SCM) system comprises single-chip microcomputer 14 and auxiliary circuit 19 thereof, and input media 15 and display device 16.Auxiliary circuit 19 comprises real time clock circuit 20, data-storing circuit 21, system monitoring circuit 22 and serial communication circuit 23.Photoelectric detection part mainly is made of light source constant-pressure control 17, monochromatic source 7, photoelectric sensor 8 and A/D converter 18.Among the present invention, monochromatic source 7 and photoelectric sensor 8 all belong to main frame a part, be positioned among the main frame 6.They link to each other with the optical fiber detection head 10 that is arranged in water body 5 to be measured by optical fiber respectively.Optical fiber detection head 10 is by optical fiber input end 11 and fiber reflection end 12, and the reflective mirror 13 that is positioned on its light path constitutes.Single parts itself in above-mentioned each hardware are prior art.
Monochromatic source 7 is under the control of light source constant-pressure control 17, produce monochromatic light, through Optical Fiber Transmission to optical fiber detection head 10, homogeneous beam penetrates from optical fiber input end 11, after seeing through water body 5 arrival reflective mirrors 13 to be measured, enter fiber reflection end 12 through water body 5 to be measured again, through the photoelectric sensor 8 of Optical Fiber Transmission in the main frame.The monochromatic light light intensity magnitude that arrives photoelectric sensor 8 is relevant with the turbidity of water body 5 to be measured, photoelectric sensor 8 converts detected light intensity value to magnitude of voltage, send A/D converter 18 again to and convert in the digital signal input Single Chip Microcomputer (SCM) system and carry out data processing, and then obtain the turbidity value of required water body to be measured.
The control flow chart of detector as shown in Figure 4.Its program can adopt external most popular C51 single-chip microcomputer language compilation, the existing general C language characteristic of this modularized program design language, the ability that has direct control single-chip microcomputer hardware again, its basic characteristics comprise: travelling speed is fast, compile efficiency is high, have the built-in function and the floating-point operation ability of good transplantability and abundant multiple complex calculation.Whole software can be divided into: data acquisition and processing, DATA REASONING and correction, friendly man-machine dialog interface and comprise Chinese display, clock, monitoring, the multiple operating function module of communicating by letter.Measure portion software flow synoptic diagram is seen Fig. 4.
Example
We are core with Atmel 89C55 single-chip microcomputer, are aided with A/D conversion, system monitoring peripheral circuits such as (MAX813), have built the online turbidimeter model machine of the functions such as control, demonstration and system monitoring of conversion, processing, computing and instrument with signal.In addition, real-time timepiece chip (as DS1302), nonvolatile memory (as 24LC64) and RS-232 serial interface chip also have been equipped with on the instrument, thereby realized functions such as data-storing, temperature survey, PC communication and serial print, convenient for users to use.
Instrument software uses Keil C to write.The existing general C language characteristic of this modularized program design language, the ability that has direct control single-chip microcomputer hardware again, its basic characteristics comprise: travelling speed is fast, compile efficiency is high, have the built-in function and the floating-point operation ability of good portable and abundant multiple complex calculation.Light path part adopts high brightness monochrome photodiode (wavelength 640nm) as monochromatic source, with the TSL235 light-to-frequency converter of TI company as photoelectric sensor, use GXT-2 fiber type light guide bundles, after forming processes, realized the real-time online of water body turbidity is detected.

Claims (1)

1, a kind of online turbidity detector, it is characterized in that: this detector comprises optical fiber detection head (10) and the turbidimeter main frame of being made up of Single Chip Microcomputer (SCM) system and photoelectric detection part (6), Single Chip Microcomputer (SCM) system comprises single-chip microcomputer (14) and auxiliary circuit (19) thereof, and input media (15) and display device (16); Photoelectric detection part comprises light source constant-pressure control (17), monochromatic source (7), photoelectric sensor (8) and A/D converter (18); Monochromatic source (7) is under the control of light source constant-pressure control (17), produce monochromatic light, through Optical Fiber Transmission to optical fiber detection head (10), homogeneous beam penetrates from optical fiber input end (11), see through water body to be measured (5) and arrive reflective mirror (13), enter fiber reflection end (12) through water body to be measured (5) again after the reflection, through the photoelectric sensor (8) of Optical Fiber Transmission in the main frame, convert light intensity value to magnitude of voltage, send A/D converter (18) again to and convert digital signal to and input to and carry out data processing in the Single Chip Microcomputer (SCM) system.
CN 200320115970 2003-11-20 2003-11-20 An online turbidity detecting instrument Expired - Fee Related CN2663979Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200320115970 CN2663979Y (en) 2003-11-20 2003-11-20 An online turbidity detecting instrument

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Application Number Priority Date Filing Date Title
CN 200320115970 CN2663979Y (en) 2003-11-20 2003-11-20 An online turbidity detecting instrument

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CN2663979Y true CN2663979Y (en) 2004-12-15

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101078717B (en) * 2007-06-20 2010-08-25 中国矿业大学 Coal slurry water turbidity determination method
CN102667415A (en) * 2009-10-26 2012-09-12 波音公司 Optical sensor interrogation system
CN102914519A (en) * 2012-10-19 2013-02-06 中国科学院合肥物质科学研究院 Optical fiber type laser liquid turbidity measuring device and measuring method
CN103398980A (en) * 2013-08-14 2013-11-20 中山欧麦克仪器设备有限公司 Ultraviolet light turbidity detection instrument
CN103645161A (en) * 2013-11-16 2014-03-19 中山欧麦克仪器设备有限公司 Turbidity detecting device
CN104568845A (en) * 2015-01-10 2015-04-29 浙江大学 Underwater all-angle turbidity measurement equipment and method
CN107532993A (en) * 2015-02-10 2018-01-02 圣安德鲁斯大学董事会 Use the systems, devices and methods of integrating sphere light collector

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101078717B (en) * 2007-06-20 2010-08-25 中国矿业大学 Coal slurry water turbidity determination method
CN102667415A (en) * 2009-10-26 2012-09-12 波音公司 Optical sensor interrogation system
US9459513B2 (en) 2009-10-26 2016-10-04 The Boeing Company Methods and optical interrogation system for monitoring structural health of a structure
US9482927B2 (en) 2009-10-26 2016-11-01 The Boeing Company Optical sensor interrogation system
US9772539B2 (en) 2009-10-26 2017-09-26 The Boeing Company Optical sensor and method of manufacture
CN102914519A (en) * 2012-10-19 2013-02-06 中国科学院合肥物质科学研究院 Optical fiber type laser liquid turbidity measuring device and measuring method
CN102914519B (en) * 2012-10-19 2015-04-15 中国科学院合肥物质科学研究院 Optical fiber type laser liquid turbidity measuring device and measuring method
CN103398980A (en) * 2013-08-14 2013-11-20 中山欧麦克仪器设备有限公司 Ultraviolet light turbidity detection instrument
CN103645161A (en) * 2013-11-16 2014-03-19 中山欧麦克仪器设备有限公司 Turbidity detecting device
CN104568845A (en) * 2015-01-10 2015-04-29 浙江大学 Underwater all-angle turbidity measurement equipment and method
CN104568845B (en) * 2015-01-10 2017-02-22 浙江大学 Underwater all-angle turbidity measurement equipment and method
CN107532993A (en) * 2015-02-10 2018-01-02 圣安德鲁斯大学董事会 Use the systems, devices and methods of integrating sphere light collector

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