CN103645159A - High-precision sea in-situ turbidity monitor - Google Patents
High-precision sea in-situ turbidity monitor Download PDFInfo
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- CN103645159A CN103645159A CN201310563156.6A CN201310563156A CN103645159A CN 103645159 A CN103645159 A CN 103645159A CN 201310563156 A CN201310563156 A CN 201310563156A CN 103645159 A CN103645159 A CN 103645159A
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Abstract
The invention discloses a high-precision sea in-situ turbidity monitor, which adopts a housing made of sea water corrosion-resistant materials, adopts a modulation-demodulation weak current signal amplification system, and adopts low-power system circuit design; the monitor can operate for more than 3 months with one battery, has two operating modes of data real time transmission and underwater self-storage, has a maximum operating water depth of 3000 m, can realize boat-carrying vertical profile investigation and horizontal dragging determination of turbidity of various water bodies such as sea, deep lakes, and the like, and can be integrated with third-party platforms for long-term in-situ monitoring, such as a multiparameter system, sea buoys/subsurface buoys, a seabed observational network, and the like.
Description
Technical field
The present invention relates to marine environment in-situ monitoring field, be specifically related to a kind of high precision ocean original position monitoring turbidimeter.
Background technology
Turbidity represents the muddy degree of water, and the turbidity of water hinders light by particle suspension materials such as silt, clay, algae and other microorganisms, insoluble inorganics and organism to be caused through water layer, and the part light by water body can be absorbed and scattering.The turbidity of water is higher, and reflected light and scattered light are just stronger, and transmitted light is just more weak; Otherwise the turbidity of water is lower, reflected light and scattered light are just more weak, and transmitted light is just stronger.Therefore, measure scattered light and transmitted intensity and change, just can record the turbidity of water.
Laboratory is used optical instrument to measure turbidity more at present.Optics turbidimetric apparatus mainly divides three types by principle: light transmission-type, light scattering type and transmission/scattering ratio type (integrating sphere turbidity), wherein light scattering type stable performance, is most widely used.By measuring 90 degree position scattered light intensities, determine sample turbidity value.International act.std ISO7027 (90 ° ± 2.5 ° scattered lights) and USEPA180.1 (90 ° ± 30 ° scattered lights) all adopt this kind of method.
The outer manufacturer of Present Domestic has developed that the laboratory of Multiple Type is desk-top, field portable hand-held and industry spot on-line monitoring turbidimeter, is widely used in the fields such as laboratory detection, drinking water treatment, industrial process and production, boiler feed water, wastewater treatment, environment monitoring.Yet prior art mostly is indoor or shallow water and uses, operating depth general tens meters to rice up to a hundred, and need external power source or flying power limited.Be difficult to meet marine monitoring to higher withstand voltage, the corrosive power of resistance to high salinity of sensor and degree of precision requirement, and there are the problems such as the power supply of continuous monitoring instrument, original position data acquisition in marine investigation.
Summary of the invention
For addressing the deficiencies of the prior art, the invention provides a kind of high precision ocean original position monitoring turbidimeter, adopt seawater corrosion resistance material shell, modulation /demodulation small current amplify system and low power dissipation design, one batteries work is more than 3 months, have portable from storage and real-time Transmission function, can realize the boat-carrying vertical section investigation of the various water bodies turbidity such as ocean, Deep lake and level towing is measured, and can be integrated into the third-party platforms such as multiparameter system, oceanographic buoy/subsurface buoy, submarine observation network and carry out long-term in-situ monitoring.
For addressing the above problem, the present invention adopts following technical scheme: a kind of high precision ocean original position monitoring turbidimeter, it is characterized in that, and comprise following part:
(1) infrared excitation light source, described infrared excitation light source irradiates water sample with 45° angle, luminous by pulse current drive cycle;
(2) optical receiving system, described optical receiving system forms by receiving baffle plate, infrared fileter and photoelectric sensor, is 90 ° of angles, for receiving incident scattered light with excitation source;
(3) power management module, described power management module for whole system power management, is realized pulse excitation light source and is driven, and provides power supply for the realization of instrument signal collection, conversion, conditioning, storage, communication function;
(4) analog module, described analog module adopts exciting light modulation and switching detection synchronous demodulation weak current amplification system, realize slight photo-electric signal collection and conditioning, comprise current/voltage-converted, bandpass filtering, interchange amplification, switch filtering and low-pass filtering;
(5) digital circuit blocks, described digital circuit blocks adopts low-power consumption microprocessor and external circuit optimal design, realizes simulating signal to the conversion of digital signal, data storage and Communication Control;
(6) high-pressure-resistant sealed cabin, described high-pressure-resistant sealed cabin is used POM engineering plastics to be processed into, and bottom connects six core underwater electrical connectors and carries out communication, and the withstand voltage 30MPa that is designed to, can bear 0-3000m water depth pressure.
Further, described infrared excitation light source is direct insertion globe-type luminescence diode (Light Emitting Diode, LED), peak wavelength 850nm-880nm, half-intensity beam angle θ
1/2=6 °, light radiation intensity 80mW/sr.
Further, described excitation source and optical receiving system adopt the embedding of optical clear epoxide-resin glue.
Further, perforate in the middle of the receipts baffle plate of described exciting light source(-)holder and optical receiving system, for controlling by light intensity magnitude, can select suitable perforate size, changes sensing range and the sensitivity of instrument.
Further, system has normal mode of operation and low-power consumption park mode two states, can reduce interruption work power consumption.
Further, inside has original position data storage function, can carry out real-time data transmission and underwater self-containing formula storage work by stube cable.
Further, 400,000 groups of above data can be stored in inside.
The invention has the beneficial effects as follows: adopt seawater corrosion resistance material shell and low power dissipation design, one batteries work is more than 3 months, accuracy of detection is high, have portable from storage and real-time Transmission function, can realize the boat-carrying vertical section investigation of the various water bodies turbidity such as ocean, Deep lake and level towing is measured, and can be integrated into the third-party platforms such as multiparameter system, oceanographic buoy/subsurface buoy, submarine observation network and carry out long-term in-situ monitoring.
Accompanying drawing explanation
Fig. 1 is physical construction diagrammatic cross-section of the present invention;
Fig. 2 is apparent size schematic diagram of the present invention;
Fig. 3 is Calibration curve of the present invention.
In Fig. 1-3,1. end cap, 2. high-pressure-resistant sealed cabin, 3. underwater electrical connector, 4. photoelectric sensor, 5. infrared fileter, 6. receives baffle plate, 7. luminous base, 8. infrared LED light source, 9. analog module, 10. digital circuit blocks, 11. power management modules, 12. bottoms, 13. optical detection sensitizing ranges.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
A kind of high precision ocean original position monitoring turbidimeter as shown in Figure 1 and Figure 2, one-piece construction is cylindrical, long 114mm, external diameter 64mm, top is end cap 1 (comprising excitation source and detection window), centre is that high-pressure-resistant sealed cabin 2, bottom 12 are connected with high-pressure-resistant sealed cabin 2 by 316 bolts, and bottom six core underwater electrical connectors 3 are for electric communication.
Detection window is positioned at instrument top, as shown in Figure 1, two mutual circular hole slots are at an angle of 90 arranged at end cap 1 top, difference installation infrared excitation source and optical receiving system, described optical receiving system is comprised of photoelectric sensor 4, infrared fileter 5 and receipts baffle plate 6, and described infrared LED light source 8 is fixing by luminous base 7,2 fairleads are arranged at end cap 1 bottom, and photoelectric sensor 4 is connected with enclosure interior circuit board by two core shielded conductors respectively with infrared LED light source 8.Infrared LED light source 8 produces light after scattering, enters optical receiving system, and through receiving, baffle plate 6 diaphragms are controlled and infrared fileter 5 selectivity see through, and finally by photoelectric sensor 4, are received, and realize photosignal conversion.Optical sensor district 13 is for receiving the detection sensitizing range of incident scattered light, change the perforate size of receiving baffle plate 6 and luminous base 7, can change exciting light and effective scattered light intensity, the size of optical detection sensitizing range 13 changes thereupon, can affect to a certain extent sensing range and the sensitivity of instrument.
Described high-pressure-resistant sealed cabin 2 is used POM engineering plastics to be processed into, and use deep-sea, bottom is connected to power management module 11 with underwater electrical connector 3, carries out externally fed, and is connected and obtains real time data with PC or data acquisition system (DAS) with RS-232 communication modes; Or carry out utonomous working by underwater electrical connector 3 connection underwater batteries, data are stored in inner FLASH chip.
Sensor is output as A/D signal value, need calibrate, by signal value and sample turbidity opening relationships.As shown in Figure 3, linear measurement range of the present invention is 0.01-200NTU after testing, R
2>=0.999.
Obviously, do not departing under the prerequisite of true spirit of the present invention and scope, the present invention described here can have many variations.Therefore, all changes that it will be apparent to those skilled in the art that, within all should being included in the scope that these claims contain.The present invention's scope required for protection is only limited by described claims.
Claims (7)
1. a high precision ocean original position monitoring turbidimeter, is characterized in that, comprises following part:
(1) infrared excitation light source, described infrared excitation light source irradiates water sample with 45° angle, luminous by pulse current drive cycle;
(2) optical receiving system, described optical receiving system forms by receiving baffle plate, infrared fileter and photoelectric sensor, is 90 ° of angles, for receiving incident scattered light with excitation source;
(3) power management module, described power management module for whole system power management, is realized pulse excitation light source and is driven, and provides power supply for the realization of instrument signal collection, conversion, conditioning, storage, communication function;
(4) analog module, described analog module adopts exciting light modulation and switching detection synchronous demodulation weak current amplification system, realize slight photo-electric signal collection and conditioning, comprise current/voltage-converted, bandpass filtering, interchange amplification, switch filtering and low-pass filtering;
(5) digital circuit blocks, described digital circuit blocks adopts low-power consumption microprocessor and external circuit optimal design, realizes simulating signal to the conversion of digital signal, data storage and Communication Control;
(6) high-pressure-resistant sealed cabin, described high-pressure-resistant sealed cabin is used POM engineering plastics to be processed into, and bottom connects six core underwater electrical connectors and carries out communication, and the withstand voltage 30MPa that is designed to, can bear 0-3000m water depth pressure.
2. a kind of high precision according to claim 1 ocean original position monitoring turbidimeter, it is characterized in that: described infrared excitation light source is direct insertion globe-type luminescence diode (Light Emitting Diode, LED), peak wavelength 850nm-880nm, half-intensity beam angle θ
1/2=6 °, light radiation intensity 80mW/sr.
3. a kind of high precision according to claim 1 ocean original position monitoring turbidimeter, is characterized in that: described excitation source and optical receiving system adopt the embedding of optical clear epoxide-resin glue.
4. a kind of high precision according to claim 1 ocean original position monitoring turbidimeter, it is characterized in that: perforate in the middle of the receipts baffle plate of described exciting light source(-)holder and optical receiving system, for controlling, pass through light intensity magnitude, suitable perforate size be can select, sensing range and the sensitivity of instrument changed.
5. a kind of high precision according to claim 1 ocean original position monitoring turbidimeter, is characterized in that: have normal mode of operation and low-power consumption park mode two states, can reduce interruption work power consumption.
6. a kind of high precision according to claim 1 ocean original position monitoring turbidimeter, is characterized in that: inside has original position data storage function, can carry out real-time data transmission and underwater self-containing formula storage work by stube cable.
7. a kind of high precision according to claim 1 ocean original position monitoring turbidimeter, is characterized in that: 400,000 groups of above data can be stored in inside.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310563156.6A CN103645159B (en) | 2013-11-12 | 2013-11-12 | A kind of High-precision sea in-situ turbidity monitor |
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| CN201310563156.6A CN103645159B (en) | 2013-11-12 | 2013-11-12 | A kind of High-precision sea in-situ turbidity monitor |
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| CN103645159A true CN103645159A (en) | 2014-03-19 |
| CN103645159B CN103645159B (en) | 2016-07-06 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104251844A (en) * | 2014-09-19 | 2014-12-31 | 中国人民解放军理工大学 | Multi-channel seawater transparency measuring device and method |
| CN106061046A (en) * | 2016-08-15 | 2016-10-26 | 长江勘测规划设计研究有限责任公司 | Underwater illumination lamp based on transmission turbidity measurement principle, and light adjustment method for underwater illumination lamp |
| CN106290515A (en) * | 2016-10-28 | 2017-01-04 | 国家海洋技术中心 | The self calibration ocean multiparameter chemical sensor of micro-fluidic replaceable cavity body structure |
| CN107356542A (en) * | 2017-08-28 | 2017-11-17 | 中国科学院海洋研究所 | A kind of underwater light field and marine environment multi-parameter observation system |
| CN107894381A (en) * | 2017-12-29 | 2018-04-10 | 广州和时通电子科技有限公司 | Husky apparatus and method are surveyed in a kind of southern river |
| CN110576954A (en) * | 2019-08-29 | 2019-12-17 | 自然资源部第二海洋研究所 | A drag formula system for water horizontal and longitudinal section chemical parameter observation |
| CN110726719A (en) * | 2019-10-17 | 2020-01-24 | 广西贺州市桂东电子科技有限责任公司 | Device and method for detecting content of chloride ions in anodic formed foil electrolyte |
| CN116930141A (en) * | 2023-09-13 | 2023-10-24 | 国家海洋技术中心 | CDOM deep sea sensor by ultraviolet fluorescence analysis method |
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| US20030117623A1 (en) * | 2001-12-10 | 2003-06-26 | Apprise Technologies, Inc. | Turbidity sensor |
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-
2013
- 2013-11-12 CN CN201310563156.6A patent/CN103645159B/en not_active Expired - Fee Related
Patent Citations (5)
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| JP2000193592A (en) * | 1998-12-28 | 2000-07-14 | Horiba Ltd | Scattering/transmission ratio type turbidity meter |
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Non-Patent Citations (1)
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104251844A (en) * | 2014-09-19 | 2014-12-31 | 中国人民解放军理工大学 | Multi-channel seawater transparency measuring device and method |
| CN106061046A (en) * | 2016-08-15 | 2016-10-26 | 长江勘测规划设计研究有限责任公司 | Underwater illumination lamp based on transmission turbidity measurement principle, and light adjustment method for underwater illumination lamp |
| CN106061046B (en) * | 2016-08-15 | 2018-02-27 | 长江勘测规划设计研究有限责任公司 | Underwater lighting light fixture and its light-dimming method based on transmission haze measuring principle |
| CN106290515B (en) * | 2016-10-28 | 2019-06-14 | 国家海洋技术中心 | The self calibration ocean multi-parameter chemical sensor of micro-fluidic replaceable cavity body structure |
| CN106290515A (en) * | 2016-10-28 | 2017-01-04 | 国家海洋技术中心 | The self calibration ocean multiparameter chemical sensor of micro-fluidic replaceable cavity body structure |
| CN107356542A (en) * | 2017-08-28 | 2017-11-17 | 中国科学院海洋研究所 | A kind of underwater light field and marine environment multi-parameter observation system |
| CN107356542B (en) * | 2017-08-28 | 2023-08-08 | 中国科学院海洋研究所 | Multi-parameter observation system for underwater light field and marine environment |
| CN107894381A (en) * | 2017-12-29 | 2018-04-10 | 广州和时通电子科技有限公司 | Husky apparatus and method are surveyed in a kind of southern river |
| CN107894381B (en) * | 2017-12-29 | 2024-02-02 | 广州和时通电子科技有限公司 | South is for river Sand measuring device and method |
| CN110576954A (en) * | 2019-08-29 | 2019-12-17 | 自然资源部第二海洋研究所 | A drag formula system for water horizontal and longitudinal section chemical parameter observation |
| CN110576954B (en) * | 2019-08-29 | 2024-04-02 | 自然资源部第二海洋研究所 | Towed system for observing chemical parameters of water transverse and longitudinal sections |
| CN110726719A (en) * | 2019-10-17 | 2020-01-24 | 广西贺州市桂东电子科技有限责任公司 | Device and method for detecting content of chloride ions in anodic formed foil electrolyte |
| CN116930141A (en) * | 2023-09-13 | 2023-10-24 | 国家海洋技术中心 | CDOM deep sea sensor by ultraviolet fluorescence analysis method |
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