CN206920339U - Total organic carbon optics home position sensing - Google Patents
Total organic carbon optics home position sensing Download PDFInfo
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- CN206920339U CN206920339U CN201720337988.XU CN201720337988U CN206920339U CN 206920339 U CN206920339 U CN 206920339U CN 201720337988 U CN201720337988 U CN 201720337988U CN 206920339 U CN206920339 U CN 206920339U
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Abstract
A kind of total organic carbon optics home position sensing, it includes light source module, reference light detection module, sample cell and scattering light detection module, reflected fluorescent light detection module and signal driving and processing module, light source module provides monochromatic ultraviolet light for TOC detections, reference light detecting module realizes the detection to reference light, seawater light and reflected fluorescent light, signal drives provides drive signal with processing module for light source module, and the signal that detecting module obtains is handled；Seawater three-dimensional fluorescence spectrum is obtained by diffraction grating and electron multiplication CCD, and TOC accurate measurement is completed to realizing that sensor carries out self compensation by background optical information and turbidity information.The utility model does not have to addition chemical reagent, is easy to integrate, and high-precision seawater TOC in situ detections can be achieved.
Description
Technical field
A kind of detection means is the utility model is related to, particularly a kind of TOC concentration detection apparatus.
Background technology
Total organic carbon (Total Organic Carbon, TOC) characterizes the summation of contained organic substance in water body, is water body
The important indicator of contaminated with organic substances degree.At present, TOC measurements have been widely applied to rivers, lake and ocean prison
Survey etc., what TOC measurements had become that Water quality in the world controls predominantly detects means.National four ministries and commissions are new within 2003
The charges for disposing pollutants of promulgation are with collecting standard management method, being formally included in TOC water pollutant pollutional equivalent value table.
Seawater TOC detection method mainly includes two categories below at present：The first kind is laboratory classics detection method.Mainly
There are high temperature catalytic combustion oxidation-NDIR detection (NDIR), wet oxidation (persulfate)-NDIR detection etc.,
The subject matter of these methods is method of testing complexity, can cause secondary pollution using chemical reagent, time of measuring is long, speed is slow
Deng, and these methods are only capable of completing in laboratory.Second class is bank base or boat-carrying online test method, mainly there is spectroscopic methodology, electricity
Resistance method, conductance method, Ozonation, ultrasonic cavitation sonoluminescence method etc., but boat-carrying online measuring technique is by the number that goes to sea
Limitation, bank base online measuring technique are only capable of tackling the situation of seashore or estuary.These methods are all difficult to meet that oceanographic survey is complete
Orientation, three-dimensional, continual monitoring needs.
The content of the invention
In view of the above-mentioned problems, the purpose of this utility model is that providing one kind does not have to addition chemical reagent, can survey automatically
The total organic carbon optics sensing in situ that fixed sum data is handled, achievable TOC online in situ detection and measurement accuracy are higher
Device.
The utility model includes light source module, reference light detection module, sample cell and scattering light detection module, reflected fluorescent light
Detection module and signal driving and processing module.Wherein, the light source module includes LED array and linear adjustable filter array,
LED array is light-emitting device, the linear adjustable filter array of LED array output end connection, and linear adjustable filter array is by LED array
The light of output is filtered into adjustable monochromatic ultraviolet light；
Described reference light detection module includes spectroscope and photo-detector one, and spectroscope is located in above-mentioned adjustable monochromatic light
In the light path of source outgoing, spectroscopical minute surface is in 45° angle with light source exit direction, and reflectivity is 10~30%；Spectroscope can
Monochromatic ultraviolet light is adjusted to be divided into the orthogonal light of two beams, a branch of as detection light, a branch of to be used as reference light, photo-detector one is located at
In reference light light path, and it is in 90 ° of angles with light source exit direction, detectable signal compensates for reference background light；
Described sample cell and scattering light detection module includes binary transflector mirror, collimater one, sample cell, collimater two
With photo-detector two, wherein binary transflector mirror is located at after above-mentioned spectroscope, and minute surface and light direction of illumination are in 45° angle,
Collimater one and sample cell are sequentially provided with the reflected light light path of binary transflector mirror side, collimater one is in binary transflector mirror
Position between sample cell is to ensure that adjustable monochromatic ultraviolet light is converged in sample cell；Collimater two and photo-detector two are located at
The outer input path lateral location of sample cell, photo-detector two align with the collimated light path of collimater two, the detection letter of photo-detector two
Number it is used for determining amount；
Described reflected fluorescent light detection module includes collimater three, diffraction grating and electron multiplication CCD, wherein collimater three
It is located at the opposite side of above-mentioned binary transflector mirror with diffraction grating, for collecting the fluorescence being reflected back from sample cell, diffraction grating
Reflected fluorescent light Jing Guo collimater three is launched into the spectrum by wave arrangement, after electron multiplication CCD is located at diffraction grating dispersion
At the spectral position of formation, the optical signal of fluorescence spectrum is transformed into electric signal；
Described reference light detection module, sample cell and the output electricity for scattering light detection module, reflected fluorescent light detection module
Signal by signal wire be connected to signal driving and processing module, signal driving with processing module be using FPGA+DSP as data at
Reason core realizes the functions such as light source driving, each detection module data processing, signal compensation.
The course of work of the present utility model：The linear adjustable filter array output of light that LED array is sent is adjustable monochromatic purple
Outer light, then obtain detection light and reference light through spectroscope；Reference light is used to eliminate bias light interference, and detection light is through binary transflector
Mirror rear steering is radiated in tested seawater into sample cell, produces transmitted light, reflected fluorescent light and scattering light；Reflected fluorescent light is through diffraction
Formed after grating and electric signal is become by electron multiplication CCD by the spectrum of wave arrangement, collect fluorescence caused by different excitation wavelengths
Three-dimensional fluorescence spectrum can be formed, the spectrum with reference to background optical information, light turbidity information with passing through signal driving and processing system reality
The inside self compensation of existing TOC sensors, complete TOC measurements.
The utility model has the following advantages that compared with prior art：
1st, detected based on spectrographic technique, without adding chemical reagent；
2nd, equipment is compact, integrated level is high, and on-line measurement in situ can be achieved；
3rd, three-dimensional fluorescence spectrum information effectively lifts accuracy of detection with being combined with reference to bias light, turbidity information.
Brief description of the drawings
Fig. 1 is structure schematic diagram of the present utility model.
In figure：1-LED arrays, 2- linearly adjustable filter array, 3- spectroscopes, 4- binary transflectors mirror, 5- collimaters one,
6- sample cells, 7- collimaters two, 8- collimaters three, 9- diffraction grating, 10- electron multiplication CCD, 11- photo-detector one, 12- light
Detector two, the driving of 13- signals and processing module, 14- detection light, 15- reference lights.
Embodiment
In the total organic carbon optics home position sensing schematic diagram shown in Fig. 1, the LED array 1 in light source module is
Light-emitting device, the linear adjustable filter array 2 of LED array output end connection, the light that linear adjustable filter array exports LED array
It is filtered into adjustable monochromatic ultraviolet light；Spectroscope 3 in reference light detection module is located to be emitted in above-mentioned adjustable Monochromatic UV sources
Light path on, spectroscopical minute surface and light source exit direction be in 45° angle, and reflectivity is 10~30%, and spectroscope is by adjustable monochrome
Ultraviolet light is divided into the orthogonal light of two beams, and a branch of as detection 14, a branch of to be used as reference light 15, photo-detector 1 is positioned at ginseng
Examine in light light path, and be in 90 ° of angles with light source exit direction, detectable signal compensates for reference background light；Sample cell and scattering light
Binary transflector mirror 4 in detection module is located at after above-mentioned spectroscope, and minute surface and light direction of illumination are in 45° angle, in binary
Be sequentially provided with collimater 1 and sample cell 6 in the reflected light light path of transflector mirror side, collimater one in binary transflector mirror and
Position between sample cell is to ensure that adjustable monochromatic ultraviolet light is converged in sample cell；Collimater 27 and photo-detector 2 12
In input path lateral location outside sample cell, photo-detector two aligns with the collimated light path of collimater two, and photo-detector two detects
Signal is used for determining amount；Collimater 38 and diffraction grating 9 in reflected fluorescent light detection module are located at above-mentioned binary transflector mirror
Opposite side, for collecting the fluorescence that is reflected back from sample cell, the reflected fluorescent light Jing Guo collimater three is launched into by diffraction grating
By the spectrum of wave arrangement, electron multiplication CCD10 is located at the spectral position formed after diffraction grating dispersion, by fluorescence spectrum
Optical signal is transformed into electric signal；Described reference light detection module, sample cell and scattering light detection module, reflected fluorescent light detection mould
The output electric signal of block is connected to signal driving and processing module 13 by signal wire, and signal driving and processing module are with FPGA
+ DSP is that data processing core realizes the functions such as light source driving, each detection module data processing, signal compensation.
Claims (1)
- A kind of 1. total organic carbon optics home position sensing, it is characterised in that：It includes light source module, reference light detection mould Block, sample cell and scattering light detection module, reflected fluorescent light detection module and signal driving and processing module；The light source module includes LED array and linear adjustable filter array, and LED array is light-emitting device, LED array output end The light that LED array exports is filtered into adjustable monochromatic ultraviolet light by the linear adjustable filter array of connection, linear adjustable filter array；Described reference light detection module includes spectroscope and photo-detector one, and spectroscope is located in above-mentioned adjustable monochromatic ultraviolet light In the light path of source outgoing, spectroscopical minute surface is in 45° angle with light source exit direction, and reflectivity is 10~30%；Spectroscope can Monochromatic ultraviolet light is adjusted to be divided into the orthogonal light of two beams, a branch of as detection light, a branch of to be used as reference light, photo-detector one is located at In reference light light path, and it is in 90 ° of angles with light source exit direction, detectable signal compensates for reference background light；Described sample cell and scattering light detection module includes binary transflector mirror, collimater one, sample cell, collimater two and light Detector two, wherein binary transflector mirror are located at after above-mentioned spectroscope, and minute surface and light direction of illumination are in 45° angle, in binary Collimater one and sample cell are sequentially provided with the reflected light light path of transflector mirror side, collimater one is in binary transflector mirror and sample Position between product pond is to ensure that adjustable monochromatic ultraviolet light is converged in sample cell；Collimater two and photo-detector two are located at sample Input path lateral location outside pond, photo-detector two are alignd with the collimated light path of collimater two, and the detectable signal of photo-detector two is used In determining amount；Described reflected fluorescent light detection module includes collimater three, diffraction grating and electron multiplication CCD, wherein collimater three and spreads out The opposite side that grating is located at above-mentioned binary transflector mirror is penetrated, for collecting the fluorescence that is reflected back from sample cell, diffraction grating will be through The reflected fluorescent light for crossing collimater three is launched into spectrum by wave arrangement, and electron multiplication CCD is formed after being located at diffraction grating dispersion Spectral position at, the optical signal of fluorescence spectrum is transformed into electric signal；Described reference light detection module, sample cell and scattering light detection module, the output electric signal of reflected fluorescent light detection module Signal driving and processing module are connected to by signal wire.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720337988.XU CN206920339U (en) | 2017-04-01 | 2017-04-01 | Total organic carbon optics home position sensing |
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| CN201720337988.XU CN206920339U (en) | 2017-04-01 | 2017-04-01 | Total organic carbon optics home position sensing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108732142A (en) * | 2018-02-09 | 2018-11-02 | 秦皇岛红燕光电科技有限公司 | Phytoplankton & Suspension red tide based on three-dimensional fluorescence spectrum and detection method of toxicity |
| CN111175260A (en) * | 2020-01-07 | 2020-05-19 | 燕山大学 | Ocean TOC sensor based on ultraviolet three-dimensional fluorescence and using method |
-
2017
- 2017-04-01 CN CN201720337988.XU patent/CN206920339U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108732142A (en) * | 2018-02-09 | 2018-11-02 | 秦皇岛红燕光电科技有限公司 | Phytoplankton & Suspension red tide based on three-dimensional fluorescence spectrum and detection method of toxicity |
| CN108732142B (en) * | 2018-02-09 | 2021-03-02 | 秦皇岛红燕光电科技有限公司 | Three-dimensional fluorescence spectrum-based seawater algae red tide and toxicity detection method |
| CN111175260A (en) * | 2020-01-07 | 2020-05-19 | 燕山大学 | Ocean TOC sensor based on ultraviolet three-dimensional fluorescence and using method |
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